/**
 * layout.css — EPP
 * Fond page, header sticky, footer, bento grid, slides
 * WP0 v1.0 — 2026-06-08
 * UI conforme à la charte du dispositif EPP — voir WP0.
 */

/* ── Reset ────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-snap-type: y proximity; }

/* ── Fond de page ─────────────────────────────────────────────────────────── */
body {
  background-color: var(--color-ivoire);
  min-height: 100vh;
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--text-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 20%, rgba(196, 132, 74, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(157, 97, 79, 0.08) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

/* Toutes les slides sont au-dessus de l'overlay */
.alf-slide { position: relative; z-index: 1; }

/* ── Focus ────────────────────────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 0 4px var(--color-focus-ring);
}

/* ── Header sticky ────────────────────────────────────────────────────────── */
.alf-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(250, 247, 238, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-sable);
  padding: 0 40px;
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

.header-logo { display: flex; align-items: center; flex-shrink: 0; }

.header-progress {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
}

.progress-bar-container {
  flex: 1;
  height: 4px;
  background: var(--color-sable);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--color-terracotta);
  border-radius: 2px;
  width: 0%;
  transition: width 0.4s ease;
}

.progress-label {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
  white-space: nowrap;
  min-width: 36px;
}

.header-meta { display: flex; align-items: center; gap: 8px; }

/* ── Main ─────────────────────────────────────────────────────────────────── */
.alf-main {
  position: relative;
  z-index: 1;
}

/* ── Slides ───────────────────────────────────────────────────────────────── */
.alf-slide {
  display: none;
  flex-direction: column;
  min-height: calc(100vh - var(--header-height) - var(--footer-height));
}

.alf-slide.active,
.alf-slide--active {
  display: flex;
  flex-direction: column;
}

/* ── Bento grid ───────────────────────────────────────────────────────────── */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--bento-gap);
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
}

.bento-cell {
  border-radius: var(--bento-radius);
  padding: var(--bento-padding);
  overflow: hidden;
}

.bento-1-3  { grid-column: span 4; }
.bento-1-2  { grid-column: span 6; }
.bento-2-3  { grid-column: span 8; }
.bento-full { grid-column: span 12; }

@media (max-width: 900px) {
  .bento-1-3, .bento-1-2 { grid-column: span 6; }
  .bento-2-3              { grid-column: span 12; }
  .bento-grid             { padding: 0 24px; }
}

@media (max-width: 600px) {
  .bento-1-3, .bento-1-2, .bento-2-3 { grid-column: span 12; }
  .bento-grid { padding: 0 16px; gap: 12px; }
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.alf-footer {
  padding: 24px 40px;
  text-align: center;
  border-top: 1px solid var(--color-sable);
  margin-top: 40px;
  position: relative;
  z-index: var(--z-footer);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--footer-height);
  background: rgba(250, 247, 238, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.footer-brand {
  font-size: var(--text-xs);
  font-weight: var(--fw-regular);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --header-height: 56px; --footer-height: 68px; }
  .alf-header { padding: 0 var(--spacing-lg); }
  .alf-footer { padding: 0 var(--spacing-lg); }
}