/* ==========================================================================
   NVH Spectro — design system (site marketing + docs)
   Palette = tokens réels de l'app (theme/Color.kt)
   ========================================================================== */
:root{
  --bg:#0A0E13; --surface:#141A22; --surface2:#1C2430; --high:#232D3B;
  --text:#E6EDF3; --muted:#A9B6C4; --outline:#3B4756;
  --primary:#4FC3F7; --on-primary:#00293D;
  --good:#00E676; --warn:#FFB300; --bad:#FF5252; --accent:#FF9100;
  --radius:14px; --maxw:1160px;
  --font:'Inter',-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:'SF Mono',ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
code,pre{font-family:var(--mono);font-size:.9em}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(10,14,19,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--outline)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-brand{display:flex;align-items:center;gap:11px;color:var(--text);font-weight:800;font-size:17px}
.nav-brand img{border-radius:8px}
.nav-links{display:flex;gap:4px;font-size:14.5px;font-weight:600}
.nav-links a{color:var(--muted);padding:8px 13px;border-radius:9px}
.nav-links a:hover{color:var(--text);background:var(--surface2);text-decoration:none}
.nav-links a.active{color:var(--primary);background:rgba(79,195,247,.10)}
.nav-cta{background:var(--primary);color:var(--on-primary)!important;padding:8px 16px!important;border-radius:10px;font-weight:700}
.nav-cta:hover{background:#6ED0FF}

/* ---------- hero ---------- */
.hero{padding:84px 0 64px;position:relative;overflow:hidden;border-bottom:1px solid var(--outline)}
.hero-bg{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 55% 45% at 72% 18%,rgba(79,195,247,.11),transparent 65%),
             radial-gradient(ellipse 40% 40% at 15% 85%,rgba(0,230,118,.06),transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;position:relative}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.badge{display:inline-flex;align-items:center;gap:6px;background:var(--surface2);border:1px solid var(--outline);border-radius:999px;padding:5px 13px;font-size:13px;font-weight:600;color:var(--muted)}
.badge b{color:var(--text)}
.badge-good{border-color:rgba(0,230,118,.4);color:var(--good)}
h1{font-size:clamp(34px,5.2vw,58px);font-weight:800;letter-spacing:-.03em;line-height:1.07;margin-bottom:20px}
.hl{color:var(--primary)}
.hero p.sub{font-size:18.5px;color:var(--muted);max-width:540px;margin-bottom:30px}
.btn{display:inline-flex;align-items:center;gap:10px;border-radius:12px;padding:13px 24px;font-weight:700;font-size:15.5px;transition:transform .16s,box-shadow .16s,background .16s}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--primary);color:var(--on-primary);box-shadow:0 10px 28px rgba(79,195,247,.28)}
.btn-primary:hover{background:#6ED0FF}
.btn-ghost{border:1px solid var(--outline);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary)}

/* ---------- sections ---------- */
section.block{padding:84px 0}
section.block.alt{background:var(--surface);border-top:1px solid var(--outline);border-bottom:1px solid var(--outline)}
.kicker{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--primary);margin-bottom:13px}
.kicker.warn{color:var(--warn)}
h2{font-size:clamp(26px,3.8vw,36px);font-weight:800;letter-spacing:-.02em;margin-bottom:15px}
.lead{color:var(--muted);font-size:17.5px;max-width:760px;margin-bottom:38px}

/* ---------- cards ---------- */
.cards{display:grid;gap:20px}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surface2);border:1px solid var(--outline);border-radius:var(--radius);padding:26px;transition:border-color .18s,transform .18s}
.card:hover{border-color:var(--primary);transform:translateY(-3px)}
.card .ico{font-size:26px;margin-bottom:10px;display:block}
.card h3{font-size:17px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}
.card p b{color:var(--text)}

/* ---------- code ---------- */
.codebox{background:#0D1420;border:1px solid var(--outline);border-radius:var(--radius);padding:22px 24px;overflow-x:auto;position:relative}
.codebox pre{color:#C9D6E3;font-size:13.5px;line-height:1.9;white-space:pre}
.codebox .cm{color:#5A6B7E}
.copy-btn{position:absolute;top:10px;right:10px;background:var(--surface2);border:1px solid var(--outline);color:var(--muted);border-radius:8px;padding:5px 11px;font-size:12px;font-weight:600;cursor:pointer;font-family:var(--font)}
.copy-btn:hover{color:var(--text);border-color:var(--primary)}

