/* ============================================================
   CloviTek UI Kit — components.css
   Clean-room component set. Requires tokens.css.
   WCAG AA contrast, responsive, accent-driven.
   ============================================================ */

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

body.ck {
  margin: 0;
  font-family: var(--ck-font-body);
  font-size: var(--ck-fs-sm);
  line-height: var(--ck-lh);
  color: var(--ck-soft-slate);
  background: var(--ck-canvas);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.ck h1, .ck h2, .ck h3, .ck h4 { color: var(--ck-ink); font-weight: var(--ck-fw-semibold); margin: 0 0 var(--ck-sp-3); line-height: 1.3; }
.ck h1 { font-size: var(--ck-fs-2xl); }
.ck h2 { font-size: var(--ck-fs-xl); }
.ck h3 { font-size: var(--ck-fs-lg); }
.ck a { color: var(--ck-accent); text-decoration: none; }
.ck a:hover { color: var(--ck-accent-hover); text-decoration: underline; }
.ck .ck-muted { color: var(--ck-muted); }
.ck :focus-visible { outline: 2px solid var(--ck-focus-ring); outline-offset: 2px; }

/* ---------- App shell ---------- */
.ck-app { display: flex; min-height: 100vh; }
.ck-sidebar {
  width: 232px; flex: 0 0 232px;
  background: var(--ck-surface);
  border-right: 1px solid var(--ck-border);
  display: flex; flex-direction: column;
  padding: var(--ck-sp-4) var(--ck-sp-3);
}
.ck-brand { display: flex; align-items: center; gap: var(--ck-sp-3); padding: var(--ck-sp-2) var(--ck-sp-2) var(--ck-sp-5); }
.ck-brand-glyph {
  width: 30px; height: 30px; border-radius: var(--ck-radius);
  background: var(--ck-accent); color: var(--ck-on-accent);
  display: grid; place-items: center; font-weight: var(--ck-fw-bold);
}
.ck-brand-name { color: var(--ck-ink); font-weight: var(--ck-fw-semibold); font-size: var(--ck-fs-md); }
.ck-nav { display: flex; flex-direction: column; gap: 2px; }
.ck-nav-label { color: var(--ck-muted); font-size: var(--ck-fs-xs); text-transform: uppercase; letter-spacing: .04em; padding: var(--ck-sp-4) var(--ck-sp-2) var(--ck-sp-1); }
.ck-nav-item {
  display: flex; align-items: center; gap: var(--ck-sp-3);
  padding: var(--ck-sp-2) var(--ck-sp-3); border-radius: var(--ck-radius);
  color: var(--ck-soft-slate); cursor: pointer; font-weight: var(--ck-fw-medium);
}
.ck-nav-item:hover { background: var(--ck-hover); color: var(--ck-ink); text-decoration: none; }
.ck-nav-item.is-active { background: var(--ck-accent-soft); color: var(--ck-accent); }
.ck-nav-item .ck-ico { width: 16px; height: 16px; opacity: .9; }

.ck-main { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }
.ck-topbar {
  height: 56px; display: flex; align-items: center; gap: var(--ck-sp-4);
  padding: 0 var(--ck-sp-6); background: var(--ck-surface);
  border-bottom: 1px solid var(--ck-border);
}
.ck-topbar .ck-spacer { flex: 1 1 auto; }
.ck-search {
  height: 34px; min-width: 220px; padding: 0 var(--ck-sp-3);
  border: 1px solid var(--ck-border); border-radius: var(--ck-radius);
  background: var(--ck-canvas); color: var(--ck-ink); font-size: var(--ck-fs-sm);
}
.ck-content { padding: var(--ck-sp-6); flex: 1 1 auto; }

/* ---------- Cards ---------- */
.ck-card {
  background: var(--ck-card); border: 1px solid var(--ck-border);
  border-radius: var(--ck-radius-lg); box-shadow: var(--ck-shadow-xs);
  padding: var(--ck-sp-5);
}
.ck-card-head { display: flex; align-items: center; gap: var(--ck-sp-3); margin-bottom: var(--ck-sp-4); }
.ck-card-head h3 { margin: 0; }

/* Stat cards */
.ck-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--ck-sp-4); }
.ck-stat { background: var(--ck-card); border: 1px solid var(--ck-border); border-radius: var(--ck-radius-lg); padding: var(--ck-sp-5); box-shadow: var(--ck-shadow-xs); }
.ck-stat-label { color: var(--ck-muted); font-size: var(--ck-fs-xs); text-transform: uppercase; letter-spacing: .04em; }
.ck-stat-value { color: var(--ck-ink); font-size: var(--ck-fs-2xl); font-weight: var(--ck-fw-bold); margin-top: var(--ck-sp-1); }
.ck-stat-trend { font-size: var(--ck-fs-sm); margin-top: var(--ck-sp-1); }
.ck-stat-trend.up { color: var(--ck-success); }
.ck-stat-trend.down { color: var(--ck-danger); }

