/* Octo — thème clair (lecture), sections fortes en bleu nuit ; couleurs de la marque : nuit #001A4E, corail #FC654E */
:root {
  --ocean-950: #F5F8FC; --ocean-900: #FFFFFF; --ocean-850: #EEF3FA; --ocean-800: #E6EEF8; --ocean-700: #D5DFEC;
  --line: #D5DFEC; --ivory: #001A4E; --text: #1E3355; --muted: #4A5D7E; --seafoam: #0E9AA7; --sea: #1B4FBF;
  --coral: #FC654E; --coral-text: #C4402A; --teal-text: #0B6F78; --sun: #F2A93B; --night: #001A4E; --night-2: #0A2A66;
  color-scheme: light;
}
body { background: var(--ocean-950); color: var(--text); }
a { color: var(--coral-text); }
a:hover { color: #A3341F; }
.top { background: rgba(255, 255, 255, .9); border-bottom-color: var(--line); }
.brand { color: var(--night); }
.brand-icon { width: 32px; height: 32px; border-radius: 8px; }
.nav a { color: var(--muted); }
.nav a:hover, .nav a[aria-current] { color: var(--night); }
.btn { color: var(--night); box-shadow: 0 10px 24px -12px rgba(252, 101, 78, .8); }
.btn:hover { color: var(--night); background: #FF7F6B; }
.btn-ghost { color: var(--night); border-color: var(--line); background: #fff; }
.btn-ghost:hover { background: var(--ocean-850); color: var(--night); }
.box { background: #fff; }
.box-tldr { background: linear-gradient(135deg, #E3F4F5, #fff 70%); border-left-color: var(--seafoam); }
.box-tldr p { color: var(--night); }
.toc { background: #fff; }
.toc a { color: var(--text); }
thead th { background: var(--ocean-800); color: var(--night); }
tbody th { color: var(--night); }
tbody tr:nth-child(even) { background: #F7FAFD; }
.card { background: #fff; }
.card:hover { border-color: #A9BCD6; }
.card-title { color: var(--night); }
/* Encadré app : bleu nuit, texte clair */
.cta { background: radial-gradient(120% 140% at 0% 0%, rgba(252, 101, 78, .28), transparent 55%), linear-gradient(160deg, var(--night-2), var(--night)); border-color: #1B3A7A; color: #DCE6F5; box-shadow: 0 24px 50px -30px rgba(0, 26, 78, .7); }
.cta-title, .cta strong { color: #fff; }
.cta-note { color: #AFC0DD !important; }
/* Bande finale : bleu nuit et mascotte */
.final { background: radial-gradient(90% 120% at 50% 0%, #0E3A8C, var(--night) 70%); }
.final::after { display: none; }
.final h2 { color: #fff; }
.final p { color: #DCE6F5; }
.final .cta-note { color: #AFC0DD; }
.final-in { padding-top: 64px; padding-bottom: 80px; }
.final-mascot { width: 180px; height: auto; margin: 0 auto 8px; display: block; }
.foot { background: var(--night); border-top-color: #12306A; }
.foot p, .foot a { color: #AFC0DD; }
.foot a:hover { color: #fff; }
.f-title { color: #fff !important; }
.foot .brand { color: #fff; }
.foot-legal p { color: #8FA3C7; }
.sticky { background: rgba(0, 26, 78, .96); border-color: #1B3A7A; color: #fff; }
.sticky small { color: #AFC0DD; }
.sticky b { color: #fff; }
.langs a { color: #AFC0DD; }
.langs a[aria-current] { color: #fff; }
h1, h2, h3, h4 { color: var(--night); }
b, strong { color: var(--night); }
.cta b, .cta strong, .sticky b { color: #fff; }
/* Accueil : héros bleu nuit */
.home .hero { background: radial-gradient(80% 120% at 85% 10%, #0E3A8C, var(--night) 65%); color: #DCE6F5; padding: 48px 0 56px !important; }
.home .hero h1 { color: #fff; }
.home .hero h1 em { color: var(--coral); }
.home .hero .lede { color: #DCE6F5; }
.home .hero .eyebrow { color: #7FD6DC; }
.home .hero .cta-note { color: #AFC0DD !important; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: center; }
