/* Landing page — mêmes fondations que l'application (base.css). */
.l-wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.l-nav { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 80%, transparent); backdrop-filter: saturate(1.6) blur(14px); -webkit-backdrop-filter: saturate(1.6) blur(14px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.l-nav.scrolled { border-bottom-color: var(--border); }
.l-nav .l-wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.l-brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.02em; font-size: 16px; }
.l-links { display: none; gap: 24px; font-size: 14px; color: var(--text-2); }
.l-links a:hover { color: var(--text); }
.l-nav .grow { flex: 1; }
@media (min-width: 860px) { .l-links { display: flex; } }

.logo-mark { width: 28px; height: 28px; border-radius: 8px; background: var(--ink); color: var(--on-ink); display: grid; place-items: center; flex: none; }
.logo-mark svg { width: 16px; height: 16px; }
.icon { width: 18px; height: 18px; flex: none; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 16px; border-radius: 10px; font-size: 14px; font-weight: 520; letter-spacing: -0.01em; white-space: nowrap; border: 1px solid transparent; transition: opacity .15s, background .15s, transform .12s; }
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--ink); color: var(--on-ink); box-shadow: var(--shadow-sm); }
.btn-primary:hover { opacity: .9; }
.btn-secondary { background: var(--surface); border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.btn-secondary:hover { background: var(--surface-hover); }
.btn-ghost { color: var(--text-2); }
.btn-ghost:hover { color: var(--text); background: var(--surface-hover); }
.btn-lg { height: 50px; padding: 0 24px; font-size: 15.5px; border-radius: 12px; }

/* Hero */
.hero { position: relative; padding: 72px 0 40px; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px); background-size: 56px 56px; mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%); opacity: .7; pointer-events: none; }
.hero::after { content: ''; position: absolute; left: 50%; top: -220px; width: 900px; height: 520px; transform: translateX(-50%); background: radial-gradient(closest-side, var(--accent-soft), transparent); pointer-events: none; }
.hero > * { position: relative; z-index: 1; }
.hero-text { text-align: center; max-width: 820px; margin: 0 auto; }
.hero-pill { display: inline-flex; align-items: center; gap: 8px; height: 30px; padding: 0 12px 0 6px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); font-size: 13px; color: var(--text-2); margin-bottom: 28px; }
.hero-pill b { height: 20px; padding: 0 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-text); font-size: 11.5px; font-weight: 600; display: inline-flex; align-items: center; }
.hero h1 { font-size: clamp(38px, 7vw, 72px); line-height: 1.02; letter-spacing: -0.045em; font-weight: 640; }
.hero h1 .soft { color: var(--text-3); }
.hero p.lead { font-size: clamp(16px, 2.2vw, 19px); color: var(--text-2); margin: 24px auto 34px; max-width: 600px; line-height: 1.55; }
.hero-ctas { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 16px; font-size: 13px; color: var(--text-3); }

