/* Tutor Ops v0.3 — Operator Console Design System */

:root {
  /* Surface & Background */
  --ops-bg: #f8fafc;
  --ops-surface: #ffffff;
  --ops-surface-subtle: #f1f5f9;
  --ops-surface-hover: #f8fafc;

  /* Borders & Dividers */
  --ops-border: #e2e8f0;
  --ops-border-subtle: #edf2f7;
  --ops-border-strong: #cbd5e1;

  /* Typography */
  --ops-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --ops-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --ops-text: #0f172a;
  --ops-text-muted: #64748b;
  --ops-text-subtle: #94a3b8;

  /* State Semantics */
  /* Green: Safe / Compatible / Active-arranged / Eligible */
  --ops-green: #059669;
  --ops-green-bg: #ecfdf5;
  --ops-green-border: #a7f3d0;
  --ops-green-text: #065f46;

  /* Amber: Needs confirmation / Paused / Pending */
  --ops-amber: #d97706;
  --ops-amber-bg: #fffbeb;
  --ops-amber-border: #fde68a;
  --ops-amber-text: #92400e;

  /* Red: Conflict / Do-not-contact / Cancelled / Destructive */
  --ops-red: #dc2626;
  --ops-red-bg: #fef2f2;
  --ops-red-border: #fecaca;
  --ops-red-text: #991b1b;

  /* Blue: Current flow / Sourcing / Active focus */
  --ops-blue: #2563eb;
  --ops-blue-bg: #eff6ff;
  --ops-blue-border: #bfdbfe;
  --ops-blue-text: #1e40af;

  /* Gray: Draft / Archived / Neutral */
  --ops-gray: #475569;
  --ops-gray-bg: #f1f5f9;
  --ops-gray-border: #cbd5e1;
  --ops-gray-text: #334155;

  /* Sizing & Radius */
  --ops-radius-sm: 4px;
  --ops-radius-md: 6px;
  --ops-radius-lg: 8px;
  --ops-shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --ops-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);

  /* Layout */
  --ops-sidebar-w: 240px;
  --ops-topbar-h: 56px;
}

/* Base resets & typography */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--ops-font);
  font-size: 0.875rem; /* 14px base for high density */
  line-height: 1.5;
  color: var(--ops-text);
  background-color: var(--ops-bg);
  min-height: 100vh;
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

/* Global Shell */
.ops-app-layout {
  display: flex;
  min-height: 100vh;
}

.ops-sidebar {
  width: var(--ops-sidebar-w);
  flex-shrink: 0;
  background-color: var(--ops-surface);
  border-right: 1px solid var(--ops-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 100;
}

.ops-sidebar-brand {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--ops-border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ops-text);
  text-decoration: none;
}

.ops-sidebar-brand .badge-tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.4rem;
  border-radius: var(--ops-radius-sm);
  background: var(--ops-blue-bg);
  color: var(--ops-blue);
  border: 1px solid var(--ops-blue-border);
}

.ops-sidebar-nav {
  padding: 0.75rem 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
  overflow-y: auto;
}

.ops-nav-label {
  padding: 0.5rem 0.75rem 0.25rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ops-text-muted);
}

.ops-nav-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--ops-radius-md);
  color: var(--ops-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.ops-nav-link:hover {
  background-color: var(--ops-surface-subtle);
  color: var(--ops-text);
}

.ops-nav-link.active {
  background-color: var(--ops-blue-bg);
  color: var(--ops-blue);
  font-weight: 600;
}

.ops-nav-link svg {
  flex-shrink: 0;
  opacity: 0.85;
}

.ops-sidebar-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--ops-border);
  background: var(--ops-surface);
}

.ops-main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.ops-topbar {
  height: var(--ops-topbar-h);
  background-color: var(--ops-surface);
  border-bottom: 1px solid var(--ops-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 90;
}

.ops-topbar-context {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.ops-topbar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.ops-content {
  flex: 1;
  padding: 1.5rem;
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
}

/* Fluid wide modifier when doing master-detail */
.ops-content--fluid {
  max-width: 100%;
  padding: 1rem 1.25rem;
}

/* Breadcrumbs */
.ops-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--ops-text-muted);
  margin-bottom: 0.5rem;
}
.ops-breadcrumb a {
  color: var(--ops-text-muted);
  text-decoration: none;
}
.ops-breadcrumb a:hover {
  color: var(--ops-blue);
  text-decoration: underline;
}
.ops-breadcrumb-sep {
  color: var(--ops-border-strong);
}

