/*
Theme Name: Trans-Inter-G 2027
Theme URI: https://transinterg.com
Author: Gilbert Capo-Chichi
Author URI: https://transinterg.com
Description: Thème WordPress pour le colloque international "Transmission Intergénérationnelle" - Lyon, 17-19 février 2027. Organisé par la Chaire UNESCO PETCD (Université Bordeaux Montaigne) et le CELIPH.
Version: 1.0
Requires at least: 5.9
Tested up to: 6.6
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: transinterg
Tags: block-patterns, custom-menu, custom-logo, translation-ready, one-column
*/

/* ===================== VARIABLES (palette issue du logo Trans-Inter-G) ===================== */
:root{
  --color-navy: #002046;        /* bleu marine du logo (casquette, texte, globe) */
  --color-navy-deep: #001730;
  --color-teal: #0f5560;        /* sarcelle du logo (arc, feuilles) */
  --color-teal-soft: #e4eeee;
  --color-gold: #8c6c37;        /* or du gland */
  --color-gold-soft: #ecdfc7;
  --color-bg: var(--color-navy-deep);
  --color-bg-alt: #f6f7f7;
  --color-ink: var(--color-navy);
  --color-paper: #ffffff;
  --color-accent: var(--color-gold);
  --color-accent-soft: var(--color-gold-soft);
  --color-accent-teal: var(--color-teal);
  --color-muted: #5b6570;
  --color-line: #e1e6e6;
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --max-width: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-paper);
  line-height: 1.6;
}

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

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 96px 0; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 14px;
  display: block;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); line-height: 1.05; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); line-height: 1.15; }

p { margin: 0 0 1em; color: var(--color-muted); }

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all .2s ease;
}
.btn-primary {
  background: var(--color-navy);
  color: #fff;
}
.btn-primary:hover { background: var(--color-teal); }
.btn-outline {
  border-color: var(--color-navy);
  color: var(--color-navy);
}
.btn-outline:hover { background: var(--color-navy); color: #fff; }

/* ===================== HEADER ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
  border-top: 3px solid var(--color-gold);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}
.site-branding { display: flex; align-items: center; gap: 14px; }
.site-branding img { height: 40px; width: auto; }
.site-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.05em;
}
.site-title small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  color: var(--color-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
}
.main-nav a { padding: 6px 0; border-bottom: 2px solid transparent; }
.main-nav a:hover { border-color: var(--color-teal); color: var(--color-teal); }
.menu-toggle { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; }

@media (max-width: 780px) {
  .main-nav { display: none; width: 100%; }
  .main-nav.is-open { display: block; }
  .main-nav ul { flex-direction: column; gap: 4px; padding: 16px 0; }
  .menu-toggle { display: block; }
  .site-header .container { flex-wrap: wrap; }
}

/* ===================== HERO ===================== */
.hero {
  background:
    radial-gradient(ellipse at top right, rgba(15,85,96,0.55), transparent 55%),
    linear-gradient(150deg, var(--color-navy-deep) 0%, var(--color-navy) 55%, #0c3b44 100%);
  color: #fff;
  padding: 100px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  border: 2px solid rgba(140,108,55,0.35);
  pointer-events: none;
}
.hero .container { display: grid; gap: 40px; position: relative; z-index: 1; }
.hero-logo { margin-bottom: 30px; }
.hero-logo img { height: 64px; width: auto; }
.hero-meta {
  color: var(--color-gold-soft);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero h1 { color: #fff; max-width: 780px; }
.hero p.lede { color: #d3dbdd; max-width: 640px; font-size: 1.1rem; }
.hero-actions { display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; }
.hero-actions .btn-primary { background: var(--color-gold); }
.hero-actions .btn-primary:hover { background: #a3803f; }
.hero-actions .btn-outline { border-color: rgba(255,255,255,0.6); color: #fff; }
.hero-actions .btn-outline:hover { background: #fff; color: var(--color-navy); }

/* ===================== INTRO / COLLOQUE ===================== */
.section-intro { background: var(--color-bg-alt); }
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.intro-meta { font-size: 0.95rem; }
.intro-meta strong { display: block; font-family: var(--font-serif); font-size: 1.3rem; margin-bottom: 6px; }
.intro-meta .divider { height: 1px; background: var(--color-line); margin: 22px 0; }
@media (max-width: 780px) { .intro-grid { grid-template-columns: 1fr; } }

/* ===================== AXES ===================== */
.axes-list { display: grid; gap: 0; margin-top: 50px; }
.axe {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 28px;
  padding: 36px 0;
  border-top: 1px solid var(--color-line);
}
.axe:last-child { border-bottom: 1px solid var(--color-line); }
.axe-num { font-family: var(--font-serif); font-size: 2.2rem; color: var(--color-teal); }
.axe h3 { font-size: 1.3rem; margin-bottom: 10px; }
@media (max-width: 600px) { .axe { grid-template-columns: 1fr; gap: 8px; } }

/* ===================== COMITÉ ===================== */
.section-comite { background: var(--color-bg-alt); }
.comite-filters { display: flex; gap: 10px; flex-wrap: wrap; margin: 28px 0 40px; }
.comite-filters button {
  border: 1px solid var(--color-line);
  background: #fff;
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.85rem;
  cursor: pointer;
}
.comite-filters button.active,
.comite-filters button:hover { background: var(--color-navy); color: #fff; border-color: var(--color-navy); }
.comite-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.comite-card {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: 14px;
  padding: 22px;
}
.comite-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-teal-soft);
  color: var(--color-teal);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-weight: bold;
  margin-bottom: 14px;
}
.comite-card { border-top: 3px solid transparent; }
.comite-card:hover { border-top-color: var(--color-gold); }
.comite-card h3 { font-size: 1.02rem; margin-bottom: 4px; color: var(--color-navy); }
.comite-card .affil { font-size: 0.85rem; color: var(--color-muted); margin-bottom: 4px; }
.comite-card .pays { font-size: 0.78rem; color: var(--color-teal); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }

.section-organisation { background: var(--color-paper); }
.organisation-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.organisation-grid .comite-avatar {
  background: var(--color-gold-soft);
  color: var(--color-gold);
}

/* ===================== CALENDRIER ===================== */
.calendrier-list { margin-top: 50px; }
.cal-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid var(--color-line);
  align-items: baseline;
}
.cal-item:last-child { border-bottom: 1px solid var(--color-line); }
.cal-date { font-family: var(--font-serif); font-size: 1.15rem; color: var(--color-gold); }
.cal-item h3 { font-size: 1.05rem; margin-bottom: 4px; }
@media (max-width: 600px) { .cal-item { grid-template-columns: 1fr; gap: 6px; } }

/* ===================== APPEL ===================== */
.section-appel {
  background: linear-gradient(160deg, var(--color-navy-deep), var(--color-navy) 60%, #0c3b44);
  color: #fff;
  text-align: center;
}
.section-appel h2 { color: #fff; max-width: 720px; margin-left: auto; margin-right: auto; }
.section-appel p { color: #cfcdc9; max-width: 640px; margin-left: auto; margin-right: auto; }
.appel-email {
  display: inline-block;
  margin: 26px 0 30px;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-accent-soft);
  border-bottom: 1px solid var(--color-accent-soft);
  padding-bottom: 4px;
}

/* ===================== FOOTER ===================== */
.site-footer {
  background: var(--color-navy-deep);
  color: #9aa6ac;
  padding: 60px 0 30px;
  font-size: 0.85rem;
}
.site-footer .footer-logo img { height: 40px; width: auto; margin-bottom: 14px; }
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-logos { display: flex; gap: 18px; align-items: center; }
.footer-logos img { height: 28px; filter: brightness(0) invert(1); opacity: .7; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 30px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.78rem;
  color: #6f6d6a;
}