/* ═══════════════════════════════════════════════
   DeFi Sentinel — CSS
   Dark theme security intelligence dashboard
   ═══════════════════════════════════════════════ */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2332;
  --bg-card-hover: #1e2a3a;
  --bg-input: #0d1321;
  --border: #1e3a5f;
  --border-light: #2a4a6f;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.3);
  --critical: #ef4444;
  --critical-bg: rgba(239, 68, 68, 0.12);
  --critical-border: rgba(239, 68, 68, 0.3);
  --high: #f59e0b;
  --high-bg: rgba(245, 158, 11, 0.12);
  --high-border: rgba(245, 158, 11, 0.3);
  --medium: #3b82f6;
  --medium-bg: rgba(59, 130, 246, 0.12);
  --medium-border: rgba(59, 130, 246, 0.3);
  --low: #22c55e;
  --low-bg: rgba(34, 197, 94, 0.12);
  --low-border: rgba(34, 197, 94, 0.3);
  --success: #22c55e;
  --gradient-start: #3b82f6;
  --gradient-end: #8b5cf6;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Cascadia Code', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', system-ui, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 0%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Layout */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Header */
header {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(10, 14, 23, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  font-size: 26px;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.logo-badge {
  font-size: 10px;
  padding: 2px 8px;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.header-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.header-links a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.github-link {
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
  padding: 6px 14px !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-sm) !important;
}

.github-link:hover {
  border-color: var(--border-light) !important;
}

/* Hero */
.hero {
  padding: 56px 0 40px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: -1px;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto;
}

/* Stats Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 32px 0;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: all 0.3s;
}

.stat-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-card.critical .stat-value { color: var(--critical); }
.stat-card.high .stat-value { color: var(--high); }
.stat-card.accent .stat-value { color: var(--accent); }
.stat-card.success .stat-value { color: var(--success); }

/* Risk Banner */
.risk-banner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  position: relative;
  overflow: hidden;
}

.risk-banner::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
}

.risk-banner.critical { border-color: var(--critical-border); }
.risk-banner.critical::before { background: var(--critical); }
.risk-banner.high { border-color: var(--high-border); }
.risk-banner.high::before { background: var(--high); }
.risk-banner.medium { border-color: var(--medium-border); }
.risk-banner.medium::before { background: var(--medium); }

.risk-level-indicator {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.risk-banner.critical .risk-level-indicator {
  background: var(--critical-bg);
  border: 2px solid var(--critical);
  color: var(--critical);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.15);
  animation: pulse-critical 2s infinite;
}

.risk-banner.high .risk-level-indicator {
  background: var(--high-bg);
  border: 2px solid var(--high);
  color: var(--high);
}

.risk-banner.medium .risk-level-indicator {
  background: var(--medium-bg);
  border: 2px solid var(--medium);
  color: var(--medium);
}

@keyframes pulse-critical {
  0%, 100% { box-shadow: 0 0 20px rgba(239, 68, 68, 0.15); }
  50% { box-shadow: 0 0 30px rgba(239, 68, 68, 0.3); }
}

.risk-info h3 { font-size: 17px; margin-bottom: 4px; }
.risk-info p { color: var(--text-secondary); font-size: 14px; line-height: 1.5; }

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
  background: none;
  font-family: inherit;
}

.tab:hover { color: var(--text-secondary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.3s ease; }

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

/* Filters */
.filters {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  align-items: center;
}

.search-box {
  flex: 1;
  min-width: 240px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-box input::placeholder { color: var(--text-muted); }

.search-box::before {
  content: '🔍';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  pointer-events: none;
}

.filter-select {
  padding: 10px 32px 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.filter-select:focus { border-color: var(--accent); }

/* Event Cards */
.events-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.event-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: all 0.2s;
  position: relative;
}

.event-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateX(4px);
}

.event-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  border-radius: 3px 0 0 3px;
}

.event-card.severity-critical::before { background: var(--critical); }
.event-card.severity-high::before { background: var(--high); }
.event-card.severity-medium::before { background: var(--medium); }
.event-card.severity-low::before { background: var(--low); }

.event-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.event-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  flex: 1;
  color: var(--text-primary);
}

.event-description {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.event-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.event-tags { display: flex; gap: 6px; flex-wrap: wrap; }

.event-date {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.event-loss {
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--critical);
}

.event-loss.zero { color: var(--success); }

.event-protocol {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-critical { background: var(--critical-bg); color: var(--critical); border: 1px solid var(--critical-border); }
.badge-high { background: var(--high-bg); color: var(--high); border: 1px solid var(--high-border); }
.badge-medium { background: var(--medium-bg); color: var(--medium); border: 1px solid var(--medium-border); }
.badge-low { background: var(--low-bg); color: var(--low); border: 1px solid var(--low-border); }

.badge-category {
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.1);
}

.badge-chain {
  background: rgba(139, 92, 246, 0.1);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.badge-status { padding: 3px 10px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge-status.exploited { background: var(--critical-bg); color: var(--critical); border: 1px solid var(--critical-border); }
.badge-status.patched { background: var(--low-bg); color: var(--low); border: 1px solid var(--low-border); }
.badge-status.prevented { background: var(--medium-bg); color: var(--medium); border: 1px solid var(--medium-border); }
.badge-status.investigating { background: var(--high-bg); color: var(--high); border: 1px solid var(--high-border); }
.badge-status.resolved { background: var(--low-bg); color: var(--low); border: 1px solid var(--low-border); }
.badge-status.monitoring { background: var(--medium-bg); color: var(--medium); border: 1px solid var(--medium-border); }
.badge-status.confirmed-rug { background: var(--critical-bg); color: var(--critical); border: 1px solid var(--critical-border); }
.badge-status.shutdown { background: var(--critical-bg); color: var(--critical); border: 1px solid var(--critical-border); }

/* Analysis Section */
.analysis-section { margin-bottom: 32px; }

.analysis-section h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brief-summary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  white-space: pre-line;
  margin-bottom: 24px;
}

.findings-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.findings-list li {
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.findings-list li::before {
  content: '▹';
  color: var(--accent);
  font-weight: bold;
  flex-shrink: 0;
  margin-top: 1px;
}

.threat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.threat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all 0.2s;
}

.threat-card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow);
}

.threat-card h4 {
  font-size: 15px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.threat-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.threat-card .recommendation {
  font-size: 12px;
  padding: 10px 12px;
  background: rgba(59, 130, 246, 0.06);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-sm);
  color: var(--accent);
  line-height: 1.5;
}

.threat-card .recommendation::before { content: '💡 '; }

.threat-protocols { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 10px; }

.threat-protocols span {
  font-size: 11px;
  padding: 2px 8px;
  background: rgba(255,255,255,0.05);
  border-radius: 999px;
  color: var(--text-muted);
}

/* Risk Table */
.risk-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.risk-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.risk-table th {
  text-align: left;
  padding: 14px 16px;
  background: var(--bg-card);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.risk-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: middle;
}

.risk-table tr:hover td { background: rgba(255,255,255,0.02); }
.risk-table tr:last-child td { border-bottom: none; }

.risk-score-bar { display: flex; align-items: center; gap: 8px; }

.risk-score-fill {
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.08);
  flex: 1;
  max-width: 100px;
  position: relative;
  overflow: hidden;
}

.risk-score-fill::after {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  border-radius: 3px;
  transition: width 0.6s ease;
}

.risk-score-fill.critical::after { background: var(--critical); }
.risk-score-fill.high::after { background: var(--high); }
.risk-score-fill.medium::after { background: var(--medium); }
.risk-score-fill.low::after { background: var(--low); }

.risk-score-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  min-width: 24px;
}

.risk-score-num.critical { color: var(--critical); }
.risk-score-num.high { color: var(--high); }
.risk-score-num.medium { color: var(--medium); }
.risk-score-num.low { color: var(--low); }

.risk-factors { display: flex; flex-wrap: wrap; gap: 4px; }

.risk-factor {
  font-size: 11px;
  padding: 2px 8px;
  background: rgba(255,255,255,0.05);
  border-radius: 999px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Trend & Recommendations */
.trend-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  line-height: 1.8;
  color: var(--text-secondary);
  font-size: 14px;
  white-space: pre-line;
  margin-bottom: 24px;
}

.recommendations-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 8px;
}

.recommendations-list li {
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.recommendations-list li::before {
  content: '✓';
  color: var(--success);
  font-weight: bold;
  flex-shrink: 0;
}

/* Footer */
footer {
  padding: 40px 0;
  margin-top: 60px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

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

/* Loading */
.loading {
  text-align: center;
  padding: 48px;
  color: var(--text-muted);
  font-size: 14px;
}

.no-results {
  text-align: center;
  padding: 48px;
  color: var(--text-muted);
}

.no-results p { font-size: 14px; }

/* Responsive */
@media (max-width: 768px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .risk-banner { flex-direction: column; text-align: center; gap: 16px; }
  .header-links a:not(.github-link) { display: none; }
  .threat-cards { grid-template-columns: 1fr; }
  .recommendations-list { grid-template-columns: 1fr; }
  .filters { flex-direction: column; }
  .search-box { min-width: 100%; }
  .filter-select { width: 100%; }
  .event-header { flex-direction: column; gap: 8px; }
}

@media (max-width: 480px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat-card { padding: 14px; }
  .stat-value { font-size: 24px; }
  .hero h1 { font-size: 26px; }
  .hero p { font-size: 15px; }
}