/* QoLab — design system. Obsidian + molten gold, PoE loot-rarity accents.
   Dark is chosen by the physical scene: this runs beside a dark game, at night. */
@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,300..800&family=JetBrains+Mono:wght@500;700&display=swap');

:root {
  --bg:        oklch(0.165 0.012 265);
  --bg-2:      oklch(0.205 0.014 265);
  --bg-3:      oklch(0.255 0.016 265);
  --ink:       oklch(0.945 0.010 90);
  --muted:     oklch(0.740 0.014 265);
  --line:      oklch(1 0 0 / 0.10);
  --line-2:    oklch(1 0 0 / 0.16);

  --gold:      oklch(0.820 0.135 82);
  --gold-2:    oklch(0.720 0.150 68);
  --gold-ink:  oklch(0.220 0.060 70);

  /* PoE item-rarity spectrum — used meaningfully in the Mod Colors demo */
  --r-normal:  oklch(0.860 0.005 250);
  --r-magic:   oklch(0.720 0.135 258);
  --r-rare:    oklch(0.890 0.150 102);
  --r-unique:  oklch(0.680 0.130 58);
  --r-danger:  oklch(0.640 0.190 26);
  --r-good:    oklch(0.780 0.150 152);

  --maxw: 1140px;
  --radius: 12px;
  --radius-lg: 16px;

  --z-sticky: 100;
  --z-dialog: 400;
  --z-toast: 600;

  --ease: cubic-bezier(0.16, 1, 0.3, 1); /* ease-out-expo-ish */
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Bricolage Grotesque', system-ui, sans-serif;
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.025em;
  text-wrap: balance;
  margin: 0;
}
h1 { font-size: clamp(2.6rem, 1.6rem + 4.4vw, 5rem); }
h2 { font-size: clamp(1.9rem, 1.3rem + 2.4vw, 3rem); letter-spacing: -0.028em; }
h3 { font-size: clamp(1.2rem, 1.05rem + 0.7vw, 1.5rem); }
p  { text-wrap: pretty; }
p.lead { font-size: clamp(1.1rem, 1rem + 0.6vw, 1.35rem); color: var(--muted); max-width: 60ch; }

.wrap { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }
.gold { color: var(--gold); }
.muted { color: var(--muted); }
section { padding-block: clamp(4rem, 2.5rem + 7vw, 8rem); }

/* ---- header ---- */
.hdr {
  position: sticky; top: 0; z-index: var(--z-sticky);
  backdrop-filter: blur(10px);
  background: color-mix(in oklch, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.hdr .wrap { display: flex; align-items: center; gap: 1.5rem; height: 66px; }
.brand { display: flex; align-items: baseline; gap: 0.5rem; font-weight: 800; letter-spacing: -0.03em; font-size: 1.35rem; text-decoration: none; }
.brand .qo { color: var(--ink); }
.brand .lab { color: var(--gold); }
.hdr nav { display: flex; gap: 1.5rem; margin-left: auto; align-items: center; }
.hdr nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; transition: color 0.2s var(--ease); }
.hdr nav a:hover { color: var(--ink); }
.lang { display: inline-flex; border: 1px solid var(--line-2); border-radius: 999px; overflow: hidden; }
.lang button { background: none; border: 0; color: var(--muted); font: inherit; font-size: 0.82rem; padding: 0.28rem 0.7rem; cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--gold); color: var(--gold-ink); font-weight: 700; }

