/* Fonts */
:root {
  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;

  --accent: #7c4dff; /* purple */
  --accent-2: #20c997; /* teal */
}

html, body {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
}

/* Navbar */
.glassy-nav {
  backdrop-filter: saturate(140%) blur(10px);
  background: color-mix(in oklab, var(--bs-body-bg), transparent 20%);
  border-bottom: 1px solid var(--bs-border-color-translucent);
}
.navbar-brand {
  letter-spacing: 0.2px;
}

/* Light mode overrides to ensure good contrast */
[data-bs-theme='light'] .glassy-nav {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: rgba(0,0,0,.08);
  box-shadow: 0 4px 18px rgba(0,0,0,.06);
}
[data-bs-theme='light'] .glassy-nav .navbar-toggler {
  border-color: rgba(0,0,0,.15);
}
[data-bs-theme='light'] .glassy-nav .text-secondary {
  color: var(--bs-emphasis-color) !important; /* make icons readable */
}

/* Hero */
.section-hero {
  position: relative;
  min-height: 92vh;
  padding-top: 5rem; /* to offset fixed nav when very small */
  background:
    radial-gradient(1200px 600px at 10% 0%, color-mix(in oklab, var(--accent), transparent 82%), transparent 82%),
    radial-gradient(1000px 600px at 100% 20%, color-mix(in oklab, var(--accent-2), transparent 85%), transparent 85%);
}
.section-hero .container {
  position: relative;
  z-index: 2;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, transparent 65%, color-mix(in oklab, var(--bs-body-bg), transparent 10%) 100%);
  pointer-events: none;
  z-index: 1;
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  z-index: 0;
}
.bg-gradient-accent {
  background-image: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.text-accent { color: var(--accent); }

/* Sections */
.section-title {
  font-weight: 800;
  margin-bottom: 1.25rem;
}
.section {
  scroll-margin-top: 80px; /* anchor offset for fixed navbar */
}

/* Cards */
.card-glass {
  background: color-mix(in oklab, var(--bs-body-bg), transparent 10%);
  border: 1px solid var(--bs-border-color-translucent);
}
.project-card {
  transition: transform .2s ease, box-shadow .2s ease;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0.75rem 2rem rgba(0,0,0,.2);
}

/* Badges */
.badge {
  font-weight: 600;
  letter-spacing: 0.2px;
}

/* Back to top */
.back-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  display: none;
  align-items: center;
  justify-content: center;
}

/* Forms */
#contactForm .form-label { font-weight: 600; }

/* Footer */
footer {
  background: color-mix(in oklab, var(--bs-body-bg), transparent 0%);
}