/* ---------- Buttons ---------- */
.ck-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--ck-sp-2);
  height: 36px; padding: 0 var(--ck-sp-4); border-radius: var(--ck-radius);
  font-family: inherit; font-size: var(--ck-fs-sm); font-weight: var(--ck-fw-medium);
  border: 1px solid transparent; cursor: pointer; transition: background .12s, border-color .12s, color .12s;
  white-space: nowrap;
}
.ck-btn-primary { background: var(--ck-accent); color: var(--ck-on-accent); }
.ck-btn-primary:hover { background: var(--ck-accent-hover); }
.ck-btn-secondary { background: var(--ck-card); color: var(--ck-ink); border-color: var(--ck-border-strong); }
.ck-btn-secondary:hover { background: var(--ck-hover); border-color: var(--ck-accent); }
.ck-btn-ghost { background: transparent; color: var(--ck-soft-slate); }
.ck-btn-ghost:hover { background: var(--ck-hover); color: var(--ck-ink); }
.ck-btn-danger { background: var(--ck-danger); color: #fff; }
.ck-btn-sm { height: 28px; padding: 0 var(--ck-sp-3); font-size: var(--ck-fs-xs); }
.ck-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- Status pills (data-driven via --pill-c / --pill-rgb) ---------- */
.ck-pill {
  display: inline-flex; align-items: center; gap: 6px;
  height: 22px; padding: 0 10px; border-radius: var(--ck-radius-pill);
  font-size: var(--ck-fs-xs); font-weight: var(--ck-fw-semibold);
  color: var(--pill-c, var(--ck-soft-slate));
  background: rgba(var(--pill-rgb, 138,150,163), 0.13);
}
.ck-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--pill-c, currentColor); }
.ck-pill.success { --pill-c: var(--ck-success); --pill-rgb: var(--ck-success-rgb); }
.ck-pill.warn    { --pill-c: var(--ck-warn);    --pill-rgb: var(--ck-warn-rgb); }
.ck-pill.danger  { --pill-c: var(--ck-danger);  --pill-rgb: var(--ck-danger-rgb); }
.ck-pill.info    { --pill-c: var(--ck-info);    --pill-rgb: var(--ck-info-rgb); }
.ck-pill.accent  { --pill-c: var(--ck-accent);  --pill-rgb: var(--ck-accent-rgb); }

/* ---------- Badges ---------- */
.ck-badge { display: inline-block; min-width: 18px; padding: 1px 6px; text-align: center; border-radius: var(--ck-radius-pill); font-size: var(--ck-fs-xs); font-weight: var(--ck-fw-semibold); background: var(--ck-accent); color: var(--ck-on-accent); }
.ck-badge.muted { background: var(--ck-border-strong); color: var(--ck-soft-slate); }

/* ---------- Avatar ---------- */
.ck-avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--ck-accent-soft); color: var(--ck-accent); display: inline-grid; place-items: center; font-size: var(--ck-fs-xs); font-weight: var(--ck-fw-semibold); }
.ck-avatar-group { display: inline-flex; }
.ck-avatar-group .ck-avatar { margin-left: -8px; border: 2px solid var(--ck-card); }
.ck-avatar-group .ck-avatar:first-child { margin-left: 0; }

/* ---------- Data table ---------- */
.ck-table-wrap { background: var(--ck-card); border: 1px solid var(--ck-border); border-radius: var(--ck-radius-lg); overflow: hidden; box-shadow: var(--ck-shadow-xs); }
.ck-table { width: 100%; border-collapse: collapse; font-size: var(--ck-fs-sm); }
.ck-table thead th {
  text-align: left; padding: var(--ck-sp-3) var(--ck-sp-4);
  color: var(--ck-muted); font-weight: var(--ck-fw-semibold);
  font-size: var(--ck-fs-xs); text-transform: uppercase; letter-spacing: .03em;
  border-bottom: 1px solid var(--ck-border); background: var(--ck-card-2); user-select: none;
}
.ck-table thead th.sortable { cursor: pointer; }
.ck-table thead th.sortable::after { content: "\2195"; opacity: .4; margin-left: 6px; }
.ck-table tbody td { padding: var(--ck-sp-3) var(--ck-sp-4); border-bottom: 1px solid var(--ck-border); color: var(--ck-soft-slate); }
.ck-table tbody tr:last-child td { border-bottom: none; }
.ck-table tbody tr:hover { background: var(--ck-hover); }
.ck-table .ck-cell-strong { color: var(--ck-ink); font-weight: var(--ck-fw-medium); }