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font: inherit; font-weight: 700; text-decoration: none; cursor: pointer;
  padding: 0.85rem 1.5rem; border-radius: var(--radius); border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn-gold { background: var(--gold); color: var(--gold-ink); }
.btn-gold:hover { background: oklch(0.86 0.14 84); transform: translateY(-2px); }
.btn-ghost { border-color: var(--line-2); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ---- hero ---- */
.hero { position: relative; padding-top: clamp(3rem, 2rem + 5vw, 6rem); }
.hero-grid { display: grid; gap: clamp(2.5rem, 1rem + 6vw, 5rem); grid-template-columns: 1fr; align-items: center; }
@media (min-width: 940px) { .hero-grid { grid-template-columns: 1.05fr 0.95fr; } }
.hero .kicker { color: var(--gold); font-weight: 600; letter-spacing: 0.01em; margin: 0 0 1.1rem; font-size: 0.98rem; }
.hero h1 span { color: var(--gold); }
.hero .lead { margin: 1.4rem 0 2rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.9rem; align-items: center; }
.cta-note { color: var(--muted); font-size: 0.88rem; }

/* ---- loot tooltip demo (the product's actual output) ---- */
.tooltip {
  --tt-w: min(94vw, 430px);
  width: var(--tt-w); margin-inline: auto;
  background: linear-gradient(180deg, oklch(0.12 0.01 265), oklch(0.14 0.012 265));
  border: 1px solid var(--line-2); border-radius: 8px;
  box-shadow: 0 24px 60px -20px oklch(0 0 0 / 0.7);
  font-family: 'JetBrains Mono', monospace; font-size: 0.86rem; line-height: 1.5;
  overflow: hidden;
}
.tt-head { text-align: center; padding: 0.7rem 1rem; border-bottom: 1px solid var(--line); }
.tt-head .name { color: var(--r-rare); font-weight: 700; letter-spacing: 0.02em; }
.tt-head .type { color: var(--r-rare); opacity: 0.8; font-size: 0.78rem; }
.tt-body { padding: 0.9rem 1rem 1.1rem; display: grid; gap: 0.28rem; }
.tt-body .sep { height: 1px; background: var(--line); margin: 0.5rem 0; }
.mod { transition: color 0.4s var(--ease); }
.mod.on { }
.m-life  { color: var(--r-good); }
.m-res   { color: var(--r-magic); }
.m-t1    { color: var(--gold); font-weight: 700; }
.m-danger{ color: var(--r-danger); }
.m-dim   { color: oklch(0.55 0.01 265); }
.demo-toggle { display: inline-flex; gap: 0; margin: 1.2rem auto 0; border: 1px solid var(--line-2); border-radius: 999px; overflow: hidden; }
.demo-toggle button { background: none; border: 0; color: var(--muted); font: inherit; font-size: 0.85rem; padding: 0.4rem 1rem; cursor: pointer; }
.demo-toggle button[aria-pressed="true"] { background: var(--bg-3); color: var(--ink); font-weight: 600; }
.demo-cap { text-align: center; color: var(--muted); font-size: 0.82rem; margin-top: 0.8rem; }

/* ---- feature strip ---- */
.features { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); }
.feature { background: var(--bg); padding: 1.8rem; }
.feature h3 { margin-bottom: 0.5rem; }
.feature p { color: var(--muted); margin: 0; font-size: 0.96rem; }
.feature .fnum { font-family: 'JetBrains Mono', monospace; color: var(--gold); font-size: 0.8rem; }

/* ---- app screenshot ---- */
.shot { border: 1px solid var(--line-2); border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 30px 80px -30px oklch(0 0 0 / 0.8); background: var(--bg-2); }
.split { display: grid; gap: clamp(2rem, 1rem + 4vw, 4rem); align-items: center; grid-template-columns: 1fr; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; } .split.rev > :first-child { order: 2; } }

/* ---- pricing ---- */
.tiers { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .tiers { grid-template-columns: 1fr 1fr; } }
.tier { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 2rem; background: var(--bg-2); }
.tier.pro { border-color: var(--gold); background: linear-gradient(180deg, color-mix(in oklch, var(--gold) 8%, var(--bg-2)), var(--bg-2)); }
.tier h3 { font-size: 1.4rem; }
.tier .price { font-size: 2.6rem; font-weight: 800; letter-spacing: -0.03em; margin: 0.6rem 0 0.2rem; }
.tier .price small { font-size: 0.9rem; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.tier ul { list-style: none; padding: 0; margin: 1.4rem 0; display: grid; gap: 0.7rem; }
.tier li { display: flex; gap: 0.6rem; color: var(--muted); align-items: flex-start; }
.tier li::before { content: "◆"; color: var(--gold); font-size: 0.7rem; margin-top: 0.35rem; }
.tier li.no { opacity: 0.55; }
.tier li.no::before { content: "·"; color: var(--muted); }

