/*
 * MuseHub Component Classes
 *
 * Reusable UI components built on top of the design tokens in tokens.css.
 * Every selector here uses var(--*) tokens exclusively — no hardcoded colors.
 *
 * Component inventory:
 *   Base reset, body
 *   Links
 *   Badges            (.badge, .badge-open/closed/merged/clean/dirty/active)
 *   Buttons           (.btn, .btn-primary/danger/secondary/ghost)
 *   Cards             (.card, .artifact-card)
 *   Tables            (.table)
 *   Forms             (.form-group, .form-label, .form-input, .form-select, .form-hint)
 *   Token form        (.token-form)
 *   Grids             (.grid-auto, .grid-2, .grid-3, .artifact-grid)
 *   Modals            (.modal, .modal-backdrop, .modal-panel, .modal-header, .modal-footer)
 *   Tabs              (.tabs, .tab-list, .tab, .tab-panel)
 *   Tooltips          (.tooltip, [data-tooltip])
 *   Rows              (.commit-row, .proposal-row, .issue-row, .session-row, .session-row-active)
 *   Session enrichment(.session-row-header, .session-row-intent, .session-notes-preview,
 *                       .session-row-participants, .participant-stack, .participant-avatar,
 *                       .participant-overflow, .session-no-participants,
 *                       .session-commit-pill, .session-location-tag)
 *   Meta rows         (.meta-row, .meta-item, .meta-label, .meta-value)
 *   Misc utilities    (.loading, .error, .empty-state, .session-live, .session-live-pulse)
 *   Code blocks       (pre, code)
 *   Labels            (.label, .label-*)
 */

/* -------------------------------------------------------------------------
 * Base reset
 * ------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  background-color: var(--bg-base);
  color: var(--text-secondary);
  min-height: 100vh;
}

/* -------------------------------------------------------------------------
 * Links
 * ------------------------------------------------------------------------- */
a {
  color: var(--color-accent-link);
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

/* -------------------------------------------------------------------------
 * Headings
 * ------------------------------------------------------------------------- */
h1 {
  font-size: 26px;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

h2 {
  font-size: 20px;
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.3px;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

h3 {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

/* -------------------------------------------------------------------------
 * Badges
 * ------------------------------------------------------------------------- */
.badge {
  display: inline-block;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.badge-open    { background: var(--color-accent-muted);  color: var(--text-primary); }
.badge-closed  { background: var(--color-neutral);       color: var(--text-primary); }
.badge-merged  { background: var(--color-purple-bg);     color: var(--text-primary); }
.badge-active  { background: var(--color-success-bg);    color: var(--text-primary); }
.badge-clean   { background: var(--color-success-bg);    color: var(--text-primary); }
.badge-dirty   { background: var(--color-warning-bg);    color: var(--text-primary); }
.badge-error   { background: var(--color-danger-bg);     color: var(--text-primary); }
.badge-dim-harmonic  { background: var(--dim-harmonic-muted);  color: var(--text-primary); }
.badge-dim-rhythmic  { background: var(--dim-rhythmic-muted);  color: var(--text-primary); }
.badge-dim-melodic   { background: var(--dim-melodic-muted);   color: var(--text-primary); }
.badge-dim-structural{ background: var(--dim-structural-muted);color: var(--text-primary); }
.badge-dim-dynamic   { background: var(--dim-dynamic-muted);   color: var(--text-primary); }

/* -------------------------------------------------------------------------
 * Buttons
 * ------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px var(--space-4);
  border-radius: var(--radius-base);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast),
              box-shadow var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  letter-spacing: 0;

  svg { flex-shrink: 0; }
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);

  &:not(:disabled):hover {
    opacity: 0.88;
    transform: translateY(-1px);
    text-decoration: none;
  }
}

.btn-create {
  background: var(--color-success-bg);
  color: #fff;
  border-color: var(--color-success-bg);

  &:not(:disabled):hover {
    background: var(--color-success);
    border-color: var(--color-success);
    text-decoration: none;
  }
}

.btn-danger {
  background: var(--color-danger-bg);
  color: #fff;
  border-color: var(--color-danger-bg);

