/* Central Stylesheet - TeachersHelp Design System */

/* Modern Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --bg-main: #f8fafc;        /* Slate 50 */
    --bg-card: #ffffff;        /* White */
    --bg-header: rgba(255, 255, 255, 0.8);
    --border-color: #e2e8f0;   /* Slate 200 */
    --border-hover: #cbd5e1;  /* Slate 300 */
    
    --text-primary: #0f172a;   /* Slate 900 */
    --text-secondary: #475569; /* Slate 600 */
    --text-muted: #64748b;     /* Slate 500 */
    
    --primary: #4f46e5;        /* Indigo 600 */
    --primary-hover: #4338ca;  /* Indigo 700 */
    --primary-light: #eeebff;  /* Indigo 50 */
    --primary-glow: rgba(79, 70, 229, 0.15);
    
    --success: #10b981;        /* Emerald 500 */
    --success-light: #ecfdf5;  /* Emerald 50 */
    --warning: #f59e0b;        /* Amber 500 */
    --error: #ef4444;          /* Red 500 */
    --error-light: #fef2f2;    /* Red 50 */
    
    /* Layout Variables */
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Active view variables */
    --sidebar-width: 250px;
}

/* Dark Mode Overrides (Optional / Future expansion ready) */
[data-theme="dark"] {
    --bg-main: #0b0f19;
    --bg-card: #151c2c;
    --bg-header: rgba(21, 28, 44, 0.85);
    --border-color: #242f47;
    --border-hover: #334466;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #1e1b4b;
    --primary-glow: rgba(99, 102, 241, 0.25);
    --success-light: #064e3b;
    --error-light: #7f1d1d;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.25);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.3);
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    scroll-behavior: smooth;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
}

p {
    line-height: 1.6;
    color: var(--text-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--primary-hover);
}

/* Layout Shell */
#app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navigation Header */
header.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-header);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 1.5rem;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-section i {
    color: var(--primary);
    font-size: 1.5rem;
    filter: drop-shadow(0 2px 8px var(--primary-glow));
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-item {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}

.nav-item:hover {
    background-color: var(--primary-light);
    color: var(--primary);
}

.nav-item.active {
    background-color: var(--primary);
    color: white;
}

.nav-item.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.auth-header-section {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

/* User Profile Pill Controls */
.user-profile-pill {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.45rem 1rem;
    border-radius: 50px;
    background: white;
    border: 1px solid var(--border-color);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    user-select: none;
}

.user-profile-pill:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.avatar-circle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
}

.profile-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    width: 220px;
    display: none;
    z-index: 150;
    padding: 0.5rem;
    animation: dropdownFadeIn 0.2s ease-out;
}

@keyframes dropdownFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.dropdown-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.25rem;
    text-align: left;
}

.dropdown-header strong {
    font-size: 0.75rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dropdown-header p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    margin-top: 0.15rem;
}

.dropdown-item {
    padding: 0.65rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.65rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.dropdown-item:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.dropdown-item.danger {
    color: var(--error);
}

.dropdown-item.danger:hover {
    background: var(--error-light);
    color: var(--error);
}

/* Sync Indicator */
.sync-indicator {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: 50px;
    background-color: var(--border-color);
    color: var(--text-muted);
}

.sync-indicator.synced {
    background-color: var(--success-light);
    color: var(--success);
}

.sync-indicator.syncing {
    background-color: var(--primary-light);
    color: var(--primary);
}

.sync-indicator.offline {
    background-color: var(--error-light);
    color: var(--error);
}

.sync-indicator i.spin {
    animation: fa-spin 2s linear infinite;
}

/* Main Workspace */
main#app-view {
    flex: 1;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* View Pane Switching */
.view-pane {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.view-pane.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Common Components */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 550;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-secondary {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-secondary);
}
.btn-secondary:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background-color: var(--bg-main);
}

.btn-danger {
    background-color: var(--error-light);
    color: var(--error);
    border-color: transparent;
}
.btn-danger:hover {
    background-color: var(--error);
    color: white;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 500px;
    padding: 2.25rem;
    position: relative;
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
}
.modal-close:hover {
    color: var(--text-primary);
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 550;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 0.65rem 0.9rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--bg-card);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Role Selector Radio Cards */
.role-cards-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.role-card-label {
    cursor: pointer;
}

