/* ─────────────────────────────────────────────────────────────────────────
 * Diverse CTI · Component Stylesheet
 * Reads from tokens.css. All classes are namespaced `dcti-*` so they can
 * sit alongside any other framework without collision.
 *
 * Usage:
 *   <html data-theme="light">
 *     <link rel="stylesheet" href="fonts.css">
 *     <link rel="stylesheet" href="tokens.css">
 *     <link rel="stylesheet" href="components.css">
 *
 * Components in this file:
 *   layout    .dcti-app, .dcti-sidebar, .dcti-topbar, .dcti-content
 *   text      .dcti-eyebrow, .dcti-mono
 *   button    .dcti-btn (+ --primary/--secondary/--ghost/--danger, --sm/--lg)
 *   form      .dcti-input, .dcti-select, .dcti-search, .dcti-toggle, .dcti-check
 *   surface   .dcti-card, .dcti-card__head, .dcti-card__body, .dcti-card__foot
 *   data      .dcti-kpi, .dcti-table
 *   status    .dcti-pill (+ --success/--warn/--danger/--accent), .dcti-banner
 *   nav       .dcti-nav, .dcti-nav__item, .dcti-nav__group
 *   misc      .dcti-icon, .dcti-divider, .dcti-kbd, .dcti-avatar
 * ───────────────────────────────────────────────────────────────────────── */

/* ─── Reset (minimal) ───────────────────────────────────────────────── */
.dcti-reset *,
.dcti-reset *::before,
.dcti-reset *::after { box-sizing: border-box; }
.dcti-reset { margin: 0; }

html, body {
  background: var(--dcti-bg);
  color: var(--dcti-text);
  font-family: var(--dcti-font-sans);
  font-size: var(--dcti-text-md);
  line-height: var(--dcti-leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--dcti-accent-muted);
  color: var(--dcti-text);
}

/* ─── Text utilities ────────────────────────────────────────────────── */
.dcti-eyebrow {
  font-family: var(--dcti-font-mono);
  font-size: var(--dcti-text-xs);
  font-weight: 600;
  letter-spacing: var(--dcti-tracking-wide);
  text-transform: uppercase;
  color: var(--dcti-text-faint);
}

.dcti-mono {
  font-family: var(--dcti-font-mono);
  font-variant-numeric: tabular-nums;
}

.dcti-muted { color: var(--dcti-text-muted); }
.dcti-faint { color: var(--dcti-text-faint); }

h1.dcti, .dcti-h1 {
  font-size: var(--dcti-text-2xl);
  font-weight: 700;
  letter-spacing: var(--dcti-tracking-tight);
  line-height: var(--dcti-leading-tight);
  color: var(--dcti-text);
  margin: 0;
}
h2.dcti, .dcti-h2 {
  font-size: var(--dcti-text-xl);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: var(--dcti-leading-snug);
  color: var(--dcti-text);
  margin: 0;
}
h3.dcti, .dcti-h3 {
  font-size: var(--dcti-text-lg);
  font-weight: 600;
  line-height: var(--dcti-leading-snug);
  color: var(--dcti-text);
  margin: 0;
}

/* ─── Buttons ───────────────────────────────────────────────────────── */
.dcti-btn {
  --_h: var(--dcti-control-md);
  --_pad: var(--dcti-space-3);
  --_fs: var(--dcti-text-sm);

  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--dcti-space-2);
  height: var(--_h);
  padding: 0 var(--_pad);
  border: 1px solid transparent;
  border-radius: var(--dcti-radius-md);
  font-family: inherit;
  font-size: var(--_fs);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.005em;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition:
    background var(--dcti-duration-fast) var(--dcti-ease),
    border-color var(--dcti-duration-fast) var(--dcti-ease),
    color var(--dcti-duration-fast) var(--dcti-ease),
    box-shadow var(--dcti-duration-fast) var(--dcti-ease);
}
.dcti-btn:focus-visible { outline: none; box-shadow: var(--dcti-focus-ring); }
.dcti-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.dcti-btn--sm { --_h: var(--dcti-control-sm); --_pad: var(--dcti-space-2); --_fs: var(--dcti-text-xs); }
.dcti-btn--lg { --_h: var(--dcti-control-lg); --_pad: var(--dcti-space-4); --_fs: var(--dcti-text-md); }

