/* CSS Variables for Theming - CrokyLingo Green Frog Theme */
:root {
    --bg-primary: #f5f9f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #2d3a2d;
    --text-secondary: #5a6b5a;
    --border-color: #d4e5d4;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --accent-color: #7CB342;
    --accent-hover: #689F38;
    --accent-light: #AED581;
    --success-color: #4CAF50;
    --danger-color: #e57373;
    --warning-color: #FFB74D;
    --flashcard-front: linear-gradient(135deg, #8BC34A 0%, #689F38 100%);
    --flashcard-back: linear-gradient(135deg, #AED581 0%, #7CB342 100%);
    --navbar-bg: #ffffff;
    --stat-card-bg: #ffffff;
    --frog-green: #7CB342;
    --frog-green-dark: #558B2F;
    --frog-green-light: #C5E1A5;
    --tutorial-dim: rgba(0, 0, 0, 0.55);
}

[data-theme="dark"] {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-card: #252525;
    --text-primary: #e0e0e0;
    --text-secondary: #9e9e9e;
    --border-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --navbar-bg: #1e1e1e;
    --stat-card-bg: #252525;
    --accent-color: #9CCC65;
    --accent-hover: #8BC34A;
    --accent-light: #689F38;
    --frog-green: #9CCC65;
    --frog-green-dark: #7CB342;
    --frog-green-light: #C5E1A5;
    --flashcard-front: linear-gradient(135deg, #558B2F 0%, #33691E 100%);
    --flashcard-back: linear-gradient(135deg, #7CB342 0%, #558B2F 100%);
    --tutorial-dim: rgba(0, 0, 0, 0.22);
}

/* Base Styles */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    background-color: var(--navbar-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--frog-green-dark) !important;
}

.navbar-brand img {
    border-radius: 8px;
}

.navbar-brand span {
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* Stats Cards */
.stat-card {
    background: var(--stat-card-bg);
    border-radius: 12px;
    padding: 1.25rem;
    text-align: center;
    box-shadow: 0 2px 8px var(--shadow-color);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    height: 100%;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.practice-breakdown {
    display: flex;
    justify-content: center;
    gap: 0.6rem;
    font-size: 0.72rem;
    color: var(--text-secondary, #6c757d);
    margin-top: 0.3rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Tabs */
.nav-tabs {
    border-bottom: 2px solid var(--border-color);
}

.nav-tabs .nav-link {
    color: var(--text-secondary);
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    border-radius: 6px 6px 0 0;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.nav-tabs .nav-link i {
    opacity: 0.65;
    transition: opacity 0.2s ease;
}

.nav-tabs .nav-link:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    background-color: var(--bg-secondary);
}

.nav-tabs .nav-link:hover i,
.nav-tabs .nav-link.active i {
    opacity: 1;
}

.nav-tabs .nav-link:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: 6px 6px 0 0;
}

.nav-tabs .nav-link.active {
    color: var(--accent-color);
    background-color: transparent;
    border-color: transparent;
    border-bottom-color: var(--accent-color);
}

/* Vocabulary dropdown in nav tabs */
.nav-tabs .nav-item.dropdown .dropdown-toggle {
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.nav-tabs .nav-item.dropdown .dropdown-toggle.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.nav-tabs .dropdown-menu {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px var(--shadow-color);
    border-radius: 8px;
    min-width: 180px;
}

.nav-tabs .dropdown-menu .dropdown-item {
    color: var(--text-primary);
    padding: 0.5rem 1rem;
}

.nav-tabs .dropdown-menu .dropdown-item:hover {
    background-color: var(--bg-primary);
    color: var(--accent-color);
}

.nav-tabs .dropdown-menu .dropdown-item i {
    color: var(--text-secondary);
}

/* Main Tab Bar — pill tray (scoped to #mainTabs, other nav-tabs unaffected) */
#mainTabs {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 5px 6px;
    gap: 3px;
    box-shadow: 0 1px 6px var(--shadow-color);
}

#mainTabs .nav-link {
    border-radius: 8px !important;
    border-bottom: none !important;
    margin-bottom: 0 !important;
    padding: 0.45rem 0.9rem;
    font-weight: 500;
}

#mainTabs .nav-link:hover {
    background-color: var(--bg-primary);
    border-bottom-color: transparent !important;
}

#mainTabs .nav-link.active {
    background-color: var(--accent-color) !important;
    color: #fff !important;
    border-color: transparent !important;
    box-shadow: 0 2px 8px var(--shadow-color);
}

#mainTabs .nav-item.dropdown .dropdown-toggle {
    border-bottom: none !important;
    margin-bottom: 0 !important;
}

#mainTabs .nav-item.dropdown .dropdown-toggle.active {
    background-color: var(--accent-color) !important;
    color: #fff !important;
    border-bottom-color: transparent !important;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 2px 8px var(--shadow-color);
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
}

/* Forms */
.form-control, .form-select {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.2rem rgba(124, 179, 66, 0.25);
}

.form-control::placeholder {
    color: var(--text-secondary);
}

.input-group-text {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

/* Mixed Mode Toggle */
.form-switch {
    padding-left: 2.5em;
}

.form-check-label {
    margin-left: 0.4em;
}

.form-switch .form-check-input {
    width: 2.5em;
    height: 1.25em;
    cursor: pointer;
    background-color: var(--border-color);
    border: none;
}

.form-switch .form-check-input:checked {
    background-color: var(--accent-color);
}

.form-switch .form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(124, 179, 66, 0.25);
}

.form-select:disabled {
    background-color: var(--bg-primary);
    opacity: 0.6;
    cursor: not-allowed;
}

/* Flashcard Container */
.flashcard-container {
    max-width: 500px;
    margin: 0 auto;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

/* Progress Indicator */
.progress-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.mastery-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.mastery-badge i {
    color: #FFB74D;
}

/* Flashcard */
.flashcard {
    perspective: 1000px;
    height: 300px;
    cursor: pointer;
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

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

.flashcard-front, .flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.flashcard-front {
    background: var(--flashcard-front);
    color: white;
}

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

.flashcard-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.flashcard-word {
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    word-break: break-word;
    max-width: 100%;
}

.flashcard-hint {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 1rem;
}

/* Quiz Mode */
.flashcard.quiz-mode .flashcard-hint {
    display: none;
}

.flashcard.quiz-mode.answer-hidden .flashcard-inner {
    pointer-events: none;
}