.hero-grid .mascot { margin: 0; text-align: center; }
.hero-grid .mascot img { width: min(360px, 90%); height: auto; margin: 0 auto; filter: drop-shadow(0 30px 40px rgba(0, 0, 0, .35)); }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } .hero-grid .mascot img { width: 200px; } }
.kicker { color: var(--coral-text); }
.section-head p { color: var(--muted); }
.features li, .modes li, .pricing li { background: #fff; }
.modes li { background: linear-gradient(180deg, #fff, var(--ocean-850)); }
.modes .tag { background: #E3F4F5; color: var(--teal-text); }
.ico { background: rgba(252, 101, 78, .12); }
.pricing .best { background: linear-gradient(180deg, rgba(252, 101, 78, .10), #fff 60%); }
.pricing .price { color: var(--night); }
.chips a, .chips span { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .25); color: #fff; }
.chips a:hover { border-color: var(--coral); }
.mascot { margin: 1.5em 0; }
.mascot img { width: 220px; height: auto; display: block; margin: 0 auto; }
/* Question interactive */
.quiz { border: 1px solid var(--line); border-radius: 22px; padding: 20px; background: #fff; box-shadow: 0 20px 40px -32px rgba(0, 26, 78, .5); }
.quiz-title { font: 800 13px/1 var(--display); letter-spacing: .09em; text-transform: uppercase; color: var(--teal-text); margin: 0 0 12px; }
.q { margin: 0; }
.practice .q { border: 1px solid var(--line); border-radius: 18px; padding: 16px 18px; background: #fff; margin: 0 0 22px; }
.practice h3 { margin-top: 1.4em; font-size: 15px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.q-notion { font-size: 13px; color: var(--muted); margin: 0 0 4px; }
.q-prompt { font-weight: 700; color: var(--night); font-size: 18px; margin: 0 0 12px; }
.q-num { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--night); color: #fff; font-size: 14px; margin-right: 10px; vertical-align: 2px; }
.q-choices { list-style: none; padding: 0; margin: 0 0 10px; display: grid; gap: 8px; }
.q-choice { width: 100%; text-align: left; display: flex; gap: 10px; align-items: flex-start; font: inherit; font-size: 16px; color: var(--text); background: var(--ocean-850); border: 1.5px solid transparent; border-radius: 12px; padding: 10px 12px; cursor: pointer; }
.q-choice:hover { border-color: #A9BCD6; }
.q-letter { flex: none; font-weight: 800; color: var(--sea); }
.q-choice.is-correct { background: #E2F6EA; border-color: #2E9E5B; }
.q-choice.is-wrong { background: #FDE8E4; border-color: var(--coral); }
.q.answered .q-choice { cursor: default; }
.q-answer summary { cursor: pointer; color: var(--sea); font-weight: 700; font-size: 15px; }
.q-answer p { margin: 8px 0 0; font-size: 16px; }
.quiz figcaption { margin-top: 12px; }
/* Glossaire */
.glossary { margin: 0; }
.g-term { padding: 14px 0; border-bottom: 1px solid var(--line); }
.g-term dt { font-weight: 800; color: var(--night); }
.g-term dd { margin: 4px 0 0; }
.g-level { font-size: 12px; font-weight: 700; color: var(--teal-text); background: #E3F4F5; padding: 2px 8px; border-radius: 999px; margin-left: 6px; vertical-align: 2px; }
/* Loi de Boyle */
.boyle { border: 1px solid var(--line); border-radius: 24px; padding: 18px; background: #fff; }
.boyle .depth-title { color: var(--night); }
.boyle-stage { position: relative; height: 260px; border-radius: 16px; overflow: hidden; background: linear-gradient(180deg, #7FD6DC, #1B4FBF); }
.boyle-water { position: absolute; inset: 0; background: var(--night); opacity: .15; transition: opacity .2s; }
