/* DirtyMinds — Layout & Shell */

#app {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100vh;
  height: 100dvh;
}

.view {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: calc(var(--touch-min) + var(--safe-bottom) + var(--space-5));
  padding-top: var(--safe-top);
}

.view.hidden { display: none; }

/* FAB — add topic, equal distance bottom+right */
.fab {
  position: fixed;
  bottom: calc(var(--space-6, 24px) + var(--safe-bottom));
  right: var(--space-6, 24px);
  width: var(--touch-min);
  height: var(--touch-min);
  border-radius: 50%;
  background-color: var(--color-primary);
  color: white;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(255,77,143,0.35);
  z-index: 90;
  transition: transform 0.15s;
}
.fab:active { transform: scale(0.93); }

/* Nav menu — drops down from top-left title */
.nav-menu {
  position: fixed;
  top: calc(var(--safe-top) + 56px);
  left: var(--space-4);
  z-index: 400;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: var(--space-2);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  animation: navMenuDrop 0.15s ease-out;
}
.nav-menu.hidden { display: none; }

.nav-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--card-radius);
  font-size: 1rem;
  color: var(--color-text);
  text-align: left;
  white-space: nowrap;
}
.nav-menu-item:active { background: var(--color-surface); }
.nav-menu-item span { font-size: var(--font-size-sm); }

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 399;
}
.nav-backdrop.hidden { display: none; }

@keyframes navMenuDrop {
  from { opacity: 0; transform: translateY(-6px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0)   scale(1); }
}

/* Bottom Sheet */
.sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border-radius: var(--sheet-radius) var(--sheet-radius) 0 0;
  max-height: 90vh;
  z-index: 200;
  display: flex;
  flex-direction: column;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

.sheet.hidden {
  display: none;
}

.sheet-handle {
  width: 40px;
  height: 4px;
  background-color: var(--color-border);
  border-radius: 2px;
  align-self: center;
  margin-top: var(--space-3);
  margin-bottom: var(--space-4);
}

.sheet-content {
  flex: 1;
  overflow-y: auto;
  padding: 0 var(--space-4) var(--space-8);
}

.sheet-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: var(--touch-min);
  height: var(--touch-min);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-muted);
}

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: var(--space-4);
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--space-8);
}

.empty-state-icon {
  font-size: 3rem;
  opacity: 0.5;
}

/* Sheet backdrop */
.sheet-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 190;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideDown {
  from { transform: translateY(0); }
  to { transform: translateY(100%); }
}

/* View header */
.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-4) var(--space-3);
}

.view-title {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
}
.view-title::after {
  content: ' ▾';
  font-size: 0.75em;
  opacity: 0.5;
}

/* Sheet title */
.sheet-title {
  margin: 0 0 var(--space-5);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

/* Form fields */
.field-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  margin-top: var(--space-4);
}

.field-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  color: var(--color-text);
  font-size: var(--font-size-base);
  outline: none;
  transition: border-color 0.2s;
}

.field-input:focus {
  border-color: var(--color-primary);
}

.field-input.input-error {
  border-color: var(--status-active);
}

/* Emoji grid */
.emoji-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.emoji-btn {
  aspect-ratio: 1;
  font-size: 1.4rem;
  border-radius: 10px;
  background-color: var(--color-surface-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s, transform 0.15s;
  min-height: var(--touch-min);
}

.emoji-btn:active {
  transform: scale(0.9);
}

.emoji-btn.active {
  background-color: var(--color-primary-dim);
  outline: 2px solid var(--color-primary);
}

/* Color picker */
.color-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}

.color-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid transparent;
  transition: transform 0.15s, border-color 0.15s;
}

.color-dot:active {
  transform: scale(0.9);
}

.color-dot.active {
  border-color: white;
  transform: scale(1.1);
}

/* Sheet actions */
.sheet-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding-bottom: var(--space-4);
}

.btn-primary {
  flex: 1;
  padding: var(--space-4);
  background-color: var(--color-primary);
  color: white;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  border-radius: 14px;
  min-height: var(--touch-min);
  transition: opacity 0.2s;
}

.btn-primary:active {
  opacity: 0.8;
}

.btn-danger {
  padding: var(--space-4);
  background-color: var(--color-surface-raised);
  color: var(--status-active);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: 14px;
  border: 1px solid var(--status-active);
  min-height: var(--touch-min);
  transition: opacity 0.2s;
}

.btn-danger:active {
  opacity: 0.8;
}

.btn-icon {
  width: var(--touch-min);
  height: var(--touch-min);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  border-radius: 12px;
  background-color: var(--color-surface-raised);
  color: var(--color-text-muted);
  transition: opacity 0.2s;
}

