/* ===== Reset & tokens ===== */
:root {
  --bg: #0a0a0a;
  --bg-soft: #111111;
  --bg-card: #141414;
  --border: #242424;
  --border-hover: #3a3a3a;
  --text: #ededed;
  --text-dim: #a1a1a1;
  --text-faint: #6b6b6b;
  --accent: #f97316;
  --accent-soft: #fb923c;
  --accent-glow: rgba(249, 115, 22, 0.35);
  --radius: 14px;
  --max: 1080px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; overflow-x: hidden; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

code, .mono { font-family: 'Fira Code', monospace; }

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

::selection { background: var(--accent); color: #0a0a0a; }

/* ===== Layout helpers ===== */
section { padding: 7rem 1.5rem; position: relative; }
.wrap { max-width: var(--max); margin: 0 auto; }

.eyebrow {
  font-family: 'Fira Code', monospace;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--accent); }

h2.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
}

/* ===== Reveal on scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ===== Nav ===== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  backdrop-filter: blur(10px);
  background: rgba(10, 10, 10, 0.55);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
nav.scrolled { border-bottom-color: var(--border); background: rgba(10, 10, 10, 0.8); }
.brand {
  font-family: 'Fira Code', monospace;
  font-weight: 600;
  font-size: 1rem;
  display: flex; align-items: center; gap: 0.45rem;
}
.brand .dot { color: var(--accent); }
.nav-links { display: flex; gap: 1.6rem; font-size: 0.9rem; }
.nav-links a { color: var(--text-dim); transition: color 0.2s ease; }
.nav-links a:hover { color: var(--accent); }
@media (max-width: 640px) { .nav-links { display: none; } }

/* nav right cluster + language switch */
.nav-right { display: flex; align-items: center; }
.lang-switch {
  font-family: 'Fira Code', monospace;
  font-size: 0.85rem;
  display: flex; align-items: center; gap: 0.45rem;
  margin-left: 1.4rem;
}
.lang-switch button {
  background: none; border: none; cursor: pointer; padding: 0;
  font-family: inherit; font-size: inherit;
  color: var(--text-faint);
  transition: color 0.2s ease;
}
.lang-switch button:hover { color: var(--text-dim); }
.lang-switch button.active { color: var(--accent); font-weight: 600; }
.lang-switch .sep { color: var(--border-hover); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-top: 6rem;
  overflow: hidden;
}
.hero .wrap { width: 100%; }

/* grid + dots background */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(249,115,22,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(249,115,22,0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 80% 70% at 30% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 30% 30%, #000 40%, transparent 100%);
}
.hero-glow {
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-glow), transparent 65%);
  top: -10%; left: -5%;
  filter: blur(40px);
  opacity: 0.5;
  z-index: 0;
  animation: drift 14s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes drift {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(120px, 60px) scale(1.15); }
}
#dots { position: absolute; inset: 0; z-index: 0; pointer-events: none; }

.hero-content { position: relative; z-index: 2; }
.hero .tag {
  font-family: 'Fira Code', monospace;
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.1s forwards;
}
.hero h1 {
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.25s forwards;
}
.hero h1 .wave { display: inline-block; animation: wave 2.5s ease-in-out infinite; transform-origin: 70% 70%; }
@keyframes wave {
  0%,60%,100% { transform: rotate(0deg); }
  10% { transform: rotate(14deg); }
  20% { transform: rotate(-8deg); }
  30% { transform: rotate(14deg); }
  40% { transform: rotate(-4deg); }
  50% { transform: rotate(10deg); }
}
.accent { color: var(--accent); }

.typewrap {
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  color: var(--text-dim);
  font-weight: 500;
  margin-bottom: 2.5rem;
  min-height: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.4s forwards;
}
.typewrap .prompt { color: var(--accent); font-family: 'Fira Code', monospace; }
#typed { color: var(--text); }
.cursor {
  display: inline-block;
  width: 9px; height: 1.15em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-cta {
  display: flex; gap: 1rem; flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.55s forwards;
}
.btn {
  padding: 0.7rem 1.4rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  border: 1px solid var(--border);
}
.btn-primary { background: var(--accent); color: #0a0a0a; border-color: var(--accent); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -10px var(--accent-glow); }
.btn-ghost { color: var(--text); }
.btn-ghost:hover { border-color: var(--border-hover); transform: translateY(-2px); }

@keyframes fadeUp { to { opacity: 1; transform: none; } from { opacity: 0; transform: translateY(20px); } }

/* scroll arrow */
.scroll-arrow {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--text-faint);
  font-size: 0.75rem;
  font-family: 'Fira Code', monospace;
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  animation: bob 2s ease-in-out infinite;
}
.scroll-arrow svg { stroke: var(--accent); }
@keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
@media (max-width: 800px) { .about-grid { grid-template-columns: 1fr; } }
.about-text p { color: var(--text-dim); font-size: 1.08rem; margin-bottom: 1rem; max-width: 52ch; }
.about-text strong { color: var(--text); font-weight: 600; }

.stack-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.stack-card h3 {
  font-family: 'Fira Code', monospace;
  font-size: 0.8rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.1rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.stack-card h3::before { content: "~/"; color: var(--accent); }
.stack-list { display: flex; flex-direction: column; gap: 0.7rem; }
.stack-item {
  display: flex; align-items: center; gap: 0.7rem;
  font-size: 0.95rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--border);
}
.stack-item:last-child { border-bottom: none; padding-bottom: 0; }
.stack-item .ico { color: var(--accent); font-family: 'Fira Code', monospace; font-size: 0.9rem; }