/* Flashcard Action Bar */
.flashcard-action-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    animation: fadeIn 0.3s ease;
    transition: opacity 0.3s ease;
}

.flashcard-action-bar.hidden {
    opacity: 0;
    pointer-events: none;
}

.flashcard-action-bar .btn {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.15s ease, box-shadow 0.15s ease,
                background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.flashcard-action-bar .btn:hover {
    transform: scale(1.05);
}

.flashcard-action-bar .btn:active {
    transform: scale(0.97);
}


/* Table */
.table {
    color: var(--text-primary);
}

.table th {
    border-bottom-color: var(--border-color);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.table td {
    border-bottom-color: var(--border-color);
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background-color: var(--bg-primary);
}

/* Action Buttons */
.btn-action {
    padding: 0.375rem 0.5rem;
    border-radius: 6px;
}

@media (max-width: 576px) {
    #wordsList td:last-child {
        white-space: nowrap;
    }

    #wordsList .btn-action {
        padding: 0.15rem 0.25rem;
        font-size: 0.75rem;
    }
}

/* Sortable Table Headers */
.sortable {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s ease;
}

.sortable:hover {
    background-color: var(--bg-primary);
}

.sortable .sort-icon {
    opacity: 0.3;
    font-size: 0.7rem;
    margin-left: 4px;
    transition: opacity 0.2s ease;
}

.sortable:hover .sort-icon {
    opacity: 0.6;
}

.sortable.sort-asc .sort-icon,
.sortable.sort-desc .sort-icon {
    opacity: 1;
    color: var(--accent-color);
}

.sortable.sort-asc .sort-icon::before {
    content: "\F282"; /* bi-chevron-up */
}

.sortable.sort-desc .sort-icon::before {
    content: "\F285"; /* bi-chevron-down */
}

/* Pagination */
.pagination .page-link {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.pagination .page-link:hover {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--accent-color);
}

.pagination .page-item.active .page-link {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.pagination .page-item.disabled .page-link {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-secondary);
    opacity: 0.5;
}

/* Card Footer */
.card-footer {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
}

/* Table Light Header in Dark Mode */
[data-theme="dark"] .table-light {
    background-color: var(--bg-secondary) !important;
}

[data-theme="dark"] .table-light th {
    background-color: var(--bg-secondary) !important;
    color: var(--text-secondary) !important;
}

/* Date Column */
.date-cell {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Toast */
.toast {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
}

.toast-header {
    background-color: var(--bg-card);
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

.toast-body {
    color: var(--text-primary);
}

/* Modal */
.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
}

.modal-header {
    border-bottom-color: var(--border-color);
}

.modal-footer {
    border-top-color: var(--border-color);
}

.modal-title {
    color: var(--text-primary);
}

/* Buttons - Green Theme */
.btn-primary {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-primary:active {
    background-color: var(--frog-green-dark);
    border-color: var(--frog-green-dark);
}

.btn-outline-primary {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.btn-outline-primary:hover, .btn-outline-primary:focus {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.btn-outline-primary.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

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

.btn-success:hover {
    background-color: #43A047;
    border-color: #43A047;
}

.btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-danger:hover {
    background-color: #ef5350;
    border-color: #ef5350;
}

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

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

.btn-outline-info {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.btn-outline-info:hover {
    background-color: var(--accent-light);
    border-color: var(--accent-color);
    color: var(--frog-green-dark);
}

.btn-outline-warning {
    color: #F57C00;
    border-color: #FFB74D;
}

.btn-outline-warning:hover {
    background-color: #FFB74D;
    border-color: #FFB74D;
    color: #212121;
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .flashcard-word {
        font-size: 1.75rem;
    }

    .flashcard {
        height: 250px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .flashcard-action-bar {
        gap: 0.5rem;
    }

    .flashcard-action-bar .btn {
        min-width: 44px;
        min-height: 44px;
        padding: 0.375rem 0.5rem;
    }
}

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

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* Loading state */
.loading {
    pointer-events: none;
    opacity: 0.6;
}

.btn.loading::after {
    content: '';
    display: inline-block;
    width: 1rem;
    height: 1rem;
    margin-left: 0.5rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

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

/* Alert styles */
.alert {
    border-radius: 12px;
}

.alert-info {
    background-color: rgba(124, 179, 66, 0.1);
    border-color: var(--accent-light);
    color: var(--frog-green-dark);
}

.alert-info .btn-close {
    filter: brightness(0.5) sepia(1) hue-rotate(70deg);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* Exercise Styles */
.exercise-row {
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.exercise-row:hover {
    border-color: var(--accent-light);
}

.exercise-source-word {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.exercise-answer {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.exercise-answer.is-valid {
    border-color: var(--success-color) !important;
    background-color: rgba(76, 175, 80, 0.05);
}

.exercise-answer.is-invalid {
    border-color: var(--danger-color) !important;
    background-color: rgba(229, 115, 115, 0.05);
}

.exercise-result {
    background: transparent;
    border: none;
    padding: 0 0.5rem;
}

/* Correct Answer Feedback */
.correct-answer-feedback {
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(229, 115, 115, 0.1);
    border-radius: 6px;
    color: var(--danger-color);
    font-size: 0.9rem;
    border-left: 3px solid var(--danger-color);
}

.correct-answer-feedback strong {
    color: var(--danger-color);
}

#exerciseResults .display-4 {
    font-size: 4rem;
}

#resultsDetails .list-group-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Dark mode adjustments for exercise */
[data-theme="dark"] .exercise-row {
    background: var(--bg-card);
}

[data-theme="dark"] .exercise-answer.is-valid {
    background-color: rgba(76, 175, 80, 0.1);
}

[data-theme="dark"] .exercise-answer.is-invalid {
    background-color: rgba(229, 115, 115, 0.1);
}

/* ========================================
   HOME TAB - Hero Section
   ======================================== */
.hero-section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 16px var(--shadow-color);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: var(--accent-light);
    opacity: 0.1;
    border-radius: 50%;
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.hero-section p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Mascot placeholder */
.mascot-container {
    text-align: center;
}

.mascot-placeholder {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 4rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* Frog Logo – mouth blinks on all devices; hover/tap opens fully */
.frog-logo {
    cursor: pointer;
}