/* ---------- List items ---------- */
.ck-list { display: flex; flex-direction: column; background: var(--ck-card); border: 1px solid var(--ck-border); border-radius: var(--ck-radius-lg); overflow: hidden; }
.ck-list-item { display: flex; align-items: center; gap: var(--ck-sp-3); padding: var(--ck-sp-3) var(--ck-sp-4); border-bottom: 1px solid var(--ck-border); }
.ck-list-item:last-child { border-bottom: none; }
.ck-list-item:hover { background: var(--ck-hover); }
.ck-list-item .ck-li-body { flex: 1 1 auto; min-width: 0; }
.ck-list-item .ck-li-title { color: var(--ck-ink); font-weight: var(--ck-fw-medium); }
.ck-list-item .ck-li-sub { color: var(--ck-muted); font-size: var(--ck-fs-xs); }

/* ---------- Tabs ---------- */
.ck-tabs { display: flex; gap: var(--ck-sp-1); border-bottom: 1px solid var(--ck-border); margin-bottom: var(--ck-sp-5); }
.ck-tab { padding: var(--ck-sp-3) var(--ck-sp-4); cursor: pointer; color: var(--ck-muted); font-weight: var(--ck-fw-medium); border-bottom: 2px solid transparent; margin-bottom: -1px; background: none; border-top: none; border-left: none; border-right: none; font-family: inherit; font-size: var(--ck-fs-sm); }
.ck-tab:hover { color: var(--ck-ink); }
.ck-tab.is-active { color: var(--ck-accent); border-bottom-color: var(--ck-accent); }
.ck-tabpanel { display: none; }
.ck-tabpanel.is-active { display: block; }

/* ---------- Form controls ---------- */
.ck-field { display: flex; flex-direction: column; gap: var(--ck-sp-2); margin-bottom: var(--ck-sp-4); }
.ck-label { color: var(--ck-ink); font-size: var(--ck-fs-sm); font-weight: var(--ck-fw-medium); }
.ck-input, .ck-select, .ck-textarea {
  width: 100%; min-height: 38px; padding: var(--ck-sp-2) var(--ck-sp-3);
  border: 1px solid var(--ck-border-strong); border-radius: var(--ck-radius);
  background: var(--ck-card); color: var(--ck-ink); font-family: inherit; font-size: var(--ck-fs-sm);
}
.ck-textarea { min-height: 90px; resize: vertical; }
.ck-input:focus, .ck-select:focus, .ck-textarea:focus { outline: none; border-color: var(--ck-accent); box-shadow: 0 0 0 3px var(--ck-focus-ring); }
.ck-input::placeholder, .ck-textarea::placeholder { color: var(--ck-muted); }

/* ---------- Icon field: INPUT-GROUP pattern (canonical) ----------
   Form fields with an icon MUST use this structure. Border/background/radius
   live on the flex WRAPPER (.ck-input-group); the icon (.ck-ico, flex:none)
   and the control (flex:1) are flush flex SIBLINGS. The focus ring goes on the
   wrapper via :focus-within. NEVER absolutely-position an icon over a padded
   input — that drifts out of alignment when padding/font-size/border change. */
.ck-input-group {
  display: flex; align-items: center; gap: var(--ck-sp-2);
  width: 100%; min-height: 38px; padding: 0 var(--ck-sp-3);
  border: 1px solid var(--ck-border-strong); border-radius: var(--ck-radius);
  background: var(--ck-card); box-sizing: border-box;
  transition: border-color .15s, box-shadow .15s;
}
.ck-input-group:focus-within { border-color: var(--ck-accent); box-shadow: 0 0 0 3px var(--ck-focus-ring); }
.ck-input-group.is-textarea { align-items: stretch; }
.ck-input-group .ck-ico { flex: none; display: flex; align-items: center; color: var(--ck-muted); line-height: 1; }
.ck-input-group > .ck-input,
.ck-input-group > .ck-select,
.ck-input-group > .ck-textarea {
  flex: 1 1 auto; min-width: 0; min-height: 0;
  border: none; background: transparent; outline: none; box-shadow: none;
  padding: var(--ck-sp-2) 0;
}
.ck-input-group > .ck-input:focus,
.ck-input-group > .ck-select:focus,
.ck-input-group > .ck-textarea:focus { box-shadow: none; }

.ck-check { display: inline-flex; align-items: center; gap: var(--ck-sp-2); cursor: pointer; }
.ck-check input { width: 16px; height: 16px; accent-color: var(--ck-accent); }

