/* ━━━━━━━━━━━━━━━━━ RESET & VARS ━━━━━━━━━━━━━━━━━ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg:      #060810;
  --surface: #0b0e18;
  --card:    #0f1320;
  --border:  rgba(255,255,255,0.06);
  --text:    #dde1f0;
  --muted:   #505878;
  --accent:  #00e5b0;
  --accent2: #6c5fff;
  --accent3: #ff5e87;
  --glow:    rgba(0,229,176,0.18);
  --glow2:   rgba(108,95,255,0.15);
}
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  overflow-x: hidden;
}

/* ━━━━━━━━━━━━━━━━━ NOISE GRAIN ━━━━━━━━━━━━━━━━━ */
#grain {
  position: fixed; inset: 0; z-index: 9998;
  pointer-events: none; opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ━━━━━━━━━━━━━━━━━ NAV ━━━━━━━━━━━━━━━━━ */
nav {
  position: fixed; top: 0; width: 100%; z-index: 500;
  padding: 22px 64px;
  display: flex; justify-content: space-between; align-items: center;
  background: rgba(6,8,16,.75);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  transform: translateY(-110%);
  animation: navIn .7s ease .4s forwards;
}
@keyframes navIn { to { transform: translateY(0); } }
.nav-logo {
  font-weight: 800; font-size: 1.05rem; letter-spacing: -.02em;
  color: var(--text); text-decoration: none;
}
.nav-logo em { color: var(--accent); font-style: normal; }
.nav-links { display: flex; gap: 44px; list-style: none; }
.nav-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: .76rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); text-decoration: none;
  transition: color .3s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1px; background: var(--accent);
  transition: width .35s cubic-bezier(.4,0,.2,1);
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--bg); background: var(--accent);
  padding: 10px 24px; border: none; border-radius: 2px;
  text-decoration: none; transition: box-shadow .3s, background .3s;
}
.nav-cta:hover { box-shadow: 0 0 28px var(--glow); background: #00ffca; }

/* ━━━━━━━━━━━━━━━━━ HERO ━━━━━━━━━━━━━━━━━ */
#hero {
  min-height: 100vh;
  display: grid; grid-template-columns: 1fr 520px;
  align-items: center; gap: 60px;
  padding: 130px 64px 100px;
  position: relative; overflow: hidden;
}

/* background grid */
#hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
  opacity: .4;
}

.hero-left { position: relative; z-index: 2; }

.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--accent);
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 28px;
  opacity: 0; transform: translateY(20px);
  animation: up .7s ease .9s forwards;
}
.hero-eyebrow::before { content: ''; width: 28px; height: 1px; background: var(--accent); }

.hero-h1 {
  font-size: clamp(3.2rem, 5.5vw, 5.8rem);
  font-weight: 800; letter-spacing: -.045em; line-height: .95;
  opacity: 0; transform: translateY(30px);
  animation: up .8s ease 1.05s forwards;
}
.hero-h1 .ghost {
  color: transparent;
  -webkit-text-stroke: 2px rgba(255,255,255,.6);
}
.hero-h1 .highlight { color: var(--accent); }

.hero-desc {
  margin-top: 36px; max-width: 460px;
  font-size: 1.12rem; line-height: 1.85; color: var(--muted);
  opacity: 0; transform: translateY(20px);
  animation: up .7s ease 1.2s forwards;
}

.hero-actions {
  margin-top: 52px; display: flex; gap: 14px; flex-wrap: wrap;
  opacity: 0; transform: translateY(20px);
  animation: up .7s ease 1.35s forwards;
}

.btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: .73rem; letter-spacing: .1em; text-transform: uppercase;
  padding: 15px 34px; border-radius: 2px;
  text-decoration: none; transition: all .3s; border: 1px solid transparent;
}
.btn-solid {
  background: var(--accent); color: var(--bg); border-color: var(--accent);
}
.btn-solid:hover { background: transparent; color: var(--accent); box-shadow: 0 0 30px var(--glow); }
.btn-outline {
  background: transparent; color: var(--text); border-color: var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* ── floating code snippet ── */
.hero-code {
  margin-top: 52px; max-width: 420px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .8rem; line-height: 2;
  color: var(--muted);
  background: rgba(255,255,255,.02);
  border: 1px solid var(--border);
  border-radius: 4px; padding: 20px 24px;
  opacity: 0; animation: fadeIn 1s ease 1.6s forwards;
}
.code-kw { color: var(--accent2); }
.code-str { color: var(--accent); }
.code-key { color: var(--accent3); }
.code-val { color: #7ec8e3; }