.dcti-btn--primary {
  background: var(--dcti-accent);
  color: var(--dcti-on-accent);
}
.dcti-btn--primary:hover:not(:disabled) { background: var(--dcti-accent-hover); }

.dcti-btn--secondary {
  background: var(--dcti-surface);
  color: var(--dcti-text);
  border-color: var(--dcti-border-strong);
}
.dcti-btn--secondary:hover:not(:disabled) { background: var(--dcti-surface-2); }

.dcti-btn--ghost {
  background: transparent;
  color: var(--dcti-text);
}
.dcti-btn--ghost:hover:not(:disabled) { background: var(--dcti-surface-2); }

.dcti-btn--danger {
  background: var(--dcti-danger);
  color: #FFFFFF;
}
.dcti-btn--danger:hover:not(:disabled) { filter: brightness(0.94); }

/* ─── Form controls ────────────────────────────────────────────────── */
.dcti-input,
.dcti-select {
  appearance: none;
  display: inline-flex;
  align-items: center;
  width: 100%;
  height: var(--dcti-control-md);
  padding: 0 var(--dcti-space-3);
  background: var(--dcti-surface);
  color: var(--dcti-text);
  border: 1px solid var(--dcti-border-strong);
  border-radius: var(--dcti-radius-md);
  font-family: inherit;
  font-size: var(--dcti-text-sm);
  line-height: 1;
  outline: none;
  transition: border-color var(--dcti-duration-fast) var(--dcti-ease),
              box-shadow var(--dcti-duration-fast) var(--dcti-ease);
}
.dcti-input::placeholder { color: var(--dcti-text-faint); }
.dcti-input:focus,
.dcti-select:focus { border-color: var(--dcti-accent); box-shadow: var(--dcti-focus-ring); }
.dcti-input:disabled,
.dcti-select:disabled { background: var(--dcti-surface-2); color: var(--dcti-text-faint); cursor: not-allowed; }

.dcti-select {
  padding-right: 28px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path fill='%2371717A' d='M0 0h10L5 6z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
}

.dcti-search {
  display: flex;
  align-items: center;
  gap: var(--dcti-space-2);
  width: 100%;
  height: var(--dcti-control-md);
  padding: 0 var(--dcti-space-3);
  background: var(--dcti-surface);
  color: var(--dcti-text-faint);
  border: 1px solid var(--dcti-border-strong);
  border-radius: var(--dcti-radius-md);
  font-size: var(--dcti-text-sm);
}
.dcti-search input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--dcti-text);
  font: inherit;
  min-width: 0;
}
.dcti-search input::placeholder { color: var(--dcti-text-faint); }

.dcti-label {
  display: block;
  font-size: var(--dcti-text-sm);
  font-weight: 500;
  color: var(--dcti-text-muted);
  margin-bottom: var(--dcti-space-1);
}

.dcti-field {
  display: flex;
  flex-direction: column;
  gap: var(--dcti-space-1);
}
.dcti-field__help {
  font-size: var(--dcti-text-xs);
  color: var(--dcti-text-faint);
}
.dcti-field--error .dcti-input,
.dcti-field--error .dcti-select { border-color: var(--dcti-danger); }
.dcti-field--error .dcti-field__help { color: var(--dcti-danger); }

