/* FONT */
html {
    background-color: white;
}
body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #1A1A1A;
    background-color: white;
}

/* COLORS - Charte graphique TrainEvo */
:root {
    --blue-train: #1C3D5A; /* Bleu marine pour Train */
    --blue-evo: #0066FF; /* Bleu perçant pour Evo */
    --blue-light: #3A6EA5;
    --gray-light: #F5F5F5;
    --gray-dark: #1A1A1A;
    --te-border: #e9ecef;
    --te-muted: #666;
}

/* CONTAINER */
.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

/* HEADER */
header {
    background-color: white;
    padding: 20px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
header .header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header-right {
    display: flex;
    align-items: center;
    gap: 14px;
}
.logo {
    font-size: 28px;
    font-weight: 700;
}
.logo .train {
    color: var(--blue-evo);
}
.logo .evo {
    color: var(--blue-evo);
}
nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}
nav a {
    text-decoration: none;
    color: #1A1A1A;
    font-weight: 600;
}
nav a:hover {
    color: var(--blue-evo);
}
nav a.active {
    color: var(--blue-evo);
    font-weight: 700;
}

/* ===== Header : bouton paramètres (3 barres) ===== */
.te-settings-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--te-border);
    background: #fff;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
    padding: 0;
}

.te-settings-btn:hover {
    border-color: #cfe2ff;
}

.te-settings-bar {
    width: 18px;
    height: 2px;
    background: var(--blue-train);
    border-radius: 99px;
}

/* ===== Drawer paramètres (Accueil) ===== */
.te-settings-overlay {
    position: fixed;
    inset: 0;
    background: transparent;
    z-index: 999;
}

.te-settings-drawer {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(360px, 92vw);
    transform: translateX(105%);
    transition: transform 0.25s ease;
    z-index: 1000;
    padding: 14px;
    box-sizing: border-box;
    /* Exclut le drawer du filtre de luminosité pour que les contrôles restent visibles */
    filter: brightness(100%) contrast(100%) !important;
}

.te-settings-drawer.is-open {
    transform: translateX(0);
}

.te-settings-drawer-inner {
    height: 100%;
    padding: 16px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

.te-settings-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--te-border);
    margin-bottom: 12px;
}

.te-settings-title {
    font-weight: 900;
    color: var(--blue-train);
}

.te-settings-close {
    background: transparent;
    border: 1px solid var(--te-border);
    color: var(--blue-train);
    border-radius: 10px;
    padding: 8px 10px;
    font-weight: 800;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
}

.te-settings-close:hover {
    border-color: #cfe2ff;
    color: var(--blue-evo);
}

.te-settings-control {
    margin: 10px 0;
}

.te-settings-control label {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    font-weight: 800;
    color: var(--gray-dark);
    font-size: 14px;
}

.te-settings-value {
    color: var(--te-muted);
    font-weight: 800;
    font-size: 13px;
}

.te-settings-control input[type="range"] {
    width: 100%;
    margin-top: 10px;
}

.te-settings-switch {
    margin-top: 4px;
}

.te-switch-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.te-switch-labels {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.te-switch-title {
    font-weight: 900;
    color: var(--gray-dark);
    font-size: 14px;
}

.te-switch-sub {
    color: var(--te-muted);
    font-size: 13px;
}

.te-switch {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
}

.te-switch input {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
}

.te-switch-slider {
    width: 46px;
    height: 28px;
    border-radius: 999px;
    border: 1px solid var(--te-border);
    background: #f4f6f8;
    position: relative;
    transition: background 0.2s ease, border-color 0.2s ease;
    cursor: pointer;
}

.te-switch-slider::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 3px;
    width: 22px;
    height: 22px;
    border-radius: 999px;
    transform: translateY(-50%);
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.18);
    transition: transform 0.2s ease, background 0.2s ease;
}

.te-switch input:focus + .te-switch-slider {
    outline: none;
    border-color: #cfe2ff;
}

.te-switch input:checked + .te-switch-slider {
    background: rgba(0, 102, 255, 0.18);
    border-color: #cfe2ff;
}

.te-switch input:checked + .te-switch-slider::after {
    transform: translate(18px, -50%);
}

.te-settings-actions {
    margin-top: 8px;
}

.te-settings-note {
    margin-top: auto;
    color: var(--te-muted);
    font-size: 13px;
    line-height: 1.5;
}

