/* ==========================================================================
   DXV Frame Doctor — marketing site
   Design tokens derived from the GTO brand book's WEB-среда section:
   dark theme, black base, cool "Electric" accent for UI, warm "Scarlet"
   accent reserved for the highest-priority calls to action.
   ========================================================================== */

:root {
  /* base */
  --bg: #101013;
  --bg-panel: #18181d;
  --bg-panel-2: #1c1c22;
  --border: #26262d;
  --border-soft: #33333c;

  /* text */
  --text: #eceaea;
  --text-muted: #97969f;    /* Ash, desaturated */
  --text-faint: #67666f;

  /* accents — cool (rational, default for site), muted/desaturated indigo */
  --electric: #363a67;
  --electric-2: #474c8a;
  --electric-3: #9095c9;    /* soft periwinkle, for text accents */

  /* accents — warm (used sparingly for CTAs), muted terracotta instead of neon orange */
  --scarlet: #b8532f;
  --aperol: #a3462a;
  --joy: #c98a52;

  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1160px;

  --font-head: "Unbounded", "Benzin", sans-serif;
  --font-body: "Montserrat", "Calibri", sans-serif;
}

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

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% -10%, rgba(71, 76, 138, .10), transparent 55%),
    radial-gradient(circle at 90% 10%, rgba(184, 83, 47, .05), transparent 45%),
    linear-gradient(180deg, #121216 0%, #0f0f12 45%, #131317 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.15rem; }

p { color: var(--text-muted); margin: 0 0 1em; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--electric-3);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--scarlet);
  display: inline-block;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: .92rem;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, opacity .15s ease;
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--aperol);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .06);
  box-shadow: 0 4px 14px -8px rgba(0, 0, 0, .5);
}
.btn-primary:hover { background: var(--scarlet); }

.btn-secondary {
  background: var(--electric-2);
  color: #fff;
}
.btn-secondary:hover { background: var(--electric-3); }

.btn-ghost {
  background: transparent;
  border-color: var(--border-soft);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--electric-3); color: var(--electric-3); }

.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(17, 17, 21, .82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 92px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: .01em;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--electric), var(--electric-3));
  position: relative;
  flex: none;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 4px;
  background: var(--scarlet);
}
/* Mobile dropdown menu content -- hidden by default, shown inline via JS
   toggle only below the .side-dock breakpoint (see nav-toggle below). */
.nav-links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-size: .92rem;
  color: var(--text-muted);
  transition: color .15s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  color: var(--text);
  width: 42px;
  height: 42px;
  font-size: 1.2rem;
  cursor: pointer;
}

/* ---------- floating section dock ---------- */
.side-dock {
  position: fixed;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 150;
}
.dock-item {
  width: 148px;
  text-align: center;
  padding: 11px 14px;
  border-radius: 999px;
  background: rgba(24, 24, 29, .78);
  border: 1px solid var(--border-soft);
  backdrop-filter: blur(8px);
  font-family: var(--font-head);
  font-size: .72rem;
  color: var(--text-muted);
  transition: padding .25s ease, font-size .25s ease, background .25s ease, color .25s ease, border-color .25s ease;
}
.dock-item:hover { color: var(--text); border-color: var(--electric-3); }
.dock-item.active {
  color: #fff;
  background: var(--electric-2);
  border-color: var(--electric-2);
  padding: 15px 14px;
  font-size: .78rem;
  font-weight: 600;
  box-shadow: 0 8px 22px -10px rgba(0, 0, 0, .6);
}
@media (max-width: 900px) {
  .side-dock { display: none; }
  .nav-toggle { display: block; }
}

/* ---------- hero ---------- */
.hero {
  padding: 96px 0 72px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -260px;
  right: -160px;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(71, 76, 138, .20), transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -280px;
  left: -200px;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(184, 83, 47, .09), transparent 70%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.hero-actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.hero-meta {
  display: flex;
  gap: 28px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.hero-meta div { min-width: 120px; }
.hero-meta strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--text);
}
.hero-meta span { font-size: .82rem; color: var(--text-faint); }

.hero-visual {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--border-soft);
  background: linear-gradient(160deg, var(--bg-panel-2), #131318);
  padding: 18px;
  box-shadow: 0 30px 70px -30px rgba(0,0,0,.7);
}
.hero-visual .window-bar {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}
.hero-visual .window-bar span {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border-soft);
}
.hero-visual .window-bar span:nth-child(1) { background: var(--scarlet); }
.hero-visual .window-bar span:nth-child(2) { background: var(--joy); }
.hero-visual .window-bar span:nth-child(3) { background: var(--electric-3); }

