/*
 * FireSecurity marketing site.
 *
 * The tokens are copied from the panel (ui/src/styles/tokens.css) on purpose: a customer who
 * clicks through from the site to app.firesec.uz should see the same product, not two brands.
 * Light is the default, dark follows the system unless the visitor chose a theme.
 *
 * No external CDN anywhere — fonts are system stacks and icons are inline SVG. The site has to
 * open from inside a customer network that cannot reach the internet.
 */
:root {
  color-scheme: light;
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-surface-raised: #eef1f5;
  --color-text: #14171c;
  --color-text-muted: #4a5361;
  --color-border: #c9d0d9;
  --color-border-strong: #6b7685;
  --color-accent: #0b5cad;
  --color-accent-text: #ffffff;
  --color-accent-soft: #e3eefa;
  --color-focus: #0b5cad;
  --color-danger: #b3261e;
  --color-warning: #8a5300;
  --color-success: #1d6b35;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --line-height: 1.6;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --wrap: 72rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-bg: #0f1216;
    --color-surface: #171b21;
    --color-surface-raised: #1f242c;
    --color-text: #e7eaee;
    --color-text-muted: #a9b2bf;
    --color-border: #343b46;
    --color-border-strong: #8994a3;
    --color-accent: #6cb2ff;
    --color-accent-text: #0f1216;
    --color-accent-soft: #1b2b40;
    --color-focus: #6cb2ff;
    --color-danger: #ff8a80;
    --color-warning: #f2c46d;
    --color-success: #7fd49a;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #0f1216;
  --color-surface: #171b21;
  --color-surface-raised: #1f242c;
  --color-text: #e7eaee;
  --color-text-muted: #a9b2bf;
  --color-border: #343b46;
  --color-border-strong: #8994a3;
  --color-accent: #6cb2ff;
  --color-accent-text: #0f1216;
  --color-accent-soft: #1b2b40;
  --color-focus: #6cb2ff;
  --color-danger: #ff8a80;
  --color-warning: #f2c46d;
  --color-success: #7fd49a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: var(--line-height);
  -webkit-text-size-adjust: 100%;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--space-5); }

a { color: var(--color-accent); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

/* --- header ------------------------------------------------------------------ */
.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.top__in { display: flex; align-items: center; gap: var(--space-4); min-height: 3.5rem; }
.brand { display: flex; align-items: center; gap: var(--space-2); font-weight: 650; letter-spacing: -0.01em; text-decoration: none; color: var(--color-text); }
.brand svg { display: block; }
.brand__short { color: var(--color-text-muted); font-weight: 450; }
.top nav { margin-inline-start: auto; display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; }
.top nav a { color: var(--color-text-muted); text-decoration: none; font-size: 0.95rem; }
.top nav a:hover { color: var(--color-text); }
/* `.top nav a` (0,1,2) outranks `.btn--primary` (0,1,0), so without this the header CTA
   inherits the muted link colour and its label all but disappears against the accent fill.
   Caught by rendering the page, not by reading the stylesheet. */
.top nav a.btn--primary { color: var(--color-accent-text); }
.top nav a.btn--ghost { color: var(--color-text); }

.btn {
  display: inline-block; padding: 0.55rem 1rem; border-radius: var(--radius-md);
  text-decoration: none; font-weight: 550; border: 1px solid transparent; cursor: pointer;
  font-size: 0.95rem; font-family: inherit;
}
.btn--primary { background: var(--color-accent); color: var(--color-accent-text); }
.btn--ghost { border-color: var(--color-border-strong); color: var(--color-text); background: transparent; }
.btn--lg { padding: 0.75rem 1.4rem; font-size: 1.05rem; }

.lang { display: flex; gap: 0.35rem; }
.lang a { padding: 0.2rem 0.45rem; border-radius: var(--radius-sm); font-size: 0.85rem; text-decoration: none; color: var(--color-text-muted); }
.lang a[aria-current="true"] { background: var(--color-accent-soft); color: var(--color-accent); font-weight: 600; }

