/* ==============================
   LIQUID / ABSTRACT ART — v2
   Three.js WebGL · GSAP · Lenis
   ============================== */

/* --- Theme Variables --- */
[data-theme="navy"] {
  --bg: #060818;
  --bg-alt: #0a0e24;
  --bg-card: rgba(10,16,44,0.45);
  --text: #b8c8e8;
  --text-dim: #5a70a0;
  --accent: #6c8cff;
  --accent-rgb: 108,140,255;
  --accent-glow: rgba(108,140,255,0.18);
  --heading: #d0dcff;
  --border: rgba(108,140,255,0.1);
  --grad-1: #2a1aff;
  --grad-2: #6c8cff;
  --grad-3: #00d4ff;
}
[data-theme="dark"] {
  --bg: #08000e;
  --bg-alt: #0e0018;
  --bg-card: rgba(16,0,28,0.45);
  --text: #d0b8e8;
  --text-dim: #8060a8;
  --accent: #c060ff;
  --accent-rgb: 192,96,255;
  --accent-glow: rgba(192,96,255,0.18);
  --heading: #e8d0ff;
  --border: rgba(192,96,255,0.1);
  --grad-1: #8000ff;
  --grad-2: #c060ff;
  --grad-3: #ff40c0;
}
[data-theme="light"] {
  --bg: #f8f4ff;
  --bg-alt: #f0eaff;
  --bg-card: rgba(255,255,255,0.5);
  --text: #2a1a40;
  --text-dim: #6a5a80;
  --accent: #7c3aed;
  --accent-rgb: 124,58,237;
  --accent-glow: rgba(124,58,237,0.1);
  --heading: #1a0a30;
  --border: rgba(124,58,237,0.08);
  --grad-1: #7c3aed;
  --grad-2: #a78bfa;
  --grad-3: #ec4899;
}
[data-theme="vibrant"] {
  --bg: #06000a;
  --bg-alt: #0e0014;
  --bg-card: rgba(20,0,26,0.45);
  --text: #f0d0ff;
  --text-dim: #b880d8;
  --accent: #ff2aff;
  --accent-rgb: 255,42,255;
  --accent-glow: rgba(255,42,255,0.18);
  --heading: #ffe0ff;
  --border: rgba(255,42,255,0.12);
  --grad-1: #ff00ff;
  --grad-2: #ff2aff;
  --grad-3: #00ffc8;
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: auto; /* Lenis handles smoothness */ }
body {
  font-family: 'Sora', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  overflow-x: hidden;
  transition: background 0.5s, color 0.5s;
  cursor: none;
}

/* --- Loader --- */
.loader {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
}
.loader__inner { text-align: center; }
.loader__count {
  font-family: 'Space Mono', monospace;
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2), var(--grad-3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1;
}
.loader__bar { width: 180px; height: 2px; background: var(--border); margin: 1.5rem auto 0; border-radius: 2px; overflow: hidden; }
.loader__fill { width: 0; height: 100%; background: var(--accent); border-radius: 2px; }

/* --- Grain --- */
.grain {
  position: fixed; inset: 0; z-index: 9998;
  pointer-events: none;
  opacity: 0.35;
  mix-blend-mode: overlay;
}

/* --- Custom Cursor --- */
.cursor {
  position: fixed; width: 44px; height: 44px;
  border: 1px solid rgba(var(--accent-rgb), 0.5);
  border-radius: 50%; pointer-events: none; z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.35s cubic-bezier(.22,1,.36,1), height 0.35s cubic-bezier(.22,1,.36,1),
              border-color 0.3s, background 0.3s;
  mix-blend-mode: difference;
}
.cursor--hover { width: 64px; height: 64px; border-color: rgba(var(--accent-rgb),0.8); background: rgba(var(--accent-rgb),0.06); }
.cursor-dot {
  position: fixed; width: 6px; height: 6px;
  background: rgb(var(--accent-rgb)); border-radius: 50%;
  pointer-events: none; z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.15s;
}
.cursor-dot--hover { transform: translate(-50%, -50%) scale(0); }
@media (pointer: coarse) { .cursor, .cursor-dot { display: none !important; } body { cursor: auto; } }

/* --- WebGL Canvas --- */
#webgl {
  position: fixed; inset: 0; z-index: 0;
  pointer-events: none;
}

/* --- Container --- */
.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; position: relative; z-index: 2; }
.section { padding: 8rem 0; position: relative; z-index: 2; background: var(--bg); }
.section--alt { background: var(--bg-alt); }

/* --- Section Header --- */
.sec-header { margin-bottom: 3.5rem; }
.sec-label {
  display: block; font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 0.5rem;
}
.sec-title {
  font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2), var(--grad-3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* --- Fluid Card --- */
.fluid-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: relative; overflow: hidden;
  transition: border-color 0.4s, box-shadow 0.4s;
}
.fluid-card::after {
  content: '';
  position: absolute; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(var(--accent-rgb),0.12) 0%, transparent 70%);
  top: var(--my, -150px); left: var(--mx, -150px);
  transform: translate(-50%, -50%);
  opacity: 0; transition: opacity 0.4s;
  pointer-events: none; border-radius: 50%;
}
.fluid-card:hover::after { opacity: 1; }
.fluid-card:hover { border-color: rgba(var(--accent-rgb),0.25); box-shadow: 0 20px 60px rgba(0,0,0,0.15), 0 0 40px var(--accent-glow); }

/* --- Pill --- */
.pill {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.4rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem; color: var(--text-dim);
  text-decoration: none;
  transition: all 0.35s cubic-bezier(.22,1,.36,1);
}
.pill:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.pill--accent { border-color: rgba(var(--accent-rgb),0.35); color: var(--accent); background: var(--accent-glow); font-weight: 600; }
.pill small { opacity: 0.65; font-size: 0.72rem; }

/* --- Nav --- */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  padding: 1rem 0; transition: all 0.4s;
}
.nav--scrolled {
  background: rgba(8,0,14,0.75); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border); padding: 0.7rem 0;
}
[data-theme="light"] .nav--scrolled { background: rgba(248,244,255,0.8); }
.nav__inner { max-width: 1100px; margin: 0 auto; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; }
.nav__logo { font-size: 1.5rem; font-weight: 700; color: var(--heading); text-decoration: none; display: flex; align-items: center; gap: 0.3rem; }
.nav__logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }
.nav__links { display: flex; gap: 2.2rem; }
.nav__links a { color: var(--text-dim); text-decoration: none; font-size: 0.84rem; font-weight: 500; transition: color 0.3s; position: relative; }
.nav__links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--accent); border-radius: 2px; transition: width 0.3s; }
.nav__links a:hover::after, .nav__links a.active::after { width: 100%; }
.nav__links a:hover, .nav__links a.active { color: var(--accent); }
.nav__right { display: flex; align-items: center; gap: 1rem; }
.theme-btn {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--border); background: transparent; cursor: none;
  display: flex; align-items: center; justify-content: center; transition: all 0.3s;
}
.theme-btn:hover { border-color: var(--accent); box-shadow: 0 0 14px var(--accent-glow); }
.theme-btn__dot { width: 12px; height: 12px; border-radius: 50%; background: linear-gradient(135deg, var(--grad-1), var(--grad-3)); }
.theme-picker {
  position: fixed; top: 68px; right: 2rem; display: flex; gap: 0.5rem;
  opacity: 0; visibility: hidden; transform: translateY(-8px); transition: all 0.3s; z-index: 101;
}
.theme-picker--open { opacity: 1; visibility: visible; transform: translateY(0); }
.tswatch { width: 30px; height: 30px; border-radius: 50%; border: 2px solid transparent; cursor: none; transition: transform 0.3s; }
.tswatch:hover { transform: scale(1.25); }
.tswatch--navy { background: linear-gradient(135deg, #2a1aff, #00d4ff); }
.tswatch--dark { background: linear-gradient(135deg, #8000ff, #ff40c0); }
.tswatch--light { background: linear-gradient(135deg, #7c3aed, #ec4899); border-color: rgba(0,0,0,0.08); }
.tswatch--vibrant { background: linear-gradient(135deg, #ff00ff, #00ffc8); }
.nav__burger { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: none; padding: 4px; }
.nav__burger span { display: block; width: 24px; height: 1.5px; background: var(--text); border-radius: 2px; transition: all 0.3s; transform-origin: center; }
.nav__burger--open span:first-child { transform: rotate(45deg) translate(3px, 3px); }
.nav__burger--open span:last-child { transform: rotate(-45deg) translate(3px, -3px); }

