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

body {
    font-family: "Arial", sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

/* NAVBAR */
/* ==================== HEADER GLOBAL ==================== */
.site-header {
    background-color: #f8f9fa;
    text-align: center;
    padding: 20px 0;
    border-bottom: 3px solid #003366;
}

.site-branding {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 10px;
}

.site-logo {
    width: 80px;
    height: auto;
    margin-bottom: 8px;
}

.site-title {
    font-size: 2rem;
    color: #003366;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0;
}

/* ==================== NAVIGATION ==================== */
.main-nav {
    background-color: #003366;
    width: 100%;
    display: flex;
    justify-content: center;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 30px;
    padding: 0;
    margin: 0;
}

.nav-links li {
    display: inline;
}

.nav-links a {
    display: block;
    color: white;
    text-transform: uppercase;
    font-weight: bold;
    font-size: 0.95rem;
    text-decoration: none;
    padding: 15px 0;
    transition: background-color 0.3s;
}

.nav-links a:hover {
    background-color: #ffcc00;
    color: #003366;
}

/* RESPONSIVE MOBILE */
@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        gap: 0;
    }
    .nav-links a {
        padding: 12px 0;
    }
}


/* BOUTON SWITCH */

.language-switch {
    position: absolute;
    top: 15px;
    right: 20px;
}

.btn-lang {
    background-color: white;
    border: 2px solid #003366;
    color: #003366;
    font-weight: bold;
    cursor: pointer;
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 0.9rem;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-lang:hover {
    background-color: #003366;
    color: white;
}


/* HERO */
.hero {
    background-image: url('/assets/brain-hero.jpg'); /* À remplacer */
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 120px 20px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 51, 102, 0.7);
}

.hero h1 {
    font-size: 3rem;
    font-weight: bold;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.2rem;
    position: relative;
    z-index: 1;
}

/* SECTIONS */
section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
    background-color: white;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

section h2 {
    font-size: 2rem;
    color: #003366;
    margin-bottom: 20px;
    text-transform: uppercase;
    border-bottom: 3px solid #ffcc00;
    display: inline-block;
}

/* CARDS */
.cards {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: space-between;
}

.card {
    background: #f1f5f9;
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    flex: 1 1 calc(33% - 20px);
    text-align: center;
    text-decoration: none;
    color: inherit;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card h3 {
    color: #003366;
    margin-bottom: 10px;
    font-size: 1.2rem;
    text-transform: uppercase;
}

.card p {
    font-size: 0.95rem;
    color: #555;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    background-color: #e8f1fa;
}

/* INSTITUT LIST */
.institut-list {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}

.institut-list li {
    background: #f8f9fa;
    border-left: 4px solid #003366;
    padding: 15px;
    margin-bottom: 10px;
    transition: background-color 0.3s ease;
}

.institut-list strong {
    color: #003366;
    font-weight: bold;
}

.institut-list a {
    color: #007acc;
    font-weight: bold;
    text-decoration: none;
    transition: color 0.3s ease;
}

.institut-list a:hover {
    color: #ff6600;
}

/* SOMMAIRE - En-tête général */
.sommaire {
    text-align: center;
    margin-bottom: 30px;
    padding: 40px 20px;
    background-color: #f1f5f9;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.sommaire h1 {
    font-size: 2.5rem;
    color: #003366;
    text-transform: uppercase;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.sommaire p {
    font-size: 1.1rem;
    color: #555;
    max-width: 800px;
    margin: 0 auto;
}

/* LISTE DE BLOCS DU SOMMAIRE */
.sommaire-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-top: 20px;
}

/* Chaque bloc cliquable */
.sommaire-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background: #f1f5f9;
    padding: 15px 20px;
    border-radius: 50px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    text-decoration: none;
    color: #003366;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    border: 2px solid #003366;
}

.sommaire-item img {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 50%;
    background-color: white;
}

.sommaire-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.15);
    background-color: #e8f1fa;
}

.sommaire-item h3 {
    margin: 0;
    font-size: 1.1rem;
    color: #003366;
    text-transform: uppercase;
    flex: 1;
    text-align: left;
}


/* RESPONSIVE - Adaptation mobile */
@media (max-width: 768px) {
    .sommaire-item {
        flex: 1 1 calc(100% - 20px);
    }

