/* ==========================================================================
 * Cutta Components v1
 * ==========================================================================
 * All components consume design-system.css tokens. No hardcoded colors.
 * Class prefix: .c- (compact, distinct from third-party)
 * Pattern: BEM-ish (.c-block__elem, .c-block--variant)
 * ========================================================================== */

/* ─────────────────────────────────────────────────────────────────────
 * BUTTON
 * ───────────────────────────────────────────────────────────────────── */
.c-btn {
  --c-btn-bg: var(--cutta-bg-2);
  --c-btn-fg: var(--cutta-ink);
  --c-btn-bd: var(--cutta-line-2);
  --c-btn-hbg: var(--cutta-bg-3);
  --c-btn-hbd: var(--cutta-line-3);

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--cutta-space-2);
  padding: 0 var(--cutta-space-4);
  height: 36px;
  font-size: var(--cutta-text-md);
  font-weight: var(--cutta-weight-medium);
  letter-spacing: -0.005em;
  color: var(--c-btn-fg);
  background: var(--c-btn-bg);
  border: 1px solid var(--c-btn-bd);
  border-radius: var(--cutta-radius-md);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition:
    background-color var(--cutta-dur-micro) var(--cutta-ease-out),
    border-color var(--cutta-dur-micro) var(--cutta-ease-out),
    transform var(--cutta-dur-micro) var(--cutta-ease-spring),
    box-shadow var(--cutta-dur-micro) var(--cutta-ease-out);
  -webkit-tap-highlight-color: transparent;
}
.c-btn:hover { background: var(--c-btn-hbg); border-color: var(--c-btn-hbd); }
.c-btn:active { transform: scale(0.97); }
.c-btn:disabled { opacity: 0.45; pointer-events: none; }

/* size variants */
.c-btn--xs { height: 24px; padding: 0 var(--cutta-space-2); font-size: var(--cutta-text-xs); border-radius: var(--cutta-radius-sm); }
.c-btn--sm { height: 30px; padding: 0 var(--cutta-space-3); font-size: var(--cutta-text-sm); }
.c-btn--lg { height: 44px; padding: 0 var(--cutta-space-5); font-size: var(--cutta-text-base); border-radius: var(--cutta-radius-lg); }

/* color variants */
.c-btn--primary {
  --c-btn-bg: var(--cutta-accent);
  --c-btn-fg: var(--cutta-accent-ink);
  --c-btn-bd: var(--cutta-accent);
  --c-btn-hbg: var(--cutta-accent-strong);
  --c-btn-hbd: var(--cutta-accent-strong);
}
.c-btn--primary:hover { box-shadow: 0 0 0 4px var(--cutta-accent-tint); }

.c-btn--ghost {
  --c-btn-bg: transparent;
  --c-btn-bd: transparent;
  --c-btn-hbg: var(--cutta-bg-2);
  --c-btn-hbd: transparent;
}

.c-btn--outline {
  --c-btn-bg: transparent;
  --c-btn-bd: var(--cutta-line-3);
  --c-btn-hbg: var(--cutta-bg-1);
}

.c-btn--danger {
  --c-btn-bg: var(--cutta-danger-soft);
  --c-btn-fg: var(--cutta-danger);
  --c-btn-bd: transparent;
  --c-btn-hbg: var(--cutta-danger);
  --c-btn-hbd: transparent;
}
.c-btn--danger:hover { color: var(--cutta-accent-ink); }

.c-btn--icon { width: 36px; padding: 0; }
.c-btn--xs.c-btn--icon { width: 24px; }
.c-btn--sm.c-btn--icon { width: 30px; }
.c-btn--lg.c-btn--icon { width: 44px; }

/* ─────────────────────────────────────────────────────────────────────
 * CARD
 * ───────────────────────────────────────────────────────────────────── */
.c-card {
  background: var(--cutta-bg-1);
  border: 1px solid var(--cutta-line);
  border-radius: var(--cutta-radius-lg);
  box-shadow: var(--cutta-shadow-xs);
  position: relative;
  overflow: hidden;
  transition:
    border-color var(--cutta-dur-short) var(--cutta-ease-out),
    box-shadow var(--cutta-dur-short) var(--cutta-ease-out),
    transform var(--cutta-dur-short) var(--cutta-ease-out),
    background-color var(--cutta-dur-short) var(--cutta-ease-out);
}
.c-card--flat { box-shadow: none; }
.c-card--elevated { background: var(--cutta-bg-2); box-shadow: var(--cutta-shadow-md); }
.c-card--interactive { cursor: pointer; }
.c-card--interactive:hover {
  transform: translateY(-2px);
  border-color: var(--cutta-line-2);
  box-shadow: var(--cutta-shadow-lg);
}