  &:not(:disabled):hover {
    background: var(--color-danger);
    border-color: var(--color-danger);
    text-decoration: none;
  }
}

.btn-secondary {
  background: var(--bg-overlay);
  color: var(--text-secondary);
  border-color: var(--border-default);

  &:not(:disabled):hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-muted);
    text-decoration: none;
  }
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-default);

  &:not(:disabled):hover {
    background: var(--bg-overlay);
    color: var(--text-primary);
    text-decoration: none;
  }
}

.btn-accent {
  background: var(--color-accent-muted);
  color: var(--text-primary);
  border-color: var(--color-accent-muted);

  &:not(:disabled):hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    text-decoration: none;
  }
}

.btn-sm {
  padding: 4px var(--space-3);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

/* -------------------------------------------------------------------------
 * Cards
 * ------------------------------------------------------------------------- */
.card {
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
}

.artifact-card {
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.artifact-card img {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-default);
}

.artifact-card audio {
  width: 100%;
}

.artifact-card .path {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  word-break: break-all;
}

/* -------------------------------------------------------------------------
 * Repo card grid (explore page)
 * ------------------------------------------------------------------------- */
.repo-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.repo-card {
  position: relative;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: inherit;

  &:hover {
    border-color: var(--border-default);
    background: rgba(255,255,255,0.02);
    text-decoration: none;
    color: inherit;
  }
}

.repo-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.repo-card-name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.repo-card-sep {
  color: var(--text-muted);
  font-weight: var(--font-weight-regular);
  margin: 0 1px;
}

.repo-card-desc {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  line-height: var(--line-height-relaxed);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.repo-card-pills {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-top: var(--space-1);
}

.repo-meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--bg-overlay);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(79, 142, 247, 0.08);
  color: var(--color-accent-link);
  border: 1px solid rgba(79, 142, 247, 0.25);
}

.tag-pill-more {
  opacity: 0.6;
}

.repo-card-footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: 1px solid var(--border-subtle);
}

.repo-card-stat {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  color: var(--text-muted);

  svg { opacity: 0.7; }
}

/* -------------------------------------------------------------------------
 * Tables
 * ------------------------------------------------------------------------- */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-base);
}

.table th {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-default);
}

.table td {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover td {
  background: var(--bg-overlay);
}

/* -------------------------------------------------------------------------
 * Forms
 * ------------------------------------------------------------------------- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
}

.form-input,
.form-select,
select,
input[type="text"],
input[type="password"],
input[type="email"],
input[type="search"],
textarea {
  background: var(--bg-base);
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  width: 100%;
  transition: border-color var(--transition-base);
}

.form-input:focus,
.form-select:focus,
select:focus,
input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="search"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* Token authentication form */
.token-form {
  background: var(--bg-surface);
  border: 1px solid var(--color-orange);
  border-radius: var(--radius-base);
  padding: var(--space-4);
  margin-bottom: var(--space-5);
}

.token-form p {
  font-size: var(--font-size-base);
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

/* -------------------------------------------------------------------------
 * Grids
 * ------------------------------------------------------------------------- */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-3);
}

.artifact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-3);
}

/* -------------------------------------------------------------------------
 * Modals
 * ------------------------------------------------------------------------- */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
}

.modal.is-open {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: var(--z-overlay);
}

.modal-panel {
  position: relative;
  z-index: var(--z-modal);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  padding: var(--space-6);
  max-width: 560px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.modal-footer {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-default);
}

/* -------------------------------------------------------------------------
 * Tabs
 * ------------------------------------------------------------------------- */
.tabs {
  margin-bottom: var(--space-4);
}

.tab-list {
  display: flex;
  border-bottom: 1px solid var(--border-default);
  gap: 0;
  list-style: none;
}

.tab {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition-base), border-color var(--transition-base);
  white-space: nowrap;
}

.tab:hover {
  color: var(--text-primary);
}

.tab.is-active {
  color: var(--text-primary);
  border-bottom-color: var(--color-accent);
}