.role-card-input {
    display: none; /* Hide real radio button */
}

.role-card-ui {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition);
    background-color: var(--bg-card);
}

.role-card-ui i {
    font-size: 2rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.role-card-ui h4 {
    font-size: 1.05rem;
    font-weight: 700;
}

.role-card-ui p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Active Radio Card Styling */
.role-card-input:checked + .role-card-ui {
    border-color: var(--primary);
    background-color: var(--primary-light);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.role-card-input:checked + .role-card-ui i {
    color: var(--primary);
    transform: scale(1.1);
}

/* Homepage Landing Layout */
.hero-section {
    text-align: center;
    padding: 4rem 1rem 3rem 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 0.35rem 0.8rem;
    background-color: var(--primary-light);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 50px;
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.hero-section h1 {
    font-size: 3.6rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
    line-height: 1.15;
    background: linear-gradient(135deg, #0f172a 30%, #4f46e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section h1 span {
    background: linear-gradient(135deg, #4f46e5 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section p.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Feature grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 4rem;
}

.feat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
}

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

.feat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
}

.feat-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feat-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Dashboard Panel */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

.dash-main {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.dash-side {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid rgba(226, 232, 240, 0.7);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: var(--shadow-md);
}

.card-title-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.card-title-bar h3 {
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Quick Start Cards */
.quick-start-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.action-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    cursor: pointer;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.action-card:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
    color: var(--primary);
}

.action-card i {
    font-size: 1.75rem;
    color: var(--text-secondary);
}
.action-card:hover i {
    color: var(--primary);
}

.action-card span {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Curriculum Planner Styles */
.planner-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.subjects-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.subject-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-card);
    overflow: hidden;
}

.subject-header {
    padding: 1rem 1.5rem;
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.subject-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.subject-title {
    font-weight: 700;
    font-size: 1.1rem;
}

.subject-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--border-color);
    padding: 0.15rem 0.5rem;
    border-radius: 50px;
}

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

.subject-units {
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.unit-item {
    border-left: 3px solid var(--primary);
    padding-left: 1rem;
}

.unit-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

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

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

.lesson-item {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.lesson-text {
    font-weight: 500;
}

/* Worksheet & Paper Creator Split Layout */
.creator-layout {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 1.5rem;
    height: calc(100vh - 120px);
    overflow: hidden;
}

.editor-pane {
    overflow-y: auto;
    padding-right: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.preview-pane {
    background-color: var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
}

/* Real A4 Paper Look */
.paper-preview {
    background-color: white;
    color: black;
    width: 210mm;
    min-height: 297mm;
    padding: 20mm;
    box-shadow: var(--shadow-lg);
    font-family: 'Georgia', 'Times New Roman', serif;
    position: relative;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border-radius: 2px;
}

.paper-header {
    text-align: center;
    border-bottom: 2px double #000000;
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.paper-school {
    font-size: 1.4rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.paper-title {
    font-size: 1.15rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.paper-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    font-size: 0.85rem;
    text-align: left;
    margin-top: 0.5rem;
}

.paper-info-line {
    border-bottom: 1px dotted #000000;
    padding-bottom: 2px;
}

.paper-questions {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    text-align: left;
}

.paper-q-item {
    font-size: 0.95rem;
    line-height: 1.5;
}

.paper-q-header {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.paper-q-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    padding-left: 1.5rem;
    margin-top: 0.4rem;
}

.paper-q-blank-line {
    margin-top: 0.75rem;
    border-bottom: 1px solid #cccccc;
    height: 1.5rem;
    width: 100%;
}

.paper-q-matching-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding-left: 1.5rem;
    margin-top: 0.4rem;
}

/* Student progress tracker */
.student-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.student-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    transition: var(--transition);
}
.student-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.student-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.student-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.15rem;
}

.student-details h4 {
    font-size: 0.95rem;
}
.student-details p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.student-progress {
    margin-bottom: 1rem;
}

.progress-label-bar {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: var(--text-secondary);
}

