/* ============================================================
   Design System Page — internal style guide
   Reachable via #design-system (footer link only, not in main nav)
   Documents tokens, components, patterns for theme.json export
   ============================================================ */

.kd-ds {
  padding: 32px 0 96px;
  --kd-ds-side: 240px;
}

/* ---------- Page header ---------- */
.kd-ds__head {
  padding: 32px 0 28px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--c-border);
}
.kd-ds__head h1 {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 8px 0 12px;
  color: var(--c-text-strong);
}
.kd-ds__lead {
  font-size: 1.1rem;
  color: var(--c-text-soft);
  max-width: 70ch;
  line-height: 1.55;
  margin: 0 0 16px;
}
.kd-ds__meta {
  display: flex; gap: 14px; flex-wrap: wrap;
  font-size: 0.82rem; color: var(--c-text-muted);
  font-family: ui-monospace, "SFMono-Regular", monospace;
}
.kd-ds__meta span {
  background: var(--c-bg-muted);
  padding: 4px 10px;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-border);
}

/* ---------- 2-col layout: TOC + content ---------- */
.kd-ds__layout {
  display: grid;
  grid-template-columns: var(--kd-ds-side) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}
@media (max-width: 920px) {
  .kd-ds__layout { grid-template-columns: 1fr; gap: 24px; }
  .kd-ds__toc { position: static !important; }
}

.kd-ds__toc {
  position: sticky;
  top: 24px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  padding: 18px 0;
  font-size: 0.92rem;
}
.kd-ds__toc h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  margin: 0 0 10px;
  font-weight: 700;
}
.kd-ds__toc ul {
  list-style: none; padding: 0; margin: 0 0 18px;
  display: flex; flex-direction: column; gap: 2px;
}
.kd-ds__toc a {
  display: block;
  padding: 6px 12px;
  color: var(--c-text-soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-weight: 500;
  transition: all var(--t-fast) var(--ease);
}
.kd-ds__toc a:hover {
  color: var(--c-primary-700);
  background: var(--c-primary-50);
  border-left-color: var(--c-primary-300);
}
.kd-ds__toc a.is-active {
  color: var(--c-primary-700);
  background: var(--c-primary-50);
  border-left-color: var(--c-primary-700);
  font-weight: 700;
}

/* ---------- Sections ---------- */
.kd-ds__section {
  margin-bottom: 72px;
  scroll-margin-top: 24px;
}
.kd-ds__section h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  color: var(--c-text-strong);
  display: flex; align-items: center; gap: 14px;
}
.kd-ds__section h2 .kd-ds__num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-primary-700);
  background: var(--c-primary-50);
  border: 1px solid var(--c-primary-100);
  border-radius: var(--r-pill);
  padding: 2px 12px;
  font-family: ui-monospace, monospace;
  letter-spacing: 0;
}
.kd-ds__intro {
  font-size: 1rem;
  color: var(--c-text-soft);
  max-width: 68ch;
  line-height: 1.6;
  margin: 0 0 28px;
}
.kd-ds__sub {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-text-strong);
  margin: 36px 0 14px;
  display: flex; align-items: baseline; gap: 12px;
}
.kd-ds__sub small {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--c-text-muted);
  font-family: ui-monospace, monospace;
}

/* ---------- Color tokens ---------- */
.kd-ds-colorscale {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}
.kd-ds-swatch {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--c-bg);
  transition: transform var(--t-fast) var(--ease);
}
.kd-ds-swatch:hover { transform: translateY(-2px); box-shadow: var(--sh-2); }
.kd-ds-swatch__color {
  height: 90px;
  display: flex;
  align-items: flex-end;
  padding: 10px;
  position: relative;
}
.kd-ds-swatch__step {
  font-size: 0.78rem;
  font-weight: 700;
  font-family: ui-monospace, monospace;
  background: rgba(255,255,255,0.85);
  color: #0F172A;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}
.kd-ds-swatch__color.dark .kd-ds-swatch__step {
  background: rgba(15,23,42,0.85); color: #fff;
}
.kd-ds-swatch__body {
  padding: 10px 12px;
  font-size: 0.78rem;
  font-family: ui-monospace, monospace;
  border-top: 1px solid var(--c-border);
  background: var(--c-bg-muted);
}
.kd-ds-swatch__hex {
  font-weight: 700; color: var(--c-text-strong);
  display: block;
}
.kd-ds-swatch__rgb {
  color: var(--c-text-muted);
  display: block;
  font-size: 0.72rem;
  margin-top: 2px;
}
.kd-ds-swatch__var {
  display: block;
  margin-top: 4px;
  color: var(--c-primary-700);
  font-size: 0.7rem;
  font-weight: 600;
  word-break: break-all;
}
.kd-ds-swatch__contrast {
  display: flex; gap: 4px; margin-top: 6px;
  font-size: 0.68rem;
}
.kd-ds-swatch__cbadge {
  flex: 1;
  text-align: center;
  padding: 3px 4px;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-family: ui-monospace, monospace;
}
.kd-ds-swatch__cbadge.cb--white { background: #fff; border: 1px solid var(--c-border); color: #0F172A; }
.kd-ds-swatch__cbadge.cb--black { background: #0F172A; color: #fff; }
.kd-ds-swatch__cbadge .cb-rating {
  display: block; font-size: 0.6rem; margin-top: 1px; opacity: 0.7;
}
.kd-ds-swatch__cbadge.is-fail { opacity: 0.55; }