.mock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  margin-bottom: 8px;
  font-size: .82rem;
}
.mock-row .name { color: var(--text); font-weight: 500; }
.mock-row .path { color: var(--text-faint); font-size: .74rem; }
.status-pill {
  font-family: var(--font-head);
  font-size: .68rem;
  letter-spacing: .04em;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.status-ok { background: rgba(74, 76, 255, .16); color: var(--electric-3); }
.status-bad { background: rgba(255, 39, 0, .16); color: #ff6b52; }
.status-fixed { background: rgba(255, 102, 0, .16); color: var(--joy); }

/* ---------- sections ---------- */
section { padding: 88px 0; border-top: 1px solid var(--border); scroll-margin-top: 100px; }
#top { scroll-margin-top: 0; }
.section-head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head p { margin: 0; }

/* ---------- feature grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--border-soft); transform: translateY(-3px); }
.card-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--electric), var(--electric-2));
  margin-bottom: 16px;
  font-size: 1.2rem;
}
.card h3 { margin-bottom: 8px; }
.card p { margin: 0; font-size: .9rem; }

/* ---------- codecs ---------- */
.codec-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.codec-chip {
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  padding: 10px 20px;
  font-family: var(--font-head);
  font-size: .82rem;
  color: var(--text);
  background: var(--bg-panel);
}
.codec-chip b { color: var(--electric-3); }

/* ---------- audience ---------- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.audience-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.audience-card .tag { margin-bottom: 14px; display: inline-block; }
.audience-card h3 { margin-bottom: 10px; }
.audience-card p { font-size: .92rem; margin: 0; }

.audience-visual {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  padding: 16px;
  margin-bottom: 20px;
}
.audience-visual .visual-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .68rem;
  color: var(--text-faint);
  margin-bottom: 10px;
  font-family: var(--font-head);
  letter-spacing: .03em;
}
/* Shared "before / after" storytelling mock used by both audience cards:
   a labelled row of clip/frame cells, one flagged as broken, a one-line
   connector explaining what DXV Frame Doctor does, then the same row again
   with that cell healed. Keeps a light Resolume/render-queue accent (layer
   chip, BPM, filmstrip) without trying to clone either app's full chrome --
   the before/after is what actually explains the value, not UI fidelity. */
.resolume-mock {
  background: #0c0c0f;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
}
.rl-top {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: .64rem;
  letter-spacing: .03em;
  color: var(--text-faint);
  margin-bottom: 10px;
}
.rl-top .rl-file { flex: 1; }
.rl-top .rl-bpm { color: var(--electric-3); }
.rl-layer-chip {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--text-muted);
}

.rl-row-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  font-family: var(--font-head);
  font-size: .62rem;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.rl-row-head .status-pill { padding: 2px 8px; font-size: .6rem; }

.rl-strip { display: flex; gap: 5px; }
.rl-cell {
  flex: 1;
  aspect-ratio: 16 / 10;
  border-radius: 4px;
  border-top: 2px solid rgba(255, 255, 255, .12);
  position: relative;
}
.rl-cell.c1 { background: linear-gradient(135deg, var(--electric-2), var(--electric)); }
.rl-cell.c2 { background: linear-gradient(135deg, var(--joy), var(--aperol)); }
.rl-cell.c3 { background: linear-gradient(135deg, var(--border-soft), var(--bg-panel-2)); }
.rl-cell.corrupt {
  background: repeating-linear-gradient(
    115deg,
    var(--bg-panel-2) 0 3px,
    var(--scarlet) 3px 5px,
    var(--bg-panel-2) 5px 9px,
    var(--electric-3) 9px 11px,
    var(--bg-panel-2) 11px 16px
  );
  border: 1px solid var(--scarlet);
}
.rl-cell.healed { border: 1px solid var(--electric-3); }

.rl-flag {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .6rem;
  font-family: var(--font-head);
  line-height: 1;
}
.corrupt .rl-flag, .frame.bad .rl-flag { background: var(--scarlet); color: #fff; }
.healed .rl-flag, .frame.fixed .rl-flag { background: var(--electric-3); color: #0c0c0f; }

.rl-connector {
  text-align: center;
  margin: 9px 0;
}
.rl-connector .rl-arrow {
  font-size: .8rem;
  color: var(--text-faint);
  line-height: 1;
  margin-bottom: 2px;
}
.rl-connector .rl-label {
  display: inline-block;
  font-family: var(--font-head);
  font-size: .64rem;
  color: var(--electric-3);
  letter-spacing: .01em;
}

.rl-bottom {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  font-family: var(--font-head);
  font-size: .6rem;
  letter-spacing: .03em;
  color: var(--text-faint);
}
.rl-fader {
  flex: 1;
  height: 5px;
  border-radius: 999px;
  background: var(--border-soft);
  position: relative;
  overflow: hidden;
}
.rl-fader::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 62%;
  background: var(--electric-3);
  border-radius: 999px;
}