.btn-icon:active {
  opacity: 0.7;
}

/* Users list */
.users-list {
  padding: 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.user-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  border-radius: var(--card-radius);
  border: 1px solid var(--color-border);
}

.user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  font-weight: var(--font-weight-bold);
  color: white;
}

.user-info {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-initials {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ─── Filter chips ──────────────────────────────────────── */

.filter-chips {
  display: flex;
  gap: var(--space-2);
  padding: 0 var(--space-4) var(--space-3);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.filter-chips::-webkit-scrollbar { display: none; }

.chip {
  flex-shrink: 0;
  padding: var(--space-2) var(--space-3);
  border-radius: 999px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  background-color: var(--color-surface-raised);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  white-space: nowrap;
  transition: background-color 0.15s, color 0.15s;
  min-height: 36px;
}

.chip.active {
  background-color: var(--color-primary-dim);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ─── Topics list ────────────────────────────────────────── */

.topics-list {
  padding: var(--space-2) var(--space-4) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ─── Topic card ─────────────────────────────────────────── */

.topic-card {
  display: flex;
  border-radius: var(--card-radius);
  background-color: var(--color-surface);
  border: 1px solid color-mix(in srgb, var(--card-status-color) 30%, var(--color-border));
  overflow: hidden;
  touch-action: none;
  transition: box-shadow 0.2s;
}

.topic-card.is-dragging {
  box-shadow: 0 12px 32px rgba(0,0,0,0.6);
  opacity: 0.92;
  transform: scale(1.02);
}

.topic-status-bar {
  width: 4px;
  flex-shrink: 0;
  background-color: var(--card-status-color);
  border-radius: var(--card-radius) 0 0 var(--card-radius);
}

.topic-card-body {
  flex: 1;
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-3);
  min-width: 0;
}

.topic-card-top {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.topic-text {
  flex: 1;
  margin: 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--color-text);
}

.topic-card { cursor: grab; touch-action: manipulation; }
.topic-card.is-dragging { cursor: grabbing; touch-action: none; }

/* Branch ref */
.topic-branch-ref {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.branch-ref-text {
  font-style: italic;
}

/* Card bottom row */
.topic-card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
  gap: var(--space-2);
}

.topic-meta-left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  min-width: 0;
}

.topic-meta-right {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

.topic-avatar-sm {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: white;
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.topic-arrow {
  font-size: var(--font-size-sm);
  color: var(--color-text-faint);
}

.topic-age {
  font-size: var(--font-size-xs);
  color: var(--color-text-faint);
}

.topic-reactions {
  display: flex;
  gap: var(--space-1);
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 1;
}

.topic-reactions::-webkit-scrollbar { display: none; }

.reaction-chip {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px 6px;
  border-radius: 999px;
  font-size: 0.85rem;
  background-color: var(--reaction-bg);
  border: 1px solid transparent;
  white-space: nowrap;
  min-height: 28px;
  transition: background-color 0.15s, border-color 0.15s;
}

.reaction-chip.active {
  background-color: var(--reaction-bg-active);
  border-color: var(--reaction-border-active);
}

.reaction-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  min-width: 8px;
}

.branch-badge {
  flex-shrink: 0;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: var(--font-size-xs);
  background-color: var(--color-surface-raised);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  white-space: nowrap;
  min-height: 28px;
}

/* ─── Current user button ────────────────────────────────── */

.current-user-btn {
  background: none;
  border: none;
  padding: 0;
}

.current-user-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  border: 2px solid var(--color-primary);
}

/* ─── New topic sheet extras ─────────────────────────────── */

.field-textarea {
  resize: none;
  min-height: 90px;
  font-family: inherit;
  line-height: 1.5;
}

.sheet-parent-ref {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-raised);
  border-radius: 10px;
}

.user-picker-row {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-1);
  scrollbar-width: none;
}

.user-picker-row::-webkit-scrollbar { display: none; }

.user-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2);
  border-radius: 12px;
  background-color: var(--color-surface-raised);
  border: 2px solid transparent;
  flex-shrink: 0;
  min-width: 60px;
  transition: border-color 0.15s;
}

.user-pill.active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-dim);
}

.user-pill-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: white;
}

.user-pill-name {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 56px;
}

/* ─── Topic detail sheet ─────────────────────────────────── */

.detail-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.detail-creator {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.detail-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  margin: 0 0 var(--space-5);
  color: var(--color-text);
}

