/* PLANY - 80's Inspired Modern Design */

/* 80's Color Palette */
:root {
    /* Primary 80's Colors */
    --neon-pink: #FF6B9D;
    --neon-pink-dark: #E84A7F;
    --electric-purple: #9D4EDD;
    --electric-purple-dark: #7B2CBF;
    --cyan-blue: #00D4FF;
    --cyan-blue-dark: #00A8CC;
    --sunset-orange: #FF8C42;
    --sunset-yellow: #FFD93D;
    --miami-teal: #6FFFE9;
    --synthwave-blue: #5C4D7D;
    
    /* Neutrals */
    --dark-bg: #1A1A2E;
    --card-bg: #16213E;
    --card-bg-light: #1F3460;
    --surface: #0F0F23;
    --text-primary: #FFFFFF;
    --text-secondary: #B8C1EC;
    --text-muted: #7F8CAA;
    
    /* Gradients */
    --gradient-sunset: linear-gradient(135deg, #FF6B9D 0%, #FF8C42 50%, #FFD93D 100%);
    --gradient-synthwave: linear-gradient(135deg, #9D4EDD 0%, #FF6B9D 100%);
    --gradient-ocean: linear-gradient(135deg, #00D4FF 0%, #6FFFE9 100%);
    --gradient-card: linear-gradient(145deg, #1F3460 0%, #16213E 100%);
    
    /* Effects */
    --shadow-neon-pink: 0 0 20px rgba(255, 107, 157, 0.3);
    --shadow-neon-purple: 0 0 20px rgba(157, 78, 221, 0.3);
    --shadow-neon-cyan: 0 0 20px rgba(0, 212, 255, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
    
    /* Spacing & Radius */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--surface);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Improve touch targets */
button, 
a, 
input, 
select, 
textarea,
.calendar-day,
.week-lesson,
.class-card,
.nav-item {
    min-height: 44px; /* Apple's recommended touch target */
}

/* Better focus states for accessibility */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--neon-pink);
    outline-offset: 2px;
}

/* Smooth transitions for interactive elements */
button,
a,
.card,
.calendar-day {
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

/* Prevent text selection on buttons for cleaner UX */
button {
    user-select: none;
    -webkit-user-select: none;
}

/* Utilities */
.hidden { display: none !important; }

/* Decorative Grid Background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(157, 78, 221, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(157, 78, 221, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* Screens */
.screen {
    display: none;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.screen.active {
    display: flex;
    flex-direction: column;
}

/* ==================== AUTH SCREEN ==================== */
.auth-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    max-width: 420px;
    margin: 0 auto;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 20px rgba(255, 107, 157, 0.5));
}

.auth-header h1 {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-sunset);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    text-shadow: 0 0 40px rgba(255, 107, 157, 0.3);
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

/* Auth Card */
.auth-form {
    width: 100%;
    background: var(--gradient-card);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.auth-form h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--text-primary);
}

/* Divider */
.auth-divider {
    display: flex;
    align-items: center;
    margin: 1.5rem 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.auth-divider span {
    padding: 0 1rem;
}

.auth-switch {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--neon-pink);
    text-decoration: none;
    font-weight: 600;
    transition: text-shadow 0.3s;
}

.auth-switch a:hover {
    text-shadow: 0 0 10px var(--neon-pink);
}

.error-message {
    background: rgba(220, 38, 38, 0.2);
    color: #FF6B6B;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-top: 1rem;
    font-size: 0.875rem;
    text-align: center;
    border: 1px solid rgba(220, 38, 38, 0.3);
}

/* Debug Panel */
.debug-panel {
    background: rgba(0, 0, 0, 0.9);
    border: 2px solid #00D4FF;
    border-radius: var(--radius-md);
    padding: 0.75rem;
    margin-top: 1rem;
    font-size: 0.65rem;
    max-height: 200px;
    overflow-y: auto;
    font-family: monospace;
    text-align: left;
}

.debug-panel strong {
    color: #00D4FF;
    font-size: 0.75rem;
}

#debug-log {
    margin-top: 0.5rem;
    color: #6FFFE9;
}

#debug-log div {
    padding: 3px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    word-break: break-all;
}

#debug-log .error {
    color: #FF6B9D;
}

#debug-log .success {
    color: #6FFFE9;
}

.auth-version {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    opacity: 0.5;
}

/* ==================== FORMS ==================== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--dark-bg);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--neon-pink);
    box-shadow: var(--shadow-neon-pink);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-synthwave);
    color: white;
    box-shadow: var(--shadow-neon-purple);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(157, 78, 221, 0.5);
}

.btn-google {
    background: var(--card-bg-light);
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    margin-bottom: 1rem;
}

.btn-google:hover {
    border-color: var(--cyan-blue);
    box-shadow: var(--shadow-neon-cyan);
}

.btn-google svg {
    width: 20px;
    height: 20px;
}

.btn-secondary {
    background: var(--card-bg-light);
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    border-color: var(--text-secondary);
}

.btn-secondary.active {
    background: var(--gradient-synthwave);
    border-color: var(--neon-pink);
    color: white;
    box-shadow: var(--shadow-neon-pink);
}

.btn-danger {
    background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
    color: white;
}

/* PWA Install Button */
.btn-install {
    background: var(--gradient-sunset);
    color: white;
    font-weight: 600;
    border: none;
    animation: pulse-glow 2s ease-in-out infinite;
}

.btn-install:hover {
    transform: scale(1.05);
}

.btn-install.hidden {
    display: none;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(255, 140, 66, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 140, 66, 0.8), 0 0 30px rgba(255, 217, 61, 0.4);
    }
}

#install-btn-auth {
    margin-top: 1.5rem;
    width: 100%;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
}

.btn-icon {
    padding: 0.5rem;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* ==================== APP HEADER ==================== */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: linear-gradient(180deg, var(--dark-bg) 0%, transparent 100%);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-small {
    font-size: 1.75rem;
    filter: drop-shadow(0 0 10px rgba(255, 107, 157, 0.5));
}

.header-left h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-sunset);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ==================== MAIN CONTENT ==================== */
.app-main {
    flex: 1;
    padding: 1rem;
    padding-bottom: 6rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Calendar view should be full width */
#calendar-view .app-main,
.view.active {
    max-width: 100% !important;
}

/* ==================== VIEWS ==================== */
.view {
    display: none;
}

.view.active {
    display: flex;
    flex-direction: column;
    flex: 1;
    animation: fadeIn 0.3s ease;
    width: 100%;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.view-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.view-header h2 .icon {
    font-size: 1.75rem;
}

/* ==================== CARDS ==================== */
.card {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(0, 0, 0, 0.2);
}

/* ==================== CALENDAR ==================== */
.calendar-nav, .week-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.calendar-nav span, .week-nav span {
    font-weight: 600;
    min-width: 160px;
    text-align: center;
    color: var(--text-secondary);
}

/* Calendar Navigation Bar */
.calendar-nav-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* School Year Info Bar */
.school-year-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.school-year-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.school-year-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.school-year-value {
    color: var(--neon-pink);
    font-weight: 700;
    font-size: 1rem;
}

.school-year-dates {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.school-year-dates span:first-child,
.school-year-dates span:last-child {
    color: var(--cyan-blue);
    font-weight: 600;
}

.date-separator {
    color: var(--text-muted);
}

.school-year-progress {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 150px;
    max-width: 250px;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--dark-bg);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-sunset);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.school-days-left {
    font-size: 0.75rem;
    color: var(--cyan-blue);
    font-weight: 600;
    white-space: nowrap;
}

.school-year-progress {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Breaks Banner */
.breaks-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, rgba(255, 140, 66, 0.15) 0%, rgba(255, 217, 61, 0.15) 100%);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 140, 66, 0.3);
}

.breaks-banner.hidden {
    display: none;
}

.breaks-icon {
    font-size: 1.25rem;
}

#breaks-text {
    color: var(--text-primary);
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    .school-year-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .school-year-progress {
        width: 100%;
        max-width: none;
    }
}

.calendar-nav-bar span {
    font-weight: 700;
    font-size: 1.1rem;
    min-width: 150px;
    text-align: center;
    color: var(--text-primary);
}

