/* Art direction: Military/intelligence operations center → dark, precise, tactical
   Palette: Cool/dark navy base, severity-coded accents (red/orange/yellow/blue/green)
   Typography: JetBrains Mono (data/display) + Inter (body/UI) — ops-center monospace feel
   Density: Dense — dashboard with high information density */

:root {
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'JetBrains Mono', 'Fira Code', monospace;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================================
   DARK MODE (default)
   ============================================ */
:root, [data-theme="dark"] {
  --color-bg:             #0a0e17;
  --color-surface:        #111827;
  --color-surface-2:      #1a2332;
  --color-surface-offset: #1e2a3a;
  --color-border:         #2a3444;
  --color-divider:        #222d3d;

  --color-text:           #e2e8f0;
  --color-text-muted:     #94a3b8;
  --color-text-faint:     #64748b;
  --color-text-inverse:   #0a0e17;

  --color-primary:        #06b6d4;
  --color-primary-hover:  #0891b2;
  --color-primary-active: #0e7490;
  --color-primary-highlight: rgba(6, 182, 212, 0.1);

  --color-critical:       #ef4444;
  --color-high:           #f97316;
  --color-medium:         #eab308;
  --color-low:            #3b82f6;
  --color-success:        #22c55e;

  --color-error:          #ef4444;
  --color-warning:        #f97316;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
}

/* ============================================
   LIGHT MODE
   ============================================ */
[data-theme="light"] {
  --color-bg:             #f1f5f9;
  --color-surface:        #ffffff;
  --color-surface-2:      #f8fafc;
  --color-surface-offset: #e2e8f0;
  --color-border:         #cbd5e1;
  --color-divider:        #e2e8f0;

  --color-text:           #0f172a;
  --color-text-muted:     #475569;
  --color-text-faint:     #94a3b8;
  --color-text-inverse:   #f8fafc;

  --color-primary:        #0891b2;
  --color-primary-hover:  #0e7490;
  --color-primary-active: #155e75;
  --color-primary-highlight: rgba(8, 145, 178, 0.08);

  --color-critical:       #dc2626;
  --color-high:           #ea580c;
  --color-medium:         #ca8a04;
  --color-low:            #2563eb;
  --color-success:        #16a34a;

  --color-error:          #dc2626;
  --color-warning:        #ea580c;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

/* ============================================
   GLOBAL LAYOUT
   ============================================ */
html, body { height: 100%; overflow: hidden; margin: 0; }

.dashboard {
  display: grid;
  grid-template-rows: auto auto auto 1fr auto;
  height: 100dvh;
  overflow: hidden;
}

/* ============================================
   HEADER / TOPBAR
   ============================================ */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  z-index: 20;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.topbar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(6, 182, 212, 0.015) 2px,
    rgba(6, 182, 212, 0.015) 4px
  );
  pointer-events: none;
  animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
  0% { transform: translateY(0); }
  100% { transform: translateY(4px); }
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}

.logo-text {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-success);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  position: relative;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid var(--color-success);
  animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar-time {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums lining-nums;
}

.last-scan {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.theme-toggle-btn {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.theme-toggle-btn:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
}

/* ============================================
   CRITICAL ALERT BANNER
   ============================================ */
.critical-banner {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: rgba(239, 68, 68, 0.12);
  border-bottom: 1px solid rgba(239, 68, 68, 0.3);
  animation: banner-pulse 3s ease-in-out infinite;
  gap: var(--space-4);
}

.critical-banner.active {
  display: flex;
}

@keyframes banner-pulse {
  0%, 100% { background: rgba(239, 68, 68, 0.12); }
  50% { background: rgba(239, 68, 68, 0.2); }
}

.critical-banner-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  min-width: 0;
}

.critical-banner-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-critical);
}

.critical-banner-text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-critical);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.critical-banner-dismiss {
  flex-shrink: 0;
  padding: var(--space-1);
  color: var(--color-critical);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.critical-banner-dismiss:hover {
  background: rgba(239, 68, 68, 0.2);
}

/* ============================================
   KPI CARDS
   ============================================ */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.kpi-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.kpi-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-1);
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  font-variant-numeric: tabular-nums lining-nums;
  line-height: 1.2;
}

.kpi-delta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  margin-top: var(--space-1);
}

.kpi-delta.up { color: var(--color-critical); }
.kpi-delta.down { color: var(--color-success); }
.kpi-delta.neutral { color: var(--color-text-faint); }

.kpi-sparkline {
  margin-top: var(--space-2);
  height: 24px;
}

.kpi-sparkline svg {
  width: 100%;
  height: 24px;
}

.kpi-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-2);
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */
.main-content {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 0;
  overflow: hidden;
}

/* ---- LEFT COLUMN: ALERT FEED ---- */
.feed-column {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--color-border);
}

.feed-filters {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  flex-wrap: wrap;
}

.filter-select {
  padding: var(--space-1) var(--space-3);
  padding-right: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  cursor: pointer;
}

.filter-select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.filter-search {
  flex: 1;
  min-width: 160px;
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text);
}

.filter-search::placeholder { color: var(--color-text-faint); }
.filter-search:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.feed-list {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--space-3) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.feed-list::-webkit-scrollbar {
  width: 6px;
}
.feed-list::-webkit-scrollbar-track {
  background: transparent;
}
.feed-list::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

/* ALERT CARD */
.alert-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-border);
  padding: var(--space-4);
  transition: background var(--transition-interactive), border-color var(--transition-interactive);
  animation: slideIn 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.alert-card:hover {
  background: var(--color-surface-2);
}

.alert-card[data-severity="CRITICAL"] { border-left-color: var(--color-critical); }
.alert-card[data-severity="HIGH"] { border-left-color: var(--color-high); }
.alert-card[data-severity="MEDIUM"] { border-left-color: var(--color-medium); }
.alert-card[data-severity="LOW"] { border-left-color: var(--color-low); }

.alert-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.severity-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

.severity-badge.critical { background: rgba(239,68,68,0.15); color: var(--color-critical); }
.severity-badge.high { background: rgba(249,115,22,0.15); color: var(--color-high); }
.severity-badge.medium { background: rgba(234,179,8,0.15); color: var(--color-medium); }
.severity-badge.low { background: rgba(59,130,246,0.15); color: var(--color-low); }

.alert-timestamp {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-faint);
  font-variant-numeric: tabular-nums lining-nums;
}

.alert-title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
  line-height: 1.4;
}

.alert-description {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-2);
}

.alert-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  padding: 1px var(--space-2);
  font-family: var(--font-mono);
  font-size: 10px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.meta-tag.source { color: var(--color-primary); background: var(--color-primary-highlight); }

/* Source link (clickable meta-tag) */
.source-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-interactive), border-color var(--transition-interactive);
  border: 1px solid transparent;
}

.source-link:hover {
  background: rgba(6, 182, 212, 0.18);
  border-color: var(--color-primary);
}

.source-link svg {
  flex-shrink: 0;
}

.source-ext-icon {
  opacity: 0.5;
  margin-left: 1px;
}

.source-link:hover .source-ext-icon {
  opacity: 1;
}

/* Non-link source tag with icon */
.meta-tag.source {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.meta-tag.source svg {
  flex-shrink: 0;
}

.alert-details {
  display: none;
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.alert-details.open { display: block; }

/* Source Preview Card (inside details) */
.source-preview {
  margin-top: var(--space-3);
}

.source-preview-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.source-preview-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  transition: border-color var(--transition-interactive), background var(--transition-interactive);
}

.source-preview-card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}

.source-preview-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.source-preview-header > svg {
  flex-shrink: 0;
}

.source-preview-meta {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.source-preview-domain {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.source-preview-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
}

.source-preview-arrow {
  flex-shrink: 0;
  color: var(--color-text-faint);
  transition: color var(--transition-interactive);
}

.source-preview-card:hover .source-preview-arrow {
  color: var(--color-primary);
}

.source-preview-title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.source-preview-desc {
  font-family: var(--font-body);
  font-size: 11px;
  color: var(--color-text-muted);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.alert-details-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.view-details-btn {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  margin-top: var(--space-2);
}

.view-details-btn:hover { color: var(--color-primary-hover); text-decoration: underline; }

/* ---- RIGHT COLUMN: SIDEBAR ---- */
.sidebar-column {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--color-surface);
}

.sidebar-column::-webkit-scrollbar {
  width: 6px;
}
.sidebar-column::-webkit-scrollbar-track {
  background: transparent;
}
.sidebar-column::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.sidebar-panel {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-panel-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

/* Sources Panel */
.source-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.source-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.source-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.source-dot.active { background: var(--color-success); }
.source-dot.inactive { background: var(--color-text-faint); }

.source-name {
  flex: 1;
}

.source-status {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-faint);
}

/* Chart Panel */
.chart-container {
  position: relative;
  height: 180px;
  padding-bottom: var(--space-6);
}