/* Toggle */
.ck-toggle { position: relative; display: inline-block; width: 38px; height: 22px; }
.ck-toggle input { opacity: 0; width: 0; height: 0; }
.ck-toggle .ck-slider { position: absolute; inset: 0; background: var(--ck-border-strong); border-radius: var(--ck-radius-pill); transition: .15s; }
.ck-toggle .ck-slider::before { content: ""; position: absolute; height: 16px; width: 16px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: .15s; box-shadow: var(--ck-shadow-sm); }
.ck-toggle input:checked + .ck-slider { background: var(--ck-accent); }
.ck-toggle input:checked + .ck-slider::before { transform: translateX(16px); }

/* ---------- Kanban ---------- */
.ck-kanban { display: flex; gap: var(--ck-sp-4); overflow-x: auto; padding-bottom: var(--ck-sp-2); }
.ck-kan-col { flex: 0 0 280px; background: var(--ck-canvas); border: 1px solid var(--ck-border); border-radius: var(--ck-radius-lg); display: flex; flex-direction: column; max-height: 560px; }
[data-theme="dark"] .ck-kan-col { background: var(--ck-card-2); }
.ck-kan-head { display: flex; align-items: center; gap: var(--ck-sp-2); padding: var(--ck-sp-3) var(--ck-sp-4); border-bottom: 1px solid var(--ck-border); font-weight: var(--ck-fw-semibold); color: var(--ck-ink); }
.ck-kan-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--col-c, var(--ck-accent)); }
.ck-kan-count { margin-left: auto; }
.ck-kan-body { padding: var(--ck-sp-3); display: flex; flex-direction: column; gap: var(--ck-sp-3); overflow-y: auto; min-height: 40px; }
.ck-kan-card { background: var(--ck-card); border: 1px solid var(--ck-border); border-left: 3px solid var(--col-c, var(--ck-accent)); border-radius: var(--ck-radius); padding: var(--ck-sp-3); box-shadow: var(--ck-shadow-xs); cursor: grab; }
.ck-kan-card:hover { box-shadow: var(--ck-shadow-sm); }
.ck-kan-card .ck-kc-title { color: var(--ck-ink); font-weight: var(--ck-fw-medium); margin-bottom: var(--ck-sp-2); }
.ck-kan-card .ck-kc-meta { display: flex; align-items: center; gap: var(--ck-sp-2); }
.sortable-ghost { opacity: .4; }

/* ---------- Modal / Drawer ---------- */
.ck-overlay { position: fixed; inset: 0; background: var(--ck-overlay); display: none; align-items: center; justify-content: center; z-index: 1000; padding: var(--ck-sp-4); }
.ck-overlay.is-open { display: flex; }
.ck-modal { width: 100%; max-width: 480px; background: var(--ck-card); border: 1px solid var(--ck-border); border-radius: var(--ck-radius-lg); box-shadow: var(--ck-shadow-lg); overflow: hidden; }
.ck-modal-head { display: flex; align-items: center; padding: var(--ck-sp-4) var(--ck-sp-5); border-bottom: 1px solid var(--ck-border); }
.ck-modal-head h3 { margin: 0; }
.ck-modal-close { margin-left: auto; background: none; border: none; font-size: 20px; line-height: 1; color: var(--ck-muted); cursor: pointer; }
.ck-modal-body { padding: var(--ck-sp-5); }
.ck-modal-foot { display: flex; justify-content: flex-end; gap: var(--ck-sp-3); padding: var(--ck-sp-4) var(--ck-sp-5); border-top: 1px solid var(--ck-border); }

/* Drawer variant */
.ck-overlay.drawer { align-items: stretch; justify-content: flex-end; padding: 0; }
.ck-overlay.drawer .ck-modal { max-width: 420px; height: 100%; border-radius: 0; }

/* ---------- Empty state ---------- */
.ck-empty { text-align: center; padding: var(--ck-sp-10) var(--ck-sp-5); color: var(--ck-muted); }
.ck-empty .ck-empty-icon { width: 48px; height: 48px; border-radius: 50%; background: var(--ck-accent-soft); color: var(--ck-accent); display: inline-grid; place-items: center; font-size: 22px; margin-bottom: var(--ck-sp-3); }
.ck-empty h3 { color: var(--ck-ink); }

/* ---------- Utilities ---------- */
.ck-row { display: flex; align-items: center; gap: var(--ck-sp-3); }
.ck-row.wrap { flex-wrap: wrap; }
.ck-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--ck-sp-6); }
.ck-mt-6 { margin-top: var(--ck-sp-6); }
.ck-section-title { color: var(--ck-ink); font-size: var(--ck-fs-lg); font-weight: var(--ck-fw-semibold); margin: 0 0 var(--ck-sp-4); }

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .ck-sidebar { display: none; }
  .ck-grid-2 { grid-template-columns: 1fr; }
}