/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
}
.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover {
  background: var(--color-surface-soft);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Focus-visible for keyboard navigation */
.btn:focus-visible,
.nav-item:focus-visible,
.sidebar-collapse:focus-visible,
.evidence-trigger:focus-visible,
.drawer-close:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-info);
  outline-offset: 2px;
}

/* Utility classes */
.text-muted {
  color: var(--color-muted);
}
.text-center {
  text-align: center;
}
.page-header {
  margin-bottom: var(--space-6);
}
.form-group {
  margin-bottom: var(--space-6);
}
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  text-align: center;
  background: var(--color-surface-soft);
  transition: border-color 0.2s, background 0.2s;
}
.copilot-trigger {
  cursor: pointer;
}
.logout-link {
  background: transparent;
  border: 0;
  padding: 0;
  font: inherit;
  cursor: pointer;
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.875rem;
}
.logout-link:hover {
  color: var(--color-text);
}

/* Card Styles */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}
.card-header {
  margin-bottom: var(--space-4);
  font-size: 1.125rem;
  font-weight: 600;
}

.coach-card {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.9fr);
  gap: var(--space-6);
  align-items: stretch;
}

.coach-card__main,
.coach-card__side {
  min-width: 0;
}

.coach-card__main {
  display: grid;
  gap: var(--space-4);
}

.coach-form {
  display: grid;
  gap: var(--space-3);
}

.coach-form textarea {
  width: 100%;
  min-height: 112px;
  resize: vertical;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  font: inherit;
  color: var(--color-text);
  background: var(--color-surface);
}

.coach-form__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.coach-check {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-muted);
  font-size: 0.875rem;
}

.coach-disabled,
.coach-empty,
.coach-answer {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
  padding: var(--space-4);
}

.coach-disabled,
.coach-empty {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.coach-answer {
  display: grid;
  gap: var(--space-2);
}

.coach-answer__meta,
.coach-history__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-muted);
  font-size: 0.75rem;
}

.coach-answer__question {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.coach-answer__body {
  color: var(--color-text);
  font-size: 0.875rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.coach-history {
  margin-top: var(--space-3);
}

.coach-history > summary {
  cursor: pointer;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.coach-history__list {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.coach-history__item {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
  font-size: 0.875rem;
  overflow-wrap: anywhere;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.focus-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-3);
}

.focus-tile {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  background: var(--color-surface-soft);
}

.focus-tile strong {
  display: block;
  font-size: 1.35rem;
  line-height: 1.2;
  margin-top: var(--space-2);
}

.disclosure-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 0;
  margin-bottom: var(--space-6);
}

.disclosure-card > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  cursor: pointer;
  padding: var(--space-5) var(--space-6);
  font-weight: 600;
  list-style: none;
}

.disclosure-card > summary::-webkit-details-marker {
  display: none;
}

.disclosure-card > summary::after {
  content: "展开";
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 500;
}

.disclosure-card[open] > summary {
  border-bottom: 1px solid var(--color-border);
}

.disclosure-card[open] > summary::after {
  content: "收起";
}

.disclosure-body {
  padding: var(--space-6);
}

.quiet-link {
  color: var(--color-muted);
  font-size: 0.75rem;
  text-decoration: none;
}

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

@media (max-width: 768px) {
  .metric-grid,
  .focus-summary,
  .coach-card {
    grid-template-columns: 1fr;
  }
}

/* Badge Styles */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
}
.badge-high { background: var(--color-danger-soft); color: var(--color-danger); }
.badge-medium { background: var(--color-warning-soft); color: var(--color-warning); }
.badge-low { background: var(--color-success-soft); color: var(--color-success); }

/* Evidence Trigger */
.evidence-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  margin-left: var(--space-2);
  transition: all 0.2s;
}
.evidence-trigger:hover {
  background: var(--color-accent);
  color: #fff;
}
.evidence-trigger--empty {
  background: var(--color-surface-soft);
  color: var(--color-muted);
  cursor: not-allowed;
}
.evidence-trigger--empty:hover {
  background: var(--color-surface-soft);
  color: var(--color-muted);
}
.evidence-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Stepper Styles */
.stepper {
  display: flex;
  justify-content: space-between;
  margin: var(--space-6) 0;
  position: relative;
}
.stepper::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}
.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1;
  width: 100%;
}
.step-indicator {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
  font-size: 0.75rem;
  font-weight: bold;
  color: var(--color-muted);
}
.step.succeeded .step-indicator {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
}
.step.running .step-indicator {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  animation: pulse 1.5s infinite;
}
.step.failed .step-indicator {
  background: var(--color-danger);
  border-color: var(--color-danger);
  color: #fff;
}
.step-label {
  font-size: 0.875rem;
  color: var(--color-muted);
  text-align: center;
}
.step.running .step-label, .step.succeeded .step-label, .step.failed .step-label {
  color: var(--color-text);
  font-weight: 500;
}
.step-duration {
  font-size: 0.7rem;
  color: var(--color-muted);
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(30, 58, 138, 0.4); }
  70% { box-shadow: 0 0 0 6px rgba(30, 58, 138, 0); }
  100% { box-shadow: 0 0 0 0 rgba(30, 58, 138, 0); }
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.toast {
  background: #333;
  color: #fff;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-popover);
  font-size: 0.875rem;
  animation: slideIn 0.3s ease;
  border-left: 4px solid var(--color-muted);
}
.toast-success { border-left-color: var(--color-success); background: #064e3b; }
.toast-error { border-left-color: var(--color-danger); background: #7f1d1d; }
.toast-warning { border-left-color: var(--color-warning); background: #78350f; }
.toast-info { border-left-color: var(--color-info); }
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Data Table */
.data-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}
.data-table th, .data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.data-table th {
  background: var(--color-surface-soft);
  font-weight: 600;
  color: var(--color-muted);
  position: sticky;
  top: 0;
  z-index: 1;
}
.data-table tbody tr:hover {
  background: var(--color-surface-soft);
}

/* Drawer overlay */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 999;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Floating Action Button (FAB) for Copilot */
.fab-copilot {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #fff;
  border: none;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 990; /* Just below overlay (999) */
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.2s;
}

.fab-copilot:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(30, 58, 138, 0.5);
  background-color: var(--color-primary-hover);
}

.fab-copilot:focus-visible {
  outline: 2px solid var(--color-info);
  outline-offset: 4px;
}

@media (max-width: 768px) {
  .fab-copilot {
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
  }
}