/* ringkes CSS Tokens & Styles — Perspective A: Fresh Tropical Tri-Harmony */
:root {
  --color-teal-primary: #0F766E;
  --color-teal-hover: #115E59;
  --color-teal-fresh: #0D9488;
  --color-sky-primary: #0369A1;
  --color-sky-soft: #E0F2FE;
  --color-coral-text: #C2410C;
  --color-coral-soft: #FFEDD5;
  --color-text-primary: #0F172A;
  --color-text-secondary: #334155;
  --color-text-muted: #64748B;
  --color-bg-canvas: #F8FAFC;
  --color-bg-surface: #FFFFFF;
  --color-bg-mint-tint: #F0FDFA;
  --color-border-input: #64748B;
  --color-border-subtle: #E2E8F0;
  --color-border-mint: #99F6E4;
  --color-focus-ring: #0F766E;

  --color-status-success: #15803D;
  --color-status-success-bg: #F0FDF4;
  --color-status-warning: #B45309;
  --color-status-warning-bg: #FFFBEB;
  --color-status-danger: #B91C1C;
  --color-status-danger-bg: #FEF2F2;

  --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family-base);
  background-color: var(--color-bg-canvas);
  color: var(--color-text-primary);
  line-height: 1.5;
  min-height: 100vh;
  padding: 1.5rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container {
  width: 100%;
  max-width: 780px;
}

/* Header & Brand */
header {
  margin-bottom: 2rem;
  text-align: center;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-bg-mint-tint);
  border: 1px solid var(--color-border-mint);
  color: var(--color-teal-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.brand-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  line-height: 1.15;
  margin-bottom: 0.5rem;
}

.brand-title span.accent {
  color: var(--color-teal-primary);
}

.brand-tagline {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  font-weight: 400;
  max-width: 580px;
  margin: 0 auto;
}

/* Cards */
.card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

/* Status pills */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
}

.status-pill.success {
  background-color: var(--color-status-success-bg);
  color: var(--color-status-success);
}

.status-pill.warning {
  background-color: var(--color-status-warning-bg);
  color: var(--color-status-warning);
}

.status-pill.info {
  background-color: var(--color-sky-soft);
  color: var(--color-sky-primary);
}

/* Grid & Spec Rows */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.spec-list {
  list-style: none;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--color-border-subtle);
  font-size: 0.9375rem;
}

.spec-item:last-child {
  border-bottom: none;
}

.spec-label {
  color: var(--color-text-secondary);
}

.spec-value {
  font-weight: 600;
  color: var(--color-text-primary);
  font-family: var(--font-family-mono);
  font-size: 0.875rem;
}

/* Code block & JSON preview */
pre.code-preview {
  background-color: var(--color-bg-canvas);
  border: 1px solid var(--color-border-subtle);
  border-radius: 8px;
  padding: 1rem;
  font-family: var(--font-family-mono);
  font-size: 0.8125rem;
  color: var(--color-text-primary);
  overflow-x: auto;
  line-height: 1.45;
}

/* Buttons & Links */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  min-height: 44px;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background-color: var(--color-teal-primary);
  color: #FFFFFF;
  border: 1px solid var(--color-teal-primary);
}

.btn-primary:hover {
  background-color: var(--color-teal-hover);
}

.btn-secondary {
  background-color: var(--color-bg-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-input);
}

.btn-secondary:hover {
  background-color: var(--color-bg-canvas);
}

.btn:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

/* Callout */
.callout {
  padding: 1rem;
  border-radius: 8px;
  background-color: var(--color-bg-mint-tint);
  border-left: 4px solid var(--color-teal-primary);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 1rem;
}

.callout strong {
  color: var(--color-text-primary);
}

/* Footer */
footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}