.frog-logo .frog-mouth-open {
    opacity: 0;
    animation: frogMouthOpenBlink 2s ease-in-out infinite;
}

.frog-logo .frog-mouth-closed {
    animation: frogMouthClosedBlink 2s ease-in-out infinite;
}

/* Hover (desktop) or tap (JS) overrides animation and opens fully */
.frog-logo:hover .frog-mouth-open,
.frog-logo.frog-talking .frog-mouth-open {
    animation: none;
    opacity: 1;
}

.frog-logo:hover .frog-mouth-closed,
.frog-logo.frog-talking .frog-mouth-closed {
    animation: none;
    opacity: 0;
}

/* KPI Stat Cards for Home */
.kpi-card {
    background: var(--stat-card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 8px var(--shadow-color);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    height: 100%;
}

.kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px var(--shadow-color);
}

.kpi-card .kpi-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--accent-color);
}

.kpi-card .kpi-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.kpi-card .kpi-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.25rem;
}

/* CEFR Progress Card */
.cefr-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.cefr-level-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-right: 1rem;
}

.cefr-level-badge.level-a1 { background: linear-gradient(135deg, #81C784, #4CAF50); }
.cefr-level-badge.level-a2 { background: linear-gradient(135deg, #AED581, #8BC34A); }
.cefr-level-badge.level-b1 { background: linear-gradient(135deg, #FFD54F, #FFC107); }
.cefr-level-badge.level-b2 { background: linear-gradient(135deg, #FFB74D, #FF9800); }
.cefr-level-badge.level-c1 { background: linear-gradient(135deg, #FF8A65, #FF5722); }
.cefr-level-badge.level-c2 { background: linear-gradient(135deg, #E57373, #F44336); }

.cefr-progress {
    height: 12px;
    border-radius: 6px;
    background: var(--bg-primary);
    overflow: hidden;
}

.cefr-progress .progress-bar {
    background: linear-gradient(90deg, var(--accent-color), var(--frog-green-dark));
    border-radius: 6px;
    transition: width 0.6s ease;
}

/* Quick Action Buttons */
.quick-action-btn {
    padding: 1.25rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    transition: all 0.2s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.quick-action-btn:hover {
    border-color: var(--accent-color);
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
}

.quick-action-btn i {
    font-size: 1.75rem;
}

/* Word of the Day Card */
.word-of-day-card {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    border: 2px solid var(--accent-light);
    box-shadow: 0 4px 16px var(--shadow-color);
    max-width: 500px;
    margin: 0 auto;
}

.word-of-day-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.word-of-day-label i {
    color: #FFD700;
    margin-right: 0.25rem;
}

.word-of-day-italian {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    font-style: italic;
}

.word-of-day-english {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.word-of-day-actions {
    display: flex;
    gap: 0.5rem;
}

.word-of-day-actions .btn {
    width: 44px;
    height: 44px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

/* ========================================
   STREAK CARD
   ======================================== */
.streak-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.streak-frog {
    position: relative;
    flex-shrink: 0;
}

.streak-frog-img {
    border-radius: 50%;
}

/* ========================================
   INSIGHTS TAB
   ======================================== */

#insightsContent .card {
    border: none;
    box-shadow: 0 2px 8px var(--shadow-color);
}

#insightsContent .card-header {
    background: var(--bg-card);
    font-weight: 600;
    border-bottom: 2px solid var(--accent-color);
}

#insightsTrendCanvas {
    border-radius: 8px;
}

#insightsContent .table th {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.streak-label {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

.streak-badge {
    font-size: 1.1rem;
    font-weight: 700;
    padding: 0.25em 0.6em;
}

.streak-longest {
    font-size: 0.8rem;
    margin-top: 0.15rem;
}

/* ========================================
   STORYTELLER TAB
   ======================================== */
.story-container {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 16px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.story-text {
    font-size: 1.2rem;
    line-height: 2;
    color: var(--text-primary);
    font-family: 'Georgia', serif;
}

.story-text .vocab-word {
    background: linear-gradient(135deg, var(--accent-light), var(--frog-green-light));
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
    color: var(--frog-green-dark);
    cursor: pointer;
    transition: all 0.2s ease;
}

.story-text .vocab-word:hover {
    background: var(--accent-color);
    color: white;
}

/* Pre-loaded story word highlighting */
.story-known-word {
    color: var(--frog-green-dark);
    font-weight: 600;
    border-bottom: 2px solid var(--accent-color);
    cursor: help;
    transition: color 0.15s ease;
}

.story-known-word:hover {
    color: var(--accent-hover);
}

.story-word {
    border-bottom: 1px dotted var(--text-secondary);
    cursor: help;
}

/* ── Conversation mode ──────────────────────────────────────────── */

/* Dialog container: stack bubbles as a flex column */
#convDialogContainer {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Word spans injected by buildWordSpans() for onboundary highlighting */
.conv-word {
    display: inline;
    border-radius: 3px;
    transition: background-color 0.08s ease-out;
}

.conv-word.conv-highlight {
    background-color: #ffc107;
    color: #000;
    padding: 0 2px;
}

[data-theme="dark"] .conv-word.conv-highlight {
    background-color: #e0a800;
    color: #000;
}

/* Shared bubble base */
.conv-turn {
    max-width: 82%;
    padding: 0.55rem 0.85rem;
    border-radius: 1rem;
}

/* Frog / CrokyBot bubble — left-aligned, green tint */
.conv-frog-turn {
    align-self: flex-start;
    background-color: rgba(124, 179, 66, 0.12);
    border: 1px solid var(--frog-green-light);
    border-bottom-left-radius: 0.25rem;
}

/* User bubble — right-aligned, blue tint */
.conv-user-turn {
    align-self: flex-end;
    background-color: rgba(13, 110, 253, 0.07);
    border: 1px solid rgba(13, 110, 253, 0.18);
    border-bottom-right-radius: 0.25rem;
}

[data-theme="dark"] .conv-frog-turn {
    background-color: rgba(124, 179, 66, 0.16);
    border-color: var(--frog-green-dark);
}

[data-theme="dark"] .conv-user-turn {
    background-color: rgba(13, 110, 253, 0.12);
    border-color: rgba(13, 110, 253, 0.28);
}

