/* rass.im — "Dossier" design system
   Dark field-report aesthetic: warm near-black, bone text, signal-amber accent,
   Space Grotesk display + IBM Plex Mono metadata. */

:root {
  color-scheme: dark;
  --bg: #100f0b;
  --panel: #14130e;
  --panel-hover: #181712;
  --ink: #e7e2d3;
  --ink-soft: #c9c3b3;
  --muted: #9a9484;
  --dim: #8a8472;
  --faint: #6f6a58;
  --line: #26241c;
  --line-bright: #2e2b1f;
  --line-faint: #1e1c15;
  --amber: #f2a63c;
  --amber-ink: #181205;
  --sans: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Bilingual visibility — driven by site.js toggling body[data-lang] */
body[data-lang="en"] [data-lang-panel="ru"],
body[data-lang="ru"] [data-lang-panel="en"] { display: none !important; }

img { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }
a { color: var(--amber); text-decoration: none; }

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 50;
  padding: 10px 14px;
  background: var(--amber);
  color: var(--amber-ink);
  font-family: var(--mono);
  font-size: 13px;
}
.skip-link:focus { top: 12px; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

/* Classification strip */
.strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 9px 32px;
  background: var(--amber);
  color: var(--amber-ink);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 32px;
  background: rgba(16, 15, 11, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-right: auto;
  color: var(--ink);
}
.brand .name { font-weight: 700; letter-spacing: -0.01em; font-size: 15px; }
.brand small { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: 0.08em; }

.site-nav {
  display: flex;
  gap: 24px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.site-nav a { color: var(--muted); transition: color 0.15s ease; }
.site-nav a:hover { color: var(--amber); }

.lang-switch {
  display: flex;
  border: 1px solid var(--line-bright);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.lang-switch button {
  border: 0;
  padding: 6px 11px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
}
.lang-switch button[aria-pressed="true"] { background: var(--amber); color: var(--amber-ink); }

/* Sections */
.section { padding: 36px 0; }
.section:first-of-type { padding-top: 60px; }

.sec-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
}
.sec-head .no {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--amber);
  letter-spacing: 0.1em;
}
.sec-head .label {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.sec-head .rule { flex: 1; height: 1px; background: var(--line); }

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 24px;
}

/* Hero */
.hero { padding: 60px 0 40px; }

.meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 44px;
}
.meta-grid .cell { background: var(--bg); padding: 16px 18px; }
.meta-grid .k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--dim);
  text-transform: uppercase;
}
.meta-grid .v { font-size: 14px; margin-top: 6px; font-weight: 500; }
.meta-grid .v.status { color: var(--amber); }

h1 {
  font-size: clamp(2.6rem, 5.4vw, 3.9rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 700;
  max-width: 900px;
}

.mark {
  background: var(--amber);
  color: var(--amber-ink);
  padding: 0 10px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.lead {
  font-size: clamp(1rem, 1.6vw, 1.05rem);
  color: #a09a88;
  max-width: 680px;
  line-height: 1.55;
  margin-top: 24px;
}

.chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 12px;
}
.chips a, .chips span {
  padding: 9px 15px;
  border: 1px solid var(--line-bright);
  color: var(--ink-soft);
  transition: border-color 0.15s ease, color 0.15s ease;
}
.chips a:hover { border-color: var(--amber); color: var(--amber); }
.chips .now { color: var(--amber); }

/* Buttons */
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 25px;
  font-size: 14px;
  font-weight: 600;
  transition: filter 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn-primary { background: var(--amber); color: var(--amber-ink); padding: 14px 26px; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border: 1px solid var(--line-bright); color: var(--ink); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

/* Two-column text (profile) */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.grid-2 h3 { font-size: 19px; font-weight: 600; margin-bottom: 14px; }
.grid-2 p { font-size: 14.5px; line-height: 1.6; color: var(--muted); }

/* Case files / products */
.grid-cases { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.case {
  border: 1px solid var(--line);
  background: var(--panel);
  display: block;
  color: inherit;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.case:hover { border-color: #3a362a; background: var(--panel-hover); }
.case img { width: 100%; border-bottom: 1px solid var(--line); }
.case .body { padding: 22px 24px; }
.case .tag { font-family: var(--mono); font-size: 10px; color: var(--amber); letter-spacing: 0.12em; margin-bottom: 8px; }
.case .title { font-size: 21px; font-weight: 600; }
.case p { font-size: 13.5px; color: var(--muted); line-height: 1.55; margin-top: 10px; }
.case .go { font-family: var(--mono); font-size: 12px; color: var(--amber); margin-top: 16px; }

