/**
 * Civic Clarity v5 — Dieter Rams × Braun design system
 * Character Developer · instrument-panel clarity
 */

/* ── Fonts ─────────────────────────────────────────────────────────────── */
@import url("https://api.fontshare.com/v2/css?f[]=satoshi@500,600,700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap");

/* ── Design tokens ───────────────────────────────────────────────────────── */
:root {
  /* Colors */
  --cd-orange: #e38b42;
  --cd-orange-hi: #f0a14d;
  --cd-orange-lo: #b8682c;
  --cd-seafoam-hi: #eaefe1;
  --cd-seafoam-lo: #dde3d4;
  --cd-alum-hi: #c7c9c0;
  --cd-alum-lo: #b9bbb2;
  --cd-text: #2f2f2c;
  --cd-muted: #6a6a60;
  --cd-ok: #3baa6b;
  --cd-warn: #c47b2e;
  --cd-err: #c5524a;
  --cd-info: #4f7baf;

  /* Spacing */
  --cd-space-xs: 4px;
  --cd-space-sm: 8px;
  --cd-space-md: 12px;
  --cd-space-base: 16px;
  --cd-space-lg: 24px;
  --cd-space-xl: 32px;

  /* Radius */
  --cd-radius-xs: 4px;
  --cd-radius-sm: 8px;
  --cd-radius-md: 12px;
  --cd-radius-lg: 16px;
  --cd-radius-pill: 9999px;

  /* Motion */
  --cd-duration-atom: 120ms;
  --cd-duration-molecule: 240ms;
  --cd-duration-organism: 360ms;
  --cd-duration-modal: 420ms;
  --cd-ease-fast: cubic-bezier(0.25, 1, 0.5, 1);
  --cd-ease-soft: cubic-bezier(0.2, 0.8, 0.3, 1);

  /* Materials */
  --cd-material-seafoam: linear-gradient(180deg, #e4e2c9 0%, #dbd9bb 100%);
  --cd-material-aluminum: linear-gradient(180deg, #b6b4aa 0%, #a9a698 48%, #c0beb3 100%);
  --cd-material-orange: var(--cd-orange);
  --cd-material-glass: linear-gradient(180deg, rgba(255, 255, 255, 0.45), rgba(255, 255, 255, 0.05));
  --cd-frame-aluminum: repeating-linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.08) 0,
    rgba(255, 255, 255, 0.08) 1px,
    transparent 1px,
    transparent 3px
  );

  /* Elevation */
  --cd-shadow-l0: 0 1px 2px rgba(47, 47, 44, 0.04);
  --cd-shadow-l1: inset 0 1px 0 rgba(255, 255, 255, 0.6), 0 2px 8px rgba(47, 47, 44, 0.06);
  --cd-shadow-l2: inset 0 1px 0 rgba(255, 255, 255, 0.5), 0 4px 12px rgba(47, 47, 44, 0.1);
  --cd-shadow-l3: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 8px 32px rgba(47, 47, 44, 0.16);
  --cd-shadow-focus: 0 0 0 2px var(--cd-orange), 0 0 0 6px rgba(227, 139, 66, 0.18);
  --cd-shadow-soft: var(--cd-shadow-l1);
  --cd-shadow-hard: var(--cd-shadow-l3);

  /* Grid */
  --cd-grid-base: 12px;
  --cd-grid-padding: 16px;

  color-scheme: light;
}

@media (min-width: 768px) {
  :root {
    --cd-grid-base: 16px;
    --cd-grid-padding: 24px;
  }
}

@media (min-width: 1024px) {
  :root {
    --cd-grid-base: 24px;
    --cd-grid-padding: 32px;
  }
}

/* ── Base shell ──────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

.font-display {
  font-family: Satoshi, Inter, system-ui, sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.font-body {
  font-family: Inter, "IBM Plex Sans", system-ui, sans-serif;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.cd-body {
  margin: 0;
  min-height: 100vh;
  background: var(--cd-seafoam-lo);
  color: var(--cd-text);
  font-family: Inter, "IBM Plex Sans", system-ui, sans-serif;
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

/* ── Civic lattice grid ──────────────────────────────────────────────────── */
.cd-content-grid {
  position: relative;
  isolation: isolate;
}

.cd-content-grid::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: 0.35;
  background-image:
  linear-gradient(to right, rgba(47, 47, 44, 0.06) 1px, transparent 1px),
  linear-gradient(to bottom, rgba(47, 47, 44, 0.06) 1px, transparent 1px);
  background-size: var(--cd-grid-base) var(--cd-grid-base);
}

.cd-grid-animate.cd-content-grid::before {
  animation: cd-grid-pulse var(--cd-duration-organism) var(--cd-ease-soft) infinite alternate;
}

@keyframes cd-grid-pulse {
  from { opacity: 0.25; }
  to { opacity: 0.4; }
}

@media (prefers-reduced-motion: reduce) {
  .cd-grid-animate.cd-content-grid::before {
    animation: none;
  }
}

.cd-grid {
  display: grid;
  gap: var(--cd-grid-base);
  padding: var(--cd-grid-padding);
}

.cd-grid-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: var(--cd-space-base);
}

/* ── Materials ───────────────────────────────────────────────────────────── */
.cd-frame {
  background: var(--cd-material-aluminum), var(--cd-frame-aluminum);
  background-blend-mode: overlay, normal;
  border: 1px solid var(--cd-alum-lo);
  border-radius: var(--cd-radius-md);
  box-shadow: var(--cd-shadow-l1);
}

.cd-surface {
  position: relative;
  background: var(--cd-material-seafoam);
  border: 1px solid var(--cd-alum-hi);
  border-radius: var(--cd-radius-md);
  box-shadow: var(--cd-shadow-l1);
  overflow: hidden;
}

.cd-surface::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 255, 255, 0.35), transparent 60%);
}

/* ── Components ──────────────────────────────────────────────────────────── */
.cd-card {
  position: relative;
  background: var(--cd-material-seafoam);
  border: 1px solid var(--cd-alum-hi);
  border-radius: var(--cd-radius-md);
  box-shadow: var(--cd-shadow-l1);
  padding: var(--cd-space-lg);
  overflow: hidden;
}

.cd-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 255, 255, 0.3), transparent 55%);
}

.cd-card > * {
  position: relative;
  z-index: 1;
}

.cd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--cd-space-sm);
  min-height: 44px;
  min-width: 44px;
  padding: var(--cd-space-sm) var(--cd-space-base);
  border: 1px solid var(--cd-alum-lo);
  border-radius: var(--cd-radius-sm);
  background: var(--cd-seafoam-hi);
  color: var(--cd-text);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--cd-shadow-l2);
  transition:
    transform var(--cd-duration-atom) var(--cd-ease-fast),
    box-shadow var(--cd-duration-atom) var(--cd-ease-fast),
    border-color var(--cd-duration-atom) var(--cd-ease-fast);
}

.cd-btn:hover {
  border-color: var(--cd-alum-hi);
  box-shadow: var(--cd-shadow-l2), 0 0 0 1px rgba(47, 47, 44, 0.04);
}

.cd-btn:active {
  transform: translateY(1px) scale(0.99);
}

.cd-btn:focus-visible {
  outline: none;
  box-shadow: var(--cd-shadow-focus);
}

.cd-btn--primary {
  background: var(--cd-material-orange);
  border-color: var(--cd-orange-lo);
  color: #fff;
  box-shadow: none;
}

.cd-btn--primary:hover {
  background: var(--cd-orange-lo);
  border-color: var(--cd-orange-lo);
  box-shadow: none;
}

.cd-btn--primary:focus-visible {
  box-shadow: var(--cd-shadow-focus);
}

.cd-btn--ghost {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.cd-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.35);
  box-shadow: none;
}

.cd-btn--outline {
  background: transparent;
  border-color: var(--cd-alum-hi);
}

.cd-input {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: var(--cd-space-sm) var(--cd-space-base);
  border: 1px solid var(--cd-alum-hi);
  border-radius: var(--cd-radius-sm);
  background: rgba(255, 255, 255, 0.5);
  color: var(--cd-text);
  font-family: inherit;
  font-size: 1rem;
  box-shadow: inset 0 2px 4px rgba(47, 47, 44, 0.06);
  transition: box-shadow var(--cd-duration-atom) var(--cd-ease-fast);
}

.cd-input:focus-visible {
  outline: none;
  box-shadow: var(--cd-shadow-focus), inset 0 2px 4px rgba(47, 47, 44, 0.06);
}

.cd-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--cd-muted);
  margin-bottom: var(--cd-space-xs);
}

.cd-field {
  display: flex;
  flex-direction: column;
  gap: var(--cd-space-xs);
}

.cd-field--actions .cd-btn {
  width: 100%;
}

.cd-table-wrap {
  overflow-x: auto;
  margin-top: var(--cd-space-base);
  border: 1px solid var(--cd-alum-hi);
  border-radius: var(--cd-radius-sm);
  background: rgba(255, 255, 255, 0.35);
}

.cd-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.cd-table th,
.cd-table td {
  padding: var(--cd-space-sm) var(--cd-space-base);
  text-align: left;
  border-bottom: 1px solid var(--cd-alum-hi);
}