/* Speaker label inside a turn */
.conv-speaker-label {
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* Action buttons row (Repeat / Play) */
.conv-turn-actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.conv-repeat-btn,
.conv-play-btn,
.conv-skip-btn {
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    line-height: 1.4;
}

/* Translation reveal */
.conv-turn-translation {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 0.35rem;
    padding-top: 0.2rem;
    border-top: 1px dashed var(--border-color);
    line-height: 1.4;
}

.conv-meaning-btn {
    font-size: 0.72rem;
    text-decoration: none;
    opacity: 0.65;
    vertical-align: middle;
    align-self: center;
}

.conv-meaning-btn:hover {
    opacity: 1;
}

/* ── End conversation mode ──────────────────────────────────────── */

[data-theme="dark"] .story-known-word {
    color: var(--frog-green);
    border-bottom-color: var(--frog-green);
}

.story-translation {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    font-style: italic;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border-left: 4px solid var(--accent-color);
}

/* Story Controls */
.story-controls {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.story-controls .btn {
    flex: 1;
    min-width: 120px;
}

/* Comprehension Questions */
.comprehension-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.comprehension-question {
    background: var(--bg-card);
    border-radius: 10px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

.comprehension-question .question-text {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.comprehension-question .form-check {
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    margin: 0.5rem 0;
    background: var(--bg-secondary);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.comprehension-question .form-check:hover {
    background: var(--accent-light);
}

.comprehension-question .form-check-input:checked ~ .form-check-label {
    font-weight: 600;
    color: var(--accent-color);
}

/* Story Exercises */
.story-exercises {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.exercise-type-section {
    margin-bottom: 2rem;
}

.exercise-type-section h5 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-light);
}

/* Fill in the blank */
.fill-blank-item {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 0.75rem;
}

.fill-blank-item .sentence {
    font-size: 1.05rem;
    color: var(--text-primary);
}

.fill-blank-item .blank {
    display: inline-block;
    min-width: 100px;
    border-bottom: 2px dashed var(--accent-color);
    margin: 0 4px;
    text-align: center;
}

.fill-blank-item input {
    width: 120px;
    display: inline-block;
    text-align: center;
    border-radius: 6px;
}

/* Translation exercise */
.translation-item {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 0.75rem;
}

.translation-item .source-text {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

/* Matching exercise */
.matching-exercise {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

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

.matching-item {
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.matching-item:hover {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

.matching-item.selected {
    border-color: var(--accent-color);
    background: var(--accent-color);
    color: white;
}

.matching-item.matched {
    border-color: var(--success-color);
    background: rgba(76, 175, 80, 0.1);
    pointer-events: none;
}

/* ========================================
   QUIZ MODE - Multiple Choice
   ======================================== */
.quiz-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 1rem;
}

.quiz-option-btn {
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
    text-align: center;
}

.quiz-option-btn:hover {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

.quiz-option-btn.correct {
    border-color: var(--success-color);
    background: rgba(76, 175, 80, 0.15);
    color: var(--success-color);
}

.quiz-option-btn.incorrect {
    border-color: var(--danger-color);
    background: rgba(229, 115, 115, 0.15);
    color: var(--danger-color);
    animation: shake 0.5s ease-in-out;
}

.quiz-option-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

/* Session Score Display */
.session-score {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.session-score .score-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.session-score .score-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* ========================================
   ADD WORDS - Parse Preview & Suggestions
   ======================================== */
.parse-preview-table {
    font-size: 0.9rem;
}

.parse-preview-table th {
    background: var(--bg-secondary);
    font-weight: 600;
}

.parse-preview-table .duplicate-row {
    background: rgba(255, 183, 77, 0.1);
    color: var(--warning-color);
}

.parse-preview-table .duplicate-row td {
    text-decoration: line-through;
    opacity: 0.7;
}

/* Suggested Words Card */
.suggested-words-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.suggested-words-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}


.suggested-word-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.suggested-word-chip:hover {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

.suggested-word-chip .italian {
    font-weight: 600;
    color: var(--text-primary);
}

.suggested-word-chip .english {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.suggested-word-chip .remove-btn {
    padding: 0;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1;
}

.suggested-word-chip .remove-btn:hover {
    color: var(--danger-color);
}

/* Word Category Pills */
.word-category-pill {
    font-size: 0.8rem;
    border-radius: 20px;
    padding: 0.3rem 0.75rem;
    transition: all 0.15s ease;
}

.word-category-pill.active {
    background-color: var(--accent-color) !important;
    border-color: var(--accent-color) !important;
    color: #fff !important;
}

.word-category-pill:not(.active):hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* ========================================
   WORD LIST - Infinite Scroll & User Edited Badge
   ======================================== */
.infinite-scroll-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.infinite-scroll-spinner .spinner-border {
    color: var(--accent-color);
}

.load-more-sentinel {
    height: 1px;
    visibility: hidden;
}

/* User Edited Badge */
.user-edited-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: rgba(124, 179, 66, 0.15);
    color: var(--accent-color);
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.user-edited-badge i {
    font-size: 0.65rem;
}

/* Table Action Buttons */
.table .btn-group-sm .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

/* ========================================
   MASTERY SLIDER (Edit Modal)
   ======================================== */
.mastery-slider-container {
    padding: 1rem 0;
}

.mastery-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(90deg,
        var(--danger-color) 0%,
        var(--warning-color) 50%,
        var(--success-color) 100%
    );
    outline: none;
}

.mastery-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--accent-color);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    transition: all 0.2s ease;
}

.mastery-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.mastery-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--accent-color);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.mastery-value-display {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    text-align: center;
    margin-top: 0.5rem;
}

/* ========================================
   ADVERTISEMENT PLACEHOLDER
   ======================================== */
.ad-placeholder {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .ad-placeholder {
    background: var(--bg-card);
}

/* ========================================
   SHAKE ANIMATION (Wrong Answers)
   ======================================== */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* ========================================
   API STATUS INDICATOR
   ======================================== */
.api-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

.api-status.enabled {
    background: rgba(76, 175, 80, 0.15);
    color: var(--success-color);
}

.api-status.disabled {
    background: rgba(229, 115, 115, 0.15);
    color: var(--danger-color);
}

.api-status .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

/* ========================================
   OVERWRITE CONFIRMATION MODAL
   ======================================== */
.overwrite-warning {
    background: rgba(255, 183, 77, 0.1);
    border: 1px solid var(--warning-color);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.overwrite-warning i {
    color: var(--warning-color);
    font-size: 1.5rem;
}

