/* Rhythms editor — 5d.4b
   Sits on top of style.css. Uses the same design tokens, editorial dark palette,
   and Instrument Serif / Inter / JetBrains Mono pairing. */

/* Brand link (masthead) — anchor wrapper around the mark + text */
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: inherit;
  text-decoration: none;
}
.brand-link:hover { color: inherit; text-decoration: none; }
.brand-link:hover .brand-name { color: var(--color-primary); }

/* Back link in masthead actions */
.rh-back-link {
  padding: 6px 10px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  border: 1px solid transparent;
  transition: color 160ms, border-color 160ms;
}
.rh-back-link:hover {
  color: var(--color-text);
  border-color: var(--color-border);
  text-decoration: none;
}

/* Page header */
.rh-page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
  margin: var(--space-8) 0 var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.rh-page-title {
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.rh-page-lede {
  color: var(--color-text-muted);
  max-width: 68ch;
  line-height: 1.55;
}
.rh-page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Auth gate */
.rh-auth-gate {
  padding: var(--space-8) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  margin-bottom: var(--space-6);
}
.rh-auth-icon {
  display: inline-flex;
  padding: var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.rh-auth-gate h2 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}
.rh-auth-gate p {
  color: var(--color-text-muted);
  max-width: 48ch;
  margin: 0 auto;
}

/* Rhythms list */
.rh-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* Skeleton */
.rh-skel { display: flex; flex-direction: column; gap: var(--space-6); }
.rh-skel-card {
  height: 260px;
  background: linear-gradient(90deg,
    var(--color-surface) 0%,
    var(--color-surface-2) 50%,
    var(--color-surface) 100%);
  background-size: 200% 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  animation: rh-shimmer 1.6s infinite ease-in-out;
}
@keyframes rh-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Rhythm card */
.rh-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 200ms, box-shadow 200ms;
}
.rh-card.is-active {
  border-color: color-mix(in oklab, var(--color-primary) 55%, var(--color-border));
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--color-primary) 20%, transparent);
}

/* Card header */
.rh-card-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
  flex-wrap: wrap;
}
.rh-card-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1 1 auto;
  min-width: 0;
}
.rh-card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.rh-card-title[contenteditable="true"] {
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  outline: 1px dashed color-mix(in oklab, var(--color-primary) 45%, transparent);
  outline-offset: 2px;
  background: var(--color-surface-2);
  cursor: text;
  white-space: normal;
}
.rh-card-title[contenteditable="true"]:focus {
  outline: 2px solid var(--color-primary);
}

/* Badges */
.rh-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  border: 1px solid transparent;
  white-space: nowrap;
}
.rh-badge.is-builtin {
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.rh-badge.is-active {
  background: color-mix(in oklab, var(--color-primary) 18%, transparent);
  color: var(--color-primary);
  border-color: color-mix(in oklab, var(--color-primary) 45%, transparent);
}
.rh-badge.is-inactive {
  background: transparent;
  color: var(--color-text-faint);
  border-color: var(--color-border);
}

/* Card actions (right side of head) */
.rh-card-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
}
.rh-btn {
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background 160ms, border-color 160ms, color 160ms;
}
.rh-btn:hover:not(:disabled) {
  background: var(--color-surface-offset);
  border-color: color-mix(in oklab, var(--color-primary) 40%, var(--color-border));
}
.rh-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.rh-btn.rh-btn-primary {
  background: color-mix(in oklab, var(--color-primary) 15%, var(--color-surface-2));
  border-color: color-mix(in oklab, var(--color-primary) 45%, transparent);
  color: var(--color-primary);
}
.rh-btn.rh-btn-primary:hover:not(:disabled) {
  background: color-mix(in oklab, var(--color-primary) 25%, var(--color-surface-2));
  border-color: var(--color-primary);
}
.rh-btn.rh-btn-danger {
  color: #e08a7c;
  border-color: color-mix(in oklab, #e08a7c 30%, var(--color-border));
}
.rh-btn.rh-btn-danger:hover:not(:disabled) {
  background: color-mix(in oklab, #e08a7c 12%, var(--color-surface-2));
  border-color: #e08a7c;
}

/* Tabs (day_type) */
.rh-tabs {
  display: flex;
  gap: 0;
  padding: 0 var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
  overflow-x: auto;
}
.rh-tab {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  transition: color 160ms, border-color 160ms;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.rh-tab:hover { color: var(--color-text); }
.rh-tab.is-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.rh-tab-count {
  padding: 1px 6px;
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-faint);
  font-size: 10px;
  font-weight: 600;
}
.rh-tab.is-active .rh-tab-count {
  background: color-mix(in oklab, var(--color-primary) 20%, transparent);
  color: var(--color-primary);
}

/* Tab panel */
.rh-tab-panel {
  padding: var(--space-5) var(--space-6);
}
.rh-tab-panel[hidden] { display: none; }

/* Empty state (fallback message) */
.rh-empty-fallback {
  padding: var(--space-5);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.55;
  margin-bottom: var(--space-4);
}
.rh-empty-fallback strong { color: var(--color-text); font-weight: 600; }
.rh-empty-fallback code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 1px 5px;
  border-radius: 3px;
  background: var(--color-surface-offset);
  color: var(--color-primary);
}