.c-card__head {
  display: flex; align-items: center; justify-content: space-between; gap: var(--cutta-space-3);
  padding: var(--cutta-space-4) var(--cutta-space-5);
  border-bottom: 1px solid var(--cutta-line);
}
.c-card__title { font-size: var(--cutta-text-md); font-weight: var(--cutta-weight-semibold); }
.c-card__sub { font-size: var(--cutta-text-xs); color: var(--cutta-ink-3); }
.c-card__body { padding: var(--cutta-space-5); }
.c-card__foot {
  padding: var(--cutta-space-3) var(--cutta-space-5);
  border-top: 1px solid var(--cutta-line);
  display: flex; align-items: center; justify-content: space-between;
  font-size: var(--cutta-text-sm); color: var(--cutta-ink-3);
}

/* ─────────────────────────────────────────────────────────────────────
 * INPUT / SELECT
 * ───────────────────────────────────────────────────────────────────── */
.c-input,
.c-select {
  height: 36px;
  padding: 0 var(--cutta-space-3);
  background: var(--cutta-bg-1);
  color: var(--cutta-ink);
  border: 1px solid var(--cutta-line-2);
  border-radius: var(--cutta-radius-md);
  font-size: var(--cutta-text-md);
  width: 100%;
  transition: border-color var(--cutta-dur-micro) var(--cutta-ease-out),
              box-shadow var(--cutta-dur-micro) var(--cutta-ease-out);
}
.c-input::placeholder { color: var(--cutta-ink-4); }
.c-input:hover,
.c-select:hover { border-color: var(--cutta-line-3); }
.c-input:focus,
.c-select:focus {
  border-color: var(--cutta-accent);
  outline: none;
  box-shadow: 0 0 0 4px var(--cutta-accent-tint);
}
.c-input--sm,
.c-select--sm { height: 28px; font-size: var(--cutta-text-sm); padding: 0 var(--cutta-space-2); }
.c-input--lg,
.c-select--lg { height: 44px; font-size: var(--cutta-text-base); border-radius: var(--cutta-radius-lg); }

.c-select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238E8E86' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat;
  background-position: right var(--cutta-space-3) center;
  padding-right: var(--cutta-space-8);
}

.c-input-group {
  position: relative;
  display: inline-flex; align-items: center;
}
.c-input-group__icon {
  position: absolute; left: var(--cutta-space-3);
  width: 16px; height: 16px;
  color: var(--cutta-ink-3); pointer-events: none;
}
.c-input-group .c-input { padding-left: calc(var(--cutta-space-3) + 16px + var(--cutta-space-2)); }

/* ─────────────────────────────────────────────────────────────────────
 * FILTER CHIP
 * ───────────────────────────────────────────────────────────────────── */
.c-chip {
  display: inline-flex; align-items: center; gap: var(--cutta-space-2);
  padding: 0 var(--cutta-space-3);
  height: 28px;
  background: var(--cutta-bg-1);
  border: 1px solid var(--cutta-line-2);
  color: var(--cutta-ink-2);
  font-size: var(--cutta-text-sm);
  border-radius: var(--cutta-radius-pill);
  cursor: pointer; user-select: none; white-space: nowrap;
  transition:
    background-color var(--cutta-dur-micro) var(--cutta-ease-out),
    color var(--cutta-dur-micro) var(--cutta-ease-out),
    border-color var(--cutta-dur-micro) var(--cutta-ease-out),
    transform var(--cutta-dur-micro) var(--cutta-ease-spring);
}
.c-chip:hover { background: var(--cutta-bg-2); color: var(--cutta-ink); border-color: var(--cutta-line-3); }
.c-chip:active { transform: scale(0.96); }
.c-chip--active {
  background: var(--cutta-accent);
  color: var(--cutta-accent-ink);
  border-color: var(--cutta-accent);
  box-shadow: 0 0 0 3px var(--cutta-accent-tint);
}
.c-chip--active:hover { background: var(--cutta-accent-strong); border-color: var(--cutta-accent-strong); color: var(--cutta-accent-ink); }
.c-chip__close {
  width: 14px; height: 14px; opacity: 0.6;
  transition: opacity var(--cutta-dur-micro);
}
.c-chip__close:hover { opacity: 1; }

/* horizontal scroll group (Apple Music vibe) */
.c-chip-row {
  display: flex; gap: var(--cutta-space-2);
  overflow-x: auto;
  padding-bottom: var(--cutta-space-2);
  scrollbar-width: none;
  scroll-snap-type: x proximity;
  mask-image: linear-gradient(to right, black 0, black calc(100% - 32px), transparent 100%);
}
.c-chip-row::-webkit-scrollbar { display: none; }
.c-chip-row > .c-chip { scroll-snap-align: start; flex-shrink: 0; }