.status-picker {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.status-chip {
  padding: var(--space-3) var(--space-4);
  border-radius: 12px;
  text-align: left;
  font-size: var(--font-size-base);
  background-color: var(--color-surface-raised);
  border: 2px solid transparent;
  color: var(--color-text-muted);
  transition: border-color 0.15s, color 0.15s;
  min-height: var(--touch-min);
}

.status-chip.active {
  border-color: var(--chip-color);
  color: var(--chip-color);
  background-color: color-mix(in srgb, var(--chip-color) 10%, var(--color-surface-raised));
}

.reactions-detail {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}

.reaction-detail-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: 12px;
  background-color: var(--reaction-bg);
  border: 1px solid transparent;
  min-width: 48px;
  transition: background-color 0.15s, border-color 0.15s;
}

.reaction-detail-btn.active {
  background-color: var(--reaction-bg-active);
  border-color: var(--reaction-border-active);
}

.reaction-emoji { font-size: 1.5rem; }

.reaction-count-lg {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  min-width: 16px;
  text-align: center;
}

.detail-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding-bottom: var(--space-4);
}

.btn-secondary {
  padding: var(--space-4);
  background-color: var(--color-surface-raised);
  color: var(--color-text);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: 14px;
  border: 1px solid var(--color-border);
  min-height: var(--touch-min);
  text-align: left;
  transition: opacity 0.2s;
}

.btn-secondary:active { opacity: 0.7; }

.btn-danger-sm {
  padding: var(--space-3) var(--space-4);
  background-color: transparent;
  color: var(--status-active);
  font-size: var(--font-size-sm);
  border-radius: 14px;
  min-height: 40px;
  text-align: left;
  transition: opacity 0.2s;
}

/* ─── User picker list (current user sheet) ──────────────── */

.user-picker-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.user-picker-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--card-radius);
  background-color: var(--color-surface-raised);
  border: 2px solid transparent;
  min-height: var(--touch-min);
  transition: border-color 0.15s;
}

.user-picker-item.active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-dim);
}

.user-picker-item .check {
  margin-left: auto;
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

/* ─── User card current highlight ────────────────────────── */

.user-card--current {
  border-color: var(--color-primary);
  background-color: color-mix(in srgb, var(--color-primary) 8%, var(--color-surface));
}

/* Loading skeleton */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface) 0%,
    var(--color-surface-raised) 50%,
    var(--color-surface) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ─── Detail sheet — inline text edit ───────────────────────── */

.detail-text[data-editable] {
  cursor: pointer;
  transition: color 0.15s;
}

.detail-text[data-editable]:hover {
  color: var(--color-primary);
}

.detail-save-btn {
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-4);
  min-height: 40px;
  font-size: var(--font-size-sm);
}

/* ─── Detail sheet — branch mini-cards ──────────────────────── */

.branch-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.branch-mini-card {
  display: flex;
  border-radius: 12px;
  background-color: var(--color-surface-raised);
  border: 1px solid color-mix(in srgb, var(--card-status-color) 30%, var(--color-border));
  overflow: hidden;
  min-height: var(--touch-min);
  width: 100%;
  text-align: left;
  transition: opacity 0.15s;
}

.branch-mini-card:active {
  opacity: 0.7;
}

.branch-mini-status {
  width: 4px;
  flex-shrink: 0;
  background-color: var(--card-status-color);
}

.branch-mini-body {
  flex: 1;
  padding: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
}

.branch-mini-text {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.branch-mini-age {
  font-size: var(--font-size-xs);
  color: var(--color-text-faint);
  flex-shrink: 0;
}

/* ─── Detail sheet — history log ────────────────────────────── */

.detail-history {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.detail-history dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-1) var(--space-4);
  margin: 0;
}

.detail-history dt {
  font-size: var(--font-size-xs);
  color: var(--color-text-faint);
}

.detail-history dd {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin: 0;
}

/* ─── Archive view ───────────────────────────────────────────── */

.archive-list {
  padding: var(--space-2) var(--space-4) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.archive-card {
  display: flex;
  border-radius: var(--card-radius);
  background-color: var(--color-surface);
  border: 1px solid color-mix(in srgb, var(--card-status-color) 30%, var(--color-border));
  overflow: hidden;
}

.archive-card--deleted {
  opacity: 0.55;
}

.archive-card-body {
  flex: 1;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}

.archive-card-text {
  font-size: var(--font-size-base);
  color: var(--color-text);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.archive-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.btn-restore {
  margin-left: auto;
  padding: var(--space-2) var(--space-3);
  border-radius: 10px;
  font-size: var(--font-size-sm);
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  min-height: 36px;
  white-space: nowrap;
  transition: opacity 0.15s;
}

.btn-restore:active {
  opacity: 0.7;
}