/* ═══════════════════════════════════════════════════
   Variables & Reset
═══════════════════════════════════════════════════ */
:root {
  color-scheme: light;
  --font: 'Nunito', system-ui, sans-serif;

  --clr-primary:    #6366f1;
  --clr-primary-dk: #4f52d4;
  --clr-primary-lt: #e0e7ff;
  --clr-surface:    #ffffff;
  --clr-bg:         #f0eff5;
  --clr-text:       #1e1b4b;
  --clr-text-2:     #6b7280;
  --clr-border:     #e5e7eb;

  --prio-low:  #3b82f6;
  --prio-med:  #f59e0b;
  --prio-high: #ef4444;
  --clr-done:  #10b981;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --topbar-h:       92px;
  --section-bar-h:  46px;
  --sidebar-w:      220px;
  --page-index-w:   180px;
  --t: 200ms cubic-bezier(.4,0,.2,1);
}

/* ═══════════════════════════════════════════════════
   Dark theme
═══════════════════════════════════════════════════ */
[data-theme="dark"] {
  color-scheme: dark;
  --clr-primary:    #818cf8;
  --clr-primary-dk: #6366f1;
  --clr-primary-lt: rgba(99,102,241,0.18);
  --clr-surface:    #1e1e30;
  --clr-bg:         #13131f;
  --clr-text:       #e8e8f8;
  --clr-text-2:     #8080a0;
  --clr-border:     #2d2d4a;
}

/* Dark mode hardcoded-color fixes */
[data-theme="dark"] #search-input:focus              { background: var(--clr-surface); }
[data-theme="dark"] .detail-desc:focus               { background: var(--clr-surface); }
[data-theme="dark"] .date-input:focus                { background: var(--clr-surface); }
[data-theme="dark"] .due-chip                        { background: #252540; color: var(--clr-text-2); }
[data-theme="dark"] .todo-row:hover                  { border-color: #3d3d5e; }
[data-theme="dark"] .sel-btn.active-todo             { background: #252540; border-color: var(--clr-text-2); color: var(--clr-text-2); }
[data-theme="dark"] .sel-btn.active-done             { background: rgba(16,185,129,0.18); }
[data-theme="dark"] .list-card-action                { background: rgba(20,20,38,0.92); }
[data-theme="dark"] .list-card-action:hover          { background: var(--clr-surface); color: var(--clr-text); }
[data-theme="dark"] .dropdown-item-danger:hover      { background: rgba(239,68,68,0.12); }
[data-theme="dark"] .btn-sm-danger:hover             { background: rgba(239,68,68,0.12); }
[data-theme="dark"] .admin-role-user                 { background: rgba(3,105,161,0.22); color: #38bdf8; }
[data-theme="dark"] #lightbox-close                  { background: rgba(20,20,38,0.92); color: var(--clr-text); }
[data-theme="dark"] #lightbox-close:hover            { background: var(--clr-surface); }
[data-theme="dark"] .list-card                       { box-shadow: 0 2px 12px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.3); }
[data-theme="dark"] .list-card:hover                 { box-shadow: 0 8px 28px rgba(0,0,0,0.55), 0 2px 8px rgba(0,0,0,0.35); }
[data-theme="dark"] #login-card                      { box-shadow: 0 8px 40px rgba(0,0,0,0.5); }
[data-theme="dark"] .card-todo-row:hover             { background: rgba(255,255,255,0.04); }

/* ═══════════════════════════════════════════════════
   Monochrome theme
═══════════════════════════════════════════════════ */
[data-theme="mono"] {
  color-scheme: light;
  --clr-primary:    #1a1a1a;
  --clr-primary-dk: #000000;
  --clr-primary-lt: #e2e2e2;
  --clr-surface:    #ffffff;
  --clr-bg:         #f4f4f4;
  --clr-text:       #0a0a0a;
  --clr-text-2:     #666666;
  --clr-border:     #cccccc;

  --prio-low:  #555555;
  --prio-med:  #222222;
  --prio-high: #000000;
  --clr-done:  #444444;
}

/* Strip per-card colour; use a uniform dark top rule */
[data-theme="mono"] .list-card {
  border-top-color: #111 !important;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
[data-theme="mono"] .list-card:hover {
  box-shadow: 0 4px 14px rgba(0,0,0,0.11);
}
[data-theme="mono"] .list-card-progress-fill { background: #555 !important; }


/* Priority dots / chips stay neutral */
[data-theme="mono"] .prio-dot,
[data-theme="mono"] .prio-badge { filter: grayscale(1); }

/* Sidebar active project in mono */
[data-theme="mono"] .project-item.active { background: #e2e2e2; }
[data-theme="mono"] .project-item.active .project-name { color: #111; }

/* Login card subtle shadow */
[data-theme="mono"] #login-card { box-shadow: 0 4px 20px rgba(0,0,0,0.1); }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; }

/* ═══════════════════════════════════════════════════
   App shell
═══════════════════════════════════════════════════ */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ═══════════════════════════════════════════════════
   Top bar
═══════════════════════════════════════════════════ */
#topbar {
  height: var(--topbar-h);
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  padding: 6px 24px 0;
  gap: 0;
  flex-shrink: 0;
  box-shadow: 0 1px 6px rgba(0,0,0,0.05);
  position: relative;
  z-index: 10;
}

#topbar-logo-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-bottom: 5px;
  flex-shrink: 0;
}
#topbar-logo {
  height: 30px;
  width: auto;
}

#topbar-main-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex: 1;
  border-top: 1px solid var(--clr-border);
}

#topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

#topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
#search-input {
  background: var(--clr-bg);
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  padding: 7px 14px;
  font-size: 14px;
  width: 220px;
  outline: none;
  transition: border-color var(--t), background var(--t), width var(--t);
  color: var(--clr-text);
}
#search-input::placeholder { color: var(--clr-text-2); }
#search-input:focus {
  border-color: var(--clr-primary);
  background: #fff;
  width: 280px;
}