/* After-Effects-style render filmstrip mock -- same before/after pattern,
   numbered frames, and the two neighbours used for interpolation marked. */
.render-strip {
  display: flex;
  gap: 4px;
}
.render-strip .frame {
  flex: 1;
  height: 34px;
  border-radius: 4px;
  background: linear-gradient(165deg, var(--bg-panel-2), var(--bg));
  border: 1px solid var(--border);
  position: relative;
}
.render-strip .frame .fr-num {
  position: absolute;
  left: 3px;
  bottom: 2px;
  font-size: .52rem;
  font-family: var(--font-head);
  color: var(--text-faint);
}
.render-strip .frame.donor { border-color: var(--electric-3); border-style: dashed; }
.render-strip .frame.bad { background: rgba(184, 83, 47, .22); border-color: var(--scarlet); border-style: solid; }
.render-strip .frame.fixed { background: rgba(144, 149, 201, .18); border-color: var(--electric-3); border-style: solid; }
.visual-caption {
  font-size: .72rem;
  color: var(--text-faint);
  margin-top: 10px;
}

/* ---------- modes ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.split .card { padding: 30px; }
.tag-row { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.tag {
  font-size: .7rem;
  font-family: var(--font-head);
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  color: var(--text-muted);
}

/* ---------- changelog ---------- */
.changelog-list { max-width: 760px; margin: 0 auto; }
.changelog-entry {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.changelog-entry:first-child { border-top: none; }
.changelog-version {
  font-family: var(--font-head);
  font-size: 1.6rem;
  color: var(--electric-3);
}
.changelog-version span {
  display: block;
  font-family: var(--font-body);
  font-size: .74rem;
  color: var(--text-faint);
  margin-top: 4px;
}
.changelog-entry h3 { margin-bottom: 12px; }
.changelog-entry ul { margin: 0; padding-left: 18px; color: var(--text-muted); font-size: .92rem; }
.changelog-entry li { margin-bottom: 7px; }
.changelog-entry li::marker { color: var(--scarlet); }

/* ---------- pricing / license ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  align-items: stretch;
}
.price-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
}
.price-card.featured {
  border-color: var(--scarlet);
  background: linear-gradient(160deg, rgba(184, 83, 47, .10), var(--bg-panel) 60%);
  position: relative;
}
.price-card .badge {
  position: absolute;
  top: -13px; right: 24px;
  background: var(--scarlet);
  color: #fff;
  font-family: var(--font-head);
  font-size: .68rem;
  padding: 5px 12px;
  border-radius: 999px;
}
.price-amount {
  font-family: var(--font-head);
  font-size: 2.1rem;
  margin: 8px 0 4px;
}
.price-amount span { font-size: .95rem; color: var(--text-faint); font-family: var(--font-body); }
.price-card ul { list-style: none; padding: 0; margin: 20px 0 26px; flex: 1; }
.price-card li {
  display: flex;
  gap: 10px;
  font-size: .89rem;
  color: var(--text-muted);
  padding: 7px 0;
}
.price-card li::before { content: "✓"; color: var(--electric-3); font-weight: 700; }
.price-card.featured li::before { color: var(--scarlet); }

.period-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 2px; }
.period-chip {
  font-family: var(--font-head);
  font-size: .74rem;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  color: var(--text-muted);
}

/* ---------- forms ---------- */
.form-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field.hidden { display: none; }
.field label {
  display: block;
  font-size: .8rem;
  color: var(--text-muted);
  margin-bottom: 7px;
  font-family: var(--font-head);
  letter-spacing: .01em;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 11px 13px;
  font-family: var(--font-body);
  font-size: .92rem;
  outline: none;
  transition: border-color .15s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--electric-3); }
.field textarea { resize: vertical; min-height: 100px; }
.field small { display: block; margin-top: 6px; color: var(--text-faint); font-size: .76rem; }
.form-status {
  margin-top: 14px;
  font-size: .86rem;
  min-height: 1.2em;
}
.form-status.ok { color: #4ade80; }
.form-status.err { color: #ff6b52; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }

/* ---------- fingerprint helper ---------- */
.fp-help {
  background: var(--bg);
  border: 1px dashed var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: .82rem;
  color: var(--text-faint);
  margin-bottom: 20px;
}
.fp-help code { color: var(--electric-3); }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.footer-links { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: .88rem; }
.footer-links a:hover { color: var(--text); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: .78rem;
  color: var(--text-faint);
}

/* ---------- modal ---------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(8, 8, 10, .72);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-panel-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 30px;
  max-width: 480px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 1.3rem;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--text); }

/* ---------- misc ---------- */
.center { text-align: center; }
.mt-24 { margin-top: 24px; }
.note {
  font-size: .82rem;
  color: var(--text-faint);
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .audience-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .changelog-entry { grid-template-columns: 1fr; gap: 10px; }
}
@media (max-width: 640px) {
  .nav-cta .btn-ghost { display: none; }
  .grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .hero { padding: 56px 0 48px; }
}
@media (max-width: 480px) {
  .brand-name { display: none; }
  .nav-cta .btn-primary { display: none; }
}