/**
 * Imagilire Bulle - Module Bibliothèque
 * Lecture avec aide syllabique et TTS
 * Version: 1.0.0
 */

/* ===== PAGE BIBLIOTHÈQUE ===== */
#page-bibliotheque {
    background: linear-gradient(180deg, var(--bibliotheque-light) 0%, var(--background-color) 100%);
}

[data-theme="dark"] #page-bibliotheque {
    background: linear-gradient(180deg, rgba(54, 177, 179, 0.10) 0%, var(--background-color) 55%, var(--background-secondary) 100%);
}

/* ===== EN-TÊTE BIBLIOTHÈQUE ===== */
.bibliotheque-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* ===== SÉLECTEUR DE NIVEAU ===== */
.level-section {
    margin-bottom: var(--spacing-4);
    padding: var(--spacing-3) var(--spacing-4);
    background: linear-gradient(135deg, rgba(54, 177, 179, 0.08), rgba(138, 107, 185, 0.08));
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--bibliotheque-primary);
}

[data-theme="dark"] .level-section {
    background: rgba(255, 255, 255, 0.03);
    border-left-color: var(--bibliotheque-primary);
}

.level-section__title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    margin-bottom: var(--spacing-2);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

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

.level-selector {
    display: flex;
    gap: var(--spacing-2);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: var(--spacing-1) 0;
    scroll-snap-type: x mandatory;
    scroll-padding: 0 var(--spacing-4);
}

.level-selector::-webkit-scrollbar {
    display: none;
}

.level-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    min-width: 85px;
    background-color: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    scroll-snap-align: start;
}

[data-theme="dark"] .level-chip {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.10);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
}

.level-chip:hover {
    border-color: var(--bibliotheque-primary);
    transform: scale(1.02);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

[data-theme="dark"] .level-chip:hover {
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
}

.level-chip.active {
    background: var(--bibliotheque-gradient);
    border-color: var(--bibliotheque-primary);
    color: var(--text-inverse);
    box-shadow: 0 4px 12px rgba(54, 177, 179, 0.3);
    transform: scale(1.05);
}

[data-theme="dark"] .level-chip.active {
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.55);
}

/* ===== SÉLECTEUR DE MATIÈRES ===== */
.subject-section {
    margin-bottom: var(--spacing-4);
    padding: var(--spacing-3) var(--spacing-4);
    background: linear-gradient(135deg, rgba(54, 177, 179, 0.05), rgba(138, 107, 185, 0.05));
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--bibliotheque-primary);
}

[data-theme="dark"] .subject-section {
    background: rgba(255, 255, 255, 0.03);
    border-left-color: var(--bibliotheque-primary);
}

.subject-section__title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    margin-bottom: var(--spacing-2);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

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

.subject-selector {
    display: flex;
    gap: var(--spacing-2);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: var(--spacing-1) 0;
    scroll-snap-type: x mandatory;
    scroll-padding: 0 var(--spacing-4);
}

.subject-selector::-webkit-scrollbar {
    display: none;
}

.subject-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    min-width: fit-content;
    background-color: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    scroll-snap-align: start;
}

[data-theme="dark"] .subject-chip {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.10);
    color: var(--text-secondary);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
}

.subject-chip:hover {
    border-color: var(--bibliotheque-primary);
    color: var(--bibliotheque-primary);
    background-color: rgba(54, 177, 179, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

[data-theme="dark"] .subject-chip:hover {
    background-color: rgba(54, 177, 179, 0.12);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
}

.subject-chip.active {
    background: linear-gradient(135deg, var(--bibliotheque-primary), #8A6BB9);
    border-color: var(--bibliotheque-primary);
    color: var(--text-inverse);
    box-shadow: 0 4px 12px rgba(54, 177, 179, 0.3);
    transform: scale(1.05);
}

.subject-chip__icon {
    font-size: 18px;
    line-height: 1;
}

.subject-chip__label {
    font-weight: 600;
}

.subject-chip__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
}

[data-theme="dark"] .subject-chip__count {
    background-color: rgba(255, 255, 255, 0.12);
}

.subject-chip.active .subject-chip__count {
    background-color: rgba(255, 255, 255, 0.25);
}


/* ===== LISTE DES RESSOURCES ===== */
.resources-section {
    margin-bottom: var(--spacing-6);
}

/* Compteur de résultats */
.resources-count {
    padding: var(--spacing-2) var(--spacing-3);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

[data-theme="dark"] .resources-count {
    color: var(--text-secondary);
}

.resources-count strong {
    color: var(--bibliotheque-primary);
    font-weight: 600;
}

.resources-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3);
    padding-bottom: var(--spacing-4);
}

.resource-card {
    display: flex;
    flex-direction: row;
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    border: 1px solid var(--border-light);
}

[data-theme="dark"] .resource-card {
    background-color: var(--surface-color);
    border-color: rgba(255, 255, 255, 0.06);
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.45);
}

.resource-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateY(-1px);
    border-color: var(--bibliotheque-primary);
}