    .sommaire h1 {
        font-size: 2rem;
    }
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #003366;
    color: white;
    text-transform: uppercase;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #ff6600;
}


/* FOOTER */
footer {
    background: #003366;
    color: white;
    text-align: center;
    padding: 15px 0;
    font-size: 0.9rem;
    margin-top: 30px;
}

/* BUTTONS (si besoin) */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #003366;
    color: white;
    text-decoration: none;
    text-transform: uppercase;
    font-weight: bold;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #ff6600;
}


/* ==================== PAGE COURS ==================== */

main.content {
    max-width: 1000px;
    margin: 40px auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    border-radius: 8px;
    line-height: 1.8;
    font-size: 1.1rem;
}

/* TITRES */
main h1 {
    font-size: 2.2rem;
    color: #003366;
    margin-bottom: 20px;
    text-transform: uppercase;
    border-bottom: 3px solid #ffcc00;
    padding-bottom: 5px;
}

main h2 {
    font-size: 1.8rem;
    color: #005ea5;
    margin-top: 30px;
    margin-bottom: 15px;
    border-bottom: 2px solid #d8d8d8;
    padding-bottom: 5px;
}

/* PARAGRAPHES */
main p {
    margin-bottom: 15px;
    color: #333;
}

/* LIENS DANS LE TEXTE */
main a {
    color: #007acc;
    text-decoration: underline;
    font-weight: bold;
}

main a:hover {
    color: #ff6600;
}

/* BLOCS EXEMPLE / DÉMONSTRATION */
.exemple, .demonstration {
    background-color: #f1f5f9;
    padding: 15px;
    border-left: 5px solid #003366;
    margin: 20px 0;
    font-style: italic;
    position: relative;
}

.exemple::before {
    content: "Exemple";
    font-weight: bold;
    text-transform: uppercase;
    color: #003366;
    position: absolute;
    top: -12px;
    background-color: #f1f5f9;
    padding: 2px 8px;
    font-size: 0.85rem;
}

.demonstration::before {
    content: "Démonstration";
    font-weight: bold;
    text-transform: uppercase;
    color: #ff6600;
    position: absolute;
    top: -12px;
    background-color: #f1f5f9;
    padding: 2px 8px;
    font-size: 0.85rem;
}

/* DÉFINITION / CONCEPT CLÉ */
.definition {
    background-color: #fff8dc;
    padding: 15px;
    border: 1px solid #ffcc00;
    margin: 20px 0;
    font-weight: bold;
    color: #665500;
}

/* FORMULE MATHÉMATIQUE */
.formule {
    background-color: #f8f8f8;
    padding: 15px;
    border: 1px solid #ccc;
    font-family: "Courier New", Courier, monospace;
    font-size: 1rem;
    text-align: center;
    margin: 15px 0;
}

/* LISTES */
main ul, main ol {
    margin: 15px 0;
    padding-left: 30px;
}

main li {
    margin-bottom: 5px;
}

/* HIGHLIGHT */
.highlight {
    background-color: #ffeb3b;
    padding: 2px 5px;
    font-weight: bold;
}

/* CITATION */
.citation {
    font-style: italic;
    border-left: 4px solid #003366;
    padding-left: 10px;
    margin: 15px 0;
    color: #555;
}

/* RESPONSIVE POUR MOBILE */
@media (max-width: 768px) {
    main.content {
        padding: 15px;
        font-size: 1rem;
    }

    main h1 {
        font-size: 1.8rem;
    }

    main h2 {
        font-size: 1.5rem;
    }
}

/* ==================== PAGE COURS AVEC SOMMAIRE ==================== */

.container {
    display: flex;
    gap: 20px;
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

/* SIDEBAR - SOMMAIRE FIXE */
.sidebar {
    position: sticky;
    top: 80px;
    width: 300px;  
    background-color: #f1f5f9;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    height: fit-content;
}

.sidebar h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #003366;
    text-transform: uppercase;
    border-bottom: 2px solid #ffcc00;
    padding-bottom: 5px;
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar li {
    margin-bottom: 8px;
}