/* Quick Actions */
.quick-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text);
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.action-btn:hover {
  background: var(--color-surface-2);
  border-color: var(--color-primary);
}

.action-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.action-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  cursor: pointer;
}

.action-checkbox input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 14px;
  height: 14px;
}

/* ============================================
   FOOTER
   ============================================ */
.dashboard-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-5);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-left { display: flex; gap: var(--space-4); align-items: center; }
.footer-right { display: flex; gap: var(--space-4); align-items: center; }

.footer-link {
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer-link:hover { color: var(--color-primary); }

/* ============================================
   NOTIFICATION MODAL
   ============================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-title {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-1);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
  font-family: var(--font-body);
}

.form-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.form-input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.form-input::placeholder { color: var(--color-text-faint); }

.form-select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.btn-primary-full {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
}

.btn-primary-full:hover {
  background: var(--color-primary-hover);
}

.modal-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
  text-align: center;
  font-style: italic;
}

/* ============================================
   RESPONSIVE — TABLET (≤ 1024px)
   ============================================ */
@media (max-width: 1024px) {
  .dashboard {
    height: auto;
    min-height: 100dvh;
    grid-template-rows: auto auto auto auto auto;
  }
  html, body {
    height: auto;
    overflow: auto;
    overflow-x: hidden;
  }
  .main-content {
    grid-template-columns: 1fr;
    overflow: visible;
  }
  .sidebar-column {
    display: flex;
    border-top: 1px solid var(--color-border);
    flex-direction: row;
    flex-wrap: wrap;
    overflow: visible;
  }
  .sidebar-panel {
    flex: 1 1 280px;
    min-width: 0;
  }
  .feed-column {
    border-right: none;
    overflow: visible;
  }
  .feed-list {
    padding: var(--space-3);
    overflow: visible;
    max-height: none;
  }
  .feed-filters {
    padding: var(--space-2) var(--space-3);
  }
  .topbar {
    padding: var(--space-2) var(--space-3);
  }
  .kpi-row {
    grid-template-columns: repeat(2, 1fr);
    padding: var(--space-3);
  }
}

/* ============================================
   RESPONSIVE — MOBILE (≤ 640px)
   ============================================ */
@media (max-width: 640px) {
  /* -- Topbar -- */
  .topbar {
    padding: var(--space-2) var(--space-3);
    gap: var(--space-2);
    flex-wrap: nowrap;
  }
  .topbar-left {
    gap: var(--space-2);
    min-width: 0;
    flex-shrink: 1;
  }
  .logo svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
  }
  .logo-text {
    font-size: var(--text-sm);
  }
  .topbar-left .status-indicator {
    display: none;
  }
  .topbar-right {
    gap: var(--space-2);
    flex-shrink: 0;
  }
  .last-scan {
    display: none;
  }
  .topbar-time {
    font-size: 11px;
    white-space: nowrap;
  }
  .theme-toggle-btn {
    padding: 4px;
  }
  .theme-toggle-btn svg {
    width: 16px;
    height: 16px;
  }

  /* -- Critical Banner -- */
  .critical-banner {
    padding: var(--space-2) var(--space-3);
  }
  .critical-banner-text {
    white-space: normal;
    font-size: var(--text-xs);
    line-height: 1.4;
  }

  /* -- KPI Cards -- */
  .kpi-row {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
  }
  .kpi-card {
    padding: var(--space-2) var(--space-3);
  }
  .kpi-label {
    font-size: 10px;
    letter-spacing: 0.04em;
    margin-bottom: 2px;
  }
  .kpi-value {
    font-size: var(--text-base);
  }
  .kpi-delta {
    font-size: 10px;
  }
  .kpi-sparkline {
    height: 20px;
  }
  .kpi-sparkline svg {
    height: 20px;
  }
  .kpi-meta {
    font-size: 10px;
  }

  /* -- Feed Filters -- */
  .feed-filters {
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
  }
  .filter-select {
    width: 100%;
    font-size: var(--text-xs);
    padding: var(--space-2) var(--space-3);
    padding-right: var(--space-8);
  }
  .filter-search {
    width: 100%;
    min-width: unset;
    font-size: var(--text-xs);
    padding: var(--space-2) var(--space-3);
  }

  /* -- Feed List -- */
  .feed-list {
    padding: var(--space-2) var(--space-3);
    gap: var(--space-2);
  }

  /* -- Alert Cards -- */
  .alert-card {
    padding: var(--space-3);
  }
  .alert-header {
    gap: var(--space-1);
  }
  .severity-badge {
    font-size: 10px;
    padding: 1px var(--space-1);
  }
  .alert-timestamp {
    font-size: 10px;
  }
  .alert-title {
    font-size: var(--text-xs);
  }
  .alert-description {
    font-size: 12px;
    line-height: 1.5;
  }
  .alert-meta {
    gap: var(--space-1);
  }
  .meta-tag {
    font-size: 9px;
    padding: 1px 4px;
  }
  .view-details-btn {
    font-size: 9px;
  }

  /* -- Sidebar (stacks vertically on mobile) -- */
  .sidebar-column {
    flex-direction: column;
  }
  .sidebar-panel {
    flex: 1 1 auto;
    padding: var(--space-3);
  }
  .sidebar-panel-title {
    font-size: 11px;
    margin-bottom: var(--space-2);
  }
  .chart-container {
    height: 160px;
  }
  .source-item {
    font-size: 12px;
  }
  .source-status {
    font-size: 9px;
  }
  .action-btn {
    padding: var(--space-2);
    font-size: 12px;
  }

  /* -- Footer -- */
  .dashboard-footer {
    flex-direction: column;
    text-align: center;
    gap: var(--space-2);
    padding: var(--space-3);
  }
  .footer-left, .footer-right {
    flex-direction: column;
    gap: var(--space-1);
  }
  .footer-left span,
  .footer-right span {
    font-size: 11px;
    line-height: 1.4;
  }

  /* -- Modal -- */
  .modal {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin: var(--space-2);
  }
  .modal-title {
    font-size: var(--text-base);
  }
}

/* ============================================
   SCAN SCHEDULE PANEL
   ============================================ */
.scan-schedule {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.scan-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.scan-row-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.scan-row-value {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums lining-nums;
  text-align: right;
}

.scan-row-value.scan-age {
  color: var(--color-success);
}

.scan-row-value.scan-age.stale {
  color: var(--color-warning);
}

.scan-row-value.scan-next {
  color: var(--color-primary);
}

.scan-row-value.scan-countdown {
  color: var(--color-text);
  font-weight: 600;
  font-size: 12px;
}

.scan-row-value.scan-countdown.imminent {
  color: var(--color-success);
  animation: countdownPulse 1s ease-in-out infinite;
}

@keyframes countdownPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.scan-progress-bar {
  width: 100%;
  height: 4px;
  background: var(--color-surface-offset);
  border-radius: 2px;
  overflow: hidden;
  margin: var(--space-1) 0;
}

.scan-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  border-radius: 2px;
  transition: width 1s linear;
  min-width: 0;
}

/* ============================================
   SCAN ACTIVITY LOG
   ============================================ */
.scan-log {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-height: 280px;
  overflow-y: auto;
}

.scan-log::-webkit-scrollbar { width: 4px; }
.scan-log::-webkit-scrollbar-track { background: transparent; }
.scan-log::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }

.scan-log-empty {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-faint);
  text-align: center;
  padding: var(--space-4) 0;
}

.scan-log-entry {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
  align-items: flex-start;
}

.scan-log-entry:last-child {
  border-bottom: none;
}

.scan-log-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.scan-log-entry.log-clear .scan-log-icon {
  color: var(--color-success);
}

.scan-log-entry.log-new .scan-log-icon {
  color: var(--color-high);
}

.scan-log-content {
  flex: 1;
  min-width: 0;
}

.scan-log-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: 2px;
}

.scan-log-time {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.log-badge {
  display: inline-flex;
  align-items: center;
  padding: 0 5px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  background: rgba(249, 115, 22, 0.15);
  color: var(--color-high);
  border-radius: var(--radius-full);
  line-height: 1.6;
}

.scan-log-summary {
  font-family: var(--font-body);
  font-size: 11px;
  color: var(--color-text-faint);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* ============================================
   DATA STATUS INDICATOR
   ============================================ */
.data-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.data-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}
.data-status.live {
  background: rgba(34, 197, 94, 0.15);
  color: #22c55e;
}
.data-status.live::before {
  background: #22c55e;
  animation: statusPulse 2s ease-in-out infinite;
}
.data-status.error {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}
.data-status.error::before {
  background: #ef4444;
}
.data-status.loading {
  background: rgba(234, 179, 8, 0.15);
  color: #eab308;
}
.data-status.loading::before {
  background: #eab308;
  animation: statusPulse 1s ease-in-out infinite;
}
@keyframes statusPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ============================================
   UTILITY
   ============================================ */
.tabular-nums {
  font-variant-numeric: tabular-nums lining-nums;
}