:root {
  --bg-color: #0b0f19;
  --card-bg: rgba(18, 24, 38, 0.7);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover-border: rgba(59, 130, 246, 0.4);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --tag-live-bg: rgba(16, 185, 129, 0.15);
  --tag-live-text: #10b981;
  --tag-beta-bg: rgba(59, 130, 246, 0.15);
  --tag-beta-text: #60a5fa;
  --tag-research-bg: rgba(139, 92, 246, 0.15);
  --tag-research-text: #a78bfa;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: 'Plus Jakarta Sans', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.25;
}

.bg-glow-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #3b82f6, transparent);
  top: -150px;
  right: -100px;
}

.bg-glow-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #8b5cf6, transparent);
  bottom: 50px;
  left: -150px;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Header */
.header {
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 25, 0.8);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 500;
  color: #fff;
  letter-spacing: -0.02em;
}

.logo strong {
  color: var(--accent-cyan);
}

.logo-badge {
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 6px;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover {
  color: #fff;
}

.github-link {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  padding: 6px 14px;
  border-radius: 20px;
  color: #fff;
}

.github-link:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Hero */
.hero {
  padding: 70px 0 40px;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: #93c5fd;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3b82f6;
  box-shadow: 0 0 10px #3b82f6;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 18px;
}

.gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #22d3ee 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 36px;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 16px 20px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Filters */
.filters-section {
  margin: 30px 0 24px;
  display: flex;
  justify-content: center;
}

.filter-buttons {
  display: flex;
  gap: 8px;
  background: rgba(18, 24, 38, 0.9);
  padding: 5px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  color: #fff;
}

.filter-btn.active {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

/* Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-hover-border);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tag-live { background: var(--tag-live-bg); color: var(--tag-live-text); }
.tag-beta { background: var(--tag-beta-bg); color: var(--tag-beta-text); }
.tag-research { background: var(--tag-research-bg); color: var(--tag-research-text); }

.tech-stack {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: #6b7280;
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
  letter-spacing: -0.01em;
}

.card-desc {
  color: var(--text-muted);
  font-size: 0.93rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.04);
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
}

.metric {
  display: flex;
  flex-direction: column;
}

.metric-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  font-weight: 700;
  color: #e5e7eb;
}

.metric-lbl {
  font-size: 0.72rem;
  color: #6b7280;
}

.card-footer {
  margin-top: auto;
}

.card-btn {
  display: block;
  text-align: center;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.primary-btn {
  background: #2563eb;
  color: #fff;
}

.primary-btn:hover {
  background: #1d4ed8;
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text-main);
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* Footer */
.footer {
  border-top: 1px solid var(--card-border);
  padding: 32px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: #fff;
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.1rem; }
  .stats-row { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .footer-container { flex-direction: column; gap: 16px; text-align: center; }
}