:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #e0e2e7;
  --text: #1c1f26;
  --text-muted: #6b7280;
  --accent: #ff5a1f;
  --accent-hover: #e64d15;
  --accent-soft: #fff0ea;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1d2026;
    --border: #2c3038;
    --text: #eceef1;
    --text-muted: #9aa0aa;
    --accent: #ff6a35;
    --accent-hover: #ff7f52;
    --accent-soft: #2a1f1a;
    --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 12px;
}

.topbar h1 {
  font-size: 1.3rem;
  margin: 0;
}

.tabs {
  display: flex;
  gap: 8px;
}

.tab-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.15s ease;
}

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

.tab-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px 60px;
}

.tab-panel {
  display: none;
}

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

/* ---------- Apparatuur tab ---------- */

.panel-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

#equipment-search {
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  min-width: 220px;
  font-size: 0.9rem;
}

.category-filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.category-chip {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  white-space: nowrap;
}

.category-chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.btn.add-equipment-btn,
.btn.deselect-all-btn {
  width: auto;
  white-space: nowrap;
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 999px;
  margin-top: 0;
}

.equipment-count {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.muscle-filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.muscle-chip {
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px dashed var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  white-space: nowrap;
}

.muscle-chip.covered {
  border-style: solid;
  border-color: #2fa84f;
  color: #2fa84f;
}

.muscle-chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  border-style: solid;
  color: var(--accent);
  font-weight: 600;
}

.sync-status {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 10px;
}

.sync-status-text {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.sync-status-text.ok {
  color: #2fa84f;
}

.sync-status-text.warn {
  color: #ff9a1f;
}

.sync-status-text.busy {
  color: var(--text-muted);
}

.sync-status .link-btn {
  padding: 0;
  align-self: flex-start;
  font-size: 0.78rem;
}

.link-btn {
  display: inline-block;
  border: none;
  background: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.82rem;
  padding: 0 0 12px;
  text-decoration: underline;
}

.card-delete-btn {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 2;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
}

.card-delete-btn:hover {
  color: #d33;
  border-color: #d33;
}

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.equipment-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 12px;
  text-align: center;
  cursor: pointer;
  user-select: none;
  transition: border-color 0.15s ease, transform 0.1s ease;
  position: relative;
}

.equipment-card:hover {
  transform: translateY(-2px);
}

.equipment-card.checked {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.visual {
  display: block;
  position: relative;
  background: var(--bg);
  border-radius: 8px;
}

.visual img {
  display: block;
  object-fit: cover;
  border-radius: 8px;
}

/* Line-art diagrams (SVG) have a transparent background and only draw dark strokes,
   so they need "contain" instead of "cover" plus breathing room. The background lives
   on .visual (the container), NOT on the img itself -- if it were on the img, the
   dark-mode invert filter below would flip that background from dark to light too,
   defeating the point. Because the img background stays transparent, only the black
   strokes get inverted to white, and the (unfiltered) dark container shows through. */
.visual img[src$=".svg"],
.visual img[src$=".png"] {
  object-fit: contain;
  padding: 12%;
  box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
  .visual img[src$=".svg"],
  .visual img[src$=".png"] {
    filter: invert(1);
  }
}

.visual .icon-fallback {
  display: none;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg);
}

.visual-card {
  margin: 0 auto 8px;
  width: 100%;
  aspect-ratio: 1 / 1;
}

.visual-card img,
.visual-card .icon-fallback {
  width: 100%;
  height: 100%;
  font-size: 2rem;
}

.visual-row {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
}

.visual-row img,
.visual-row .icon-fallback {
  width: 46px;
  height: 46px;
  font-size: 1.5rem;
}

.equipment-card .name {
  font-size: 0.85rem;
  font-weight: 600;
  display: block;
}

.equipment-card .category-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
  margin-top: 2px;
}

.equipment-card .check-indicator {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--surface);
  z-index: 2;
}

.equipment-card.checked .check-indicator {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
  font-size: 12px;
  line-height: 14px;
}

/* ---------- Workouts tab ---------- */

.workouts-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px;
  align-items: start;
}

.days-sidebar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  position: sticky;
  top: 20px;
}

.days-sidebar h2 {
  font-size: 1rem;
  margin: 0 0 10px;
}

.days-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.day-list-item {
  display: flex;
  align-items: center;
  gap: 6px;
  border-radius: 8px;
  overflow: hidden;
}

.day-list-item button.day-select {
  flex: 1;
  text-align: left;
  border: none;
  background: transparent;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--text);
  font-size: 0.9rem;
  border-radius: 8px;
}

.day-list-item.active button.day-select {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.day-list-item button.day-select:hover {
  background: var(--bg);
}

.day-delete-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 4px 8px;
}

.day-delete-btn:hover {
  color: #d33;
}

.btn {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  text-align: center;
  display: block;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  margin-top: 8px;
}

.btn-secondary:hover {
  background: var(--bg);
}

.file-btn {
  cursor: pointer;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 14px 0 0;
}

.day-detail {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  min-height: 300px;
}

.empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 60px 20px;
}

.day-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.day-title-input {
  font-size: 1.2rem;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--text);
  padding: 4px 6px;
  border-radius: 6px;
  min-width: 120px;
}

.day-title-input:focus {
  outline: 1px solid var(--accent);
  background: var(--bg);
}

.day-detail-actions {
  display: flex;
  gap: 8px;
}

.day-detail-actions .btn {
  width: auto;
}

.exercise-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.exercise-row {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  background: var(--bg);
}


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

.exercise-row .info .ex-name {
  font-weight: 700;
  display: block;
}

.tier-badge {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 2px 7px;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 6px;
  white-space: nowrap;
}

.tier-badge.tier-1 {
  background: rgba(255, 90, 31, 0.18);
  color: var(--accent);
}

.tier-badge.tier-2 {
  background: rgba(255, 90, 31, 0.1);
  color: var(--accent);
}

.tier-badge.tier-3 {
  background: rgba(80, 130, 255, 0.12);
  color: #6f95ff;
}

.tier-badge.tier-4 {
  background: rgba(47, 168, 79, 0.14);
  color: #2fa84f;
}

.tier-badge.tier-5 {
  background: rgba(255, 154, 31, 0.15);
  color: #ff9a1f;
}

.day-detail-actions .btn {
  padding: 6px 12px;
  font-size: 0.8rem;
  margin-top: 0;
}

.exercise-row .info .ex-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.exercise-row .info .ex-notes {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 2px;
}

.exercise-row .row-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 6px;
  width: 30px;
  height: 30px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.icon-btn:hover {
  color: var(--text);
  background: var(--bg);
}

.icon-btn.danger:hover {
  color: #d33;
  border-color: #d33;
}

.add-exercise-btn {
  margin-top: 16px;
  width: auto;
  display: inline-block;
}

/* ---------- Modal ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
}

.modal h3 {
  margin-top: 0;
}

.modal-hint {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: -8px;
  margin-bottom: 16px;
}

.modal form label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.modal form input,
.modal form select,
.modal form textarea {
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
}

/* Oefeningkiezer: zoekveld boven een uitgeklapte lijst, zodat je de treffers
   meteen ziet in plaats van te moeten scrollen door een dropdown. */
#ex-search {
  margin-bottom: 6px;
}

#ex-picker {
  margin-top: 0;
  padding: 4px;
}

#ex-picker option {
  padding: 5px 6px;
  border-radius: 4px;
}

#ex-picker optgroup {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.checkbox-inline {
  display: flex !important;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}

.checkbox-inline input {
  width: auto !important;
  margin: 0 !important;
}

.checkbox-chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.checkbox-chip {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  background: var(--bg);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text);
}

.checkbox-chip:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.form-row {
  display: flex;
  gap: 10px;
}

.form-row label {
  flex: 1;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}

.modal-actions .btn {
  width: auto;
}

@media (max-width: 700px) {
  .workouts-layout {
    grid-template-columns: 1fr;
  }
  .days-sidebar {
    position: static;
  }
}

/* ---------- Voortgang bijhouden (inline in de dagweergave) ---------- */

.modal-wide {
  max-width: 640px;
}

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

.progress-modal-header h3 {
  margin: 0;
}

.exercise-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  overflow: hidden;
}

.exercise-item .exercise-row {
  border: none;
  border-radius: 0;
  background: transparent;
  cursor: pointer;
}

.expand-chevron {
  color: var(--text-muted);
  font-size: 0.75rem;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.exercise-item.expanded .expand-chevron {
  transform: rotate(90deg);
}

.exercise-log-panel {
  display: none;
  padding: 0 14px 14px;
  border-top: 1px solid var(--border);
}

.exercise-item.expanded .exercise-log-panel {
  display: block;
  padding-top: 14px;
}

.session-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
  flex-wrap: wrap;
}

.session-date-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.session-date-label input {
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.85rem;
}

.session-bar .btn {
  width: auto;
  margin-left: auto;
}

.copy-last-btn {
  width: auto;
  white-space: nowrap;
  padding: 6px 12px;
  font-size: 0.78rem;
  margin: 0 0 10px;
  display: inline-block;
}

.exercise-instructions {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0 0 12px;
  font-style: italic;
}

.suggestion-badge {
  font-size: 0.82rem;
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 12px;
  line-height: 1.4;
}

.suggestion-badge.none {
  background: var(--surface);
  color: var(--text-muted);
}

.suggestion-badge.ontrack {
  background: rgba(80, 130, 255, 0.12);
  color: #6f95ff;
}

.suggestion-badge.increase-soon {
  background: rgba(47, 168, 79, 0.12);
  color: #2fa84f;
}

.suggestion-badge.increase {
  background: rgba(47, 168, 79, 0.2);
  color: #2fa84f;
  font-weight: 600;
}

.suggestion-badge.warning {
  background: rgba(255, 154, 31, 0.15);
  color: #ff9a1f;
}

.set-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
}

.set-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.set-row-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  width: 44px;
  flex-shrink: 0;
}

.set-row-x {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.weight-step-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 6px;
  width: 26px;
  height: 30px;
  cursor: pointer;
  flex-shrink: 0;
}

.set-weight-input,
.set-reps-input {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 0.85rem;
  min-width: 0;
}

.set-weight-input {
  width: 70px;
}

.set-reps-input {
  width: 60px;
}

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

.rest-timer-btn {
  width: auto;
  white-space: nowrap;
  padding: 6px 12px;
  font-size: 0.78rem;
  margin: 0;
}

.rest-timer-display {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  min-width: 40px;
}

.rest-timer-display.done {
  color: #2fa84f;
}

.mini-history-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 40px;
  padding-top: 4px;
}

.history-bar {
  flex: 1;
  max-width: 14px;
  background: var(--border);
  border-radius: 2px 2px 0 0;
  min-height: 3px;
}

.history-bar.pr {
  background: var(--accent);
}

.mini-history-empty {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0;
}

.save-confirm {
  color: #2fa84f;
  font-size: 0.85rem;
  font-weight: 600;
  margin-right: auto;
}

.progress-history-heading {
  font-size: 0.95rem;
  margin: 20px 0 10px;
}

.history-session-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

.history-session-row:first-child {
  border-top: none;
}

.overview-weekly-chart {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 100px;
  padding: 8px 4px 0;
  overflow-x: auto;
}

.overview-bar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  width: 32px;
}

.overview-bar {
  flex: none;
  max-width: 22px;
  width: 22px;
}

.overview-bar-label {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.stale-badge {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-muted);
  white-space: nowrap;
}

.stale-badge.overdue {
  background: rgba(255, 154, 31, 0.15);
  color: #ff9a1f;
}

.stale-badge.never {
  background: rgba(80, 130, 255, 0.12);
  color: #6f95ff;
}