/* TrailGuard Design System — shared tokens + self-hosted fonts.
   Extracted from the setup guide (whose palette was itself lifted from the
   firmware installer). Load this before styles.css / setupguide.css. */

/* --- Self-hosted fonts.
   All platforms render identical type: Inter stands in for SF Pro (Apple's
   license restricts SF Pro to Apple platforms), Roboto Mono for SF Mono,
   Shuttleblock is the TrailGuard brand display face. --- */
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Roboto Mono";
  src: url("../fonts/roboto-mono-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Roboto Mono";
  src: url("../fonts/roboto-mono-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Shuttleblock";
  src: url("../fonts/Shuttleblock-500.otf") format("opentype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Shuttleblock";
  src: url("../fonts/Shuttleblock-700.otf") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* TrailGuard color system
   Dark forest-green surfaces, warm orange signal accent, conservation green. */
:root {
  /* --- Brand base palette --- */
  --tg-ink-950: #0b0f0c; /* deepest background */
  --tg-ink-900: #101813; /* primary surface */
  --tg-ink-850: #111d16; /* raised surface */
  --tg-ink-800: #16241c; /* highest surface */
  --tg-ink-700: #1a2a21; /* hairline border */
  --tg-ink-600: #2c3f34; /* focus ring / strong border */

  --tg-paper: #f7f5ee;   /* warm off-white (document/print) */
  --tg-paper-2: #efece1; /* secondary paper */
  --tg-cream: #fbf8ec;   /* logo cream */

  --tg-text-100: #e8efe9; /* primary text on dark */
  --tg-text-300: #9db3a5; /* muted text on dark */
  --tg-text-900: #14201a; /* primary text on paper */
  --tg-text-600: #51695c; /* muted text on paper */

  /* Signal accent — orange */
  --tg-orange-500: #ff7a00;
  --tg-orange-600: #e06b00;
  --tg-orange-100: #ffe7cc;

  /* Conservation green */
  --tg-green-600: #1f7a53;
  --tg-green-500: #2a9468;
  --tg-green-100: #d3ece0;

  /* Status */
  --tg-warn: #f59e0b;
  --tg-warn-100: #fcd34d;
  --tg-danger: #e0563b;
  --tg-info: #8fe0b7;
}

/* TrailGuard typography
   Self-hosted webfonts first so every OS/browser renders the same faces;
   system stacks remain as fallback while fonts load. Mono is used for
   versions, serials, firmware strings and log output. */
:root {
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Roboto Mono", ui-monospace, "SFMono-Regular", Menlo, Monaco,
    Consolas, "Liberation Mono", "Courier New", monospace;
  --font-display: "Shuttleblock", "Inter", system-ui, sans-serif;

  /* Type scale (1.25 major-third-ish, tuned) */
  --text-xs: 0.75rem;   /* 12px — captions, tags */
  --text-sm: 0.85rem;   /* ~13.6px — secondary */
  --text-base: 1rem;    /* 16px — body */
  --text-md: 1.15rem;   /* ~18px — lead */
  --text-lg: 1.3rem;    /* ~21px — card titles */
  --text-xl: 1.7rem;    /* ~27px — section heads */
  --text-2xl: 2.2rem;   /* ~35px — page titles */
  --text-3xl: 3rem;     /* 48px — display */

  /* Weights */
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Line heights */
  --leading-tight: 1.2;
  --leading-snug: 1.45;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* Letter spacing */
  --tracking-eyebrow: 0.05em; /* uppercase eyebrows */
  --tracking-tag: 0.04em;
  --tracking-tight: -0.01em;
}

/* TrailGuard spacing, radii, shadows */
:root {
  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 18px;
  --radius-pill: 999px;

  /* Shadows — dark UI relies on borders + faint elevation */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.35);
  --shadow-doc: 0 12px 40px rgba(20, 32, 26, 0.12);

  /* Accent inset glow (primary-button treatment) */
  --inset-accent: inset 0 0 0 1px var(--tg-orange-500);

  /* Transitions */
  --ease: 0.18s ease;
  --ease-fast: 0.08s ease;
}

/* --- Cross-platform normalization --- */

/* Form controls do not inherit fonts by default (each OS substitutes its own
   UI font); force the page fonts everywhere. */
button, input, select, textarea {
  font-family: inherit;
}

/* Hide <details> markers in all engines (Chrome/Safari use the pseudo,
   Firefox uses list-style / ::marker). */
summary::marker {
  content: "";
}
summary::-webkit-details-marker {
  display: none;
}

/* Neutralize Chrome's autofill yellow/blue flash on dark inputs. */
input:-webkit-autofill,
textarea:-webkit-autofill {
  -webkit-box-shadow: 0 0 0 100px var(--tg-ink-850) inset;
  -webkit-text-fill-color: var(--tg-text-100);
  caret-color: var(--tg-text-100);
}

/* Consistent scrollbars (macOS overlay vs Windows gutter). */
html {
  scrollbar-color: #2c3f34 transparent; /* Firefox */
  scrollbar-width: thin;
}
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #22312a;
  border-radius: 8px;
  border: 3px solid #0b0f0c;
}
::-webkit-scrollbar-thumb:hover {
  background: #2c3f34;
}