*, *::before, *::after { box-sizing: border-box; }

:root,
[data-theme="dark"] {
  --bg: #050508;
  --surface: #0c0c12;
  --surface-2: #12121c;
  --border: #2a2a3a;
  --text: #f0eef8;
  --muted: #b8b8d0;
  --faint: #7a7a96;
  --neon-cyan: #00f0ff;
  --neon-magenta: #ff2d95;
  --neon-lime: #b8ff3c;
  --neon-orange: #ff6b2b;
  --cat-systems: #00f0ff;
  --cat-ml: #c77dff;
  --cat-fullstack: #b8ff3c;
  --cat-hackathons: #ff6b2b;
  --header-bg: rgba(5, 5, 8, 0.75);
  --spotlight: rgba(0, 240, 255, 0.07);
  --card-shadow: none;
  --card-shadow-hover: none;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #f5f3ee;
  --surface: #ffffff;
  --surface-2: #f0ece4;
  --border: #ddd6ca;
  --text: #1c1916;
  --muted: #5a5349;
  --faint: #8a8176;
  --neon-cyan: #0b6e7a;
  --neon-magenta: #a83266;
  --neon-lime: #3d6b28;
  --neon-orange: #b85a24;
  --cat-systems: #0b6e7a;
  --cat-ml: #6a4d96;
  --cat-fullstack: #3d6b28;
  --cat-hackathons: #b85a24;
  --header-bg: rgba(245, 243, 238, 0.9);
  --spotlight: rgba(11, 110, 122, 0.05);
  --card-shadow: 0 1px 3px rgba(28, 25, 22, 0.06), 0 4px 16px rgba(28, 25, 22, 0.04);
  --card-shadow-hover: 0 4px 20px rgba(28, 25, 22, 0.1);
  color-scheme: light;
}

:root {
  --font-display: "Syne", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  cursor: crosshair;
}

a { color: inherit; text-decoration: none; }

/* Canvas + overlays */
#particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.spotlight {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--spotlight), transparent 70%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.04;
  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-size: 180px;
}

.scanlines {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.35;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

[data-theme="light"] .scanlines { display: none; }

[data-theme="light"] .noise { opacity: 0.025; }

[data-theme="light"] body { cursor: default; }

[data-theme="light"] .spotlight { opacity: 0.6; }

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 0.5rem 1rem;
  background: var(--neon-cyan);
  color: #000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--neon-cyan);
  letter-spacing: -0.03em;
}

.blink { animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}

.nav-links a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s, text-shadow 0.2s;
}
.nav-links a:hover {
  color: var(--neon-magenta);
  text-shadow: 0 0 12px var(--neon-magenta);
}

[data-theme="light"] .nav-links a:hover {
  text-shadow: none;
}

.nav-actions { display: flex; gap: 0.5rem; align-items: center; }

.theme-toggle {
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  transition: border-color 0.2s, color 0.2s;
}
.theme-toggle:hover { border-color: var(--neon-cyan); color: var(--neon-cyan); }

.nav-cta {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
  border: 1px solid var(--neon-magenta);
  color: var(--neon-magenta);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.nav-cta:hover {
  background: var(--neon-magenta);
  color: #000;
  box-shadow: 0 0 24px rgba(255, 45, 149, 0.5);
}

[data-theme="light"] .nav-cta:hover {
  box-shadow: 0 2px 12px rgba(168, 50, 102, 0.25);
}

/* Hero banner strip */
.hero-banner {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 0.55rem 1.5rem;
}

.hero-banner-line {
  max-width: 1200px;
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
  text-align: center;
}

/* Hero */
main { position: relative; z-index: 10; }

.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2.5rem;
  min-height: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.hero-title {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
  margin: 0;
  font-weight: 700;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 10vw, 5rem);
  letter-spacing: -0.03em;
  color: var(--text);
}

.hero-name-accent {
  color: var(--neon-cyan);
  font-weight: 600;
}

.hero-sub {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn-chaos {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.85rem 1.5rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-chaos:hover { transform: skewX(-3deg) scale(1.03); }

.btn-primary {
  background: var(--neon-lime);
  color: #000;
  box-shadow: 4px 4px 0 var(--neon-magenta);
}
.btn-primary:hover { box-shadow: 6px 6px 0 var(--neon-cyan); }

[data-theme="light"] .btn-primary {
  background: var(--neon-cyan);
  color: #fff;
  box-shadow: 0 2px 8px rgba(11, 110, 122, 0.25);
}
[data-theme="light"] .btn-primary:hover {
  box-shadow: 0 4px 14px rgba(11, 110, 122, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--neon-cyan); color: var(--neon-cyan); }

[data-theme="light"] .btn-ghost {
  background: var(--surface);
  box-shadow: var(--card-shadow);
}
[data-theme="light"] .btn-ghost:hover {
  background: var(--surface-2);
}

/* Sections */
.section { padding: 4rem 1.5rem; }

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text);
  margin: 0 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.label-num {
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

/* About */
.about-panel {
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--neon-cyan);
  position: relative;
  isolation: isolate;
  box-shadow: var(--card-shadow);
}

.about-lead {
  font-size: 1.05rem;
  color: var(--text);
  margin: 0 0 1.5rem;
  max-width: 52ch;
  line-height: 1.7;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.about-stat {
  padding: 0.85rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--neon-cyan);
}

.stat-key {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.stat-val { font-weight: 600; font-size: 0.9rem; color: var(--text); }

/* Projects */
.projects-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.scroll-hint {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 1.25rem;
  animation: pulse-hint 2s ease-in-out infinite;
}

@keyframes pulse-hint {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.category-filters { display: flex; flex-wrap: wrap; gap: 0.35rem; }