.tab-panel {
  display: none;
  padding-top: var(--space-4);
}

.tab-panel.is-active {
  display: block;
}

/* -------------------------------------------------------------------------
 * Tooltips (CSS-only via data-tooltip attribute)
 * ------------------------------------------------------------------------- */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + var(--space-1));
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-overlay);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 4px var(--space-2);
  font-size: var(--font-size-xs);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: var(--z-tooltip);
  box-shadow: var(--shadow-md);
}

[data-tooltip]:hover::after {
  opacity: 1;
}

/* Explicit .tooltip class for programmatic usage */
.tooltip {
  position: relative;
}

/* -------------------------------------------------------------------------
 * List rows — commits, proposals, issues, sessions
 * ------------------------------------------------------------------------- */
.commit-row,
.proposal-row,
.issue-row,
.session-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.commit-row:last-child,
.proposal-row:last-child,
.issue-row:last-child,
.session-row:last-child {
  border-bottom: none;
}

.commit-sha {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  white-space: nowrap;
}

.commit-msg {
  flex: 1;
  font-size: var(--font-size-base);
}

.commit-meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  white-space: nowrap;
}

/* Live session indicator */
.session-live {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-success);
  box-shadow: 0 0 6px var(--color-success);
  margin-right: var(--space-1);
  vertical-align: middle;
  flex-shrink: 0;
}

/* Pulsing animation for active sessions */
@keyframes session-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 6px var(--color-success); }
  50%       { opacity: 0.55; box-shadow: 0 0 12px var(--color-success); }
}
.session-live-pulse {
  animation: session-pulse 1.6s ease-in-out infinite;
}

/* Active session row highlight */
.session-row-active {
  background: color-mix(in srgb, var(--color-success) 4%, transparent);
  border-radius: var(--radius-sm);
  padding-left: var(--space-2);
  padding-right: var(--space-2);
}

/* Session row header line */
.session-row-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 4px;
}

/* Intent line */
.session-row-intent {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Notes preview — one-line subtitle below intent */
.session-notes-preview {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 600px;
  font-style: italic;
}

/* Participant avatars row */
.session-row-participants {
  margin-top: 6px;
}

/* Stacked participant avatar circles */
.participant-stack {
  display: flex;
  align-items: center;
}

.participant-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  color: #fff;
  text-decoration: none;
  border: 2px solid var(--bg-card);
  margin-left: -6px;
  transition: transform 0.15s ease, z-index 0s;
  flex-shrink: 0;
}

.participant-avatar:first-child {
  margin-left: 0;
}

.participant-avatar:hover {
  transform: translateY(-2px);
  text-decoration: none;
}

/* "+N more" overflow pill */
.participant-overflow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 26px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  color: var(--text-muted);
  background: var(--bg-overlay);
  border: 2px solid var(--bg-card);
  margin-left: -6px;
  white-space: nowrap;
}

/* Empty participant placeholder */
.session-no-participants {
  color: var(--text-muted);
  font-size: 13px;
}

/* Commit count pill */
.session-commit-pill {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  background: var(--bg-overlay);
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Location tag */
.session-location-tag {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  white-space: nowrap;
}

/* -------------------------------------------------------------------------
 * Metadata rows (key-value pairs, e.g. commit detail sidebar)
 * ------------------------------------------------------------------------- */
.meta-row {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.meta-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.meta-value {
  font-size: var(--font-size-base);
  color: var(--text-primary);
}

/* -------------------------------------------------------------------------
 * Labels (issue/proposal taxonomy labels, similar to GitHub labels)
 * ------------------------------------------------------------------------- */
.label {
  display: inline-block;
  padding: 1px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  background: var(--bg-hover);
  color: var(--text-secondary);
  margin: 2px;
}

/* Branch indicator pill — from_branch / to_branch on proposal rows */
.branch-pill {
  display: inline-block;
  padding: 1px var(--space-2);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--bg-overlay);
  color: var(--color-accent);
  border: 1px solid var(--border-subtle);
  white-space: nowrap;
  overflow: hidden;
  max-width: 200px;
  text-overflow: ellipsis;
}

/* Clickable label pill for client-side filtering */
.label-pill {
  transition: opacity 0.1s, outline 0.1s;
}