[data-theme="dark"] .resource-card:hover {
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.55);
}

.resource-card:active {
    transform: scale(0.98);
}

.resource-card__icon {
    width: 80px;
    min-height: 100px;
    background: var(--bibliotheque-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 32px;
    position: relative;
}

.resource-card__icon::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.1) 100%);
    pointer-events: none;
}

.resource-card__content {
    flex: 1;
    padding: var(--spacing-3);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-width: 0;
}

.resource-card__type {
    font-size: 10px;
    color: var(--bibliotheque-primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-1);
}

.resource-card__title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.resource-card__author {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: var(--spacing-2);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.resource-card__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: 11px;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.resource-card__level {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--spacing-2);
    background-color: rgba(54, 177, 179, 0.1);
    color: var(--bibliotheque-primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 10px;
}

.resource-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

/* ===== LECTEUR DE TEXTE ===== */
.reader-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.reader-view {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: calc(100vh - var(--header-height) - var(--nav-height));
    min-height: calc(100dvh - var(--header-height) - var(--nav-height));
}

.reader-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4);
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-light);
}

.reader-header .btn--icon {
    background-color: transparent;
    color: var(--bibliotheque-primary);
    border-color: transparent;
}

.reader-header .btn--icon:hover {
    background-color: var(--bibliotheque-light);
}

[data-theme="dark"] .reader-header .btn--icon:hover {
    background-color: rgba(54, 177, 179, 0.12);
}

.reader-back-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--bibliotheque-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.reader-back-btn:hover {
    background-color: var(--bibliotheque-light);
    transform: translateX(-2px);
}

[data-theme="dark"] .reader-back-btn:hover {
    background-color: rgba(54, 177, 179, 0.12);
}

.reader-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    flex: 1;
    margin: 0 var(--spacing-4);
}

.reader-settings-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bibliotheque-primary);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.reader-settings-btn:hover {
    background-color: var(--bibliotheque-light);
    transform: scale(1.1);
}

[data-theme="dark"] .reader-settings-btn:hover {
    background-color: rgba(54, 177, 179, 0.12);
}

/* Zone de lecture */
.reader-content {
    flex: 1;
    padding: var(--spacing-5);
    overflow-y: auto;
    background-color: var(--surface-color);
}

.reader-text {
    font-family: var(--font-family-reading);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-loose);
    color: var(--text-primary);
    max-width: 700px;
    margin: 0 auto;
}

/* Styling amélioré pour les paragraphes */
.reader-text p {
    margin-bottom: var(--spacing-4);
    text-align: justify;
}

/* Styling pour les séparateurs de questions */
.reader-text .question-separator,
.reader-text .section-separator {
    display: block;
    font-weight: 600;
    color: var(--bibliotheque-primary);
    margin-top: var(--spacing-6);
    margin-bottom: var(--spacing-3);
    padding: var(--spacing-3);
    background: linear-gradient(135deg, var(--bibliotheque-light), rgba(54, 177, 179, 0.05));
    border-left: 4px solid var(--bibliotheque-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
}

[data-theme="dark"] .reader-text .question-separator,
[data-theme="dark"] .reader-text .section-separator {
    background: rgba(54, 177, 179, 0.10);
}

.reader-text .question-separator {
    background: linear-gradient(135deg, var(--bibliotheque-light), rgba(54, 177, 179, 0.08));
}

/* Amélioration des listes de questions */
.reader-text p:has(br) {
    line-height: 1.8;
}

/* Styles de syllabation Imagilire */
.reader-text .mot {
    display: inline;
    white-space: nowrap;
}

.reader-text .mot-long {
    white-space: normal;
}

.reader-text .texte-defaut {
    display: inline;
}

.reader-text .syllabe {
    display: inline;
    font-weight: 500;
}

.reader-text .syllabe-rouge {
    color: var(--syllabe-rouge);
}

.reader-text .syllabe-bleu {
    color: var(--syllabe-bleu);
}

.reader-text .syllabe-vert {
    color: var(--syllabe-vert);
}

.reader-text .syllabe-violet {
    color: var(--syllabe-violet);
}

.reader-text .syllabe-orange {
    color: var(--syllabe-orange);
}

.reader-text .lettre-muette {
    color: var(--lettre-muette);
    opacity: 0.6;
    font-style: italic;
}

/* Mot en cours de lecture TTS */
.reader-text .word-highlight {
    background-color: var(--secondary-color);
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    transition: background-color 0.1s ease;
}

/* Barre d'outils du lecteur */
.reader-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-light);
}

[data-theme="dark"] .reader-toolbar {
    background-color: var(--surface-color);
    border-top-color: rgba(255, 255, 255, 0.08);
}

.toolbar-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-3);
    background-color: var(--background-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    min-width: 60px;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

[data-theme="dark"] .toolbar-btn {
    background-color: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

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

[data-theme="dark"] .toolbar-btn:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.toolbar-btn.active {
    background-color: var(--bibliotheque-primary);
    color: var(--text-inverse);
}

