/* ═══════════════════════════════════════════════════════════
   Programme Séminaire - Main Stylesheet
   Mobile-first / Palette: Teal + Gold + Cream
   ═══════════════════════════════════════════════════════════ */

/* ─── CSS Variables (overridable via ACF) ─────────────────── */
:root {
    --color-primary: #6BA8A4;
    --color-primary-dark: #4E8E8A;
    --color-primary-light: #A8D5D2;
    --color-accent: #D4A843;
    --color-accent-light: #F0D68A;
    --color-dark: #1A2B2A;
    --color-text: #2D3436;
    --color-text-light: #636E72;
    --color-cream: #FAF6F0;
    --color-white: #FFFFFF;
    --color-flash: #E74C3C;

    --font-heading: 'Bebas Neue', 'Arial Narrow', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-accent: 'Playfair Display', Georgia, serif;

    --radius: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);

    --container-max: 900px;
    --spacing-section: 3rem;
}

/* ─── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-cream);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ─── Flash Info Banner ───────────────────────────────────── */
.flash-banner {
    background: var(--color-flash);
    color: var(--color-white);
    text-align: center;
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    position: relative;
    z-index: 100;
    animation: flashPulse 3s ease-in-out infinite;
}

.flash-banner p {
    margin: 0;
}

.flash-banner a {
    color: var(--color-white);
    text-decoration: underline;
}

@keyframes flashPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.9; }
}

/* ─── Header / Hero ───────────────────────────────────────── */
.site-header {
    position: relative;
    overflow: hidden;
    background: var(--color-primary);
    text-align: center;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(0,0,0,0.1) 0%,
        rgba(0,0,0,0.3) 100%
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    padding: 2.5rem 1.25rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.site-logo {
    max-width: 180px;
    width: 100%;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.site-logo img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
}

.hero-text {
    color: var(--color-white);
    max-width: 600px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    letter-spacing: 0.06em;
    line-height: 1.1;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-family: var(--font-accent);
    font-style: italic;
    font-size: 1.1rem;
    opacity: 0.95;
    text-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

/* ─── Section Titles ──────────────────────────────────────── */
.section-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    letter-spacing: 0.08em;
    color: var(--color-white);
    background: var(--color-primary);
    text-align: center;
    padding: 1rem 1.25rem;
    margin: 0;
}

/* ─── Presentation Block ──────────────────────────────────── */
.presentation {
    background: var(--color-white);
    padding: var(--spacing-section) 1.25rem;
    text-align: center;
}

.presentation-content {
    max-width: var(--container-max);
    margin: 0 auto;
}

.presentation-content h2,
.presentation-content h3 {
    font-family: var(--font-accent);
    color: var(--color-primary-dark);
    margin-bottom: 1rem;
}

.presentation-content p {
    color: var(--color-text-light);
    font-size: 1.05rem;
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
}

/* ─── Programme / Accordions ──────────────────────────────── */
.programme-section {
    padding-bottom: var(--spacing-section);
    background: var(--color-cream);
}

.accordion-list {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 1.5rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.accordion-item {
    background: var(--color-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease;
}

.accordion-item:hover {
    box-shadow: var(--shadow-md);
}

.accordion-item.is-open {
    box-shadow: var(--shadow-md);
}

.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.5rem;
    cursor: pointer;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    width: 100%;
    text-align: left;
    font-family: var(--font-heading);
    font-size: 1.3rem;
    letter-spacing: 0.05em;
    transition: background 0.3s ease;
    gap: 1rem;
}

.accordion-header:hover {
    background: var(--color-primary-dark);
}

.accordion-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    position: relative;
    transition: transform 0.3s ease;
}

.accordion-icon::before,
.accordion-icon::after {
    content: '';
    position: absolute;
    background: var(--color-white);
    border-radius: 2px;
    transition: transform 0.3s ease;
}

.accordion-icon::before {
    width: 100%;
    height: 3px;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}

.accordion-icon::after {
    width: 3px;
    height: 100%;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
}

