/* ============================================================
   courses-styles.css — Styles pour courses, matiere, seance
   ============================================================ */

/* ── Vues switchables ──────────────────────────────────────── */
.courses-view        { display: none; }
.courses-view.active-view { display: block; }

/* ── Hero courses ──────────────────────────────────────────── */
.courses-hero {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 60%, #60a5fa 100%);
    color: white;
    padding: 4rem 1.5rem 3rem;
    text-align: center;
}
.courses-hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0 0 .75rem;
}
.courses-hero-sub {
    font-size: 1.1rem;
    opacity: .85;
    margin: 0;
}

/* ── Grille diplômes ───────────────────────────────────────── */
.diplomes-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}
.diplomes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
}
.diplome-card {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    padding: 2rem 1.5rem;
    cursor: pointer;
    transition: all .25s;
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}
.diplome-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #1e40af, #3b82f6);
    opacity: 0;
    transition: opacity .25s;
}
.diplome-card:hover { border-color: #3b82f6; transform: translateY(-3px); box-shadow: 0 8px 24px rgba(59,130,246,.2); }
.diplome-card:hover::before { opacity: .05; }
.diplome-card:hover .diplome-icon { background: #1e40af; color: white; }
.diplome-icon {
    width: 56px; height: 56px;
    background: #eff6ff;
    color: #1e40af;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    transition: all .25s;
}
.diplome-label { font-size: 1.3rem; font-weight: 800; color: #1f2937; }
.diplome-desc  { font-size: .8rem; color: #6b7280; margin-top: .2rem; }
.diplome-arrow { margin-left: auto; color: #9ca3af; transition: transform .25s; }
.diplome-card:hover .diplome-arrow { transform: translateX(4px); color: #3b82f6; }

/* ── Header vue matières ───────────────────────────────────── */
.matieres-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #e5e7eb;
    background: white;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0,0,0,.06);
}
.matieres-header h2 { margin: 0; font-size: 1.4rem; color: #1f2937; }
.matieres-container { max-width: 1100px; margin: 0 auto; padding: 2rem 1.5rem; }

/* ── Grille matières ───────────────────────────────────────── */
.matieres-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}
.matiere-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,.08);
    cursor: pointer;
    transition: all .25s;
    display: flex;
    flex-direction: column;
}
.matiere-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,.14); }

.mc-cover {
    height: 120px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding: 1rem;
    position: relative;
}
.mc-initials {
    font-size: 2.5rem;
    font-weight: 900;
    color: rgba(255,255,255,.25);
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%,-50%);
    pointer-events: none;
    letter-spacing: -2px;
}
.mc-diplome {
    background: rgba(255,255,255,.2);
    color: white;
    font-size: .75rem;
    font-weight: 700;
    padding: .3rem .8rem;
    border-radius: 20px;
    backdrop-filter: blur(6px);
}
.mc-body  { padding: 1.25rem; flex: 1; }
.mc-niveau {
    display: inline-block;
    padding: .25rem .75rem;
    border-radius: 20px;
    font-size: .75rem;
    font-weight: 700;
    margin-bottom: .75rem;
}
.mc-titre { font-size: 1.1rem; font-weight: 700; color: #1f2937; margin: 0 0 .5rem; line-height: 1.3; }
.mc-desc  { font-size: .875rem; color: #6b7280; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.mc-footer {
    padding: .875rem 1.25rem;
    border-top: 1px solid #f3f4f6;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: .8rem;
    color: #6b7280;
}
.mc-footer i { margin-right: .3rem; color: #9ca3af; }
.mc-cta { margin-left: auto; color: #1e40af; font-weight: 700; font-size: .8rem; }

/* ── Boutons retour ────────────────────────────────────────── */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    background: white;
    border: 2px solid #e5e7eb;
    padding: .5rem 1.1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    color: #374151;
    transition: all .2s;
    text-decoration: none;
    font-size: .9rem;
}
.back-btn:hover { border-color: #3b82f6; color: #1e40af; }
.back-link {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    color: rgba(255,255,255,.85);
    text-decoration: none;
    font-weight: 600;
    font-size: .9rem;
    margin-bottom: 1.25rem;
    transition: color .2s;
}
.back-link:hover { color: white; }

