/* ============================================
   BRETT ALEXANDER PRESTON — Portfolio
   Modern dark theme with accent gradients
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary: #08080f;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --text-primary: #e8e8ed;
  --text-secondary: #8888a0;
  --accent: #6b8afd;
  --accent-2: #a78bfa;
  --accent-3: #38bdf8;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-w: 1100px;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
a:hover, a:focus { color: var(--accent-3); }

img { max-width: 100%; height: auto; display: block; }

::selection {
  background: var(--accent);
  color: var(--bg-primary);
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* --- Navigation --- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(8, 8, 15, 0.8);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s var(--ease);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding-bottom: 2px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

.nav-social {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.2s var(--ease);
}
.nav-social a:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}
.nav-social svg { width: 16px; height: 16px; fill: var(--text-secondary); }
.nav-social a:hover svg { fill: var(--text-primary); }

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block; width: 20px; height: 2px;
  background: var(--text-primary);
  margin: 4px 0;
  transition: all 0.3s var(--ease);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 64px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(107,138,253,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -10%; left: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(167,139,250,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 6rem 0;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 0.2s forwards;
}

.hero-label::before {
  content: '';
  width: 2rem; height: 1px;
  background: var(--accent);
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 0.35s forwards;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 50%, var(--accent-3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  max-width: 560px;
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 0.5s forwards;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 0.65s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  color: #fff;
}
.btn-primary:hover {
  opacity: 0.9;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(107,138,253,0.25);
}

/* --- Section --- */
.section {
  padding: 7rem 0;
  position: relative;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.section-label::before {
  content: '';
  width: 1.5rem; height: 1px;
  background: var(--accent);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-desc {
  max-width: 560px;
  color: var(--text-secondary);
  margin-top: 1rem;
  font-size: 1.05rem;
}

/* Subtle top border for sections */
.section + .section {
  border-top: 1px solid var(--border);
}

/* --- Featured Project (Full-width card) --- */
.featured-project {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  margin-bottom: 2rem;
  transition: border-color 0.3s var(--ease);
}
.featured-project:hover {
  border-color: var(--border-hover);
}

.featured-img {
  width: 100%;
  aspect-ratio: 21/9;
  object-fit: cover;
  display: block;
  opacity: 0.85;
  transition: opacity 0.4s var(--ease);
}
.featured-project:hover .featured-img { opacity: 1; }

.featured-body {
  padding: 2rem 2.5rem 2.5rem;
}

.featured-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 0.75rem;
}

.featured-body h3 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.featured-body p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  max-width: 700px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  background: rgba(107,138,253,0.08);
  color: var(--accent);
  border: 1px solid rgba(107,138,253,0.15);
}

.project-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.project-links a {
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* --- Project Grid --- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  padding: 2rem;
  transition: all 0.3s var(--ease);
  position: relative;
}
.project-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

.project-card .card-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  background: rgba(107,138,253,0.08);
  border: 1px solid rgba(107,138,253,0.15);
}
.project-card .card-icon svg {
  width: 20px; height: 20px;
  stroke: var(--accent);
  fill: none;
}

.project-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.project-card .card-footer {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* GameDev cards with image */
.gamedev-card {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  overflow: hidden;
  transition: all 0.3s var(--ease);
}
.gamedev-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.gamedev-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  opacity: 0.85;
  transition: opacity 0.4s var(--ease);
}
.gamedev-card:hover img { opacity: 1; }

.gamedev-card .card-body {
  padding: 1.5rem 2rem 2rem;
}

.gamedev-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.gamedev-card .role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 0.75rem;
}

.gamedev-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.gamedev-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* --- Music / Art section --- */
.creative-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.creative-card {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  padding: 2.5rem;
  text-align: center;
  transition: all 0.3s var(--ease);
}
.creative-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

.creative-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.creative-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 1.5rem;
}

.creative-links {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.creative-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all 0.2s var(--ease);
}
.creative-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Footer --- */
.site-footer {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.2s var(--ease);
}
.footer-social a:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.footer-social svg {
  width: 18px; height: 18px;
  fill: var(--text-secondary);
}
.footer-social a:hover svg { fill: var(--text-primary); }

.footer-email {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(136,136,160,0.5);
}

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Intersection observer driven */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.15s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.2s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.25s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.3s; }
.stagger.visible > * { opacity: 0; transform: translateY(16px); }
.stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* --- Grain overlay --- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .project-grid,
  .creative-grid { grid-template-columns: 1fr; }
  .gamedev-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: rgba(8, 8, 15, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
    gap: 1.25rem;
  }
  .hero h1 { font-size: 2.2rem; }
  .hero-desc { font-size: 1rem; }
  .gamedev-grid { grid-template-columns: 1fr; }
  .section { padding: 4rem 0; }
  .featured-body { padding: 1.5rem; }
}