/*
  style.css — Feuille de style commune à toutes les pages
  =========================================================
  Contient : reset, variables, animations, header, footer,
  composants partagés (page-hero, boutons, etc.)

  Chaque page peut avoir sa propre feuille de style
  supplémentaire pour ses éléments spécifiques.
*/

/* ── RESET UNIVERSEL ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── VARIABLES CSS ── */
:root {
  --bg: #0a0a0a;
  --bg2: #111111;
  --bg3: #161614;
  --text: #e8e4dc;
  --text-muted: rgba(232,228,220,0.5);
  --text-hint: rgba(232,228,220,0.25);
  --gold: #c8a96e;
  --gold-faint: rgba(200,169,110,0.10);
  --border: rgba(232,228,220,0.08);
  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Raleway', sans-serif;
}

/* ── BASE ── */
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Classes d'animation avec délais en cascade */
.dm-reveal { opacity: 0; animation: fadeUp 0.7s ease forwards; }
.dm-r1 { animation-delay: 0.1s; }
.dm-r2 { animation-delay: 0.22s; }
.dm-r3 { animation-delay: 0.34s; }
.dm-r4 { animation-delay: 0.46s; }


/* ── HEADER ── */
.dm-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 3rem;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 0.5px solid var(--border);
}

/* Logo */
.dm-logo {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.04em;
}
.dm-logo span { color: var(--gold); }

/* Navigation */
.dm-nav { display: flex; gap: 2rem; list-style: none; }
.dm-nav a {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(232,228,220,0.45);
  text-decoration: none;
  transition: color 0.2s;
}
.dm-nav a:hover,
.dm-nav a.active { color: var(--text); }

/* Bouton CTA */
.dm-cta {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  border: 0.5px solid rgba(200,169,110,0.4);
  padding: 9px 20px;
  border-radius: 2px;
  transition: background 0.2s;
  white-space: nowrap;
}
.dm-cta:hover { background: var(--gold-faint); }
/* État actif : quand on est sur la page "Acheter une œuvre" */
.dm-cta-active { background: var(--gold-faint); }

/* Bouton hamburger (mobile) */
.dm-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.dm-burger span {
  display: block;
  width: 22px; height: 1px;
  background: var(--text);
  transition: transform 0.3s, opacity 0.3s;
}

/* Menu mobile */
.dm-mobile-nav {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: rgba(10,10,10,0.98);
  padding: 2rem 3rem;
  border-bottom: 0.5px solid var(--border);
  z-index: 9998;
  flex-direction: column;
  gap: 1.25rem;
}
.dm-mobile-nav a {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(232,228,220,0.6);
  text-decoration: none;
}
.dm-mobile-nav.open { display: flex; }


/* ── EN-TÊTE DE PAGE (page-hero) ── */
/* Commun à toutes les pages intérieures */
.page-hero {
  padding: 10rem 3rem 5rem;
  border-bottom: 0.5px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: end;
}

.page-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.25rem;
}
.page-eyebrow::before {
  content: '';
  display: block;
  width: 32px; height: 0.5px;
  background: var(--gold);
}

.page-title {
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 68px);
  font-weight: 400;
  line-height: 1.05;
  color: var(--text);
}
.page-title em { font-style: italic; color: var(--text-muted); }

.page-intro {
  font-size: 15px;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-muted);
}

/* Zone de contenu standard */
.page-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 3rem 6rem;
}


/* ── COMPOSANTS PARTAGÉS ── */

/* Étiquette de section (petit texte doré avec ligne) */
.section-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-label::before {
  content: '';
  display: block;
  width: 20px; height: 0.5px;
  background: var(--gold);
}

/* Bouton principal doré */
.btn-gold {
  display: inline-block;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  background: var(--gold);
  color: #0a0a0a;
  padding: 14px 28px;
  border-radius: 2px;
  transition: opacity 0.2s, transform 0.15s;
  border: none;
  cursor: pointer;
}
.btn-gold:hover { opacity: 0.85; transform: translateY(-1px); }

/* Lien discret avec flèche */
.link-arrow {
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s;
  padding-bottom: 4px;
  border-bottom: 0.5px solid rgba(232,228,220,0.15);
}
.link-arrow:hover { color: var(--text); border-color: rgba(232,228,220,0.4); }
.link-arrow::after { content: '→'; transition: transform 0.2s; }
.link-arrow:hover::after { transform: translateX(4px); }

/* Citation avec barre dorée */
.dm-quote {
  font-family: var(--serif);
  font-size: clamp(18px, 2vw, 26px);
  font-weight: 400;
  font-style: italic;
  color: var(--text-hint);
  line-height: 1.55;
  border-left: 1.5px solid var(--gold);
  padding-left: 1.5rem;
}

/* Séparateur */
.dm-divider {
  border: none;
  border-top: 0.5px solid var(--border);
  margin: 3rem 0;
}


/* ── FOOTER ── */
.dm-footer {
  border-top: 0.5px solid var(--border);
  padding: 2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 4rem;
}

.dm-footer-logo {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--text-hint);
  text-decoration: none;
}

.dm-footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}
.dm-footer-links a {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-hint);
  text-decoration: none;
  transition: color 0.2s;
}
.dm-footer-links a:hover { color: var(--gold); }

.dm-footer-copy {
  font-size: 10px;
  color: rgba(232,228,220,0.18);
  letter-spacing: 0.08em;
}


/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .dm-header { padding: 1.2rem 1.5rem; }
  .dm-nav, .dm-cta { display: none; }
  .dm-burger { display: flex; }

  .page-hero {
    grid-template-columns: 1fr;
    padding: 8rem 1.5rem 3rem;
    gap: 2rem;
  }

  .page-content { padding: 3rem 1.5rem 4rem; }

  .dm-footer {
    padding: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
  }
}