/* Toggle (binary on/off switch) */
.dcti-toggle {
  --_w: 32px;
  --_h: 18px;
  --_pad: 1px;

  appearance: none;
  position: relative;
  width: var(--_w);
  height: var(--_h);
  padding: 0;
  border: 1px solid var(--dcti-border-strong);
  border-radius: var(--dcti-radius-pill);
  background: var(--dcti-surface-2);
  cursor: pointer;
  transition: background var(--dcti-duration-fast) var(--dcti-ease),
              border-color var(--dcti-duration-fast) var(--dcti-ease);
}
.dcti-toggle::after {
  content: "";
  position: absolute;
  top: var(--_pad);
  left: var(--_pad);
  width: calc(var(--_h) - 2 * var(--_pad) - 2px);
  height: calc(var(--_h) - 2 * var(--_pad) - 2px);
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
  transition: transform var(--dcti-duration-fast) var(--dcti-ease);
}
.dcti-toggle[aria-checked="true"],
.dcti-toggle:checked {
  background: var(--dcti-accent);
  border-color: var(--dcti-accent);
}
.dcti-toggle[aria-checked="true"]::after,
.dcti-toggle:checked::after {
  transform: translateX(calc(var(--_w) - var(--_h)));
}
.dcti-toggle:focus-visible { outline: none; box-shadow: var(--dcti-focus-ring); }

/* Checkbox */
.dcti-check {
  --_s: 16px;

  appearance: none;
  width: var(--_s);
  height: var(--_s);
  border: 1px solid var(--dcti-border-strong);
  border-radius: var(--dcti-radius-sm);
  background: var(--dcti-surface);
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  transition: background var(--dcti-duration-fast) var(--dcti-ease),
              border-color var(--dcti-duration-fast) var(--dcti-ease);
  position: relative;
}
.dcti-check:checked,
.dcti-check[aria-checked="true"] {
  background: var(--dcti-accent);
  border-color: var(--dcti-accent);
}
.dcti-check:checked::after,
.dcti-check[aria-checked="true"]::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--dcti-on-accent);
  border-bottom: 2px solid var(--dcti-on-accent);
  transform: translateY(-1px) rotate(-45deg);
}
.dcti-check:focus-visible { outline: none; box-shadow: var(--dcti-focus-ring); }

/* Inline option row — used to wrap toggles + checkboxes with their label */
.dcti-option {
  display: inline-flex;
  align-items: center;
  gap: var(--dcti-space-2);
  font-size: var(--dcti-text-sm);
  color: var(--dcti-text-muted);
  cursor: pointer;
  user-select: none;
}

/* ─── Surfaces ──────────────────────────────────────────────────────── */
.dcti-card {
  background: var(--dcti-surface);
  border: 1px solid var(--dcti-border);
  border-radius: var(--dcti-radius-lg);
  overflow: hidden;
}
.dcti-card--quiet { background: var(--dcti-surface-2); }
.dcti-card--elevated { box-shadow: var(--dcti-shadow-md); }

.dcti-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--dcti-space-3);
  padding: var(--dcti-space-4);
  border-bottom: 1px solid var(--dcti-border);
}
.dcti-card__head h3 {
  margin: 0;
  font-size: var(--dcti-text-md);
  font-weight: 600;
  color: var(--dcti-text);
}
.dcti-card__body { padding: var(--dcti-space-4); }
.dcti-card__foot {
  padding: var(--dcti-space-3) var(--dcti-space-4);
  border-top: 1px solid var(--dcti-border);
  background: var(--dcti-surface-2);
  display: flex;
  gap: var(--dcti-space-2);
  justify-content: flex-end;
}

/* KPI card — metric + delta */
.dcti-kpi {
  background: var(--dcti-surface);
  border: 1px solid var(--dcti-border);
  border-radius: var(--dcti-radius-lg);
  padding: var(--dcti-space-4);
}
.dcti-kpi__label {
  font-family: var(--dcti-font-mono);
  font-size: var(--dcti-text-xs);
  font-weight: 600;
  letter-spacing: var(--dcti-tracking-wide);
  text-transform: uppercase;
  color: var(--dcti-text-faint);
}
.dcti-kpi__value {
  display: flex;
  align-items: baseline;
  gap: var(--dcti-space-2);
  margin-top: var(--dcti-space-1);
}
.dcti-kpi__value strong {
  font-size: var(--dcti-text-2xl);
  font-weight: 700;
  letter-spacing: var(--dcti-tracking-tight);
  color: var(--dcti-text);
  font-variant-numeric: tabular-nums;
}
.dcti-kpi__delta {
  font-family: var(--dcti-font-mono);
  font-size: var(--dcti-text-xs);
  font-weight: 600;
}
.dcti-kpi__delta--up    { color: var(--dcti-success); }
.dcti-kpi__delta--down  { color: var(--dcti-danger); }
.dcti-kpi__delta--good  { color: var(--dcti-success); }