/* ─────────────────────────────────────────────────────────────────────
 * TAG / BADGE
 * ───────────────────────────────────────────────────────────────────── */
.c-tag {
  display: inline-flex; align-items: center; gap: var(--cutta-space-1);
  padding: 0 var(--cutta-space-2);
  height: 20px;
  font-size: var(--cutta-text-2xs);
  font-weight: var(--cutta-weight-medium);
  border-radius: var(--cutta-radius-sm);
  background: var(--cutta-bg-2);
  color: var(--cutta-ink-2);
  letter-spacing: 0.01em;
}
.c-tag--accent  { background: var(--cutta-accent-tint); color: var(--cutta-accent-soft); }
.c-tag--success { background: var(--cutta-success-soft); color: var(--cutta-success); }
.c-tag--warning { background: var(--cutta-warning-soft); color: var(--cutta-warning); }
.c-tag--danger  { background: var(--cutta-danger-soft); color: var(--cutta-danger); }
.c-tag--info    { background: var(--cutta-info-soft); color: var(--cutta-info); }
.c-tag--bronze  { background: rgba(184, 148, 105, 0.14); color: var(--cutta-bronze-soft); }

.c-tag--dot::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: var(--cutta-radius-pill);
  background: currentColor;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.06);
}

/* badge — small numerical pill */
.c-badge {
  display: inline-grid; place-items: center;
  min-width: 18px; height: 18px;
  padding: 0 5px;
  font-size: var(--cutta-text-2xs); font-weight: var(--cutta-weight-semibold);
  background: var(--cutta-accent); color: var(--cutta-accent-ink);
  border-radius: var(--cutta-radius-pill);
}

/* ─────────────────────────────────────────────────────────────────────
 * AVATAR
 * ───────────────────────────────────────────────────────────────────── */
.c-avatar {
  position: relative;
  display: inline-grid; place-items: center;
  width: 32px; height: 32px;
  border-radius: var(--cutta-radius-pill);
  background: var(--cutta-bg-3);
  color: var(--cutta-ink-2);
  font-size: var(--cutta-text-sm);
  font-weight: var(--cutta-weight-semibold);
  overflow: hidden;
  border: 1px solid var(--cutta-line);
}
.c-avatar img { width: 100%; height: 100%; object-fit: cover; }
.c-avatar--xs { width: 20px; height: 20px; font-size: var(--cutta-text-2xs); }
.c-avatar--sm { width: 24px; height: 24px; font-size: var(--cutta-text-xs); }
.c-avatar--lg { width: 44px; height: 44px; font-size: var(--cutta-text-md); }
.c-avatar--xl { width: 64px; height: 64px; font-size: var(--cutta-text-xl); }

/* ─────────────────────────────────────────────────────────────────────
 * KPI CARD
 * ───────────────────────────────────────────────────────────────────── */
.c-kpi {
  position: relative;
  background: var(--cutta-bg-1);
  border: 1px solid var(--cutta-line);
  border-radius: var(--cutta-radius-lg);
  padding: var(--cutta-space-5) var(--cutta-space-6);
  overflow: hidden;
  transition:
    transform var(--cutta-dur-short) var(--cutta-ease-out),
    border-color var(--cutta-dur-short) var(--cutta-ease-out),
    box-shadow var(--cutta-dur-short) var(--cutta-ease-out);
}
.c-kpi::before {
  content: ""; position: absolute; inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cutta-accent-tint), transparent);
  opacity: 0; transition: opacity var(--cutta-dur-short);
}
.c-kpi:hover { transform: translateY(-2px); border-color: var(--cutta-line-3); box-shadow: var(--cutta-shadow-md); }
.c-kpi:hover::before { opacity: 1; }

.c-kpi__label {
  font-size: var(--cutta-text-xs);
  text-transform: uppercase;
  letter-spacing: var(--cutta-tracking-uppercase);
  color: var(--cutta-ink-3);
  margin-bottom: var(--cutta-space-3);
  display: flex; align-items: center; gap: var(--cutta-space-2);
}
.c-kpi__value {
  font-family: var(--cutta-font-display);
  font-weight: var(--cutta-weight-medium);
  font-size: var(--cutta-text-4xl);
  letter-spacing: var(--cutta-tracking-display);
  line-height: var(--cutta-leading-tight);
  color: var(--cutta-ink);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}
.c-kpi__unit { color: var(--cutta-ink-3); font-size: 0.65em; margin-left: 4px; font-family: var(--cutta-font-sans); }
.c-kpi__sub  { font-size: var(--cutta-text-xs); color: var(--cutta-ink-3); margin-top: var(--cutta-space-2); display: flex; align-items: center; gap: var(--cutta-space-2); }
.c-kpi__delta {
  display: inline-flex; align-items: center; gap: 2px;
  font-size: var(--cutta-text-2xs); font-weight: var(--cutta-weight-medium);
  padding: 2px 6px; border-radius: var(--cutta-radius-sm);
  font-family: var(--cutta-font-mono);
}
.c-kpi__delta--up   { color: var(--cutta-success); background: var(--cutta-success-soft); }
.c-kpi__delta--down { color: var(--cutta-danger);  background: var(--cutta-danger-soft); }

.c-kpi__spark {
  position: absolute;
  right: var(--cutta-space-4); bottom: var(--cutta-space-4);
  width: 96px; height: 36px;
  opacity: 0.7;
  pointer-events: none;
}

/* ─────────────────────────────────────────────────────────────────────
 * DATA TABLE
 * ───────────────────────────────────────────────────────────────────── */
.c-table-wrap {
  background: var(--cutta-bg-1);
  border: 1px solid var(--cutta-line);
  border-radius: var(--cutta-radius-lg);
  overflow: hidden;
}
.c-table {
  width: 100%;
  font-size: var(--cutta-text-sm);
  border-collapse: separate;
  border-spacing: 0;
}
.c-table thead th {
  position: sticky; top: 0;
  background: var(--cutta-bg-1);
  z-index: var(--cutta-z-sticky);
  text-align: left;
  font-size: var(--cutta-text-xs);
  text-transform: uppercase;
  letter-spacing: var(--cutta-tracking-uppercase);
  color: var(--cutta-ink-3);
  font-weight: var(--cutta-weight-medium);
  padding: var(--cutta-space-3) var(--cutta-space-4);
  border-bottom: 1px solid var(--cutta-line);
}
.c-table thead th[data-sort] {
  cursor: pointer; user-select: none;
}
.c-table thead th[data-sort]:hover { color: var(--cutta-ink); }
.c-table thead th[data-sort]::after {
  content: ""; display: inline-block; vertical-align: middle;
  margin-left: 4px;
  width: 0; height: 0;
  border-left: 3px solid transparent; border-right: 3px solid transparent;
  border-top: 4px solid currentColor;
  opacity: 0; transition: opacity var(--cutta-dur-micro), transform var(--cutta-dur-short) var(--cutta-ease-spring);
}
.c-table thead th[aria-sort]::after { opacity: 0.8; }
.c-table thead th[aria-sort="ascending"]::after { transform: rotate(180deg); }

.c-table tbody td {
  padding: var(--cutta-space-3) var(--cutta-space-4);
  border-bottom: 1px solid var(--cutta-line);
  color: var(--cutta-ink-2);
  vertical-align: middle;
  transition: background-color var(--cutta-dur-micro);
}
.c-table tbody tr:last-child td { border-bottom: 0; }
.c-table tbody tr:hover td { background: var(--cutta-bg-2); }

.c-table tbody td.is-num {
  font-family: var(--cutta-font-mono); font-feature-settings: "tnum";
  text-align: right; color: var(--cutta-ink);
}

/* ─────────────────────────────────────────────────────────────────────
 * SKELETON LOADER (shimmer)
 * ───────────────────────────────────────────────────────────────────── */
.c-skel {
  display: inline-block;
  height: 12px; min-width: 60px;
  border-radius: var(--cutta-radius-xs);
  background: linear-gradient(90deg,
    var(--cutta-bg-2) 0%, var(--cutta-bg-3) 50%, var(--cutta-bg-2) 100%);
  background-size: 200% 100%;
  animation: cutta-shimmer 1.4s linear infinite;
}
.c-skel--text  { width: 80%; }
.c-skel--title { height: 18px; width: 50%; }
.c-skel--num   { height: 32px; width: 40%; }
.c-skel--avatar{ height: 32px; width: 32px; border-radius: var(--cutta-radius-pill); }
.c-skel--card  { height: 120px; width: 100%; border-radius: var(--cutta-radius-lg); }
.c-skel--row {
  display: flex; align-items: center; gap: var(--cutta-space-3);
  padding: var(--cutta-space-3) var(--cutta-space-4);
}