.back-btn-empty {
    margin-top: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    background: #1e40af;
    color: white;
    padding: .75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    font-weight: 700;
    font-size: .95rem;
    transition: background .2s;
}
.back-btn-empty:hover { background: #1d4ed8; }

/* ── États vides / loading ─────────────────────────────────── */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 50vh;
    color: #6b7280;
    gap: 1rem;
}
.loading-state i { font-size: 3rem; color: #3b82f6; }

.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 50vh;
    color: #6b7280;
    gap: 1rem;
    text-align: center;
}
.error-state i { font-size: 3rem; color: #ef4444; }

.empty-courses {
    text-align: center;
    padding: 4rem 2rem;
    color: #9ca3af;
}
.empty-courses i { font-size: 4rem; margin-bottom: 1.5rem; display: block; color: #d1d5db; }
.empty-courses p  { font-size: 1.2rem; font-weight: 600; color: #6b7280; margin-bottom: .5rem; }
.empty-courses small { color: #9ca3af; }

/* ── Hero matière ──────────────────────────────────────────── */
.matiere-hero {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 3rem 2rem;
}
.matiere-hero-content { max-width: 900px; margin: 0 auto; }
.matiere-meta { display: flex; gap: .75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.diplome-badge, .niveau-badge {
    display: inline-block;
    padding: .35rem 1rem;
    border-radius: 20px;
    font-size: .85rem;
    font-weight: 700;
}
.diplome-badge { background: rgba(255,255,255,.2); color: white; }
.niveau-badge  { background: rgba(255,255,255,.15); color: rgba(255,255,255,.9); }

.matiere-hero h1 { font-size: 2.2rem; font-weight: 800; margin: 0 0 .75rem; line-height: 1.2; }
.matiere-desc    { font-size: 1rem; opacity: .85; margin: 0 0 1.5rem; line-height: 1.6; }
.matiere-stats   { display: flex; gap: 2rem; font-size: .95rem; opacity: .9; flex-wrap: wrap; }
.matiere-stats i { margin-right: .4rem; }

/* ── Corps matière (sidebar + main) ────────────────────────── */
.matiere-body {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 0;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    align-items: start;
}
.sequences-sidebar {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,.07);
    padding: 1.25rem;
    position: sticky;
    top: 80px;
}
.sidebar-title {
    font-size: .85rem;
    font-weight: 700;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: 1rem;
}
.sidebar-title i { margin-right: .4rem; }
.seq-nav-item {
    padding: .6rem .75rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: .875rem;
    color: #374151;
    transition: all .2s;
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: .25rem;
}
.seq-nav-item i { font-size: .65rem; color: #9ca3af; flex-shrink: 0; }
.seq-nav-item:hover  { background: #eff6ff; color: #1e40af; }
.seq-nav-item.active { background: #1e40af; color: white; }
.seq-nav-item.active i { color: rgba(255,255,255,.7); }

.sequences-main { padding-left: 1.5rem; }

/* ── Blocs séquences ───────────────────────────────────────── */
.sequence-block {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,.07);
    margin-bottom: 1.5rem;
    overflow: hidden;
}
.sequence-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    transition: background .2s;
    border-bottom: 1px solid #f3f4f6;
}
.sequence-header:hover { background: #f9fafb; }
.seq-info { flex: 1; }
.seq-num  { font-size: .8rem; font-weight: 700; color: #3b82f6; text-transform: uppercase; letter-spacing: .05em; }
.seq-title { font-size: 1.1rem; font-weight: 700; color: #1f2937; margin: .25rem 0 0; }
.seq-toggle-btn {
    background: #f3f4f6;
    border: none;
    width: 36px; height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    transition: all .2s;
    flex-shrink: 0;
}
.seq-toggle-btn:hover { background: #e5e7eb; }

