/*
Theme Name: Le Radar IA
Theme URI: https://leradar-ia.fr
Author: Le Radar IA
Author URI: https://leradar-ia.fr
Description: Thème sur-mesure pour Le Radar IA — actualité et vulgarisation de l'intelligence artificielle en français. Fil unique à pastilles (Actu / Comprendre), glossaire, palette violette. Développé conformément au cahier des charges v1.1.
Version: 1.0.0
Requires at least: 6.4
Requires PHP: 8.0
Tested up to: 6.7
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: le-radar-ia
*/

/* =========================================================
   1. TOKENS — palette extraite du logo (cf. cahier des charges §2.3)
   ========================================================= */
:root {
  --violet-deep: #7B2FC7;
  --blue-violet: #5B74CA;
  --magenta: #C264A0;
  --coral: #E05577;

  --bg: #FFFFFF;
  --bg-soft: #F7F5FB;
  --ink: #1A1626;
  --ink-soft: #57506B;
  --ink-faint: #8A83A0;
  --line: #E7E2F2;

  --pastille-actu-bg: var(--violet-deep);
  --pastille-actu-fg: #FFFFFF;
  --pastille-comprendre-bg: transparent;
  --pastille-comprendre-fg: var(--violet-deep);
  --pastille-comprendre-border: var(--violet-deep);

  --gradient-brand: linear-gradient(90deg, var(--blue-violet) 0%, var(--violet-deep) 35%, var(--magenta) 70%, var(--coral) 100%);

  --font-heading: "Poppins", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

  --radius-s: 4px;
  --radius-m: 8px;
  --radius-l: 16px;
  --shadow-card: 0 1px 2px rgba(26,22,38,0.06), 0 8px 24px -12px rgba(26,22,38,0.14);
  --container: 1180px;
}

/* =========================================================
   2. RESET
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  font-size: 17px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--violet-deep); text-decoration-color: rgba(123,47,199,0.35); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 700; line-height: 1.15; margin: 0 0 0.5em; text-wrap: balance; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.2em; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--violet-deep); color: #fff;
  padding: 10px 16px; z-index: 1000; border-radius: 0 0 var(--radius-s) 0;
}
.skip-link:focus { left: 0; }

/* =========================================================
   3. HEADER / NAV
   ========================================================= */
.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(8px);
  z-index: 50;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}
.site-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.site-logo img { height: 34px; width: auto; }
.site-logo__text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.main-nav ul { list-style: none; display: flex; gap: 26px; margin: 0; padding: 0; }
.main-nav a {
  color: var(--ink); text-decoration: none; font-weight: 600; font-size: 15px;
  padding-bottom: 4px; border-bottom: 2px solid transparent;
}
.main-nav a:hover, .main-nav a.is-active { color: var(--violet-deep); border-bottom-color: var(--coral); }
.nav-toggle { display: none; background: none; border: none; padding: 8px; }
.nav-toggle svg { width: 24px; height: 24px; stroke: var(--ink); }

@media (max-width: 780px) {
  .main-nav { position: fixed; inset: 64px 0 0 0; background: var(--bg); padding: 24px; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
  .main-nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a { display: block; padding: 14px 4px; font-size: 18px; }
  .nav-toggle { display: inline-flex; }
}

/* =========================================================
   4. PASTILLES (badges Actu / Comprendre)
   ========================================================= */
.pastille {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 999px;
  line-height: 1.6;
}
.pastille--actu { background: var(--pastille-actu-bg); color: var(--pastille-actu-fg); }
.pastille--comprendre {
  background: var(--pastille-comprendre-bg);
  color: var(--pastille-comprendre-fg);
  border: 1.3px solid var(--pastille-comprendre-border);
}
.sponsor-flag {
  display: inline-flex; align-items: center; font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.04em; text-transform: uppercase; padding: 3px 10px; border-radius: 999px;
  background: var(--bg-soft); color: var(--ink-soft); border: 1px solid var(--line);
}

/* =========================================================
   5. HOME — À la une / fil / module découverte
   ========================================================= */
.hero-une {
  display: grid;
  gap: 24px;
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--line);
}
.hero-une__tags { display: flex; gap: 8px; margin-bottom: 14px; }
.hero-une__title { font-size: clamp(28px, 4vw, 42px); margin-bottom: 12px; }
.hero-une__title a { color: var(--ink); text-decoration: none; }
.hero-une__excerpt { color: var(--ink-soft); font-size: 18px; max-width: 720px; }
.hero-une__meta { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-faint); margin-top: 12px; }

.decouverte-module {
  margin: 32px 0;
  padding: 24px;
  border-radius: var(--radius-l);
  background: linear-gradient(135deg, rgba(123,47,199,0.06), rgba(224,85,119,0.06));
  border: 1px solid var(--line);
}
.decouverte-module__label {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--violet-deep); margin-bottom: 6px;
}
.decouverte-module__title { font-size: 20px; margin-bottom: 4px; }
.decouverte-module__list { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 14px 0 0; }
.decouverte-module__list a {
  display: inline-block; padding: 8px 14px; border-radius: 999px; background: var(--bg);
  border: 1px solid var(--line); color: var(--ink); text-decoration: none; font-size: 14px; font-weight: 600;
}
.decouverte-module__list a:hover { border-color: var(--violet-deep); color: var(--violet-deep); }

.fil { padding: 24px 0 60px; }
.fil__label { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 18px; }
.fil__filters { display: flex; gap: 10px; margin-bottom: 24px; flex-wrap: wrap; }
.fil__filters a {
  font-size: 13px; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line);
  color: var(--ink-soft); text-decoration: none; font-weight: 600;
}
.fil__filters a.is-active, .fil__filters a:hover { border-color: var(--violet-deep); color: var(--violet-deep); }

.card-list { display: flex; flex-direction: column; gap: 4px; }
.card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.card__tags { display: flex; gap: 8px; margin-bottom: 10px; }
.card__title { font-size: 20px; margin-bottom: 6px; }
.card__title a { color: var(--ink); text-decoration: none; }
.card__title a:hover { color: var(--violet-deep); }
.card__excerpt { color: var(--ink-soft); font-size: 15px; margin-bottom: 8px; }
.card__meta { font-family: var(--font-mono); font-size: 12px; color: var(--ink-faint); }
.card__thumb { width: 140px; height: 100px; object-fit: cover; border-radius: var(--radius-m); }

@media (max-width: 600px) {
  .card { grid-template-columns: 1fr; }
  .card__thumb { width: 100%; height: 160px; order: -1; }
}

.load-more { text-align: center; margin-top: 32px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; border-radius: 999px;
  background: var(--violet-deep); color: #fff; text-decoration: none; font-weight: 700; font-size: 15px;
  border: none;
}
.btn:hover { background: #6a26ab; color: #fff; }
.btn--ghost { background: transparent; color: var(--violet-deep); border: 1.5px solid var(--violet-deep); }
.btn--ghost:hover { background: rgba(123,47,199,0.06); }

/* =========================================================
   6. ARTICLE
   ========================================================= */
.article { max-width: 760px; margin: 0 auto; padding: 40px 24px 80px; }
.article__tags { display: flex; gap: 8px; margin-bottom: 16px; }
.article__title { font-size: clamp(28px, 4vw, 38px); margin-bottom: 14px; }
.article__meta { font-family: var(--font-mono); font-size: 13px; color: var(--ink-faint); margin-bottom: 24px; }
.article__source {
  font-size: 14px; color: var(--ink-soft); background: var(--bg-soft); border-radius: var(--radius-m);
  padding: 12px 16px; margin-bottom: 28px; border: 1px solid var(--line);
}
.article__body { font-size: 18px; line-height: 1.75; }
.article__body p { margin-bottom: 1.3em; }
.article__body h2 { font-size: 24px; margin-top: 1.6em; }
.article__body h3 { font-size: 20px; margin-top: 1.4em; }
.article__body a { font-weight: 600; }
.article__body blockquote {
  margin: 1.6em 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--violet-deep);
  color: var(--ink-soft); font-style: italic;
}
.sponsor-notice {
  margin-bottom: 24px; padding: 12px 16px; border-radius: var(--radius-m);
  background: #FFF7EC; border: 1px solid #F0DDBB; color: #6B4E1A; font-size: 14px; font-weight: 600;
}
.article__glossary-links { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.article__glossary-links h2 { font-size: 16px; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); }

/* =========================================================
   7. GLOSSAIRE
   ========================================================= */
.glossaire-search {
  width: 100%; padding: 14px 18px; border-radius: 999px; border: 1.5px solid var(--line);
  font-size: 16px; margin-bottom: 32px; font-family: var(--font-body);
}
.glossaire-search:focus { border-color: var(--violet-deep); outline: none; }
.glossaire-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.glossaire-item {
  padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius-m); text-decoration: none;
  color: var(--ink); box-shadow: var(--shadow-card);
}
.glossaire-item:hover { border-color: var(--violet-deep); }
.glossaire-item__term { font-weight: 700; font-size: 17px; margin-bottom: 6px; display: block; }
.glossaire-item__def { font-size: 14px; color: var(--ink-soft); }
.glossaire-item__level {
  display: inline-block; margin-top: 8px; font-family: var(--font-mono); font-size: 10.5px;
  text-transform: uppercase; color: var(--ink-faint);
}
.glossaire-letter { font-family: var(--font-heading); font-size: 22px; color: var(--violet-deep); margin: 32px 0 12px; }

/* =========================================================
   8. NEWSLETTER / DON
   ========================================================= */
.cta-block {
  border-radius: var(--radius-l); padding: 40px; text-align: center; margin: 40px 0;
  background: var(--gradient-brand); color: #fff;
}
.cta-block h2 { color: #fff; }
.cta-block p { color: rgba(255,255,255,0.9); }
.cta-block form { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }
.cta-block input[type=email] {
  padding: 12px 16px; border-radius: 999px; border: none; min-width: 260px; font-size: 15px;
}
.cta-block .btn { background: #fff; color: var(--violet-deep); }
.cta-block .btn:hover { background: #f1e9fb; }

/* =========================================================
   9. FOOTER
   ========================================================= */
.site-footer { border-top: 1px solid var(--line); margin-top: 60px; padding: 40px 0; background: var(--bg-soft); }
.site-footer__grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; }
.site-footer nav ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 18px; }
.site-footer a { color: var(--ink-soft); text-decoration: none; font-size: 14px; }
.site-footer a:hover { color: var(--violet-deep); }
.site-footer__legal { font-size: 12.5px; color: var(--ink-faint); margin-top: 24px; }

/* =========================================================
   10. UTILITIES / A11Y / MOTION
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}