/* tchatbotgpt.fr — l'IA pratique au quotidien (sobre, marine & rouge) */
:root {
  --ink: #16213a;
  --ink-soft: #4f5b74;
  --bg: #ffffff;
  --bg-alt: #f2f4f8;
  --line: #dde2ec;
  --navy: #1b2a4a;
  --navy-2: #2b3f6b;
  --red: #e63946;
  --red-dark: #c42a36;
  --radius: 10px;
  --max: 1140px;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; font-size: 17px; line-height: 1.65; color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; }
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--navy-2); text-underline-offset: 3px; }
a:hover { color: var(--red); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4.4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.12rem; }
p { margin: 0 0 1em; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: #fff; padding: 8px 12px; z-index: 10; }

.site-header { position: sticky; top: 0; z-index: 5; background: var(--navy); }
.site-header::after { content: ""; display: block; height: 4px; background: var(--red); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 66px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.15rem; color: #fff; text-decoration: none; }
.logo .tld { color: #ff8a93; }
.nav { display: flex; gap: 6px 22px; flex-wrap: wrap; align-items: center; }
.nav a { color: #c9d2e6; text-decoration: none; font-weight: 600; font-size: .94rem; }
.nav a:hover, .nav a[aria-current="page"] { color: #fff; }
.nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--red); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: var(--radius); font-weight: 700; text-decoration: none; transition: background .15s; }
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); color: #fff; }
.btn-ghost { border: 2px solid var(--navy); color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; }
.nav .btn { padding: 8px 16px; color: #fff; box-shadow: none; }

.hero { background: var(--bg-alt); padding: 58px 0; border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 44px; align-items: center; }
.ribbon { display: inline-flex; align-items: center; gap: 8px; font-size: .82rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--red); margin-bottom: 14px; }
.ribbon::before { content: ""; width: 26px; height: 3px; background: var(--red); }
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 36em; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.facts { display: grid; grid-template-columns: repeat(3, auto); gap: 6px 26px; margin-top: 26px; font-size: .9rem; color: var(--ink-soft); justify-content: start; }
.facts b { display: block; color: var(--navy); font-size: 1.15rem; }

section { padding: 70px 0; }
.alt { background: var(--bg-alt); }
.section-head { max-width: 760px; margin: 0 0 36px; }
.section-head p { color: var(--ink-soft); font-size: 1.05rem; }

.grid { display: grid; gap: 18px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card p { color: var(--ink-soft); margin: 0; }
.alt .card { background: #fff; }
.icon { width: 42px; height: 42px; border-radius: 8px; display: grid; place-items: center; background: var(--navy); margin-bottom: 14px; }
.icon svg { width: 22px; height: 22px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }

/* Letter templates */
.letter { background: #fff; border: 1px solid var(--line); border-top: 4px solid var(--navy); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 10px; }
.letter .type { font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; color: var(--red); }
.letter h3 { margin: 0; }
.letter p { margin: 0; color: var(--ink-soft); font-size: .95rem; }
.letter code { display: block; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .86rem; background: var(--bg-alt); border-left: 3px solid var(--red); padding: 10px 12px; color: var(--ink); white-space: normal; }

/* Jobs table */
.jobs { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); }
.jobs th, .jobs td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.jobs th { background: var(--navy); color: #fff; font-size: .9rem; }
.jobs td:first-child { font-weight: 700; color: var(--navy); white-space: nowrap; }
.jobs td em { color: var(--ink-soft); }
.table-wrap { overflow-x: auto; border-radius: var(--radius); }

/* Review */
.review { margin: 0; display: flex; flex-direction: column; gap: 14px; }
.review blockquote { margin: 0; }
.review footer { margin-top: auto; font-size: .9rem; color: var(--ink-soft); border-top: 1px solid var(--line); padding-top: 12px; }
.review footer b { color: var(--navy); }
.disclaimer { color: var(--ink-soft); font-size: .85rem; margin-top: 14px; }

.box { border: 1px solid var(--line); border-left: 4px solid var(--red); background: #fff; border-radius: var(--radius); padding: 16px 18px; color: var(--ink-soft); }
.box strong { color: var(--ink); }

.faq details { border: 1px solid var(--line); border-radius: var(--radius); padding: 15px 20px; margin-bottom: 10px; background: #fff; }
.faq summary { cursor: pointer; font-weight: 700; list-style: none; position: relative; padding-right: 28px; color: var(--navy); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "›"; position: absolute; right: 4px; top: -4px; font-size: 1.5rem; color: var(--red); transition: transform .15s; }
.faq details[open] summary::after { transform: rotate(90deg); }
.faq details p { margin: 10px 0 0; color: var(--ink-soft); }

.cta { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 46px 40px; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; border-left: 8px solid var(--red); }
.cta h2 { color: #fff; margin-bottom: .3em; }
.cta p { color: #c9d2e6; margin: 0; }

.page-hero { padding: 48px 0 26px; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.breadcrumb { font-size: .88rem; color: var(--ink-soft); margin-bottom: 10px; }
.breadcrumb a { color: var(--ink-soft); }
.prose { max-width: 760px; }
.prose h2 { margin-top: 1.4em; font-size: 1.5rem; }

.site-footer { background: var(--navy); color: #b8c3da; padding: 48px 0 26px; font-size: .95rem; border-top: 4px solid var(--red); }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 30px; margin-bottom: 24px; }
.footer-grid h4 { color: #fff; margin: 0 0 12px; font-size: 1rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; }
.footer-disclaimer { font-size: .85rem; border-top: 1px solid rgba(255, 255, 255, .14); padding-top: 18px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: .85rem; }

@media (max-width: 920px) {
  .hero .wrap, .split { grid-template-columns: 1fr; gap: 32px; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  section { padding: 50px 0; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .facts { grid-template-columns: repeat(2, auto); }
  .cta { padding: 34px 22px; }
  .nav .btn { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }