:root {
  --font-ui: "IBM Plex Sans", Aptos, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --color-red-cross: #d8001b;
  --color-red-dark: #9f0014;
  --color-red-pressed: #79000f;
  --color-red-soft: #fff0f2;
  --color-ink: #20242b;
  --color-ink-strong: #111318;
  --color-muted: #69717d;
  --color-subtle: #8b95a1;
  --color-line: #dfe3e8;
  --color-canvas: #f5f6f7;
  --color-surface: #ffffff;
  --color-surface-raised: #f9fafb;
  --color-map-blue: #eaf4fb;
  --color-info: #1d4ed8;
  --color-success: #2d7a3e;
  --color-warning: #b7791f;
  --color-danger: #9f0014;

  --radius-control: 6px;
  --radius-panel: 8px;
  --shadow-panel: 0 10px 30px rgba(31, 41, 55, 0.08);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
}

html,
body {
  font-family: var(--font-ui);
  color: var(--color-ink);
  background: var(--color-canvas);
}

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

.app-shell {
  min-height: 100vh;
  background: var(--color-canvas);
}

.app-header {
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}

.app-logo {
  height: 36px;
  width: auto;
  flex: none;
}

.app-title {
  margin: 0;
  font-size: 18px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0;
}

.btn {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-control);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 650;
  line-height: 1;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-red-cross);
  color: #fff;
  border: 1px solid var(--color-red-cross);
}

.btn-primary:hover {
  background: var(--color-red-dark);
  border-color: var(--color-red-dark);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid transparent;
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-panel);
}

.field-label {
  display: block;
  margin-bottom: 6px;
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-red-dark);
}