.progress-bar-bg {
    background-color: var(--border-color);
    height: 6px;
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar-fill {
    background-color: var(--primary);
    height: 100%;
    border-radius: 10px;
    transition: width 0.5s ease-out;
}

/* Flashcard Styles */
.flashcards-container {
    max-width: 600px;
    margin: 2rem auto;
    text-align: center;
}

.flashcard-wrapper {
    perspective: 1000px;
    width: 100%;
    height: 350px;
    margin-bottom: 2rem;
    cursor: pointer;
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
}

.flashcard-wrapper.flipped .flashcard-inner {
    transform: rotateY(180deg);
}

.flashcard-front, .flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.flashcard-front {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.flashcard-back {
    background-color: var(--primary-light);
    color: var(--primary);
    transform: rotateY(180deg);
}

.flashcard-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.flashcard-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    padding: 0.8rem 1.25rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
    border-left: 4px solid var(--primary);
    min-width: 250px;
    font-size: 0.85rem;
}

.toast.success {
    border-left-color: var(--success);
}

.toast.error {
    border-left-color: var(--error);
}

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

/* Homepage Redesign Styles */

/* Side-by-Side Role Section */
.role-split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 4rem;
    width: 100%;
}

.role-split-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

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

.role-split-card.teacher-color:hover {
    border-color: var(--primary);
}

.role-split-card.parent-color:hover {
    border-color: #8b5cf6; /* Violet accent for parent */
}

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

.role-split-header i {
    font-size: 2.25rem;
    color: var(--primary);
    filter: drop-shadow(0 2px 6px var(--primary-glow));
}

.role-split-card.parent-color .role-split-header i {
    color: #8b5cf6;
    filter: drop-shadow(0 2px 6px rgba(139, 92, 246, 0.15));
}

.role-split-header h3 {
    font-size: 1.4rem;
    font-weight: 700;
}

.role-feature-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.role-feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.role-feature-list li i {
    color: var(--success);
    margin-top: 0.2rem;
    font-size: 0.95rem;
}

/* Homepage CSS UI Mockup Previews */
.homepage-previews-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin-top: 2rem;
    margin-bottom: 4rem;
    justify-items: center;
    width: 100%;
}

.preview-card-wrapper {
    width: 100%;
    max-width: 420px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.preview-card-tag {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-muted);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* CSS Mock Worksheet Graphic */
.mock-worksheet {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    height: 320px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    pointer-events: none;
}

.mock-worksheet-header {
    border-bottom: 2px double var(--border-color);
    padding-bottom: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mock-line {
    background-color: #cbd5e1;
    height: 6px;
    border-radius: 3px;
}

.mock-line.long { width: 60%; margin: 0 auto; background-color: #94a3b8; }
.mock-line.short { width: 35%; margin: 0 auto; }

.mock-line-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 0.25rem;
}

.mock-line-field {
    background-color: #e2e8f0;
    height: 5px;
    border-radius: 3px;
}

.mock-worksheet-body {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mock-question {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.mock-q-text {
    font-size: 0.8rem;
    font-weight: 600;
    color: #334155;
}

.mock-q-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.25rem;
    padding-left: 0.75rem;
    font-size: 0.7rem;
    color: #64748b;
}

.mock-q-blank {
    border-bottom: 1px dashed #94a3b8;
    width: 50%;
    height: 10px;
    margin-left: 0.75rem;
}

/* CSS Mock Tracker Graphic */
.mock-tracker {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    height: 320px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    pointer-events: none;
}

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

.mock-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
}

.mock-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: #1e293b;
}

.mock-sub {
    font-size: 0.65rem;
    color: #64748b;
}

.mock-progress {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.mock-progress-bar-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    font-weight: 700;
    color: #475569;
}

.mock-progress-bar {
    background-color: #f1f5f9;
    height: 6px;
    border-radius: 10px;
}

.mock-progress-fill {
    background-color: var(--primary);
    height: 100%;
    border-radius: 10px;
}

.mock-milestones-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mock-m-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: #334155;
}