/* Aperçu produit */
.preview { margin: 56px auto 0; max-width: 1080px; perspective: 2000px; }
.frame { border-radius: 18px; border: 1px solid var(--border-strong); background: var(--surface-2); box-shadow: var(--shadow-lg), 0 40px 120px -40px rgba(79,70,229,.25); overflow: hidden; transform: rotateX(8deg); transform-origin: top center; transition: transform 1s var(--ease); }
.preview.in .frame { transform: none; }
.frame-bar { display: flex; align-items: center; gap: 6px; height: 38px; padding: 0 14px; border-bottom: 1px solid var(--border); background: var(--surface); }
.frame-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.frame-bar span { margin: 0 auto; font-size: 12px; color: var(--text-3); font-family: var(--mono); }
.mock { display: grid; grid-template-columns: 1fr; gap: 12px; padding: 16px; }
.mock-side { display: none; }
@media (min-width: 900px) {
  .mock { grid-template-columns: 190px 1.5fr 1fr; padding: 0; gap: 0; }
  .mock-side { display: flex; flex-direction: column; gap: 2px; padding: 16px 10px; border-right: 1px solid var(--border); font-size: 13px; color: var(--text-2); }
  .mock-side div { display: flex; align-items: center; gap: 9px; height: 30px; padding: 0 9px; border-radius: 7px; }
  .mock-side div.on { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--border); font-weight: 520; }
  .mock-side .icon { width: 15px; height: 15px; }
  .mock-col { padding: 18px; display: flex; flex-direction: column; gap: 12px; }
  .mock-col + .mock-col { padding-left: 0; }
}
.m-card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px; box-shadow: var(--shadow-sm); }
.m-title { font-size: 12.5px; font-weight: 560; color: var(--text-2); display: flex; align-items: center; gap: 6px; margin-bottom: 12px; }
.m-title .icon { width: 14px; height: 14px; color: var(--text-3); }
.m-daily { background: var(--ink); color: var(--on-ink); border-radius: 14px; padding: 20px; position: relative; overflow: hidden; }
.m-daily::before { content: ''; position: absolute; inset: 0; background: radial-gradient(120% 90% at 100% 0%, rgba(124,116,242,.35), transparent 55%); }
.m-daily > * { position: relative; }
.m-daily small { font-size: 10.5px; letter-spacing: .07em; text-transform: uppercase; opacity: .55; font-weight: 560; }
.m-daily h3 { font-size: 19px; margin: 6px 0 12px; letter-spacing: -.025em; }
.m-daily .meta { display: flex; gap: 14px; font-size: 12px; opacity: .7; margin-bottom: 16px; }
.m-daily .go { display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px; border-radius: 9px; background: var(--on-ink); color: var(--ink); font-size: 13px; font-weight: 560; }
.m-daily .fl { position: absolute; top: 18px; right: 18px; display: flex; align-items: center; gap: 4px; font-weight: 600; font-size: 14px; }
.m-daily .fl .icon { width: 16px; height: 16px; color: var(--flame); fill: var(--flame); }
.m-row { display: flex; align-items: center; gap: 10px; font-size: 12.5px; padding: 7px 0; border-top: 1px solid var(--border); }
.m-row:first-of-type { border-top: 0; }
.m-row .g { flex: 1; min-width: 0; }
.dot { width: 7px; height: 7px; border-radius: 3px; flex: none; }
.prio { font-size: 10.5px; font-weight: 560; padding: 2px 7px; border-radius: 5px; }
.prio.h { background: var(--danger-soft); color: var(--danger); } .prio.m { background: var(--warning-soft); color: var(--warning); } .prio.l { background: var(--bg-sunken); color: var(--text-2); }
.bar { height: 5px; border-radius: 9px; background: var(--bg-sunken); overflow: hidden; }
.bar span { display: block; height: 100%; border-radius: inherit; }
.m-subj { display: flex; flex-direction: column; gap: 11px; }
.m-subj .t { display: flex; justify-content: space-between; font-size: 12.5px; margin-bottom: 5px; }
.m-ring { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.m-ring svg { transform: rotate(-90deg); }
.m-ring b { font-size: 26px; letter-spacing: -.04em; font-weight: 620; }
.m-exam { display: flex; align-items: center; gap: 12px; font-size: 12.5px; }
.m-exam b { font-size: 20px; letter-spacing: -.03em; line-height: 1; }

/* Sections */
.l-section { padding: 96px 0 0; }
.l-head { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.l-eyebrow { font-size: 12.5px; font-weight: 560; color: var(--accent-text); letter-spacing: .02em; margin-bottom: 12px; }
.l-head h2 { font-size: clamp(28px, 4.4vw, 44px); letter-spacing: -.04em; line-height: 1.08; }
.l-head p { color: var(--text-2); margin-top: 14px; font-size: 16.5px; }

/* Matière → Week → révision */
.flow { display: grid; gap: 12px; align-items: stretch; }
@media (min-width: 860px) { .flow { grid-template-columns: 1fr auto 1fr auto 1.2fr; } }
.flow-arrow { display: none; align-self: center; color: var(--text-3); }
@media (min-width: 860px) { .flow-arrow { display: block; } }
.flow .m-card { padding: 18px; }
.subj { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 10px; font-size: 13px; font-weight: 500; }
.subj.on { background: var(--accent-soft); }
.subj .tile { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; font-size: 11px; font-weight: 600; flex: none; }
.wk { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 10px; font-size: 13px; }
.wk.on { background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--border); }
.wk .n { width: 30px; height: 30px; border-radius: 8px; background: var(--bg-sunken); display: grid; place-items: center; font-weight: 600; font-size: 12px; }
.st { margin-left: auto; font-size: 11px; font-weight: 520; }
.tools { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tool { display: flex; align-items: center; gap: 8px; padding: 12px; border-radius: 10px; border: 1px solid var(--border); font-size: 13px; font-weight: 500; background: var(--surface-2); }
.tool .icon { width: 16px; height: 16px; color: var(--accent-text); }