.calendar-nav-bar .btn-icon {
    background: var(--dark-bg);
    color: var(--neon-pink);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1rem;
    border: 2px solid var(--neon-pink);
    transition: all 0.3s;
}

.calendar-nav-bar .btn-icon:hover {
    background: var(--neon-pink);
    color: white;
    box-shadow: var(--shadow-neon-pink);
}

#today-btn {
    margin-left: 0.5rem;
}

.calendar-container {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 100%;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: var(--gradient-synthwave);
}

.calendar-weekdays > div {
    padding: 0.875rem 0.5rem;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(6, 1fr);
    gap: 1px;
    background: rgba(255, 255, 255, 0.03);
    flex: 1;
}

.calendar-day {
    background: var(--card-bg);
    min-height: 80px;
    padding: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    display: flex;
    flex-direction: column;
}

.calendar-day:hover {
    background: var(--card-bg-light);
}

.calendar-day.other-month {
    background: var(--dark-bg);
    opacity: 0.5;
}

.calendar-day.today {
    background: rgba(157, 78, 221, 0.2);
    border: 2px solid var(--electric-purple);
}

.calendar-day.today .day-number {
    background: var(--gradient-synthwave);
    color: white;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.day-number {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--text-secondary);
}

.day-lessons-preview {
    display: flex;
    flex-direction: column;
    gap: 3px;
    flex: 1;
    overflow: hidden;
}

.lesson-dot {
    font-size: 0.625rem;
    padding: 3px 6px;
    border-radius: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: white;
    font-weight: 500;
}

/* Calendar Events */
.calendar-event {
    font-size: 0.6rem;
    padding: 2px 4px;
    border-radius: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
    cursor: pointer;
}

.calendar-event.event-holiday {
    background: rgba(255, 140, 66, 0.4);
    color: #FFD93D;
    border-left: 2px solid #FF8C42;
}

.calendar-event.event-first-day {
    background: rgba(34, 197, 94, 0.4);
    color: #86EFAC;
    border-left: 2px solid #22C55E;
}

.calendar-event.event-last-day {
    background: rgba(251, 191, 36, 0.4);
    color: #FDE047;
    border-left: 2px solid #FBBF24;
}

.calendar-event.event-meeting {
    background: rgba(0, 212, 255, 0.3);
    color: #00D4FF;
    border-left: 2px solid #00D4FF;
}

.calendar-event.event-assembly {
    background: rgba(157, 78, 221, 0.3);
    color: #C4A8FF;
    border-left: 2px solid #9D4EDD;
}

.calendar-event.event-field-trip {
    background: rgba(111, 255, 233, 0.3);
    color: #6FFFE9;
    border-left: 2px solid #6FFFE9;
}

.calendar-event.event-testing {
    background: rgba(255, 107, 157, 0.3);
    color: #FF6B9D;
    border-left: 2px solid #FF6B9D;
}

.calendar-event.event-deadline {
    background: rgba(220, 38, 38, 0.3);
    color: #FCA5A5;
    border-left: 2px solid #DC2626;
}

.calendar-event.event-event {
    background: rgba(156, 163, 175, 0.3);
    color: #D1D5DB;
    border-left: 2px solid #9CA3AF;
}

/* Class indicators on calendar */
.calendar-class {
    font-size: 0.6rem;
    padding: 2px 4px;
    border-radius: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
    cursor: pointer;
    opacity: 0.9;
    color: white;
}

.calendar-class:hover {
    opacity: 1;
}

.calendar-class.has-lesson {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

.calendar-class.no-lesson {
    opacity: 0.6;
}

/* Drag Selection for Multi-day Events */
.calendar-day.drag-start {
    background: rgba(255, 107, 157, 0.3) !important;
    box-shadow: inset 0 0 0 2px var(--neon-pink);
}

.calendar-day.drag-over {
    background: rgba(255, 107, 157, 0.2) !important;
}

.calendar-day.drag-end {
    background: rgba(255, 107, 157, 0.3) !important;
    box-shadow: inset 0 0 0 2px var(--neon-pink);
}

.calendar-day.in-drag-range {
    background: rgba(255, 107, 157, 0.15) !important;
}

/* Prevent text selection during drag */
.calendar-grid.dragging {
    user-select: none;
    -webkit-user-select: none;
}

.calendar-grid.dragging .calendar-day {
    cursor: crosshair;
}

/* Drag hint tooltip */
.drag-hint {
    position: fixed;
    background: var(--gradient-synthwave);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    pointer-events: none;
    z-index: 1000;
    white-space: nowrap;
    box-shadow: var(--shadow-neon-pink);
}

/* Day Modal Sections */
.day-modal-content {
    padding: 1rem 1.5rem;
    max-height: 60vh;
    overflow-y: auto;
}

.day-section {
    margin-bottom: 1.5rem;
}

.day-section h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.day-classes-list,
.day-events-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.day-class-item,
.day-event-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--dark-bg);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.day-class-item:hover,
.day-event-item:hover {
    background: var(--card-bg-light);
    transform: translateX(4px);
}

.day-class-info,
.day-event-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.day-class-color {
    width: 4px;
    height: 32px;
    border-radius: 2px;
}

.day-class-details h4,
.day-event-details h4 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.day-class-details p,
.day-event-details p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.day-class-status {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.day-class-status.has-lesson {
    background: rgba(111, 255, 233, 0.2);
    color: #6FFFE9;
}

.day-class-status.no-lesson {
    background: rgba(255, 107, 157, 0.2);
    color: #FF6B9D;
}

.day-event-type {
    font-size: 1.25rem;
}

.empty-state {
    text-align: center;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================== WEEK VIEW ==================== */
.week-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.week-day {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.week-day-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--synthwave-blue);
}

.week-day-header.today {
    background: var(--gradient-synthwave);
}

.week-day-name {
    font-weight: 700;
    font-size: 1rem;
}

.week-day-date {
    font-size: 0.875rem;
    opacity: 0.8;
}

.week-day-events {
    padding: 0.5rem 0.75rem 0;
}

.week-event {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    cursor: pointer;
    font-size: 0.8125rem;
    transition: all 0.2s;
}

.week-event:hover {
    transform: translateX(4px);
}

.week-event .event-icon {
    font-size: 0.875rem;
}

.week-event .event-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.week-event.event-event {
    background: rgba(156, 163, 175, 0.2);
    border-left: 3px solid #9CA3AF;
}

.week-event.event-first-day {
    background: rgba(34, 197, 94, 0.2);
    border-left: 3px solid #22C55E;
}

.week-event.event-last-day {
    background: rgba(251, 191, 36, 0.2);
    border-left: 3px solid #FBBF24;
}

.week-event.event-holiday {
    background: rgba(255, 140, 66, 0.2);
    border-left: 3px solid #FF8C42;
}

.week-event.event-meeting {
    background: rgba(0, 212, 255, 0.2);
    border-left: 3px solid #00D4FF;
}

.week-event.event-assembly {
    background: rgba(157, 78, 221, 0.2);
    border-left: 3px solid #9D4EDD;
}

.week-event.event-field-trip {
    background: rgba(111, 255, 233, 0.2);
    border-left: 3px solid #6FFFE9;
}

.week-event.event-testing {
    background: rgba(255, 107, 157, 0.2);
    border-left: 3px solid #FF6B9D;
}

.week-event.event-deadline {
    background: rgba(220, 38, 38, 0.2);
    border-left: 3px solid #DC2626;
}

.week-day-lessons {
    padding: 0.75rem;
}

.week-lesson {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    background: rgba(0, 0, 0, 0.2);
    margin-bottom: 0.5rem;
}

.week-lesson:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

.week-lesson.no-lesson {
    opacity: 0.7;
}

.week-lesson.no-lesson:hover {
    opacity: 1;
}

.lesson-color-bar {
    width: 4px;
    height: 100%;
    min-height: 40px;
    border-radius: 2px;
    flex-shrink: 0;
}

.lesson-time-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.625rem;
    border-radius: 8px;
    background: var(--dark-bg);
    color: var(--cyan-blue);
    white-space: nowrap;
    border: 1px solid var(--cyan-blue);
}

.lesson-info {
    flex: 1;
}

.lesson-info h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.125rem;
    color: var(--text-primary);
}

.lesson-info p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.125rem;
}

.lesson-info .lesson-time {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.lesson-status {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.week-lesson.has-lesson .lesson-status {
    color: var(--success-green, #4ade80);
}

.week-day-empty {
    padding: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Teaching Motif Icons */
.week-day-empty::before {
    content: '📖';
    display: block;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    opacity: 0.5;
}

/* ==================== CLASSES ==================== */
.classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.class-card {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.class-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.class-card-header {
    padding: 1.25rem;
    position: relative;
    overflow: hidden;
}

.class-card-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.class-card-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.class-card-header .room-badge {
    font-size: 0.75rem;
    opacity: 0.9;
    margin-top: 0.25rem;
}

.class-card-body {
    padding: 1rem 1.25rem;
}

.class-subject {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.class-subject::before {
    content: '📚';
}

.class-schedule {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.schedule-badge {
    font-size: 0.75rem;
    padding: 0.375rem 0.625rem;
    background: var(--dark-bg);
    border-radius: 8px;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.no-classes {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.no-classes::before {
    content: '🎓';
    display: block;
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.no-classes p {
    margin-bottom: 0.5rem;
}

/* ==================== SETTINGS ==================== */
.settings-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.settings-card {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.settings-card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.settings-card-header .icon {
    font-size: 1.5rem;
}

.settings-card-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.settings-card-body {
    padding: 1.25rem;
}

.school-year-hint {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 0.75rem;
}

.copy-data-section {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copy-data-section h4 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.copy-controls {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.copy-controls select {
    padding: 0.625rem;
    background: var(--dark-bg);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-primary);
}

.copy-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.copy-options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.copy-options input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--neon-pink);
}

.import-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.import-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.import-filename {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.import-preview {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.import-preview h4 {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.import-events-list {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.import-event-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
}

.import-event-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--neon-pink);
}

.import-event-date {
    color: var(--cyan-blue);
    font-weight: 500;
    min-width: 100px;
}

.import-event-title {
    flex: 1;
}

.import-event-type {
    font-size: 1rem;
}

.import-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

.import-summary {
    background: var(--dark-bg);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.import-summary strong {
    color: var(--cyan-blue);
}

/* JSON Format Help Section */
.json-format-help {
    margin-bottom: 1rem;
}

.json-format-help summary {
    cursor: pointer;
    color: var(--cyan-blue);
    font-weight: 500;
    padding: 0.5rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.json-format-help summary:hover {
    background: rgba(0, 212, 255, 0.2);
}

.json-help-content {
    padding: 1rem;
    background: var(--dark-bg);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    margin-top: 0.5rem;
}

.json-help-content p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.json-help-content pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-size: 0.75rem;
    color: var(--cyan-blue);
    margin: 0.75rem 0;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.json-help-content code {
    background: rgba(0, 212, 255, 0.2);
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    color: var(--cyan-blue);
    font-size: 0.8rem;
}

.json-help-content em {
    color: var(--neon-pink);
    font-style: normal;
}

.delete-imported-section {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-danger {
    background: rgba(220, 38, 38, 0.2);
    color: #DC2626;
    border: 2px solid #DC2626;
}

.btn-danger:hover {
    background: rgba(220, 38, 38, 0.4);
}

.breaks-list {
    margin-bottom: 1rem;
}

.break-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.break-info {
    font-size: 0.9rem;
}

.break-dates {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.add-break-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.add-break-form .date-row {
    display: flex;
    gap: 0.5rem;
}

.add-break-form input {
    padding: 0.625rem;
    background: var(--dark-bg);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-primary);
}

.add-break-form input:focus {
    outline: none;
    border-color: var(--neon-pink);
}

/* ==================== BOTTOM NAVIGATION ==================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    background: linear-gradient(180deg, rgba(22, 33, 62, 0.95) 0%, var(--card-bg) 100%);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 0.5rem 0;
    padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.5rem 0.5rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
    border-radius: var(--radius-sm);
    flex: 1;
    min-width: 0;
}

@media (min-width: 480px) {
    .nav-item {
        padding: 0.625rem 1rem;
        gap: 0.25rem;
    }
}

.nav-item:hover {
    color: var(--text-secondary);
}

.nav-item.active {
    color: var(--neon-pink);
}

.nav-item.active .nav-icon {
    filter: drop-shadow(0 0 8px var(--neon-pink));
}

.nav-icon {
    font-size: 1.25rem;
    transition: filter 0.3s;
}

@media (min-width: 480px) {
    .nav-icon {
        font-size: 1.5rem;
    }
}

.nav-label {
    font-size: 0.55rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

@media (min-width: 480px) {
    .nav-label {
        font-size: 0.6875rem;
        letter-spacing: 0.03em;
    }
}

/* ==================== FAB ==================== */
.fab {
    position: fixed;
    bottom: 5.5rem;
    right: 1.25rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-sunset);
    color: white;
    border: none;
    font-size: 1.75rem;
    font-weight: 300;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(255, 107, 157, 0.4);
    transition: all 0.3s;
    z-index: 99;
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 6px 30px rgba(255, 107, 157, 0.6);
}

/* ==================== MODALS ==================== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: 200;
    padding: 1rem;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: none;
}

.modal-large {
    max-width: 600px;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    background: var(--gradient-synthwave);
    position: sticky;
    top: 0;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    font-size: 1.25rem;
    color: white;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-content form {
    padding: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.modal-actions #print-lesson-btn {
    margin-right: auto;
    background: var(--card-bg);
    border: 1px solid var(--electric-purple);
}

.modal-actions #print-lesson-btn:hover {
    background: var(--electric-purple);
}

/* Print buttons in nav */
#print-week-btn,
#print-month-btn {
    background: transparent;
    border: 1px solid var(--text-muted);
    font-size: 1rem;
}

#print-week-btn:hover,
#print-month-btn:hover {
    background: var(--electric-purple);
    border-color: var(--electric-purple);
}

/* Day Lessons in Modal */
.day-lessons {
    padding: 1rem 1.5rem;
}

.day-lesson-card {
    background: var(--dark-bg);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid transparent;
}

.day-lesson-card:hover {
    border-color: var(--electric-purple);
    box-shadow: var(--shadow-neon-purple);
}

.day-lesson-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.day-lesson-title {
    font-weight: 600;
    font-size: 1rem;
}

.day-lesson-time {
    font-size: 0.75rem;
    color: var(--cyan-blue);
    font-weight: 500;
}

.day-lesson-subject {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.no-lessons {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.no-lessons::before {
    content: '✏️';
    display: block;
    font-size: 2rem;
    margin-bottom: 0.5rem;
    opacity: 0.5;
}

/* ==================== COLOR PICKER ==================== */
.color-picker {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.color-option {
    cursor: pointer;
}

.color-option input {
    display: none;
}

.color-option span {
    display: block;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 3px solid transparent;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.color-option:hover span {
    transform: scale(1.1);
}

.color-option input:checked + span {
    border-color: white;
    box-shadow: 0 0 15px currentColor;
}

/* ==================== SCHEDULE PICKER ==================== */
.schedule-picker {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.schedule-day {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
}

.schedule-day label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 60px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
}

.schedule-day input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--neon-pink);
}

.schedule-day input[type="time"] {
    width: 90px;
    padding: 0.4rem;
    background: var(--card-bg);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-primary);
}

.schedule-day input[type="time"]:focus {
    outline: none;
    border-color: var(--cyan-blue);
}

.time-separator {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.copy-time-btn {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.5rem;
    font-size: 0.75rem;
    cursor: pointer;
    opacity: 0.6;
    transition: all 0.2s ease;
}

.copy-time-btn:hover {
    opacity: 1;
    background: rgba(255,255,255,0.1);
    border-color: var(--cyan-blue);
}

.schedule-options {
    padding: 0.5rem;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-sm);
}

.toggle-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    cursor: pointer;
}

.toggle-option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--neon-pink);
}

#week-type-selector select {
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
}

/* ==================== TOAST ==================== */
.toast {
    position: fixed;
    bottom: 7rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-synthwave);
    color: white;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 300;
    box-shadow: 0 4px 20px rgba(157, 78, 221, 0.4);
    animation: toastIn 0.3s ease;
}