/* ========================================
   RESPONSIVE ADJUSTMENTS
   ======================================== */
@media (max-width: 992px) {
    .hero-section {
        padding: 2rem 1.5rem;
    }

    .hero-section h1 {
        font-size: 2rem;
    }

    .mascot-placeholder {
        width: 100px;
        height: 100px;
        font-size: 3rem;
    }

    .quiz-options {
        grid-template-columns: 1fr;
    }

    .matching-exercise {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* Hero Section */
    .hero-section {
        padding: 1.5rem;
        text-align: center;
    }

    .hero-section h1 {
        font-size: 1.75rem;
    }

    .mascot-container {
        margin-top: 1rem;
    }

    .mascot-placeholder {
        width: 80px;
        height: 80px;
        font-size: 2.5rem;
    }

    /* Word of the Day */
    .word-of-day-card {
        padding: 1rem 1.25rem;
    }

    .word-of-day-italian {
        font-size: 1.5rem;
    }

    .word-of-day-english {
        font-size: 1rem;
    }

    .word-of-day-actions .btn {
        width: 40px;
        height: 40px;
    }

    /* KPI Cards */
    .kpi-card {
        padding: 1rem;
    }

    .kpi-card .kpi-value {
        font-size: 1.75rem;
    }

    /* Quick Actions */
    .quick-action-btn {
        padding: 1rem;
    }

    .quick-action-btn i {
        font-size: 1.5rem;
    }

    /* Story */
    .story-container {
        padding: 1.25rem;
    }

    .story-text {
        font-size: 1.05rem;
        line-height: 1.8;
    }

    .story-controls {
        flex-direction: column;
    }

    .story-controls .btn {
        width: 100%;
    }

    /* Quiz Options */
    .quiz-option-btn {
        padding: 0.875rem 1rem;
        font-size: 0.9rem;
    }

    /* Tables - hide less important columns */
    .table .hide-mobile {
        display: none !important;
    }

    .table td, .table th {
        padding: 0.5rem;
        font-size: 0.85rem;
    }

    /* Action Buttons - larger touch targets */
    .table .btn-sm {
        padding: 0.5rem 0.75rem;
        min-width: 44px;
        min-height: 44px;
    }

    /* CEFR Card */
    .cefr-level-badge {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }

    /* Suggested Words */
    .suggested-word-chip {
        padding: 0.625rem 1rem;
    }

    /* Session Score */
    .session-score {
        padding: 0.5rem 1rem;
        flex-wrap: wrap;
    }
}

@media (max-width: 576px) {
    /* Extra small screens */
    .hero-section h1 {
        font-size: 1.5rem;
    }

    .hero-section p {
        font-size: 1rem;
    }

    .kpi-card .kpi-value {
        font-size: 1.5rem;
    }

    .kpi-card .kpi-label {
        font-size: 0.75rem;
    }

    /* Flashcard smaller on mobile */
    .flashcard {
        height: 220px;
    }

    .flashcard-word {
        font-size: 1.5rem;
    }

    /* Action bar: full width, compact on tiny screens */
    .flashcard-action-bar {
        width: 100%;
        gap: 0.375rem;
    }

    .flashcard-action-bar .btn {
        flex: 1;
        min-width: 0;
    }

    /* Tabs scroll horizontally */
    .nav-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .nav-tabs::-webkit-scrollbar {
        display: none;
    }

    .nav-tabs .nav-link {
        white-space: nowrap;
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }

    #mainTabs {
        border-radius: 10px;
        padding: 4px;
        gap: 2px;
    }

    #mainTabs .nav-link {
        padding: 0.38rem 0.65rem;
        font-size: 0.85rem;
    }

    /* Story translation */
    .story-translation {
        padding: 1rem;
        font-size: 1rem;
    }
}

/* ========================================
   SHUFFLE MODE RADIO BUTTONS
   ======================================== */
.shuffle-mode-options {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.shuffle-mode-options .btn-check:checked + .btn-outline-primary {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

/* ========================================
   NOTES FIELD STYLING
   ======================================== */
.notes-preview {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 0.25rem;
}

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

/* ========================================
   EMPTY STATES
   ======================================== */
.empty-state-icon {
    font-size: 4rem;
    color: var(--text-secondary);
    opacity: 0.5;
    margin-bottom: 1rem;
}

.empty-state-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ========================================
   DARK MODE SPECIFIC ADJUSTMENTS
   ======================================== */
[data-theme="dark"] .hero-section {
    background: var(--bg-card);
}

[data-theme="dark"] .story-text .vocab-word {
    background: linear-gradient(135deg, var(--frog-green-dark), var(--accent-color));
    color: white;
}

[data-theme="dark"] .story-text .vocab-word:hover {
    background: var(--accent-light);
    color: var(--frog-green-dark);
}

[data-theme="dark"] .quiz-option-btn {
    background: var(--bg-secondary);
}

[data-theme="dark"] .quiz-option-btn:hover {
    background: var(--bg-card);
}

[data-theme="dark"] .suggested-word-chip {
    background: var(--bg-card);
}

[data-theme="dark"] .suggested-word-chip:hover {
    background: var(--bg-secondary);
}

[data-theme="dark"] .fill-blank-item,
[data-theme="dark"] .translation-item,
[data-theme="dark"] .matching-item {
    background: var(--bg-card);
}

[data-theme="dark"] .comprehension-question .form-check:hover {
    background: var(--bg-card);
}

[data-theme="dark"] .quick-action-btn {
    background: var(--bg-secondary);
}

[data-theme="dark"] .quick-action-btn:hover {
    background: var(--accent-color);
}

[data-theme="dark"] .word-of-day-card {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-color: var(--frog-green-dark);
}

/* ── Dark mode: Bootstrap component overrides ──────────────────────────── */

/* Global text color override — Bootstrap hardcodes #212529 on many elements */
[data-theme="dark"] {
    color: var(--text-primary);
}

[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3,
[data-theme="dark"] h4, [data-theme="dark"] h5, [data-theme="dark"] h6,
[data-theme="dark"] .h1, [data-theme="dark"] .h2, [data-theme="dark"] .h3,
[data-theme="dark"] .h4, [data-theme="dark"] .h5, [data-theme="dark"] .h6 {
    color: var(--text-primary);
}

