/* =================================================================
   CEBUANO LEARNING PLATFORM - CORE STYLES
   Version 3.1 - November 2025
   Shared base styles, variables, components
   ================================================================= */

:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #E0E7FF;
    --secondary: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    --success: #10B981;
    --success-light: #D1FAE5;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --border-color: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    --spacing-base: 16px;
    --spacing-small: 8px;
    --spacing-large: 24px;
}

[data-theme="dark"] {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #312E81;
    --success-light: #064E3B;
    --bg-primary: #1F2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --border-color: #374151;
    --gray-100: #374151;
    --gray-200: #4B5563;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* =================================================================
   HEADER
   ================================================================= */

.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.header-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-title h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-image {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.version-badge {
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

/* Version badge responsive display */
.version-inline-mobile {
    display: none; /* Hidden by default, shown on mobile */
}

.version-desktop {
    display: inline-block; /* Shown by default, hidden on mobile */
}

/* =================================================================
   CONSTRUCTION BANNER
   ================================================================= */

.construction-banner {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #1a1a1a;
    text-align: center;
    padding: 12px 20px;
    font-weight: 700;
    font-size: 16px;
    border-top: 3px solid #ff6b00;
    border-bottom: 3px solid #ff6b00;
    box-shadow: 0 2px 8px rgba(255, 107, 0, 0.3);
    letter-spacing: 2px;
    margin-bottom: 0;
}

.construction-banner i {
    margin: 0 12px;
    animation: pulse-warning 1.5s ease-in-out infinite;
}

@keyframes pulse-warning {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.language-selector,
.lesson-selector {
    display: flex;
    align-items: center;
    gap: 8px;
}

.language-selector label,
.lesson-selector label {
    color: var(--text-secondary);
    font-size: 16px;
}

.select-control {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 150px;
}

.select-control:hover {
    background: var(--gray-100);
    border-color: var(--primary);
}

.select-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}

.theme-toggle:hover {
    background: var(--gray-100);
}

/* Login Button in Header */
.login-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-weight: 500;
    transition: all 0.2s;
    margin-left: 8px;
}

.login-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    filter: brightness(1.1);
}

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

/* =================================================================
   README FLOATING BADGE
   ================================================================= */

.readme-floating-badge {
    position: fixed;
    top: 100px;
    right: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    padding: 20px;
    max-width: 320px;
    width: 100%;
    z-index: 1000;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.readme-floating-badge.hidden {
    opacity: 0;
    transform: translateX(400px);
    pointer-events: none;
}

.readme-floating-badge.show {
    opacity: 1;
    transform: translateX(0);
}

.readme-badge-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.readme-badge-pulse {
    width: 12px;
    height: 12px;
    background: #dc2626;
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
    margin-top: 2px;
    animation: readme-pulse 2s ease-in-out infinite;
}

@keyframes readme-pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.readme-badge-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: #1f2937;
    flex: 1;
    line-height: 1.4;
}

.readme-badge-close {
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    font-size: 16px;
    padding: 0;
    line-height: 1;
    transition: color 0.2s;
}

.readme-badge-close:hover {
    color: #4b5563;
}

.readme-badge-content {
    margin-bottom: 16px;
}

.readme-badge-content p {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.5;
    margin: 0;
}

.readme-badge-btn-primary,
.readme-badge-btn-agree {
    width: 100%;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.readme-badge-btn-primary {
    background: #dc2626;
    color: #fbbf24;
    margin-bottom: 8px;
}

.readme-badge-btn-primary:hover {
    background: #b91c1c;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(220, 38, 38, 0.3);
}

.readme-badge-btn-primary:active {
    transform: translateY(0);
}

.readme-badge-btn-agree {
    background: #16a34a;
    color: white;
}

.readme-badge-btn-agree:hover {
    background: #15803d;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(22, 163, 74, 0.3);
}

.readme-badge-btn-agree:active {
    transform: translateY(0);
}

/* Dark mode adjustments */
[data-theme="dark"] .readme-floating-badge {
    background: #1f2937;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .readme-badge-header h3 {
    color: #f9fafb;
}