/* Bento */
.bento { display: grid; gap: 12px; }
@media (min-width: 720px) { .bento { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .bento { grid-template-columns: repeat(6, 1fr); gap: 14px; } .b-3 { grid-column: span 3; } .b-2 { grid-column: span 2; } .b-4 { grid-column: span 4; } }
.b { background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 22px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; min-height: 260px; overflow: hidden; }
.b h3 { font-size: 16px; letter-spacing: -.02em; margin-top: auto; padding-top: 18px; }
.b p { font-size: 13.5px; color: var(--text-2); margin-top: 4px; line-height: 1.5; }
.b .vis { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.q-opt { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 11px; border: 1px solid var(--border-strong); font-size: 13px; margin-top: 7px; background: var(--surface); }
.q-opt .k { width: 22px; height: 22px; border-radius: 6px; background: var(--bg-sunken); display: grid; place-items: center; font-size: 11px; font-weight: 600; font-family: var(--mono); color: var(--text-3); }
.q-opt.ok { border-color: var(--success); background: var(--success-soft); }
.q-opt.ok .k { background: var(--success); color: #fff; }
.q-opt.ko { border-color: var(--danger); background: var(--danger-soft); }
.q-opt.ko .k { background: var(--danger); color: #fff; }
.sheet { border-radius: 12px; border: 1px solid var(--border); padding: 14px; background: var(--surface-2); font-size: 12.5px; }
.sheet .k { display: inline-block; font-size: 10.5px; font-weight: 560; padding: 2px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent-text); margin-bottom: 8px; }
.sheet code { font-family: var(--mono); font-size: 13px; display: block; padding: 10px; margin: 8px 0; border-radius: 8px; background: var(--surface); text-align: center; }
.flame-n { display: flex; align-items: center; gap: 10px; font-size: 44px; font-weight: 640; letter-spacing: -.05em; }
.flame-n .icon { width: 40px; height: 40px; color: var(--flame); fill: var(--flame); }
.dots { display: flex; gap: 5px; margin-top: 14px; flex-wrap: wrap; }
.dots i { width: 16px; height: 16px; border-radius: 5px; background: var(--bg-sunken); }
.dots i.on { background: var(--flame); }
.phase-l { display: flex; align-items: center; gap: 10px; font-size: 12.5px; padding: 6px 0; }
.phase-l .n { width: 22px; height: 22px; border-radius: 7px; background: var(--bg-sunken); display: grid; place-items: center; font-size: 11px; font-weight: 600; }
.phase-l.on .n { background: var(--accent); color: #fff; }
.phase-l.done .n { background: var(--success); color: #fff; }
.phase-l span:last-child { margin-left: auto; color: var(--text-3); font-variant-numeric: tabular-nums; }
.duel { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 10px; padding: 14px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--border); }
.duel .p { display: flex; flex-direction: column; align-items: center; gap: 6px; font-size: 12.5px; }
.duel .p b { font-size: 30px; letter-spacing: -.04em; line-height: 1; }
.av { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 600; color: #fff; }
.chat-b { display: flex; gap: 8px; font-size: 12.5px; margin-top: 10px; }
.chat-b .t { background: var(--surface-2); border: 1px solid var(--border); padding: 8px 11px; border-radius: 4px 12px 12px 12px; }
.chat-b b { font-size: 12px; display: block; margin-bottom: 2px; }
.voice { display: flex; align-items: center; gap: 8px; margin-top: 12px; padding: 9px 11px; border-radius: 10px; background: var(--accent-soft); font-size: 12.5px; font-weight: 500; }
.stack-av { display: flex; margin-left: auto; }
.stack-av .av { width: 22px; height: 22px; font-size: 10px; margin-left: -6px; box-shadow: 0 0 0 2px var(--surface); }
.timer { width: 120px; height: 120px; margin: 0 auto; position: relative; }
.timer svg { transform: rotate(-90deg); }
.timer b { position: absolute; inset: 0; display: grid; place-items: center; font-size: 26px; font-weight: 500; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.lb { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 10px; font-size: 12.5px; }
.lb.me { background: var(--accent-soft); }
.lb .r { width: 16px; color: var(--text-3); font-weight: 600; font-variant-numeric: tabular-nums; }
.lb b { margin-left: auto; font-variant-numeric: tabular-nums; }
.plan-l { display: flex; align-items: center; gap: 10px; font-size: 12.5px; padding: 7px 0; border-top: 1px solid var(--border); }
.plan-l:first-child { border-top: 0; }
.plan-l .tm { font-family: var(--mono); font-size: 11px; color: var(--text-3); width: 36px; }
.plan-l .bar-v { width: 3px; height: 26px; border-radius: 2px; }
.plan-l span:last-child { margin-left: auto; color: var(--text-2); }
.curve-svg { width: 100%; height: auto; }

/* CTA final */
.final { margin: 110px 0 0; padding: 64px 24px; text-align: center; border-radius: 24px; background: var(--ink); color: var(--on-ink); position: relative; overflow: hidden; }
.final::before { content: ''; position: absolute; inset: 0; background: radial-gradient(80% 100% at 50% 0%, rgba(124,116,242,.35), transparent 60%); }
.final > * { position: relative; }
.final h2 { font-size: clamp(28px, 4.6vw, 46px); letter-spacing: -.04em; line-height: 1.08; }
.final p { opacity: .65; margin: 14px auto 30px; max-width: 460px; }
.final .btn-primary { background: var(--on-ink); color: var(--ink); }

.l-foot { padding: 48px 0 40px; display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-3); }
.l-foot a:hover { color: var(--text); }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } .frame { transform: none; } }
@media (max-width: 520px) {
  .l-nav .l-wrap { gap: 12px; }
  .l-nav .btn-ghost { display: none; }
}