/* ===== Education timeline ===== */
.timeline {
  position: relative;
  max-width: 880px;
  display: flex;
  gap: 1.5rem;
  padding-top: 2.8rem;
}
/* the past → present rail */
.timeline::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: 1.1rem;
  height: 2px;
  background: linear-gradient(90deg, rgba(249,115,22,0.18), rgba(249,115,22,0.55), var(--accent));
}
.t-cap {
  position: absolute;
  top: 1.1rem;
  transform: translateY(-50%);
  font-family: 'Fira Code', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  background: var(--bg);
  padding: 0 0.55rem;
  z-index: 2;
}
.t-cap.start { left: 0; }
.t-cap.end { right: 0; color: var(--accent); }
.t-item { flex: 1 1 0; min-width: 0; position: relative; display: flex; }
.t-item > .card { flex: 1 1 auto; }
.edu-inst {
  font-family: 'Fira Code', monospace;
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: -0.25rem;
  margin-bottom: 0.7rem;
}
.t-node {
  position: absolute;
  /* anchor onto the rail: rail-top (1.1rem) − padding-top (2.8rem) − half node (7px) */
  top: calc(1.1rem - 2.8rem - 7px);
  left: 50%;
  transform: translateX(-50%);
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg), 0 0 0 6px rgba(249,115,22,0.25), 0 0 14px var(--accent-glow);
  z-index: 1;
}
.t-node.present { animation: pulse 2.2s ease-in-out infinite; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--bg), 0 0 0 6px rgba(249,115,22,0.25), 0 0 14px var(--accent-glow); }
  50%      { box-shadow: 0 0 0 4px var(--bg), 0 0 0 10px rgba(249,115,22,0.10), 0 0 22px var(--accent-glow); }
}
/* vertical timeline on small screens */
@media (max-width: 640px) {
  .timeline {
    flex-direction: column;
    padding-top: 0;
    padding-left: 1.9rem;
    gap: 1.5rem;
  }
  .timeline::before {
    left: 6px; right: auto;
    top: 1.4rem; bottom: 1.4rem;
    width: 2px; height: auto;
    background: linear-gradient(180deg, rgba(249,115,22,0.18), rgba(249,115,22,0.55), var(--accent));
  }
  .t-cap { top: auto; transform: none; left: -0.2rem; right: auto; }
  .t-cap.start { top: 0; }
  .t-cap.end { bottom: 0; }
  /* line sits at left:6px; t-item starts at padding-left:1.9rem → node left = -1.9rem centers it on the rail */
  .t-node { top: 1.5rem; left: -1.9rem; transform: none; }
}

/* ===== Projects ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
@media (max-width: 700px) { .cards { grid-template-columns: 1fr; } }
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.card::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(249,115,22,0.08), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: 0 18px 40px -22px var(--accent-glow);
}
.card:hover::before { opacity: 1; }
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.6rem; }
.card h3 { font-size: 1.2rem; font-weight: 700; }
.card .emoji { font-size: 1.3rem; }
.card p { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 1.1rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.pill {
  font-family: 'Fira Code', monospace;
  font-size: 0.72rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: rgba(249,115,22,0.08);
  border: 1px solid rgba(249,115,22,0.25);
  color: var(--accent-soft);
}

/* ===== Skills (terminal block) ===== */
.skills-term {
  max-width: 720px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem 1.5rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.95rem;
  overflow-x: auto;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.skills-term:hover {
  border-color: var(--border-hover);
  box-shadow: 0 18px 40px -26px var(--accent-glow);
}
/* fake window chrome */
.term-bar { display: flex; gap: 0.5rem; margin-bottom: 1.1rem; }
.term-bar span {
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--border-hover);
}
.term-bar span:last-child { background: rgba(249,115,22,0.55); }
.term-prompt { color: var(--text-faint); margin-bottom: 1.1rem; }
.term-prompt .term-path { color: var(--accent-soft); }
.term-prompt .term-dollar { color: var(--accent); }
.term-body { display: flex; flex-direction: column; gap: 0.75rem; }
.term-line { display: flex; gap: 1rem; align-items: baseline; flex-wrap: wrap; }
.term-cat { color: var(--accent); flex: 0 0 120px; }
.term-vals { color: var(--text-dim); }
@media (max-width: 480px) {
  .term-cat { flex-basis: 100%; }
  .term-line { gap: 0.2rem; }
}

/* ===== Contact ===== */
.contact { text-align: center; }
.contact .wrap { max-width: 620px; }
.contact h2.section-title { margin-bottom: 1rem; }
.contact p.lead { color: var(--text-dim); font-size: 1.1rem; margin-bottom: 2.2rem; }
.contact-links { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.contact-link {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.8rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  font-weight: 500;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.contact-link:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 12px 30px -16px var(--accent-glow); }
.contact-link svg { width: 20px; height: 20px; fill: var(--accent); }

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.88rem;
}
footer .mono { color: var(--text-dim); }
footer .heart { color: var(--accent); }
footer .row { margin-top: 0.4rem; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}