.boyle-balloon { position: absolute; left: 50%; top: 50%; width: 150px; height: 150px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #FFB3A6, var(--coral) 55%, #C94A35); box-shadow: 0 10px 30px rgba(0, 0, 0, .3); transform: translate(-50%, -50%) scale(1); transition: transform .2s; }
.boyle-readout { position: absolute; left: 12px; bottom: 12px; display: grid; gap: 2px; padding: 8px 12px; border-radius: 12px; background: rgba(0, 26, 78, .78); color: #fff; font-size: 13.5px; }
.boyle-readout .b-depth { font: 800 18px/1.1 var(--display); }
.boyle .depth-control > span:first-child { color: var(--night); }
.screens img { border-color: var(--line); }
.final .badges img { filter: none; }
/* Focus visible : bleu sur fond clair, soleil sur fond bleu nuit */
:focus-visible { outline-color: var(--sea); }
.home .hero :focus-visible, .final :focus-visible, .foot :focus-visible, .cta :focus-visible, .sticky :focus-visible { outline-color: var(--sun); }
.vh { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
/* Menu mobile (sous 860 px, la barre de navigation est masquée) */
.menu { display: none; }
@media (max-width: 860px) {
  .menu { display: block; position: static; }
  .menu summary { list-style: none; display: grid; place-items: center; width: 44px; height: 44px; margin-right: -8px; border-radius: 12px; cursor: pointer; }
  .menu summary::-webkit-details-marker { display: none; }
  .menu-icon, .menu-icon::before, .menu-icon::after { display: block; width: 20px; height: 2px; border-radius: 2px; background: var(--night); transition: transform .2s, opacity .2s; }
  .menu-icon { position: relative; }
  .menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; }
  .menu-icon::before { top: -6px; } .menu-icon::after { top: 6px; }
  .menu[open] .menu-icon { background: transparent; }
  .menu[open] .menu-icon::before { transform: translateY(6px) rotate(45deg); }
  .menu[open] .menu-icon::after { transform: translateY(-6px) rotate(-45deg); }
  .menu-panel { position: absolute; left: 0; right: 0; top: 100%; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 24px 40px -24px rgba(0, 26, 78, .45); padding: 6px 20px 16px; }
  .menu-panel nav a { display: block; padding: 13px 0; border-bottom: 1px solid var(--ocean-850); color: var(--night); font-weight: 700; font-size: 17px; text-decoration: none; }
  .menu-panel nav a[aria-current] { color: var(--coral-text); }
  .menu-panel .langs ul { margin-top: 12px; }
  .menu-panel .langs a { color: var(--muted); font-size: 15px; }
  .menu-panel .langs a[aria-current] { color: var(--night); }
  .top-in { gap: 12px; }
}
/* Verdict après une réponse */
.q-verdict { margin: 0; font-weight: 800; font-size: 15.5px; }
.q-verdict:not(:empty) { margin: 2px 0 8px; }
.q-verdict.ok { color: #1E7A45; }
.q-verdict.ko { color: var(--coral-text); }
.practice + * { margin-top: 1.6em; }
.box-tldr .box-label { color: var(--teal-text); }
@media (max-width: 760px) { .box-tldr p { font-size: 17px; } .crumbs { font-size: 13.5px; } }
.hero-grid > *, .split > * { min-width: 0; }
/* Glossaire : index alphabétique collant sous l'en-tête */
.az { position: sticky; top: 64px; z-index: 5; background: rgba(245, 248, 252, .94); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); margin: 0 -4px 8px; padding: 8px 4px; border-bottom: 1px solid var(--line); }
.az ul { list-style: none; display: flex; flex-wrap: wrap; gap: 2px; margin: 0; padding: 0; }