[data-theme="dark"] .readme-badge-content p {
    color: #9ca3af;
}

[data-theme="dark"] .readme-badge-close {
    color: #6b7280;
}

[data-theme="dark"] .readme-badge-close:hover {
    color: #9ca3af;
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .readme-floating-badge {
        top: auto;
        bottom: 20px;
        right: 20px;
        left: 20px;
        max-width: none;
    }

    .readme-floating-badge.hidden {
        transform: translateY(400px);
    }
}

/* =================================================================
   NAVIGATION TABS
   ================================================================= */

.container {
    max-width: 95%;
    width: 95%;
    margin: 0 auto;
    padding: 0 20px 40px;
}

.nav-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
}

.nav-tab {
    background: transparent;
    border: none;
    padding: 12px 18px;
    cursor: pointer;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.nav-tab:hover {
    color: var(--primary);
}

.nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Two-level navigation styles */
.nav-level-2 {
    background: var(--bg-tertiary);
    border-radius: 8px 8px 0 0;
    padding: 4px 4px 0;
}

.nav-tab.nav-back {
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-radius: 6px;
    margin-right: 8px;
    padding: 10px 16px;
    border-bottom: none;
    margin-bottom: 0;
}

.nav-tab.nav-back:hover {
    background: var(--gray-200);
    color: var(--text-primary);
}

.nav-tab.nav-category {
    position: relative;
}

.nav-tab.nav-category::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 10px;
    margin-left: 4px;
    opacity: 0.6;
}

/* Coming Soon Badge */
.nav-tab.coming-soon {
    position: relative;
    opacity: 0.7;
    cursor: default;
    overflow: hidden;
}

.coming-soon-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-15deg);
    background: linear-gradient(135deg, #ff6b6b, #ee5a5a);
    color: white;
    font-size: 10px;
    font-weight: 700;
    padding: 4px 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 6px rgba(238, 90, 90, 0.4);
    white-space: nowrap;
    z-index: 1;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* =================================================================
   MOBILE NAVIGATION (Hamburger Menu)
   ================================================================= */

.mobile-nav-toggle {
    display: none;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 20px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px 12px;
    transition: all 0.2s ease;
    margin-right: 8px;
}

.mobile-nav-toggle:hover {
    background: var(--bg-secondary);
    transform: scale(1.05);
}

.mobile-nav-toggle:active {
    transform: scale(0.95);
}

.mobile-nav-menu {
    position: fixed;
    top: 0;
    left: -300px;
    width: 280px;
    height: 100vh;
    background: var(--bg-primary);
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.15);
    transition: left 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
}

.mobile-nav-menu.open {
    left: 0;
}

.mobile-nav-header {
    background: var(--primary);
    color: white;
    padding: 20px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-nav-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.mobile-nav-close {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    padding: 4px;
}

.mobile-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.2s;
}

.mobile-nav-item:hover {
    background: var(--bg-secondary);
}

.mobile-nav-item.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 600;
}

.mobile-nav-item i {
    width: 20px;
    text-align: center;
    color: var(--text-secondary);
}

.mobile-nav-item.active i {
    color: var(--primary);
}

.mobile-nav-item .fa-chevron-right {
    margin-left: auto;
    font-size: 12px;
    opacity: 0.5;
}

/* Mobile nav chevron for expandable categories */
.mobile-nav-chevron {
    margin-left: auto;
    font-size: 14px;
    transition: transform 0.3s ease;
}

.mobile-nav-category.expanded .mobile-nav-chevron {
    transform: rotate(180deg);
}

/* Mobile nav submenu (expandable) */
.mobile-nav-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: var(--bg-secondary);
}

.mobile-nav-submenu.expanded {
    max-height: 500px;
}

/* Sub-items with indentation */
.mobile-nav-subitem {
    padding-left: 48px;
    background: var(--bg-secondary);
    font-size: 14px;
}

.mobile-nav-subitem:hover {
    background: var(--bg-hover);
}

/* Coming soon styling for mobile menu items */
.mobile-nav-item.coming-soon {
    opacity: 0.6;
    cursor: default;
    position: relative;
}

.coming-soon-badge-mobile {
    margin-left: auto;
    padding: 2px 8px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a5a);
    color: white;
    font-size: 10px;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 999;
}