/* Status colors as horizontal cards */
.kd-ds-statusgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.kd-ds-status {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 14px 16px;
  display: flex; gap: 12px; align-items: center;
}
.kd-ds-status__chip {
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  flex-shrink: 0;
}
.kd-ds-status__body { min-width: 0; }
.kd-ds-status__name { font-weight: 700; color: var(--c-text-strong); margin: 0; }
.kd-ds-status__hex {
  font-family: ui-monospace, monospace;
  font-size: 0.78rem;
  color: var(--c-text-muted);
  margin: 2px 0 0;
}
.kd-ds-status__var {
  font-family: ui-monospace, monospace;
  font-size: 0.7rem;
  color: var(--c-primary-700);
  margin: 0;
  word-break: break-all;
}

/* ---------- Typography scale ---------- */
.kd-ds-type {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) 220px;
  gap: 24px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-border);
}
.kd-ds-type:last-child { border-bottom: none; }
.kd-ds-type__label {
  font-family: ui-monospace, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--c-primary-700);
  background: var(--c-primary-50);
  padding: 4px 10px;
  border-radius: var(--r-sm);
  text-align: center;
  border: 1px solid var(--c-primary-100);
  align-self: start;
}
.kd-ds-type__sample {
  color: var(--c-text-strong);
  margin: 0;
  letter-spacing: -0.012em;
}
.kd-ds-type__meta {
  font-family: ui-monospace, monospace;
  font-size: 0.78rem;
  color: var(--c-text-muted);
  line-height: 1.5;
  text-align: right;
  align-self: start;
  padding-top: 4px;
}
.kd-ds-type__meta b { color: var(--c-text-strong); font-weight: 700; }
@media (max-width: 720px) {
  .kd-ds-type { grid-template-columns: 1fr; gap: 8px; }
  .kd-ds-type__label { width: max-content; }
  .kd-ds-type__meta { text-align: left; padding-top: 0; }
}

/* ---------- Spacing visualization ---------- */
.kd-ds-spacing {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.kd-ds-spacing li {
  display: grid;
  grid-template-columns: 80px 100px 1fr 220px;
  gap: 16px; align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--c-border);
}
.kd-ds-spacing li:last-child { border-bottom: none; }
.kd-ds-spacing__token {
  font-family: ui-monospace, monospace;
  font-size: 0.78rem; font-weight: 700;
  color: var(--c-primary-700);
}
.kd-ds-spacing__px {
  font-family: ui-monospace, monospace;
  font-size: 0.85rem;
  color: var(--c-text-strong);
  font-weight: 700;
}
.kd-ds-spacing__bar {
  height: 24px;
  background: var(--c-accent-500);
  border-radius: 2px;
}
.kd-ds-spacing__use {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  font-style: italic;
}
@media (max-width: 720px) {
  .kd-ds-spacing li { grid-template-columns: 70px 70px 1fr; gap: 10px; }
  .kd-ds-spacing__use { display: none; }
}

/* ---------- Radii + Shadows ---------- */
.kd-ds-radii, .kd-ds-shadows {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px;
}
.kd-ds-radii__item, .kd-ds-shadows__item {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 14px;
  text-align: center;
}
.kd-ds-radii__demo {
  width: 100%; height: 80px;
  background: linear-gradient(135deg, var(--c-primary-300), var(--c-primary-700));
  margin-bottom: 12px;
}
.kd-ds-shadows__demo {
  width: 100%; height: 80px;
  background: var(--c-bg);
  border-radius: var(--r-md);
  margin-bottom: 12px;
  border: 1px solid var(--c-border);
}
.kd-ds-radii__token, .kd-ds-shadows__token {
  font-family: ui-monospace, monospace;
  font-size: 0.78rem; font-weight: 700;
  color: var(--c-primary-700);
  display: block;
}
.kd-ds-radii__val, .kd-ds-shadows__val {
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
  color: var(--c-text-muted);
  margin-top: 2px;
}

/* ---------- Component inventory ---------- */
.kd-ds-comp {
  margin-bottom: 36px;
}
.kd-ds-comp__head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin: 0 0 12px;
  gap: 12px; flex-wrap: wrap;
}
.kd-ds-comp__head h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-text-strong);
  margin: 0;
}
.kd-ds-comp__id {
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
  color: var(--c-text-muted);
  background: var(--c-bg-muted);
  padding: 2px 8px;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-border);
}
.kd-ds-comp__demo {
  background: var(--c-bg-muted);
  background-image: linear-gradient(45deg, transparent 49%, var(--c-border) 49%, var(--c-border) 51%, transparent 51%);
  background-size: 12px 12px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 24px;
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
}
.kd-ds-comp__demo--col { flex-direction: column; align-items: stretch; }
.kd-ds-comp__demo--center { justify-content: center; }
.kd-ds-comp__notes {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--c-text-muted);
  font-style: italic;
}

/* Pill examples spacing */
.kd-ds-pillrow { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* Form mock */
.kd-ds-form {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  width: 100%; max-width: 560px;
}
.kd-ds-form label {
  display: flex; flex-direction: column; gap: 4px;
  font-size: 0.82rem; font-weight: 600;
  color: var(--c-text-soft);
  letter-spacing: 0.02em;
}
.kd-ds-form input, .kd-ds-form select, .kd-ds-form textarea {
  padding: 10px 12px;
  border: 1.5px solid var(--c-border-strong);
  border-radius: var(--r-sm);
  background: var(--c-bg);
  color: var(--c-text);
  font: inherit;
  font-size: 0.95rem;
  min-height: var(--hit);
}
.kd-ds-form input:focus, .kd-ds-form select:focus, .kd-ds-form textarea:focus {
  outline: none;
  border-color: var(--c-primary-500);
  box-shadow: 0 0 0 3px var(--c-primary-50);
}
.kd-ds-form textarea { min-height: 80px; resize: vertical; grid-column: 1/-1; }
.kd-ds-form .full { grid-column: 1/-1; }
.kd-ds-form .kd-checkrow { display: flex; align-items: center; gap: 8px; flex-direction: row; }

/* Table */
.kd-ds-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: hidden;
}
.kd-ds-table th, .kd-ds-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
}
.kd-ds-table th {
  background: var(--c-bg-muted);
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--c-text-muted);
}
.kd-ds-table tbody tr:last-child td { border-bottom: none; }
.kd-ds-table tbody tr:hover { background: var(--c-bg-muted); }

/* Pagination */
.kd-ds-pagination {
  display: flex; gap: 4px; align-items: center;
}
.kd-ds-pagination button, .kd-ds-pagination a {
  min-width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text);
  border-radius: var(--r-sm);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  padding: 0 10px;
}
.kd-ds-pagination button.is-current,
.kd-ds-pagination a.is-current {
  background: var(--c-primary-700);
  color: #fff;
  border-color: var(--c-primary-700);
}
.kd-ds-pagination button:hover:not(.is-current) {
  background: var(--c-primary-50);
  color: var(--c-primary-700);
  border-color: var(--c-primary-300);
}

/* Alerts */
.kd-ds-alert {
  display: flex; gap: 12px; padding: 14px 18px;
  border-radius: var(--r-md);
  border: 1px solid;
  align-items: flex-start;
  width: 100%;
}
.kd-ds-alert__icon {
  width: 24px; height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 0.85rem;
}
.kd-ds-alert--info { background: var(--c-info-bg); border-color: #93C5FD; color: var(--c-info); }
.kd-ds-alert--info .kd-ds-alert__icon { background: var(--c-info); }
.kd-ds-alert--success { background: var(--c-success-bg); border-color: #86EFAC; color: var(--c-success); }
.kd-ds-alert--success .kd-ds-alert__icon { background: var(--c-success); }
.kd-ds-alert--warning { background: var(--c-warning-bg); border-color: #FCD34D; color: var(--c-warning); }
.kd-ds-alert--warning .kd-ds-alert__icon { background: var(--c-warning); }
.kd-ds-alert--error { background: var(--c-error-bg); border-color: #FCA5A5; color: var(--c-error); }
.kd-ds-alert--error .kd-ds-alert__icon { background: var(--c-error); }
.kd-ds-alert b { color: inherit; }

/* Pattern doc cards */
.kd-ds-pattern {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 20px 24px;
  margin: 18px 0;
}
.kd-ds-pattern h4 {
  margin: 0 0 8px;
  font-size: 1rem; font-weight: 700;
  color: var(--c-text-strong);
}
.kd-ds-pattern p { margin: 0 0 10px; font-size: 0.92rem; color: var(--c-text-soft); line-height: 1.55; }
.kd-ds-pattern pre {
  background: #0F172A;
  color: #E2E8F0;
  padding: 14px 16px;
  border-radius: var(--r-sm);
  font-size: 0.78rem;
  font-family: ui-monospace, "SFMono-Regular", monospace;
  overflow-x: auto;
  margin: 10px 0 0;
  line-height: 1.5;
}
.kd-ds-pattern pre .tk-key { color: #93C5FD; }
.kd-ds-pattern pre .tk-str { color: #FCD34D; }
.kd-ds-pattern pre .tk-com { color: #64748B; font-style: italic; }