/* MostStack landing: tokens, layout, components. Dark by default, light when the system asks. */

:root {
  --bg: #0a0e16;
  --bg-glow: radial-gradient(1200px 600px at 85% -10%, rgba(45, 212, 191, 0.10), transparent 60%),
             radial-gradient(900px 500px at -10% 30%, rgba(56, 189, 248, 0.07), transparent 60%);
  --surface: #111725;
  --surface-2: #161d2e;
  --surface-3: #1e2638;
  --border: rgba(148, 163, 184, 0.12);
  --border-strong: rgba(148, 163, 184, 0.22);
  --text: #eef2f7;
  --text-2: #cbd5e1;
  --muted: #8b97ab;
  --accent: #2dd4bf;
  --accent-2: #38bdf8;
  --accent-hover: #5eead4;
  --accent-text: #04201c;
  --accent-grad: linear-gradient(135deg, #2dd4bf 0%, #38bdf8 100%);
  --accent-soft: rgba(45, 212, 191, 0.12);
  --accent-soft-text: #5eead4;
  --ok: #4ade80;
  --ok-soft: rgba(74, 222, 128, 0.12);
  --warn: #fbbf24;
  --warn-soft: rgba(251, 191, 36, 0.12);
  --bad: #f87171;
  --bad-soft: rgba(248, 113, 113, 0.12);
  --ring: 0 0 0 3px rgba(45, 212, 191, 0.28);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 8px 24px -12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 30px 60px -20px rgba(0, 0, 0, 0.7);
  --radius: 16px;
  --radius-sm: 10px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f4f6fa;
    --bg-glow: radial-gradient(1200px 600px at 85% -10%, rgba(13, 148, 136, 0.08), transparent 60%),
               radial-gradient(900px 500px at -10% 30%, rgba(2, 132, 199, 0.05), transparent 60%);
    --surface: #ffffff;
    --surface-2: #f3f5f9;
    --surface-3: #e8ecf2;
    --border: #e3e8ef;
    --border-strong: #cfd6e0;
    --text: #0f172a;
    --text-2: #334155;
    --muted: #64748b;
    --accent: #0d9488;
    --accent-2: #0284c7;
    --accent-hover: #0f766e;
    --accent-text: #ffffff;
    --accent-grad: linear-gradient(135deg, #0d9488 0%, #0284c7 100%);
    --accent-soft: #e6f6f4;
    --accent-soft-text: #0f766e;
    --ok: #15803d;
    --ok-soft: #e8f7ee;
    --warn: #b45309;
    --warn-soft: #fef5e6;
    --bad: #b91c1c;
    --bad-soft: #fdeeee;
    --ring: 0 0 0 3px rgba(13, 148, 136, 0.22);
    --shadow: 0 1px 2px rgba(15, 23, 42, 0.05), 0 6px 20px -10px rgba(15, 23, 42, 0.12);
    --shadow-lg: 0 30px 60px -20px rgba(15, 23, 42, 0.25);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg-glow), var(--bg);
  color: var(--text);
  font: 16px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin: 0; letter-spacing: -0.02em; line-height: 1.15; }
p { margin: 0; }
img, svg { display: block; }
:focus-visible { outline: none; box-shadow: var(--ring); border-radius: var(--radius-sm); }
.muted { color: var(--muted); }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.85em; }
.num { font-variant-numeric: tabular-nums; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border-radius: 12px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text); font: inherit; font-weight: 600; font-size: 15px;
  cursor: pointer; white-space: nowrap; transition: transform .12s ease, border-color .12s ease, background .12s ease;
}
.btn:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-1px); }
.btn.primary { background: var(--accent-grad); color: var(--accent-text); border-color: transparent; box-shadow: 0 8px 24px -10px rgba(45, 212, 191, 0.6); }
.btn.primary:hover { filter: brightness(1.06); }
.btn.lg { padding: 14px 22px; font-size: 16px; border-radius: 14px; }
.btn .icon { width: 18px; height: 18px; }
.icon { width: 20px; height: 20px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--text); letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { color: var(--text-2); font-weight: 500; font-size: 14.5px; padding: 8px 12px; border-radius: 10px; }
.nav a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.header .btn { padding: 9px 14px; font-size: 14px; }
@media (max-width: 760px) {
  .nav { display: none; }
  .header .btn { margin-left: auto; }
}

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section + .section { border-top: 1px solid var(--border); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent-soft-text); font-weight: 600; font-size: 13px; letter-spacing: 0.01em;
}
.section-head { max-width: 680px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin-top: 14px; }
.section-head p { margin-top: 14px; font-size: 17px; color: var(--text-2); }
.section-head.center { margin-inline: auto; text-align: center; }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 80px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(38px, 5.6vw, 62px); line-height: 1.05; }
.hero h1 .grad { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lede { margin-top: 22px; font-size: 19px; color: var(--text-2); max-width: 540px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero .fine { margin-top: 16px; font-size: 13.5px; color: var(--muted); }
.hero .eyebrow { margin-bottom: 20px; }
@media (max-width: 900px) {
  .hero { padding: 48px 0 64px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; }
}

/* Mock product cards in the hero */
.mock { position: relative; display: grid; gap: 14px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.mock .card { padding: 16px 18px; }
.mock .card.lift { box-shadow: var(--shadow-lg); border-color: var(--border-strong); }
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.card-head h3 { font-size: 14.5px; font-weight: 600; }
.card-head .sub { color: var(--muted); font-size: 12.5px; margin-left: auto; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; flex: none; }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.info { background: var(--accent-soft); color: var(--accent-soft-text); }
.pill .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.stat { background: var(--surface-2); border-radius: 12px; padding: 10px 12px; }
.stat .v { font-size: 20px; font-weight: 700; letter-spacing: -0.02em; }
.stat .k { font-size: 12px; color: var(--muted); margin-top: 2px; }
.rows { width: 100%; border-collapse: collapse; font-size: 13px; }
.rows td { padding: 7px 0; border-top: 1px solid var(--border); white-space: nowrap; }
.rows td:first-child { color: var(--text-2); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
.rows td:nth-child(2) { color: var(--muted); overflow: hidden; text-overflow: ellipsis; max-width: 160px; }
.rows td:last-child { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.rows .up { color: var(--ok); }
.rows .down { color: var(--warn); }
.mock .flow { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.mock .flow .chip { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 4px 9px; color: var(--text-2); font-weight: 500; }
.mock .flow .icon { width: 16px; height: 16px; }
@media (max-width: 480px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Sources strip ---------- */
.strip { padding: 28px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 50%, transparent); }
.strip .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; justify-content: center; }
.strip .label { color: var(--muted); font-size: 13.5px; font-weight: 500; margin-right: 6px; }
.chip { display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-size: 13.5px; font-weight: 500; color: var(--text-2); }
.chip .icon { width: 15px; height: 15px; color: var(--accent); }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: step; }
.step { position: relative; padding: 26px 24px 28px; }
.step .n {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  background: var(--accent-grad); color: var(--accent-text); font-weight: 700; font-size: 15px; margin-bottom: 18px;
}
.step h3 { font-size: 19px; margin-bottom: 10px; }
.step p { color: var(--text-2); font-size: 15px; }
.step ul { margin: 14px 0 0; padding: 0; list-style: none; display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
.step li { display: flex; gap: 8px; align-items: flex-start; }
.step li .icon { width: 16px; height: 16px; margin-top: 4px; color: var(--accent); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

/* ---------- Features ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.feature .tile {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 4px;
  background: var(--accent-soft); color: var(--accent-soft-text);
}
.feature h3 { font-size: 17px; }
.feature p { color: var(--text-2); font-size: 14.5px; }
.feature.wide { grid-column: span 2; }
@media (max-width: 960px) { .features { grid-template-columns: repeat(2, 1fr); } .feature.wide { grid-column: span 2; } }
@media (max-width: 600px) { .features { grid-template-columns: 1fr; } .feature.wide { grid-column: auto; } }

/* ---------- Split (text + illustration) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.flip > :first-child { order: 2; }
.split h2 { font-size: clamp(26px, 3.4vw, 34px); margin-top: 14px; }
.split .lede { margin-top: 14px; font-size: 16.5px; color: var(--text-2); }
.checks { margin: 22px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.checks li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--text-2); }
.checks li .icon { width: 20px; height: 20px; color: var(--accent); margin-top: 2px; }
.checks li b { color: var(--text); font-weight: 600; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 36px; } .split.flip > :first-child { order: 0; } }