.label-pill:hover {
  opacity: 0.8;
  outline: 1px solid var(--color-accent);
}

/* Active (selected) label filter pill */
.label-active {
  outline: 2px solid var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 15%, var(--bg-hover));
  color: var(--color-accent);
}

/* -------------------------------------------------------------------------
 * Issue body preview (subtitle line under issue title)
 * ------------------------------------------------------------------------- */
.issue-preview {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* -------------------------------------------------------------------------
 * Open/Closed tabs and sort buttons for issue list page
 * ------------------------------------------------------------------------- */
.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.tab-active {
  color: var(--text-primary);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}

.tab-count {
  display: inline-block;
  background: var(--bg-hover);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  padding: 0 6px;
  margin-left: 4px;
  color: var(--text-muted);
}

.sort-btn {
  font-size: var(--font-size-xs);
  padding: 2px var(--space-2);
}

.sort-btn.sort-active {
  color: var(--text-primary);
  font-weight: 600;
}

/* -------------------------------------------------------------------------
 * Code blocks
 * ------------------------------------------------------------------------- */
pre {
  background: var(--code-output-bg);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  padding: var(--space-3);
  font-size: 13px;
  font-family: var(--font-mono);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: #abb2bf;
  line-height: 1.65;
}

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-overlay);
  border: 1px solid var(--border-subtle);
  padding: 1px 6px;
  border-radius: 4px;
}

pre code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

/* -------------------------------------------------------------------------
 * State / feedback
 * ------------------------------------------------------------------------- */
.loading {
  color: var(--text-muted);
  font-size: var(--font-size-base);
}

.error {
  color: var(--color-danger);
  font-size: var(--font-size-base);
  margin: var(--space-2) 0;
}

.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
  font-size: var(--font-size-base);
}

.empty-state .empty-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--bg-overlay);
  border: 1px solid var(--border-subtle);
  margin: 0 auto var(--space-4);
  color: var(--text-muted);

  svg, i[data-lucide] {
    width: 24px;
    height: 24px;
    stroke: currentColor;
  }
}

.empty-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.empty-desc {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-5);
  max-width: 360px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--line-height-relaxed);
}

/* -------------------------------------------------------------------------
 * Commit list (repo page)
 * ------------------------------------------------------------------------- */
.commit-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.commit-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.commit-row:last-child { border-bottom: none; }

.commit-sha {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  white-space: nowrap;
}

.commit-msg {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.commit-msg a { color: var(--text-primary); }
.commit-msg a:hover { color: var(--color-accent); text-decoration: none; }

.commit-meta {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* diff view */
.diff-track-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-1);
}

.diff-track-added   { background: rgba(63,185,80,0.1); border-left: 3px solid var(--color-success); }
.diff-track-removed { background: rgba(248,81,73,0.1); border-left: 3px solid var(--color-danger); }
.diff-track-changed { background: rgba(88,166,255,0.1); border-left: 3px solid var(--color-accent); }

.diff-sign {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  width: 20px;
  flex-shrink: 0;
}

.diff-sign-add    { color: var(--color-success); }
.diff-sign-remove { color: var(--color-danger); }
.diff-sign-change { color: var(--color-accent); }

/* insights / analytics */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  padding: var(--space-4);
  text-align: center;
}

.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  display: block;
  line-height: 1.1;
}

.stat-card .stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* contribution heatmap (weekly squares) */
.heatmap-grid {
  display: flex;
  gap: 3px;
  overflow-x: auto;
}

.heatmap-week {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.heatmap-day {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--bg-overlay);
}

.heatmap-day[data-count="0"] { background: var(--bg-overlay); }
.heatmap-day[data-count="1"] { background: var(--dim-rhythmic-muted); }
.heatmap-day[data-count="2"] { background: var(--dim-rhythmic); opacity: 0.6; }
.heatmap-day[data-count="3"] { background: var(--dim-rhythmic); }
.heatmap-day[data-count="4"] { background: var(--color-success); }


/* social / comments */
.comment-thread {
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
}

.comment-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.comment-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  color: var(--text-muted);
}