.accordion-item.is-open .accordion-icon::after {
    transform: translateX(-50%) rotate(90deg);
    opacity: 0;
}

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

.accordion-content {
    padding: 1.5rem;
    color: var(--color-text);
    line-height: 1.8;
}

/* WYSIWYG content styling */
.accordion-content h3,
.accordion-content h4 {
    margin: 0.8rem 0 0.3rem;
    line-height: 1.5;
}

.accordion-content h3 {
    font-family: var(--font-accent);
    font-size: 1.2rem;
    color: var(--color-primary-dark);
}

.accordion-content h4 {
    font-size: 1rem;
    font-weight: 400;
}

.accordion-content h4 strong span,
.accordion-content strong span[style*="color"] {
    color: var(--color-primary-dark) !important;
    font-weight: 600;
}

.accordion-content img {
    border-radius: var(--radius);
    margin: 1rem auto;
    box-shadow: var(--shadow-sm);
}

.accordion-content a {
    color: var(--color-accent);
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.accordion-content a:hover {
    border-bottom-color: var(--color-accent);
}

/* Accordion badge (day number) */
.accordion-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.85rem;
    flex-shrink: 0;
    margin-right: 0.25rem;
}

.accordion-title-text {
    flex: 1;
}

/* ─── Contact Section ─────────────────────────────────────── */
.contact-section {
    background: var(--color-white);
    padding: var(--spacing-section) 1.25rem;
}

.contact-grid {
    max-width: var(--container-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.contact-card {
    background: var(--color-cream);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--color-white);
}

.contact-name {
    font-family: var(--font-accent);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 0.25rem;
}

.contact-role {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.contact-phone {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    letter-spacing: 0.04em;
    color: var(--color-primary-dark);
}

.contact-phone a {
    color: var(--color-primary-dark);
}

.contact-phone a:hover {
    color: var(--color-accent);
}

/* Address card */
.address-card {
    grid-column: 1 / -1;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
}

.address-card .contact-icon {
    background: rgba(255,255,255,0.2);
}

.address-title {
    font-family: var(--font-accent);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.address-text {
    opacity: 0.9;
    line-height: 1.6;
}

/* ─── Footer ──────────────────────────────────────────────── */
.site-footer {
    background: var(--color-dark);
    color: rgba(255,255,255,0.5);
    text-align: center;
    padding: 1.5rem;
    font-size: 0.8rem;
}

/* ─── Animations ──────────────────────────────────────────── */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.stagger-in > * {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-in.is-visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-in.is-visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-in.is-visible > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-in.is-visible > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-in.is-visible > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-in.is-visible > *:nth-child(6) { transition-delay: 0.3s; }
.stagger-in.is-visible > *:nth-child(7) { transition-delay: 0.35s; }
.stagger-in.is-visible > *:nth-child(8) { transition-delay: 0.4s; }

.stagger-in.is-visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Responsive: Tablet ──────────────────────────────────── */
@media (min-width: 600px) {
    :root {
        --spacing-section: 4rem;
    }

    .hero-content {
        padding: 3.5rem 2rem 3rem;
    }

    .site-logo {
        max-width: 220px;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .section-title {
        font-size: 2.5rem;
        padding: 1.25rem 2rem;
    }

    .accordion-header {
        font-size: 1.5rem;
        padding: 1.25rem 2rem;
    }

    .accordion-content {
        padding: 2rem;
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ─── Responsive: Desktop ─────────────────────────────────── */
@media (min-width: 960px) {
    .hero-content {
        padding: 4rem 2rem 3.5rem;
    }

    .site-logo {
        max-width: 250px;
    }

    .hero-title {
        font-size: 4rem;
    }

    .section-title {
        font-size: 3rem;
    }

    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .accordion-list {
        padding: 2rem 1.25rem;
        gap: 1rem;
    }
}

/* ─── Print ───────────────────────────────────────────────── */
@media print {
    .flash-banner { display: none; }
    .accordion-body { max-height: none !important; }
    .accordion-item { break-inside: avoid; }
    body { background: white; }
}