/* ========================================
   EVYD Product Roadmap — Styles
   ======================================== */

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

:root {
  --label-width: 160px;
  --row-height: 64px;
  --bar-height: 52px;
  --bar-radius: 7px;
  --header-h: 56px;
  --month-header-h: 38px;

  --bg-page: #F0F4F8;
  --bg-toolbar: #0F172A;
  --bg-surface: #FFFFFF;
  --bg-header-row: #F8FAFC;
  --bg-module-header: #EFF6FF;

  --border-light: #E2E8F0;
  --border-medium: #CBD5E1;

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-white: #FFFFFF;

  --accent-blue: #3B82F6;
  --accent-blue-dark: #1D4ED8;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.14), 0 4px 12px rgba(0,0,0,.08);

  --transition: 0.15s ease;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
               'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 13px;
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  flex-direction: column;
}

/* ---------- Toolbar ---------- */
.toolbar {
  height: var(--header-h);
  background: var(--bg-toolbar);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,.3);
  z-index: 100;
  position: relative;
}

.toolbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 180px;
}

.brand-icon {
  width: 22px;
  height: 22px;
  color: #60A5FA;
  flex-shrink: 0;
}

.brand-title {
  font-size: 15px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.toolbar-year {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 8px;
  padding: 4px 8px;
  margin: 0 auto;
}

.year-nav-btn {
  background: none;
  border: none;
  color: #94A3B8;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 0 6px;
  border-radius: 4px;
  transition: color var(--transition), background var(--transition);
}
.year-nav-btn:hover { color: #fff; background: rgba(255,255,255,.1); }

.year-label {
  font-size: 18px;
  font-weight: 700;
  color: #FFFFFF;
  min-width: 52px;
  text-align: center;
  letter-spacing: -0.02em;
}

.version-indicator {
  font-size: 11px;
  color: rgba(255,255,255,.38);
  letter-spacing: 0.02em;
  white-space: nowrap;
  margin-left: auto;
  padding-right: 12px;
  font-variant-numeric: tabular-nums;
}

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

.btn-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 7px;
  color: #CBD5E1;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn-toolbar svg { width: 14px; height: 14px; flex-shrink: 0; }
.btn-toolbar:hover {
  background: rgba(255,255,255,.15);
  color: #FFFFFF;
  border-color: rgba(255,255,255,.25);
}

.btn-primary {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--accent-blue);
  border: none;
  border-radius: 7px;
  color: #FFFFFF;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn-primary svg { width: 14px; height: 14px; flex-shrink: 0; }
.btn-primary:hover { background: var(--accent-blue-dark); box-shadow: 0 2px 8px rgba(59,130,246,.4); }

/* ---------- Roadmap Wrapper ---------- */
.roadmap-wrapper {
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
  min-height: 0;
  background: var(--bg-page);
  padding-bottom: 40px;
}

/* ---------- Grid Row Base ---------- */
.grid-row {
  display: flex;
  min-width: 800px;
}

.label-col {
  width: var(--label-width);
  min-width: var(--label-width);
  flex-shrink: 0;
  overflow: hidden;
}

/* ---------- Month Header (sticky) ---------- */
.roadmap-header-row {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  min-width: 800px;
  background: var(--bg-surface);
  border-bottom: 2px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.header-corner {
  background: #1E293B;
  display: flex;
  align-items: flex-end;
  padding: 8px 12px;
  border-right: 1px solid #334155;
  position: relative;
}

/* Column resize handle — right edge of header corner */
.label-col-resize-handle {
  position: absolute;
  top: 0;
  right: -4px;
  width: 8px;
  height: 100%;
  cursor: col-resize;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
}
.label-col-resize-handle::after {
  content: '';
  width: 3px;
  height: 20px;
  background: rgba(148,163,184,.5);
  border-radius: 2px;
  transition: background 0.15s;
}
.label-col-resize-handle:hover::after,
.label-col-resize-handle.resizing::after {
  background: #3B82F6;
}

.corner-text {
  font-size: 11px;
  font-weight: 600;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.months-header {
  flex: 1;
  display: flex;
  background: #1E293B;
}

.month-header-cell {
  flex: 1;
  height: var(--month-header-h);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: #94A3B8;
  letter-spacing: 0.04em;
  border-right: 1px solid #334155;
  position: relative;
  transition: background var(--transition), color var(--transition);
  user-select: none;
}
.month-header-cell:last-child { border-right: none; }
.month-header-cell.current-month {
  color: #60A5FA;
  background: rgba(96,165,250,.08);
}
.month-header-cell.current-month::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  height: 2px;
  background: #3B82F6;
}

/* ---------- Module Section ---------- */
.module-section {
  border-bottom: 1px solid var(--border-light);
}

.module-header-row {
  display: flex;
  min-width: 800px;
  background: var(--bg-module-header);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
  border-bottom: 1px solid var(--border-light);
}
.module-header-row:hover { background: #E0EEFF; }

.module-label-cell {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: #EFF6FF;
  border-right: 1px solid var(--border-medium);
  /* border-left set inline for color accent */
}

.collapse-icon {
  font-size: 10px;
  color: var(--text-muted);
  width: 10px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.module-name-text {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-primary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Outer group header — description overlay in timeline area */
.outer-header-timeline {
  position: relative;
  flex: 1;
  display: flex;
}
.outer-header-desc {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  padding: 0 16px;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}
.outer-header-desc span {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  opacity: 0.75;
}
.outer-header-desc span:hover {
  opacity: 1;
  text-decoration: underline dotted;
}

.pillar-value-input {
  flex: 1;
  min-width: 0;
  font-size: 11px;
  color: var(--text-primary);
  background: rgba(255,255,255,.9);
  border: 1px solid #3B82F6;
  border-radius: 3px;
  padding: 2px 6px;
  outline: none;
  width: 100%;
}

/* Inner group (second level) */
.inner-group {
  border-bottom: 1px solid var(--border-light);
}
.inner-header-row {
  display: flex;
  min-width: 800px;
  background: #F8FAFC;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition);
}
.inner-header-row:hover { background: #F1F5F9; }
.inner-label-cell {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px 5px 50px;
  background: #F8FAFC;
  border-right: 1px solid var(--border-medium);
}
.inner-name-text {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-secondary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.inner-header-timeline {
  flex: 1;
  display: flex;
}
.inner-header-timeline .month-cell {
  flex: 1;
  height: 32px;
  border-right: 1px solid var(--border-light);
}
.inner-header-timeline .month-cell:last-child { border-right: none; }

.module-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(148,163,184,.15);
  border-radius: 10px;
  padding: 1px 7px;
  flex-shrink: 0;
}

/* Module drag handle */
.module-drag-handle {
  cursor: grab;
  font-size: 14px;
  color: var(--text-muted);
  opacity: 0.35;
  flex-shrink: 0;
  padding: 0 2px;
  user-select: none;
  transition: opacity var(--transition);
  line-height: 1;
}
.module-label-cell:hover .module-drag-handle { opacity: 0.75; }
.module-drag-handle:active { cursor: grabbing; opacity: 1; }

/* Module rename button — hidden until hover */
.module-rename-btn {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 13px;
  padding: 2px 4px;
  border-radius: 4px;
  line-height: 1;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition);
}
.module-label-cell:hover .module-rename-btn { display: flex; }
.module-rename-btn:hover { background: rgba(59,130,246,.12); color: #3B82F6; }

/* Inline rename input */
.module-name-input {
  flex: 1;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-primary);
  background: white;
  border: 1.5px solid #3B82F6;
  border-radius: 4px;
  padding: 1px 6px;
  outline: none;
  min-width: 0;
  font-family: inherit;
}

/* Module being dragged */
.module-section.module-being-dragged { opacity: 0.35; pointer-events: none; }

/* Drop position indicators */
.module-section.drop-before { box-shadow: 0 -3px 0 0 #3B82F6; }
.module-section.drop-after  { box-shadow: 0  3px 0 0 #3B82F6; }

/* Module header timeline cells */
.module-header-timeline {
  flex: 1;
  display: flex;
  position: relative;
  height: 36px;
}

.module-header-timeline .month-cell {
  flex: 1;
  border-right: 1px solid #DBEAFE;
  background: transparent;
}
.module-header-timeline .month-cell:last-child { border-right: none; }

/* ---------- Items Row ---------- */
.items-row {
  display: flex;
  min-width: 800px;
  background: var(--bg-surface);
  position: relative;
}

.items-label-col {
  background: #FAFBFC;
  border-right: 1px solid var(--border-light);
}

/* Timeline area inside items row */
.items-timeline {
  flex: 1;
  position: relative;
  overflow: visible;
}

.month-cells-bg {
  position: absolute;
  inset: 0;
  display: flex;
}

.month-cell {
  flex: 1;
  border-right: 1px solid var(--border-light);
}
.month-cell:last-child { border-right: none; }
.month-cell.alt { background: rgba(248,250,252,.5); }
.month-cell.current-month-col {
  background: rgba(59,130,246,.03);
}

.items-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* ---------- Item Bar ---------- */
.item-bar {
  position: absolute;
  height: var(--bar-height);
  border-radius: var(--bar-radius);
  cursor: grab;
  pointer-events: all;
  display: flex;
  align-items: center;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.10);
  transition: box-shadow 0.12s ease, opacity 0.12s ease, transform 0.12s ease;
  user-select: none;
  min-width: 2px;
}
.item-bar:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,.2), 0 2px 6px rgba(0,0,0,.12);
  transform: translateY(-1px);
  z-index: 10 !important;
}
.item-bar.dragging {
  cursor: grabbing;
  opacity: 0.88;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
  transform: translateY(-2px);
  z-index: 100 !important;
}
.item-bar.resizing {
  cursor: ew-resize;
  opacity: 0.88;
  z-index: 100 !important;
}

.bar-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 7px 6px 6px 10px;
  overflow: hidden;
  min-width: 0;
  gap: 4px;
}

.bar-title {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,.95);
  /* Two-line clamp */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.35;
  min-width: 0;
}

/* Bottom meta row: chips + duration */
.bar-meta-row {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.bar-duration {
  font-size: 10px;
  font-weight: 500;
  color: rgba(255,255,255,.65);
  flex-shrink: 0;
  background: rgba(0,0,0,.12);
  border-radius: 3px;
  padding: 1px 5px;
  line-height: 14px;
  margin-left: auto;  /* push to right when no chips */
}

.bar-resize-handle {
  width: 8px;
  height: 100%;
  flex-shrink: 0;
  cursor: ew-resize;
  background: rgba(0,0,0,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  position: relative;
}
.bar-resize-handle::after {
  content: '';
  width: 2px;
  height: 14px;
  background: rgba(255,255,255,.5);
  border-radius: 1px;
}
.bar-resize-handle:hover { background: rgba(0,0,0,.25); }

/* ---------- Team Chips on Bar ---------- */
.bar-team-avatars {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.team-chip {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  font-size: 9px;
  font-weight: 800;
  color: rgba(255,255,255,.95);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1.5px solid rgba(255,255,255,.35);
  line-height: 1;
  letter-spacing: 0;
  box-shadow: 0 1px 3px rgba(0,0,0,.25);
  cursor: default;
}

/* Dev Type Square Badge on Bar */
.devtype-badge {
  height: 18px;
  min-width: 18px;
  border-radius: 3px;
  padding: 0 5px;
  font-size: 9px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: 0.02em;
  border: 1.5px solid rgba(255,255,255,.3);
  box-shadow: 0 1px 3px rgba(0,0,0,.25);
  cursor: default;
  line-height: 1;
}

.team-chip-more {
  height: 18px;
  min-width: 18px;
  border-radius: 9px;
  padding: 0 5px;
  font-size: 9px;
  font-weight: 700;
  color: rgba(255,255,255,.8);
  background: rgba(0,0,0,.22);
  border: 1px solid rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: 0;
}

/* ---------- Today Line ---------- */
.today-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(239,68,68,.7);
  pointer-events: none;
  z-index: 5;
  transform: translateX(-1px);
}
.today-line::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #EF4444;
}
.today-line-header {
  background: rgba(239,68,68,.4);
}
.today-line-header::before { display: none; }

/* ---------- Empty State ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 80px 24px;
  text-align: center;
}

.empty-icon svg {
  width: 72px;
  height: 72px;
  color: #CBD5E1;
}

.empty-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-secondary);
}

.empty-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  max-width: 340px;
  line-height: 1.6;
}

.empty-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

/* Override btn-toolbar inside light-background empty state */
.empty-state .btn-toolbar {
  background: white;
  border: 1.5px solid var(--border-medium);
  color: var(--text-secondary);
}
.empty-state .btn-toolbar:hover {
  background: #F1F5F9;
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.55);
  backdrop-filter: blur(3px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: fadeIn 0.15s ease;
}
.modal-overlay.hidden { display: none; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

.modal-box {
  background: var(--bg-surface);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.18s ease;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-light);
}

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

.modal-close-btn {
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
  padding: 4px;
}
.modal-close-btn svg { width: 14px; height: 14px; }
.modal-close-btn:hover { background: #F1F5F9; color: var(--text-primary); }

.modal-form {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
}

.required {
  color: #EF4444;
  margin-left: 2px;
}

.form-input {
  height: 36px;
  padding: 0 12px;
  border: 1.5px solid var(--border-light);
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--text-primary);
  background: var(--bg-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
}
.form-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}
.form-input:invalid:not(:placeholder-shown) {
  border-color: #EF4444;
}

.form-textarea {
  padding: 9px 12px;
  border: 1.5px solid var(--border-light);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-primary);
  background: var(--bg-surface);
  resize: vertical;
  outline: none;
  font-family: inherit;
  line-height: 1.5;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}

.form-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.input-with-suffix {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--border-light);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.input-with-suffix:focus-within {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}
.input-with-suffix .form-input {
  border: none;
  box-shadow: none;
  border-radius: 0;
  flex: 1;
}
.input-with-suffix .form-input:focus { box-shadow: none; }
.input-suffix {
  padding: 0 10px;
  font-size: 12px;
  color: var(--text-muted);
  background: #F8FAFC;
  border-left: 1px solid var(--border-light);
  height: 36px;
  display: flex;
  align-items: center;
  white-space: nowrap;
}

/* Form preview bar */
.form-preview {
  background: #F8FAFC;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 10px 12px;
}
.form-preview-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.form-preview-grid {
  position: relative;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  background: white;
  overflow: hidden;
  height: 60px; /* 5px top + 36px bar + 3px gap + 12px month labels + 4px bottom */
}
.form-preview-bar {
  height: 36px;
  border-radius: 3px;
  position: absolute;
  top: 4px;
  z-index: 1;
  transition: left 0.1s ease, width 0.1s ease, background 0.2s ease;
}
.form-preview-months {
  display: flex;
  border-top: 1px solid var(--border-light);
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
}
.form-preview-months span {
  flex: 1;
  text-align: center;
  font-size: 9px;
  color: var(--text-muted);
  padding: 2px 0;
  border-right: 1px solid var(--border-light);
}
.form-preview-months span:last-child { border-right: none; }

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 4px;
  border-top: 1px solid var(--border-light);
  margin-top: 4px;
}

.footer-right {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.btn-cancel {
  padding: 7px 16px;
  background: none;
  border: 1.5px solid var(--border-medium);
  border-radius: 7px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
.btn-cancel:hover { background: #F1F5F9; border-color: var(--text-muted); }

.btn-danger {
  padding: 7px 14px;
  background: none;
  border: 1.5px solid #FCA5A5;
  border-radius: 7px;
  color: #DC2626;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
.btn-danger:hover { background: #FEF2F2; border-color: #DC2626; }
.btn-danger.hidden { display: none; }

/* ---------- Item Tooltip ---------- */
.item-tooltip {
  position: fixed;
  z-index: 300;
  background: #1E293B;
  border: 1px solid #334155;
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  padding: 12px 14px;
  max-width: 300px;
  pointer-events: none;
  transition: opacity 0.1s ease;
}
.item-tooltip.hidden { display: none; }

.tt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 5px;
}

.tt-module {
  font-size: 10px;
  font-weight: 700;
  color: #94A3B8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.tt-duration {
  font-size: 11px;
  color: #64748B;
  background: rgba(255,255,255,.08);
  border-radius: 4px;
  padding: 1px 6px;
}

.tt-title {
  font-size: 13.5px;
  font-weight: 700;
  color: #F1F5F9;
  margin-bottom: 8px;
  line-height: 1.4;
}

.tt-section {
  margin-bottom: 6px;
}
.tt-section:last-of-type { margin-bottom: 8px; }

.tt-label {
  font-size: 10px;
  font-weight: 600;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.tt-text {
  font-size: 12px;
  color: #CBD5E1;
  line-height: 1.5;
}

/* ---------- Tooltip Collab Section ---------- */
.tt-collab-section {
  margin-bottom: 8px;
}

.tt-label-collab {
  display: flex;
  align-items: center;
  gap: 4px;
}
.tt-label-collab svg {
  opacity: .7;
  flex-shrink: 0;
}

.tt-collab-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 5px;
}

.tt-collab-chip {
  font-size: 11.5px;
  font-weight: 600;
  border-radius: 5px;
  border: 1px solid;
  padding: 2px 8px;
  line-height: 1.5;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* ---------- Field alias badge (e.g. "Description") ---------- */
.field-alias {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--text-muted);
  background: #F1F5F9;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 0px 5px;
  margin-left: 5px;
  letter-spacing: 0.02em;
  vertical-align: middle;
  font-style: normal;
}

/* ---------- Form Hint ---------- */
.form-hint {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 2px;
  line-height: 1.4;
}

.tt-author-row {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: #94A3B8;
  border-top: 1px solid #334155;
  padding-top: 7px;
  margin-top: 2px;
  margin-bottom: 4px;
}
.tt-author-row svg {
  flex-shrink: 0;
  opacity: .6;
}
.tt-author-row span {
  font-weight: 500;
  color: #CBD5E1;
}

.tt-hint {
  font-size: 10px;
  color: #475569;
  padding-top: 5px;
}

/* ---------- Scrollbar ---------- */
.roadmap-wrapper::-webkit-scrollbar { width: 8px; height: 8px; }
.roadmap-wrapper::-webkit-scrollbar-track { background: transparent; }
.roadmap-wrapper::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 4px; }
.roadmap-wrapper::-webkit-scrollbar-thumb:hover { background: #94A3B8; }
.modal-box::-webkit-scrollbar { width: 6px; }
.modal-box::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 3px; }

/* ---------- Utilities ---------- */
.hidden { display: none !important; }

/* ========================================
   Filter Bar & View Switcher
   ======================================== */

.filter-bar {
  height: 44px;
  background: #fff;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  flex-shrink: 0;
  z-index: 60;
  position: relative;
}

.view-tabs {
  display: flex;
  gap: 3px;
  background: #F1F5F9;
  border-radius: 8px;
  padding: 3px;
  flex-shrink: 0;
}

.view-tab {
  padding: 4px 12px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  font-family: inherit;
}

.view-tab.active {
  background: #fff;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

.view-tab:not(.active):hover {
  background: rgba(255,255,255,.6);
  color: var(--text-primary);
}

.filter-bar-sep {
  width: 1px;
  height: 22px;
  background: var(--border-light);
  flex-shrink: 0;
}

.filter-label {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-groups {
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-group {
  position: relative;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border: 1px solid var(--border-medium);
  border-radius: 7px;
  background: #fff;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  white-space: nowrap;
  font-family: inherit;
}

.filter-btn:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.filter-btn.active {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: #EFF6FF;
}

.filter-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-blue);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  border-radius: 10px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
}

.filter-dropdown-panel {
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  min-width: 180px;
  max-height: 260px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid var(--border-medium);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  z-index: 200;
  padding: 5px 0;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  cursor: pointer;
  transition: background var(--transition);
  font-size: 12.5px;
  color: var(--text-primary);
  user-select: none;
}

.filter-option:hover { background: #F8FAFC; }

.filter-option input[type="checkbox"] {
  width: 14px;
  height: 14px;
  cursor: pointer;
  accent-color: var(--accent-blue);
  flex-shrink: 0;
}

.filter-panel-actions {
  border-top: 1px solid var(--border-light);
  padding: 5px 12px 3px;
}

.filter-clear {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 11.5px;
  cursor: pointer;
  padding: 2px 0;
  font-family: inherit;
  transition: color var(--transition);
}

.filter-clear:hover { color: var(--accent-blue); }

.filter-empty-hint {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-muted);
}