/* ==========================================================================
   AntiDeepfake — Marketing site styles
   Enterprise media-forensics theme. Sober ink/navy surfaces, one restrained
   accent, thin borders, real spacing rhythm. No gradients-as-identity.
   ========================================================================== */

:root {
  /* Surfaces */
  --ink: #080b11;          /* page background */
  --ink-2: #10141c;        /* alt sections */
  --surface: #151a23;      /* cards */
  --surface-2: #1c2430;    /* raised */
  --line: #27303d;         /* hairline borders */
  --line-strong: #3b4656;

  /* Text */
  --text: #e9eef7;
  --text-soft: #b4bed3;
  --text-dim: #7d89a3;

  /* Brand — restrained corporate blue + supporting teal */
  --brand: #d7ad62;
  --brand-strong: #b98d43;
  --brand-soft: rgba(215, 173, 98, 0.13);
  --accent: #57d6c2;       /* teal, used sparingly for "verified" */

  /* Status */
  --ok: #2bb673;
  --ok-soft: rgba(43, 182, 115, 0.14);
  --warn: #e0a43b;
  --warn-soft: rgba(224, 164, 59, 0.14);
  --bad: #e25563;
  --bad-soft: rgba(226, 85, 99, 0.14);

  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1200px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background:
    linear-gradient(180deg, rgba(215, 173, 98, 0.045), transparent 320px),
    var(--ink);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.section { padding: 84px 0; border-top: 1px solid transparent; }
.section-alt { background: var(--ink-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

h1, h2, h3, h4 { line-height: 1.18; font-weight: 700; letter-spacing: -0.018em; color: #fff; }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.kicker { display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--brand); margin-bottom: 14px; }
h2.section-title { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin-bottom: 14px; }
.section-sub { color: var(--text-soft); font-size: 1.05rem; }
.text-accent { color: var(--brand); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 12px 22px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.96rem;
  border: 1px solid transparent; cursor: pointer; transition: background .15s, border-color .15s, transform .05s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary { color: #120f08; }
.btn-primary:hover { background: var(--brand-strong); color: #fff; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--brand); color: #fff; }
.btn-lg { padding: 15px 30px; font-size: 1.04rem; }
.btn svg { width: 18px; height: 18px; }

/* ---------- Announcement bar ---------- */
.topbar-strip {
  background: var(--ink-2); border-bottom: 1px solid var(--line);
  font-size: 0.86rem; color: var(--text-soft); text-align: center; padding: 9px 16px;
}
.topbar-strip strong { color: #fff; font-weight: 600; }

/* ---------- Navbar ---------- */
.navbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 15, 28, 0.86); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 1.12rem; color: #fff; letter-spacing: -0.02em; }
.brand .mark { width: 30px; height: 30px; flex: none; }
.brand small { display: block; font-size: 0.62rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-dim); margin-top: -2px; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--text-soft); font-weight: 500; font-size: 0.93rem; transition: color .15s; }
.nav-links a:hover { color: #fff; }
.nav-links .btn { padding: 9px 18px; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line-strong); border-radius: 8px; color: var(--text); width: 40px; height: 38px; font-size: 1.2rem; cursor: pointer; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 92px 0 84px; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.6;
  background:
    radial-gradient(620px 300px at 12% -5%, rgba(215, 173, 98, 0.16), transparent 70%),
    radial-gradient(560px 280px at 92% 0%, rgba(25, 184, 166, 0.10), transparent 72%);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; position: relative; }
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.3rem); margin-bottom: 20px; letter-spacing: -0.03em; }
.hero p.lead { font-size: clamp(1.02rem, 1.8vw, 1.2rem); color: var(--text-soft); max-width: 560px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; font-size: 0.78rem;
  font-weight: 600; letter-spacing: 0.04em; border: 1px solid var(--line-strong); color: var(--text-soft);
  margin-bottom: 22px; background: var(--surface);
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.hero-trust { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 34px; color: var(--text-dim); font-size: 0.86rem; }
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust svg { width: 16px; height: 16px; color: var(--ok); }

/* Hero product mock */
.hero-visual { position: relative; }
.mock {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
}
.mock-head { display: flex; align-items: center; gap: 8px; padding: 12px 14px; border-bottom: 1px solid var(--line); background: var(--ink-2); }
.mock-head .dots { display: flex; gap: 6px; }
.mock-head .dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); display: block; }
.mock-head .mock-title { font-size: 0.8rem; color: var(--text-dim); margin-left: 6px; }
.mock-body { padding: 20px; display: grid; grid-template-columns: 150px 1fr; gap: 20px; align-items: center; }
.gauge-mini { position: relative; display: grid; place-items: center; }
.gauge-mini .val { position: absolute; text-align: center; }
.gauge-mini .val b { font-size: 1.9rem; font-weight: 700; color: #fff; display: block; line-height: 1; }
.gauge-mini .val small { font-size: 0.66rem; color: var(--text-dim); }
.verdict-pill { display: inline-flex; align-items: center; gap: 7px; padding: 5px 12px; border-radius: 999px; font-size: 0.78rem; font-weight: 600; margin-bottom: 14px; }
.verdict-pill.ok { background: var(--ok-soft); color: var(--ok); }
.mock-rows { display: flex; flex-direction: column; gap: 10px; }
.mock-row { display: grid; grid-template-columns: 120px 1fr 34px; gap: 10px; align-items: center; font-size: 0.78rem; color: var(--text-soft); }
.mock-row .track { height: 6px; border-radius: 999px; background: var(--line); overflow: hidden; }
.mock-row .track i { display: block; height: 100%; border-radius: 999px; background: var(--brand); }
.mock-row b { color: var(--text); text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- Logos / trust strip ---------- */
.logos { padding: 30px 0; border-bottom: 1px solid var(--line); }
.logos p { text-align: center; color: var(--text-dim); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 18px; }
.logos-row { display: flex; flex-wrap: wrap; gap: 40px; justify-content: center; align-items: center; opacity: 0.78; }
.logos-row span { font-weight: 700; font-size: 1.05rem; color: var(--text-soft); letter-spacing: -0.01em; }

/* ---------- Trial scanner ---------- */
.trial-section { background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent); }
.trial-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 34px; align-items: stretch; }
.trial-points { list-style: none; margin-top: 24px; display: grid; gap: 12px; }
.trial-points li { color: var(--text-soft); padding-left: 28px; position: relative; }
.trial-points li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 14px; height: 8px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.trial-points code { color: #fff; background: var(--surface); border: 1px solid var(--line); padding: 2px 6px; border-radius: 6px; }
.trial-card { background: var(--surface); border: 1px solid var(--line-strong); border-radius: 18px; padding: 28px; box-shadow: var(--shadow); }
.trial-card #trialForm { display: grid; gap: 14px; }
.trial-card label { color: #fff; font-weight: 700; }
.trial-card input[type="file"] { width: 100%; background: var(--ink-2); border: 1px dashed var(--line-strong); border-radius: var(--radius); padding: 18px; color: var(--text-soft); }
.trial-note { color: var(--text-dim); font-size: 0.84rem; }
.trial-status { min-height: 24px; margin-top: 16px; color: var(--text-soft); }
.trial-result { margin-top: 18px; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: var(--ink-2); }
.trial-result.hidden { display: none; }
.trial-result .verdict-line { display: flex; justify-content: space-between; gap: 16px; align-items: center; margin-bottom: 12px; }
.trial-result .verdict-line strong { font-size: 1.2rem; color: #fff; }
.trial-result .score { font-size: 2rem; font-weight: 800; color: var(--brand); font-variant-numeric: tabular-nums; }
.trial-result .small { color: var(--text-dim); font-size: 0.84rem; }

/* ---------- Stats ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.stat-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.stat-card .num { font-size: 2.3rem; font-weight: 700; color: #fff; letter-spacing: -0.02em; }
.stat-card .label { color: var(--text-soft); margin-top: 8px; font-size: 0.94rem; }
.stat-card .src { color: var(--text-dim); font-size: 0.74rem; margin-top: 10px; }

/* ---------- Feature / methods grid ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 18px; }
.feature-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: border-color .15s, transform .15s; }
.feature-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.feature-card .ico { width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); margin-bottom: 16px; }
.feature-card .ico svg { width: 22px; height: 22px; }
.feature-card h3 { font-size: 1.08rem; margin-bottom: 8px; }
.feature-card p { color: var(--text-soft); font-size: 0.93rem; }
.feature-card .tag { display: inline-block; font-size: 0.7rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 12px; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; position: relative; }
.step .n { width: 34px; height: 34px; border-radius: 9px; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; font-weight: 700; margin-bottom: 16px; }
.step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step p { color: var(--text-soft); font-size: 0.93rem; }

/* ---------- Comparison ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table.compare { width: 100%; border-collapse: collapse; min-width: 640px; }
table.compare th, table.compare td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 0.94rem; }
table.compare thead th { background: var(--ink-2); color: var(--text); font-weight: 600; }
table.compare th.highlight-col, table.compare td.highlight-col { background: var(--brand-soft); color: #fff; font-weight: 600; }
table.compare td { color: var(--text-soft); }
table.compare .tick { color: var(--ok); font-weight: 600; }
table.compare .cross { color: var(--text-dim); }
table.compare tr:last-child td { border-bottom: none; }