/* ─── Status ────────────────────────────────────────────────────────── */
.dcti-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--dcti-space-1);
  padding: 3px 9px;
  background: var(--dcti-surface-2);
  color: var(--dcti-text-muted);
  border: 1px solid var(--dcti-border);
  border-radius: var(--dcti-radius-pill);
  font-size: var(--dcti-text-xs);
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
}
.dcti-pill__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  display: inline-block;
  flex-shrink: 0;
}
.dcti-pill--accent  { background: var(--dcti-accent-muted);  color: var(--dcti-accent);  border-color: var(--dcti-accent-border); }
.dcti-pill--success { background: var(--dcti-success-muted); color: var(--dcti-success); border-color: var(--dcti-success-border); }
.dcti-pill--warn    { background: var(--dcti-warn-muted);    color: var(--dcti-warn);    border-color: var(--dcti-warn-border); }
.dcti-pill--danger  { background: var(--dcti-danger-muted);  color: var(--dcti-danger);  border-color: var(--dcti-danger-border); }
.dcti-pill--info    { background: var(--dcti-info-muted);    color: var(--dcti-info);    border-color: var(--dcti-info-border); }

.dcti-banner {
  display: flex;
  align-items: center;
  gap: var(--dcti-space-3);
  padding: var(--dcti-space-3) var(--dcti-space-4);
  background: var(--dcti-surface);
  color: var(--dcti-text);
  border: 1px solid var(--dcti-border);
  border-radius: var(--dcti-radius-md);
  font-size: var(--dcti-text-sm);
}
.dcti-banner__icon { color: var(--dcti-text-faint); display: inline-flex; flex-shrink: 0; }
.dcti-banner__body { flex: 1; min-width: 0; }
.dcti-banner__actions { display: flex; gap: var(--dcti-space-2); }
.dcti-banner--accent  { background: var(--dcti-accent-muted);  border-color: var(--dcti-accent-border); }
.dcti-banner--accent  .dcti-banner__icon { color: var(--dcti-accent); }
.dcti-banner--success { background: var(--dcti-success-muted); border-color: var(--dcti-success-border); }
.dcti-banner--success .dcti-banner__icon { color: var(--dcti-success); }
.dcti-banner--warn    { background: var(--dcti-warn-muted);    border-color: var(--dcti-warn-border); }
.dcti-banner--warn    .dcti-banner__icon { color: var(--dcti-warn); }
.dcti-banner--danger  { background: var(--dcti-danger-muted);  border-color: var(--dcti-danger-border); }
.dcti-banner--danger  .dcti-banner__icon { color: var(--dcti-danger); }

/* ─── Tables ────────────────────────────────────────────────────────── */
.dcti-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--dcti-text-sm);
}
.dcti-table th,
.dcti-table td {
  text-align: left;
  padding: var(--dcti-space-2) var(--dcti-space-3);
  border-bottom: 1px solid var(--dcti-border);
  vertical-align: middle;
}
.dcti-table th {
  font-family: var(--dcti-font-mono);
  font-size: var(--dcti-text-xs);
  font-weight: 600;
  letter-spacing: var(--dcti-tracking-wide);
  text-transform: uppercase;
  color: var(--dcti-text-faint);
  background: var(--dcti-surface-2);
}
.dcti-table tbody tr:hover { background: var(--dcti-surface-2); }
.dcti-table td.dcti-mono { font-variant-numeric: tabular-nums; }