/* ---------- docs layout ---------- */
.docs-main{padding:48px 0 72px}
.docs-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:44px;align-items:start}
.docs-toc{position:sticky;top:88px;display:flex;flex-direction:column;gap:2px}
.toc-title{font-size:11.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.toc-link{color:var(--muted);font-size:13.5px;padding:6px 12px;border-left:2px solid var(--outline);display:flex;justify-content:space-between;gap:8px}
.toc-link:hover{color:var(--text);text-decoration:none;border-left-color:var(--primary)}
.toc-link.active{color:var(--primary);border-left-color:var(--primary);background:rgba(79,195,247,.07)}
.toc-n{color:var(--outline);font-weight:600}
.toc-stats{color:var(--outline);font-size:11.5px;margin-top:14px;padding:0 12px}
.docs-toc input{margin-top:10px;background:var(--surface2);border:1px solid var(--outline);color:var(--text);border-radius:9px;padding:8px 12px;font-size:13px;font-family:var(--font);outline:none}
.docs-toc input:focus{border-color:var(--primary)}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.docs-content h1{font-size:clamp(28px,4vw,40px);margin-bottom:14px}
.docs-content h2{font-size:23px;margin:44px 0 12px;padding-top:10px}
.docs-content h3{font-size:17px;margin:26px 0 8px;color:var(--primary)}
.docs-content p{color:var(--muted);margin-bottom:14px;font-size:15.5px;max-width:760px}
.docs-content p b,.docs-content li b{color:var(--text)}
.docs-content ul,.docs-content ol{color:var(--muted);margin:0 0 14px 22px;font-size:15px}
.docs-content li{margin-bottom:6px}
.docs-content code{background:var(--surface2);border:1px solid var(--outline);border-radius:6px;padding:1px 7px;font-size:.86em;color:#C9D6E3}
.docs-content pre code{background:none;border:none;padding:0}
.callout{border-left:3px solid var(--primary);background:var(--surface);border-radius:0 10px 10px 0;padding:14px 18px;margin:20px 0;font-size:14.5px;color:var(--muted)}
.callout.warn{border-left-color:var(--warn)}
.callout.good{border-left-color:var(--good)}
.callout b{color:var(--text)}
table.tbl{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
table.tbl th{background:var(--surface2);text-align:left;font-weight:700}
table.tbl th,table.tbl td{border:1px solid var(--outline);padding:9px 13px;color:var(--muted)}
table.tbl td:first-child{color:var(--text);font-weight:600;white-space:nowrap}
.pager{display:flex;justify-content:space-between;margin-top:52px;padding-top:22px;border-top:1px solid var(--outline)}
.pager a{font-weight:600;font-size:14.5px}

/* ---------- reference ---------- */
.ref-type{background:var(--surface);border:1px solid var(--outline);border-radius:11px;margin-bottom:10px;overflow:hidden}
.ref-type summary{cursor:pointer;padding:13px 18px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;list-style:none}
.ref-type summary::-webkit-details-marker{display:none}
.ref-type summary::before{content:"▸";color:var(--muted);transition:transform .15s}
.ref-type[open] summary::before{transform:rotate(90deg)}
.ref-kind{background:var(--high);color:var(--muted);border-radius:6px;padding:2px 9px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.ref-name{font-weight:700;font-size:15px}
.ref-file{color:var(--outline);font-size:12px;font-family:var(--mono);margin-left:auto}
.ref-fun{padding:10px 18px;border-top:1px solid rgba(59,71,86,.45)}
.ref-sig{display:inline-block;background:#0D1420;border:1px solid var(--outline);border-radius:7px;padding:3px 10px;font-size:12.5px;color:#7FD4FF}
.ref-doc{color:var(--muted);font-size:13.5px;margin-top:6px}
.ref-typedoc{padding:0 18px 12px;font-size:13.5px;color:var(--muted)}
.ref-muted{font-style:italic;color:var(--outline)}
.ref-area{border-bottom:1px solid var(--outline);padding-bottom:10px!important}

/* ---------- figures / svg ---------- */
figure.shot{margin:48px 0 0}
figure.shot img{border-radius:var(--radius);border:1px solid var(--outline);box-shadow:0 20px 60px rgba(0,0,0,.5)}
figure.shot figcaption{color:var(--muted);font-size:13.5px;margin-top:12px;text-align:center}
.diagram{background:var(--surface);border:1px solid var(--outline);border-radius:var(--radius);padding:30px;overflow-x:auto;margin:8px 0 24px}