/* ---------- Use cases ---------- */
.usecase-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.usecase { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; gap: 16px; }
.usecase .ico { width: 40px; height: 40px; flex: none; border-radius: 10px; background: var(--surface-2); color: var(--brand); display: grid; place-items: center; }
.usecase .ico svg { width: 21px; height: 21px; }
.usecase h3 { font-size: 1.02rem; margin-bottom: 6px; }
.usecase p { color: var(--text-soft); font-size: 0.9rem; }

/* ---------- Security / compliance ---------- */
.assurance { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.assurance-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.assurance-item .ico { color: var(--accent); margin-bottom: 14px; }
.assurance-item .ico svg { width: 24px; height: 24px; }
.assurance-item h3 { font-size: 1rem; margin-bottom: 8px; }
.assurance-item p { color: var(--text-soft); font-size: 0.9rem; }

/* ---------- Pricing ---------- */
.pricing { display: grid; grid-template-columns: repeat(2, minmax(280px, 1fr)); gap: 20px; max-width: 860px; margin: 0 auto; align-items: stretch; }
.price-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; position: relative; display: flex; flex-direction: column; }
.price-card.featured { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand) inset; }
.price-card .badge-top { position: absolute; top: -11px; left: 32px; background: var(--brand); color: #fff; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 4px 12px; border-radius: 999px; }
.price-card h3 { font-size: 1.2rem; margin-bottom: 6px; }
.price-card .price { font-size: 2.6rem; font-weight: 700; color: #fff; letter-spacing: -0.02em; }
.price-card .price small { font-size: 0.95rem; color: var(--text-dim); font-weight: 500; }
.price-card .once { color: var(--text-soft); margin-bottom: 20px; font-size: 0.9rem; }
.price-features { list-style: none; margin-bottom: 24px; flex: 1; }
.price-features li { padding: 8px 0 8px 28px; position: relative; color: var(--text-soft); font-size: 0.93rem; border-bottom: 1px solid var(--line); }
.price-features li::before { content: ""; position: absolute; left: 2px; top: 14px; width: 14px; height: 8px; border-left: 2px solid var(--ok); border-bottom: 2px solid var(--ok); transform: rotate(-45deg); }
.guarantee { color: var(--text-dim); font-size: 0.82rem; margin-top: 14px; text-align: center; }
.trust-badges { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 16px; }
.trust-badge { font-size: 0.74rem; color: var(--text-soft); border: 1px solid var(--line-strong); border-radius: 6px; padding: 6px 10px; }

/* ---------- FAQ ---------- */
.faq { max-width: 800px; margin: 0 auto; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:last-child { border-bottom: none; }
.faq-q { width: 100%; text-align: left; background: var(--surface); color: var(--text); border: none; cursor: pointer; padding: 20px 22px; font-size: 1rem; font-weight: 600; display: flex; justify-content: space-between; gap: 16px; align-items: center; font-family: inherit; }
.faq-q:hover { background: var(--surface-2); }
.faq-q .chev { color: var(--text-dim); font-size: 1.3rem; line-height: 1; transition: transform .2s; }
.faq-item.open .faq-q .chev { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .25s ease; background: var(--ink-2); }
.faq-item.open .faq-a { max-height: 320px; }
.faq-a p { padding: 18px 22px; color: var(--text-soft); font-size: 0.94rem; }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; }
.cta-band .section-title { margin-bottom: 12px; }

/* ---------- Footer ---------- */
.footer { background: var(--ink-2); border-top: 1px solid var(--line); padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
.footer h4 { font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 14px; font-weight: 600; }
.footer a { display: block; color: var(--text-soft); padding: 6px 0; font-size: 0.92rem; }
.footer a:hover { color: #fff; }
.footer .blurb { color: var(--text-soft); max-width: 320px; font-size: 0.92rem; margin-top: 14px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; border-top: 1px solid var(--line); padding-top: 22px; color: var(--text-dim); font-size: 0.85rem; }
.footer-bottom .footer-badges { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Legal pages ---------- */
.legal { max-width: 820px; margin: 0 auto; padding: 64px 24px; }
.legal h1 { font-size: 2rem; margin-bottom: 10px; }
.legal .updated { color: var(--text-dim); margin-bottom: 32px; font-size: 0.9rem; }
.legal h2 { font-size: 1.2rem; margin: 30px 0 10px; }
.legal p, .legal li { color: var(--text-soft); margin-bottom: 12px; }
.legal ul { padding-left: 22px; }
.legal .notice { background: var(--warn-soft); border: 1px solid var(--warn); border-radius: var(--radius-sm); padding: 14px 16px; color: var(--text); font-size: 0.9rem; margin-bottom: 24px; }
.legal a { color: var(--brand); }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .trial-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .pricing { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--ink-2); border-bottom: 1px solid var(--line); padding: 8px 0; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 24px; width: 100%; }
  .nav-links .btn { margin: 8px 24px; }
  .nav-toggle { display: block; }
  .section { padding: 60px 0; }
  .footer-grid { grid-template-columns: 1fr; }
}