@keyframes toastIn {
    from { 
        opacity: 0; 
        transform: translateX(-50%) translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateX(-50%) translateY(0); 
    }
}

/* ==================== LOADING ==================== */
.loading {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 35, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 400;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--card-bg-light);
    border-top-color: var(--neon-pink);
    border-right-color: var(--electric-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==================== STATS CARDS ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--gradient-card);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-card .stat-icon {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-sunset);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card .stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.25rem;
}

/* ==================== BACKGROUND THEMES ==================== */
body.bg-classroom::before {
    background-image: 
        linear-gradient(rgba(157, 78, 221, 0.4) 1px, transparent 1px),
        linear-gradient(90deg, rgba(157, 78, 221, 0.4) 1px, transparent 1px) !important;
    background-size: 50px 50px !important;
    background-color: var(--surface) !important;
}

body.bg-beach::before {
    background: linear-gradient(180deg, 
        #00D4FF 0%, 
        #87CEEB 25%,
        #B0E0E6 40%,
        #FFD93D 70%,
        #FF8C42 100%) !important;
    opacity: 1;
}

body.bg-mountains::before {
    background: linear-gradient(180deg, 
        #5C4D7D 0%, 
        #7B68A6 25%,
        #9D8EC4 50%,
        #C4B8DB 75%,
        #E8E0F0 100%) !important;
    opacity: 1;
}

body.bg-forest::before {
    background: linear-gradient(180deg, 
        #1B4332 0%, 
        #2D6A4F 30%,
        #40916C 60%,
        #52B788 85%,
        #74C69D 100%) !important;
    opacity: 1;
}

/* Remove ::after pseudo-elements for cleaner look */
body.bg-beach::after,
body.bg-mountains::after,
body.bg-forest::after {
    display: none;
}

/* Custom background */
body.bg-custom::before {
    background-size: cover !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
    opacity: 0.6;
}

.bg-preview.bg-custom {
    background: linear-gradient(135deg, #333 0%, #666 100%);
    border: 2px dashed rgba(255,255,255,0.3);
}

.custom-upload-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.custom-upload-section.hidden {
    display: none;
}

.upload-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* ==================== BACKGROUND PICKER ==================== */
.background-picker {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.background-option {
    cursor: pointer;
    text-align: center;
}

.background-option input {
    display: none;
}

.bg-preview {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid transparent;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.bg-preview.bg-classroom {
    background: var(--dark-bg);
    background-image: 
        linear-gradient(rgba(157, 78, 221, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(157, 78, 221, 0.1) 1px, transparent 1px);
    background-size: 10px 10px;
}

.bg-preview.bg-beach {
    background: linear-gradient(180deg, 
        #00D4FF 0%, 
        #87CEEB 40%,
        #FFD93D 70%,
        #FF8C42 100%);
}

.bg-preview.bg-mountains {
    background: linear-gradient(180deg, 
        #5C4D7D 0%, 
        #7B68A6 30%,
        #9D8EC4 60%,
        #C4B8DB 100%);
}

.bg-preview.bg-forest {
    background: linear-gradient(180deg, 
        #1B4332 0%, 
        #2D6A4F 40%,
        #40916C 70%,
        #52B788 100%);
}

.bg-icon {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.bg-label {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.background-option:hover .bg-preview {
    transform: scale(1.05);
}

.background-option input:checked + .bg-preview {
    border-color: var(--neon-pink);
    box-shadow: var(--shadow-neon-pink);
}

.background-option input:checked ~ .bg-label {
    color: var(--neon-pink);
}

@media (max-width: 400px) {
    .background-picker {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================== VERSION BADGE ==================== */
.nav-version {
    position: absolute;
    right: 0.75rem;
    bottom: 0.4rem;
    font-size: 0.6rem;
    color: var(--text-muted);
    opacity: 0.5;
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* Calendar View - Full Height */
#calendar-view {
    display: flex;
    flex-direction: column;
    height: 100%;
}

#calendar-view .calendar-container {
    flex: 1;
    min-height: 400px;
}

/* ==================== RESPONSIVE ==================== */

/* Mobile First - Default styles are for mobile */

/* Small tablets and large phones */
@media (min-width: 480px) {
    .calendar-nav-bar {
        gap: 1rem;
    }
    
    .calendar-nav-bar span {
        min-width: 180px;
        font-size: 1.2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .background-picker {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* Tablets */
@media (min-width: 768px) {
    .modal-content {
        border-radius: var(--radius-xl);
        margin: auto;
        border: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .calendar-day {
        min-height: 100px;
        padding: 0.75rem;
    }
    
    .calendar-day .day-number {
        font-size: 1rem;
    }
    
    .app-main {
        padding: 1.5rem;
        padding-bottom: 6rem;
    }
    
    .week-container {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: 1rem;
    }
    
    .week-day {
        min-height: 350px;
    }
    
    .add-break-form {
        max-width: 600px;
    }
    
    .auth-container {
        max-width: 440px;
    }
    
    .view-header h2 {
        font-size: 1.75rem;
    }
    
    .calendar-nav-bar {
        padding: 1.25rem 2rem;
    }
    
    .calendar-nav-bar span {
        min-width: 200px;
        font-size: 1.3rem;
    }
    
    .calendar-nav-bar .btn-icon {
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }
    
    /* Larger calendar cells for desktop */
    .lesson-dot {
        font-size: 0.7rem;
        padding: 4px 8px;
    }
    
    .classes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .settings-container {
        max-width: 700px;
        margin: 0 auto;
    }
    
    #week-view,
    #classes-view,
    #settings-view {
        max-width: 1000px;
        margin: 0 auto;
        width: 100%;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .app-main {
        padding: 2rem;
        padding-bottom: 6rem;
    }
    
    .calendar-day {
        min-height: 120px;
    }
    
    .calendar-weekdays > div {
        font-size: 0.85rem;
        padding: 1rem;
    }
    
    .classes-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .settings-container {
        max-width: 800px;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    /* Large cards span full width */
    .settings-card.full-width {
        grid-column: span 2;
    }
    
    #week-view,
    #classes-view,
    #settings-view {
        max-width: 1200px;
    }
    
    /* Calendar stays full width */
    #calendar-view {
        max-width: 100%;
    }
}

/* Large Desktop */
@media (min-width: 1400px) {
    .calendar-day {
        min-height: 140px;
    }
    
    .calendar-day .day-number {
        font-size: 1.1rem;
    }
    
    .lesson-dot {
        font-size: 0.75rem;
    }
    
    .app-main {
        padding: 2rem 3rem;
    }
}

/* Extra Large Desktop */
@media (min-width: 1800px) {
    .calendar-day {
        min-height: 160px;
    }
    
    .app-main {
        padding: 2rem 4rem;
    }
}

/* Fix for very small screens */
@media (max-width: 360px) {
    .calendar-nav-bar {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .calendar-nav-bar span {
        min-width: 100px;
        font-size: 0.9rem;
    }
    
    #today-btn {
        margin-left: 0;
        margin-top: 0.5rem;
        width: 100%;
    }
    
    /* Extra small screen calendar weekday headers */
    .calendar-weekdays > div {
        font-size: 0.55rem;
        padding: 0.3rem 0;
    }
    
    /* Extra small calendar grid */
    .calendar-grid {
        grid-template-rows: repeat(6, minmax(45px, 1fr)) !important;
    }
    
    /* Extra small calendar cells */
    .calendar-day {
        min-height: 45px !important;
        padding: 0.15rem !important;
    }
    
    .day-number {
        font-size: 0.6rem !important;
    }
    
    .calendar-day.today .day-number {
        width: 16px !important;
        height: 16px !important;
        font-size: 0.55rem !important;
    }
    
    .lesson-dot, .calendar-class, .calendar-event {
        font-size: 0.4rem !important;
        padding: 1px 2px !important;
    }
    
    .background-picker {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .auth-container {
        max-width: 440px;
    }
}

/* Mobile-specific improvements */
@media (max-width: 480px) {
    /* Smaller header */
    .app-header {
        padding: 0.5rem 0.75rem;
    }
    
    .app-header h1 {
        font-size: 1.25rem;
    }
    
    .user-name {
        font-size: 0.8rem;
        max-width: 100px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    /* Tighter main padding */
    .app-main {
        padding: 0.5rem;
        padding-bottom: 5rem;
    }
    
    /* View header */
    .view-header {
        margin-bottom: 0.5rem;
    }
    
    .view-header h2 {
        font-size: 1.1rem;
    }
}

/* Mobile and small tablet calendar fixes */
@media (max-width: 768px) {
    /* School year bar compact */
    .school-year-bar {
        padding: 0.5rem 0.75rem !important;
        gap: 0.5rem !important;
        flex-direction: column !important;
        align-items: center !important;
        display: flex !important;
    }
    
    .school-year-info {
        justify-content: center !important;
        display: flex !important;
    }
    
    .school-year-label {
        font-size: 0.75rem !important;
    }
    
    .school-year-value {
        font-size: 0.9rem !important;
    }
    
    .school-year-dates {
        justify-content: center !important;
        font-size: 0.8rem !important;
        display: flex !important;
    }
    
    .school-year-progress {
        width: 100% !important;
        justify-content: center !important;
        flex-wrap: wrap !important;
        gap: 0.5rem !important;
        display: flex !important;
    }
    
    .progress-bar {
        width: 100% !important;
        height: 6px !important;
    }
    
    .progress-text, .school-days-left {
        font-size: 0.7rem !important;
    }
    
    /* Calendar nav - CRITICAL: ensure all buttons visible */
    .calendar-nav-bar {
        padding: 0.75rem !important;
        gap: 0.5rem !important;
        flex-wrap: wrap !important;
        justify-content: center !important;
        display: flex !important;
    }
    
    .calendar-nav-bar > * {
        display: inline-flex !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    .calendar-nav-bar span#current-month {
        font-size: 1rem !important;
        min-width: auto !important;
        flex: 0 0 auto !important;
        order: 2 !important;
        display: inline-block !important;
    }
    
    .calendar-nav-bar .btn-icon {
        width: 40px !important;
        height: 40px !important;
        font-size: 1rem !important;
        flex-shrink: 0 !important;
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    
    .calendar-nav-bar #prev-month { order: 1 !important; }
    .calendar-nav-bar #next-month { order: 3 !important; }
    .calendar-nav-bar #today-btn { order: 4 !important; }
    .calendar-nav-bar #print-month-btn { order: 5 !important; }
    
    #today-btn {
        padding: 0.5rem 0.75rem !important;
        font-size: 0.8rem !important;
        margin-left: 0 !important;
        display: inline-flex !important;
    }
    
    #print-month-btn {
        display: inline-flex !important;
    }
    
    /* Calendar weekday headers - hide weekends on mobile, show only Mon-Fri */
    .calendar-weekdays {
        grid-template-columns: repeat(5, 1fr) !important;
    }
    
    .calendar-weekdays .weekday-sun,
    .calendar-weekdays .weekday-sat {
        display: none !important;
    }
    
    .calendar-weekdays > div {
        padding: 0.4rem 0.1rem;
        font-size: 0.6rem;
        letter-spacing: 0;
    }
    
    /* Calendar grid - 5 columns for weekdays only (JS skips weekends on mobile) */
    .calendar-grid {
        grid-template-columns: repeat(5, 1fr) !important;
        grid-template-rows: repeat(6, minmax(50px, 1fr)) !important;
    }
    
    /* Calendar day cells */
    .calendar-day {
        min-height: 50px !important;
        padding: 0.2rem !important;
        overflow: hidden;
    }
    
    .day-number {
        font-size: 0.6rem !important;
        margin-bottom: 0 !important;
        line-height: 1.1 !important;
    }
    
    .calendar-day.today .day-number {
        width: 16px !important;
        height: 16px !important;
        font-size: 0.55rem !important;
    }
    
    .lesson-dot, .calendar-class {
        font-size: 0.35rem !important;
        padding: 1px 2px !important;
        border-radius: 2px !important;
        line-height: 1 !important;
    }
    
    .calendar-event {
        font-size: 0.4rem !important;
        padding: 1px 2px !important;
        line-height: 1 !important;
    }
    
    /* Ensure day labels container doesn't overflow */
    .day-lessons-preview {
        gap: 1px !important;
        max-height: calc(100% - 18px) !important;
    }
    
    /* Week view */
    .week-nav-bar {
        padding: 0.5rem;
    }
    
    .week-container {
        gap: 0.5rem;
    }
    
    .week-day {
        min-height: auto;
    }
    
    .week-day-header {
        padding: 0.4rem;
    }
    
    .week-day-name {
        font-size: 0.75rem;
    }
    
    .week-day-date {
        font-size: 0.65rem;
    }
    
    .week-lesson {
        padding: 0.4rem;
        gap: 0.4rem;
    }
    
    .lesson-color-bar {
        width: 3px;
        min-height: 30px;
    }
    
    .lesson-info h4 {
        font-size: 0.75rem;
    }
    
    .lesson-info p,
    .lesson-info .lesson-time {
        font-size: 0.6rem;
    }
    
    /* Classes view */
    .classes-grid {
        gap: 0.5rem;
    }
    
    .class-card-header {
        padding: 0.75rem;
    }
    
    .class-card-header h3 {
        font-size: 0.9rem;
    }
    
    .class-card-body {
        padding: 0.5rem 0.75rem;
    }
    
    .schedule-badge {
        font-size: 0.55rem;
        padding: 0.15rem 0.35rem;
    }
    
    /* Settings - ensure buttons are clickable */
    .settings-card {
        margin-bottom: 0.5rem;
    }
    
    .settings-card-header {
        padding: 0.75rem;
    }
    
    .settings-card-header h3 {
        font-size: 0.9rem;
    }
    
    .settings-card-body {
        padding: 0.75rem;
    }
    
    .settings-card-body .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
        min-height: 44px;
    }
    
    .form-control {
        min-height: 44px;
        font-size: 16px;
    }
    
    /* Modal */
    .modal-content {
        margin: 0.25rem;
        max-height: calc(100vh - 0.5rem);
        border-radius: 12px;
    }
    
    .modal-header {
        padding: 0.6rem 0.75rem;
    }
    
    .modal-header h2 {
        font-size: 1rem;
    }
    
    .modal form {
        padding: 0.5rem 0.75rem;
    }
    
    .form-group {
        margin-bottom: 0.5rem;
    }
    
    .form-group label {
        font-size: 0.75rem;
        margin-bottom: 0.2rem;
    }
    
    .modal-actions {
        padding: 0.5rem 0.75rem;
        gap: 0.5rem;
    }
    
    .modal-actions .btn {
        min-height: 44px;
    }
    
    /* Bottom nav */
    .bottom-nav {
        padding: 0.25rem 0;
    }
    
    .nav-item {
        padding: 0.25rem 0.15rem;
        gap: 0.1rem;
    }
    
    .nav-icon {
        font-size: 1rem;
    }
    
    .nav-label {
        font-size: 0.45rem;
    }
    
    .nav-version {
        font-size: 0.4rem;
    }
    
    /* FAB */
    .fab {
        width: 48px;
        height: 48px;
        font-size: 1.4rem;
        bottom: 4.5rem;
        right: 0.75rem;
    }
    
    /* Day modal */
    .day-class-item {
        padding: 0.5rem;
        min-height: 44px;
    }
    
    .day-class-name {
        font-size: 0.8rem;
    }
    
    .day-class-time {
        font-size: 0.65rem;
    }
    
    /* Year view */
    .year-summary {
        padding: 0.5rem;
        font-size: 0.75rem;
        flex-wrap: wrap;
    }
    
    .summary-item {
        font-size: 0.7rem;
    }
}

/* Landscape tip removed - was causing layout issues on mobile */

/* Landscape mobile - better calendar */
@media (max-width: 850px) and (orientation: landscape) {
    .app-header {
        padding: 0.3rem 0.75rem;
    }
    
    .app-main {
        padding: 0.25rem 0.5rem;
        padding-bottom: 4rem;
    }
    
    .school-year-bar {
        padding: 0.3rem 0.5rem;
        font-size: 0.65rem;
    }
    
    .calendar-nav-bar {
        padding: 0.3rem 0.5rem;
    }
    
    .calendar-weekdays > div {
        padding: 0.3rem 0.1rem;
        font-size: 0.6rem;
    }
    
    .calendar-day {
        min-height: 45px;
        padding: 0.15rem;
    }
    
    .bottom-nav {
        padding: 0.2rem 0;
    }
    
    .nav-icon {
        font-size: 0.9rem;
    }
    
    .nav-label {
        font-size: 0.4rem;
    }
    
    .fab {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        bottom: 4rem;
    }
}

/* Year View */
.year-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    padding: 0.75rem;
    max-width: 1200px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .year-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
        padding: 1rem;
    }
}

@media (min-width: 1024px) {
    .year-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.mini-month {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    border: 1px solid var(--border-color);
}

.mini-month-header {
    text-align: center;
    font-weight: 700;
    font-size: 0.75rem;
    color: var(--hot-pink);
    margin-bottom: 0.25rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--border-color);
}

@media (min-width: 768px) {
    .mini-month {
        padding: 0.75rem;
    }
    
    .mini-month-header {
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
        padding-bottom: 0.5rem;
    }
}

.mini-month-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    font-size: 0.55rem;
}

@media (min-width: 768px) {
    .mini-month-grid {
        gap: 2px;
        font-size: 0.65rem;
    }
}

.mini-day-header {
    text-align: center;
    color: var(--text-muted);
    font-weight: 600;
    padding: 1px;
    font-size: 0.5rem;
}

@media (min-width: 768px) {
    .mini-day-header {
        padding: 2px;
        font-size: 0.6rem;
    }
}

.mini-day {
    text-align: center;
    padding: 2px 1px;
    border-radius: 2px;
    color: var(--text-secondary);
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
    min-height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    .mini-day {
        padding: 3px 2px;
        border-radius: 3px;
        min-height: 20px;
    }
}

.mini-day:hover {
    background: rgba(255, 255, 255, 0.1);
}

.mini-day.empty {
    color: transparent;
    cursor: default;
}

.mini-day.weekend {
    color: var(--text-muted);
    opacity: 0.5;
}

.mini-day.today {
    background: var(--gradient-sunset);
    color: white;
    font-weight: 700;
    border-radius: 50%;
}

.mini-day.first-last {
    background: rgba(0, 255, 136, 0.3);
    color: #00FF88;
    font-weight: 700;
}

.mini-day.break {
    background: rgba(255, 107, 157, 0.3);
    color: var(--hot-pink);
}

.mini-day.grading {
    background: rgba(255, 217, 61, 0.3);
    color: var(--electric-yellow);
}

.mini-day.conference {
    background: rgba(0, 209, 255, 0.3);
    color: var(--cyan-blue);
}

.mini-day.has-lesson {
    position: relative;
}

.mini-day.has-lesson::after {
    content: '';
    position: absolute;
    bottom: 0px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 3px;
    background: var(--cyan-blue);
    border-radius: 50%;
}

@media (min-width: 768px) {
    .mini-day.has-lesson::after {
        width: 4px;
        height: 4px;
        bottom: 1px;
    }
}

/* Year Legend */
.year-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--card-bg);
    margin: 0 0.75rem 0.5rem;
    border-radius: var(--radius-md);
}

@media (min-width: 768px) {
    .year-legend {
        gap: 1rem;
        padding: 0.75rem;
        margin: 0 1rem 0.75rem;
    }
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.6rem;
    color: var(--text-secondary);
}

@media (min-width: 768px) {
    .legend-item {
        gap: 0.5rem;
        font-size: 0.75rem;
    }
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 2px;
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .legend-dot {
        width: 12px;
        height: 12px;
        border-radius: 3px;
    }
}

.legend-first-last {
    background: rgba(0, 255, 136, 0.5);
}

.legend-break {
    background: rgba(255, 107, 157, 0.5);
}

.legend-grading {
    background: rgba(255, 217, 61, 0.5);
}

.legend-conference {
    background: rgba(0, 209, 255, 0.5);
}

.legend-has-lesson {
    background: var(--cyan-blue);
    border-radius: 50%;
}

/* Year Summary */
.year-summary {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1rem;
    padding: 0.5rem;
    margin: 0.5rem 0.75rem;
    background: var(--card-bg);
    border-radius: var(--radius-md);
}

@media (min-width: 768px) {
    .year-summary {
        gap: 1rem 1.5rem;
        padding: 0.75rem;
        margin: 0.75rem 1rem;
    }
}

.summary-item {
    display: flex;
    gap: 0.25rem;
    font-size: 0.7rem;
}

@media (min-width: 768px) {
    .summary-item {
        gap: 0.5rem;
        font-size: 0.85rem;
    }
}

.summary-label {
    color: var(--text-muted);
}

.summary-value {
    color: var(--cyan-blue);
    font-weight: 700;
}

/* PWA Specific */
@media (display-mode: standalone) {
    .app-header {
        padding-top: max(1rem, env(safe-area-inset-top));
    }
}

/* Print Styles */
@media print {
    .bottom-nav, .fab, .app-header {
        display: none;
    }
    
    .app-main {
        padding: 0;
    }
    
    body::before {
        display: none;
    }
}

/* ==================== AI CURRICULUM STYLES ==================== */

/* AI Fill Section in Lesson Modal */
.ai-curriculum-section {
    background: linear-gradient(135deg, rgba(157, 78, 221, 0.15) 0%, rgba(255, 107, 157, 0.15) 100%);
    border: 1px solid rgba(157, 78, 221, 0.3);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    margin-bottom: 1rem;
}

.ai-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.ai-section-header span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ai-fill-panel {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(157, 78, 221, 0.2);
}

.ai-fill-panel.hidden {
    display: none;
}

.btn-ai {
    width: 100%;
    background: var(--gradient-synthwave);
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-neon-purple);
}

.btn-ai:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(157, 78, 221, 0.5);
}

.btn-ai:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.ai-status {
    margin-top: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    text-align: center;
}

.ai-status.loading {
    background: rgba(0, 212, 255, 0.1);
    color: var(--cyan-blue);
    animation: pulse 1.5s infinite;
}

.ai-status.success {
    background: rgba(0, 255, 136, 0.1);
    color: #00FF88;
}

.ai-status.error {
    background: rgba(255, 107, 157, 0.1);
    color: var(--neon-pink);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Curriculum Library in Settings */
.curriculum-upload-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.curriculum-library-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
}

.curriculum-doc-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--card-bg-light);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.curriculum-doc-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
}

.curriculum-doc-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.curriculum-doc-details {
    flex: 1;
    min-width: 0;
}

.curriculum-doc-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.curriculum-doc-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.curriculum-doc-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-icon-sm {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-icon-sm:hover {
    color: var(--neon-pink);
    background: rgba(255, 107, 157, 0.1);
}

/* Subject badges */
.subject-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

.subject-badge.math {
    background: rgba(0, 212, 255, 0.2);
    color: var(--cyan-blue);
}

.subject-badge.ela {
    background: rgba(255, 107, 157, 0.2);
    color: var(--neon-pink);
}

.subject-badge.phonics {
    background: rgba(157, 78, 221, 0.2);
    color: var(--electric-purple);
}

.subject-badge.science {
    background: rgba(0, 255, 136, 0.2);
    color: #00FF88;
}

.subject-badge.social {
    background: rgba(255, 140, 66, 0.2);
    color: var(--sunset-orange);
}

/* Empty state */
.curriculum-empty {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.curriculum-empty-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    opacity: 0.5;
}

/* ==================== LESSON ATTACHMENTS ==================== */

.lesson-attachments {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.attachments-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 200px;
    overflow-y: auto;
}

.attachment-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    background: var(--card-bg-light);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.attachment-item.curriculum-source {
    border-color: rgba(157, 78, 221, 0.4);
    background: linear-gradient(135deg, rgba(157, 78, 221, 0.1) 0%, rgba(255, 107, 157, 0.1) 100%);
}

.attachment-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    min-width: 0;
}

.attachment-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.attachment-details {
    flex: 1;
    min-width: 0;
}

.attachment-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.attachment-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.attachment-badge {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    background: rgba(157, 78, 221, 0.2);
    color: var(--electric-purple);
    margin-left: 0.5rem;
}

.attachment-actions {
    display: flex;
    gap: 0.25rem;
}

.attachment-actions .btn-icon-sm {
    padding: 0.25rem;
    font-size: 0.9rem;
}

.attachments-empty {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    padding: 0.5rem;
}

/* ============================================
   TEACHER FRIENDS STYLES
   ============================================ */

/* Friends View Container */
.friends-container {
    padding: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

/* Friends Cards */
.friends-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.friends-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(157, 78, 221, 0.1));
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.friends-card-header .icon {
    font-size: 1.2rem;
}

.friends-card-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.friends-card-body {
    padding: 1rem;
}

/* Add Friend Row */
.add-friend-row {
    display: flex;
    gap: 0.5rem;
}

.add-friend-row .form-control {
    flex: 1;
}

/* Friends Grid */
.friends-grid {
    display: grid;
    gap: 0.75rem;
}

.friend-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.friend-item:hover {
    background: rgba(0, 212, 255, 0.1);
}

.friend-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--electric-purple), var(--cyan-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
    color: white;
}

.friend-info {
    flex: 1;
}

.friend-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.friend-email {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.friend-actions {
    display: flex;
    gap: 0.5rem;
}

/* Pending Requests */
.pending-list {
    display: grid;
    gap: 0.5rem;
}

.pending-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: var(--radius-sm);
}

.pending-item .friend-info {
    flex: 1;
}

.pending-actions {
    display: flex;
    gap: 0.5rem;
}

/* Shared Lessons Grid */
.shared-lessons-grid {
    display: grid;
    gap: 0.75rem;
}

.shared-lesson-item {
    padding: 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--cyan-blue);
    cursor: pointer;
    transition: all 0.2s;
}

.shared-lesson-item:hover {
    background: rgba(0, 212, 255, 0.1);
}

.shared-lesson-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.shared-lesson-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    gap: 1rem;
}

/* Activity Feed */
.activity-feed {
    display: grid;
    gap: 0.5rem;
}

.activity-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
}

.activity-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(157, 78, 221, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.activity-content {
    flex: 1;
}

.activity-text {
    font-size: 0.9rem;
    line-height: 1.4;
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Unread Badge */
.nav-item {
    position: relative;
}

.unread-badge {
    position: absolute;
    top: 2px;
    right: 8px;
    background: var(--neon-pink);
    color: white;
    font-size: 0.65rem;
    padding: 0.1rem 0.35rem;
    border-radius: 10px;
    font-weight: 600;
    min-width: 16px;
    text-align: center;
}

/* Message Modal */
.message-recipient {
    padding: 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.modal-medium {
    max-width: 500px;
}

.modal-large {
    max-width: 700px;
}

/* Share Modal */
.share-lesson-preview {
    padding: 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    border-left: 3px solid var(--cyan-blue);
}

.share-lesson-preview strong {
    display: block;
    margin-bottom: 0.25rem;
}

.share-lesson-preview span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.share-friends-checklist {
    max-height: 200px;
    overflow-y: auto;
}

.share-friend-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: background 0.2s;
}

.share-friend-option:hover {
    background: rgba(0, 212, 255, 0.1);
}

.share-friend-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--cyan-blue);
}

/* Shared Lesson Content */
.shared-lesson-content {
    padding: 1rem;
}

.shared-lesson-section {
    margin-bottom: 1rem;
}

.shared-lesson-section h4 {
    font-size: 0.9rem;
    color: var(--cyan-blue);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.shared-lesson-section p,
.shared-lesson-section pre {
    background: var(--dark-bg);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    white-space: pre-wrap;
    margin: 0;
}

.shared-from {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(157, 78, 221, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

/* Curriculum Library Styles */
.curriculum-library-list {
    display: grid;
    gap: 0.5rem;
}

.curriculum-doc-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.curriculum-doc-item:hover {
    background: rgba(0, 212, 255, 0.1);
}

.curriculum-doc-icon {
    font-size: 1.5rem;
}

.curriculum-doc-info {
    flex: 1;
}

.curriculum-doc-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.curriculum-doc-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.curriculum-doc-actions {
    display: flex;
    gap: 0.25rem;
}

/* Delete button in curriculum library */
.curriculum-doc-actions .btn-icon-sm.btn-danger {
    background: rgba(220, 38, 38, 0.2);
    color: #FF6B6B;
    border: 1px solid rgba(220, 38, 38, 0.4);
    padding: 0.4rem 0.5rem;
    font-size: 0.85rem;
    min-height: 32px;
}

.curriculum-doc-actions .btn-icon-sm.btn-danger:hover {
    background: rgba(220, 38, 38, 0.4);
    color: white;
    border-color: #DC2626;
}

/* ==================== USER PROFILE STYLES ==================== */
.user-profile-section {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.profile-picture-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    min-width: 120px;
}

.profile-picture-container {
    position: relative;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--electric-purple);
    box-shadow: var(--shadow-neon-purple);
}

.profile-picture {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.profile-picture.has-image {
    display: block;
}

.profile-picture-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-synthwave);
    font-size: 2.5rem;
}

.profile-picture-placeholder.hidden {
    display: none;
}

.profile-info-section {
    flex: 1;
}

.profile-info-section .form-group {
    margin-bottom: 1rem;
}

.profile-info-section .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.profile-actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 0.75rem;
}

.account-info-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Mobile profile layout */
@media (max-width: 600px) {
    .user-profile-section {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .profile-info-section .form-row {
        grid-template-columns: 1fr;
    }
    
    .profile-actions {
        justify-content: center;
    }
    
    .account-info-section {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* ==================== FRIENDS SORT TABS ==================== */
.friends-sort-section {
    margin-top: 1.5rem;
}

.friends-sort-section h4 {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.friends-sort-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.sort-tab {
    padding: 0.5rem 1rem;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.sort-tab:hover {
    border-color: var(--cyan-blue);
    color: var(--cyan-blue);
}

.sort-tab.active {
    background: var(--gradient-synthwave);
    border-color: var(--neon-pink);
    color: white;
    box-shadow: var(--shadow-neon-pink);
}

/* Friends Grid */
.friends-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.friend-card {
    background: var(--dark-bg);
    border-radius: var(--radius-md);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.2s;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.friend-card:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--cyan-blue);
}

.friend-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid var(--electric-purple);
}

.friend-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.friend-avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-card);
    font-size: 1.25rem;
}

.friend-info {
    flex: 1;
    min-width: 0;
}

.friend-name {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.friend-details {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.friend-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.15rem 0.4rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.friend-badge.grade {
    background: rgba(0, 212, 255, 0.15);
    color: var(--cyan-blue);
}

.friend-badge.school {
    background: rgba(255, 107, 157, 0.15);
    color: var(--neon-pink);
}

.friend-badge.role {
    background: rgba(157, 78, 221, 0.15);
    color: var(--electric-purple);
}

.friend-badge.district {
    background: rgba(111, 255, 233, 0.15);
    color: var(--miami-teal);
}

.friend-actions {
    display: flex;
    gap: 0.5rem;
}

/* Friends Group Header */
.friends-group {
    margin-bottom: 1.5rem;
}

.friends-group-header {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--cyan-blue);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.friends-group-count {
    background: rgba(0, 212, 255, 0.2);
    padding: 0.1rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 1.5rem;
    font-size: 0.9rem;
}

/* Form Row Helper */
.form-row {
    display: flex;
    gap: 0.5rem;
}

.form-row .form-control {
    flex: 1;
}

/* Friend Request Section in Settings */
.friend-requests-section,
.friends-list-section {
    margin-top: 1rem;
}

.friend-requests-section h4,
.friends-list-section h4 {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* Excel Import Styles */
.excel-import-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.excel-import-step {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    padding: 1rem;
    border-left: 3px solid var(--text-muted);
    transition: border-color 0.3s ease;
}

.excel-import-step:has(.import-preview:not(.hidden)) {
    border-left-color: var(--miami-teal);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--gradient-synthwave);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
}

.step-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.step-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.excel-import-step .form-group {
    margin-bottom: 0;
}

.excel-import-step .import-controls {
    margin-top: 0.5rem;
}

.excel-import-step .import-preview {
    margin-top: 0.75rem;
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
}