/* ─── Navigation ────────────────────────────────────────────────────── */
.dcti-app {
  display: grid;
  grid-template-columns: var(--dcti-sidebar-w) 1fr;
  min-height: 100vh;
  background: var(--dcti-bg);
}

.dcti-sidebar {
  display: flex;
  flex-direction: column;
  background: var(--dcti-surface);
  border-right: 1px solid var(--dcti-border);
  padding: var(--dcti-space-4);
  gap: var(--dcti-space-2);
  position: sticky;
  top: 0;
  height: 100vh;
}
.dcti-sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--dcti-space-3);
  padding: var(--dcti-space-2) var(--dcti-space-2) var(--dcti-space-4);
}
.dcti-sidebar__brand img { height: 28px; width: auto; }

.dcti-nav { display: flex; flex-direction: column; gap: 1px; }
.dcti-nav__group {
  font-family: var(--dcti-font-mono);
  font-size: var(--dcti-text-xs);
  font-weight: 600;
  letter-spacing: var(--dcti-tracking-wide);
  text-transform: uppercase;
  color: var(--dcti-text-faint);
  padding: var(--dcti-space-3) var(--dcti-space-2) var(--dcti-space-1);
}
.dcti-nav__item {
  display: flex;
  align-items: center;
  gap: var(--dcti-space-2);
  padding: var(--dcti-space-2) var(--dcti-space-3);
  border-radius: var(--dcti-radius-sm);
  color: var(--dcti-text-muted);
  font-size: var(--dcti-text-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dcti-duration-fast) var(--dcti-ease),
              color var(--dcti-duration-fast) var(--dcti-ease);
}
.dcti-nav__item:hover { background: var(--dcti-surface-2); color: var(--dcti-text); }
.dcti-nav__item--active {
  background: var(--dcti-accent-muted);
  color: var(--dcti-accent);
  font-weight: 600;
}
.dcti-nav__item__icon { flex-shrink: 0; display: inline-flex; }
.dcti-nav__item__label { flex: 1; }
.dcti-nav__item__badge {
  font-family: var(--dcti-font-mono);
  font-size: 10px;
  font-weight: 700;
  background: var(--dcti-danger);
  color: #FFFFFF;
  padding: 1px 6px;
  border-radius: var(--dcti-radius-pill);
}

.dcti-topbar {
  display: flex;
  align-items: center;
  gap: var(--dcti-space-3);
  height: var(--dcti-topbar-h);
  padding: 0 var(--dcti-space-4);
  background: var(--dcti-surface);
  border-bottom: 1px solid var(--dcti-border);
  position: sticky;
  top: 0;
  z-index: var(--dcti-z-sticky);
}
.dcti-topbar__crumbs {
  display: flex;
  align-items: center;
  gap: var(--dcti-space-2);
  font-size: var(--dcti-text-sm);
  color: var(--dcti-text-muted);
}
.dcti-topbar__crumbs strong { color: var(--dcti-text); font-weight: 600; }
.dcti-topbar__spacer { flex: 1; }

.dcti-content {
  padding: var(--dcti-space-6);
  display: flex;
  flex-direction: column;
  gap: var(--dcti-space-6);
}

/* ─── Misc primitives ───────────────────────────────────────────────── */
.dcti-divider {
  height: 1px;
  background: var(--dcti-border);
  border: 0;
  margin: var(--dcti-space-4) 0;
}

.dcti-kbd {
  display: inline-flex;
  align-items: center;
  padding: 2px 6px;
  font-family: var(--dcti-font-mono);
  font-size: 10px;
  border: 1px solid var(--dcti-border);
  border-radius: var(--dcti-radius-sm);
  background: var(--dcti-surface-2);
  color: var(--dcti-text-muted);
}

.dcti-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--dcti-radius-pill);
  background: var(--dcti-accent);
  color: var(--dcti-on-accent);
  font-size: var(--dcti-text-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.dcti-icon {
  display: inline-flex;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: currentColor;
}
.dcti-icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