.mobile-nav-overlay.show {
    opacity: 1;
    pointer-events: all;
}

/* Mobile styles - hamburger menu only */
@media (max-width: 768px) {
    .mobile-nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-tabs {
        display: none !important;
    }

    .header-title h1 {
        font-size: 16px;
    }

    .header-controls {
        gap: 8px;
        flex-wrap: wrap;
    }

    /* Version badge responsive behavior */
    .version-desktop {
        display: none !important; /* Hide desktop version on mobile */
    }

    .version-inline-mobile {
        display: inline !important; /* Show inline version on mobile */
        margin-left: 6px;
        font-size: 10px;
        padding: 2px 8px;
    }
}

/* Dark mode adjustments */
[data-theme="dark"] .mobile-nav-menu {
    background: var(--bg-secondary);
}

[data-theme="dark"] .mobile-nav-item:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .mobile-nav-item.active {
    background: var(--primary-light);
}

/* =================================================================
   CARDS
   ================================================================= */

.card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    margin-bottom: 20px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.card-description {
    font-size: 14px;
    color: var(--text-secondary);
}

/* =================================================================
   BUTTONS
   ================================================================= */

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    background: var(--gray-200);
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--gray-100);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    opacity: 0.9;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* START AND RESTART BUTTONS */
#startBtn,
button[id*="restart"],
button[id*="Restart"] {
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

#startBtn:hover,
button[id*="restart"]:hover,
button[id*="Restart"]:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

#startBtn:active,
button[id*="restart"]:active,
button[id*="Restart"]:active {
    transform: translateY(0);
}

.btn-secondary[id*="restart"],
.btn-secondary[id*="Restart"] {
    background: var(--secondary);
    color: white;
    border: none;
    padding: 14px 28px;
    font-size: 16px;
}

.btn-secondary[id*="restart"]:hover,
.btn-secondary[id*="Restart"]:hover {
    background: #0ea572;
    transform: translateY(-2px);
}

/* =================================================================
   FORMS
   ================================================================= */

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 12px 0;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group label {
    cursor: pointer;
    font-size: 14px;
    user-select: none;
}

/* =================================================================
   MODALS
   ================================================================= */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease;
}

.modal-content.large {
    max-width: 900px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.close-btn {
    background: transparent;
    border: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.close-btn:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* =================================================================
   SCAN MODAL
   ================================================================= */

.scan-section {
    padding: 24px;
}

.scan-section.hidden {
    display: none;
}

.scan-message {
    text-align: center;
    color: var(--text-secondary);
    margin-top: 16px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: all 0.2s;
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 12px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    display: block;
    margin: 8px 0;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.validation-list {
    max-height: 200px;
    overflow-y: auto;
}

.validation-item {
    padding: 12px;
    margin-bottom: 8px;
    border-radius: 8px;
    background: var(--bg-secondary);
    border-left: 4px solid var(--warning);
}

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

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

.no-issues {
    text-align: center;
    padding: 24px;
    color: var(--success);
    font-weight: 500;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    max-height: 400px;
    overflow-y: auto;
}

.preview-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    text-align: center;
    transition: all 0.2s;
}

.preview-card:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

.preview-card img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 8px;
}

.preview-card .cebuano {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
}

.preview-card .english {
    font-size: 11px;
    color: var(--text-secondary);
}

.preview-card .audio-indicator {
    margin-top: 4px;
    font-size: 14px;
}

.action-buttons {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
}

/* =================================================================
   TOAST NOTIFICATIONS
   ================================================================= */

.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 2000;
}

.toast {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 400px;
    animation: slideIn 0.3s ease;
}

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

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--error);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast-icon {
    font-size: 20px;
}

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

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

.toast.warning .toast-icon {
    color: var(--warning);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 4px;
}

.toast-message {
    font-size: 13px;
    color: var(--text-secondary);
}

/* =================================================================
   EMPTY STATE
   ================================================================= */

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 64px;
    color: var(--gray-200);
    margin-bottom: 16px;
    display: block;
}

.empty-state p {
    font-size: 16px;
    margin-bottom: 24px;
}

.empty-state.error i {
    color: var(--error);
}

/* =================================================================
   INSTRUCTION MODAL
   ================================================================= */

.instruction-modal {
    max-width: 500px;
    text-align: center;
}

.instruction-modal .modal-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 20px;
    border-radius: 12px 12px 0 0;
}

.instruction-modal .modal-header h2 {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
}

.instruction-body {
    padding: 32px 24px;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
}

.instruction-body p {
    margin: 0;
}

.instruction-footer {
    padding: 20px 24px;
    background: var(--bg-secondary);
    border-radius: 0 0 12px 12px;
}

.instruction-footer .btn {
    min-width: 150px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
}

/* =================================================================
   LOGIN MODAL
   ================================================================= */

.login-modal {
    max-width: 450px;
}

.login-modal .modal-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 20px 24px;
    border-radius: 12px 12px 0 0;
}

.login-modal .modal-header h2 {
    margin: 0;
    font-size: 22px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
}

.login-modal .modal-body {
    padding: 24px;
}

.login-modal .form-group {
    margin-bottom: 0;
}

.login-error {
    background: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--error);
    padding: 12px;
    border-radius: 4px;
    color: var(--error);
    font-size: 14px;
    margin-top: 16px;
}

.login-error.hidden {
    display: none;
}

/* =================================================================
   ADVANCED FILTER MODAL
   ================================================================= */

.filter-button-container {
    display: flex;
    align-items: center;
}

#advancedFilterBtn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}

#advancedFilterBtn:hover {
    background: var(--gray-100);
    border-color: var(--primary);
}

#advancedFilterBtn.filter-active {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

#advancedFilterBtn .filter-indicator {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    display: none;
}

#advancedFilterBtn.filter-active .filter-indicator {
    display: inline-block;
}

.filter-modal {
    max-width: 600px;
    width: 95%;
}

.filter-modal .modal-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 20px 24px;
    border-radius: 12px 12px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.filter-modal .modal-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
}

.filter-modal .modal-header .btn-icon {
    color: white;
    opacity: 0.8;
}

.filter-modal .modal-header .btn-icon:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

.filter-modal .modal-body {
    padding: 24px;
    max-height: 60vh;
    overflow-y: auto;
}

.filter-group {
    margin-bottom: 20px;
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.filter-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-group select:hover {
    border-color: var(--primary);
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.lesson-range-row {
    display: flex;
    gap: 16px;
}

.lesson-range-row .filter-group {
    flex: 1;
    margin-bottom: 0;
}

.filter-hint {
    font-size: 12px;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 4px;
}

.filter-match-count {
    text-align: center;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-top: 20px;
    border: 1px solid var(--border-color);
}

#filterMatchCount {
    font-size: 18px;
    font-weight: 700;
    color: var(--success);
}

.filter-footer {
    display: flex;
    gap: 12px;
    justify-content: space-between;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: 0 0 12px 12px;
}

.filter-footer .btn {
    flex: 1;
    justify-content: center;
}

.filter-section-divider {
    border-top: 1px solid var(--border-color);
    margin: 20px 0;
    padding-top: 20px;
}

.filter-section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

/* =================================================================
   UTILITY CLASSES
   ================================================================= */

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 8px;
}

.mt-2 {
    margin-top: 16px;
}

.mb-1 {
    margin-bottom: 8px;
}

.mb-2 {
    margin-bottom: 16px;
}

/* =================================================================
   TEACHER'S PLAN BUILDER STYLES
   For the Deckbuilder addon section
   ================================================================= */

/* Import tabs */
.tp-builder-import {
    margin-bottom: 24px;
}

.tp-import-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.tp-import-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.15s;
}

.tp-import-tab:hover {
    background: var(--bg-secondary);
}

.tp-import-tab.active {
    background: var(--bg-primary);
    border-bottom-color: var(--bg-primary);
    color: var(--primary);
    font-weight: 500;
}

.tp-import-tab-content {
    display: none;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 0 8px 8px 8px;
    margin-top: -1px;
    background: var(--bg-primary);
}

.tp-import-tab-content.active {
    display: block;
}

/* CSV Upload Area */
.tp-csv-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
    background: var(--bg-secondary);
}

.tp-csv-upload-area:hover,
.tp-csv-upload-area.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.tp-csv-upload-area i {
    font-size: 48px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.tp-csv-upload-area p {
    color: var(--text-secondary);
}