/* ═══════════════════════════════════════════════════
   Buttons
═══════════════════════════════════════════════════ */
.btn-primary {
  padding: 8px 20px;
  background: var(--clr-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  transition: background var(--t), transform var(--t);
  white-space: nowrap;
}
.btn-primary:hover { background: var(--clr-primary-dk); }
.btn-primary:active { transform: scale(0.97); }

.btn-outline {
  padding: 7px 18px;
  background: none;
  color: var(--clr-primary);
  border: 1.5px solid var(--clr-primary);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  transition: background var(--t);
  white-space: nowrap;
}
.btn-outline:hover { background: var(--clr-primary-lt); }

.btn-secondary {
  padding: 8px 20px;
  background: none;
  color: var(--clr-text-2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  transition: border-color var(--t), color var(--t);
}
.btn-secondary:hover { border-color: var(--clr-text-2); color: var(--clr-text); }

.btn-danger {
  padding: 8px 18px;
  background: none;
  color: var(--prio-high);
  border: 1.5px solid rgba(239,68,68,0.3);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  transition: background var(--t), border-color var(--t);
}
.btn-danger:hover { background: rgba(239,68,68,0.07); border-color: var(--prio-high); }

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  font-size: 20px;
  color: var(--clr-text-2);
  transition: background var(--t), color var(--t);
  flex-shrink: 0;
}
.icon-btn:hover { background: var(--clr-bg); color: var(--clr-text); }

/* ═══════════════════════════════════════════════════
   App body — sidebar + content row
═══════════════════════════════════════════════════ */
#app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ═══════════════════════════════════════════════════
   Sidebar
═══════════════════════════════════════════════════ */
#sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--clr-surface);
  border-right: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  transition: width var(--t), min-width var(--t);
}
#sidebar.collapsed {
  width: 0;
  min-width: 0;
}

#project-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 8px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--clr-border) transparent;
}

.project-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  transition: background var(--t);
}
.project-item:hover { background: var(--clr-bg); }
.project-item.active { background: var(--clr-primary-lt); }
.project-item.active .project-name { color: var(--clr-primary); font-weight: 700; }

.project-name {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--clr-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  flex-shrink: 0;
  transition: opacity var(--t);
}
.project-item:hover .project-actions { opacity: 1; }

.project-action-btn {
  width: 22px; height: 22px;
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  color: var(--clr-text-2);
  transition: background var(--t), color var(--t);
}
.project-action-btn:hover { background: var(--clr-border); color: var(--clr-text); }
.project-action-btn[data-action="delete"]:hover { color: var(--prio-high); background: rgba(239,68,68,0.1); }

#new-project-btn {
  margin: 8px;
  font-size: 13px;
  padding: 7px 12px;
  flex-shrink: 0;
}

/* New project modal */
#new-project-modal {
  position: fixed; inset: 0;
  z-index: 200;
  display: none;
  align-items: center; justify-content: center;
}
#new-project-modal.open { display: flex; }
#new-project-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(2px);
}
#new-project-panel {
  position: relative;
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  padding: 28px 24px 24px;
  width: min(400px, 94vw);
  box-shadow: 0 20px 60px rgba(0,0,0,0.18);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
#new-project-panel h2 { font-size: 18px; font-weight: 800; }

/* ═══════════════════════════════════════════════════
   Content area
═══════════════════════════════════════════════════ */
#content-area {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--clr-border) transparent;
}

/* ═══════════════════════════════════════════════════
   HOME — List cards grid
═══════════════════════════════════════════════════ */
.lists-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  align-items: start;
  gap: 20px;
  padding: 28px;
}

.list-card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  padding: 24px 20px 20px;
  cursor: pointer;
  position: relative;
  border-top: 5px solid var(--card-color, var(--clr-primary));
  box-shadow: 0 2px 12px rgba(0,0,0,0.07), 0 1px 3px rgba(0,0,0,0.05);
  transition: transform var(--t), box-shadow var(--t);
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: hidden;
}
.list-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
}
.list-card:active { transform: translateY(-1px); }

.list-card-icon {
  font-size: 36px;
  line-height: 1;
  margin-bottom: 4px;
}
.list-card-name {
  font-size: 17px;
  font-weight: 800;
  color: var(--clr-text);
  line-height: 1.3;
}
.list-card-meta {
  font-size: 13px;
  color: var(--clr-text-2);
  margin-top: 2px;
}
.list-card-progress {
  height: 4px;
  background: var(--clr-border);
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}
.list-card-progress-fill {
  height: 100%;
  background: var(--card-color, var(--clr-primary));
  border-radius: 2px;
  transition: width 400ms ease;
}
.list-card-actions {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity var(--t);
}
.list-card:hover .list-card-actions { opacity: 1; }
.list-card-action {
  width: 28px; height: 28px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  color: var(--clr-text-2);
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(4px);
  transition: background var(--t), color var(--t);
}
.list-card-action:hover { background: #fff; color: var(--clr-text); }
.list-card-action.delete:hover { color: var(--prio-high); }

/* Card task rows */
.card-todo-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin: 2px 0 4px;
}
.card-todo-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 2px;
  border-radius: 6px;
  transition: background var(--t);
  min-width: 0;
}
.card-todo-row:hover { background: rgba(0,0,0,0.03); }
.card-todo-check {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--clr-border);
  flex-shrink: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t), border-color var(--t), transform var(--t);
}
.card-todo-check:hover { border-color: var(--clr-done); transform: scale(1.1); }
.card-todo-check.card-todo-checked {
  background: var(--clr-done);
  border-color: var(--clr-done);
}
.card-todo-check.card-todo-checked::after {
  content: '';
  display: block;
  width: 4px;
  height: 7px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
  border-radius: 1px;
}
.card-todo-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-text);
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
  line-height: 1.4;
  transition: color var(--t);
}
.card-todo-title:hover { color: var(--clr-primary); }
.card-todo-done .card-todo-title {
  text-decoration: line-through;
  color: var(--clr-text-2);
  opacity: 0.7;
}
.card-todo-done .card-todo-title:hover { color: var(--clr-text-2); }
.card-todo-more {
  font-size: 11px;
  color: var(--clr-text-2);
  padding: 3px 2px 1px;
  font-weight: 600;
}
.card-no-tasks {
  font-size: 13px;
  color: var(--clr-text-2);
  font-style: italic;
  padding: 2px 0 4px;
}
.card-add-btn {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 7px 10px;
  background: transparent;
  border: 1.5px dashed var(--clr-border);
  border-radius: 8px;
  color: var(--clr-text-2);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.card-add-btn:hover {
  border-color: var(--card-color);
  color: var(--card-color);
  background: rgba(0,0,0,0.03);
}
[data-theme="dark"] .card-add-btn:hover { background: rgba(255,255,255,0.04); }
.card-add-input {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 7px 10px;
  border: 1.5px solid var(--card-color);
  border-radius: 8px;
  background: var(--clr-surface);
  color: var(--clr-text);
  font-size: 13px;
  font-family: inherit;
  box-sizing: border-box;
  outline: none;
}
.list-edit-btn {
  font-size: 17px;
  opacity: 0.55;
  margin-left: 2px;
}
.list-edit-btn:hover { opacity: 1; }
.list-card-footer {
  margin-top: auto;
  padding-top: 8px;
}
.list-card-footer .list-card-meta { margin-top: 0; }
.list-card-footer .list-card-progress { margin-top: 6px; }

/* New list card (dashed) */
.list-card-new {
  background: transparent;
  border: 2.5px dashed var(--clr-border);
  border-top: 2.5px dashed var(--clr-border);
  box-shadow: none;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  color: var(--clr-text-2);
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
}
.list-card-new:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: var(--clr-primary-lt);
  transform: none;
  box-shadow: none;
}
.list-card-new .plus { font-size: 28px; font-weight: 300; }

/* ═══════════════════════════════════════════════════
   LIST VIEW — Todo checklist
═══════════════════════════════════════════════════ */
.checklist-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px 100px;
}

/* Quick-add */
.quick-add {
  display: flex;
  align-items: center;
  background: var(--clr-surface);
  border: 1.5px dashed var(--clr-border);
  border-radius: var(--radius-md);
  padding: 0 16px;
  margin-bottom: 20px;
  transition: border-color var(--t), box-shadow var(--t);
}
.quick-add:focus-within {
  border-color: var(--clr-primary);
  border-style: solid;
  box-shadow: 0 0 0 3px var(--clr-primary-lt);
}
.quick-add-icon {
  font-size: 20px;
  color: var(--clr-text-2);
  margin-right: 10px;
  flex-shrink: 0;
  transition: color var(--t);
}
.quick-add:focus-within .quick-add-icon { color: var(--clr-primary); }
.quick-add input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 15px;
  padding: 14px 0;
  background: transparent;
  color: var(--clr-text);
}
.quick-add input::placeholder { color: var(--clr-text-2); }

/* Section header ("Active" / "Completed") */
.checklist-section-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--clr-text-2);
  margin: 20px 0 10px;
  user-select: none;
}
.checklist-section-header span { flex: 1; }
.checklist-toggle-btn {
  font-size: 11px;
  font-weight: 700;
  color: var(--clr-text-2);
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px 8px;
  border-radius: 10px;
  transition: background var(--t);
}
.checklist-toggle-btn:hover { background: var(--clr-border); }

/* Todo row */
.todo-row {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  padding: 13px 16px;
  margin-bottom: 8px;
  min-height: 52px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  border: 1.5px solid var(--clr-border);
  transition: box-shadow var(--t), border-color var(--t);
}
.todo-row:hover {
  box-shadow: 0 3px 12px rgba(0,0,0,0.09);
  border-color: #d1d5db;
}
.todo-row.done-row {
  opacity: 0.55;
  box-shadow: none;
}

/* Circle checkbox */
.todo-check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2.5px solid var(--check-color, var(--clr-border));
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--t), border-color var(--t), transform var(--t);
  position: relative;
}
.todo-check:hover { transform: scale(1.12); }
.todo-check.checked {
  background: var(--clr-done);
  border-color: var(--clr-done);
}
.todo-check.checked::after {
  content: '';
  display: block;
  width: 6px;
  height: 10px;
  border: 2.5px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
  border-radius: 1px;
}

/* Priority-colored border on the check circle */
.todo-row.priority-low    .todo-check:not(.checked) { --check-color: var(--prio-low); }
.todo-row.priority-medium .todo-check:not(.checked) { --check-color: var(--prio-med); }
.todo-row.priority-high   .todo-check:not(.checked) { --check-color: var(--prio-high); }

/* Title */
.todo-title {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
  color: var(--clr-text);
  cursor: pointer;
  line-height: 1.4;
  word-break: break-word;
  min-width: 0;
}
.todo-title:hover { color: var(--clr-primary); }
.done-row .todo-title {
  text-decoration: line-through;
  color: var(--clr-text-2);
}
.done-row .todo-title:hover { color: var(--clr-text-2); }

/* Meta chips */
.todo-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.prio-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.prio-dot.low    { background: var(--prio-low); }
.prio-dot.medium { background: var(--prio-med); }
.prio-dot.high   { background: var(--prio-high); }
.due-chip {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  background: #f1f5f9;
  color: var(--clr-text-2);
  white-space: nowrap;
}
.due-chip.overdue { background: rgba(239,68,68,0.1); color: var(--prio-high); }

/* ═══════════════════════════════════════════════════
   FAB
═══════════════════════════════════════════════════ */
#fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: #fff;
  font-size: 28px;
  font-weight: 300;
  box-shadow: 0 4px 18px rgba(99,102,241,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  z-index: 20;
  transition: transform var(--t), box-shadow var(--t), background var(--t);
}
#fab:hover {
  background: var(--clr-primary-dk);
  transform: scale(1.08);
  box-shadow: 0 6px 26px rgba(99,102,241,0.5);
}
#fab:active { transform: scale(0.96); }

/* ═══════════════════════════════════════════════════
   Empty states
═══════════════════════════════════════════════════ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 55vh;
  text-align: center;
  gap: 12px;
  color: var(--clr-text-2);
  user-select: none;
  padding: 20px;
}
.empty-illustration { font-size: 64px; line-height: 1; opacity: 0.35; }
.empty-state h2 { font-size: 20px; font-weight: 800; color: var(--clr-text); opacity: 0.55; }
.empty-state p { font-size: 14px; max-width: 280px; }

/* ═══════════════════════════════════════════════════
   Detail drawer
═══════════════════════════════════════════════════ */
#detail-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  pointer-events: none;
}
#detail-overlay.open { pointer-events: all; }
#detail-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15,15,40,0.4);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity var(--t);
}
#detail-overlay.open #detail-backdrop { opacity: 1; }
#detail-panel {
  position: relative;
  width: 540px;
  max-width: 100%;
  height: 100%;
  background: var(--clr-surface);
  margin-left: auto;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 280ms cubic-bezier(.4,0,.2,1);
  box-shadow: -8px 0 40px rgba(0,0,0,0.14);
  scrollbar-width: thin;
  scrollbar-color: var(--clr-border) transparent;
}
#detail-overlay.open #detail-panel { transform: translateX(0); }

.detail-close {
  position: sticky;
  top: 0;
  background: var(--clr-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px 12px;
  border-bottom: 1px solid var(--clr-border);
  z-index: 2;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.detail-close-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  color: var(--clr-text-2);
  transition: background var(--t), color var(--t);
}
.detail-close-btn:hover { background: var(--clr-bg); color: var(--clr-text); }
.detail-actions-top { display: flex; gap: 8px; align-items: center; }

.detail-body { padding: 20px 24px 80px; }
.detail-title {
  font-size: 22px;
  font-weight: 800;
  border: none;
  outline: none;
  width: 100%;
  color: var(--clr-text);
  background: transparent;
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color var(--t);
  resize: none;
  overflow: hidden;
  line-height: 1.35;
  margin-bottom: 14px;
}
.detail-title:focus { border-bottom-color: var(--clr-primary); }
.detail-desc {
  font-size: 14.5px;
  line-height: 1.65;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  width: 100%;
  min-height: 100px;
  resize: vertical;
  color: var(--clr-text);
  outline: none;
  transition: border-color var(--t);
  background: var(--clr-bg);
  margin-bottom: 18px;
}
.detail-desc:focus { border-color: var(--clr-primary); background: #fff; }
.detail-desc::placeholder { color: var(--clr-text-2); }

.detail-row { display: flex; gap: 18px; margin-bottom: 18px; flex-wrap: wrap; }
.detail-field { display: flex; flex-direction: column; gap: 6px; flex: 1; min-width: 130px; }
.detail-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--clr-text-2);
}

.selector-group { display: flex; gap: 6px; flex-wrap: wrap; }
.sel-btn {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1.5px solid var(--clr-border);
  font-size: 12px;
  font-weight: 700;
  color: var(--clr-text-2);
  transition: all var(--t);
}
.sel-btn:hover { border-color: var(--clr-primary); color: var(--clr-primary); }
.sel-btn.active-todo        { background: #f1f5f9;         border-color: #6b7280;          color: #6b7280; }
.sel-btn.active-in_progress { background: var(--clr-primary-lt); border-color: var(--clr-primary); color: var(--clr-primary); }
.sel-btn.active-done        { background: #d1fae5;         border-color: #10b981;           color: #10b981; }
.sel-btn.active-low         { background: rgba(59,130,246,0.12);  border-color: var(--prio-low);  color: var(--prio-low); }
.sel-btn.active-medium      { background: rgba(245,158,11,0.12);  border-color: var(--prio-med);  color: var(--prio-med); }
.sel-btn.active-high        { background: rgba(239,68,68,0.12);   border-color: var(--prio-high); color: var(--prio-high); }

.date-input {
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 7px 11px;
  font-size: 13px;
  color: var(--clr-text);
  font-family: var(--font);
  outline: none;
  background: var(--clr-bg);
  transition: border-color var(--t);
}
.date-input:focus { border-color: var(--clr-primary); background: #fff; }

/* Attachments */
.attachments-section { margin-top: 24px; }
.attachments-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.attachments-title { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.6px; color: var(--clr-text-2); }
.add-att-btn {
  font-size: 12px; font-weight: 700;
  padding: 5px 12px;
  border-radius: 20px;
  border: 1.5px solid var(--clr-primary);
  color: var(--clr-primary);
  transition: background var(--t);
}
.add-att-btn:hover { background: var(--clr-primary-lt); }
.attachments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 10px;
}
.att-item {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--clr-bg);
  border: 1.5px solid var(--clr-border);
  aspect-ratio: 1;
  cursor: pointer;
  transition: transform var(--t);
}
.att-item:hover { transform: scale(1.04); }
.att-item img { width: 100%; height: 100%; object-fit: cover; display: block; }
.att-file-icon {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 100%; gap: 4px; padding: 8px; text-align: center;
}
.att-file-icon .file-emoji { font-size: 28px; }
.att-file-name { font-size: 10px; color: var(--clr-text-2); word-break: break-all; line-height: 1.2; max-height: 36px; overflow: hidden; }
.att-delete {
  position: absolute; top: 4px; right: 4px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(239,68,68,0.85);
  color: #fff; font-size: 12px;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: opacity var(--t);
  z-index: 2;
}
.att-item:hover .att-delete { opacity: 1; }
.att-upload-progress { width: 100%; height: 3px; background: var(--clr-border); border-radius: 2px; margin-top: 8px; overflow: hidden; display: none; }
.att-upload-progress.active { display: block; }
.att-upload-bar { height: 100%; background: var(--clr-primary); border-radius: 2px; transition: width 200ms; width: 0%; }

.detail-footer {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 24px;
  border-top: 1px solid var(--clr-border);
  background: var(--clr-surface);
  position: sticky; bottom: 0;
}

/* ═══════════════════════════════════════════════════
   Lightbox
═══════════════════════════════════════════════════ */
#lightbox {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none; opacity: 0;
  transition: opacity var(--t);
}
#lightbox.open { pointer-events: all; opacity: 1; }
#lightbox-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.88); }
#lightbox-content { position: relative; z-index: 1; max-width: 92vw; max-height: 92vh; }
#lightbox-img { max-width: 92vw; max-height: 88vh; border-radius: var(--radius-md); box-shadow: 0 20px 60px rgba(0,0,0,0.6); display: block; }
#lightbox-close {
  position: absolute; top: -14px; right: -14px;
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255,255,255,0.9);
  font-size: 16px; display: flex; align-items: center; justify-content: center; color: #333;
  transition: background var(--t);
}
#lightbox-close:hover { background: #fff; }

/* ═══════════════════════════════════════════════════
   New list modal
═══════════════════════════════════════════════════ */
#new-list-modal {
  position: fixed; inset: 0; z-index: 150;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none; opacity: 0;
  transition: opacity var(--t);
}
#new-list-modal.open { pointer-events: all; opacity: 1; }
#new-list-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.45); }
#new-list-panel {
  position: relative; z-index: 1;
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  padding: 28px; width: 420px; max-width: 95vw;
  max-height: 90vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
#new-list-panel h2 { font-size: 20px; font-weight: 800; margin-bottom: 20px; }
.form-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-row label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--clr-text-2); }
.form-row input[type="text"] {
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 9px 12px; font-size: 15px; outline: none;
  transition: border-color var(--t); color: var(--clr-text);
}
.form-row input[type="text"]:focus { border-color: var(--clr-primary); }
.emoji-input { font-size: 22px; width: 56px; text-align: center; }
#color-swatches { display: flex; gap: 8px; flex-wrap: wrap; }
.color-swatch {
  width: 30px; height: 30px; border-radius: 50%;
  border: 2.5px solid transparent; cursor: pointer;
  transition: transform var(--t), border-color var(--t);
}
.color-swatch:hover { transform: scale(1.15); }
.color-swatch.selected { border-color: var(--clr-text); transform: scale(1.1); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 8px; }

/* ═══════════════════════════════════════════════════
   Toast
═══════════════════════════════════════════════════ */
.toast {
  position: fixed; bottom: 28px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--clr-text); color: #fff;
  padding: 10px 22px; border-radius: 24px;
  font-size: 14px; font-weight: 600;
  opacity: 0; transition: opacity 200ms, transform 200ms;
  z-index: 300; pointer-events: none; white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ═══════════════════════════════════════════════════
   Form helpers
═══════════════════════════════════════════════════ */
.form-row input[type="password"],
.form-row input[type="email"],
.form-row select.select-input {
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 9px 12px; font-size: 15px; outline: none;
  transition: border-color var(--t); color: var(--clr-text);
  width: 100%;
}
.form-row input[type="password"]:focus,
.form-row input[type="email"]:focus,
.form-row select.select-input:focus { border-color: var(--clr-primary); }
.form-row input[type="text"] { width: 100%; }
.form-error {
  color: #ef4444; font-size: 13px; font-weight: 600;
  margin-bottom: 8px; min-height: 0;
}
.btn-full { width: 100%; justify-content: center; }

/* ═══════════════════════════════════════════════════
   Login screen
═══════════════════════════════════════════════════ */
#login-screen {
  display: flex;
  position: fixed; inset: 0;
  background: var(--clr-bg);
  align-items: center; justify-content: center;
  z-index: 1000;
}
#login-screen.hidden { display: none; }

#login-card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 40px rgba(99,102,241,.15);
  padding: 40px 36px 32px;
  width: 100%; max-width: 380px;
  display: flex; flex-direction: column; align-items: center;
}
#login-logo-img {
  width: 100%; max-width: 260px;
  height: auto;
  margin-bottom: 28px;
}
#login-form { width: 100%; }
#login-form .form-row { margin-bottom: 14px; }
#login-form .form-row input {
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px; font-size: 15px;
  outline: none; width: 100%;
  transition: border-color var(--t);
}
#login-form .form-row input:focus { border-color: var(--clr-primary); }
#login-error { margin-bottom: 10px; }
#login-btn { margin-top: 4px; padding: 12px; font-size: 16px; }

/* ═══════════════════════════════════════════════════
   User menu
═══════════════════════════════════════════════════ */
#user-menu { position: relative; }

.user-menu-btn {
  display: flex; align-items: center; gap: 6px;
  max-width: 140px;
}
#user-menu-name {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  max-width: 100px;
}
.user-caret { font-size: 10px; opacity: .6; flex-shrink: 0; }

.user-dropdown {
  display: none;
  position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  min-width: 180px; z-index: 200;
  overflow: hidden;
  flex-direction: column;
}
.user-dropdown.open { display: flex; }