/* ===== Mode sombre (Accueil) ===== */
html[data-theme="dark"] {
    --gray-light: #0b1220;
    --gray-dark: #e6eef7;
    --te-muted: #aab7c4;
    --te-border: rgba(255, 255, 255, 0.12);
    /* S'assure que le background reste cohérent pour les filtres */
    background-color: var(--gray-light);
}

html[data-theme="dark"] body {
    background: var(--gray-light);
    color: var(--gray-dark);
}

html[data-theme="dark"] header {
    background-color: var(--gray-light);
    box-shadow: 0 2px 10px rgba(0,0,0,0.40);
}

/* liens nav en mode sombre */
html[data-theme="dark"] nav a {
    color: var(--gray-dark);
}

html[data-theme="dark"] nav a:hover {
    color: var(--blue-evo);
}

html[data-theme="dark"] .hero {
    background-color: var(--gray-light);
}

html[data-theme="dark"] .about {
    background-color: var(--gray-light);
}

html[data-theme="dark"] .features {
    background-color: var(--gray-light);
}

html[data-theme="dark"] .subjects-section {
    background-color: var(--gray-light);
}

html[data-theme="dark"] .content-section {
    background-color: var(--gray-light);
}

html[data-theme="dark"] .te-card,
html[data-theme="dark"] .card,
html[data-theme="dark"] .subject-card,
html[data-theme="dark"] .filters-section,
html[data-theme="dark"] .finder-section {
    background: var(--gray-light);
    border-color: var(--te-border);
}

html[data-theme="dark"] .subject-card {
    box-shadow: 0 2px 12px rgba(0,0,0,0.35);
}

html[data-theme="dark"] .meta-tag {
    background: rgba(255,255,255,0.06);
    color: var(--gray-dark);
}

html[data-theme="dark"] .te-settings-btn {
    background: var(--gray-light);
    border-color: var(--te-border);
}

html[data-theme="dark"] .te-settings-bar {
    background: var(--gray-dark);
}

html[data-theme="dark"] .latest-link {
    background: var(--gray-light);
    border-color: var(--te-border);
    color: var(--te-muted);
}

html[data-theme="dark"] .pdf-link {
    background: transparent;
    border-color: rgba(0, 102, 255, 0.35);
}

html[data-theme="dark"] footer {
    background-color: var(--gray-light);
}

/* ===== TrainEvo UI helpers (IA/Quiz) ===== */
.te-card {
    background: #fff;
    border: 1px solid var(--te-border);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.te-muted {
    color: var(--te-muted);
}

.te-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.btn-ia {
    background: var(--blue-evo);
    color: #fff;
    border: none;
    padding: 10px 14px;
    border-radius: 10px;
    font-weight: 800;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
}

.btn-ia:hover {
    background: var(--blue-train);
}

.te-btn-dark {
    background: #1A1A1A !important;
    color: #fff !important;
}

.te-clickable {
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.te-clickable:hover {
    transform: translateY(-2px);
    border-color: #cfe2ff;
    box-shadow: 0 6px 18px rgba(0,0,0,0.10);
}

.te-stepper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin: 16px 0 22px 0;
}

.te-step {
    padding: 12px 14px;
    border: 1px solid var(--te-border);
    border-radius: 12px;
    background: #fff;
}

.te-step .te-step-top {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.te-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 999px;
    background: #e7f1ff;
    color: var(--blue-evo);
    font-weight: 800;
}

.te-step-title {
    font-weight: 800;
    color: var(--gray-dark);
}

.te-step-text {
    color: var(--te-muted);
    font-size: 13px;
    margin: 0;
}

.te-ia-shell {
    display: grid;
    grid-template-columns: minmax(260px, 320px) 1fr;
    gap: 18px;
    align-items: start;
}

@media (max-width: 900px) {
    .te-ia-shell {
        grid-template-columns: 1fr;
    }
}

.te-sidebar {
    position: sticky;
    top: 16px;
    padding: 16px;
}

.te-sidebar h2 {
    margin: 0 0 8px 0;
}

.te-main {
    padding: 16px;
}

.te-section-title {
    font-weight: 900;
    margin: 0 0 10px 0;
}

.te-kv {
    font-size: 13px;
    color: var(--te-muted);
    margin: 0;
}

.te-input, .te-select, .te-textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--gray-light);
    border-radius: 10px;
    font-size: 15px;
    font-family: 'Inter', sans-serif;
}

