*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-hover: #1c2129;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --critical: #f85149;
  --high: #d29922;
  --medium: #e3b341;
  --low: #3fb950;
  --osv: #a371f7;
  --nvd: #79c0ff;
  --github: #f0883e;
  --hn: #ff7b72;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* Top Bar */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.top-bar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}

.nav-link:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-link.active { color: var(--accent); background: rgba(88,166,255,0.1); }

/* Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.filter-input, .filter-select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.15s;
}

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

.filter-input {
  flex: 1;
  min-width: 200px;
}

.filter-select {
  min-width: 140px;
}

/* Feed List */
.feed-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Threat Card */
.threat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.threat-card:hover {
  background: var(--surface-hover);
  border-color: #3d444d;
}

.severity-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}

.severity-critical { background: rgba(248,81,73,0.15); color: var(--critical); }
.severity-high { background: rgba(210,153,34,0.15); color: var(--high); }
.severity-medium { background: rgba(227,179,65,0.15); color: var(--medium); }
.severity-low { background: rgba(63,185,80,0.15); color: var(--low); }
.severity-unknown { background: rgba(139,148,158,0.15); color: var(--text-muted); }

.threat-body { flex: 1; min-width: 0; }

.threat-title {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.threat-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
}

.tag-vector { background: rgba(88,166,255,0.12); color: var(--accent); }

.tag-framework { background: rgba(139,148,158,0.12); color: var(--text-muted); }

.source-badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.source-osv { color: var(--osv); }
.source-nvd { color: var(--nvd); }
.source-github { color: var(--github); }
.source-hn { color: var(--hn); }

.threat-time {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: auto;
  white-space: nowrap;
}

.threat-link {
  color: var(--text-muted);
  text-decoration: none;
  flex-shrink: 0;
  margin-top: 2px;
  padding: 4px;
  border-radius: 4px;
  transition: color 0.15s;
}

.threat-link:hover { color: var(--accent); }

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 24px;
}

.page-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--font);
}

.page-btn:hover { border-color: var(--accent); color: var(--text); }
.page-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state p { font-size: 16px; margin-top: 16px; }
.empty-hint { font-size: 13px; color: var(--text-muted); opacity: 0.7; }

/* Briefing */
.briefing-wrap { max-width: 720px; margin: 0 auto; }

.briefing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.briefing-header {
  padding: 28px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, var(--surface), #1c2333);
}

.briefing-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 8px;
}

.briefing-title {
  font-size: 22px;
  font-weight: 700;
}

.briefing-stat-row {
  display: flex;
  gap: 24px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.briefing-stat-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.briefing-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: 6px;
}

.briefing-body { padding: 8px 28px 24px; }

.briefing-section-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin: 18px 0 10px;
}

.briefing-threat {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.briefing-threat:last-child { border-bottom: none; }

.briefing-threat-title { font-weight: 600; margin-bottom: 4px; }
.briefing-threat-desc { font-size: 13px; color: var(--text-muted); }

.briefing-vector-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.briefing-footer {
  padding: 16px 28px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

.briefing-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 20px;
  font-family: var(--font);
  transition: opacity 0.15s;
}

.briefing-share-btn:hover { opacity: 0.85; }

/* Stats */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.stat-card-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.stat-card-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
}

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

.chart-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
}

.chart-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.bar-chart { display: flex; flex-direction: column; gap: 8px; }

.bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bar-label {
  width: 130px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: right;
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 22px;
  background: rgba(255,255,255,0.04);
  border-radius: 6px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.4s ease;
  min-width: 2px;
}

.bar-count {
  width: 40px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

/* Sparkline */
.sparkline {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 80px;
  padding-top: 8px;
}

.spark-bar {
  flex: 1;
  background: var(--accent);
  border-radius: 3px 3px 0 0;
  min-height: 2px;
  opacity: 0.7;
  transition: opacity 0.15s;
  position: relative;
}

.spark-bar:hover { opacity: 1; }

.spark-bar::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}

.spark-bar:hover::after { opacity: 1; }

/* Scraper Status Table */
.scraper-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.scraper-table th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.scraper-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}

.status-dot.success { background: var(--low); }
.status-dot.error { background: var(--critical); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  max-width: 700px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: 28px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  line-height: 1;
}

.modal-close:hover { color: var(--text); background: rgba(255,255,255,0.05); }

.modal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-right: 40px;
}

.modal-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 20px;
  white-space: pre-wrap;
  word-break: break-word;
}

.modal-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  font-size: 13px;
  margin-bottom: 20px;
}

.modal-meta-key { color: var(--text-muted); font-weight: 600; }
.modal-meta-val { color: var(--text); }

.modal-raw-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  font-family: var(--font);
}

.modal-raw-toggle:hover { border-color: var(--accent); color: var(--text); }

.modal-raw {
  margin-top: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-muted);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow-y: auto;
}

.modal-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
  margin-top: 12px;
}

.modal-link:hover { text-decoration: underline; }

/* Loading */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 12px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 640px) {
  .filter-bar { flex-direction: column; }
  .filter-input, .filter-select { min-width: 100%; }
  .threat-card { flex-direction: column; gap: 10px; }
  .threat-time { margin-left: 0; }
  .stat-cards { grid-template-columns: 1fr 1fr; }
  .bar-label { width: 90px; font-size: 12px; }
  .modal-card { padding: 20px; }
  .briefing-header { padding: 20px; }
  .briefing-body { padding: 8px 20px 20px; }
}