.dropdown-item {
  display: block; width: 100%; text-align: left;
  padding: 11px 16px;
  font-size: 14px; font-weight: 600; color: var(--clr-text);
  background: none; border: none; cursor: pointer;
  transition: background var(--t);
}
.dropdown-item:hover { background: var(--clr-bg); }
.dropdown-item-danger { color: #ef4444; }
.dropdown-item-danger:hover { background: #fef2f2; }
.dropdown-divider { height: 1px; background: var(--clr-border); margin: 4px 0; }

/* ═══════════════════════════════════════════════════
   Change password modal
═══════════════════════════════════════════════════ */
#change-pw-modal {
  display: none; position: fixed; inset: 0; z-index: 500;
  align-items: center; justify-content: center;
}
#change-pw-modal.open { display: flex; }
#change-pw-backdrop {
  position: absolute; inset: 0;
  background: rgba(30,27,75,.45); backdrop-filter: blur(2px);
}
#change-pw-panel {
  position: relative; z-index: 1;
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  padding: 28px 28px 24px;
  width: 100%; max-width: 400px;
  box-shadow: 0 12px 40px rgba(0,0,0,.18);
}
#change-pw-panel h2 { font-size: 20px; font-weight: 800; margin-bottom: 20px; }

/* ═══════════════════════════════════════════════════
   Admin panel
═══════════════════════════════════════════════════ */
#admin-overlay {
  display: none; position: fixed; inset: 0; z-index: 500;
  align-items: center; justify-content: center;
}
#admin-overlay.open { display: flex; }
#admin-backdrop {
  position: absolute; inset: 0;
  background: rgba(30,27,75,.45); backdrop-filter: blur(2px);
}
#admin-panel {
  position: relative; z-index: 1;
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  width: 100%; max-width: 520px;
  max-height: 80vh;
  box-shadow: 0 12px 40px rgba(0,0,0,.18);
  display: flex; flex-direction: column;
  overflow: hidden;
}
#admin-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1.5px solid var(--clr-border);
  flex-shrink: 0;
}
#admin-header h2 { font-size: 20px; font-weight: 800; }
#admin-content {
  padding: 20px 24px;
  overflow-y: auto; flex: 1;
}
#admin-user-list { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }

.admin-user-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  background: var(--clr-bg);
  border-radius: var(--radius-md);
  padding: 12px 16px;
}
.admin-user-info { display: flex; align-items: center; gap: 10px; min-width: 0; }
.admin-username {
  font-weight: 700; font-size: 15px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.admin-role-badge {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .5px; padding: 2px 8px; border-radius: 12px;
  flex-shrink: 0;
}
.admin-role-admin { background: var(--clr-primary-lt); color: var(--clr-primary-dk); }
.admin-role-user  { background: #e0f2fe; color: #0369a1; }
.admin-user-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.admin-you { font-size: 12px; color: var(--clr-text-2); font-style: italic; }
.admin-empty { color: var(--clr-text-2); font-size: 14px; text-align: center; padding: 24px 0; }

.btn-sm {
  padding: 5px 12px; border-radius: var(--radius-sm);
  font-size: 12px; font-weight: 700;
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface); color: var(--clr-text);
  cursor: pointer; transition: background var(--t), border-color var(--t);
}
.btn-sm:hover { background: var(--clr-bg); border-color: var(--clr-text-2); }
.btn-sm-danger { border-color: #fca5a5; color: #ef4444; }
.btn-sm-danger:hover { background: #fef2f2; border-color: #ef4444; }

#new-user-form {
  margin-top: 16px;
  background: var(--clr-bg);
  border-radius: var(--radius-md);
  padding: 16px 18px 8px;
}

/* ═══════════════════════════════════════════════════
   Reset password modal (admin)
═══════════════════════════════════════════════════ */
#reset-pw-modal {
  display: none; position: fixed; inset: 0; z-index: 600;
  align-items: center; justify-content: center;
}
#reset-pw-modal.open { display: flex; }
#rp-backdrop {
  position: absolute; inset: 0;
  background: rgba(30,27,75,.45); backdrop-filter: blur(2px);
}
#rp-panel {
  position: relative; z-index: 1;
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  padding: 28px 28px 24px;
  width: 100%; max-width: 400px;
  box-shadow: 0 12px 40px rgba(0,0,0,.18);
}
#rp-panel h2 { font-size: 18px; font-weight: 800; margin-bottom: 20px; }

/* ═══════════════════════════════════════════════════
   Responsive
═══════════════════════════════════════════════════ */
@media (max-width: 600px) {
  #topbar { padding: 4px 14px 0; }
  #topbar-logo { height: 24px; }
  #search-input { width: 140px; }
  #search-input:focus { width: 170px; }
  .btn-outline { padding: 7px 12px; font-size: 13px; }
  .lists-grid { grid-template-columns: repeat(auto-fill, minmax(155px, 1fr)); gap: 14px; padding: 16px; }
  .checklist-wrap { padding: 16px 14px 100px; }
  #fab { bottom: 20px; right: 18px; }

  #detail-panel {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    width: 100% !important;
    height: 95vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    transform: translateY(100%);
    margin: 0;
  }
  #detail-overlay.open #detail-panel { transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════
   Icon picker
═══════════════════════════════════════════════════ */
.icon-picker {
  width: 100%;
  max-height: 220px;
  overflow-y: auto;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 8px;
  background: var(--clr-bg);
  scrollbar-width: thin;
}

.icon-picker-section { margin-bottom: 8px; }
.icon-picker-section:last-child { margin-bottom: 0; }

.icon-picker-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--clr-text-2);
  margin-bottom: 5px;
  padding-left: 2px;
}