.themebtn { background: transparent; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 0.35rem 0.5rem; color: var(--color-text-muted); line-height: 0; }

/* --- hero -------------------------------------------------------------------- */
.hero { padding: var(--space-8) 0 var(--space-6); }
.hero h1 { font-size: clamp(2rem, 5.5vw, 3.2rem); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 var(--space-4); max-width: 20ch; }
.hero p.lede { font-size: clamp(1.05rem, 2.2vw, 1.25rem); color: var(--color-text-muted); max-width: 60ch; margin: 0 0 var(--space-5); }
.hero__cta { display: flex; gap: var(--space-3); flex-wrap: wrap; }

.badge {
  display: inline-flex; align-items: center; gap: 0.4rem; margin-bottom: var(--space-4);
  padding: 0.3rem 0.7rem; border-radius: 999px; font-size: 0.85rem; font-weight: 550;
  background: var(--color-accent-soft); color: var(--color-accent);
}

/* --- sections ---------------------------------------------------------------- */
section { padding: var(--space-8) 0; border-top: 1px solid var(--color-border); }
section > .wrap > h2 { font-size: clamp(1.4rem, 3.2vw, 2rem); letter-spacing: -0.015em; margin: 0 0 var(--space-3); }
section > .wrap > p.sub { color: var(--color-text-muted); max-width: 70ch; margin: 0 0 var(--space-6); }

.grid { display: grid; gap: var(--space-4); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }

.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-5);
}
.card h3 { margin: 0 0 var(--space-2); font-size: 1.05rem; }
.card p { margin: 0; color: var(--color-text-muted); font-size: 0.95rem; }

/* A claim that carries its evidence. The site never states a capability without one. */
.proof { margin-top: var(--space-3); font-size: 0.85rem; color: var(--color-text-muted); font-family: var(--font-mono); }
.proof::before { content: "✓ "; color: var(--color-success); font-weight: 700; }

.note {
  border-inline-start: 3px solid var(--color-warning);
  background: var(--color-surface-raised); padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md); color: var(--color-text); margin: var(--space-5) 0;
}
.note strong { color: var(--color-warning); }

table.t { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
table.t th, table.t td { text-align: start; padding: var(--space-3); border-bottom: 1px solid var(--color-border); vertical-align: top; }
table.t th { color: var(--color-text-muted); font-weight: 600; }
.scroll { overflow-x: auto; }

.tier { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-5); display: flex; flex-direction: column; }
.tier--hi { border-color: var(--color-accent); }
.tier h3 { margin: 0 0 0.2rem; font-size: 1.15rem; }
.tier .who { color: var(--color-text-muted); font-size: 0.9rem; margin: 0 0 var(--space-4); }
.tier .price { font-weight: 600; margin: 0 0 var(--space-4); }
.tier ul { margin: 0 0 var(--space-5); padding-inline-start: 1.1rem; color: var(--color-text-muted); font-size: 0.92rem; }
.tier li { margin-bottom: 0.3rem; }
.tier .btn { margin-top: auto; text-align: center; }

details.faq { border-bottom: 1px solid var(--color-border); padding: var(--space-4) 0; }
details.faq summary { cursor: pointer; font-weight: 600; }
details.faq p { color: var(--color-text-muted); margin: var(--space-3) 0 0; }

footer { border-top: 1px solid var(--color-border); padding: var(--space-6) 0; color: var(--color-text-muted); font-size: 0.9rem; }
footer .cols { display: grid; gap: var(--space-5); grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
footer a { color: var(--color-text-muted); }

@media (max-width: 40rem) {
  .top nav a:not(.btn) { display: none; }
  .hero { padding-top: var(--space-6); }
  /* At phone width the brand was wrapping onto a second line and colliding with the theme
     button and the CTA. The short name is a nicety; the header staying on one line is not. */
  .brand { white-space: nowrap; }
  .brand__short { display: none; }
  .top__in { gap: var(--space-2); }
  .top nav { gap: var(--space-2); }
}