/* ── 3D Avatar right column ── */
.hero-right {
  display: flex; align-items: center; justify-content: center;
  position: relative; z-index: 2;
  opacity: 0; animation: fadeIn 1.2s ease 1.1s forwards;
}

.avatar-wrap {
  position: relative; width: 400px; height: 400px;
}
#avatar-img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 50%; display: block;
}
.av-ring {
  position: absolute; border-radius: 50%; pointer-events: none;
}
.av-ring1 {
  inset: -22px;
  border: 1px solid rgba(0,229,176,.2);
  animation: spin 24s linear infinite;
}
.av-ring1::before {
  content: ''; position: absolute;
  top: -4px; left: 50%; transform: translateX(-50%);
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 14px var(--accent);
}
.av-ring2 {
  inset: -48px;
  border: 1px dashed rgba(108,95,255,.2);
  animation: spin 44s linear infinite reverse;
}
.av-ring2::before {
  content: ''; position: absolute;
  right: -4px; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent2); box-shadow: 0 0 10px var(--accent2);
}
.av-glow {
  position: absolute; inset: -10px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,176,.1) 0%, transparent 65%);
  animation: pulse 4s ease-in-out infinite;
}

/* floating tags around avatar */
.av-tag {
  position: absolute;
  font-family: 'JetBrains Mono', monospace;
  font-size: .65rem; letter-spacing: .08em;
  color: var(--accent); background: rgba(0,229,176,.07);
  border: 1px solid rgba(0,229,176,.2);
  padding: 6px 12px; border-radius: 2px;
  animation: float 4s ease-in-out infinite;
  white-space: nowrap;
}
.av-tag:nth-child(1) { top: 10%; left: -30%; animation-delay: 0s; }
.av-tag:nth-child(2) { top: 30%; right: -30%; animation-delay: .8s; color: var(--accent2); border-color: rgba(108,95,255,.3); background: rgba(108,95,255,.07); }
.av-tag:nth-child(3) { bottom: 20%; left: -28%; animation-delay: 1.6s; color: var(--accent3); border-color: rgba(255,94,135,.3); background: rgba(255,94,135,.07); }

@keyframes float { 0%,100% { transform: translateY(0px); } 50% { transform: translateY(-10px); } }
@keyframes pulse { 0%,100% { opacity: .5; transform: scale(1); } 50% { opacity: 1; transform: scale(1.06); } }
@keyframes spin { to { transform: rotate(360deg); } }

/* scroll cue */
.scroll-cue {
  position: absolute; bottom: 48px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  opacity: 0; animation: fadeIn 1s ease 2.2s forwards;
}
.scroll-cue-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: .62rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted);
}
.scroll-cue-line {
  width: 1px; height: 52px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: lineGrow 2.2s ease-in-out infinite;
}
@keyframes lineGrow {
  0% { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ━━━━━━━━━━━━━━━━━ MARQUEE ━━━━━━━━━━━━━━━━━ */
.marquee-section {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 18px 0;
}
.marquee-track {
  display: flex; gap: 0; white-space: nowrap;
  animation: marquee 22s linear infinite;
}
.marquee-item {
  display: flex; align-items: center; gap: 28px;
  padding: 0 28px; flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted);
}
.marquee-dot { color: var(--accent); font-size: .9rem; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ━━━━━━━━━━━━━━━━━ SHARED SECTION STYLES ━━━━━━━━━━━━━━━━━ */
.section-pad { padding: 140px 64px; }
.section-pad-dark { padding: 140px 64px; background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.sec-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--accent); display: flex; align-items: center; gap: 14px;
  margin-bottom: 60px;
}
.sec-label::after { content: ''; width: 48px; height: 1px; background: var(--accent); }

.sec-title {
  font-size: clamp(2.4rem, 4.2vw, 4rem);
  font-weight: 800; letter-spacing: -.04em; line-height: 1.02;
}
.sec-title .ghost {
  color: transparent; -webkit-text-stroke: 2px rgba(255,255,255,.55);
}