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.filter-btn:hover { border-color: var(--neon-cyan); }
.filter-btn.is-active {
  color: #000;
  border-color: transparent;
}
.filter-btn.is-active[data-filter="all"] { background: var(--neon-lime); }
.f-systems.is-active { background: var(--cat-systems); color: #000; }
.f-ml.is-active { background: var(--cat-ml); color: #000; }
.f-fullstack.is-active { background: var(--cat-fullstack); color: #000; }
.f-hackathons.is-active { background: var(--cat-hackathons); color: #000; }

[data-theme="light"] .filter-btn.is-active[data-filter="all"],
[data-theme="light"] .f-systems.is-active,
[data-theme="light"] .f-ml.is-active,
[data-theme="light"] .f-fullstack.is-active,
[data-theme="light"] .f-hackathons.is-active {
  color: #fff;
}

.project-track {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  overflow-y: visible;
  padding: 1.5rem 0.5rem 2.5rem;
  scroll-snap-type: x mandatory;
  scroll-padding: 1.5rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--neon-magenta) var(--surface);
}

[data-theme="light"] .project-track {
  scrollbar-color: var(--border) transparent;
}

.project-track::-webkit-scrollbar { height: 6px; }
.project-track::-webkit-scrollbar-track { background: var(--surface); }
.project-track::-webkit-scrollbar-thumb { background: var(--neon-magenta); border-radius: 3px; }

[data-theme="light"] .project-track::-webkit-scrollbar-thumb {
  background: var(--border);
}

.wild-card {
  flex: 0 0 min(320px, 85vw);
  scroll-snap-align: start;
}

.wild-card[hidden],
.wild-card.is-hidden {
  display: none !important;
}

.wild-card-hero { flex: 0 0 min(400px, 90vw); }

#filter-status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 1rem;
}

.wild-card > a,
.wild-card > .card-static {
  display: block;
  position: relative;
  height: 100%;
  min-height: 260px;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  transform-style: preserve-3d;
  will-change: transform;
  box-shadow: var(--card-shadow);
}

.wild-card > a::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 60%, color-mix(in srgb, var(--card-glow) 15%, transparent));
  pointer-events: none;
}

[data-theme="light"] .wild-card > a::after {
  background: linear-gradient(135deg, transparent 70%, color-mix(in srgb, var(--card-glow) 8%, transparent));
}

.accent-systems { --card-glow: var(--cat-systems); }
.accent-ml { --card-glow: var(--cat-ml); }
.accent-fullstack { --card-glow: var(--cat-fullstack); }
.accent-hackathons { --card-glow: var(--cat-hackathons); }

.wild-card > a:hover {
  border-color: var(--card-glow);
  box-shadow: 0 0 30px color-mix(in srgb, var(--card-glow) 35%, transparent),
              inset 0 0 30px color-mix(in srgb, var(--card-glow) 8%, transparent);
}

[data-theme="light"] .wild-card > a:hover {
  box-shadow: var(--card-shadow-hover);
  border-color: color-mix(in srgb, var(--card-glow) 50%, var(--border));
}

.card-num {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--border);
  line-height: 1;
  pointer-events: none;
}

.card-tag, .card-tags { display: inline-flex; gap: 0.3rem; margin-bottom: 0.75rem; }

.card-tag {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  padding: 0.2rem 0.5rem;
  border: 1px solid currentColor;
}

.cat-systems { color: var(--cat-systems); }
.cat-ml { color: var(--cat-ml); }
.cat-fullstack { color: var(--cat-fullstack); }
.cat-hackathons { color: var(--cat-hackathons); }

.wild-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
  line-height: 1.15;
  position: relative;
  z-index: 1;
}

.wild-card p {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.card-lang {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--faint);
  border: 1px solid var(--border);
  padding: 0.2rem 0.5rem;
}

.card-arrow {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  font-size: 1.5rem;
  color: var(--card-glow);
  transition: transform 0.2s;
}
.wild-card > a:hover .card-arrow { transform: translate(4px, -4px); }

.wild-card-soon > .card-static {
  border-style: dashed;
  opacity: 0.7;
}

.card-soon {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--neon-orange);
  animation: pulse-hint 1.5s infinite;
}

/* Contact */
.contact-chaos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-big {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color 0.2s, box-shadow 0.2s;
  box-shadow: var(--card-shadow);
}

.contact-big:first-child:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.2);
}

.contact-big:last-child:hover {
  border-color: var(--neon-magenta);
  box-shadow: 0 0 40px rgba(255, 45, 149, 0.2);
}

[data-theme="light"] .contact-big:first-child:hover {
  box-shadow: var(--card-shadow-hover);
}

[data-theme="light"] .contact-big:last-child:hover {
  box-shadow: var(--card-shadow-hover);
}

.contact-type {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--faint);
}

.contact-handle {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 10;
  padding: 2rem;
  text-align: center;
  font-size: 0.72rem;
  color: var(--faint);
  border-top: 1px solid var(--border);
}

.footer-glitch { color: var(--neon-cyan); }

[data-theme="light"] .site-header {
  box-shadow: 0 1px 0 rgba(28, 25, 22, 0.06);
}

[data-theme="light"] .card-num {
  color: color-mix(in srgb, var(--border) 80%, var(--faint));
}

/* Tilt */
.tilt-card { will-change: transform; }

/* Responsive */
@media (max-width: 700px) {
  .nav-links { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-chaos { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 2.5rem; }
  body { cursor: auto; }
  .spotlight { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .blink, .scroll-hint, .card-soon {
    animation: none !important;
  }
  .wild-card.is-dimmed { filter: none; }
}