.dashboard-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 8px;
  box-shadow: var(--shadow-sm);
}

.dashboard-nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  margin-right: 8px;
}

.dashboard-nav-logo {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.dashboard-nav-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

/* ── Layout ── */
.app-layout {
  display: flex;
  height: calc(100vh - 52px);
  overflow: hidden;
}

/* ── Linkerzijbalk ── */
.sidebar {
  width: 280px;
  min-width: 280px;
  height: calc(100vh - 52px);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  display: none;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  text-decoration: none;
}

.sidebar-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}

.sidebar-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.sidebar-brand-name {
  font-size: 15px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.sidebar-brand-sub {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── Repertoire sectie in sidebar ── */
.sidebar-repertoire {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 12px 0 0;
}

.sidebar-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px 8px;
  flex-shrink: 0;
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.sidebar-add-btn {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  line-height: 1;
}

.sidebar-add-btn:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ── Sorteercontrols ── */
.sort-controls {
  padding: 0 12px 8px;
  flex-shrink: 0;
}

.sort-select {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2394a3b8'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 24px;
}

.sort-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ── Stukkenlijst ── */
.pieces-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 8px 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.piece-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
  border: 1px solid transparent;
  margin-bottom: 2px;
}

.piece-item:hover {
  background: var(--surface-2);
}

.piece-item.active {
  background: var(--accent-light);
  border-color: rgba(30, 110, 181, 0.2);
}

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

.piece-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.piece-item.active .piece-item-title {
  color: var(--accent);
}

.piece-item-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 1px;
}

.due-badge {
  flex-shrink: 0;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  background: var(--accent-2);
  color: white;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
}

.due-badge.zero {
  background: var(--surface-3);
  color: var(--text-muted);
}

/* ── Hoofdpaneel ── */
.main-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-body);
}

.main-panel-header {
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  min-height: 56px;
}

.main-panel-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.main-panel-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.main-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

/* ── Practice Today sectie ── */
.today-section {
  margin-bottom: 28px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.section-heading {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.section-count-badge {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  background: var(--accent-light);
  color: var(--accent);
}

.section-count-badge.orange {
  background: var(--accent-2-light);
  color: var(--accent-2);
}

/* ── Due sections lijst ── */
.due-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.due-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: box-shadow 0.15s, border-color 0.15s;
  cursor: pointer;
}

.due-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.due-item-left {
  flex: 1;
  min-width: 0;
}

.due-item-piece {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}

.due-item-section {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.due-item-meta {
  display: flex;
  gap: 8px;
  margin-top: 4px;
  flex-wrap: wrap;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 7px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  background: var(--surface-3);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.meta-pill.green {
  background: var(--success-light);
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.2);
}

.meta-pill.orange {
  background: var(--warning-light);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.2);
}

.meta-pill.red {
  background: var(--danger-light);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.2);
}

.due-item-right {
  flex-shrink: 0;
}

/* ── Sectieslijst van geselecteerd stuk ── */
.sections-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.section-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: background 0.15s, border-color 0.15s;
  position: relative;
}

.section-row:hover {
  background: var(--surface-2);
  border-color: var(--border-strong);
}

.section-row-name {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.section-row-stability {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.section-row-next {
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 1;
  min-width: 48px;
  text-align: right;
}

.section-row-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.15s;
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 2px 4px;
  box-shadow: var(--shadow-sm);
}

.section-row:hover .section-row-actions {
  opacity: 1;
}

.section-action-btn {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.section-action-btn:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.section-action-btn.danger:hover {
  background: var(--danger);
  border-color: var(--danger);
}

/* ── Streak stats onderaan sidebar ── */
.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  display: flex;
  gap: 8px;
}

.streak-stat {
  flex: 1;
  text-align: center;
  padding: 8px;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.streak-stat-value {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  font-family: var(--font-mono);
  line-height: 1;
}

.streak-stat-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-top: 3px;
}

/* ── Empty states ── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.6;
}

.empty-state-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.empty-state-text {
  font-size: 13px;
  line-height: 1.5;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .dashboard-nav {
    padding: 0 12px;
    gap: 4px;
    overflow-x: auto;
  }
  .sidebar {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .app-layout {
    flex-direction: column;
    height: auto;
  }
  .main-panel {
    height: auto;
  }
  .sidebar-repertoire {
    max-height: 240px;
  }
}

/* ── Archief toggle ── */
.archive-toggle-btn {
  width: 100%;
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s, background 0.15s;
  flex-shrink: 0;
}

.archive-toggle-btn:hover {
  color: var(--text-secondary);
  background: var(--surface-2);
}

.archive-toggle-icon {
  font-size: 10px;
  transition: transform 0.2s;
}

.archive-toggle-btn.open .archive-toggle-icon {
  transform: rotate(90deg);
}

/* ── Gearchiveerde stukken in de lijst ── */
.piece-item.archived .piece-item-title {
  color: #020617;
  font-weight: 700;
  text-decoration: line-through;
}

.piece-item.archived .piece-item-meta {
  color: var(--text-secondary);
}

.piece-item.archived .due-badge {
  display: none;
}

.archived-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: 6px 12px 4px;
  flex-shrink: 0;
}

/* ── Gearchiveerde secties in stukdetail ── */
.archived-sections-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  margin-bottom: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.archived-sections-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.section-row.archived {
  opacity: 0.8;
}

.section-row.archived .section-row-name {
  text-decoration: line-through;
  color: var(--accent-2);
}

.btn-restore {
  background: var(--success-light);
  border-color: rgba(16,185,129,0.3);
  color: var(--success);
}

.btn-restore:hover {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

/* ── Overdue indicators ── */
.due-item.overdue-critical {
  border-color: var(--danger);
  background: rgba(239,68,68,0.03);
}

.due-item.overdue-critical:hover {
  border-color: var(--danger);
  box-shadow: 0 4px 16px rgba(239,68,68,0.15);
}

.due-item.overdue-warning {
  border-color: var(--warning);
}

.overdue-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.overdue-badge.due-today {
  background: var(--accent-2-light);
  color: var(--accent-2);
  border: 1px solid rgba(232,100,10,0.25);
}

.overdue-badge.late-mild {
  background: var(--warning-light);
  color: #92400e;
  border: 1px solid rgba(245,158,11,0.3);
}

.overdue-badge.late-serious {
  background: var(--danger-light);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,0.3);
  animation: pulse-badge 2s ease-in-out infinite;
}

.overdue-badge.late-critical {
  background: var(--danger);
  color: white;
  border: 1px solid var(--danger);
  animation: pulse-badge 1.5s ease-in-out infinite;
}

@keyframes pulse-badge {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ── Overdue teller in sidebar badge ── */
.due-badge.overdue {
  background: var(--danger);
}

.meta-pill-clickable {
  cursor: pointer;
  transition: background 0.15s, color 0.15s,
              border-color 0.15s;
}

.meta-pill-clickable:hover {
  background: var(--accent-light);
  color: var(--accent);
  border-color: rgba(30,110,181,0.3);
}