.tp-csv-file-input {
    display: none;
}

.tp-csv-file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.tp-csv-file-info i {
    font-size: 24px;
    color: var(--success);
}

.tp-csv-remove-btn {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--error);
    cursor: pointer;
    font-size: 16px;
}

/* Preview Section */
.tp-csv-preview-summary {
    display: flex;
    gap: 24px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 16px;
}

.tp-csv-preview-summary .summary-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.tp-preview-lesson {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.tp-preview-lesson-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    font-weight: 500;
}

.tp-preview-section {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
}

.tp-preview-section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.tp-preview-section-header .activity-count {
    margin-left: auto;
    font-size: 12px;
}

.tp-preview-activities {
    padding-left: 20px;
}

.tp-preview-activity {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 14px;
}

.tp-preview-activity .activity-num {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 24px;
}

.tp-preview-activity .activity-pattern {
    flex: 1;
}

.tp-preview-activity .activity-english {
    color: var(--text-secondary);
    font-style: italic;
}

.tp-preview-activity .activity-action {
    color: var(--primary);
}

/* Preview bubbles */
.tp-preview-bubble {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    background: var(--primary-light);
    color: var(--primary);
    margin: 0 2px;
}

.tp-preview-bubble.choice {
    background: #fef3c7;
    color: #92400e;
}

.tp-preview-bubble.function {
    background: var(--gray-100);
    color: var(--text-secondary);
}

.tp-preview-bubble.no-card {
    background: #fee2e2;
    color: #dc2626;
}

/* Lessons List */
.tp-empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.tp-empty-state i {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.tp-lesson-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 8px;
    overflow: hidden;
}

.tp-lesson-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: background 0.15s;
}

.tp-lesson-header:hover {
    background: var(--gray-200);
}

.tp-lesson-header .expand-icon {
    color: var(--text-secondary);
    font-size: 14px;
}

.tp-lesson-header .lesson-title {
    font-weight: 500;
}

.tp-lesson-header .activity-count {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-secondary);
}

.tp-lesson-header .edited-badge {
    background: var(--warning);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
}

.tp-lesson-content {
    padding: 12px 16px;
}

.tp-lesson-content.hidden {
    display: none;
}

/* Sections List */
.tp-sections-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tp-section-item {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.tp-section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: background 0.15s;
}

.tp-section-header:hover {
    background: var(--bg-tertiary);
}

.tp-section-header .section-icon {
    color: var(--primary);
}

.tp-section-header .section-title {
    font-weight: 500;
    font-size: 14px;
}

.tp-section-header .activity-count {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-secondary);
}

.tp-section-content {
    padding: 10px 14px;
}

.tp-section-content.hidden {
    display: none;
}

/* Activities List */
.tp-activities-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tp-no-activities {
    color: var(--text-secondary);
    font-style: italic;
    padding: 10px 0;
}

.tp-activity-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    transition: box-shadow 0.15s;
}

.tp-activity-item:hover {
    box-shadow: var(--shadow-sm);
}

.tp-activity-drag-handle {
    cursor: grab;
    color: var(--text-secondary);
    padding: 4px;
}

.tp-activity-drag-handle:active {
    cursor: grabbing;
}

.tp-activity-num {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 20px;
}

.tp-activity-pattern {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.tp-activity-english {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 13px;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tp-activity-action {
    color: var(--primary);
}

.tp-activity-actions {
    display: flex;
    gap: 4px;
}

/* Activity Bubbles */
.tp-bubble {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 14px;
    font-size: 13px;
    background: var(--primary-light);
    color: var(--primary);
    cursor: pointer;
    transition: all 0.15s;
}

.tp-bubble:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.tp-bubble.choice {
    background: #fef3c7;
    color: #92400e;
    border: 1px dashed #f59e0b;
}

.tp-bubble.function {
    background: var(--gray-100);
    color: var(--text-secondary);
}

.tp-bubble.no-card {
    background: #fee2e2;
    color: #dc2626;
}

/* Card Linker Modal */
.tp-card-linker-modal .modal-content {
    max-width: 600px;
}

.tp-current-link {
    margin-bottom: 20px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.tp-current-link h4 {
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}

.tp-current-card {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tp-current-card img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.tp-search-section h4 {
    margin-bottom: 12px;
}

.tp-search-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.tp-search-bar input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
}

.tp-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
    max-height: 300px;
    overflow-y: auto;
    padding: 4px;
}

.tp-card-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s;
}

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

.tp-card-option img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-bottom: 6px;
}

.tp-card-option .card-word {
    font-size: 12px;
    font-weight: 500;
    text-align: center;
}

.tp-card-option .card-english {
    font-size: 10px;
    color: var(--text-secondary);
    text-align: center;
}

.tp-card-option .no-image {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 10px;
    color: var(--text-secondary);
}

.tp-remove-link-section {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

/* Dual-Layer Layout */
.tp-dual-layer-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 20px;
}

.tp-main-content {
    min-width: 0; /* Prevent grid blowout */
}

.tp-toolkit-sidebar {
    background: linear-gradient(180deg, #fef3c7 0%, #fde68a 100%);
    border-radius: 12px;
    padding: 16px;
    border: 2px solid var(--warning);
    max-height: calc(100vh - 200px);
    overflow-y: auto;
    position: sticky;
    top: 20px;
}

.toolkit-empty {
    text-align: center;
    padding: 24px 12px;
    color: #92400e;
}

.toolkit-empty i {
    font-size: 36px;
    opacity: 0.5;
    margin-bottom: 12px;
}

.toolkit-empty .hint {
    font-size: 12px;
    opacity: 0.8;
    margin-top: 8px;
}

.toolkit-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.toolkit-header h4 {
    font-size: 14px;
    font-weight: 600;
    color: #92400e;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolkit-count {
    font-size: 11px;
    background: rgba(146, 64, 14, 0.2);
    padding: 2px 8px;
    border-radius: 10px;
    color: #92400e;
}

.toolkit-section {
    margin-bottom: 16px;
}

.toolkit-section h5 {
    font-size: 12px;
    font-weight: 600;
    color: #92400e;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.word-chips,
.affix-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.word-chip,
.affix-chip {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.15s;
    background: rgba(255, 255, 255, 0.8);
    color: #374151;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.word-chip:hover,
.affix-chip:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Affix type colors */
.affix-chip.command {
    background: rgba(34, 197, 94, 0.2);
    color: #166534;
    border-color: rgba(34, 197, 94, 0.4);
}

.affix-chip.statement {
    background: rgba(99, 102, 241, 0.2);
    color: #3730a3;
    border-color: rgba(99, 102, 241, 0.4);
}

.affix-chip.modifier {
    background: rgba(245, 158, 11, 0.2);
    color: #92400e;
    border-color: rgba(245, 158, 11, 0.4);
}

/* Word category colors */
.word-chip.qna { border-left: 3px solid var(--lw-qword-color, #f59e0b); }
.word-chip.verbs { border-left: 3px solid var(--lw-verb-color, #8b5cf6); }
.word-chip.nouns { border-left: 3px solid var(--lw-noun-color, #3b82f6); }
.word-chip.pronouns { border-left: 3px solid var(--lw-pronoun-color, #10b981); }
.word-chip.adjectives { border-left: 3px solid #f97316; }
.word-chip.numbers { border-left: 3px solid #06b6d4; }
.word-chip.functionWords { border-left: 3px solid var(--lw-function-color, #6b7280); }
.word-chip.adverbs { border-left: 3px solid #84cc16; }
.word-chip.prepositions { border-left: 3px solid #a855f7; }
.word-chip.special { border-left: 3px solid #6b7280; }

/* Toolkit Preview Section */
.tp-toolkit-preview-summary {
    display: flex;
    gap: 24px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 16px;
}

.tp-toolkit-preview-summary .summary-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tp-toolkit-preview-summary .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.tp-toolkit-preview-summary .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.tp-preview-affixes,
.tp-preview-categories {
    margin-bottom: 16px;
}

.tp-preview-affixes h5,
.tp-preview-categories h5 {
    font-size: 14px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.affix-groups {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.affix-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.affix-type {
    font-weight: 600;
    min-width: 80px;
}

.affix-list {
    color: var(--text-secondary);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}

.category-item {
    padding: 10px 14px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 4px solid var(--border-color);
}