[data-theme="dark"] p,
[data-theme="dark"] label,
[data-theme="dark"] small,
[data-theme="dark"] .small,
[data-theme="dark"] .lead,
[data-theme="dark"] .form-label,
[data-theme="dark"] .form-text,
[data-theme="dark"] .form-check-label,
[data-theme="dark"] .card-body,
[data-theme="dark"] .card-header,
[data-theme="dark"] .card-title,
[data-theme="dark"] .card-text,
[data-theme="dark"] .accordion-body {
    color: var(--text-primary);
}

[data-theme="dark"] code {
    color: var(--accent-color);
    background-color: rgba(156, 204, 101, 0.1);
}

/* Inputs: placeholder text */
[data-theme="dark"] .form-control::placeholder {
    color: #757575;
}

/* Bootstrap .fw-bold, .fw-medium inherits color — already covered by parent */
/* Bootstrap .display-* headings */
[data-theme="dark"] .display-1, [data-theme="dark"] .display-2,
[data-theme="dark"] .display-3, [data-theme="dark"] .display-4,
[data-theme="dark"] .display-5, [data-theme="dark"] .display-6 {
    color: var(--text-primary);
}

/* .close / .btn-close for modals, alerts, toasts */
[data-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Body text & links */
[data-theme="dark"] .text-muted {
    color: var(--text-secondary) !important;
}

[data-theme="dark"] a:not(.btn):not(.nav-link):not(.dropdown-item) {
    color: var(--accent-color);
}

/* Badges */
[data-theme="dark"] .badge.bg-light {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .badge.bg-secondary {
    background-color: #424242 !important;
}

/* Buttons: ensure readable text on dark bg */
[data-theme="dark"] .btn-outline-secondary {
    color: var(--text-primary);
    border-color: #555;
}

[data-theme="dark"] .btn-outline-secondary:hover {
    background-color: #424242;
    color: #f8f9fa;
    border-color: #666;
}

[data-theme="dark"] .btn-light {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-light:hover {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

/* Tables */
[data-theme="dark"] .table {
    --bs-table-bg: transparent;
    --bs-table-striped-bg: rgba(255, 255, 255, 0.03);
    --bs-table-hover-bg: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .table > :not(caption) > * > * {
    border-bottom-color: var(--border-color);
    background-color: transparent;
    color: var(--text-primary);
}

[data-theme="dark"] .table-danger {
    --bs-table-bg: rgba(229, 115, 115, 0.12);
    color: #f8a0a0;
}

[data-theme="dark"] .table-info {
    --bs-table-bg: rgba(100, 181, 246, 0.12);
    color: #90caf9;
}

/* Modals */
[data-theme="dark"] .modal-content {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-header {
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-header .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

[data-theme="dark"] .modal-footer {
    border-top-color: var(--border-color);
}

/* Toasts */
[data-theme="dark"] .toast {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .toast-header {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .toast-header .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Progress bars */
[data-theme="dark"] .progress {
    background-color: var(--bg-secondary);
}

/* Forms: input, select, textarea */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:disabled,
[data-theme="dark"] .form-control[readonly] {
    background-color: #1a1a1a;
    color: var(--text-secondary);
}

[data-theme="dark"] .form-label {
    color: var(--text-primary);
}

/* Accordion close button dark fix */
[data-theme="dark"] .accordion-button .btn-close {
    filter: invert(1);
}

/* List groups */
[data-theme="dark"] .list-group-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Alerts */
[data-theme="dark"] .alert-info {
    background-color: rgba(156, 204, 101, 0.12);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

[data-theme="dark"] .alert-danger {
    background-color: rgba(229, 115, 115, 0.12);
    border-color: var(--danger-color);
    color: #f8a0a0;
}

[data-theme="dark"] .alert-warning {
    background-color: rgba(255, 183, 77, 0.12);
    border-color: var(--warning-color);
    color: #ffd666;
}

[data-theme="dark"] .alert-success {
    background-color: rgba(156, 204, 101, 0.12);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* Cards with .bg-white or .bg-body */
[data-theme="dark"] .bg-white,
[data-theme="dark"] .bg-body {
    background-color: var(--bg-card) !important;
}

/* Dropdown menus */
[data-theme="dark"] .dropdown-menu {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
}

[data-theme="dark"] .dropdown-divider {
    border-color: var(--border-color);
}

/* ========================================
   CEFR Level Badges
   ======================================== */
.bg-purple {
    background-color: #9C27B0 !important;
    color: white !important;
}

/* ========================================
   ONBOARDING TUTORIAL STYLES
   ======================================== */

/* Tutorial Overlay - Semi-transparent background */
.tutorial-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--tutorial-dim);
    z-index: 1050;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.tutorial-overlay.d-none {
    opacity: 0;
}

/* Highlight box that shows around current element */
.tutorial-highlight-box {
    position: absolute;
    border: 3px solid var(--accent-color);
    border-radius: 12px;
    box-shadow: 0 0 0 9999px var(--tutorial-dim),
                0 0 30px rgba(124, 179, 66, 0.5);
    pointer-events: none;
    transition: all 0.4s ease;
    z-index: 1051;
}

/* Glowing pulse animation for highlighted element */
@keyframes tutorialPulse {
    0%, 100% {
        box-shadow: 0 0 0 9999px var(--tutorial-dim),
                    0 0 20px rgba(124, 179, 66, 0.4);
    }
    50% {
        box-shadow: 0 0 0 9999px var(--tutorial-dim),
                    0 0 40px rgba(124, 179, 66, 0.8);
    }
}

.tutorial-highlight-box.pulse {
    animation: tutorialPulse 2s ease-in-out infinite;
}

/* Tutorial Floating Panel */
.tutorial-panel {
    position: fixed;
    z-index: 1060;
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    padding: 1.25rem;
    max-width: 360px;
    width: calc(100vw - 2rem);
    border: 2px solid var(--accent-color);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.tutorial-panel.d-none {
    opacity: 0;
    transform: translateY(10px);
}

/* Arrow pointer for tutorial panel */
.tutorial-panel-arrow {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--bg-card);
    border: 2px solid var(--accent-color);
    border-right: none;
    border-bottom: none;
    transform: rotate(45deg);
    top: -10px;
    left: 30px;
}