/* ─────────────────────────────────────────────────────────────────────
 * EMPTY STATE
 * ───────────────────────────────────────────────────────────────────── */
.c-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: var(--cutta-space-12) var(--cutta-space-6);
  text-align: center;
}
.c-empty__icon {
  width: 80px; height: 80px;
  margin-bottom: var(--cutta-space-4);
  border-radius: var(--cutta-radius-pill);
  background: var(--cutta-bg-2);
  display: grid; place-items: center;
  color: var(--cutta-ink-4);
  position: relative;
}
.c-empty__icon::before {
  content: ""; position: absolute; inset: -8px;
  border-radius: var(--cutta-radius-pill);
  background: radial-gradient(closest-side, var(--cutta-line), transparent);
  opacity: 0.5;
}
.c-empty__icon svg { width: 36px; height: 36px; position: relative; z-index: 1; }
.c-empty__title { font-size: var(--cutta-text-lg); font-weight: var(--cutta-weight-semibold); margin-bottom: var(--cutta-space-2); color: var(--cutta-ink); }
.c-empty__desc { font-size: var(--cutta-text-sm); color: var(--cutta-ink-3); max-width: 320px; line-height: var(--cutta-leading-base); }
.c-empty__actions { margin-top: var(--cutta-space-5); display: flex; gap: var(--cutta-space-2); }

/* ─────────────────────────────────────────────────────────────────────
 * TOAST
 * ───────────────────────────────────────────────────────────────────── */
.c-toast-host {
  position: fixed; top: var(--cutta-space-6); left: 50%;
  transform: translateX(-50%);
  z-index: var(--cutta-z-toast);
  display: flex; flex-direction: column; gap: var(--cutta-space-2);
  pointer-events: none;
  /* Container is always-on; child .c-toast elements opt their own pointer-events back in.
     Explicitly opt-out of any page-enter fade since this is appended to body at runtime. */
  animation: none !important;
}
.c-toast {
  pointer-events: auto;
  min-width: 280px; max-width: 420px;
  display: flex; align-items: flex-start; gap: var(--cutta-space-3);
  padding: var(--cutta-space-3) var(--cutta-space-4);
  background: var(--cutta-bg-2);
  border: 1px solid var(--cutta-line-2);
  border-radius: var(--cutta-radius-lg);
  box-shadow: var(--cutta-shadow-lg);
  font-size: var(--cutta-text-sm);
  color: var(--cutta-ink);
  animation: cutta-slide-down var(--cutta-dur-medium) var(--cutta-ease-out) both;
  backdrop-filter: var(--cutta-backdrop-blur);
}
.c-toast--success { border-color: var(--cutta-success); }
.c-toast--warning { border-color: var(--cutta-warning); }
.c-toast--danger  { border-color: var(--cutta-danger); }
.c-toast--info    { border-color: var(--cutta-info); }
.c-toast__icon { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.c-toast__body { flex: 1; line-height: var(--cutta-leading-base); }
.c-toast__close {
  flex-shrink: 0; opacity: 0.6;
  width: 18px; height: 18px; cursor: pointer;
  transition: opacity var(--cutta-dur-micro);
}
.c-toast__close:hover { opacity: 1; }

/* ─────────────────────────────────────────────────────────────────────
 * TABS (with sliding underline)
 * ───────────────────────────────────────────────────────────────────── */
.c-tabs {
  position: relative;
  display: inline-flex;
  gap: var(--cutta-space-1);
  border-bottom: 1px solid var(--cutta-line);
}
.c-tabs__btn {
  position: relative;
  padding: var(--cutta-space-3) var(--cutta-space-4);
  font-size: var(--cutta-text-sm);
  font-weight: var(--cutta-weight-medium);
  color: var(--cutta-ink-3);
  background: transparent; border: 0; cursor: pointer;
  transition: color var(--cutta-dur-micro);
}
.c-tabs__btn:hover { color: var(--cutta-ink-2); }
.c-tabs__btn.is-active { color: var(--cutta-ink); }
.c-tabs__indicator {
  position: absolute; bottom: -1px;
  height: 2px;
  background: var(--cutta-accent);
  border-radius: var(--cutta-radius-pill) var(--cutta-radius-pill) 0 0;
  transition:
    left var(--cutta-dur-medium) var(--cutta-ease-out),
    width var(--cutta-dur-medium) var(--cutta-ease-out);
}

/* ─────────────────────────────────────────────────────────────────────
 * MODAL / DRAWER
 * ───────────────────────────────────────────────────────────────────── */
.c-overlay {
  position: fixed; inset: 0;
  background: var(--cutta-overlay-bg);
  backdrop-filter: var(--cutta-backdrop-blur);
  z-index: var(--cutta-z-overlay);
  opacity: 0; pointer-events: none;
  transition: opacity var(--cutta-dur-medium) var(--cutta-ease-out);
}
.c-overlay.is-open { opacity: 1; pointer-events: auto; }

.c-modal {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.96);
  z-index: var(--cutta-z-modal);
  background: var(--cutta-bg-1);
  border: 1px solid var(--cutta-line-2);
  border-radius: var(--cutta-radius-xl);
  box-shadow: var(--cutta-shadow-xl);
  width: min(560px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  overflow: hidden;
  opacity: 0; pointer-events: none;
  transition:
    opacity var(--cutta-dur-medium) var(--cutta-ease-out),
    transform var(--cutta-dur-medium) var(--cutta-ease-spring);
}
.c-modal.is-open { opacity: 1; pointer-events: auto; transform: translate(-50%, -50%) scale(1); }

.c-drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(480px, 100vw);
  background: var(--cutta-bg-1);
  border-left: 1px solid var(--cutta-line-2);
  box-shadow: var(--cutta-shadow-xl);
  z-index: var(--cutta-z-modal);
  transform: translateX(100%);
  transition: transform var(--cutta-dur-medium) var(--cutta-ease-out);
  display: flex; flex-direction: column;
}
.c-drawer.is-open { transform: translateX(0); }

/* ─── Defensive: nail the default-hidden state with !important so any
 *     ancestor animation rule (e.g. page-enter fade) cannot accidentally
 *     bleed transform/opacity onto these components. */
.c-overlay:not(.is-open) {
  opacity: 0 !important;
  pointer-events: none !important;
  /* Chrome/Safari composite the backdrop-filter even at opacity:0 — the
     blur still bleeds onto siblings. Strip it explicitly when not open. */
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  background: transparent !important;
}
.c-modal:not(.is-open) {
  opacity: 0 !important;
  pointer-events: none !important;
  transform: translate(-50%, -50%) scale(0.96) !important;
}
.c-drawer:not(.is-open) {
  transform: translateX(100%) !important;
  pointer-events: none !important;
}

/* Body scroll lock: applied by cuttaUi.modalOpen/drawerOpen, removed by close. */
body.cutta-modal-open { overflow: hidden; }

.c-drawer__head {
  padding: var(--cutta-space-4) var(--cutta-space-5);
  border-bottom: 1px solid var(--cutta-line);
  display: flex; align-items: center; justify-content: space-between;
}
.c-drawer__body { flex: 1; overflow-y: auto; padding: var(--cutta-space-5); }

/* ─────────────────────────────────────────────────────────────────────
 * SECTION HEADER (page-level)
 * ───────────────────────────────────────────────────────────────────── */
.c-section-h {
  display: flex; align-items: flex-end; justify-content: space-between; gap: var(--cutta-space-4);
  margin-bottom: var(--cutta-space-5);
}
.c-section-h__title {
  font-size: var(--cutta-text-xl);
  font-weight: var(--cutta-weight-semibold);
  letter-spacing: -0.005em;
}
.c-section-h__sub { font-size: var(--cutta-text-sm); color: var(--cutta-ink-3); margin-top: 2px; }

/* ─────────────────────────────────────────────────────────────────────
 * LAYOUT primitives
 * ───────────────────────────────────────────────────────────────────── */
.c-stack { display: flex; flex-direction: column; }
.c-stack--2 > * + * { margin-top: var(--cutta-space-2); }
.c-stack--3 > * + * { margin-top: var(--cutta-space-3); }
.c-stack--4 > * + * { margin-top: var(--cutta-space-4); }
.c-stack--6 > * + * { margin-top: var(--cutta-space-6); }
.c-stack--8 > * + * { margin-top: var(--cutta-space-8); }

.c-row { display: flex; align-items: center; gap: var(--cutta-space-3); }
.c-row--between { justify-content: space-between; }
.c-row--end { justify-content: flex-end; }
.c-row--wrap { flex-wrap: wrap; }
.c-row--gap-2 { gap: var(--cutta-space-2); }
.c-row--gap-4 { gap: var(--cutta-space-4); }

.c-grid { display: grid; gap: var(--cutta-space-4); }
.c-grid--2 { grid-template-columns: repeat(2, 1fr); }
.c-grid--3 { grid-template-columns: repeat(3, 1fr); }
.c-grid--4 { grid-template-columns: repeat(4, 1fr); }
.c-grid--auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

@media (max-width: 1024px) {
  .c-grid--3, .c-grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .c-grid--2, .c-grid--3, .c-grid--4 { grid-template-columns: 1fr; }
}

/* ─────────────────────────────────────────────────────────────────────
 * APP SHELL: topbar
 * ───────────────────────────────────────────────────────────────────── */
.c-topbar {
  position: sticky; top: 0;
  z-index: var(--cutta-z-sticky);
  background: color-mix(in oklab, var(--cutta-bg) 80%, transparent);
  -webkit-backdrop-filter: var(--cutta-backdrop-blur);
  backdrop-filter: var(--cutta-backdrop-blur);
  border-bottom: 1px solid var(--cutta-line);
  padding: var(--cutta-space-3) var(--cutta-space-6);
  display: flex; align-items: center; gap: var(--cutta-space-5);
}
.c-topbar__brand {
  display: inline-flex; align-items: center; gap: var(--cutta-space-2);
  font-weight: var(--cutta-weight-semibold);
  font-size: var(--cutta-text-md);
  letter-spacing: -0.01em;
}
.c-topbar__logo {
  width: 26px; height: 26px;
  border-radius: var(--cutta-radius-md);
  background: linear-gradient(135deg, var(--cutta-accent), var(--cutta-accent-strong));
  color: var(--cutta-accent-ink);
  display: grid; place-items: center;
  font-family: var(--cutta-font-display);
  font-weight: var(--cutta-weight-medium);
  font-size: 14px;
  box-shadow: var(--cutta-shadow-sm);
}
.c-topbar__nav { display: flex; align-items: center; gap: var(--cutta-space-1); margin-left: var(--cutta-space-4); }
.c-topbar__nav a {
  position: relative;
  padding: 6px var(--cutta-space-3);
  border-radius: var(--cutta-radius-md);
  font-size: var(--cutta-text-sm);
  color: var(--cutta-ink-3);
  transition: color var(--cutta-dur-micro), background-color var(--cutta-dur-micro);
}
.c-topbar__nav a:hover { color: var(--cutta-ink); background: var(--cutta-bg-2); }
.c-topbar__nav a.is-active { color: var(--cutta-ink); background: var(--cutta-bg-2); }
.c-topbar__spacer { flex: 1; }
.c-topbar__actions { display: flex; align-items: center; gap: var(--cutta-space-2); }

/* ─────────────────────────────────────────────────────────────────────
 * MAIN CONTAINER
 * ───────────────────────────────────────────────────────────────────── */
.c-main {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--cutta-space-8) var(--cutta-space-6) var(--cutta-space-16);
}
@media (max-width: 768px) {
  .c-main { padding: var(--cutta-space-5) var(--cutta-space-4) var(--cutta-space-10); }
}

.c-page-h { margin-bottom: var(--cutta-space-6); }
.c-page-h__crumb {
  font-size: var(--cutta-text-xs);
  color: var(--cutta-ink-3);
  text-transform: uppercase;
  letter-spacing: var(--cutta-tracking-uppercase);
  margin-bottom: var(--cutta-space-2);
}
.c-page-h__title {
  font-family: var(--cutta-font-display);
  font-size: var(--cutta-text-3xl);
  font-weight: var(--cutta-weight-medium);
  letter-spacing: var(--cutta-tracking-display);
  line-height: var(--cutta-leading-snug);
}
.c-page-h__sub {
  font-size: var(--cutta-text-sm);
  color: var(--cutta-ink-3);
  margin-top: var(--cutta-space-2);
  max-width: 56ch;
  line-height: var(--cutta-leading-base);
}

/* ─────────────────────────────────────────────────────────────────────
 * STATUS DOT (live indicator)
 * ───────────────────────────────────────────────────────────────────── */
.c-dot {
  display: inline-block; width: 6px; height: 6px;
  border-radius: var(--cutta-radius-pill);
  background: var(--cutta-success);
  position: relative;
  box-shadow: 0 0 0 0 var(--cutta-success);
  animation: cutta-pulse 2.4s ease-in-out infinite;
}

/* ─────────────────────────────────────────────────────────────────────
 * UTILITY: tooltip (data-tip)
 * ───────────────────────────────────────────────────────────────────── */
[data-tip] { position: relative; }
[data-tip]::after {
  content: attr(data-tip);
  position: absolute; bottom: calc(100% + 6px); left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 4px 8px;
  font-size: var(--cutta-text-xs);
  font-weight: var(--cutta-weight-medium);
  color: var(--cutta-ink);
  background: var(--cutta-bg-3);
  border: 1px solid var(--cutta-line-2);
  border-radius: var(--cutta-radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--cutta-dur-short), transform var(--cutta-dur-short) var(--cutta-ease-out);
  z-index: var(--cutta-z-overlay);
}
[data-tip]:hover::after { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ─────────────────────────────────────────────────────────────────────
 * UTILITY: inline spinner (used in buttons during async actions)
 * ───────────────────────────────────────────────────────────────────── */
.c-spin {
  display: inline-block;
  width: 12px; height: 12px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  vertical-align: -2px;
  margin-right: 6px;
  animation: cutta-spin 0.7s linear infinite;
}
@keyframes cutta-spin { to { transform: rotate(360deg); } }

/* R20c-1 — auto-mounted theme-toggle button. Module: js/cutta-ui.js
   autoMountThemeToggle(). Show sun in dark mode (click → light) and moon in
   light mode (click → dark). */
.cutta-theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--cutta-line, rgba(255,255,255,.1));
  border-radius: 8px;
  color: var(--cutta-ink, #FAFAFA);
  cursor: pointer;
  transition: all .15s ease;
  padding: 0;
}
.cutta-theme-toggle:hover {
  border-color: var(--cutta-accent, #D5604A);
  color: var(--cutta-accent, #D5604A);
}
.cutta-theme-toggle .cutta-tt-sun,
.cutta-theme-toggle .cutta-tt-moon { display: none; line-height: 0; }
html[data-theme="dark"] .cutta-theme-toggle .cutta-tt-sun { display: inline-flex; }
html[data-theme="light"] .cutta-theme-toggle .cutta-tt-moon { display: inline-flex; }

/* === R21-S1-batch2 — 共享 drawer 组件 === */
.c-drawer__overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 9998;
  opacity: 0;
  transition: opacity 180ms var(--cutta-ease-out, ease-out);
}
.c-drawer__overlay.is-open { opacity: 1; }
.c-drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(480px, 92vw);
  background: var(--cutta-bg-1, #1a1a1a);
  border-left: 1px solid var(--cutta-line, rgba(255,255,255,.1));
  box-shadow: -8px 0 32px rgba(0,0,0,.4);
  z-index: 9999;
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform 220ms var(--cutta-ease-out, cubic-bezier(.2,.8,.2,1));
}
.c-drawer.is-open { transform: translateX(0); }
.c-drawer--wide { width: min(680px, 96vw); }
.c-drawer__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--cutta-line, rgba(255,255,255,.08));
  flex: 0 0 auto;
}
.c-drawer__title {
  font-size: 17px; font-weight: 600;
  color: var(--cutta-ink, #fafafa);
  margin: 0;
}
.c-drawer__close {
  background: transparent; border: 0;
  color: var(--cutta-ink-3, #888);
  font-size: 22px; line-height: 1;
  cursor: pointer; padding: 4px 8px;
  border-radius: 6px;
  transition: all 120ms var(--cutta-ease-out, ease-out);
}
.c-drawer__close:hover {
  background: rgba(255,255,255,.06);
  color: var(--cutta-ink, #fafafa);
}
.c-drawer__body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 20px 24px;
}
.c-drawer__foot {
  flex: 0 0 auto;
  padding: 14px 24px;
  border-top: 1px solid var(--cutta-line, rgba(255,255,255,.08));
  display: flex; justify-content: flex-end; gap: 10px;
  background: rgba(0,0,0,.15);
}

/* === R21-S1-batch2 — FAB(浮动新建按钮)=== */
.c-fab {
  position: fixed;
  right: 28px; bottom: 28px;
  z-index: 900;
  display: inline-flex; align-items: center; gap: 8px;
  height: 52px; min-width: 52px;
  padding: 0 20px 0 18px;
  border-radius: 26px;
  background: var(--cutta-accent, #D5604A);
  color: #fff;
  font-size: 14px; font-weight: 600;
  border: 0;
  box-shadow: 0 8px 24px rgba(213,96,74,.35), 0 2px 6px rgba(0,0,0,.3);
  cursor: pointer;
  transition: transform 140ms var(--cutta-ease-out, ease-out), box-shadow 140ms;
}
.c-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(213,96,74,.45), 0 4px 10px rgba(0,0,0,.35);
}
.c-fab:active { transform: translateY(0); }
.c-fab__icon { font-size: 20px; line-height: 1; font-weight: 400; }
.c-fab--label { font-size: 14px; }

/* === R21-S1-batch2 — 时间维度 chip tabs === */
.c-time-tabs {
  display: inline-flex; gap: 6px;
  padding: 4px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--cutta-line, rgba(255,255,255,.08));
  border-radius: 10px;
}
.c-time-tabs__btn {
  background: transparent; border: 0;
  padding: 6px 14px;
  border-radius: 7px;
  font-size: 13px; font-weight: 500;
  color: var(--cutta-ink-3, #888);
  cursor: pointer;
  transition: all 140ms var(--cutta-ease-out, ease-out);
}
.c-time-tabs__btn:hover { color: var(--cutta-ink, #fafafa); }
.c-time-tabs__btn.is-active {
  background: var(--cutta-accent, #D5604A);
  color: #fff;
}