.az a { display: grid; place-items: center; min-width: 32px; height: 32px; border-radius: 8px; font-weight: 800; text-decoration: none; color: var(--night); }
.az a:hover { background: var(--ocean-800); }
.az-letter { font-size: 22px; margin: 1.4em 0 0; padding-bottom: 4px; border-bottom: 2px solid var(--coral); scroll-margin-top: 120px; }
.g-term { scroll-margin-top: 120px; }
/* Méga Quiz : capture du mode télé dans un cadre d'écran, Octo qui déborde du coin inférieur gauche */
.megatv { position: relative; margin: 28px 0 8px 40px; }
.tv-screen { position: relative; background: #0A0F1C; padding: 10px; border-radius: 20px; box-shadow: 0 30px 60px -28px rgba(0, 26, 78, .55), inset 0 0 0 1px rgba(255, 255, 255, .06); }
.tv-screen img { display: block; width: 100%; height: auto; border-radius: 11px; }
.tv-octo { position: absolute; left: -46px; bottom: -34px; width: 27%; max-width: 165px; height: auto; transform: rotate(-8deg); filter: drop-shadow(0 18px 22px rgba(0, 26, 78, .35)); pointer-events: none; }
.megatv figcaption { margin: 14px 0 0 24%; font-size: 14px; color: var(--muted); }
@media (max-width: 860px) { .megatv { margin: 18px 0 30px 22px; } .tv-octo { left: -30px; bottom: -26px; width: 26%; } .megatv figcaption { margin-left: 24%; } }
@media (max-width: 860px) { #mega .split > div:first-child { order: 2; } }
/* ---- Mascotte vivante (demande de Bruno, 12/11/2026, comme sur le site de Palier) ---- */
@keyframes bob { 0%, 100% { transform: translateY(0) rotate(-6deg); } 50% { transform: translateY(-8px) rotate(-3deg); } }
@keyframes pop { 0% { transform: scale(.6) rotate(-10deg); } 60% { transform: scale(1.12) rotate(4deg); } 100% { transform: scale(1) rotate(0); } }
.cta { position: relative; padding-left: 128px; }
.cta-icon.cta-mascot { position: absolute; left: -22px; top: -30px; width: 136px; height: auto; border-radius: 0; box-shadow: none; filter: drop-shadow(0 14px 18px rgba(0, 26, 78, .45)); }
@media (max-width: 520px) { .cta { padding-left: 22px; padding-top: 74px; } .cta-icon.cta-mascot { left: 50%; margin-left: -54px; top: -46px; width: 108px; } }
.quiz { position: relative; }
.quiz-mascot { position: absolute; right: -30px; top: -50px; width: 112px; height: auto; filter: drop-shadow(0 10px 14px rgba(0, 26, 78, .3)); pointer-events: none; }
.quiz-mascot.pop { animation: pop .45s ease-out; }
.quiz .quiz-title { padding-right: 64px; }
@media (max-width: 520px) { .quiz-mascot { right: -10px; top: -34px; width: 78px; } }
.screens-wrap { position: relative; padding-top: 18px; }
.screens-mascot { position: absolute; right: 8px; top: -64px; width: 120px; height: auto; z-index: 2; animation: bob 4s ease-in-out infinite; filter: drop-shadow(0 14px 18px rgba(0, 26, 78, .3)); pointer-events: none; }
.hero-phone { position: relative; margin: 10px auto 30px; width: min(300px, 80%); }
.phone { background: #050B16; padding: 9px; border-radius: 46px; box-shadow: 0 40px 70px -30px rgba(0, 0, 0, .65), inset 0 0 0 1.5px rgba(255, 255, 255, .12); transform: rotate(4deg); }
.phone img { display: block; width: 100%; height: auto; border-radius: 38px; }
.phone-mascot { position: absolute; left: -96px; bottom: -36px; width: 62%; height: auto; animation: bob 5s ease-in-out infinite; filter: drop-shadow(0 26px 30px rgba(0, 0, 0, .45)); }
@media (max-width: 860px) { .hero-phone { width: min(230px, 62%); margin-top: 24px; } .phone-mascot { left: -70px; bottom: -24px; width: 60%; } }
.final-mascot { animation: bob 5s ease-in-out infinite; }