.category-item strong {
    display: block;
    margin-bottom: 4px;
}

.category-item .word-count {
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: 4px;
}

.category-words {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 6px;
}

/* Responsive: Stack on smaller screens */
@media (max-width: 900px) {
    .tp-dual-layer-layout {
        grid-template-columns: 1fr;
    }

    .tp-toolkit-sidebar {
        position: static;
        max-height: none;
        order: -1; /* Show toolkit first on mobile */
    }
}

/* =================================================================
   TEACHER'S PLAN MODULE STYLES
   For the teacher-facing GPA/TPR display
   ================================================================= */

.module-teacher-plan {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.teacher-plan-header h1 {
    font-size: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.teacher-plan-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.toolbar-left,
.toolbar-center,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* View Toggle */
.view-toggle {
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.view-toggle button {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    background: transparent;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    color: var(--text-secondary);
}

.view-toggle button:hover {
    background: var(--bg-tertiary);
}

.view-toggle button.active {
    background: var(--primary);
    color: white;
}

/* Current Sentence Display */
.current-sentence-display {
    background: var(--bg-primary);
    border: 2px solid var(--primary);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-md);
}

.current-sentence-display.hidden {
    display: none;
}

.current-sentence-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}

.current-sentence-content {
    text-align: center;
}

.current-section-label {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.current-pattern {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}

.current-english {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 16px;
}

/* Large bubbles for current sentence */
.large-bubble {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    border-radius: 24px;
    font-size: 20px;
    font-weight: 500;
    background: var(--primary-light);
    color: var(--primary);
}

.large-bubble.choice {
    background: #fef3c7;
    color: #92400e;
}

.large-bubble.function {
    background: var(--gray-100);
    color: var(--text-secondary);
}

.large-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
}

.large-card img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin-bottom: 8px;
}

.large-card .card-label {
    font-size: 14px;
    font-weight: 500;
}

.choice-separator {
    color: var(--text-secondary);
    font-size: 20px;
    margin: 0 4px;
}

/* Lesson Plan Sections */
.lesson-plan-sections {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.plan-section {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.plan-section .section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-left: 4px solid var(--primary);
}

.plan-section .section-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.plan-section .section-header .activity-count {
    margin-left: auto;
    font-size: 13px;
    color: var(--text-secondary);
}

.section-activities {
    padding: 16px 20px;
}

.section-activities .no-activities {
    color: var(--text-secondary);
    font-style: italic;
}

/* Activity Items */
.activity-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.15s;
}

.activity-item:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
}

.activity-item .activity-num {
    font-weight: 600;
    color: var(--primary);
    min-width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: 50%;
    font-size: 13px;
}

.activity-item .activity-pattern {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.activity-item .activity-english {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 14px;
}

.activity-item .activity-action {
    color: var(--primary);
    font-size: 18px;
}

/* Pattern bubbles */
.bubble {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 14px;
    font-weight: 500;
    background: var(--primary-light);
    color: var(--primary);
}

.bubble.choice {
    background: #fef3c7;
    color: #92400e;
}

.bubble.function {
    background: var(--gray-100);
    color: var(--text-secondary);
}

/* Mini cards (in cards mode) */
.mini-card {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 6px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.mini-card img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.mini-card .card-label {
    font-size: 10px;
    margin-top: 4px;
}

/* Cards mode styling */
.lesson-plan-sections.cards-mode .bubble {
    display: none;
}

/* Toolkit Sidebar */
.teacher-plan-toolkit {
    position: fixed;
    right: 20px;
    top: 200px;
    width: 200px;
    background: var(--bg-primary);
    border: 2px solid var(--primary);
    border-radius: 12px;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.teacher-plan-toolkit.hidden {
    display: none;
}

.toolkit-title {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolkit-section {
    margin-bottom: 16px;
}

.toolkit-label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.toolkit-bubbles {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.toolkit-bubbles .bubble {
    font-size: 12px;
    padding: 3px 8px;
}

.bubble.affix {
    background: #e0e7ff;
    color: #4338ca;
}

/* Timer button active state */
#tpTimerBtn.active {
    background: var(--success);
    color: white;
}

#tpTimerDisplay {
    font-family: monospace;
    margin-left: 4px;
}

/* Empty states */
.teacher-plan-empty-state {
    text-align: center;
    padding: 60px 20px;
}