.icon-picker-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.icon-picker-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  background: var(--clr-surface);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  transition: border-color var(--t), background var(--t);
  flex-shrink: 0;
}
.icon-picker-item:hover {
  border-color: var(--clr-primary);
  background: var(--clr-primary-lt);
}
.icon-picker-item.selected {
  border-color: var(--clr-primary);
  background: var(--clr-primary-lt);
  box-shadow: 0 0 0 2px var(--clr-primary-lt);
}

/* Inline SVG icons — stroke="currentColor" inherits color from theme */
.icon-picker-svg,
.list-card-icon-svg {
  display: block;
  flex-shrink: 0;
  color: var(--clr-primary);
}
.icon-picker-svg  { width: 20px; height: 20px; }
.list-card-icon-svg { width: 28px; height: 28px; }

}

/* ═══════════════════════════════════════════════════
   v2 — Project dropdown
═══════════════════════════════════════════════════ */
#project-selector { position: relative; display: flex; align-items: center; gap: 6px; }
.project-label { font-size: 12px; font-weight: 600; color: var(--clr-text-2); white-space: nowrap; }

.project-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--clr-bg);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 800;
  color: var(--clr-text);
  max-width: 220px;
  transition: background var(--t);
}
.project-dropdown-btn:hover { background: var(--clr-border); }
#project-name-display {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  flex: 1;
}
.proj-caret { font-size: 10px; opacity: .6; flex-shrink: 0; }

.project-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  min-width: 200px;
  z-index: 200;
  overflow: hidden;
  flex-direction: column;
}
.project-dropdown.open { display: flex; }

.proj-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 14px;
  transition: background var(--t);
}
.proj-item:hover { background: var(--clr-bg); }
.proj-item.active { background: var(--clr-primary-lt); }
.proj-item.active .proj-name { color: var(--clr-primary); font-weight: 700; }

.proj-name {
  flex: 1;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.proj-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  flex-shrink: 0;
  transition: opacity var(--t);
}
.proj-item:hover .proj-actions { opacity: 1; }
.proj-action-btn {
  width: 22px; height: 22px;
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  color: var(--clr-text-2);
  transition: background var(--t), color var(--t);
}
.proj-action-btn:hover { background: var(--clr-border); color: var(--clr-text); }
.proj-action-btn[data-action="delete"]:hover { color: var(--prio-high); background: rgba(239,68,68,0.1); }
.proj-divider { height: 1px; background: var(--clr-border); }
.proj-new-btn {
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-primary);
  text-align: left;
  transition: background var(--t);
}
.proj-new-btn:hover { background: var(--clr-primary-lt); }

/* ═══════════════════════════════════════════════════
   v2 — Section bar
═══════════════════════════════════════════════════ */
#section-bar {
  height: var(--section-bar-h);
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  padding: 0 8px 0 12px;
  gap: 4px;
  flex-shrink: 0;
  overflow: hidden;
}

#section-tabs {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  min-height: 100%;
}
#section-tabs::-webkit-scrollbar { display: none; }

.section-tab {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-text-2);
  transition: background var(--t), color var(--t);
  white-space: nowrap;
  flex-shrink: 0;
}
.section-tab:hover { background: var(--clr-bg); color: var(--clr-text); }
.section-tab.active { background: var(--clr-primary-lt); color: var(--clr-primary); }
.section-tab.dragging { opacity: 0.45; }
.section-tab.drag-over { outline: 2px solid var(--clr-primary); outline-offset: -2px; }

.section-tab-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  flex-shrink: 0;
  transition: opacity var(--t);
}
.section-tab:hover .section-tab-actions { opacity: 1; }

.section-tab-btn {
  width: 16px; height: 16px;
  border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px;
  color: var(--clr-text-2);
  transition: background var(--t), color var(--t);
  flex-shrink: 0;
}
.section-tab-btn:hover { background: var(--clr-border); color: var(--clr-text); }
.section-tab-btn[data-action="delete"]:hover { background: rgba(239,68,68,0.12); color: var(--prio-high); }

.section-tab-rename-input {
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-primary);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  color: var(--clr-text);
  padding: 2px 6px;
  width: 100px;
  outline: none;
}


.section-new-btn {
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-text-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex-shrink: 0;
  transition: background var(--t), color var(--t);
}
.section-new-btn:hover { background: var(--clr-bg); color: var(--clr-primary); }

/* ═══════════════════════════════════════════════════
   v2 — Page index
═══════════════════════════════════════════════════ */
#page-index {
  width: var(--page-index-w);
  min-width: var(--page-index-w);
  background: var(--clr-surface);
  border-right: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
}

#page-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 6px 4px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  scrollbar-width: thin;
  scrollbar-color: var(--clr-border) transparent;
}

.page-item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 7px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-text);
  transition: background var(--t);
  min-width: 0;
}
.page-item:hover { background: var(--clr-bg); }
.page-item.active { background: var(--clr-primary-lt); color: var(--clr-primary); }

.page-item-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-item-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  flex-shrink: 0;
  transition: opacity var(--t);
}
.page-item:hover .page-item-actions { opacity: 1; }

.page-action-btn {
  width: 18px; height: 18px;
  border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px;
  color: var(--clr-text-2);
  transition: background var(--t), color var(--t);
}
.page-action-btn:hover { background: var(--clr-border); color: var(--clr-text); }
.page-action-btn[data-action="rename"]:hover { color: var(--clr-primary); background: var(--clr-primary-lt); }
.page-action-btn[data-action="delete"]:hover { color: var(--prio-high); background: rgba(239,68,68,0.1); }

.page-rename-input {
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  color: var(--clr-text);
  padding: 2px 5px;
  width: 100%;
  outline: none;
}

#new-page-btn {
  padding: 9px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--clr-text-2);
  text-align: left;
  border-top: 1px solid var(--clr-border);
  flex-shrink: 0;
  transition: background var(--t), color var(--t);
}
#new-page-btn:hover { background: var(--clr-bg); color: var(--clr-primary); }

/* ═══════════════════════════════════════════════════
   v2 — Page canvas
═══════════════════════════════════════════════════ */
#page-canvas {
  flex: 1;
  overflow-x: auto;
  overflow-y: auto;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--clr-bg);
  scrollbar-width: thin;
  scrollbar-color: var(--clr-border) transparent;
}

/* ═══════════════════════════════════════════════════
   v2 — List boxes
═══════════════════════════════════════════════════ */
.list-box {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  width: 280px;
  min-width: 280px;
  border-top: 4px solid var(--card-color, var(--clr-primary));
  box-shadow: 0 2px 10px rgba(0,0,0,0.07), 0 1px 3px rgba(0,0,0,0.04);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  max-height: calc(100vh - var(--topbar-h) - var(--section-bar-h) - 48px);
  overflow: hidden;
  transition: box-shadow var(--t);
}
.list-box:hover { box-shadow: 0 6px 22px rgba(0,0,0,0.10), 0 2px 6px rgba(0,0,0,0.05); }

.list-box-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 14px 10px;
  flex-shrink: 0;
}
.list-box-icon { font-size: 20px; flex-shrink: 0; line-height: 1; }
.list-box-name {
  flex: 1;
  font-size: 14px;
  font-weight: 800;
  color: var(--clr-text);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.list-box-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  flex-shrink: 0;
  transition: opacity var(--t);
}
.list-box:hover .list-box-actions { opacity: 1; }
.list-box-action {
  width: 26px; height: 26px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  color: var(--clr-text-2);
  transition: background var(--t), color var(--t);
}
.list-box-action:hover { background: var(--clr-bg); color: var(--clr-text); }
.list-box-action.delete:hover { color: var(--prio-high); }

.list-box-body {
  flex: 1;
  overflow-y: auto;
  padding: 0 10px;
  scrollbar-width: thin;
  scrollbar-color: var(--clr-border) transparent;
}

.box-todo-row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 4px;
  border-radius: 7px;
  transition: background var(--t);
  min-width: 0;
}
.box-todo-row:hover { background: rgba(0,0,0,0.03); }

.box-todo-check {
  width: 17px; height: 17px;
  border-radius: 50%;
  border: 2px solid var(--clr-border);
  flex-shrink: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t), border-color var(--t), transform var(--t);
}
.box-todo-check:hover { border-color: var(--clr-done); transform: scale(1.1); }
.box-todo-check.checked { background: var(--clr-done); border-color: var(--clr-done); }
.box-todo-check.checked::after {
  content: '';
  display: block;
  width: 4px; height: 6px;
  border: 2px solid #fff;
  border-top: none; border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
  border-radius: 1px;
}

.box-todo-title {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-text);
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  transition: color var(--t);
}
.box-todo-title:hover { color: var(--clr-primary); }
.box-todo-done .box-todo-title {
  text-decoration: line-through;
  color: var(--clr-text-2);
  opacity: 0.7;
}
.box-todo-done .box-todo-title:hover { color: var(--clr-text-2); }

.box-done-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 4px 3px;
  font-size: 11px;
  font-weight: 700;
  color: var(--clr-text-2);
  cursor: pointer;
  user-select: none;
  border-top: 1px solid var(--clr-border);
  margin-top: 4px;
  transition: color var(--t);
}
.box-done-toggle:hover { color: var(--clr-text); }
.box-done-toggle.expanded::before { content: '▾ '; }
.box-done-toggle:not(.expanded)::before { content: '▸ '; }

.list-box-footer {
  padding: 8px 10px 12px;
  flex-shrink: 0;
}
.box-add-btn {
  display: block;
  width: 100%;
  padding: 7px 10px;
  background: transparent;
  border: 1.5px dashed var(--clr-border);
  border-radius: 8px;
  color: var(--clr-text-2);
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.box-add-btn:hover {
  border-color: var(--card-color, var(--clr-primary));
  color: var(--card-color, var(--clr-primary));
  background: rgba(0,0,0,0.02);
}
.box-add-input {
  display: block;
  width: 100%;
  padding: 7px 10px;
  border: 1.5px solid var(--card-color, var(--clr-primary));
  border-radius: 8px;
  background: var(--clr-surface);
  color: var(--clr-text);
  font-size: 13px;
  font-family: inherit;
  box-sizing: border-box;
  outline: none;
}

.list-box-new {
  background: transparent;
  border: 2.5px dashed var(--clr-border);
  border-top: 2.5px dashed var(--clr-border);
  box-shadow: none;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  color: var(--clr-text-2);
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  transition: border-color var(--t), color var(--t), background var(--t);
}
.list-box-new:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: var(--clr-primary-lt);
}
.list-box-new .plus { font-size: 28px; font-weight: 300; }

/* ═══════════════════════════════════════════════════
   v2 — Dark/mono theme overrides
═══════════════════════════════════════════════════ */
[data-theme="dark"] .list-box { box-shadow: 0 2px 12px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.3); }
[data-theme="dark"] .list-box:hover { box-shadow: 0 6px 24px rgba(0,0,0,0.55); }
[data-theme="dark"] .box-todo-row:hover { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .box-add-btn:hover { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .project-dropdown { box-shadow: 0 8px 24px rgba(0,0,0,.4); }

[data-theme="mono"] .list-box { border-top-color: #111 !important; box-shadow: 0 1px 4px rgba(0,0,0,0.08); }
[data-theme="mono"] .list-box:hover { box-shadow: 0 4px 14px rgba(0,0,0,0.11); }
[data-theme="mono"] .list-box-icon { filter: grayscale(1); }
[data-theme="mono"] .section-tab.active { background: #e2e2e2; color: #111; }
[data-theme="mono"] .page-item.active { background: #e2e2e2; color: #111; }