/* ============================================
   MOOC EXCÈS - Style Art Déco / Années 20
   ============================================ */

:root {
    /* Palette Art Déco */
    --or-deco: #d4af37;
    --noir-profond: #0d0d0d;
    --creme: #f5f0e8;
    --bordeaux: #6d1f1f;
    --vert-emeraude: #2d5016;
    --bleu-nuit: #1a1a2e;
    
    /* Typographie Gatsby */
    --deco-title: 'Playfair Display', 'Cormorant Garamond', Georgia, serif;
    --deco-body: 'Raleway', 'Lato', sans-serif;
    --deco-accent: 'Cinzel', serif;
}

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

body {
    font-family: var(--deco-body);
    background: var(--noir-profond);
    color: var(--creme);
    line-height: 1.7;
}

/* ============================================
   HEADER ART DÉCO
   ============================================ */

.mooc-header {
    background: linear-gradient(180deg, var(--noir-profond) 0%, #1a1a1a 100%);
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
    border-bottom: 3px solid var(--or-deco);
    overflow: hidden;
}

/* Motif sunburst Art Déco */
.mooc-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 200%;
    height: 200%;
    background: repeating-conic-gradient(
        from 0deg,
        rgba(212, 175, 55, 0.03) 0deg 5deg,
        transparent 5deg 10deg
    );
    pointer-events: none;
}

/* Bordure géométrique */
.mooc-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 20px;
    background: 
        linear-gradient(135deg, var(--or-deco) 10px, transparent 10px),
        linear-gradient(-135deg, var(--or-deco) 10px, transparent 10px);
    background-size: 20px 20px;
    background-position: 0 0, 10px 0;
}

.header-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.mooc-title {
    font-family: var(--deco-title);
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--or-deco);
    text-transform: uppercase;
    text-shadow: 
        2px 2px 0 var(--bordeaux),
        4px 4px 12px rgba(212, 175, 55, 0.5);
    margin-bottom: 1rem;
}

.mooc-subtitle {
    font-family: var(--deco-accent);
    font-size: 1.5rem;
    color: var(--creme);
    font-weight: 300;
    letter-spacing: 0.2em;
}

/* Navigation fil d'Ariane */
.breadcrumb {
    position: absolute;
    top: 1rem;
    left: 2rem;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--or-deco);
    text-decoration: none;
    transition: all 0.3s;
}

.breadcrumb a:hover {
    color: var(--creme);
}

.breadcrumb span {
    color: var(--creme);
    margin: 0 0.5rem;
}

/* ============================================
   NAVIGATION SÉANCES
   ============================================ */

.seances-nav {
    background: linear-gradient(135deg, #1a1a1a 0%, var(--bleu-nuit) 100%);
    padding: 2rem;
    margin: 2rem auto;
    max-width: 1400px;
    border: 2px solid var(--or-deco);
    border-radius: 0;
    position: relative;
}

/* Coins Art Déco */
.seances-nav::before,
.seances-nav::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 30px;
    border: 3px solid var(--or-deco);
}

.seances-nav::before {
    top: -2px;
    left: -2px;
    border-right: none;
    border-bottom: none;
}

.seances-nav::after {
    bottom: -2px;
    right: -2px;
    border-left: none;
    border-top: none;
}

.nav-title {
    text-align: center;
    font-family: var(--deco-accent);
    font-size: 1.5rem;
    color: var(--or-deco);
    margin-bottom: 1.5rem;
    letter-spacing: 0.15em;
}

.seances-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.seance-link {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(26, 26, 46, 0.3) 100%);
    padding: 1.5rem;
    text-decoration: none;
    color: var(--creme);
    border: 1px solid var(--or-deco);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.seance-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.2), transparent);
    transition: left 0.5s;
}

.seance-link:hover::before {
    left: 100%;
}

.seance-link:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2) 0%, rgba(26, 26, 46, 0.5) 100%);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.3);
}

.seance-number {
    font-family: var(--deco-title);
    font-size: 2.5rem;
    color: var(--or-deco);
    font-weight: 700;
    display: block;
    margin-bottom: 0.5rem;
}

.seance-name {
    font-family: var(--deco-accent);
    font-size: 1.1rem;
    font-weight: 500;
    display: block;
    margin-bottom: 0.5rem;
}