/* ---- FAQ ---- */
.faq { display: grid; gap: 0; max-width: 760px; }
.faq details { border-bottom: 1px solid var(--line); padding: 0.4rem 0; }
.faq summary { cursor: pointer; padding: 1rem 0; font-weight: 600; font-size: 1.08rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--gold); font-weight: 400; font-size: 1.4rem; line-height: 1; transition: transform 0.25s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--muted); margin: 0 0 1rem; max-width: 68ch; }
.faq .warn { color: var(--r-unique); }

/* ---- footer ---- */
.ftr { border-top: 1px solid var(--line); padding-block: 3rem; color: var(--muted); font-size: 0.9rem; }
.ftr .wrap { display: flex; flex-wrap: wrap; gap: 1.5rem 3rem; align-items: center; justify-content: space-between; }
.ftr img { width: 46px; height: 46px; opacity: 0.9; border-radius: 8px; }
.ftr a { color: var(--muted); text-decoration: none; }
.ftr a:hover { color: var(--gold); }

/* ---- cabinet (account/admin) ---- */
.panel { max-width: 720px; margin: 5rem auto; }
.card { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.4rem, 1rem + 2vw, 2.4rem); }
.field { display: grid; gap: 0.5rem; margin-bottom: 1.1rem; }
.field label { font-size: 0.88rem; color: var(--muted); }
input, select, textarea {
  font: inherit; background: var(--bg); color: var(--ink);
  border: 1px solid var(--line-2); border-radius: var(--radius); padding: 0.75rem 0.9rem; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--gold); outline-offset: 1px; border-color: transparent; }
input::placeholder { color: oklch(0.62 0.01 265); }
.row { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.row > * { flex: 1 1 auto; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 1.2rem 0; }
.stat { background: var(--bg); padding: 1.1rem 1.2rem; }
.stat .k { font-size: 0.78rem; color: var(--muted); }
.stat .v { font-size: 1.4rem; font-weight: 700; margin-top: 0.2rem; }
.badge { display: inline-block; font-size: 0.78rem; font-weight: 700; padding: 0.2rem 0.6rem; border-radius: 999px; }
.badge.pro { background: var(--gold); color: var(--gold-ink); }
.badge.free { background: var(--bg-3); color: var(--muted); }
.badge.ok { background: color-mix(in oklch, var(--r-good) 25%, var(--bg)); color: var(--r-good); }
.badge.bad { background: color-mix(in oklch, var(--r-danger) 25%, var(--bg)); color: var(--r-danger); }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; }
td.mono { font-family: 'JetBrains Mono', monospace; font-size: 0.82rem; }
.toast { position: fixed; left: 50%; bottom: 2rem; transform: translateX(-50%); z-index: var(--z-toast); background: var(--bg-3); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 0.8rem 1.2rem; box-shadow: 0 12px 40px -12px oklch(0 0 0 / 0.7); opacity: 0; transition: opacity 0.3s var(--ease), transform 0.3s var(--ease); pointer-events: none; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }
.toast.err { border-color: var(--r-danger); }
.hide { display: none !important; }
.tablewrap { overflow-x: auto; }

/* ---- entrance motion ---- */
.reveal { opacity: 0; transform: translateY(16px); animation: rise 0.7s var(--ease) forwards; }
.reveal.d1 { animation-delay: 0.06s; }
.reveal.d2 { animation-delay: 0.12s; }
.reveal.d3 { animation-delay: 0.18s; }
@keyframes rise { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; opacity: 1; transform: none; }
  .btn:hover, .btn-gold:hover { transform: none; }
  .mod { transition: none; }
}