.cd-table th {
  font-weight: 600;
  color: var(--cd-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cd-table tr:last-child td {
  border-bottom: none;
}

.cd-table code {
  font-size: 0.8125em;
}

.cd-form-grid {
  display: grid;
  gap: var(--cd-space-base);
}

@media (min-width: 640px) {
  .cd-form-grid--2 {
    grid-template-columns: 1fr 1fr;
  }
}

.cd-divider {
  margin: var(--cd-space-xl) 0 var(--cd-space-lg);
  border: 0;
  border-top: 1px solid var(--cd-alum-hi);
}

.cd-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--cd-space-xs);
  padding: var(--cd-space-xs) var(--cd-space-md);
  border-radius: var(--cd-radius-pill);
  border: 1px solid var(--cd-alum-hi);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.1));
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--cd-muted);
}

.cd-pill--signal {
  border-color: var(--cd-orange-lo);
  color: var(--cd-orange-lo);
  background: linear-gradient(180deg, rgba(255, 224, 179, 0.4), rgba(227, 139, 66, 0.08));
}

.cd-modal {
  background: var(--cd-material-glass);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--cd-radius-lg);
  box-shadow: var(--cd-shadow-l3);
  padding: var(--cd-space-xl);
}

/* ── Typography utilities ────────────────────────────────────────────────── */
.cd-heading-xl {
  font-family: Satoshi, Inter, system-ui, sans-serif;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 var(--cd-space-sm);
  color: var(--cd-text);
}

.cd-heading-lg {
  font-family: Satoshi, Inter, system-ui, sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 var(--cd-space-sm);
}

.cd-lead {
  margin: 0 0 var(--cd-space-lg);
  color: var(--cd-muted);
  font-size: 1rem;
  max-width: 42rem;
}

.cd-caption {
  font-size: 0.8125rem;
  color: var(--cd-muted);
}

.cd-meta {
  margin-top: var(--cd-space-xl);
  padding-top: var(--cd-space-lg);
  border-top: 1px solid var(--cd-alum-hi);
  font-size: 0.8125rem;
  color: var(--cd-muted);
}

/* ── Link list pattern ───────────────────────────────────────────────────── */
.cd-link-list {
  list-style: none;
  padding: 0;
  margin: var(--cd-space-lg) 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--cd-space-sm);
}

.cd-link-list a {
  display: flex;
  align-items: center;
  gap: var(--cd-space-sm);
  padding: var(--cd-space-sm) var(--cd-space-base);
  border-radius: var(--cd-radius-sm);
  color: var(--cd-text);
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    background var(--cd-duration-atom) var(--cd-ease-fast),
    border-color var(--cd-duration-atom) var(--cd-ease-fast);
}

.cd-link-list a:hover {
  background: rgba(255, 255, 255, 0.35);
  border-color: var(--cd-alum-hi);
}

.cd-link-list a:focus-visible {
  outline: none;
  box-shadow: var(--cd-shadow-focus);
}

.cd-link-list code {
  font-size: 0.875em;
  color: var(--cd-orange-lo);
  background: rgba(255, 255, 255, 0.4);
  padding: 0.1em 0.35em;
  border-radius: var(--cd-radius-xs);
}

/* ── Layout helpers ──────────────────────────────────────────────────────── */
.cd-shell {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: var(--cd-grid-padding);
}

.cd-panel {
  width: 100%;
  max-width: 42rem;
}

.cd-panel--wide {
  max-width: 56rem;
}

.cd-stack {
  display: flex;
  flex-direction: column;
  gap: var(--cd-space-base);
}

.cd-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cd-space-sm);
  align-items: center;
}

/* ── Swatches (brand guide) ────────────────────────────────────────────────── */
.cd-swatch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr));
  gap: var(--cd-space-base);
}

.cd-swatch {
  border-radius: var(--cd-radius-sm);
  overflow: hidden;
  border: 1px solid var(--cd-alum-hi);
  box-shadow: var(--cd-shadow-l1);
}

.cd-swatch__chip {
  height: 4rem;
}

.cd-swatch__label {
  padding: var(--cd-space-sm);
  font-size: 0.75rem;
  background: var(--cd-seafoam-hi);
  color: var(--cd-muted);
}

.cd-swatch__label strong {
  display: block;
  color: var(--cd-text);
  font-weight: 500;
}

/* ── Semantic status ─────────────────────────────────────────────────────── */
.cd-status--ok { color: var(--cd-ok); }
.cd-status--warn { color: var(--cd-warn); }
.cd-status--err { color: var(--cd-err); }
.cd-status--info { color: var(--cd-info); }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}