.seance-theme {
    font-size: 0.85rem;
    color: rgba(245, 240, 232, 0.7);
    font-style: italic;
}

/* ============================================
   MAIN CONTAINER
   ============================================ */

.mooc-container {
    max-width: 1200px;
    margin: 3rem auto;
    padding: 0 2rem;
}

/* Section avec cadre Art Déco */
.deco-section {
    background: linear-gradient(135deg, #1a1a1a 0%, var(--bleu-nuit) 100%);
    padding: 3rem;
    margin-bottom: 3rem;
    border: 2px solid var(--or-deco);
    position: relative;
}

/* Motifs géométriques coins */
.deco-section::before {
    content: '◆';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    color: var(--or-deco);
    background: var(--noir-profond);
    padding: 0 1rem;
}

.section-title {
    font-family: var(--deco-title);
    font-size: 2.5rem;
    color: var(--or-deco);
    text-align: center;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-content {
    color: var(--creme);
    line-height: 1.8;
}

/* ============================================
   ACCORDÉONS CORPUS
   ============================================ */

.accordion {
    margin: 2rem 0;
}

.accordion-item {
    background: rgba(26, 26, 46, 0.5);
    border: 1px solid var(--or-deco);
    margin-bottom: 1rem;
}

.accordion-header {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1));
}

.accordion-header:hover {
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.2));
}

.accordion-title {
    font-family: var(--deco-accent);
    font-size: 1.3rem;
    color: var(--or-deco);
}

.accordion-icon {
    font-size: 1.5rem;
    color: var(--or-deco);
    transition: transform 0.3s;
}

.accordion-item.active .accordion-icon {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.accordion-item.active .accordion-content {
    max-height: 5000px;
}

.accordion-body {
    padding: 2rem;
    border-top: 1px solid rgba(212, 175, 55, 0.3);
}

/* ============================================
   LIENS & BOUTONS
   ============================================ */

a {
    color: var(--or-deco);
    text-decoration: none;
    transition: all 0.3s;
    border-bottom: 1px solid transparent;
}

a:hover {
    color: var(--creme);
    border-bottom-color: var(--or-deco);
}

.deco-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--or-deco) 0%, #b8941f 100%);
    color: var(--noir-profond);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 2px solid var(--or-deco);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.deco-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.deco-button:hover::before {
    width: 300px;
    height: 300px;
}

.deco-button:hover {
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.6);
    transform: translateY(-2px);
}

/* ============================================
   QUIZ INTERACTIFS
   ============================================ */

.quiz-container {
    background: rgba(26, 26, 46, 0.6);
    padding: 2rem;
    border-left: 4px solid var(--or-deco);
    margin: 2rem 0;
}

.quiz-question {
    font-family: var(--deco-accent);
    font-size: 1.2rem;
    color: var(--or-deco);
    margin-bottom: 1.5rem;
}

.quiz-options {
    list-style: none;
}

.quiz-option {
    padding: 1rem;
    margin: 0.5rem 0;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.quiz-option:hover {
    background: rgba(212, 175, 55, 0.2);
    transform: translateX(10px);
}

.quiz-option.correct {
    background: rgba(45, 80, 22, 0.5);
    border-color: var(--vert-emeraude);
}

.quiz-option.incorrect {
    background: rgba(109, 31, 31, 0.5);
    border-color: var(--bordeaux);
}

/* ============================================
   BADGES & TAGS
   ============================================ */

.tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(212, 175, 55, 0.2);
    border: 1px solid var(--or-deco);
    font-size: 0.85rem;
    margin: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   FOOTER
   ============================================ */

.mooc-footer {
    background: var(--noir-profond);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 3px solid var(--or-deco);
    margin-top: 4rem;
}

.footer-nav {
    margin-bottom: 2rem;
}

.footer-nav a {
    margin: 0 1rem;
    color: var(--or-deco);
    font-family: var(--deco-accent);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .mooc-title {
        font-size: 2.5rem;
    }
    
    .seances-grid {
        grid-template-columns: 1fr;
    }
    
    .mooc-container {
        padding: 0 1rem;
    }
    
    .deco-section {
        padding: 2rem 1rem;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.gold-shimmer {
    background: linear-gradient(
        90deg,
        var(--or-deco) 0%,
        #f0e68c 50%,
        var(--or-deco) 100%
    );
    background-size: 1000px 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 3s infinite linear;
}