.comment-body {
  flex: 1;
  min-width: 0;
}

.comment-meta {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.comment-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  white-space: pre-wrap;
}

.comment-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
}

.reactions-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}

.reaction-btn {
  background: var(--bg-overlay);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 2px var(--space-2);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: background var(--transition-fast);
}

.reaction-btn:hover { background: var(--bg-hover); }
.reaction-btn.active { background: var(--color-accent-muted); border-color: var(--color-accent); color: var(--text-primary); }

/* follow button */
.follow-btn {
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  padding: 5px var(--space-4);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.follow-btn.following {
  background: var(--color-success-bg);
  border-color: var(--color-success-bg);
  color: white;
}

/* notification badge */
.notif-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--color-danger);
  color: white;
  font-size: 10px;
  border-radius: var(--radius-full);
  min-width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* ---------------------------------------------------------------------------
 * Analysis dashboard grid
 * Used by analysis.html — 10 dimension summary cards at a glance.
 * --------------------------------------------------------------------------- */
.analysis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
  margin-top: 4px;
}

.analysis-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.15s, background 0.15s;
  color: inherit;
  text-decoration: none;
}

.analysis-card:hover {
  border-color: var(--color-accent);
  background: var(--color-surface-raised);
  text-decoration: none;
}

.card-emoji  { font-size: 22px; }
.card-dim    { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.6px; }
.card-metric { font-size: 18px; font-weight: 700; color: var(--color-text); word-break: break-word; }
.card-sub    { font-size: 12px; color: var(--text-muted); }
.card-spark  { font-size: 14px; color: var(--color-success); letter-spacing: 1px; margin-top: 2px; }

/* waveform placeholder */
.waveform-bar {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 48px;
  overflow: hidden;
}

.waveform-bar .wave-col {
  flex: 1;
  background: var(--color-accent);
  opacity: 0.6;
  border-radius: 2px 2px 0 0;
  min-height: 4px;
  transition: height 0.1s;
}

/* ── Reaction bar ────────────────────────────────────────────────────────── */
.reaction-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: var(--space-3) 0;
}

.reaction-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border: 1px solid var(--border-subtle, rgba(255,255,255,0.12));
  border-radius: 20px;
  background: var(--bg-overlay, rgba(255,255,255,0.05));
  color: var(--text-primary, #e6edf3);
  font-size: 16px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
  line-height: 1;
  user-select: none;
}

.reaction-btn:hover {
  background: var(--bg-raised, rgba(255,255,255,0.1));
  border-color: var(--color-accent, #58a6ff);
  transform: scale(1.08);
}

.reaction-btn--active {
  background: rgba(79, 142, 247, 0.15);
  border-color: var(--color-accent);
}

.reaction-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary, #8b949e);
  min-width: 12px;
}

.reaction-btn--active .reaction-count {
  color: var(--color-accent, #58a6ff);
}

/* ── HTMX loading indicator — managed in _tokens.scss ──────────────────── */

/* =========================================================================
 * Muse protocol design language components
 * ========================================================================= */

/* -------------------------------------------------------------------------
 * Top-accent cards
 * Cards with a 3px colored top border, mirroring the capability showcase
 * cards from the Muse protocol site. Works on top of .card or standalone.
 *
 * Usage: <div class="card card-accent-top">…</div>
 *   or with a specific dimension color:
 *        <div class="card card-accent-harmonic">…</div>
 *
 * The .card-accent-{color} classes also set a matching subtle background
 * tint via a translucent overlay so the color reads without being garish.
 * ------------------------------------------------------------------------- */
.card-accent-top        { border-top: 3px solid var(--color-accent); }
.card-accent-success    { border-top: 3px solid var(--color-success); }
.card-accent-warning    { border-top: 3px solid var(--color-warning); }
.card-accent-danger     { border-top: 3px solid var(--color-danger); }
.card-accent-purple     { border-top: 3px solid var(--color-purple); }
.card-accent-orange     { border-top: 3px solid var(--color-orange); }
.card-accent-harmonic   { border-top: 3px solid var(--dim-harmonic); }
.card-accent-rhythmic   { border-top: 3px solid var(--dim-rhythmic); }
.card-accent-melodic    { border-top: 3px solid var(--dim-melodic); }
.card-accent-structural { border-top: 3px solid var(--dim-structural); }
.card-accent-dynamic    { border-top: 3px solid var(--dim-dynamic); }