.tutorial-panel-arrow.arrow-bottom {
    top: auto;
    bottom: -10px;
    transform: rotate(225deg);
}

.tutorial-panel-arrow.arrow-left {
    left: -10px;
    top: 20px;
    transform: rotate(-45deg);
}

.tutorial-panel-arrow.arrow-right {
    left: auto;
    right: -10px;
    top: 20px;
    transform: rotate(135deg);
}

/* Tutorial Panel Content */
.tutorial-panel-content {
    position: relative;
}

.tutorial-step-indicator {
    color: var(--text-secondary);
}

.tutorial-step-title {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.tutorial-step-description {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.tutorial-panel-actions {
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
    margin-top: 0.75rem;
}

.tutorial-panel-actions .btn {
    font-size: 0.85rem;
}

/* Tab highlight during tutorial */
.tutorial-tab-highlight {
    position: relative;
}

.tutorial-tab-highlight::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-color);
    animation: tutorialTabGlow 1.5s ease-in-out infinite;
}

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

/* Tutorial Welcome Modal Styling */
#tutorialWelcomeModal .modal-body img {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

#tutorialWelcomeModal .modal-header {
    border-bottom: none;
}

#tutorialWelcomeModal .modal-footer {
    border-top: none;
    padding-top: 0;
}

/* Tutorial Progress Dots (optional visual enhancement) */
.tutorial-progress-dots {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-bottom: 0.75rem;
}

.tutorial-progress-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
    transition: all 0.3s ease;
}

.tutorial-progress-dot.active {
    background: var(--accent-color);
    transform: scale(1.25);
}

.tutorial-progress-dot.completed {
    background: var(--success-color);
}

/* Responsive adjustments for tutorial */
@media (max-width: 768px) {
    .tutorial-panel {
        max-width: calc(100vw - 1rem);
        left: 0.5rem !important;
        right: 0.5rem !important;
        bottom: 1rem !important;
        top: auto !important;
    }

    .tutorial-panel-arrow {
        display: none;
    }

    .tutorial-step-title {
        font-size: 1rem;
    }

    .tutorial-step-description {
        font-size: 0.9rem;
    }

    .tutorial-panel-actions {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .tutorial-panel-actions .btn {
        flex: 1;
        min-width: 80px;
    }

    #tutorialSkipBtn {
        order: 3;
        width: 100%;
        margin-top: 0.25rem;
    }
}

/* Dark mode adjustments for tutorial */
[data-theme="dark"] .tutorial-highlight-box {
    border-color: var(--accent-light);
}

[data-theme="dark"] .tutorial-panel {
    background: #303030;
    border-color: var(--accent-light);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .tutorial-panel-arrow {
    background: #303030;
    border-color: var(--accent-light);
}

/* ========================================
   GRAMMAR SECTION
   ======================================== */

/* Grammar Accordion */
.accordion-item {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

.accordion-button {
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-weight: 600;
}

.accordion-button:not(.collapsed) {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.2rem rgba(124, 179, 66, 0.25);
    border-color: var(--accent-color);
}

.accordion-button::after {
    filter: var(--accordion-arrow-filter, none);
}

[data-theme="dark"] .accordion-button::after {
    filter: invert(1);
}

.accordion-body {
    background-color: var(--bg-card);
}

/* Grammar Locked Level (CEFR gating) */
.grammar-locked-level .accordion-button {
    opacity: 0.6;
}

.grammar-locked-row {
    opacity: 0.45;
}

.grammar-locked-row .btn.disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.grammar-locked-check {
    opacity: 0.45;
}

/* Grammar Exercise Sub-tabs */
#exerciseSubTabs .nav-link {
    color: var(--text-secondary);
    border-radius: 20px;
    padding: 0.5rem 1.25rem;
    transition: all 0.2s ease;
}

#exerciseSubTabs .nav-link:hover {
    color: var(--accent-color);
    background-color: var(--bg-secondary);
}

#exerciseSubTabs .nav-link.active {
    background-color: var(--accent-color);
    color: white;
}

/* Grammar Multiple Choice Options */
.grammar-mc-option {
    padding: 0.75rem 1rem;
    border-radius: 10px;
    transition: all 0.2s ease;
    text-align: left;
}

.grammar-mc-option:hover {
    border-color: var(--accent-color);
    background-color: var(--bg-secondary);
}

.grammar-mc-option.active {
    border-color: var(--accent-color);
    background-color: var(--accent-color);
    color: white;
}

/* Grammar Learn Modal Tables */
#grammarLearnModalBody .table {
    font-size: 0.9rem;
}

#grammarLearnModalBody .table th {
    background-color: var(--bg-secondary);
}

#grammarLearnModalBody .list-group-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

/* Dark mode grammar adjustments */
[data-theme="dark"] .accordion-item {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .accordion-button {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

[data-theme="dark"] .accordion-button:not(.collapsed) {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
}

[data-theme="dark"] .grammar-mc-option {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .grammar-mc-option:hover {
    background-color: var(--bg-card);
    border-color: var(--accent-color);
}

[data-theme="dark"] .grammar-mc-option.active {
    background-color: var(--accent-color);
    color: white;
}

/* Grammar Conjugation Feedback Table */
#grammarFeedbackArea .table,
#grammarResultsDetails .table {
    font-size: 0.85rem;
    border-radius: 6px;
    overflow: hidden;
}

#grammarFeedbackArea .table th,
#grammarResultsDetails .table th {
    background-color: var(--bg-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

[data-theme="dark"] #grammarFeedbackArea .table,
[data-theme="dark"] #grammarResultsDetails .table {
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] #grammarFeedbackArea .table th,
[data-theme="dark"] #grammarResultsDetails .table th {
    background-color: var(--bg-card);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] #grammarFeedbackArea .table td,
[data-theme="dark"] #grammarResultsDetails .table td {
    border-color: var(--border-color);
}

[data-theme="dark"] #grammarFeedbackArea .table .table-success,
[data-theme="dark"] #grammarResultsDetails .table .table-success {
    background-color: rgba(25, 135, 84, 0.25);
    color: #75d6a3;
}

[data-theme="dark"] #grammarFeedbackArea .table .table-warning,
[data-theme="dark"] #grammarResultsDetails .table .table-warning {
    background-color: rgba(255, 193, 7, 0.2);
    color: #ffd666;
}

