/* brand.css — the Mirage brand, shared by all three pages (/, /order/,
 * /cabinet/): self-hosted fonts, colour tokens (dark default, light via
 * html[data-theme="light"], flipped by js/theme.js), reset and typography,
 * the shared header/footer (js/chrome.js), buttons, form controls, cards,
 * badges, alerts and the small helpers js/ui.js renders. Page-specific rules
 * live in landing.css (/) and app.css (/order/ and /cabinet/).
 *
 * Look: the Mirage design reference (ops / infrastructure) — amber accent on
 * a near-black ground, PT Root UI for text, JetBrains Mono for labels and
 * numbers, hairline borders, tiny radii, one glow (the primary button). The
 * light palette is derived from it (same hues, amber darkened for text
 * contrast).
 *
 * Fonts are self-hosted (css/fonts/*.woff2: Latin + Cyrillic subsets, SIL
 * OFL 1.1) — CSP `font-src 'self'`, no third-party origin.
 */

@font-face {
  font-family: "PT Root UI";
  src: url("/css/fonts/PTRootUI-VF.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("/css/fonts/JetBrainsMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("/css/fonts/JetBrainsMono-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------------------------------------------------------------- tokens */

:root {
  color-scheme: dark;

  --bg: #0e0e11;
  --bg-0: #08090b;
  --surface: #14151a;
  --surface-2: #1c1d23;
  --band: rgba(28, 29, 35, 0.45);

  --text: #d7d8db;
  --text-strong: #f4f4f5;
  --text-muted: #878b91;
  --text-faint: #555860;

  --accent: #fbb26a;
  --accent-strong: #f9a04e;
  --accent-fill: #fbb26a;
  --accent-fill-hover: #f9a04e;
  --accent-contrast: #1a1400;
  --accent-dim: rgba(251, 178, 106, 0.12);
  --accent-border: rgba(251, 178, 106, 0.3);
  --haze: rgba(251, 178, 106, 0.07);
  --glow: 0 0 24px rgba(251, 178, 106, 0.25);

  --ok: #5cb87a;
  --success: #5cb87a;
  --warning: #e0b04a;
  --danger: #eb5757;
  --danger-strong: #f28b8b;

  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --chip: rgba(255, 255, 255, 0.04);
  --dot: rgba(255, 255, 255, 0.05);
  --header-bg: rgba(14, 14, 17, 0.85);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3);
  --focus-ring: #fbb26a;

  --font-sans: "PT Root UI", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;

  --container: 1160px;
  --container-mid: 880px;
  --container-narrow: 720px;
  --header-h: 60px;
  --anchor-offset: 76px;
  --ease: 120ms ease;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
}

html[data-theme="light"] {
  color-scheme: light;

  --bg: #f5f4f0;
  --bg-0: #edebe5;
  --surface: #ffffff;
  --surface-2: #f0eee9;
  --band: rgba(17, 17, 20, 0.035);

  --text: #2b2c31;
  --text-strong: #111114;
  --text-muted: #5a5e66;
  --text-faint: #8b8f97;

  --accent: #9a4f00;
  --accent-strong: #7d3f00;
  --accent-fill: #fbb26a;
  --accent-fill-hover: #f59e44;
  --accent-contrast: #1a1400;
  --accent-dim: rgba(251, 178, 106, 0.24);
  --accent-border: rgba(154, 79, 0, 0.35);
  --haze: rgba(251, 178, 106, 0.32);
  --glow: 0 4px 18px rgba(217, 138, 43, 0.35);

  --ok: #1f7a3e;
  --success: #1f7a3e;
  --warning: #8a6100;
  --danger: #b3261e;
  --danger-strong: #8c1d18;

  --border: rgba(17, 17, 20, 0.11);
  --border-strong: rgba(17, 17, 20, 0.22);
  --chip: rgba(17, 17, 20, 0.045);
  --dot: rgba(17, 17, 20, 0.08);
  --header-bg: rgba(245, 244, 240, 0.88);
  --shadow-card: 0 1px 3px rgba(17, 17, 20, 0.08);
  --focus-ring: #9a4f00;
}

/* ------------------------------------------------------------------ base */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  scroll-padding-top: var(--anchor-offset);
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent-fill);
  color: var(--accent-contrast);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 var(--space-3);
  color: var(--text-strong);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(1.75rem, 3.6vw, 2.25rem);
}

h2 {
  font-size: 1.375rem;
}

h3 {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 var(--space-3);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

code,
.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

ul {
  margin: 0 0 var(--space-3);
  padding-left: 1.2em;
}

li {
  margin-bottom: var(--space-1);
}

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

img,
svg {
  max-width: 100%;
}

main:focus {
  outline: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip {
  position: absolute;
  top: -120px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--accent-fill);
  color: var(--accent-contrast);
  font-weight: 700;
  text-decoration: none;
}

.skip:focus {
  top: 12px;
}

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

.container--mid {
  max-width: var(--container-mid);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.page {
  padding-top: 40px;
  padding-bottom: 72px;
}

/* -------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 22px;
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-strong);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.1;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--ease), border-color var(--ease), color var(--ease),
    box-shadow var(--ease);
}

.btn:hover,
.btn:focus-visible,
.brand:focus-visible,
.skip:focus-visible {
  text-decoration: none;
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--accent-fill);
  color: var(--accent-contrast);
}

.btn--primary:hover:not(:disabled) {
  background: var(--accent-fill-hover);
  box-shadow: var(--glow);
}