/* Brake illustration */
.brake { padding: 18px 20px; }
.brake .line { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-top: 1px solid var(--border); font-size: 14px; }
.brake .line:first-child { border-top: 0; }
.brake .line .what { flex: 1; min-width: 0; }
.brake .line .what b { display: block; font-weight: 600; }
.brake .line .what span { color: var(--muted); font-size: 13px; }
.brake .icon-box { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; flex: none; }
.brake .icon-box.bad { background: var(--bad-soft); color: var(--bad); }
.brake .icon-box.warn { background: var(--warn-soft); color: var(--warn); }
.brake .icon-box.ok { background: var(--ok-soft); color: var(--ok); }
.brake .icon-box .icon { width: 18px; height: 18px; }

/* Rules illustration */
.rule-card { padding: 18px 20px; }
.rule-card .r { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; align-items: center; padding: 10px 0; border-top: 1px solid var(--border); font-size: 14px; }
.rule-card .r:first-of-type { border-top: 0; }
.rule-card .r .k { color: var(--text-2); }
.rule-card .r .v { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; background: var(--surface-2); padding: 3px 8px; border-radius: 7px; color: var(--accent-soft-text); }
.rule-card .example { margin-top: 12px; padding: 12px 14px; background: var(--surface-2); border-radius: 12px; font-size: 13.5px; color: var(--text-2); }
.rule-card .example b { color: var(--text); }

/* ---------- Pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: stretch; }
.plan { padding: 28px 26px; display: flex; flex-direction: column; gap: 14px; position: relative; }
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow-lg); }
.plan .badge { position: absolute; top: -12px; left: 24px; }
.plan h3 { font-size: 18px; }
.plan .price { font-size: 38px; font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.plan .price small { font-size: 14px; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.plan .for { color: var(--muted); font-size: 14px; }
.plan ul { margin: 6px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; font-size: 14.5px; color: var(--text-2); flex: 1; }
.plan li { display: flex; gap: 9px; align-items: flex-start; }
.plan li .icon { width: 17px; height: 17px; color: var(--accent); margin-top: 3px; }
.plan .btn { width: 100%; margin-top: 8px; }
.note { margin-top: 22px; text-align: center; color: var(--muted); font-size: 13.5px; }
@media (max-width: 860px) { .plans { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin-inline: auto; display: grid; gap: 10px; }
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 0 20px; }
.faq summary { cursor: pointer; list-style: none; display: flex; align-items: center; gap: 12px; padding: 16px 0; font-weight: 600; font-size: 15.5px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .icon { margin-left: auto; color: var(--muted); transition: transform .15s ease; }
.faq details[open] summary .icon { transform: rotate(45deg); }
.faq details p { padding: 0 0 18px; color: var(--text-2); font-size: 15px; }

/* ---------- Final CTA ---------- */
.cta-band { padding: 72px 0 88px; }
.cta-band .card { padding: 56px 32px; text-align: center; background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%); position: relative; overflow: hidden; }
.cta-band .card::before { content: ""; position: absolute; inset: -40% -20% auto; height: 70%; background: radial-gradient(closest-side, rgba(45, 212, 191, 0.18), transparent); pointer-events: none; }
.cta-band h2 { font-size: clamp(26px, 3.6vw, 38px); position: relative; }
.cta-band p { margin: 14px auto 0; max-width: 520px; color: var(--text-2); position: relative; }
.cta-band .cta { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 28px; position: relative; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 36px 0; color: var(--muted); font-size: 13.5px; }
.footer .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; }
.footer .brand { font-size: 15px; }
.footer .brand img { width: 24px; height: 24px; }
.footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-left: auto; }
.footer nav a { color: var(--muted); }
.footer nav a:hover { color: var(--text); }
.footer .copy { width: 100%; }

/* ---------- Plain pages (privacy, support) ---------- */
.doc { max-width: 720px; margin-inline: auto; padding: 56px 0 88px; }
.doc h1 { font-size: clamp(30px, 4vw, 40px); }
.doc .updated { margin-top: 10px; color: var(--muted); font-size: 14px; }
.doc h2 { font-size: 21px; margin-top: 40px; }
.doc p, .doc li { color: var(--text-2); margin-top: 12px; font-size: 15.5px; }
.doc ul { padding-left: 22px; margin: 0; }
.doc .callout { margin-top: 24px; padding: 14px 16px; border-radius: 12px; background: var(--warn-soft); color: var(--warn); font-size: 14px; border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }