:root{
  --bg: #0a0b10;
  --bg-2: #0f1118;
  --text: #e6e9f0;
  --muted: #a6a9b6;
  --accent: #6cf9ff;
  --accent-2: #8a6cff;
  --card: rgba(255,255,255,0.06);
  --glass: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.1);
}

*{ box-sizing: border-box; }
html, body{
  height: 100%;
  background: var(--bg); /* video shows through */
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  scroll-behavior: smooth; /* native smooth scrolling for anchors */
}
body{ margin: 0; overflow-x: hidden; cursor: crosshair; }

/* Fullscreen background video behind the WebGL canvas */
#bgVideo{
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  z-index: 0;
  filter: saturate(1.1) contrast(1.0) brightness(0.65);
}

/* Dimming overlay to improve text contrast */
#overlay{
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(120% 120% at 50% 20%, rgba(5,6,11,0.85) 0%, rgba(5,6,11,0.65) 40%, rgba(5,6,11,0.45) 100%);
  opacity: 0.8;
  transition: opacity .4s ease;
}
body.video-playing #overlay{
  opacity: 0.45;
}

/* Loading screen */
#loader{
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background:
    radial-gradient(120% 120% at 50% 20%, rgba(5,6,11,0.92) 0%, rgba(5,6,11,0.78) 40%, rgba(5,6,11,0.6) 100%);
  backdrop-filter: blur(6px);
  transition: opacity .3s ease, visibility .3s ease;
}
#loader.loaded{
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.loader-inner{ text-align: center; }
.loader-brand{ align-items: center; justify-content: center; font-size: 18px; }
.loader-spinner{
  width: 64px; height: 64px; margin: 12px auto 10px;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: var(--accent);
  border-left-color: var(--accent-2);
  animation: spin 1s linear infinite;
  box-shadow: 0 0 24px rgba(108,249,255,0.35);
}
.loader-text{ color: var(--muted); margin-top: 6px; letter-spacing: 0.5px; }
.loader-enter{
  margin-top: 10px;
  border: none;
  cursor: pointer;
}

@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce){
  .loader-spinner{ animation: none; }
}

/* WebGL canvas sits on top of video + overlay */
#scene{
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 2;
  pointer-events: none; /* never block clicks on header/content */
}

.section{
  position: relative;
  z-index: 3;
  padding: 96px 24px;
  max-width: 1200px;
  margin: 0 auto;
  opacity: 1; /* default visible */
  transform: none; /* default visible */
  transition: opacity .6s ease, transform .6s ease;
  scroll-margin-top: 72px; /* account for fixed header height */
}
.section.revealed{
  opacity: 1;
  transform: translateY(0);
}

.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px;
  z-index: 10; /* ensure above canvas and overlay */
  background: linear-gradient(to bottom, rgba(10,11,16,0.8), transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .header-actions{
  display: flex;
  align-items: center;
  gap: 8px; /* theme sits close to music */
}
.site-header nav a{
  margin: 0 10px;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s ease, transform .2s ease;
}
.site-header nav a:hover{ color: var(--text); transform: translateY(-1px); }
.brand{ display: flex; align-items: center; gap: 8px; font-weight: 800; letter-spacing: 2px; }
.logo-dot{ width: 12px; height: 12px; border-radius: 50%; background: linear-gradient(45deg, var(--accent), var(--accent-2)); box-shadow: 0 0 16px var(--accent); }
.brand-name{ color: var(--text); font-weight: 800; }

#themeToggle{
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
}
#musicToggle{
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
}

/* Alt theme */
html[data-theme="alt"]{
  --accent: #ffae6c;
  --accent-2: #ff6cff;

  /* Broader palette shift for clear theme change */
  --text: #f6f7fb;
  --muted: #c9c6d9;
  --bg: #0b0a14;
  --bg-2: #0f0d1a;
  --card: rgba(255,255,255,0.07);
  --glass: rgba(255,255,255,0.10);
  --border: rgba(255,255,255,0.14);
}

/* Alt theme: tune video and overlay for contrast */
html[data-theme="alt"] #bgVideo{
  filter: saturate(1.18) contrast(1.06) brightness(0.58) hue-rotate(22deg);
}
html[data-theme="alt"] #overlay{
  background: radial-gradient(120% 120% at 50% 20%, rgba(14,10,18,0.90) 0%, rgba(14,10,18,0.72) 40%, rgba(14,10,18,0.52) 100%);
}
html[data-theme="alt"] body.video-playing #overlay{
  opacity: 0.38;
}

.hero{
  padding-top: 140px;
  text-align: center;
}
.hero .hero-content{
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}
.hero h1{
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
.subtitle{
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
.hero .avatar{
  width: 128px; height: 128px; border-radius: 50%;
  background: transparent;
  border: 2px solid var(--border);
  padding: 0;
  box-shadow: 0 30px 80px rgba(0,0,0,0.35);
  object-fit: cover; /* ensure proper circle crop */
  object-position: center;
  display: block;
  margin: 0 auto;
}
.hero h1{
  font-size: clamp(24px, 5vw, 48px);
  margin: 20px 0 8px;
}
.accent{
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 12px rgba(108,249,255,0.3);
}
.subtitle{ color: var(--muted); margin-bottom: 24px; text-shadow: 0 2px 6px rgba(0,0,0,0.45); }

.cta{ display: flex; justify-content: center; gap: 12px; margin-bottom: 24px; }
.btn{
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  padding: 12px 18px;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn.primary{
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #0b0c12;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(108,249,255,0.2);
}
.btn.ghost{ background: var(--glass); color: var(--text); }
.btn.small{ padding: 8px 12px; font-size: 14px; }
.btn:hover{ transform: translateY(-2px) scale(1.02); }

.stats{
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  max-width: 720px; margin: 0 auto;
}
.stat{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  backdrop-filter: blur(8px);
}
.stat-value{ font-size: 24px; font-weight: 800; }
.stat-label{ color: var(--muted); }

h2{ font-size: 28px; margin-bottom: 16px; text-shadow: 0 2px 6px rgba(0,0,0,0.45); }
.skills-grid{ display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.skill{
  background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px;
}
.skill span{ display: inline-block; margin-bottom: 8px; color: var(--muted); }
.bar{ width: 100%; height: 8px; background: rgba(255,255,255,0.08); border-radius: 999px; overflow: hidden; }
.bar div{ height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); box-shadow: 0 0 20px rgba(108,249,255,0.35); }

.cards{
  display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px;
}
.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  position: relative;
  overflow: hidden;
}
.card::after{
  content: "";
  position: absolute; inset: -40%; transform: rotate(20deg);
  background: radial-gradient(200px 200px at 30% 10%, rgba(108,249,255,0.10), transparent 60%);
  pointer-events: none;
}
.card{
  --mx: 50%;
  --my: 50%;
  background:
    radial-gradient(220px 220px at var(--mx) var(--my), rgba(108,249,255,0.08), transparent 60%),
    var(--card);
}
.card .status{ color: #9af0ff; font-weight: 600; }
.card .tags{ color: var(--muted); font-size: 14px; }

.timeline{
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px;
}
.tl-item{
  background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 16px;
}
.year{ color: var(--muted); font-weight: 600; }

.contact-grid{
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 16px;
}
.contact-card{
  background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 16px;
}
.contacts{ list-style: none; padding: 0; margin: 0; }
.contacts li{ display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed var(--border); }
.contacts li span{ color: var(--muted); }
.contacts a{ color: var(--text); text-decoration: none; }
.contacts a:hover{ color: var(--accent); }

.contact-form{
  background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 16px;
  display: grid; gap: 12px;
}
.contact-form label{ display: grid; gap: 6px; color: var(--muted); }
.contact-form input, .contact-form textarea{
  background: var(--bg-2); color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}
.contact-form input:focus, .contact-form textarea:focus{ outline: 1px solid var(--accent); }

.site-footer{
  padding: 24px; text-align: center; color: var(--muted);
}

/* 3D tilt foundations */
.hero-content{ transform-style: preserve-3d; will-change: transform; }
.cards{ perspective: 900px; }
.card{ transition: transform .25s ease; }

/* Responsive */
@media (max-width: 1024px){
  .cards{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .timeline{ grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 640px){
  .stats{ grid-template-columns: 1fr; }
  .skills-grid{ grid-template-columns: 1fr; }
  .cards{ grid-template-columns: 1fr; }
  .timeline{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
}