/* ============================================================================
   Soundboard
   ============================================================================ */
.sound-btn {
    min-width: 70px;
    min-height: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    border-radius: 12px;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

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

.sound-btn .sound-letter {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.sound-btn .sound-ipa {
    display: block;
    font-size: 0.7rem;
    opacity: 0.7;
}

.sound-btn .sound-word {
    display: block;
    font-size: 0.65rem;
    margin-top: 2px;
    color: var(--bs-success);
    font-weight: 600;
}

.sound-btn-word {
    min-height: 85px;
}

.sound-btn.playing {
    transform: scale(1.1);
    border-color: var(--bs-success) !important;
    box-shadow: 0 0 0 3px rgba(25, 135, 84, 0.3);
}

/* ========================================
   HOME HERO WRAPPER + SIDE NUDGE
   ======================================== */

/* Three-column flex: [nudge slot] [hero] [phantom slot] */
.hero-wrapper {
    display: flex;
    align-items: center;
}

.hero-nudge-slot {
    width: 80px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 180px;
}

.hero-section {
    flex: 1;
    min-width: 0;
}

/* The nudge pill itself */
.home-side-nudge {
    cursor: pointer;
    border-radius: 14px;
    padding: 1rem 0.65rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    font-weight: 800;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    text-align: center;
    user-select: none;
    transition: transform 0.2s ease;
    line-height: 1.15;
    min-width: 58px;
}

.home-side-nudge:hover {
    transform: scale(1.07);
}

.home-side-nudge__icon {
    font-size: 1.5rem;
    display: block;
}

.home-side-nudge__count {
    font-size: 0.6rem;
    opacity: 0.75;
    display: block;
}

/* Gold — practice nudge */
.home-side-nudge--gold {
    background: #f59e0b;
    color: #1a0f00;
    box-shadow: 0 0 18px rgba(245, 158, 11, 0.55);
    animation: sideNudgeGold 1.7s ease-in-out infinite;
}

@keyframes sideNudgeGold {
    0%, 100% {
        background: #f59e0b;
        box-shadow: 0 0 14px rgba(245, 158, 11, 0.5);
    }
    50% {
        background: #fcd34d;
        box-shadow: 0 0 28px rgba(252, 211, 77, 0.9), 0 0 50px rgba(245, 158, 11, 0.4);
    }
}

/* Green — add words nudge */
.home-side-nudge--green {
    background: var(--accent-color);
    color: #fff;
    box-shadow: 0 0 18px rgba(124, 179, 66, 0.55);
    animation: sideNudgeGreen 1.7s ease-in-out infinite;
}

@keyframes sideNudgeGreen {
    0%, 100% {
        background: var(--accent-color);
        box-shadow: 0 0 14px rgba(124, 179, 66, 0.5);
    }
    50% {
        background: var(--accent-light);
        box-shadow: 0 0 28px rgba(174, 213, 129, 0.9), 0 0 50px rgba(124, 179, 66, 0.4);
    }
}

/* Mobile: stack vertically, nudge becomes a horizontal pill below the hero */
@media (max-width: 575px) {
    .hero-wrapper {
        flex-direction: column;
    }
    .hero-nudge-slot {
        width: 100%;
        min-height: auto;
        order: 3;
        margin-top: 1rem;
    }
    .hero-nudge-slot:last-child {
        display: none;
    }
    .home-side-nudge {
        flex-direction: row;
        gap: 0.6rem;
        padding: 0.65rem 1.5rem;
        border-radius: 50px;
        font-size: 0.75rem;
        width: 100%;
        justify-content: center;
    }
    .home-side-nudge__icon {
        font-size: 1.1rem;
    }
}

/* ========================================
   MOBILE BOTTOM NAVIGATION
   ======================================== */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    align-items: stretch;
    z-index: 1040;
    box-shadow: 0 -2px 8px var(--shadow-color);
}

.mobile-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.65rem;
    font-weight: 500;
    padding: 6px 2px;
    transition: color 0.15s ease, transform 0.1s ease;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.mobile-nav-item i {
    font-size: 1.35rem;
    line-height: 1;
}

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

.mobile-nav-item:active {
    transform: scale(0.88);
}

/* Bottom Sheet Overlay */
.mobile-sheet-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1050;
    animation: mobileOverlayFadeIn 0.2s ease;
}

.mobile-sheet-overlay.open {
    display: block;
}

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

/* Bottom Sheet Panel */
.mobile-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-card);
    border-radius: 16px 16px 0 0;
    border-top: 1px solid var(--border-color);
    padding: 0 1rem calc(1rem + 60px);
    z-index: 1051;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
    max-height: 70vh;
    overflow-y: auto;
}

.mobile-sheet.open {
    transform: translateY(0);
}

.mobile-sheet-handle {
    width: 40px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    margin: 10px auto 14px;
}

.mobile-sheet-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 4px;
}

.mobile-sheet-item {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 0.9rem 0.25rem;
    background: none;
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.15s ease;
    -webkit-tap-highlight-color: transparent;
}

.mobile-sheet-item:last-child {
    border-bottom: none;
}

.mobile-sheet-item:active {
    background-color: var(--bg-secondary);
}

.mobile-sheet-item i {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
    color: var(--accent-color);
}

@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex;
    }

    /* Push content above the bottom nav */
    main.container {
        padding-bottom: calc(1.5rem + 60px) !important;
    }

    footer {
        padding-bottom: 70px;
    }

    /* Hide the desktop horizontal tab bar */
    #mainTabs {
        display: none !important;
    }

    /* Tighter navbar action buttons */
    .navbar .d-flex.align-items-center {
        gap: 0.375rem !important;
    }

    .navbar .btn-sm {
        padding: 0.25rem 0.45rem;
    }

    /* Hide language label in navbar — prevents wrapping to second row on mobile */
    #userGreeting {
        display: none !important;
    }

    /* Hide ad placeholder on mobile until a real ad is configured */
    #adContainer {
        display: none !important;
    }
}

/* ========================================
   FROG MOUTH ANIMATION (All Devices)
   ======================================== */
@keyframes frogMouthOpenBlink {
    0%, 70%, 100% { opacity: 0; }
    78%, 93% { opacity: 1; }
}

@keyframes frogMouthClosedBlink {
    0%, 70%, 100% { opacity: 1; }
    78%, 93% { opacity: 0; }
}