/* reveal */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity .85s cubic-bezier(.16,1,.3,1), transform .85s cubic-bezier(.16,1,.3,1);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ━━━━━━━━━━━━━━━━━ ABOUT ━━━━━━━━━━━━━━━━━ */
#about .inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center;
}
.about-text p {
  color: var(--muted); line-height: 1.9; font-size: 1.08rem; margin-bottom: 20px;
  text-align: justify;
}
.about-text p strong { color: var(--text); font-weight: 600; }
.about-text p:last-child { margin-bottom: 0; }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.stat {
  background: var(--card); border: 1px solid var(--border);
  padding: 44px 36px; position: relative; overflow: hidden;
  transition: border-color .4s;
}
.stat::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0); transform-origin: left; transition: transform .5s;
}
.stat:hover { border-color: rgba(0,229,176,.3); }
.stat:hover::before { transform: scaleX(1); }
.stat-n { display: block; font-size: 3.2rem; font-weight: 800; letter-spacing: -.04em; color: var(--accent); line-height: 1; }
.stat-l { font-family: 'JetBrains Mono', monospace; font-size: .82rem; color: var(--muted); margin-top: 10px; display: block; }

/* ━━━━━━━━━━━━━━━━━ SERVICES ━━━━━━━━━━━━━━━━━ */
.services-grid {
  display: grid; grid-template-columns: repeat(3,1fr);
  gap: 1px; background: var(--border);
  border: 1px solid var(--border);
  margin-top: 64px;
}
.svc {
  background: var(--surface); padding: 56px 44px;
  position: relative; overflow: hidden;
  transition: background .4s;
}
.svc:hover { background: rgba(0,229,176,.025); }
.svc-icon { font-size: 1.8rem; margin-bottom: 28px; display: block; }
.svc-title { font-size: 1.45rem; font-weight: 700; letter-spacing: -.02em; margin-bottom: 16px; }
.svc-desc { color: var(--muted); line-height: 1.8; font-size: 1rem; margin-bottom: 28px; }
.svc-border {
  position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0); transform-origin: left; transition: transform .6s cubic-bezier(.16,1,.3,1);
}
.svc:hover .svc-border { transform: scaleX(1); }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: 'JetBrains Mono', monospace; font-size: .74rem;
  padding: 5px 12px; border-radius: 2px;
  background: rgba(255,255,255,.03); border: 1px solid var(--border);
  color: var(--muted); transition: color .3s, border-color .3s;
}
.svc:hover .tag { color: var(--text); border-color: rgba(0,229,176,.2); }

/* ━━━━━━━━━━━━━━━━━ SKILLS ━━━━━━━━━━━━━━━━━ */
#skills-intro { max-width: 520px; margin-bottom: 60px; }
#skills-intro p { color: var(--muted); line-height: 1.75; margin-top: 24px; }
.skills-grid { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.skill-card {
  flex-grow: 1; text-align: center;
  font-family: 'JetBrains Mono', monospace; font-size: 0.95rem;
  color: var(--text); background: var(--surface);
  border: 1px solid var(--border);
  padding: 16px 28px; border-radius: 4px;
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s, border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.skill-card.in { opacity: 1; transform: translateY(0); }
.skill-card:hover {
  border-color: var(--accent); background: rgba(0,229,176,.03);
  transform: translateY(-4px); box-shadow: 0 12px 24px rgba(0,0,0,0.2);
}

/* ━━━━━━━━━━━━━━━━━ TIMELINE ━━━━━━━━━━━━━━━━━ */
.timeline { position: relative; margin-top: 64px; }
.timeline::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 1px; background: var(--border);
}
.tl-item {
  position: relative; padding: 0 0 60px 56px;
  opacity: 0; transform: translateX(-24px);
  transition: opacity .7s, transform .7s;
}
.tl-item.in { opacity: 1; transform: translateX(0); }
.tl-item::before {
  content: ''; position: absolute; left: -4px; top: 5px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
  box-shadow: 0 0 14px var(--glow);
}
.tl-item::after {
  content: ''; position: absolute; left: 0; top: 8px;
  width: 40px; height: 1px; background: var(--border);
}
.tl-year {
  font-family: 'JetBrains Mono', monospace; font-size: .78rem;
  letter-spacing: .12em; color: var(--accent); margin-bottom: 10px;
}
.tl-title { font-size: 1.22rem; font-weight: 700; margin-bottom: 8px; }
.tl-school { font-size: .96rem; color: var(--muted); }

/* ━━━━━━━━━━━━━━━━━ SPLIT LAYOUT (EDUCATION/COURSES) ━━━━━━━━━━━━━━━━━ */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
@media (max-width: 900px) {
  .split-layout { grid-template-columns: 1fr; gap: 60px; }
}

/* ━━━━━━━━━━━━━━━━━ PROJECTS ━━━━━━━━━━━━━━━━━ */
.projects-grid {
  display: grid; grid-template-columns: repeat(3,1fr);
  gap: 1px; background: var(--border);
  border: 1px solid var(--border); margin-top: 64px;
}
.proj {
  background: var(--bg); padding: 44px 38px;
  position: relative; overflow: hidden;
  opacity: 0; transform: translateY(32px);
  transition: opacity .7s, transform .7s, background .4s;
}
.proj.in { opacity: 1; transform: translateY(0); }
.proj:hover { background: var(--card); }
.proj:hover .proj-arrow { transform: translate(5px,-5px); }
.proj-num {
  font-family: 'JetBrains Mono', monospace; font-size: .67rem;
  color: var(--muted); letter-spacing: .12em; margin-bottom: 28px;
}
.proj-title { font-size: 1.35rem; font-weight: 700; letter-spacing: -.02em; margin-bottom: 12px; }
.proj-desc { font-size: .97rem; color: var(--muted); line-height: 1.75; margin-bottom: 28px; }
.proj-footer { display: flex; justify-content: space-between; align-items: flex-end; }
.proj-arrow { font-size: 1.3rem; color: var(--accent); transition: transform .35s cubic-bezier(.4,0,.2,1); }
.proj-line {
  position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  transform: scaleX(0); transition: transform .6s;
}
.proj:hover .proj-line { transform: scaleX(1); }

/* ━━━━━━━━━━━━━━━━━ CONTACT ━━━━━━━━━━━━━━━━━ */
#contact {
  padding: 160px 64px;
  text-align: center;
  background: var(--surface); border-top: 1px solid var(--border);
  position: relative; overflow: hidden;
}
#contact::before {
  content: '';
  position: absolute; bottom: -200px; left: 50%; transform: translateX(-50%);
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,176,.06) 0%, transparent 70%);
  pointer-events: none;
}
.contact-big {
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 800; letter-spacing: -.055em; line-height: .9;
  margin-bottom: 40px;
}
.contact-big .ghost { color: transparent; -webkit-text-stroke: 2px rgba(255,255,255,.55); }
.contact-sub { color: var(--muted); max-width: 440px; margin: 0 auto; line-height: 1.85; font-size: 1.05rem; }
.contact-links { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-top: 60px; }
.contact-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: .82rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); text-decoration: none;
  padding: 16px 36px; border: 1px solid var(--border); border-radius: 2px;
  transition: color .3s, border-color .3s, box-shadow .3s;
}
.contact-link:hover { color: var(--accent); border-color: var(--accent); box-shadow: 0 0 24px var(--glow); }

/* ━━━━━━━━━━━━━━━━━ FOOTER ━━━━━━━━━━━━━━━━━ */
footer {
  padding: 36px 64px;
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--border); background: var(--bg);
}
.foot-l { font-family: 'JetBrains Mono', monospace; font-size: .78rem; color: var(--muted); }
.foot-l em { color: var(--accent); font-style: normal; }
.foot-r { font-family: 'JetBrains Mono', monospace; font-size: .72rem; color: var(--muted); letter-spacing: .05em; }

/* ━━━━━━━━━━━━━━━━━ KEYFRAMES ━━━━━━━━━━━━━━━━━ */
@keyframes up { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ━━━━━━━━━━━━━━━━━ RESPONSIVE ━━━━━━━━━━━━━━━━━ */
@media (max-width: 1100px) {
  #hero { grid-template-columns: 1fr; padding: 130px 32px 100px; }
  .hero-right { order: -1; }
  .avatar-wrap { width: 280px; height: 280px; }
  .av-tag { display: none; }
}
@media (max-width: 900px) {
  nav { padding: 20px 28px; }
  .nav-links, .nav-cta { display: none; }
  .hero-actions { flex-wrap: nowrap; gap: 10px; }
  .hero-actions .btn { flex: 1; text-align: center; padding: 15px 10px; font-size: .65rem; }
  .section-pad, .section-pad-dark { padding: 88px 28px; }
  #about .inner { grid-template-columns: 1fr; gap: 60px; }
  .services-grid, .projects-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  footer { flex-direction: column; gap: 10px; padding: 28px; text-align: center; }
  #contact { padding: 100px 28px; }
}