/**
 * COBALT LABS — design tokens
 * Warm paper, gold as the primary accent, cobalt used sparingly.
 */

:root {
  --color-canvas: #faf7f2;
  --color-canvas-muted: #f3ede3;
  --color-canvas-warm: #ebe3d4;
  --color-canvas-panel: #fffcf7;

  --color-ink: #141414;
  --color-ink-secondary: #5c5c5c;
  --color-ink-muted: #8a8a8a;

  /* Premium gold (labels, rules, prices, primary actions) */
  --color-gold: #b8975a;
  --color-gold-light: #dcc9a0;
  --color-gold-dark: #8f7340;
  --color-gold-muted: rgba(184, 151, 90, 0.14);

  /* Cobalt sits beside gold: wordmark, hairlines, focus. Not large fills. */
  --color-cobalt: #1d4e89;
  --color-cobalt-deep: #163a68;
  --color-cobalt-soft: rgba(0, 71, 171, 0.07);
  --color-cobalt-line: rgba(0, 71, 171, 0.32);
  --color-accent: var(--color-cobalt);
  --color-accent-hover: var(--color-cobalt-deep);

  --color-border: #e0d8cb;
  --color-border-strong: #c9bba5;
  --color-border-gold: rgba(184, 151, 90, 0.45);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --text-display: clamp(2.25rem, 4vw + 1rem, 3.75rem);
  --text-h1: clamp(1.875rem, 2vw + 1rem, 2.75rem);
  --text-h2: clamp(1.5rem, 1.5vw + 0.75rem, 2rem);
  --text-h3: 1.125rem;
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-label: 0.75rem;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;

  --tracking-tight: -0.03em;
  --tracking-label: 0.08em;

  --leading-tight: 1.15;
  --leading-body: 1.65;

  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  --radius-none: 0;
  --radius-sm: 10px;
  --radius-md: 16px;

  --container-max: 1200px;
  --grid-gutter: 1.5rem;
  --header-height: 72px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 240ms;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 100%;
  padding: 1rem 1.5rem;
  font-family: var(--font-sans);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: #fff;
  background: #1d4e89;
  border: 1px solid #1d4e89;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: none;
  letter-spacing: 0.12em;
  transition: filter var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible {
  outline: 2px solid var(--color-cobalt);
  outline-offset: 3px;
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-ink);
  background: transparent;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

.btn-secondary:hover {
  border-color: var(--color-cobalt-line);
  color: var(--color-cobalt-deep);
}

.card-panel {
  position: relative;
  background: var(--color-canvas-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.8) inset,
    0 18px 36px -28px rgba(20, 36, 64, 0.4);
  overflow: hidden;
}

.card-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold-light) 62%, var(--color-cobalt) 100%);
}

.card-panel--muted {
  background: var(--color-canvas-muted);
}