.mobile-menu {
  display: none; position: fixed; inset: 0; z-index: 99;
  background: rgba(8,0,14,0.97); backdrop-filter: blur(20px);
  flex-direction: column; align-items: center; justify-content: center; gap: 2.5rem;
}
[data-theme="light"] .mobile-menu { background: rgba(248,244,255,0.97); }
.mobile-menu--open { display: flex; }
.mobile-menu a { color: var(--text); text-decoration: none; font-size: 2rem; font-weight: 600; transition: color 0.3s; }
.mobile-menu a:hover { color: var(--accent); }

/* --- Hero --- */
.hero {
  position: relative; z-index: 2;
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: transparent;
}
.hero__content { position: relative; z-index: 3; text-align: center; padding: 0 2rem; }
.hero__label {
  font-size: 0.82rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1.5rem; opacity: 0;
}
.hero__name {
  font-size: clamp(3rem, 10vw, 7rem); font-weight: 700; line-height: 1;
  margin-bottom: 1.2rem;
  color: var(--heading);
  text-shadow: 0 2px 30px rgba(0,0,0,0.5);
}
.hero__name .split-char {
  display: inline-block; opacity: 0;
  transform: translateY(80px) rotateX(-60deg);
  transform-origin: bottom center;
}
.hero__role { font-size: 1.1rem; color: var(--text-dim); margin-bottom: 2.5rem; opacity: 0; }
.hero__cta { display: flex; gap: 1rem; justify-content: center; }
.hero__cta .btn { opacity: 0; }

/* --- Buttons --- */
.btn {
  display: inline-block; padding: 0.85rem 2.4rem;
  font-family: 'Sora', sans-serif; font-size: 0.85rem; font-weight: 600;
  border-radius: 100px; text-decoration: none;
  transition: all 0.4s cubic-bezier(.22,1,.36,1);
  cursor: none; position: relative;
}
.btn--primary {
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2), var(--grad-3));
  background-size: 200% 200%; animation: gradShift 4s ease-in-out infinite;
  color: #fff; border: none;
}
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px var(--accent-glow); }
@keyframes gradShift { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
.btn--ghost { background: transparent; border: 1px solid rgba(var(--accent-rgb),0.4); color: var(--accent); }
.btn--ghost:hover { background: rgba(var(--accent-rgb),0.08); border-color: var(--accent); }

.hero__scroll {
  position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%); z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: 0.8rem;
  opacity: 0;
}
.hero__scroll-line {
  width: 1px; height: 56px; background: var(--accent); opacity: 0.5;
  transform-origin: top;
  animation: scrollPulse 2.5s ease-in-out infinite;
}
@keyframes scrollPulse {
  0% { transform: scaleY(0); opacity: 0; }
  50% { transform: scaleY(1); opacity: 0.5; }
  100% { transform: scaleY(1); opacity: 0; }
}
.hero__scroll span { font-size: 0.65rem; letter-spacing: 0.35em; text-transform: uppercase; color: var(--text-dim); }

/* --- About --- */
.about__body { max-width: 750px; margin-bottom: 3rem; }
.about__body p { font-size: 1rem; color: var(--text-dim); margin-bottom: 1.2rem; line-height: 1.9; }
.reveal-line { clip-path: inset(0 100% 0 0); }
.reveal-line--visible { clip-path: inset(0 0% 0 0); transition: clip-path 1s cubic-bezier(.22,1,.36,1); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; margin-bottom: 2rem; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
  backdrop-filter: blur(10px); padding: 1.5rem 1rem; text-align: center;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.stat-card:hover { border-color: rgba(var(--accent-rgb),0.25); box-shadow: 0 8px 30px rgba(0,0,0,0.1); }
.stat-card__num {
  font-family: 'Space Mono', monospace; font-size: 2.2rem; font-weight: 700; line-height: 1;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-card__num::after { content: '+'; font-size: 0.5em; }
.stat-card__label { font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.12em; margin-top: 0.4rem; }
.about__lang { display: flex; gap: 0.8rem; flex-wrap: wrap; }

