:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-hover: #f1f5f9;
  --border: #e2e8f0;
  --border-muted: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #eff6ff;
  --accent-border: #bfdbfe;
  
  --success-bg: #ecfdf5;
  --success-text: #047857;
  --success-border: #a7f3d0;
  
  --warning-bg: #fffbeb;
  --warning-text: #b45309;
  --warning-border: #fde68a;
  
  --danger-bg: #fef2f2;
  --danger-text: #b91c1c;
  --danger-border: #fecaca;
  
  --info-bg: #eff6ff;
  --info-text: #1d4ed8;
  --info-border: #bfdbfe;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

header {
  padding: 14px 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sub {
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 2px;
}

main {
  padding: 24px 28px;
  max-width: 1600px;
  margin: 0 auto;
}

/* Nav Tabs */
nav {
  display: flex;
  gap: 4px;
  background: #f1f5f9;
  padding: 4px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 20px;
  overflow-x: auto;
}

.tab {
  background: transparent;
  color: var(--text-secondary);
  border: 0;
  border-radius: 6px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.6);
}

.tab.active {
  background: var(--surface);
  color: var(--accent);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* KPI Summary Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: var(--shadow-sm);
}

.card.urgent {
  border-color: var(--danger-border);
  background: #fffafa;
}

.card.warning {
  border-color: var(--warning-border);
  background: #fffdf5;
}

.card .label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card .metric {
  font-size: 22px;
  font-weight: 700;
  margin-top: 4px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.card.urgent .metric {
  color: var(--danger-text);
}

.card.warning .metric {
  color: var(--warning-text);
}

/* Panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  min-width: 0;
}

.panel.urgent-panel {
  border-color: #fca5a5;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.toolbar h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

/* Buttons */
button, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  background: var(--surface);
  color: var(--text-primary);
  transition: all 0.15s ease;
  line-height: 1.4;
  text-decoration: none;
}

button:hover, .button:hover {
  background: var(--surface-hover);
  border-color: #cbd5e1;
}

button.primary, button.primary-btn {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

button.primary:hover, button.primary-btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

button.secondary, button.secondary-btn {
  background: #f1f5f9;
  color: var(--text-primary);
  border-color: var(--border);
}

button.secondary:hover, button.secondary-btn:hover {
  background: #e2e8f0;
}

button.danger {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-color: var(--danger-border);
}

button.danger:hover {
  background: #fee2e2;
}

button.ghost-btn {
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
}

button.ghost-btn:hover {
  background: #f1f5f9;
  color: var(--text-primary);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Link Button */
.link {
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  font-size: inherit;
  text-decoration: none;
}

.link:hover {
  text-decoration: underline;
  color: var(--accent-hover);
}

/* Badges & Pills */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  white-space: nowrap;
}

.pill-success, .pill.active, .pill.done, .pill.auto_classified, .pill.completed {
  background: var(--success-bg);
  color: var(--success-text);
  border-color: var(--success-border);
}

.pill-warning, .pill.needs_review, .pill.planning, .pill.on_hold, .pill.pending {
  background: var(--warning-bg);
  color: var(--warning-text);
  border-color: var(--warning-border);
}

.pill-danger, .pill.blocked, .pill.urgent, .pill.overdue, .pill.high, .pill.failed {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-color: var(--danger-border);
}

.pill-info, .pill.manual, .pill.manually_classified {
  background: var(--info-bg);
  color: var(--info-text);
  border-color: var(--info-border);
}

.pill-muted, .pill.inactive, .pill.archived, .pill.cancelled, .pill.unclassified, .pill.not_requested {
  background: #f1f5f9;
  color: var(--text-secondary);
  border-color: #cbd5e1;
}

/* Source Badges */
.source-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid transparent;
}

.source-gmail { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }
.source-outlook { background: #eff6ff; color: #1d4ed8; border-color: #bfdbfe; }
.source-slack { background: #f3e8ff; color: #6b21a8; border-color: #e9d5ff; }
.source-line { background: #f0fdf4; color: #15803d; border-color: #bbf7d0; }
.source-teams { background: #eef2ff; color: #3730a3; border-color: #c7d2fe; }
.source-default { background: #f1f5f9; color: #475569; border-color: #cbd5e1; }

/* Tables */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  background: #f8fafc;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}

td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-muted);
  vertical-align: middle;
  color: var(--text-primary);
  overflow-wrap: anywhere;
  word-break: break-word;
}

tr:last-child td {
  border-bottom: 0;
}

tr:hover td {
  background: #f8fafc;
}

.table-actions {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

button.small, .button.small {
  padding: 3px 8px;
  font-size: 11px;
  line-height: 1.3;
  border-radius: 4px;
}

/* Grid Layouts */
.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Forms & Filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.filters label {
  min-width: 140px;
  flex: 1;
}

.form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.form .full {
  grid-column: 1 / -1;
}

input, select, textarea {
  width: 100%;
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  background: var(--surface);
  color: var(--text-primary);
}

textarea {
  min-height: 90px;
  resize: vertical;
}

/* Evidence Details */
.evidence-details {
  font-size: 12px;
  margin-top: 4px;
}

.evidence-details summary {
  cursor: pointer;
  color: var(--text-muted);
  font-weight: 500;
  user-select: none;
}

.evidence-details summary:hover {
  color: var(--accent);
}

.evidence-list {
  margin: 6px 0 0 0;
  padding-left: 18px;
  color: var(--text-secondary);
}

.evidence-list li {
  margin-bottom: 3px;
}

/* Notice & Dialog */
.notice {
  padding: 10px 14px;
  border: 1px solid #b5decf;
  background: #edf9f3;
  color: var(--success-text);
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 13px;
}

.notice.error {
  border-color: #fecaca;
  background: #fef2f2;
  color: #b91c1c;
}

.notice.warning {
  border-color: #fde68a;
  background: #fffbeb;
  color: #b45309;
}

dialog {
  width: min(820px, 94vw);
  max-height: 90vh;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  background: var(--surface);
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.4);
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 20px 0;
}

.detail-grid strong {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.message-body {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.6;
}

.small { font-size: 12px; }
.muted { color: var(--text-muted); }
.bold { font-weight: 600; }
.empty { padding: 24px; color: var(--text-muted); text-align: center; }

@media (max-width: 1000px) {
  .grid2 { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 600px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  main { padding: 14px; }
  header { padding: 12px 16px; flex-direction: column; align-items: flex-start; }
}

/* Auth / Login Overlay */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 60vh;
  padding: 20px;
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 32px;
  width: 100%;
  max-width: 400px;
}
.login-header {
  text-align: center;
  margin-bottom: 24px;
}
.login-header h2 {
  margin: 0 0 6px 0;
  font-size: 20px;
  font-weight: 700;
}
.login-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
}
.login-form label {
  display: block;
  margin-bottom: 16px;
  font-weight: 500;
}
.login-form input {
  width: 100%;
  margin-top: 6px;
}
.login-form button {
  width: 100%;
  margin-top: 8px;
  padding: 10px;
  font-size: 14px;
}
.user-badge-container {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}
.user-info {
  display: flex;
  align-items: center;
  gap: 6px;
}
.user-name {
  font-weight: 600;
  color: var(--text-primary);
}