/* tchatbotgpt.com — tchatter avec l'IA (ludique, bulles) */
:root {
  --ink: #241a3b;
  --ink-soft: #625a7a;
  --bg: #f7f4ff;
  --white: #ffffff;
  --line: #e6defa;
  --violet: #6d28d9;
  --violet-dark: #5420ad;
  --coral: #ff7a59;
  --mint: #2ec4a6;
  --radius: 24px;
  --max: 1100px;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: "Trebuchet MS", system-ui, -apple-system, "Segoe UI", Roboto, 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(--violet); text-underline-offset: 3px; }
a:hover { color: var(--coral); }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .55em; letter-spacing: -.01em; font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; font-weight: 800; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.3vw, 2.3rem); }
h3 { font-size: 1.15rem; }
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: rgba(247, 244, 255, .9); backdrop-filter: blur(10px); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 70px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.2rem; color: var(--ink); text-decoration: none; font-family: system-ui, sans-serif; }
.logo .tld { color: var(--coral); }
.nav { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; background: var(--white); padding: 6px; border-radius: 999px; border: 1px solid var(--line); }
.nav a { color: var(--ink-soft); text-decoration: none; font-weight: 700; font-size: .92rem; padding: 7px 14px; border-radius: 999px; }
.nav a:hover { color: var(--violet); }
.nav a[aria-current="page"] { background: #efe8ff; color: var(--violet); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 26px; border-radius: 999px; font-weight: 800; text-decoration: none; transition: transform .15s; font-family: system-ui, sans-serif; }
.btn-primary { background: var(--violet); color: #fff; box-shadow: 0 12px 26px -12px rgba(109, 40, 217, .9); }
.btn-primary:hover { background: var(--violet-dark); color: #fff; transform: translateY(-2px) rotate(-1deg); }
.btn-ghost { background: var(--white); color: var(--ink); border: 2px solid var(--line); }
.btn-ghost:hover { border-color: var(--coral); color: var(--coral); }
.nav .btn { padding: 7px 16px; color: #fff; background: var(--coral); box-shadow: none; }
.nav .btn:hover { color: #fff; background: #f0603d; }

.hero { padding: 56px 0 64px; }
.hero .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.hey { display: inline-block; background: var(--white); border: 1px solid var(--line); border-radius: 18px 18px 18px 4px; padding: 8px 16px; font-weight: 700; color: var(--violet); margin-bottom: 18px; }
.lead { font-size: 1.17rem; color: var(--ink-soft); max-width: 34em; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.hl { background: linear-gradient(180deg, transparent 62%, #ffd6c9 62%); }

section { padding: 72px 0; }
.white { background: var(--white); border-radius: 40px; margin: 0 12px; }
.section-head { max-width: 740px; margin: 0 auto 40px; text-align: center; }
.section-head p { color: var(--ink-soft); font-size: 1.07rem; }
.tag { display: inline-block; font-size: .8rem; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; color: var(--coral); margin-bottom: 10px; }

.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.white .card { background: var(--bg); }
.card p { color: var(--ink-soft); margin: 0; }
.emoji { font-size: 2rem; line-height: 1; display: block; margin-bottom: 12px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }

/* Chat dialogues */
.chat { display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 88%; padding: 12px 16px; border-radius: 20px; font-size: .97rem; line-height: 1.5; }
.msg.me { align-self: flex-end; background: var(--violet); color: #fff; border-bottom-right-radius: 6px; }
.msg.bot { align-self: flex-start; background: var(--white); border: 1px solid var(--line); border-bottom-left-radius: 6px; }
.white .msg.bot { background: var(--bg); }
.msg.bot b { color: var(--violet); }
.convo { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.convo h2 { font-size: 1.3rem; display: flex; gap: 10px; align-items: center; }
.convo .why { margin-top: 14px; font-size: .92rem; color: var(--ink-soft); border-top: 1px dashed var(--line); padding-top: 12px; }

/* Tips */
.tips { counter-reset: t; list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; grid-template-columns: repeat(2, 1fr); }
.tips li { background: var(--white); border: 1px solid var(--line); border-radius: 20px; padding: 20px 20px 20px 70px; position: relative; }
.tips li::before { counter-increment: t; content: counter(t); position: absolute; left: 18px; top: 18px; width: 38px; height: 38px; border-radius: 12px; background: var(--coral); color: #fff; font-weight: 800; display: grid; place-items: center; }
.tips h3 { margin-bottom: 4px; }
.tips p { margin: 0; color: var(--ink-soft); }
.donts li::before { background: var(--ink); content: "✕"; }
.dos li::before { background: var(--mint); content: "✓"; }

/* Reviews */
.review { margin: 0; display: flex; flex-direction: column; gap: 14px; }
.review blockquote { margin: 0; background: var(--bg); border-radius: 20px 20px 20px 6px; padding: 16px; }
.review footer { display: flex; align-items: center; gap: 10px; font-size: .9rem; color: var(--ink-soft); }
.avatar { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; color: #fff; flex: none; }
.review footer b { color: var(--ink); display: block; }
.disclaimer { text-align: center; color: var(--ink-soft); font-size: .85rem; margin-top: 16px; }

.faq details { background: var(--white); border: 1px solid var(--line); border-radius: 20px; padding: 16px 22px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 800; list-style: none; position: relative; padding-right: 30px; font-family: system-ui, sans-serif; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "💬"; position: absolute; right: 0; top: -1px; }
.faq details p { margin: 10px 0 0; color: var(--ink-soft); }

.cta { background: var(--violet); color: #fff; border-radius: 40px; padding: 56px 32px; text-align: center; position: relative; overflow: hidden; }
.cta::before, .cta::after { content: ""; position: absolute; border-radius: 50%; background: rgba(255, 255, 255, .08); }
.cta::before { width: 260px; height: 260px; left: -80px; top: -90px; }
.cta::after { width: 200px; height: 200px; right: -60px; bottom: -80px; background: rgba(255, 122, 89, .35); }
.cta h2 { color: #fff; position: relative; }
.cta p { color: #e4d9ff; max-width: 600px; margin: 0 auto 24px; position: relative; }
.cta .btn-primary { background: #fff; color: var(--violet); position: relative; }
.cta .btn-primary:hover { color: var(--violet); }

.page-hero { padding: 50px 0 20px; }
.breadcrumb { font-size: .88rem; color: var(--ink-soft); margin-bottom: 12px; }
.breadcrumb a { color: var(--ink-soft); }
.prose { max-width: 760px; }
.prose h2 { margin-top: 1.4em; font-size: 1.6rem; }

.site-footer { background: var(--ink); color: #c5bedb; padding: 52px 0 28px; font-size: .95rem; margin-top: 30px; }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { color: var(--coral); }
.site-footer .logo { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 30px; margin-bottom: 26px; }
.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: 34px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  section { padding: 52px 0; }
  .white { margin: 0; border-radius: 26px; }
  .grid-3, .grid-2, .tips { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta { padding: 40px 20px; border-radius: 26px; }
  .nav { border-radius: 18px; }
  .nav .btn { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }