:root {
  --bg-dark: #050816;
  --accent: #0d6efd;
  --accent-soft: rgba(13, 110, 253, 0.08);
}

* {
  scroll-behavior: smooth;
}

body {
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: #f8f9fa;
}

/* Navbar */
.navbar {
  backdrop-filter: blur(12px);
  background-color: rgba(15, 23, 42, 0.96) !important;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  padding-top: 100px;
  padding-bottom: 60px;
  background: radial-gradient(circle at top left, #1f2937 0, #020617 50%, #000 100%);
  color: #f9fafb;
}

.accent-text {
  color: var(--accent);
}

.hero-card {
  background: linear-gradient(135deg, #020617, #111827);
  border-radius: 1.5rem;
  padding: 1.75rem;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.hero-icon {
  font-size: 2.5rem;
  color: var(--accent);
}

/* Section generic */
.section-padding {
  padding: 80px 0;
}

.section-title h2 {
  letter-spacing: 0.03em;
}

/* Timeline */
.timeline {
  position: relative;
  margin-left: 10px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(148, 163, 184, 0.5);
}

.timeline-item {
  position: relative;
  margin-bottom: 30px;
  padding-left: 50px;
}

.timeline-dot {
  position: absolute;
  left: 10px;
  top: 18px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.25);
}

/* Evidence images */
.evidence-item {
  position: relative;
  overflow: hidden;
  border-radius: 0.75rem;
}

.evidence-item img {
  transition: transform 0.3s ease, filter 0.3s ease;
}

.evidence-item:hover img {
  transform: scale(1.05);
  filter: brightness(1.03);
}

/* Project filter buttons */
.btn-group .btn.active {
  background-color: var(--accent);
  color: #fff;
}

/* Badge gradient */
.badge.bg-gradient {
  background: linear-gradient(135deg, #0d6efd, #22c55e);
}

/* Footer */
footer {
  font-size: 0.85rem;
}