.te-textarea {
    min-height: 160px;
    resize: vertical;
}

.te-input:focus, .te-select:focus, .te-textarea:focus {
    outline: none;
    border-color: var(--blue-evo);
}

.te-output {
    margin-top: 12px;
    padding: 14px 14px;
    border: 1px solid var(--te-border);
    border-radius: 12px;
    background: #fff;
}

/* HERO */
.hero {
    display: flex;
    align-items: center;
    padding: 80px 0;
    background-color: white;
}
.hero-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}
.hero-text {
    flex: 1;
    min-width: 300px;
}
.hero-text h1 {
    font-size: 48px;
    margin-bottom: 20px;
}
.hero-text p {
    font-size: 18px;
    margin-bottom: 30px;
}
.btn-primary {
    background-color: var(--blue-evo);
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 5px;
    display: inline-block;
    transition: background-color 0.3s;
}
.btn-primary:hover {
    background-color: var(--blue-train);
}
.btn-secondary {
    background-color: var(--blue-train);
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 5px;
    display: inline-block;
    transition: background-color 0.3s;
}
.btn-secondary:hover {
    background-color: var(--blue-evo);
}
.hero-image img {
    max-width: 500px;
    width: 100%;
}

/* ABOUT */
.about {
    padding: 60px 0;
    text-align: left;
}
.about h2 {
    font-size: 36px;
    margin-bottom: 20px;
}
.about ul {
    list-style: disc;
    padding-left: 20px;
    margin-top: 15px;
}
.about ul li {
    margin-bottom: 10px;
    font-size: 16px;
}
.about strong {
    color: var(--blue-evo);
}

/* FEATURES */
.features {
    padding: 60px 0;
    background-color: white;
    text-align: center;
}
.features h2 {
    font-size: 36px;
    margin-bottom: 40px;
}
.feature-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}
.card {
    background-color: var(--gray-light);
    padding: 30px;
    border-radius: 10px;
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    text-align: left;
}
.card h3 {
    color: var(--blue-evo);
    margin-bottom: 15px;
}

/* TESTIMONIALS */
.testimonials {
    padding: 60px 0;
    background-color: var(--blue-train);
    color: white;
    text-align: center;
}
.testimonials h2 {
    font-size: 36px;
    margin-bottom: 40px;
}
.testimonial-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}
.testimonial-card {
    background-color: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 10px;
    max-width: 300px;
}
.testimonial-card span {
    display: block;
    margin-top: 15px;
    font-weight: 600;
}

/* FOOTER */
footer {
    background-color: #1A1A1A;
    color: white;
    padding: 40px 0;
    text-align: center;
}
footer .train {
    color: var(--blue-evo);
}
footer .evo {
    color: var(--blue-evo);
}
footer .socials a {
    color: white;
    margin: 0 10px;
    text-decoration: none;
}
footer .socials a:hover {
    color: var(--blue-evo);
}

/* FILTERS & SEARCH */
.filters-section {
    background-color: white;
    padding: 30px 0;
    border-bottom: 2px solid var(--gray-light);
}
.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
}
.filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.filter-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-dark);
}
.filter-group select,
.filter-group input {
    padding: 10px 15px;
    border: 2px solid var(--gray-light);
    border-radius: 5px;
    font-size: 14px;
    font-family: 'Inter', sans-serif;
}
.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: var(--blue-evo);
}
.search-box {
    flex: 1;
    min-width: 200px;
}
.btn-filter {
    background-color: var(--blue-evo);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
}
.btn-filter:hover {
    background-color: var(--blue-train);
}

/* ===== Base de sujets : Finder (UI épurée) ===== */
.finder-section {
    background: #fff;
    padding: 34px 0 22px 0;
    border-bottom: 1px solid var(--te-border);
}

.finder {
    padding: 18px 18px 14px 18px;
    border-radius: 14px;
}

.finder-header h2 {
    margin: 0 0 6px 0;
    color: var(--blue-train);
    font-size: 22px;
    font-weight: 900;
}