.btn--outline {
  border-color: var(--border-strong);
}

.btn--outline:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--outline:disabled {
  border-style: dashed;
  color: var(--text-muted);
}

.btn--danger {
  border-color: var(--danger);
  color: var(--danger);
}

.btn--danger:hover:not(:disabled) {
  background: color-mix(in srgb, var(--danger) 12%, transparent);
}

.btn:disabled {
  cursor: not-allowed;
}

.btn--primary:disabled {
  opacity: 0.5;
}

.btn--sm {
  min-height: 34px;
  padding: 0 14px;
  font-size: 0.8125rem;
}

.btn--lg {
  min-height: 52px;
  padding: 0 28px;
  font-size: 1rem;
}

.btn--block {
  width: 100%;
}

/* --------------------------------------------------------------- header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: var(--container);
  min-height: var(--header-h);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.brand:hover {
  opacity: 0.85;
  text-decoration: none;
}

.brand svg {
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  flex: 1;
  gap: 28px;
  min-width: 0;
}

.site-nav a {
  padding: 6px 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--ease);
}

.site-nav a:hover {
  color: var(--text-strong);
  text-decoration: none;
}

.site-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.seg {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
}

.seg button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 32px;
  padding: 0 8px;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
}

.seg button + button {
  border-left: 1px solid var(--border-strong);
}

.seg button:hover {
  color: var(--text-strong);
}

.seg button[aria-pressed="true"] {
  background: var(--accent-dim);
  color: var(--accent);
}

/* --------------------------------------------------------------- footer */

.site-footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg-0);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
}

.site-footer__brand p {
  max-width: 34ch;
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.site-footer__nav a {
  color: var(--text-muted);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: color var(--ease);
}

.site-footer__nav a:hover {
  color: var(--text-strong);
  text-decoration: none;
}

.site-footer__legal {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.lp-noscript {
  padding: 24px;
  color: var(--text-muted);
  text-align: center;
}

/* ------------------------------------------------- eyebrow, chip, dot */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--chip);
  color: var(--text-muted);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.chip--mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

button.chip {
  cursor: pointer;
  transition: border-color var(--ease), color var(--ease);
}

button.chip:hover {
  color: var(--text-strong);
}

.chip[aria-pressed="true"] {
  border-color: var(--accent-border);
  background: var(--accent-dim);
  color: var(--accent);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: var(--space-4);
}

/* ---------------------------------------------- cards, forms, badges */

.card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.card + .card {
  margin-top: var(--space-3);
}

.card > :last-child {
  margin-bottom: 0;
}

.field {
  margin-bottom: var(--space-3);
}

.field label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.field input[type="text"],
.field input[type="email"],
.field input[type="number"],
.field select,
.field textarea {
  width: 100%;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text-strong);
  transition: border-color var(--ease);
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  border-color: var(--text-faint);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
}

.field textarea {
  resize: vertical;
  min-height: 5em;
}

.field input[aria-invalid="true"],
.field select[aria-invalid="true"] {
  border-color: var(--danger);
}

.field-error {
  margin-top: var(--space-1);
  color: var(--danger-strong);
  font-size: 0.85rem;
}

.field-error:empty {
  display: none;
}

.field-hint {
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.field-optional {
  margin-left: 6px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge {
  display: inline-block;
  padding: 2px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge--ok {
  color: var(--ok);
  border-color: var(--ok);
}

.badge--warn {
  color: var(--warning);
  border-color: var(--warning);
}

.badge--danger {
  color: var(--danger);
  border-color: var(--danger);
}

.badge--accent {
  color: var(--accent);
  border-color: var(--accent-border);
}

.alert {
  margin-bottom: var(--space-3);
  padding: 16px;
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--danger) 12%, var(--surface));
  color: var(--text);
}

.alert__title {
  margin-bottom: 4px;
  color: var(--danger-strong);
  font-weight: 700;
}

.alert--info {
  border-color: var(--accent-border);
  background: color-mix(in srgb, var(--accent-fill) 10%, var(--surface));
}

.alert--info .alert__title {
  color: var(--accent);
}

.alert--warning {
  margin-bottom: 0;
  border-color: var(--warning);
  background: color-mix(in srgb, var(--warning) 12%, var(--surface));
}

.alert--warning .alert__title {
  color: var(--warning);
}

.empty {
  padding: var(--space-3) 0;
  color: var(--text-muted);
}

.muted {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.row--between {
  justify-content: space-between;
}

.spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.kv {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-1) var(--space-3);
  font-size: 0.9375rem;
}

.kv dt {
  color: var(--text-muted);
}

.kv dd {
  margin: 0;
  color: var(--text-strong);
}

.divider {
  margin: var(--space-4) 0;
  border: none;
  border-top: 1px solid var(--border);
}

/* ------------------------------------------------------------ responsive */

@media (max-width: 1023px) {
  :root {
    --anchor-offset: 108px;
  }

  .site-header__bar {
    flex-wrap: wrap;
    row-gap: 0;
  }

  .site-nav {
    order: 3;
    flex: 0 0 100%;
    gap: 22px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }
}

@media (max-width: 639px) {
  .container,
  .site-header__bar {
    padding-right: 16px;
    padding-left: 16px;
  }

  .site-header__bar {
    gap: 12px;
  }

  .seg button {
    min-width: 30px;
    padding: 0 6px;
  }

  .card {
    padding: 20px;
  }
}

@media (max-width: 479px) {
  .cta-row .btn {
    width: 100%;
  }
}

@media (max-width: 379px) {
  .brand__text {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation-duration: 2.4s;
  }
}