/* ── Items séances ─────────────────────────────────────────── */
.seances-list { padding: .5rem; }
.seance-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: .875rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all .2s;
    margin-bottom: .25rem;
}
.seance-item:hover { background: #eff6ff; }
.seance-item-icon {
    width: 40px; height: 40px;
    background: #eff6ff;
    color: #1e40af;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .85rem;
    flex-shrink: 0;
    transition: all .2s;
}
.seance-item:hover .seance-item-icon { background: #1e40af; color: white; }
.seance-item-info { flex: 1; }
.seance-num { font-size: .75rem; font-weight: 700; color: #3b82f6; }
.seance-item-info h4 { font-size: .95rem; font-weight: 600; color: #1f2937; margin: .2rem 0 .25rem; }
.has-pdf { font-size: .75rem; color: #dc2626; font-weight: 600; }
.has-pdf i { margin-right: .3rem; }
.seance-arrow { color: #9ca3af; font-size: .85rem; transition: transform .2s; }
.seance-item:hover .seance-arrow { transform: translateX(3px); color: #1e40af; }

.empty-seances {
    padding: 2rem;
    text-align: center;
    color: #9ca3af;
}
.empty-seances i { font-size: 2rem; margin-bottom: .75rem; display: block; }
.empty-seances p  { font-size: .9rem; margin: 0; }

/* ── Page séance (lecture) ─────────────────────────────────── */
.seance-page { min-height: 100vh; background: #f9fafb; }
.seance-header {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 3rem 1.5rem 2.5rem;
}
.seance-header-content { max-width: 860px; margin: 0 auto; }
.seance-meta { display: flex; gap: .75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.seance-badge {
    background: rgba(255,255,255,.2);
    padding: .35rem 1rem;
    border-radius: 20px;
    font-size: .85rem;
    font-weight: 700;
}
.seq-badge {
    background: rgba(255,255,255,.12);
    padding: .35rem 1rem;
    border-radius: 20px;
    font-size: .85rem;
    font-weight: 600;
    color: rgba(255,255,255,.85);
}
.seance-title { font-size: 2rem; font-weight: 800; margin: 0; line-height: 1.2; }

.seance-main { max-width: 860px; margin: 0 auto; padding: 2rem 1.5rem; }

/* PDF */
.pdf-section { margin-bottom: 1.5rem; }
.pdf-card {
    background: linear-gradient(135deg, #dc2626, #ef4444);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    color: white;
    flex-wrap: wrap;
}
.pdf-icon {
    width: 56px; height: 56px;
    background: rgba(255,255,255,.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
}
.pdf-info { flex: 1; }
.pdf-info h4 { margin: 0 0 .25rem; font-size: 1rem; }
.pdf-info p  { margin: 0; font-size: .875rem; opacity: .9; }
.pdf-btn {
    background: white;
    color: #dc2626;
    padding: .65rem 1.25rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: .9rem;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    transition: all .2s;
    white-space: nowrap;
}
.pdf-btn:hover { transform: scale(1.04); box-shadow: 0 4px 12px rgba(0,0,0,.2); }

/* Contenu séance */
.seance-content-card {
    background: white;
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 4px 6px rgba(0,0,0,.07);
    margin-bottom: 2rem;
    overflow-x: auto;
}
#seanceContent h1 { font-size: 1.8rem; color: #1f2937; border-bottom: 3px solid #3b82f6; padding-bottom: .5rem; margin-top: 2rem; }
#seanceContent h2 { font-size: 1.4rem; color: #1e40af; margin-top: 1.75rem; }
#seanceContent h3 { font-size: 1.15rem; color: #374151; margin-top: 1.5rem; }
#seanceContent p  { line-height: 1.8; color: #374151; margin-bottom: 1rem; }
#seanceContent ul, #seanceContent ol { margin-left: 1.5rem; margin-bottom: 1rem; line-height: 1.8; }
#seanceContent li { margin-bottom: .4rem; color: #374151; }
#seanceContent img { max-width: 100%; border-radius: 8px; margin: 1.5rem 0; box-shadow: 0 4px 8px rgba(0,0,0,.1); }
#seanceContent table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; display: block; overflow-x: auto; }
#seanceContent th, #seanceContent td { padding: .75rem 1rem; text-align: left; border: 1px solid #e5e7eb; }
#seanceContent th { background: #f3f4f6; font-weight: 700; }
#seanceContent code { background: #f3f4f6; padding: .2rem .5rem; border-radius: 4px; font-family: monospace; color: #dc2626; }
#seanceContent pre  { background: #1f2937; color: #f9fafb; padding: 1.5rem; border-radius: 8px; overflow-x: auto; }
#seanceContent blockquote { border-left: 4px solid #3b82f6; background: #eff6ff; padding: 1rem 1.5rem; border-radius: 0 8px 8px 0; margin: 1.5rem 0; }