/* Service record / experience */
.record { font-family: var(--mono); font-size: 13.5px; }
.record .row {
  display: grid;
  grid-template-columns: 186px 1fr;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-faint);
}
.record .row:last-child { border-bottom: 0; }
.record .date { color: var(--faint); }
.record .role { color: var(--ink); font-weight: 500; font-family: var(--sans); font-size: 16px; }
.record .org { color: var(--dim); }
.record .desc { color: #7a7562; display: block; margin-top: 3px; font-family: var(--sans); font-size: 13.5px; }

/* Capabilities */
.caps { display: flex; flex-direction: column; gap: 14px; }
.caps .line { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.caps .cat {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.12em;
  width: 118px;
}
.tag-chip {
  padding: 7px 13px;
  border: 1px solid var(--line-bright);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 12.5px;
}
.tag-chip.cert { border-color: var(--amber); color: var(--amber); }

/* Cards grid (coverage, workflow, reports) */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 22px;
}
.card .tag { font-family: var(--mono); font-size: 11px; color: var(--amber); letter-spacing: 0.1em; margin-bottom: 12px; }
.card .num { font-family: var(--mono); font-size: 22px; color: var(--amber); font-weight: 600; margin-bottom: 14px; }
.card h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.card p { font-size: 13px; color: var(--muted); line-height: 1.55; }

/* Checklist (privacy / analysis) */
.checklist {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  max-width: 840px;
}
.checklist .item {
  background: var(--panel);
  padding: 16px 20px;
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 14px;
}
.checklist .mk { color: var(--amber); font-family: var(--mono); font-size: 13px; }
.checklist span:not(.mk) { font-size: 14.5px; color: var(--ink-soft); }
.checklist [data-lang-panel] { grid-column: 2; }

.sub-h2 { font-size: clamp(1.7rem, 3vw, 2rem); line-height: 1.12; letter-spacing: -0.02em; font-weight: 700; max-width: 720px; margin-bottom: 26px; }
.sub-lead { font-size: 15px; color: var(--muted); max-width: 640px; margin-bottom: 24px; }

/* Callout note */
.note {
  margin-top: 20px;
  border: 1px solid var(--line-bright);
  border-left: 3px solid var(--amber);
  background: var(--panel);
  padding: 18px 22px;
  max-width: 860px;
}
.note p { font-size: 14px; color: var(--ink-soft); line-height: 1.55; }

/* Screenshot frame (product hero) */
.frame { margin: 44px 0 0; border: 1px solid var(--line); background: var(--panel); }
.frame-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  letter-spacing: 0.1em;
}
.frame-bar .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line-bright); }
.frame-bar .ex { margin-left: 8px; }
.frame figcaption {
  padding: 13px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--dim);
}

/* Contact */
.contact { border-top: 1px solid var(--line); margin-top: 40px; padding: 56px 0; }
.contact .kicker { color: var(--amber); }
.contact h2 { font-size: clamp(2.4rem, 4.4vw, 2.9rem); line-height: 1.03; letter-spacing: -0.02em; font-weight: 700; max-width: 640px; }
.contact p { font-size: 16px; color: var(--muted); margin: 18px 0 30px; max-width: 520px; line-height: 1.55; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); margin-top: 56px; }
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
  padding-top: 26px;
  padding-bottom: 40px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
}
.site-footer a { color: var(--dim); letter-spacing: 0.08em; transition: color 0.15s ease; }
.site-footer a:hover { color: var(--ink); }
.site-footer .home { margin-right: auto; }

/* Responsive */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .site-header { flex-wrap: wrap; }
  .site-nav { order: 3; width: 100%; gap: 16px 18px; flex-wrap: wrap; }
  .meta-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2, .grid-cases { grid-template-columns: 1fr; }
  .record .row { grid-template-columns: 1fr; gap: 4px; }
  .strip { font-size: 10px; letter-spacing: 0.1em; }
}
@media (max-width: 520px) {
  .grid-4 { grid-template-columns: 1fr; }
  .wrap, .strip, .site-header { padding-left: 20px; padding-right: 20px; }
}