/* ==========================================================================
   SITE PUBLIC - Filières, tarifs & pré-inscription
   Tokens repris de la charte graphique ELTC Consulting
   ========================================================================== */

:root {
    --color-primary: #1E3A8A;
    --color-primary-dark: #172554;
    --color-accent: #0EA5E9;
    --color-accent-hover: #0284C7;
    --color-text-main: #0F172A;
    --color-text-body: #334155;
    --color-text-muted: #64748B;
    --color-bg-app: #F8FAFC;
    --color-bg-surface: #FFFFFF;
    --color-bg-secondary: #F1F5F9;
    --color-border: #E2E8F0;
    --color-success: #10B981;
    --color-danger: #EF4444;
    --color-selected: #F0F9FF;

    --font-heading: 'Montserrat', 'Poppins', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius: 8px;
    --wrap: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-padding-top: 88px; }

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-body);
    background: var(--color-bg-surface);
}

h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    line-height: 1.2;
    margin: 0;
}

a { color: var(--color-primary); }
a:hover { color: var(--color-accent-hover); }

:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.wrap {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 16px;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 100;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: #FFFFFF;
    border-radius: var(--radius);
}
.skip-link:focus { top: 12px; }

/* --- Boutons ------------------------------------------------------------ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.25rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.btn-primary { background: var(--color-primary); color: #FFFFFF; }
.btn-primary:hover { background: var(--color-accent); color: #FFFFFF; }
.btn-secondary { background: var(--color-bg-secondary); color: var(--color-text-body); border-color: var(--color-border); }
.btn-secondary:hover { border-color: var(--color-accent); color: var(--color-primary); }
.btn-light { background: #FFFFFF; color: var(--color-primary); }
.btn-light:hover { background: var(--color-accent); color: #FFFFFF; }
.btn-outline-light { color: #FFFFFF; border-color: rgba(255, 255, 255, 0.55); }
.btn-outline-light:hover { border-color: #FFFFFF; color: #FFFFFF; background: rgba(255, 255, 255, 0.08); }

/* --- En-tête -------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 72px;
}
.brand img { display: block; height: 44px; width: auto; }
.site-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.92rem;
    font-weight: 500;
}
.site-nav a { color: var(--color-text-body); text-decoration: none; }
.site-nav a:hover { color: var(--color-primary); }
.site-nav .nav-staff {
    padding: 0.45rem 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-primary);
}
.site-nav .nav-staff:hover { border-color: var(--color-accent); }

/* --- Bandeau d'accueil ---------------------------------------------------- */
.hero {
    background: var(--color-primary);
    color: #FFFFFF;
    padding: 4.5rem 0 4rem;
}
.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 3rem;
    align-items: end;
}
.hero h1 {
    color: #FFFFFF;
    font-size: clamp(2.1rem, 4.6vw, 3.4rem);
    font-weight: 700;
    letter-spacing: -0.01em;
    max-width: 14ch;
}
.hero .lead {
    margin: 1.25rem 0 2rem;
    max-width: 56ch;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.86);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.hero-facts {
    margin: 0;
    display: grid;
    gap: 1.25rem;
    padding-left: 1.5rem;
    border-left: 3px solid var(--color-accent);
}
.hero-facts dt {
    font-weight: 600;
    font-size: 0.9rem;
    color: #FFFFFF;
}
.hero-facts dt i { color: var(--color-accent); margin-right: 0.35rem; }
.hero-facts dd {
    margin: 0.15rem 0 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.95rem;
}
.hero-facts a { color: #FFFFFF; }
.hero-facts a:hover { color: var(--color-accent); }

/* --- Sections ------------------------------------------------------------- */
.section { padding: 4.5rem 0; }
.section-muted { background: var(--color-bg-app); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.section-head { max-width: 62ch; margin-bottom: 2rem; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); font-weight: 700; }
.section-head p { margin: 0.6rem 0 0; color: var(--color-text-muted); }

/* --- Liste des filières & tarifs (élément signature) --------------------- */
.catalog {
    list-style: none;
    margin: 0;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}
.catalog-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 1.5rem;
    padding: 1.4rem 1.5rem;
    border-left: 4px solid transparent;
    background: var(--color-bg-surface);
}
.catalog-row + .catalog-row { border-top: 1px solid var(--color-border); }
.catalog-row.is-selected {
    background: var(--color-selected);
    border-left-color: var(--color-accent);
}
.catalog-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-main);
}
.catalog-info p { margin: 0.3rem 0 0; color: var(--color-text-muted); font-size: 0.93rem; max-width: 60ch; }
.catalog-price {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(1.4rem, 2.6vw, 1.9rem);
    color: var(--color-primary);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
    text-align: right;
}
.catalog-price.is-on-request {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
}
.catalog-row.is-selected .btn-choose { background: var(--color-accent); }

.empty-state {
    padding: 2rem;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg-app);
}
.empty-state p { margin: 0.25rem 0; }

/* --- Étapes (séquence réelle : numérotation) ------------------------------ */
.steps {
    list-style: none;
    counter-reset: etape;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
}
.steps li { counter-increment: etape; }
.steps li::before {
    content: counter(etape);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    margin-bottom: 0.9rem;
    border-radius: 50%;
    background: var(--color-primary);
    color: #FFFFFF;
    font-family: var(--font-heading);
    font-weight: 700;
}
.steps h3 { font-size: 1.05rem; font-weight: 600; color: var(--color-text-main); }
.steps p { margin: 0.4rem 0 0; color: var(--color-text-muted); }

/* --- Pré-inscription ------------------------------------------------------ */
.form-grid {
    display: grid;
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
}
.choice-ticket {
    position: sticky;
    top: 96px;
    padding: 1.75rem;
    border-radius: var(--radius);
    background: var(--color-primary);
    color: #FFFFFF;
}
.ticket-label { font-size: 0.85rem; font-weight: 600; color: var(--color-accent); }
.ticket-title {
    margin-top: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.3;
}
.ticket-price {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}
.ticket-note, .ticket-contact { margin: 1rem 0 0; font-size: 0.9rem; color: rgba(255, 255, 255, 0.78); }
.ticket-contact a { color: #FFFFFF; white-space: nowrap; }
.ticket-contact a:hover { color: var(--color-accent); }

.form-card h2 { font-size: 1.6rem; font-weight: 700; }
.form-intro { margin: 0.4rem 0 1.5rem; color: var(--color-text-muted); font-size: 0.92rem; }
.form-alert {
    margin-bottom: 1.25rem;
    padding: 0.8rem 1rem;
    border-radius: var(--radius);
    border: 1px solid #FECACA;
    background: #FEF2F2;
    color: #991B1B;
    font-size: 0.93rem;
}
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.field { margin-bottom: 1.1rem; }
.field label { display: block; margin-bottom: 0.35rem; font-weight: 500; font-size: 0.92rem; color: var(--color-text-main); }
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea {
    width: 100%;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg-surface);
    font: inherit;
    font-size: 0.97rem;
    color: var(--color-text-main);
}
.field input:focus, .field select:focus, .field textarea:focus {
    border-color: var(--color-accent);
    outline: 3px solid rgba(14, 165, 233, 0.25);
    outline-offset: 0;
}
.field textarea { resize: vertical; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--color-danger); }
.field-error { margin: 0.35rem 0 0; color: #B91C1C; font-size: 0.87rem; }
.field-check { display: grid; grid-template-columns: auto 1fr; gap: 0.6rem; align-items: start; }
.field-check input { margin-top: 0.3rem; width: 1.05rem; height: 1.05rem; accent-color: var(--color-primary); }
.field-check label { font-weight: 400; color: var(--color-text-body); }
.field-check .field-error { grid-column: 2; }
.btn-submit { width: 100%; padding: 0.85rem 1.25rem; font-size: 1rem; }

.hp-field { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.success-panel { padding: 0.5rem 0; }
.success-panel > i { font-size: 2.4rem; color: var(--color-success); }
.success-panel h2 { margin-top: 0.5rem; }
.success-panel p { max-width: 60ch; }

/* --- Pied de page --------------------------------------------------------- */
.site-footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.78);
    padding: 3.5rem 0 1.5rem;
    font-size: 0.93rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 2rem;
}
.footer-logo { height: 56px; width: auto; margin-bottom: 0.75rem; }
.site-footer h2 { color: #FFFFFF; font-size: 1rem; font-weight: 600; margin-bottom: 0.6rem; }
.site-footer p { margin: 0; }
.site-footer a { color: #FFFFFF; }
.site-footer a:hover { color: var(--color-accent); }
.footer-legal {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
    margin-top: 2.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

/* --- Responsive ----------------------------------------------------------- */
@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .form-grid { grid-template-columns: 1fr; }
    .choice-ticket { position: static; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
    .site-nav a:not(.nav-staff) { display: none; }
    .hero { padding: 3rem 0; }
    .section { padding: 3.25rem 0; }
    .catalog-row {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 0.75rem 1rem;
        padding: 1.15rem 1rem;
    }
    .catalog-info { grid-column: 1 / -1; }
    .catalog-price { text-align: left; }
    .steps { grid-template-columns: 1fr; gap: 1.5rem; }
    .field-row { grid-template-columns: 1fr; gap: 0; }
    .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .btn { transition: none; }
}