.teacher-plan-empty-state i {
    font-size: 64px;
    color: var(--text-secondary);
    opacity: 0.5;
    margin-bottom: 16px;
}

.teacher-plan-empty-state h3 {
    margin-bottom: 12px;
}

.teacher-plan-empty-state p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.teacher-plan-help {
    text-align: left;
    max-width: 400px;
    margin: 0 auto;
    background: var(--bg-tertiary);
    padding: 20px;
    border-radius: 8px;
}

.teacher-plan-help ol {
    margin-left: 20px;
}

.teacher-plan-help li {
    margin-bottom: 8px;
}

/* Loading state */
.teacher-plan-loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.teacher-plan-loading i {
    font-size: 32px;
    margin-bottom: 12px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .teacher-plan-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left,
    .toolbar-center,
    .toolbar-right {
        justify-content: center;
    }

    .teacher-plan-toolkit {
        position: relative;
        right: auto;
        top: auto;
        width: 100%;
        margin-top: 16px;
    }

    .current-pattern {
        gap: 8px;
    }

    .large-bubble {
        font-size: 16px;
        padding: 8px 14px;
    }

    .large-card img {
        width: 70px;
        height: 70px;
    }
}

/* =================================================================
   CHOICE GROUP MODAL - Teacher's Plan clickable choices
   ================================================================= */
.choice-group-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease-out;
}

.choice-group-modal.hidden {
    display: none;
}

.choice-modal-content {
    background: var(--bg-primary, #fff);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    animation: slideUp 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.choice-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
    background: linear-gradient(135deg, var(--primary, #6366f1), var(--primary-dark, #4a47a3));
    color: white;
}

.choice-modal-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.choice-modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 24px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.choice-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.choice-modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: 50vh;
}

.choice-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
}

.choice-option-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    background: var(--bg-secondary, #f9fafb);
    border: 2px solid var(--border-color, #e5e7eb);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.choice-option-item:hover {
    border-color: var(--primary, #6366f1);
    background: rgba(99, 102, 241, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.choice-option-item.selected {
    border-color: var(--success, #22c55e);
    background: rgba(34, 197, 94, 0.1);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.choice-option-card {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.choice-option-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.choice-option-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary, #111827);
    text-align: center;
}

.choice-option-item.text-only {
    padding: 20px 16px;
}

.choice-option-bubble {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary, #111827);
    padding: 10px 20px;
    background: white;
    border: 2px solid var(--primary, #6366f1);
    border-radius: 20px;
}

.choice-check {
    position: absolute;
    top: 8px;
    right: 8px;
    color: var(--success, #22c55e);
    font-size: 16px;
    background: white;
    border-radius: 50%;
    padding: 2px;
}

.choice-modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color, #e5e7eb);
    display: flex;
    justify-content: center;
}

.choice-clear-btn {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Clickable choice styling - bubble mode */
.bubble.choice.clickable-choice {
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid var(--warning, #f59e0b);
}

.bubble.choice.clickable-choice:hover {
    background: rgba(245, 158, 11, 0.15);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
}

.bubble.choice.has-selection {
    border-color: var(--success, #22c55e);
    background: rgba(34, 197, 94, 0.1);
    font-weight: 700;
}

.bubble.choice.has-selection:hover {
    background: rgba(34, 197, 94, 0.2);
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.25);
}

/* Clickable choice styling - card mode */
.mini-card.clickable-choice {
    cursor: pointer;
    transition: all 0.2s;
}

.mini-card.clickable-choice:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.mini-card.has-selection {
    box-shadow: 0 0 0 3px var(--success, #22c55e), 0 4px 12px rgba(34, 197, 94, 0.3);
}

/* Pattern choice container for multiple cards */
.pattern-choice.clickable-choice {
    cursor: pointer;
    padding: 4px;
    border-radius: 8px;
    transition: background 0.2s;
}

.pattern-choice.clickable-choice:hover {
    background: rgba(245, 158, 11, 0.1);
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .choice-modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .choice-options-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .choice-option-card {
        width: 60px;
        height: 60px;
    }

    .choice-option-item {
        padding: 12px 8px;
    }
}