/* Navigation séances */
.seance-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
}
.nav-btn {
    background: white;
    border: 2px solid #e5e7eb;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    color: #374151;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    transition: all .2s;
    flex: 1;
    justify-content: center;
    font-size: .95rem;
}
.nav-btn:hover:not(.disabled) { border-color: #3b82f6; color: #1e40af; transform: translateY(-2px); }
.nav-btn.disabled { opacity: .4; cursor: not-allowed; pointer-events: none; }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .matiere-body { grid-template-columns: 1fr; }
    .sequences-sidebar { position: static; margin-bottom: 1.5rem; }
    .sequences-main { padding-left: 0; }
}

@media (max-width: 768px) {
    .courses-hero-title { font-size: 1.8rem; }
    .diplomes-grid { grid-template-columns: 1fr; }
    .diplome-card { padding: 1.25rem; }
    .matieres-header { padding: 1rem; flex-wrap: wrap; }
    .matiere-hero { padding: 2rem 1rem; }
    .matiere-hero h1 { font-size: 1.6rem; }
    .matiere-body { padding: 0 1rem; }
    .seance-header { padding: 2rem 1rem; }
    .seance-title { font-size: 1.4rem; }
    .seance-main { padding: 1rem; }
    .seance-content-card { padding: 1.25rem; }
    .seance-nav { flex-direction: column; }
    .pdf-card { flex-direction: column; text-align: center; }
    .pdf-btn { width: 100%; justify-content: center; }
}

/* ── Filtre par niveau ───────────────────────────────────── */
.niveau-btn {
    display: inline-flex; align-items: center; gap: .45rem;
    padding: .5rem 1.1rem; border: 2px solid #e2e8f0; border-radius: 30px;
    background: white; color: #374151; font-weight: 700; font-size: .82rem;
    cursor: pointer; transition: all .2s; white-space: nowrap;
}
.niveau-btn:hover { border-color: #3b82f6; color: #1e40af; background: #eff6ff; }
.niveau-btn.active { background: #1e40af; color: white; border-color: #1e40af; }
.niveau-btn[data-niveau="Débutant"].active     { background: #065f46; border-color: #065f46; }
.niveau-btn[data-niveau="Intermédiaire"].active { background: #92400e; border-color: #92400e; }
.niveau-btn[data-niveau="Avancé"].active        { background: #991b1b; border-color: #991b1b; }
.nv-count {
    background: rgba(255,255,255,.3); color: inherit;
    padding: .1rem .45rem; border-radius: 10px; font-size: .75rem; font-weight: 800;
}
.niveau-btn:not(.active) .nv-count { background: #f1f5f9; color: #64748b; }

/* ── Vue Niveaux ─────────────────────────────────────────── */
.niveaux-container {
    max-width: 860px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}
.niveaux-subtitle {
    text-align: center;
    color: #64748b;
    font-size: 1rem;
    margin-bottom: 2rem;
}
.niveaux-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
}
.niveau-card {
    background: white;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(0,0,0,.08);
    padding: 1.75rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    cursor: pointer;
    transition: transform .2s, box-shadow .2s;
    border-top: 4px solid #1e40af;
}
.niveau-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,.14);
}
.nc-icon {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; flex-shrink: 0;
}
.nc-body { flex: 1; }
.nc-titre { font-size: 1.15rem; font-weight: 800; margin: 0 0 .25rem; }
.nc-desc  { font-size: .82rem; color: #64748b; margin: 0 0 .5rem; }
.nc-count {
    font-size: .75rem; font-weight: 700; background: #f1f5f9;
    color: #64748b; padding: .2rem .65rem; border-radius: 20px;
}
.nc-arrow { font-size: 1.1rem; flex-shrink: 0; opacity: .6; }
.niveau-card:hover .nc-arrow { opacity: 1; }

@media (max-width: 600px) {
    .niveaux-grid { grid-template-columns: 1fr; }
}

/* Retirer les anciens styles niveau-btn devenus inutiles */