/* Hover lift — matches the Muse site card hover transform */
.card-hover {
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);

  &:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
}

/* -------------------------------------------------------------------------
 * CTA button — Muse blue accent, for marketing/landing-style actions.
 * Distinct from .btn-primary (green = create/confirm) which retains its
 * GitHub-inspired semantic meaning.
 * ------------------------------------------------------------------------- */
.btn-cta {
  background: #4f8ef7;
  color: #fff;
  border-color: #4f8ef7;
  font-weight: var(--font-weight-semibold);

  &:not(:disabled):hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    opacity: 0.9;
    transform: translateY(-1px);
    text-decoration: none;
  }
}

/* -------------------------------------------------------------------------
 * Monospaced eyebrow badge — small monospace chip used beside headings,
 * table headers, and capability cards.
 * Usage: <span class="mono-badge">active</span>
 * ------------------------------------------------------------------------- */
.mono-badge {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  padding: 2px var(--space-2);
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-overlay);
  color: var(--text-muted);
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.mono-badge-accent {
  color: var(--color-accent);
  background: rgba(79, 142, 247, 0.08);
  border-color: rgba(79, 142, 247, 0.25);
}

.mono-badge-success {
  color: var(--color-success);
  background: rgba(63, 185, 80, 0.08);
  border-color: rgba(63, 185, 80, 0.25);
}

/* -------------------------------------------------------------------------
 * Ticker / scrolling marquee chip — for domain/tag horizontal scroll strips.
 * Matches the .ticker-item pattern from the Muse protocol hero section.
 * ------------------------------------------------------------------------- */
.ticker-chip {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 4px var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-default);
  white-space: nowrap;
  color: var(--text-muted);
  background: transparent;
  flex-shrink: 0;
}

.ticker-chip.active {
  border-color: rgba(79, 142, 247, 0.5);
  color: var(--color-accent);
  background: rgba(79, 142, 247, 0.08);
}

/* -------------------------------------------------------------------------
 * Stat cells — large number + small label, styled like the protocol stat
 * strip on the Muse site (e.g. "6 methods to implement").
 * Usage: <div class="stat-cell"><span class="stat-num">6</span><span class="stat-lbl">methods</span></div>
 * ------------------------------------------------------------------------- */
.stat-cell-muse {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  text-align: center;
  background: var(--bg-surface);
}

.stat-num-muse {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  line-height: 1.1;
  display: block;
}

.stat-lbl-muse {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: var(--space-1);
  line-height: 1.3;
}

/* -------------------------------------------------------------------------
 * Shared page components — extracted from inline <style> blocks
 * These are used on 2+ pages and must live here so they are available
 * regardless of HTMX navigation direction.
 * ------------------------------------------------------------------------- */

/* ── Sidebar sections (explore, repo_home, issue_list, issue_detail) ────── */
.sidebar-section {
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-default);
}
.sidebar-section:last-child { border-bottom: none; }
.sidebar-section-title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin: 0 0 var(--space-2) 0;
}

/* ── Form fields (new_repo, settings) ───────────────────────────────────── */
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}
.form-label .required { color: #f85149; margin-left: 2px; }
.form-description { font-size: var(--font-size-xs); color: var(--text-muted); margin-bottom: var(--space-2); }
.form-input {
  width: 100%;
  box-sizing: border-box;
  padding: 6px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}
.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-accent) 25%, transparent);
}
.form-checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.form-checkbox-row input[type=checkbox] { margin-top: 2px; flex-shrink: 0; }
.form-checkbox-label { font-size: var(--font-size-sm); font-weight: 600; color: var(--text-primary); }
.form-checkbox-desc  { font-size: var(--font-size-xs); color: var(--text-muted); margin-top: 2px; }

/* ── Tag pill input widget (new_repo, settings) ─────────────────────────── */
.tag-input-container {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  min-height: 38px;
  cursor: text;
}
.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-overlay);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 2px 8px;
  font-size: 12px;
  color: var(--text-primary);
}
.tag-pill-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 14px;
  padding: 0;
  line-height: 1;
}
.tag-pill-remove:hover { color: #f85149; }
.tag-text-input {
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  min-width: 80px;
  flex: 1;
}

/* ── Branch pill (proposal_list, proposal_detail) ───────────────────────── */
.branch-pill {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
}

/* ── Sort button (proposal_list, commits) ───────────────────────────────── */
.sort-btn {
  padding: 4px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
  background: var(--bg-overlay);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
}
.sort-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.sort-btn.sort-active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
// Standalone .sort-active (not on a .sort-btn) scoped to known containers
.sort-controls .sort-active,
.filter-bar .sort-active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* ── HTMX indicator (new_repo, settings) ────────────────────────────────── */
.htmx-indicator { opacity: 0; transition: opacity 0.2s ease; }
.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator { opacity: 1; }

/* ── Comment system — full threaded (commit page) ───────────────────────── */
.comment-thread { margin-bottom: var(--space-4); }
.comment-thread:last-child { margin-bottom: 0; }
.comment-row { display: flex; gap: var(--space-3); align-items: flex-start; }
.comment-reply-row { margin-top: var(--space-3); }
.comment-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  background: var(--bg-overlay);
  color: var(--text-muted);
  flex-shrink: 0;
}
.comment-body-col { flex: 1; min-width: 0; }
.comment-meta { display: flex; align-items: baseline; gap: var(--space-2); margin-bottom: var(--space-1); }
.comment-author { font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); color: var(--text-primary); }
.comment-ts    { font-size: var(--font-size-xs); color: var(--text-muted); }
.comment-date  { font-size: var(--font-size-xs); color: var(--text-muted); margin-left: auto; }
.comment-text  {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.55;
}
.comment-body {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.6;
  margin-bottom: 6px;
}
.comment-actions { display: flex; gap: var(--space-1); margin-top: var(--space-1); }
.comment-delete-btn { color: var(--color-danger, #f87171); }
.comment-replies {
  margin-top: var(--space-3);
  padding-left: var(--space-4);
  border-left: 2px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
// Inside .comment-replies the gap handles spacing; kill any inherited margin.
.comment-replies .comment-reply { margin-bottom: 0; }
.reply-form { margin-top: var(--space-2); }
.comment-textarea { width: 100%; font-family: var(--font-sans); font-size: var(--font-size-sm); }
.comment-form-actions { display: flex; gap: var(--space-2); margin-top: var(--space-1); }

/* ── Comment block — Proposal style (proposal_detail) ───────────────────── */
.comment-block {
  border: 1px solid var(--border-default);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: var(--space-3);
}
.comment-header-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-default);
  font-size: 13px;
}
.comment-body-text {
  padding: var(--space-3);
  font-size: 13px;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Diff stats (proposal_detail) ───────────────────────────────────────── */
.diff-stat { display: flex; gap: var(--space-3); font-size: 13px; flex-wrap: wrap; }
.diff-stat-additions { color: var(--color-success, #3fb950); font-weight: 600; }
.diff-stat-deletions { color: var(--color-danger, #f85149); font-weight: 600; }
.diff-stat-files     { color: var(--text-muted); }

/* ── Explore filter chip (explore, used in several sidebars) ────────────── */
.filter-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-overlay);
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
  cursor: pointer;
  margin: 2px 3px 2px 0;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.filter-chip:hover { background: var(--bg-hover, var(--bg-overlay)); color: var(--text-primary); text-decoration: none; }
.filter-chip.active {
  background: rgba(79, 142, 247, 0.12);
  color: var(--color-accent);
  border-color: rgba(79, 142, 247, 0.4);
}

// ── Label chip — used by the label_chip macro across all issue pages ──────────
.label-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  border: 1px solid;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: filter 0.12s;

  &:hover {
    filter: brightness(1.15);
    text-decoration: none;
  }

  &--active {
    box-shadow: 0 0 0 2px currentColor;
  }
}

.label-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}