.excel-import-step .import-preview h5 {
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.excel-import-step .import-events-list {
    max-height: 200px;
    overflow-y: auto;
}

.import-event-item.matched {
    border-left: 3px solid #2ecc71;
}

.import-event-item.unmatched {
    border-left: 3px solid #e74c3c;
}

.import-event-meta {
    flex-shrink: 0;
    margin-left: 0.5rem;
}

.match-indicator {
    flex-shrink: 0;
    margin-left: auto;
}

/* Smart Import Mode Toggle */
.smart-import-mode-toggle {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    padding: 0.5rem;
}

.smart-import-mode-toggle .btn {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    min-height: 38px;
}

#smart-import-full-mode,
#smart-import-excel-mode {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Column Mapping Grid */
.column-mapping-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mapping-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.mapping-row label {
    flex: 0 0 120px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.mapping-row label .required {
    color: var(--neon-pink);
}

.mapping-row .map-select {
    flex: 1;
    padding: 0.4rem 0.6rem;
    font-size: 0.8rem;
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
}

.mapping-row .map-select:focus {
    border-color: var(--neon-pink);
    outline: none;
}

/* ==================== PHASE 1: CORE INFRASTRUCTURE ==================== */

/* ========== GLOBAL SEARCH BAR ========== */
.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 0 1rem;
    max-width: 500px;
}

.global-search-container {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.global-search-input {
    width: 100%;
    padding: 0.5rem 2.5rem 0.5rem 2.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.85rem;
    transition: all 0.2s;
}

.global-search-input:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--cyan-blue);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
}

.global-search-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    opacity: 0.6;
}

.search-shortcut {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.5);
    font-family: system-ui, sans-serif;
}

/* Hide search bar on mobile */
@media (max-width: 768px) {
    .header-center {
        display: none;
    }
}

/* ========== OFFLINE INDICATOR ========== */
.offline-indicator {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    color: white;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.offline-indicator.hidden {
    display: none;
}

.last-synced {
    opacity: 0.8;
    font-size: 0.75rem;
}

/* ========== KEYBOARD SHORTCUTS MODAL ========== */
.keyboard-shortcuts-content {
    padding: 1rem 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.shortcut-section h4 {
    font-size: 0.85rem;
    color: var(--cyan-blue);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.shortcut-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.4rem 0;
    font-size: 0.85rem;
}

.shortcut-row kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 24px;
    padding: 0 0.5rem;
    background: var(--dark-bg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    font-size: 0.75rem;
    font-family: system-ui, sans-serif;
    color: var(--text-secondary);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.3);
}

.shortcut-row span {
    color: var(--text-secondary);
}

/* ========== SEARCH MODAL ========== */
.search-modal-content {
    max-width: 700px;
}

.search-modal-body {
    padding: 0;
}

.search-input-container {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.search-modal-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--dark-bg);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.search-modal-input:focus {
    border-color: var(--cyan-blue);
    outline: none;
}

.search-filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.search-filter {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.search-filter input {
    accent-color: var(--neon-pink);
}

.search-date-filter {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.search-date-filter input {
    padding: 0.4rem;
    background: var(--dark-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.8rem;
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
    padding: 1rem 1.5rem;
}

.search-hint {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
}

.search-result-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.search-result-item:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--cyan-blue);
}

.search-result-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.search-result-content {
    flex: 1;
    min-width: 0;
}

.search-result-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.search-result-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.search-result-highlight {
    background: rgba(255, 107, 157, 0.3);
    padding: 0 2px;
    border-radius: 2px;
}

.search-result-type {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    background: rgba(157, 78, 221, 0.2);
    color: var(--electric-purple);
    border-radius: 4px;
    text-transform: uppercase;
    font-weight: 600;
}

.search-no-results {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

/* ========== EXPORT/IMPORT MODAL ========== */
.export-modal-body {
    padding: 1.5rem;
}

.export-section,
.import-section {
    margin-bottom: 1rem;
}

.export-section h4,
.import-section h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.export-section p,
.import-section p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.export-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.export-option {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.export-option input {
    accent-color: var(--neon-pink);
}

.export-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 1.5rem 0;
}

.import-warning {
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.3);
    color: #FF6B6B;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

/* ========== UNDO TOAST ========== */
.undo-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 9998;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    animation: slideUp 0.3s ease;
}

.undo-toast.hidden {
    display: none;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

#undo-message {
    font-size: 0.9rem;
}

.undo-btn {
    background: var(--gradient-synthwave);
    border: none;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    color: white;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.undo-btn:hover {
    transform: scale(1.05);
}

.undo-dismiss {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 0.25rem;
}

.undo-dismiss:hover {
    color: var(--text-primary);
}

/* Modal medium size */
.modal-content.modal-medium {
    max-width: 500px;
}

/* ==================== PHASE 2: LESSON MANAGEMENT ==================== */

/* ========== DRAG AND DROP ========== */
.calendar-day.drag-over {
    background: rgba(0, 212, 255, 0.2) !important;
    border: 2px dashed var(--cyan-blue) !important;
    transform: scale(1.02);
}

.calendar-class.dragging,
.lesson-item.dragging {
    opacity: 0.5;
    transform: scale(0.95);
}

.calendar-class.draggable,
.lesson-item.draggable {
    cursor: grab;
}

.calendar-class.draggable:active,
.lesson-item.draggable:active {
    cursor: grabbing;
}

.drag-ghost {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.8;
    transform: rotate(3deg);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.drag-indicator {
    position: fixed;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    border: 1px solid var(--cyan-blue);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    z-index: 9998;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.drag-indicator kbd {
    background: var(--dark-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

/* ========== DUPLICATE WARNING ========== */
.duplicate-warning {
    background: rgba(255, 193, 7, 0.15);
    border: 1px solid rgba(255, 193, 7, 0.4);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.duplicate-warning.hidden {
    display: none;
}

.duplicate-warning .warning-icon {
    font-size: 1.2rem;
}

.duplicate-warning .warning-text {
    flex: 1;
    font-size: 0.85rem;
    color: #FFC107;
}

.duplicate-warning .btn {
    flex-shrink: 0;
}

/* ========== RECURRING LESSONS ========== */
.recurring-section {
    background: rgba(157, 78, 221, 0.1);
    border: 1px solid rgba(157, 78, 221, 0.2);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin-bottom: 1rem;
}

.recurring-section .checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
}

.recurring-section .checkbox-label input {
    accent-color: var(--electric-purple);
    width: 18px;
    height: 18px;
}

.recurring-options {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(157, 78, 221, 0.2);
}

.recurring-options.hidden {
    display: none;
}

.recurring-options .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.recurring-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
    font-style: italic;
}

.recurring-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: rgba(157, 78, 221, 0.2);
    color: var(--electric-purple);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

/* ========== LESSON LINKING ========== */
.linking-section {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin-bottom: 1rem;
}

.link-part-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

.link-part-selector.hidden {
    display: none;
}

.link-part-selector input {
    width: 50px;
    padding: 0.4rem;
    text-align: center;
    background: var(--dark-bg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
}

.linked-lessons-nav {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.linked-lessons-nav.hidden {
    display: none;
}

.linked-lessons-nav h5 {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.linked-lesson-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.6rem;
    background: var(--dark-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 0.25rem;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.85rem;
}

.linked-lesson-item:hover {
    background: rgba(0, 212, 255, 0.2);
}

.linked-lesson-item.current {
    border: 1px solid var(--cyan-blue);
    background: rgba(0, 212, 255, 0.15);
}

.linked-lesson-part {
    font-weight: 600;
    color: var(--cyan-blue);
    min-width: 60px;
}

.linked-lesson-date {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.link-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: rgba(0, 212, 255, 0.2);
    color: var(--cyan-blue);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

/* Calendar lesson with link indicator */
.calendar-class.linked::after {
    content: '🔗';
    position: absolute;
    top: -2px;
    right: -2px;
    font-size: 0.6rem;
}

/* Week view lesson cards */
.lesson-card {
    position: relative;
}

.lesson-card .lesson-badges {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.25rem;
}

/* ========== EDIT HISTORY FOR LINKED LESSONS ========== */
.edit-all-linked {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.edit-all-linked input {
    accent-color: var(--cyan-blue);
}