/* Cards & Surfaces */
.ops-card {
  background: var(--ops-surface);
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-lg);
  box-shadow: var(--ops-shadow-sm);
  margin-bottom: 1rem;
  overflow: hidden;
}

.ops-card-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--ops-border);
  background-color: var(--ops-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.ops-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0;
  color: var(--ops-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ops-card-body {
  padding: 1rem;
}

/* Semantic Badges / Chips */
.ops-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.2;
  border-radius: var(--ops-radius-sm);
  white-space: nowrap;
  border: 1px solid transparent;
}

.ops-chip--green {
  background-color: var(--ops-green-bg);
  color: var(--ops-green-text);
  border-color: var(--ops-green-border);
}

.ops-chip--amber {
  background-color: var(--ops-amber-bg);
  color: var(--ops-amber-text);
  border-color: var(--ops-amber-border);
}

.ops-chip--red {
  background-color: var(--ops-red-bg);
  color: var(--ops-red-text);
  border-color: var(--ops-red-border);
}

.ops-chip--blue {
  background-color: var(--ops-blue-bg);
  color: var(--ops-blue-text);
  border-color: var(--ops-blue-border);
}

.ops-chip--gray {
  background-color: var(--ops-gray-bg);
  color: var(--ops-gray-text);
  border-color: var(--ops-gray-border);
}

/* High-Density Tables */
.ops-table-container {
  background: var(--ops-surface);
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-lg);
  box-shadow: var(--ops-shadow-sm);
  overflow-x: auto;
}

.ops-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 0;
}

.ops-table th {
  background-color: #f8fafc;
  color: var(--ops-text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--ops-border);
  white-space: nowrap;
}

.ops-table td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--ops-border-subtle);
  vertical-align: middle;
  color: var(--ops-text);
}

.ops-table tbody tr:last-child td {
  border-bottom: none;
}

.ops-table tbody tr:hover td {
  background-color: var(--ops-surface-hover);
}

/* Row highlights - subtle border and background tints, never blinding */
.ops-table tr.row-danger td {
  background-color: #fff5f5;
}
.ops-table tr.row-warning td {
  background-color: #fffdf5;
}

/* Buttons */
.ops-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-size: 0.825rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: var(--ops-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  line-height: 1.25;
}

.ops-btn:disabled, .ops-btn.disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.ops-btn-sm {
  padding: 0.3rem 0.6rem;
  font-size: 0.775rem;
  border-radius: var(--ops-radius-sm);
}

.ops-btn-primary {
  background-color: #2563eb;
  color: #ffffff;
  border-color: #1d4ed8;
}
.ops-btn-primary:hover {
  background-color: #1d4ed8;
  color: #ffffff;
}

.ops-btn-secondary {
  background-color: #ffffff;
  color: var(--ops-text);
  border-color: var(--ops-border-strong);
}
.ops-btn-secondary:hover {
  background-color: var(--ops-surface-subtle);
  border-color: #94a3b8;
}

.ops-btn-success {
  background-color: #059669;
  color: #ffffff;
  border-color: #047857;
}
.ops-btn-success:hover {
  background-color: #047857;
  color: #ffffff;
}

.ops-btn-danger {
  background-color: #ffffff;
  color: #dc2626;
  border-color: #fecaca;
}
.ops-btn-danger:hover {
  background-color: #fef2f2;
  border-color: #dc2626;
}

/* Filter Bar */
.ops-filter-bar {
  background: var(--ops-surface);
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-lg);
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
  box-shadow: var(--ops-shadow-sm);
}

/* Master-Detail Layout (Used in Contact Queue & Work) */
.ops-split-layout {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  min-height: calc(100vh - var(--ops-topbar-h) - 3rem);
}

.ops-split-list {
  width: 420px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.ops-split-detail {
  flex: 1;
  min-width: 0;
}

/* Queue Item Card in List */
.ops-queue-item {
  background: var(--ops-surface);
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-md);
  padding: 0.75rem 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.ops-queue-item:hover {
  border-color: var(--ops-blue);
  box-shadow: var(--ops-shadow-sm);
  background-color: #fafcff;
}

.ops-queue-item.active {
  border-color: var(--ops-blue);
  background-color: var(--ops-blue-bg);
  box-shadow: 0 0 0 1px var(--ops-blue);
}

