/* TauTech design tokens — ported from the approved Claude Design mockup. */
@import url('https://fonts.googleapis.com/css2?family=Barlow:wght@400;500;700&family=Barlow+Condensed:wght@400;600&display=swap');

:root {
  --color-bg: #f2f2f3;
  --color-surface: #e9e9ea;
  --color-text: #1d1f20;
  --color-accent: #5980a6;
  --color-accent-2: #728fab;
  --color-divider: color-mix(in srgb, #1d1f20 16%, transparent);

  --color-neutral-100: #f5f5f8;
  --color-neutral-200: #e7e7ea;
  --color-neutral-300: #d4d4d7;
  --color-neutral-400: #b7b7ba;
  --color-neutral-500: #98989b;
  --color-neutral-600: #7a7a7d;
  --color-neutral-700: #5d5d60;
  --color-neutral-800: #424244;
  --color-neutral-900: #2b2b2d;

  --color-accent-100: #eef6ff;
  --color-accent-200: #d6ebff;
  --color-accent-300: #b5d9fd;
  --color-accent-400: #94bce3;
  --color-accent-500: #749dc4;
  --color-accent-600: #597ea3;
  --color-accent-700: #416180;
  --color-accent-800: #2c455d;
  --color-accent-900: #1d2d3d;

  --font-heading: "Barlow Condensed", system-ui, sans-serif;
  --font-heading-weight: 600;
  --font-body: "Barlow", system-ui, sans-serif;

  --space-1: 3.4px;
  --space-2: 6.8px;
  --space-3: 10.2px;
  --space-4: 13.6px;
  --space-6: 20.4px;
  --space-8: 27.2px;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 7px;

  --shadow-sm: 0 1px 2px color-mix(in srgb, #2b2b2d 14%, transparent);
  --shadow-md: 0 3px 10px color-mix(in srgb, #2b2b2d 16%, transparent);
  --shadow-lg: 0 12px 32px color-mix(in srgb, #2b2b2d 22%, transparent);
}

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 var(--space-2);
}
h1 { font-size: 42px; }
h2 { font-size: 32px; }
h3 { font-size: 25px; }
h4 { font-size: 20px; }
h5 { font-size: 16px; }
h6 { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; }
p { margin: 0 0 var(--space-3); }
a { color: var(--color-accent); text-underline-offset: 3px; }
img { display: block; max-width: 100%; }
.text-muted { color: color-mix(in srgb, var(--color-text) 55%, transparent); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.hr { height: 1px; border: 0; margin: var(--space-4) 0; background: var(--color-divider); }

/* — blueprint frame: corner brackets drawn with layered backgrounds, no markup needed — */
.blueprint {
  --corner-size: 11px;
  --corner-color: color-mix(in srgb, var(--color-text) 55%, transparent);
  position: relative;
  border: 1px solid var(--color-divider);
  border-radius: 0;
  background-repeat: no-repeat;
  background-size: var(--corner-size) var(--corner-size);
  background-image:
    linear-gradient(var(--corner-color), var(--corner-color)), linear-gradient(var(--corner-color), var(--corner-color)),
    linear-gradient(var(--corner-color), var(--corner-color)), linear-gradient(var(--corner-color), var(--corner-color)),
    linear-gradient(var(--corner-color), var(--corner-color)), linear-gradient(var(--corner-color), var(--corner-color)),
    linear-gradient(var(--corner-color), var(--corner-color)), linear-gradient(var(--corner-color), var(--corner-color));
  background-position:
    -6px -6px, -6px -6px,
    calc(100% + 6px) -6px, calc(100% + 6px) -6px,
    -6px calc(100% + 6px), -6px calc(100% + 6px),
    calc(100% + 6px) calc(100% + 6px), calc(100% + 6px) calc(100% + 6px);
}
.blueprint {
  background-size: 1px 11px, 11px 1px, 1px 11px, 11px 1px, 1px 11px, 11px 1px, 1px 11px, 11px 1px;
  background-position:
    -6px -6px, -6px -1px,
    calc(100% + 6px) -6px, calc(100% - 5px) -1px,
    -6px calc(100% + 6px), -6px calc(100% - 5px),
    calc(100% + 6px) calc(100% + 6px), calc(100% - 5px) calc(100% + 5px);
}