.finder-header p {
    margin: 0 0 14px 0;
    color: var(--te-muted);
}

.finder-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    align-items: end;
}

.finder-grid--more {
    margin-top: 12px;
}

.finder-search {
    margin-top: 14px;
}

.finder-search label {
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
}

.finder-search input {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid var(--gray-light);
    border-radius: 10px;
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    box-sizing: border-box;
}

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

.finder-more {
    margin-top: 12px;
    padding-top: 6px;
}

.finder-more summary {
    cursor: pointer;
    user-select: none;
    color: var(--blue-train);
    font-weight: 800;
}

.finder-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.btn-ghost {
    background: transparent;
    color: var(--blue-train);
    border: 1px solid var(--te-border);
    padding: 10px 14px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
}

.btn-ghost:hover {
    border-color: #cfe2ff;
    color: var(--blue-evo);
}

.latest-wrap {
    margin-top: 12px;
    display: flex;
    justify-content: center;
}

.latest-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid var(--te-border);
    color: var(--te-muted);
    text-decoration: none;
    font-weight: 700;
    font-size: 13px;
    background: #fff;
}

.latest-link:hover {
    color: var(--blue-evo);
    border-color: #cfe2ff;
}

/* SUBJECTS GRID */
.subjects-section {
    padding: 40px 0;
    background-color: var(--gray-light);
}
.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}
.subject-card {
    background-color: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}
.subject-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}
.subject-card h3 {
    color: var(--blue-evo);
    margin-bottom: 10px;
    font-size: 20px;
}
.subject-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 15px 0;
    font-size: 14px;
}
.meta-tag {
    background-color: var(--gray-light);
    padding: 5px 12px;
    border-radius: 20px;
    color: var(--gray-dark);
}
.difficulty {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
    margin-top: 10px;
}
.difficulty.facile {
    background-color: #d4edda;
    color: #155724;
}
.difficulty.moyen {
    background-color: #fff3cd;
    color: #856404;
}
.difficulty.difficile {
    background-color: #f8d7da;
    color: #721c24;
}
.subject-card a {
    color: var(--blue-evo);
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    margin-top: 15px;
}
.subject-card a:hover {
    text-decoration: underline;
}

.subject-desc {
    margin: 10px 0 0 0;
    color: var(--te-muted);
    font-size: 14px;
    line-height: 1.5;
}

.subject-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.pdf-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid #cfe2ff;
    color: var(--blue-evo);
    text-decoration: none;
    font-weight: 800;
    background: #fff;
}

.pdf-link:hover {
    text-decoration: none;
    border-color: var(--blue-evo);
}

.pdf-link.is-disabled {
    color: #9aa6b2;
    border-color: var(--te-border);
    background: #fafbfc;
    pointer-events: none;
}

/* FORM STYLES */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px 0;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--gray-dark);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--gray-light);
    border-radius: 5px;
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    box-sizing: border-box;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--blue-evo);
}
.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* PAGE HEADER */
.page-header {
    background: linear-gradient(135deg, var(--blue-train) 0%, var(--blue-evo) 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}
.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}
.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

/* CONTENT SECTIONS */
.content-section {
    padding: 60px 0;
}
.content-section h2 {
    font-size: 32px;
    color: var(--blue-train);
    margin-bottom: 20px;
}
.content-section h3 {
    font-size: 24px;
    color: var(--blue-evo);
    margin-top: 30px;
    margin-bottom: 15px;
}

/* RESPONSIVE */
@media (max-width: 900px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    .hero-text h1 {
        font-size: 36px;
    }
    .feature-cards, .testimonial-cards {
        flex-direction: column;
        align-items: center;
    }
    .filters-container {
        flex-direction: column;
        align-items: stretch;
    }
    .filter-group {
        width: 100%;
    }
    .subjects-grid {
        grid-template-columns: 1fr;
    }
    .finder-grid {
        grid-template-columns: 1fr;
    }
    nav ul {
        flex-direction: column;
        gap: 10px;
    }
    header .header-container {
        flex-direction: column;
        gap: 20px;
    }
    .header-right {
        width: 100%;
        justify-content: space-between;
    }
    .content-section > div[style*="grid"] {
        grid-template-columns: 1fr !important;
    }
    .page-header h1 {
        font-size: 32px;
    }
}