:root {
  --bg: #F7F5F0;
  --surface: #FFFFFF;
  --surface-alt: #EFEDE6;
  --ink: #1A1715;
  --ink-2: #5A5450;
  --ink-3: #8A847E;
  --line: #D9D5CC;
  --line-strong: #B8B2A6;
  --accent: #027EFB;
  --accent-soft: #DBEAFE;
  --good: #15803D;
  --good-soft: #D1FAE5;
  --warn: #B45309;
  --warn-soft: #FEF3C7;
  --bad: #B91C1C;
  --bad-soft: #FEE2E2;
  --shadow: 0 1px 2px rgba(26,23,21,0.04), 0 4px 12px rgba(26,23,21,0.06);
  --radius: 4px;
  --radius-lg: 8px;
}
[data-theme="dark"] {
  --bg: #0F0E0C;
  --surface: #1A1715;
  --surface-alt: #24201D;
  --ink: #F7F5F0;
  --ink-2: #B8B2A6;
  --ink-3: #7A746E;
  --line: #2E2A26;
  --line-strong: #44403B;
  --accent: #3B9EFF;
  --accent-soft: #1E3A5C;
  --good: #4ADE80;
  --warn: #FCD34D;
  --bad: #F87171;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.font-display { font-family: 'Anton', sans-serif; letter-spacing: 0.02em; text-transform: uppercase; }
.font-mono { font-family: 'JetBrains Mono', monospace; }

input, select, textarea, button {
  font-family: inherit;
  font-size: 14px;
}
input, select, textarea {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 8px 10px;
  width: 100%;
  transition: border-color 0.12s, box-shadow 0.12s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input[type="number"] { font-family: 'JetBrains Mono', monospace; }
textarea { resize: vertical; min-height: 70px; }

button {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.1s;
}
button:hover { background: var(--surface-alt); border-color: var(--ink-2); }
button:active { transform: translateY(1px); }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.primary:hover { background: var(--ink); border-color: var(--ink); }
button.danger { color: var(--bad); border-color: var(--bad); }
button.danger:hover { background: var(--bad); color: #fff; }
button.ghost { background: transparent; border-color: transparent; }
button.ghost:hover { background: var(--surface-alt); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

a { color: var(--accent); }
a:hover { color: var(--ink); }

/* App-Shell: TopBar */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  flex-wrap: wrap;
  gap: 12px;
}
.topbar .brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.topbar .brand-link:hover { color: var(--ink); }
.topbar .brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  display: block;
  flex-shrink: 0;
}
.topbar .brand-title {
  font-family: 'Anton', sans-serif;
  font-size: 22px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0;
}
.topbar .brand-title .accent { color: var(--accent); }
.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  text-decoration: none;
  color: var(--ink-2);
  padding: 6px 12px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 14px;
}
.topbar nav a:hover { background: var(--surface-alt); color: var(--ink); }
.topbar nav a.active { background: var(--accent); color: #fff; }
.topbar .topbar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--ink-2);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--ink);
  color: var(--bg);
  padding: 10px 16px;
  border-radius: var(--radius-lg);
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 1000;
  max-width: 360px;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { background: var(--bad); color: #fff; }
.toast.success { background: var(--good); color: #fff; }

/* Standard-Page */
.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}
.page-narrow {
  max-width: 480px;
  margin: 60px auto;
  padding: 24px;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card h2 {
  font-family: 'Anton', sans-serif;
  font-size: 22px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.card h3 { font-size: 16px; font-weight: 500; margin: 0 0 8px; }

/* Form fields */
.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  margin-bottom: 12px;
}
.field label {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.field label .unit {
  text-transform: none;
  letter-spacing: 0;
  color: var(--ink-3);
  font-weight: 400;
  margin-left: 4px;
}

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 600px) { .grid-2 { grid-template-columns: 1fr; } }

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }

/* Tables */
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
table.data th, table.data td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
}
table.data th {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
table.data tr:hover { background: var(--surface-alt); }

.empty-state {
  padding: 32px;
  text-align: center;
  color: var(--ink-3);
  font-size: 14px;
}

.error-box, .info-box {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 12px;
}
.error-box { background: var(--bad-soft); color: var(--bad); border: 1px solid var(--bad); }
.info-box { background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent); }

.badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--ink-2);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
}
.badge.good { background: var(--good-soft); color: var(--good); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.bad { background: var(--bad-soft); color: var(--bad); }

.code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--surface-alt);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 13px;
}

*:focus { outline: none; }
*:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media print {
  .topbar, .toast, button { display: none !important; }
}