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

:root {
  --bg: #0a0e1a;
  --bg-card: #131824;
  --bg-elevated: #1a2234;
  --border: #262f44;
  --text: #e4e9f2;
  --text-dim: #8892a8;
  --accent: #00d9ff;
  --accent-glow: #00d9ff33;
  --critical: #ff3860;
  --high: #ff8c42;
  --medium: #ffd23f;
  --low: #3bcf6c;
  --success: #00e676;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'SF Mono', 'Monaco', 'Menlo', 'Consolas', monospace;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 15% 50%, rgba(0, 217, 255, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 85% 30%, rgba(255, 56, 96, 0.04) 0%, transparent 50%);
}

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* HEADER */
.site-header {
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  padding: 16px 0;
}
.nav { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; }
.logo { color: var(--accent); font-size: 22px; font-weight: bold; letter-spacing: -2px; }
.brand h1 { font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: 1px; }
.tagline { color: var(--text-dim); font-size: 11px; padding-left: 12px; border-left: 1px solid var(--border); }

.main-nav { display: flex; gap: 6px; }
.main-nav a {
  color: var(--text-dim); text-decoration: none; padding: 8px 14px;
  border-radius: 4px; font-size: 13px; font-weight: 500;
  transition: all 0.2s;
}
.main-nav a:hover { color: var(--accent); background: var(--bg-elevated); }
.main-nav a.active { color: var(--accent); }

.live-badge {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-elevated); padding: 6px 12px; border-radius: 4px;
  font-size: 11px; color: var(--success); font-weight: 700; letter-spacing: 1px;
  border: 1px solid var(--border);
}
.pulse {
  width: 8px; height: 8px; background: var(--success); border-radius: 50%;
  box-shadow: 0 0 8px var(--success);
  animation: pulse 1.5s infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* HERO */
.hero {
  padding: 80px 0 60px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, transparent 0%, rgba(0, 217, 255, 0.03) 100%);
}
.hero h2 {
  font-size: 42px; font-weight: 700; margin-bottom: 16px;
  background: linear-gradient(90deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: -1px;
}
.hero p { font-size: 17px; color: var(--text-dim); max-width: 760px; margin-bottom: 40px; }

.stats-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  margin-top: 30px;
}
.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 20px; border-radius: 6px;
  display: flex; flex-direction: column; gap: 6px;
}
.stat-num {
  font-size: 28px; font-weight: 700; color: var(--accent);
}
.stat-label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; }

/* SECTIONS */
.main-content { padding: 60px 0; }
.section { margin-bottom: 60px; }
.section-header {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 24px; padding-bottom: 12px;
  border-bottom: 1px solid var(--border); flex-wrap: wrap; gap: 10px;
}
.section-header h3 { font-size: 22px; color: var(--text); font-weight: 600; }
.source { color: var(--text-dim); font-size: 11px; }

/* CARDS */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; }

.alert-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-left: 4px solid var(--critical);
  border-radius: 6px; padding: 18px;
  transition: all 0.2s;
}
.alert-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.alert-card .cve-id {
  font-size: 13px; color: var(--accent); font-weight: 700; margin-bottom: 8px;
}
.alert-card h4 { font-size: 14px; line-height: 1.5; margin-bottom: 10px; color: var(--text); }
.alert-card .meta { display: flex; gap: 10px; font-size: 11px; color: var(--text-dim); flex-wrap: wrap; }
.alert-card .score {
  background: var(--critical); color: white; padding: 2px 8px; border-radius: 3px;
  font-weight: 700;
}

/* CVE LIST */
.cve-list { display: flex; flex-direction: column; gap: 10px; }
.cve-row {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px; padding: 14px 18px;
  display: grid; grid-template-columns: 160px 1fr auto; gap: 16px; align-items: center;
  transition: all 0.15s; text-decoration: none; color: inherit;
}
.cve-row:hover { border-color: var(--accent); background: var(--bg-elevated); }
.cve-row .cve-id { color: var(--accent); font-weight: 700; font-size: 13px; }
.cve-row .cve-desc { color: var(--text); font-size: 13px; }
.cve-row .cve-score {
  font-weight: 700; font-size: 12px; padding: 4px 10px; border-radius: 3px;
  min-width: 70px; text-align: center; color: white;
}
.score-critical { background: var(--critical); }
.score-high { background: var(--high); }
.score-medium { background: var(--medium); color: #000; }
.score-low { background: var(--low); }
.score-none { background: var(--text-dim); }

/* NEWS */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 18px; }
.news-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px; padding: 20px;
  transition: all 0.2s; text-decoration: none; color: inherit;
  display: flex; flex-direction: column; gap: 10px;
}
.news-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.news-card .news-source {
  font-size: 10px; color: var(--accent); font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
}
.news-card h4 { font-size: 15px; line-height: 1.4; color: var(--text); font-weight: 600; }
.news-card .news-date { font-size: 11px; color: var(--text-dim); margin-top: auto; }
.news-card p { color: var(--text-dim); font-size: 13px; line-height: 1.5; }

/* LOADING / EMPTY */
.loading, .error {
  color: var(--text-dim); padding: 24px; background: var(--bg-card);
  border: 1px dashed var(--border); border-radius: 6px; text-align: center;
  font-size: 13px;
}
.error { border-color: var(--critical); color: var(--critical); }

/* ABOUT */
.about-section { background: var(--bg-card); border: 1px solid var(--border); padding: 40px; border-radius: 8px; }
.about-section h3 { margin-bottom: 16px; }
.about-section p { color: var(--text-dim); margin-bottom: 14px; }
.disclaimer { font-size: 12px; color: var(--text-dim); padding-top: 16px; border-top: 1px solid var(--border); margin-top: 10px; }

/* FOOTER */
.site-footer {
  background: var(--bg-card); border-top: 1px solid var(--border);
  padding: 28px 0; text-align: center; margin-top: 60px;
}
.site-footer p { color: var(--text-dim); font-size: 12px; margin-bottom: 6px; }
.footer-links { font-size: 11px; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero h2 { font-size: 30px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .cve-row { grid-template-columns: 1fr; gap: 8px; }
  .main-nav { display: none; }
  .tagline { display: none; }
}