/* --- Experience (Horizontal) --- */
.experience { position: relative; z-index: 2; overflow: hidden; padding: 4rem 0 0; background: var(--bg); }
.experience__header { margin-bottom: 2rem; }
.experience__track {
  display: flex; gap: 2rem;
  padding: 2rem max(2rem, calc(50vw - 550px)) 4rem;
  will-change: transform;
}
.exp-card {
  flex: 0 0 380px; padding: 2rem;
}
.exp-card__date { display: block; font-size: 0.8rem; color: var(--accent); font-weight: 500; margin-bottom: 0.3rem; }
.exp-card__badge {
  display: inline-block; font-size: 0.68rem; padding: 0.15rem 0.6rem;
  border-radius: 100px; background: var(--accent-glow); color: var(--accent);
  font-weight: 600; margin-bottom: 0.5rem;
}
.exp-card h3 { font-size: 1.08rem; font-weight: 600; color: var(--heading); margin-bottom: 0.3rem; }
.exp-card__org { font-size: 0.82rem; color: var(--text-dim); margin-bottom: 0.8rem; }
.exp-card ul { list-style: none; }
.exp-card li { font-size: 0.83rem; color: var(--text-dim); padding: 0.2rem 0 0.2rem 1rem; position: relative; }
.exp-card li::before { content: '→'; position: absolute; left: 0; color: var(--accent); font-size: 0.8rem; }

/* --- Skills --- */
.skills__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.skills__group { padding: 2rem; }
.skills__group h3 { font-size: 1.05rem; font-weight: 600; color: var(--heading); margin-bottom: 1rem; }
.skills__tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* --- Education --- */
.edu__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-bottom: 2rem; }
.edu__card { padding: 1.5rem; text-align: center; }
.edu__icon { font-size: 2rem; margin-bottom: 0.8rem; }
.edu__card h3 { font-size: 1rem; font-weight: 600; color: var(--heading); margin-bottom: 0.3rem; }
.edu__card p { font-size: 0.82rem; color: var(--text-dim); }
.edu__badge { display: inline-block; margin-top: 0.5rem; font-size: 0.72rem; color: var(--text-dim); letter-spacing: 0.12em; text-transform: uppercase; }
.edu__badge--active { color: var(--accent); }
.edu__extras { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.edu__extra { padding: 1.5rem; }
.edu__extra h3 { font-size: 1rem; font-weight: 600; color: var(--heading); margin-bottom: 1rem; }
.edu__pills { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* --- Portfolio --- */
.proj__list { display: flex; flex-direction: column; gap: 1.2rem; }
.proj {
  display: flex; align-items: center; gap: 2rem; padding: 2rem 2.5rem;
  transition: transform 0.5s cubic-bezier(.22,1,.36,1);
}
.proj__num {
  font-family: 'Space Mono', monospace; font-size: 3rem; font-weight: 700;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  opacity: 0.3; flex-shrink: 0;
}
.proj__body h3 { font-size: 1.15rem; font-weight: 600; color: var(--heading); margin-bottom: 0.4rem; }
.proj__body p { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 0.8rem; }
.proj__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }

/* --- Contact --- */
.contact__box { max-width: 600px; margin: 0 auto; padding: 3rem; text-align: center; }
.contact__box p { font-size: 1rem; color: var(--text-dim); margin-bottom: 2rem; }
.contact__links { display: flex; flex-direction: column; align-items: center; gap: 0.8rem; margin-bottom: 2rem; }
.contact__link { text-decoration: none; }

/* --- Footer --- */
.footer { padding: 2.5rem 0; text-align: center; position: relative; z-index: 2; background: var(--bg); }
.footer p { font-size: 0.82rem; color: var(--text-dim); }

/* --- Back to Top --- */
.back-to-top {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 100;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--bg-card); border: 1px solid var(--border); color: var(--accent);
  backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center; cursor: none;
  opacity: 0; visibility: hidden; transition: all 0.4s;
}
.back-to-top--visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--accent); color: #fff; box-shadow: 0 0 24px var(--accent-glow); border-color: var(--accent); }

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .hero__name { font-size: clamp(2.5rem, 12vw, 4rem); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .skills__grid { grid-template-columns: 1fr; }
  .edu__grid { grid-template-columns: 1fr; }
  .edu__extras { grid-template-columns: 1fr; }
  .proj { flex-direction: column; align-items: flex-start; gap: 0.8rem; padding: 1.5rem; }
  .proj__num { font-size: 2rem; }
  .exp-card { flex: 0 0 85vw; }
  .experience__track { padding: 2rem; }
}