/* Slot list */
.rh-slot-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  min-height: 8px;
}
.rh-slot-list.rh-sortable-active {
  padding: var(--space-2);
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
}

/* Slot row */
.rh-slot {
  display: grid;
  grid-template-columns: auto minmax(0, 1.5fr) minmax(120px, 1fr) auto auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 160ms, box-shadow 160ms, background 160ms;
}
.rh-slot.is-dirty {
  border-color: color-mix(in oklab, var(--color-primary) 55%, transparent);
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--color-primary) 20%, transparent);
}
.rh-slot.sortable-ghost {
  opacity: 0.35;
  background: var(--color-surface-offset);
}
.rh-slot.sortable-chosen { cursor: grabbing; }
.rh-slot-handle {
  color: var(--color-text-faint);
  cursor: grab;
  padding: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  touch-action: none; /* let SortableJS handle touch */
}
.rh-slot-handle:hover { color: var(--color-primary); }
.rh-slot-handle:active { cursor: grabbing; }

.rh-slot-name-input,
.rh-slot-min-input,
.rh-slot-intent-select {
  width: 100%;
  padding: 6px 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  transition: border-color 160ms;
}
.rh-slot-name-input:focus,
.rh-slot-min-input:focus,
.rh-slot-intent-select:focus {
  outline: none;
  border-color: var(--color-primary);
}
.rh-slot-intent-select {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: lowercase;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23a89b81' d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 26px;
}
.rh-slot-min {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}
.rh-slot-min-input {
  width: 68px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}
.rh-slot-min-suffix { color: var(--color-text-faint); }

.rh-slot-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.rh-icon-btn {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  transition: background 160ms, color 160ms, border-color 160ms;
}
.rh-icon-btn:hover:not(:disabled) {
  background: var(--color-surface-offset);
  color: var(--color-text);
  border-color: color-mix(in oklab, var(--color-primary) 30%, var(--color-border));
}
.rh-icon-btn.rh-icon-btn-primary {
  background: color-mix(in oklab, var(--color-primary) 20%, var(--color-surface));
  color: var(--color-primary);
  border-color: color-mix(in oklab, var(--color-primary) 45%, transparent);
}
.rh-icon-btn.rh-icon-btn-primary:hover:not(:disabled) {
  background: color-mix(in oklab, var(--color-primary) 30%, var(--color-surface));
  border-color: var(--color-primary);
}
.rh-icon-btn.rh-icon-btn-danger:hover:not(:disabled) {
  background: color-mix(in oklab, #e08a7c 12%, var(--color-surface));
  color: #e08a7c;
  border-color: color-mix(in oklab, #e08a7c 40%, transparent);
}
.rh-icon-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.rh-icon-btn svg { width: 14px; height: 14px; }

/* Add slot */
.rh-add-slot-row {
  display: flex;
  justify-content: flex-start;
}
.rh-add-slot-btn {
  padding: 8px 14px;
  border-radius: var(--radius-md);
  border: 1px dashed color-mix(in oklab, var(--color-primary) 40%, var(--color-border));
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  transition: background 160ms, border-color 160ms;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.rh-add-slot-btn:hover:not(:disabled) {
  background: color-mix(in oklab, var(--color-primary) 10%, transparent);
  border-style: solid;
}
.rh-add-slot-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Empty slot list (variant genuinely has zero slots and user is signed in) */
.rh-slot-empty {
  padding: var(--space-4);
  text-align: center;
  color: var(--color-text-faint);
  font-size: var(--text-sm);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
}

/* Card total footer */
.rh-card-foot {
  padding: var(--space-3) var(--space-6);
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
}

/* Toast */
.rh-toast {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1), opacity 200ms;
  z-index: 100;
  pointer-events: none;
  max-width: 90vw;
}
.rh-toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.rh-toast.is-error {
  border-color: #e08a7c;
  color: #e08a7c;
}
.rh-toast.is-success {
  border-color: color-mix(in oklab, var(--color-primary) 50%, transparent);
}

/* Site footer */
.site-foot {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  text-align: center;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

/* Mobile */
@media (max-width: 720px) {
  .rh-page-head {
    flex-direction: column;
    gap: var(--space-4);
  }
  .rh-card-head {
    padding: var(--space-4);
  }
  .rh-tabs {
    padding: 0 var(--space-4);
  }
  .rh-tab-panel {
    padding: var(--space-4);
  }
  .rh-slot {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas:
      "handle name       actions"
      "intent intent     intent"
      "min    min        min";
    gap: var(--space-2);
  }
  .rh-slot-handle { grid-area: handle; }
  .rh-slot-name-wrap { grid-area: name; min-width: 0; }
  .rh-slot-intent-wrap { grid-area: intent; }
  .rh-slot-min-wrap { grid-area: min; justify-self: start; }
  .rh-slot-actions { grid-area: actions; }
  .rh-back-link { display: none; }
}