.sidebar a {
    text-decoration: none;
    color: #007acc;
    font-weight: bold;
    transition: color 0.3s ease;
}

.sidebar a:hover {
    color: #ff6600;
}

/* ZONE PRINCIPALE DE CONTENU */
main.content {
    flex: 1;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* TITRES */
main h1 {
    font-size: 2.2rem;
    color: #003366;
    margin-bottom: 20px;
    text-transform: uppercase;
    border-bottom: 3px solid #ffcc00;
    padding-bottom: 5px;
}

main h2 {
    font-size: 1.5rem;
    color: #005ea5;
    margin-top: 30px;
    margin-bottom: 15px;
    border-bottom: 2px solid #d8d8d8;
    padding-bottom: 5px;
}

/* PARAGRAPHES */
main p {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* DEFINITION (mise en valeur) */
.definition {
    background-color: #fff8dc;
    padding: 15px;
    border: 1px solid #ffcc00;
    margin: 20px 0;
    font-weight: bold;
    color: #665500;
    border-radius: 5px;
}

/* LIENS DANS LE TEXTE */
main a {
    color: #007acc;
    text-decoration: underline;
    font-weight: bold;
}

main a:hover {
    color: #ff6600;
}

/* RESPONSIVE MOBILE */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    .sidebar {
        position: static;
        width: 100%;
        margin-bottom: 20px;
    }
    main.content {
        padding: 15px;
    }
}

/* ==================== QUIZZ IRM ==================== */


.quiz-section {
    margin: 30px 0;
    padding: 20px;
    background-color: #f1f5f9;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.quiz-image {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
}

.quiz-choices {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.quiz-choice {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease;
    border: 3px solid transparent;
}

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

.quiz-choice:hover {
    transform: scale(1.1);
    border-color: #003366;
}

.quiz-result {
    font-weight: bold;
    margin-top: 15px;
    font-size: 1.1rem;
}

.quiz-description {
    margin-top: 10px;
    font-style: italic;
    color: #555;
}

.btn {
    margin-top: 15px;
    padding: 10px 20px;
    background-color: #003366;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
    font-weight: bold;
    text-transform: uppercase;
}

.btn:hover {
    background-color: #ff6600;
}


/* STYLISATION DES BLOCS FORMULES */
.formula-box {
    background: #f4f4f4;
    border-left: 5px solid #003366;
    padding: 15px;
    font-size: 1.2rem;
    text-align: center;
    margin: 20px 0;
    border-radius: 6px;
    font-family: "Times New Roman", serif;
}

/* MISE EN VALEUR DES TITRES */
h1, h2 {
    font-family: "Poppins", sans-serif;
    font-weight: 700;
    color: #002b5c;
    margin-bottom: 15px;
}

/* LISTES DÉFINITIONS */
ul {
    padding-left: 20px;
}

ul li {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

/* AJUSTEMENT DE L'ASPECT RESPONSIVE */
@media (max-width: 768px) {
    .formula-box {
        font-size: 1rem;
        padding: 10px;
    }
}


/* ==================== TUTORIELS ==================== */

.tuto-content {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #fdfdfd;
    color: #333;
    padding: 40px;
}

/* Titres dans tuto */
.tuto-content h1,
.tuto-content h2,
.tuto-content h3 {
    color: #004080;
}

/* Bloc de code */
.tuto-content pre {
    background-color: #f4f4f4;
    padding: 10px;
    border-left: 4px solid #004080;
    overflow-x: auto;
    margin-bottom: 20px;
}

/* Code inline */
.tuto-content code {
    font-family: Consolas, Monaco, monospace;
    background-color: #f4f4f4;
    padding: 2px 4px;
    border-radius: 4px;
}

/* Séparateur horizontal */
.tuto-content hr {
    border: none;
    border-top: 1px solid #ccc;
    margin: 30px 0;
}


/* ==================== CAROUSEL ==================== */

.carousel {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 40px auto;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.carousel-track img {
    width: 100%;
    flex-shrink: 0;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    border: none;
    color: white;
    font-size: 2rem;
    padding: 10px;
    cursor: pointer;
    z-index: 1;
}

.carousel-btn.prev {
    left: 10px;
}

.carousel-btn.next {
    right: 10px;
}