.mock-m-item i {
    color: var(--success);
    font-size: 0.8rem;
}

/* Responsive grid scales on tablet/mobile */
@media (max-width: 820px) {
    .role-split-section {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .homepage-previews-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Print Styling */
@media print {
    body, #app-container, main#app-view {
        background: white !important;
        color: black !important;
        margin: 0 !important;
        padding: 0 !important;
        display: block !important;
        height: auto !important;
    }
    
    header.app-header, 
    .nav-links, 
    .auth-header-section, 
    .editor-pane, 
    .preview-pane, 
    .btn, 
    .no-print {
        display: none !important;
    }
    
    .creator-layout {
        display: block !important;
        height: auto !important;
        overflow: visible !important;
    }

    .preview-pane {
        padding: 0 !important;
        background: transparent !important;
        overflow: visible !important;
    }
    
    .paper-preview {
        box-shadow: none !important;
        border: none !important;
        margin: 0 !important;
        padding: 0 !important;
        width: 100% !important;
        min-height: auto !important;
        display: block !important;
    }

    .page-break {
        page-break-after: always;
    }
}

/* Background Blobs Styling */
.bg-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
    opacity: 0.35;
    filter: blur(100px);
    -webkit-filter: blur(100px);
}

.blob-1 {
    position: absolute;
    top: -15%;
    right: -10%;
    width: 45vw;
    height: 45vw;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.45) 0%, rgba(139, 92, 246, 0.1) 70%);
    border-radius: 50%;
}

.blob-2 {
    position: absolute;
    bottom: -15%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.35) 0%, rgba(236, 72, 153, 0.05) 70%);
    border-radius: 50%;
}

/* Lesson Planner Wizard Styles */
.wizard-step-pane {
    display: none;
    animation: slideIn 0.3s ease-out;
}
.wizard-step-pane.active {
    display: block;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(15px); }
    to { opacity: 1; transform: translateX(0); }
}

.option-pill-card {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(226, 232, 240, 0.8);
    background: #f8fafc;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}
.option-pill-card:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-1px);
}
.option-pill-card.selected {
    background: var(--primary);
    color: white !important;
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.option-card-lg {
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(226, 232, 240, 0.8);
    background: white;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}
.option-card-lg i {
    font-size: 1.75rem;
    color: var(--text-muted);
    transition: var(--transition);
}
.option-card-lg strong {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}
.option-card-lg p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.4;
}
.option-card-lg:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.option-card-lg:hover i {
    color: var(--primary);
}
.option-card-lg.selected {
    background: var(--primary-light);
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}
.option-card-lg.selected i {
    color: var(--primary);
}

.option-card-row {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(226, 232, 240, 0.8);
    background: white;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1rem;
    user-select: none;
}
.option-card-row:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}
.option-card-row.selected {
    background: var(--primary-light);
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* AI loader animations */
.ai-loader-ring {
    animation: spin 1.2s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Slide-Over Guide Drawer */
.details-drawer {
    position: fixed;
    top: 0;
    right: -560px;
    width: 520px;
    height: 100vh;
    background: white;
    box-shadow: -10px 0 30px rgba(15, 23, 42, 0.08);
    z-index: 250;
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--border-color);
}

.details-drawer.active {
    right: 0;
}

.drawer-header {
    padding: 1.25rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f8fafc;
}

.drawer-body {
    padding: 2rem;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

/* Stepper Process Flowcharts */
.flowchart-container {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    position: relative;
    padding-left: 0.5rem;
}

.flowchart-node {
    background-color: var(--primary-light);
    border: 1px solid rgba(99, 102, 241, 0.15);
    color: var(--primary);
    padding: 0.65rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.flowchart-node i {
    font-size: 0.9rem;
}

.flowchart-arrow {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin: 0.15rem 0;
}

/* SVG Diagrams Container */
.svg-frame svg {
    max-width: 100%;
    height: auto;
}

/* Print Custom Sheet Styles (for pdf exports) */
.print-sheet-layout {
    font-family: 'Outfit', sans-serif;
    color: #0f172a;
    padding: 3rem;
}

.print-sheet-layout h2 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

/* Upload File Pills */
.upload-file-pill i.fa-circle-xmark:hover {
    color: var(--error) !important;
}
.file-dropzone:hover {
    background-color: var(--primary-light) !important;
    border-color: var(--primary) !important;
}

/* Simulator option card styles */
.option-card-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--card-bg);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.option-card-row:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--primary);
}