/* — buttons — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid var(--color-divider);
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: 0;
}
.btn svg { display: block; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--color-accent); color: var(--color-bg); border-color: var(--color-accent); }
.btn-primary:hover { background: var(--color-accent-600); }
.btn-primary:active { background: var(--color-accent-700); }
.btn-secondary { background: transparent; border-color: var(--color-divider); color: var(--color-text); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: var(--space-1); border-color: transparent; }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-icon { width: 36px; height: 36px; padding: 0; }
.btn-block { width: 100%; margin-top: var(--space-2); }

/* — forms — */
.field { margin-bottom: var(--space-4); }
.field > label {
  display: block; font-size: 12px; margin-bottom: 5px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
.input, input[type="text"], input[type="email"], input[type="tel"], input[type="search"],
input[type="password"], input[type="number"], textarea, select {
  width: 100%; min-height: 36px; padding: 6px 10px; font: inherit;
  font-size: 14px; color: var(--color-text); caret-color: var(--color-accent);
  background: var(--color-surface);
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
}
.input:hover, input:hover, select:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.input:focus-visible, input:focus-visible, select:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
textarea { min-height: 90px; resize: vertical; }

.radio { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-size: 14px; }
.radio input, .seg-opt input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.radio .dot { width: 16px; height: 16px; flex: none; border-radius: 50%; border: 1.5px solid var(--color-divider); }
.radio:hover .dot { border-color: var(--color-accent); }
.radio input:checked + .dot { border-color: var(--color-accent); background: var(--color-accent); box-shadow: inset 0 0 0 4px var(--color-bg); }
.seg { display: inline-flex; overflow: hidden; border: 1px solid var(--color-divider); border-radius: var(--radius-md); }
.seg-opt { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; font-size: 13px; cursor: pointer; }
.seg-opt + .seg-opt { border-left: 1px solid var(--color-divider); }
.seg-opt:has(input:checked) { background: var(--color-accent); color: var(--color-bg); }
.seg-opt:not(:has(input:checked)):hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }

/* — cards — */
.card { display: flex; flex-direction: column; gap: var(--space-2); padding: var(--space-3); border-radius: 0; background: transparent; border: 1px solid var(--color-divider); }
.card-kicker { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent); }
.card-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 17px; line-height: 1.2; }
.card-body { margin: 0; font-size: 13px; opacity: 0.8; flex: 1; }
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-md { box-shadow: var(--shadow-md); }
.elev-lg { box-shadow: var(--shadow-lg); }

/* — tags — */
.tag { display: inline-flex; align-items: center; font-size: 11px; letter-spacing: 0.02em; padding: 3px 10px; border-radius: 3px; }
.tag-accent { background: var(--color-accent-100); color: var(--color-accent-800); }
.tag-neutral { background: var(--color-neutral-100); color: var(--color-neutral-800); }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent); }

/* — tables — */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: color-mix(in srgb, var(--color-text) 60%, transparent); padding: var(--space-2); border-bottom: 1px solid var(--color-divider); }
.table td { padding: var(--space-2); border-bottom: 1px solid color-mix(in srgb, var(--color-text) 8%, transparent); }
.table tbody tr:hover { background: color-mix(in srgb, var(--color-text) 4%, transparent); }

/* — hover lift (category tiles, product cards) — */
.tt-hover-lift { transition: transform .15s ease, box-shadow .15s ease; }
.tt-hover-lift:hover { transform: translateY(-2px); }
.tt-fade-in { animation: tt-fade .4s ease both; }
@keyframes tt-fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }