/* ── Unified Workspace (Phase 2) ─────────────────────────────────── */

/* ── Main Layout: 2-Column Grid (conflicts panel on-demand) ──────────────────────────────────– */
main.workspace-grid {
  flex: 1;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  gap: 0;
  overflow: hidden;
  height: 100%;
}

/* Conflicts panel collapses entirely unless open — the schedule grid
   reclaims the full width when there is nothing to show. */
main.workspace-grid:not(.conflicts-open) .col-panel {
  display: none;
}

/* Desktop: opening the drawer adds a real 3rd column (pushes the grid,
   no overlay). Tablet/mobile keep their slide-in overlay below. */
@media (min-width: 1025px) {
  main.workspace-grid.conflicts-open {
    grid-template-columns: var(--sidebar-w) 1fr 280px;
  }
}

/* Column 1: Sidebar (Physician Roster) */
.col-sidebar {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--border-subtle);
}

/* Column 2: Canvas (Schedule/Coverage Grid) */
.col-canvas {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
  min-width: 0;
  min-height: 0;
}

.canvas-header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0 10px;
  height: 40px;
  background: var(--surface);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: thin;
}

.canvas-mode-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.canvas-mode-btn:hover {
  background: var(--hl);
  color: var(--primary);
}

.canvas-mode-btn.active {
  background: var(--primary);
  color: #fff;
}

.canvas-body {
  flex: 1;
  overflow: auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.canvas-body.hidden {
  display: none;
}

/* Column 3: Right Panel (Context Tools) */
.col-panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-left: 1px solid var(--border-subtle);
  background: var(--surface);
  width: 280px;
  flex-shrink: 0;
}

.panel-header {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.panel-header h3 {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.panel-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 3px 6px;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.panel-close:hover {
  background: var(--hl);
  color: var(--primary);
}

.panel-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-3);
}

.panel-section {
  display: none;
}

.panel-section.active {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.panel-section.hidden {
  display: none;
}

/* ── Tab Bar: Help + Summary Tabs ─────────────────────────────────– */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
  gap: 0;
}

.tab {
  padding: 10px 20px;
  font-size: 0.87rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s;
  white-space: nowrap;
}

.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab[data-tab="schedule"],
.tab[data-tab="coverage"],
.tab[data-tab="summary"] {
  display: none !important;
}

.tab[data-tab="help"] {
  display: block;
}

/* ── Canvas Grid Tweaks for Unified Layout ───────────────────────– */
.grid-wrap {
  flex: 1;
  overflow: auto;
  position: relative;
}

/* ── Right Panel: Quick Assign Form ──────────────────────────────– */
.panel-quick-assign label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 4px;
  margin-top: 8px;
}

.panel-quick-assign label:first-child {
  margin-top: 0;
}

.panel-quick-assign input,
.panel-quick-assign select {
  width: 100%;
  padding: 6px 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  outline: none;
  margin-bottom: 8px;
}

.panel-quick-assign input:focus,
.panel-quick-assign select:focus {
  border-color: var(--primary);
}

.panel-warnings {
  font-size: 0.78rem;
  color: var(--danger);
  margin-bottom: 8px;
  padding: var(--sp-2);
  background: var(--danger-soft);
  border-radius: var(--radius-sm);
  display: none;
}

.panel-warnings.show {
  display: block;
}

.panel-actions {
  display: flex;
  gap: 6px;
  margin-top: 12px;
}

.panel-btn {
  flex: 1;
  padding: 8px 12px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.panel-btn.primary {
  background: var(--primary);
  color: #fff;
}

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

.panel-btn.secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

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

/* ── Right Panel: Conflicts List ─────────────────────────────────– */
.conflicts-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.conflict-item {
  padding: 8px 10px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--danger);
  cursor: pointer;
  transition: all 0.15s;
}

.conflict-item:hover {
  background: var(--danger-soft);
}

.conflict-item-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.conflict-item-physicians {
  font-size: 0.75rem;
  color: var(--muted);
}

.conflict-resolver {
  padding: var(--sp-2);
  background: var(--hl);
  border-radius: var(--radius-sm);
  margin-top: 8px;
  display: none;
}

.conflict-resolver.show {
  display: block;
}

.conflict-resolver label {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  font-size: 0.8rem;
  cursor: pointer;
}

.conflict-resolver input[type="radio"] {
  cursor: pointer;
  accent-color: var(--primary);
}

/* ── Right Panel: Summary Preview ────────────────────────────────– */
.summary-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2);
}

.summary-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--sp-2);
  background: var(--bg);
  border-radius: var(--radius-sm);
  text-align: center;
}

.summary-stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}

.summary-stat-label {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 2px;
}

.summary-stat.warning .summary-stat-value {
  color: var(--warn);
}

.summary-stat.error .summary-stat-value {
  color: var(--danger);
}

.summary-link {
  font-size: 0.8rem;
  color: var(--primary);
  text-align: center;
  margin-top: 8px;
  cursor: pointer;
  text-decoration: underline;
}

.summary-link:hover {
  color: var(--primary-dark);
}

/* ── Tablet (640–1024px): 2-Column + Overlay ────────────────────– */
@media (max-width: 1024px) {
  main.workspace-grid {
    grid-template-columns: 120px 1fr 0;
  }

  .col-panel {
    position: fixed;
    right: -280px;
    top: 0;
    bottom: 0;
    width: 280px;
    z-index: 300;
    transition: right 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  }

  .col-panel.visible {
    right: 0;
  }

  .panel-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 299;
  }

  .panel-backdrop.visible {
    display: block;
  }

  .canvas-mode-btn {
    padding: 5px 10px;
    font-size: 0.78rem;
  }
}

/* ── Mobile (<640px): Single Column + Drawer + Bottom Sheet ─────– */
@media (max-width: 640px) {
  main.workspace-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }

  .col-sidebar {
    position: fixed;
    left: 0;
    top: var(--header-h);
    bottom: 0;
    z-index: 400;
    transform: translateX(-110%);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.25);
    width: 240px;
  }

  .col-sidebar.open {
    transform: translateX(0);
  }

  .col-canvas {
    grid-column: 1;
    grid-row: 2;
  }

  .col-panel {
    position: fixed;
    left: 0;
    right: 0;
    bottom: -500px;
    width: 100%;
    z-index: 350;
    max-height: 70vh;
    transition: bottom 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl) 16px 0 0;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.15);
  }

  .col-panel.visible {
    bottom: 0;
  }

  .panel-content {
    padding: var(--sp-3);
  }

  .panel-header {
    padding: 12px 14px;
  }

  .canvas-header {
    padding: 0 8px;
    height: 36px;
    gap: var(--sp-1);
  }

  .canvas-mode-btn {
    padding: 4px 8px;
    font-size: 0.75rem;
  }

  .summary-preview {
    grid-template-columns: 1fr;
  }
}

/* ── Print: Hide Panel & Sidebar ─────────────────────────────────– */
@media print {
  .col-sidebar,
  .col-panel,
  .panel-backdrop,
  .canvas-mode-btn,
  .canvas-header {
    display: none !important;
  }

  main.workspace-grid {
    grid-template-columns: 1fr;
  }

  .col-canvas {
    flex: 1;
  }
}

.panel-empty { color: var(--muted); font-size: 0.82rem; padding: 8px 4px; }