.toolbar-btn i {
    font-size: 20px;
}

.toolbar-btn span {
    font-size: var(--font-size-xs);
    font-weight: 500;
}

/* Bouton play/pause central */
.tts-play-btn {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bibliotheque-gradient);
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    font-size: 24px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.tts-play-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.tts-play-btn:active {
    transform: scale(0.98);
}

/* ===== PARAMÈTRES DE LECTURE ===== */
.reader-settings {
    padding: var(--spacing-5);
}

.setting-group {
    margin-bottom: var(--spacing-6);
}

.setting-label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

.setting-value {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Sélecteur de taille de police */
.font-size-selector {
    display: flex;
    gap: var(--spacing-2);
}

.font-size-btn {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    text-align: center;
    background-color: var(--background-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 600;
    color: var(--text-primary);
}

[data-theme="dark"] .font-size-btn {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.10);
}

.font-size-btn:hover {
    border-color: var(--bibliotheque-primary);
    transform: translateY(-2px);
}

.font-size-btn--active {
    border-color: var(--bibliotheque-primary);
    background-color: var(--bibliotheque-light);
    color: var(--bibliotheque-primary);
}

[data-theme="dark"] .font-size-btn--active {
    background-color: rgba(54, 177, 179, 0.12);
}

[data-theme="dark"] .font-size-btn:hover {
    border-color: rgba(54, 177, 179, 0.60);
}

.font-size-btn[data-size="small"] {
    font-size: 14px;
}

.font-size-btn[data-size="medium"] {
    font-size: 16px;
}

.font-size-btn[data-size="large"] {
    font-size: 18px;
}

.font-size-btn[data-size="xlarge"] {
    font-size: 20px;
}

/* Options de police */
.font-family-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.radio-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--background-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

[data-theme="dark"] .radio-option {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.10);
}

.radio-option:hover {
    border-color: var(--bibliotheque-primary);
}

.radio-option input:checked + span {
    color: var(--bibliotheque-primary);
    font-weight: 600;
}

[data-theme="dark"] .radio-option input:checked + span {
    color: var(--bibliotheque-primary);
}

.radio-option input {
    margin-right: var(--spacing-3);
}

.font-size-option {
    flex: 1;
    padding: var(--spacing-3);
    text-align: center;
    background-color: var(--background-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.font-size-option:hover {
    border-color: var(--text-muted);
}

.font-size-option.active {
    border-color: var(--bibliotheque-primary);
    background-color: var(--bibliotheque-light);
}

.font-size-option span {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
}

.font-size-option small {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Sélecteur de police */
.font-family-selector {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.font-family-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--background-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.font-family-option:hover {
    border-color: var(--text-muted);
}

.font-family-option.active {
    border-color: var(--bibliotheque-primary);
    background-color: var(--bibliotheque-light);
}

.font-family-option input {
    display: none;
}

.font-family-option .checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    margin-right: var(--spacing-3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.font-family-option.active .checkmark {
    border-color: var(--bibliotheque-primary);
    background-color: var(--bibliotheque-primary);
}

.font-family-option.active .checkmark::after {
    content: '✓';
    color: var(--text-inverse);
    font-size: 12px;
}

.font-preview {
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

/* ===== ÉTAT VIDE ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-8) var(--spacing-4);
}

.empty-state__icon {
    font-size: 48px;
    margin-bottom: var(--spacing-3);
    opacity: 0.6;
    color: var(--text-light);
}

.empty-state__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.empty-state__text {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    max-width: 320px;
    margin: 0 auto;
    line-height: 1.6;
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-3);
    opacity: 0.6;
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.empty-state-description {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    max-width: 320px;
    margin: 0 auto;
    line-height: 1.6;
}

[data-theme="dark"] .empty-state__icon,
[data-theme="dark"] .empty-state-icon {
    color: var(--text-light);
}

[data-theme="dark"] #reader-settings-modal .modal-header {
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] #reader-settings-modal .modal-handle {
    background-color: rgba(255, 255, 255, 0.18);
}

[data-theme="dark"] #reader-settings-modal .modal-close:hover {
    background-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] #reader-settings-modal .select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23E2E8F0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

/* ===== RESPONSIVE ===== */
/* Tablette */
@media (min-width: 640px) {
    .level-section {
        padding: var(--spacing-4);
    }
    
    .level-selector {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .subject-section {
        padding: var(--spacing-4);
    }
    
    .subject-selector {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-4);
    }
    
    .resource-card__icon {
        width: 90px;
        min-height: 110px;
        font-size: 36px;
    }
    
    .resource-card__content {
        padding: var(--spacing-4);
    }
    
    .resource-card__title {
        font-size: var(--font-size-base);
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .level-section__title::before {
        content: '🎓';
        font-size: var(--font-size-lg);
    }
    
    .resources-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .reader-content {
        padding: var(--spacing-8);
        max-width: 1000px;
    }
    
    .reader-text {
        font-size: var(--font-size-xl);
        max-width: 1000px;
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .resources-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-5);
    }
}