.ops-queue-item--conflict {
  border-left: 3px solid var(--ops-red);
}

.ops-queue-item--needs_conf {
  border-left: 3px solid var(--ops-amber);
}

.ops-queue-item--eligible {
  border-left: 3px solid var(--ops-green);
}

/* Command Header on Order Detail */
.ops-command-header {
  background: var(--ops-surface);
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--ops-shadow-sm);
}

.ops-command-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ops-border-subtle);
}

.ops-command-item {
  display: flex;
  flex-direction: column;
}

.ops-command-label {
  font-size: 0.725rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--ops-text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.ops-command-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ops-text);
}

.ops-command-sub {
  font-size: 0.75rem;
  color: var(--ops-text-muted);
}

/* Copy Box UX */
.ops-copy-box {
  background: #f8fafc;
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-md);
  padding: 0.75rem;
  position: relative;
}

.ops-copy-textarea {
  width: 100%;
  font-family: var(--ops-mono);
  font-size: 0.85rem;
  border: none;
  background: transparent;
  resize: vertical;
  color: #1e293b;
  outline: none;
}

/* Toast / Feedback Notice */
.ops-notice {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--ops-radius-md);
  border: 1px solid transparent;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.ops-notice--info {
  background-color: var(--ops-blue-bg);
  border-color: var(--ops-blue-border);
  color: var(--ops-blue-text);
}

.ops-notice--success {
  background-color: var(--ops-green-bg);
  border-color: var(--ops-green-border);
  color: var(--ops-green-text);
}

.ops-notice--warning {
  background-color: var(--ops-amber-bg);
  border-color: var(--ops-amber-border);
  color: var(--ops-amber-text);
}

.ops-notice--danger {
  background-color: var(--ops-red-bg);
  border-color: var(--ops-red-border);
  color: var(--ops-red-text);
}

/* Compact Forms */
.ops-form-section {
  background: var(--ops-surface);
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.ops-form-section-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--ops-text);
}

.ops-form-section-desc {
  font-size: 0.775rem;
  color: var(--ops-text-muted);
  margin-bottom: 1rem;
}

/* Availability schedule grid for teachers */
.ops-schedule-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
}

.ops-schedule-day {
  background: #f8fafc;
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-md);
  padding: 0.5rem;
  font-size: 0.75rem;
}

.ops-schedule-day-title {
  font-weight: 600;
  color: var(--ops-text-muted);
  margin-bottom: 0.35rem;
  text-align: center;
}

/* Activity / Timeline */
.ops-timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
}

.ops-timeline-item {
  position: relative;
  padding-left: 1.25rem;
  padding-bottom: 0.85rem;
  border-left: 1px solid var(--ops-border);
}

.ops-timeline-item:last-child {
  border-left: 1px solid transparent;
  padding-bottom: 0;
}

.ops-timeline-dot {
  position: absolute;
  left: -4px;
  top: 4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--ops-border-strong);
}

.ops-timeline-content {
  font-size: 0.825rem;
}

.ops-timeline-meta {
  font-size: 0.75rem;
  color: var(--ops-text-muted);
}

/* Responsive adjustments */
@media (max-width: 991.98px) {
  .ops-sidebar {
    display: none; /* Mobile navigation toggle */
  }
  .ops-split-layout {
    flex-direction: column;
  }
  .ops-split-list {
    width: 100%;
  }
}

/* Multi-step Wizard for Imports */
.ops-wizard-steps {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding: 0.75rem 1rem;
  background: var(--ops-surface);
  border: 1px solid var(--ops-border);
  border-radius: var(--ops-radius-md);
  font-size: 0.825rem;
}

.ops-wizard-step {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--ops-text-muted);
  font-weight: 500;
}

.ops-wizard-step.active {
  color: var(--ops-blue);
  font-weight: 600;
}

.ops-wizard-step.done {
  color: var(--ops-green-text);
}

.ops-wizard-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #e2e8f0;
  color: var(--ops-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.ops-wizard-step.active .ops-wizard-num {
  background: #2563eb;
  color: #ffffff;
}

.ops-wizard-step.done .ops-wizard-num {
  background: #059669;
  color: #ffffff;
}

.ops-wizard-sep {
  color: var(--ops-border-strong);
  font-size: 0.75rem;
}