/* ---------- phone mockup ---------- */
.phone{width:300px;border-radius:36px;border:3px solid var(--outline);background:#000;padding:10px;box-shadow:0 30px 80px rgba(79,195,247,.14),0 4px 20px rgba(0,0,0,.6);transform:rotate(2deg)}
.phone img{border-radius:26px;display:block}

/* ---------- footer ---------- */
footer{background:var(--surface);border-top:1px solid var(--outline);padding:44px 0}
.foot-grid{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.foot-note{margin-top:22px;font-size:12.5px;color:var(--muted)}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .cards.c3{grid-template-columns:1fr}
  .cards.c2{grid-template-columns:1fr}
  .docs-grid{grid-template-columns:1fr}
  .docs-toc{position:static;flex-direction:row;flex-wrap:wrap;border-bottom:1px solid var(--outline);padding-bottom:16px;margin-bottom:8px}
  .nav-links a:not(.nav-cta){display:none}
  .phone{transform:none}
}
@media (max-width:560px){
  section.block{padding:60px 0}
  .gates{grid-template-columns:1fr!important}
}

/* --- Page audit UI/UX : notes, gravité, phases ------------------------------
   Préfixe .audit-* : réservé à docs/ui-ux-audit.html, aucune collision possible
   avec les classes existantes. Les couleurs viennent des tokens :root.        */
.audit-grade{font-size:22px;font-weight:800;text-align:center;font-variant-numeric:tabular-nums}
.a-good{color:var(--good)}
.a-ok{color:var(--primary)}
.a-mid{color:var(--warn)}
.a-bad{color:var(--bad)}
.audit-meter{height:5px;background:var(--high);border-radius:3px;overflow:hidden;margin-top:8px}
.audit-meter i{display:block;height:100%;border-radius:3px}
table.tbl td.audit-c{text-align:center;white-space:nowrap}
table.tbl td.audit-w{color:var(--muted);font-weight:400;white-space:normal}
.sev{display:inline-block;font-family:var(--mono);font-size:11.5px;font-weight:700;letter-spacing:.05em;padding:3px 8px;border-radius:4px;border:1px solid currentColor;white-space:nowrap}
.sev-block{color:var(--bad)}
.sev-major{color:var(--warn)}
.sev-mod{color:var(--primary)}
.sev-keep{color:var(--good)}
.finding{background:var(--surface);border:1px solid var(--outline);border-left:4px solid var(--outline);border-radius:8px;padding:20px 22px;margin:16px 0}
.finding.block{border-left-color:var(--bad)}
.finding.major{border-left-color:var(--warn)}
.finding h3{margin:10px 0 0;font-size:19px;line-height:1.35}
.finding .loc{font-family:var(--mono);font-size:12.5px;color:var(--muted);margin:8px 0 0;word-break:break-word}
.finding p{margin:12px 0 0}
.finding ul,.finding ol{margin:12px 0 0}
.finding .fix{border-top:1px solid var(--outline);padding-top:12px;margin-top:14px}
.finding .fix b{color:var(--primary)}
.phase{display:grid;grid-template-columns:64px 1fr;background:var(--surface);border:1px solid var(--outline);border-radius:8px;margin:12px 0;overflow:hidden}
.phase-n{display:grid;place-items:center;background:var(--surface2);border-right:1px solid var(--outline);font-size:24px;font-weight:800;color:var(--muted);font-variant-numeric:tabular-nums}
.phase:first-of-type .phase-n{background:rgba(79,195,247,.14);color:var(--primary)}
.phase-b{padding:18px 22px}
.phase-b h3{margin:0;font-size:17px}
.phase-b .ids{font-family:var(--mono);font-size:12px;color:var(--muted);margin-top:4px}
.phase-b p{margin:10px 0 0}
.phase-b .gate{margin-top:12px;padding:10px 14px;background:var(--surface2);border-left:3px solid var(--primary);border-radius:0 4px 4px 0;font-size:14px}
.phase-b .gate b{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--primary);margin-bottom:2px}
@media (max-width:560px){
  .phase{grid-template-columns:44px 1fr}
  .phase-n{font-size:18px}
  .finding{padding:16px 16px}
}