/* ==========================================================================
   ChangeMesh Judge and Operator Dashboard Stylesheet
   WCAG 2.1 AA Compliant, High Contrast, Fully Responsive, Zero External Deps
   ========================================================================== */

:root {
  /* Dark Theme (Default) */
  --bg-primary: #0a0f1d;
  --bg-secondary: #121a2f;
  --bg-card: #18223c;
  --bg-card-hover: #1f2c4d;
  --border-color: #2a3b60;
  --border-focus: #3b82f6;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --color-accent: #38bdf8;
  --color-success: #34d399;
  --color-warning: #fbbf24;
  --color-danger: #f87171;
  --color-info: #60a5fa;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

[data-theme="light"] {
  --bg-primary: #f1f5f9;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --border-color: #cbd5e1;
  --border-focus: #2563eb;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --color-accent: #0284c7;
  --color-success: #059669;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --color-info: #2563eb;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 10px;
  background: var(--color-accent);
  color: var(--text-inverse);
  padding: 8px 16px;
  z-index: 1000;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 10px;
}

/* Keyboard Focus Outline (WCAG 2.4.7) */
*:focus-visible,
.btn:focus-visible,
.card:focus-visible,
a:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header / Banner */
.app-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  font-size: 2rem;
  color: var(--color-accent);
  line-height: 1;
}

.app-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.025em;
}

.app-subtitle {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Status Pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  background-color: rgba(56, 189, 248, 0.1);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
  display: inline-block;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.evidence-mode-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.625rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease-in-out;
  min-height: 38px;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--text-inverse);
}

.btn-primary:hover {
  filter: brightness(1.1);
}

.btn-secondary {
  background-color: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
}

.btn-success {
  background-color: var(--color-success);
  color: #064e3b;
}

.btn-danger {
  background-color: var(--color-danger);
  color: #7f1d1d;
}

.btn-icon {
  background-color: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Main Layout */
.dashboard-main {
  flex: 1;
  padding: 2rem 0;
}

.dashboard-section {
  margin-bottom: 2.5rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.subsection-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  gap: 1rem;
}

.metrics-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease;
  min-width: 0;
}

.card:hover {
  border-color: var(--color-accent);
}

.metric-card {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.metric-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

/* Two Column Layout */
.two-column-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.5rem;
}

.column {
  min-width: 0;
}

@media (max-width: 900px) {
  .two-column-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Agent Fleet List */
.agent-fleet-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.agent-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
}

.agent-info {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.agent-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.agent-rev {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.agent-stats {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Timeline */
.timeline-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  max-height: 420px;
  overflow-y: auto;
}

.timeline-list {
  list-style: none;
  position: relative;
  padding-left: 1.5rem;
}

.timeline-list::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  background-color: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 1.25rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -1.5rem;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--bg-card);
  border: 2px solid var(--color-accent);
}

.timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.timeline-state {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.timeline-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.timeline-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Approval Compression Card */
.approval-card {
  border-left: 4px solid var(--color-warning);
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
}

.approval-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.approval-badge-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.approval-question-box {
  background-color: rgba(251, 191, 36, 0.05);
  border: 1px solid rgba(251, 191, 36, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1rem;
}

.question-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.question-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.approval-details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.detail-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.detail-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.detail-val {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.approval-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ShadowLab Scenarios Grid */
.shadowlab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.scenario-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
}

.scenario-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.scenario-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.scenario-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.scenario-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 0.5rem;
}

/* Passport & Cloud Proofs */
.passport-view {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.passport-entry {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.passport-entry:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.passport-key {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.passport-val {
  font-size: 0.8125rem;
  color: var(--text-primary);
  max-width: 60%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.cloud-proof-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cloud-proof-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  gap: 0.5rem;
  min-width: 0;
}

.cloud-service-icon {
  font-size: 1.25rem;
}

.cloud-proof-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.cloud-proof-info span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-success {
  background-color: rgba(52, 211, 153, 0.15);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.badge-warning {
  background-color: rgba(251, 191, 36, 0.15);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.badge-danger {
  background-color: rgba(248, 113, 113, 0.15);
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
}

.badge-info {
  background-color: rgba(96, 165, 250, 0.15);
  color: var(--color-info);
  border: 1px solid var(--color-info);
}

/* Typography Utilities */
.text-mono { font-family: var(--font-mono); }
.text-small { font-size: 0.75rem; }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-muted { color: var(--text-muted); }

/* Footer */
.app-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 0;
  margin-top: auto;
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.375rem;
}

.footer-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Responsive Viewport Queries */
@media (max-width: 640px) {
  .container { padding: 0 1rem; }
  .app-title { font-size: 1.25rem; }
  .header-container { flex-direction: column; align-items: flex-start; padding: 0 1rem; }
  .header-controls { width: 100%; justify-content: flex-start; gap: 0.5rem; flex-wrap: wrap; }
  .metrics-grid { grid-template-columns: 1fr; }
  .shadowlab-grid { grid-template-columns: 1fr; }
  .approval-details-grid { grid-template-columns: 1fr; }
}