/* ============ Tokens ============ */
:root {
  /* dark (default) */
  --bg: #07070a;
  --bg-2: #0d0d12;
  --surface: #111118;
  --surface-2: #16161f;
  --border: rgba(255,255,255,0.08);
  --border-2: rgba(255,255,255,0.14);
  --ink: #f5f5f7;
  --ink-2: #b8b8c4;
  --ink-3: #6e6e7e;
  --ink-4: #3a3a48;
  --accent: #6ee04a;
  --accent-2: #4ab82e;
  --accent-soft: rgba(110,224,74,0.14);
  --accent-ink: #07070a;

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;

  --font-display: "Geist", system-ui, -apple-system, sans-serif;
  --font-sans: "Geist", system-ui, -apple-system, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, monospace;

  --ease: cubic-bezier(.22,.7,.2,1);
}
html[data-theme="light"] {
  --bg: #fafaf7;
  --bg-2: #f3f3ee;
  --surface: #ffffff;
  --surface-2: #f7f7f3;
  --border: rgba(0,0,0,0.08);
  --border-2: rgba(0,0,0,0.14);
  --ink: #0a0a0d;
  --ink-2: #4a4a55;
  --ink-3: #8a8a96;
  --ink-4: #c8c8d0;
  --accent: #3d6b1f;
  --accent-2: #2a4d12;
  --accent-soft: rgba(61,107,31,0.10);
  --accent-ink: #ffffff;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}
body { overflow-x: hidden; min-height: 100vh; transition: background .4s var(--ease), color .4s var(--ease); }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }
::selection { background: var(--accent); color: var(--accent-ink); }

/* Focus indicators */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.app { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .app { padding: 0 20px; } }

.section { padding: 140px 0; position: relative; }
@media (max-width: 720px) { .section { padding: 96px 0; } }

/* ============ Nav ============ */
.nav {
  position: fixed; top: 14px; left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  width: calc(100% - 28px); max-width: 980px;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 9px 9px 9px 22px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  transition: background .3s var(--ease), border-color .3s var(--ease), transform .35s var(--ease);
}
.nav.nav-hidden { transform: translateX(-50%) translateY(-120%); }
.nav-links a.active { color: var(--ink); background: var(--surface-2); }
.nav-logo {
  font-family: var(--font-display);
  font-size: 18px; line-height: 1;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.nav-logo .dot { color: var(--accent); }
.nav-links { display: flex; gap: 2px; font-size: 13.5px; font-weight: 500; }
.nav-links a {
  padding: 8px 12px; border-radius: 999px;
  color: var(--ink-2);
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--ink); background: var(--surface-2); }
@media (max-width: 760px) { .nav-links { display: none; } }
.nav-right { display: flex; align-items: center; gap: 6px; }
.nav-cta {
  padding: 9px 16px; border-radius: 999px;
  background: var(--ink); color: var(--bg);
  font-size: 13px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
  transition: transform .15s, opacity .15s;
}
.nav-cta:hover { transform: translateY(-1px); opacity: .9; }
.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 999px;
  display: grid; place-items: center;
  color: var(--ink-2);
  transition: background .15s, color .15s;
}
.theme-toggle:hover { background: var(--surface-2); color: var(--ink); }

/* Hamburger button — only visible on mobile */
.hamburger {
  display: none; width: 36px; height: 36px;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  border-radius: 999px;
  transition: background .15s;
}
.hamburger:hover { background: var(--surface-2); }
.hamburger-line {
  display: block; width: 18px; height: 2px;
  background: var(--ink-2); border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s;
}
.hamburger-line.open:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger-line.open:nth-child(2) { opacity: 0; }
.hamburger-line.open:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 760px) { .hamburger { display: flex; } .nav-cta { display: none; } }

/* Mobile menu overlay */
.mobile-menu {
  position: fixed; inset: 0; z-index: 55;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: grid; place-items: center;
  animation: fadeIn .2s var(--ease);
}
.mobile-menu-inner {
  display: flex; flex-direction: column; gap: 8px;
  text-align: center; padding: 24px;
}
.mobile-link {
  font-family: var(--font-display);
  font-size: 28px; font-weight: 600;
  color: var(--ink-2); padding: 12px 24px;
  border-radius: var(--r-md);
  transition: color .15s, background .15s;
  letter-spacing: -0.02em;
}
.mobile-link:hover, .mobile-link.active { color: var(--ink); background: var(--surface); }

/* ============ HERO ============ */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  position: relative;
  padding-top: 120px;
  padding-bottom: 80px;
  overflow: hidden;
}
.hero-canvas-wrap {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.kinetic {
  position: absolute; inset: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  opacity: 0.22;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 86%, transparent 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 86%, transparent 100%);
}
.hero-scrim {
  position: absolute;
  top: 0; bottom: 0; left: 0;
  width: 60%;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at 20% 50%, var(--bg) 0%, color-mix(in srgb, var(--bg) 80%, transparent) 45%, transparent 75%);
}
@media (max-width: 900px) {
  .kinetic { opacity: 0.12; }
  .hero-scrim { width: 100%; background: radial-gradient(ellipse at 50% 50%, var(--bg) 0%, color-mix(in srgb, var(--bg) 70%, transparent) 50%, transparent 80%); }
}
.kcol {
  display: flex;
  flex-direction: column;
  gap: 28px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 3.6vw, 56px);
  line-height: 1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--ink-4);
  white-space: nowrap;
  will-change: transform;
}
.kcol-up { animation: kscroll-up linear infinite; }
.kcol-down { animation: kscroll-down linear infinite; }
.kword { display: block; padding: 0 8px; }
.kword-accent { color: var(--accent); opacity: 0.85; }
.kword-outline {
  color: transparent;
  -webkit-text-stroke: 1px var(--ink-3);
}
@keyframes kscroll-up {
  0% { transform: translateY(0); }
  100% { transform: translateY(-33.333%); }
}
@keyframes kscroll-down {
  0% { transform: translateY(-33.333%); }
  100% { transform: translateY(0); }
}

.hero-content { position: relative; z-index: 2; max-width: 920px; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 14px;
  border: 1px solid var(--border-2);
  border-radius: 100px;
  background: var(--surface);
  font-size: 13px; color: var(--ink-2);
  letter-spacing: 0.01em;
  margin-bottom: 28px;
}
.hero-eyebrow .pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(110, 224, 74, 0.6); }
  50% { box-shadow: 0 0 0 7px rgba(110, 224, 74, 0); }
}

.hero-name {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 10px;
  font-weight: 500;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(56px, 9vw, 132px);
  line-height: 0.95;
  letter-spacing: -0.045em;
  margin: 0;
  font-weight: 600;
  color: var(--ink);
}
.h1-line { display: block; }
.h1-rot { color: var(--accent); }

.rot-wrap {
  position: relative;
  display: inline-block;
  vertical-align: top;
  height: 1em;
  min-width: 8ch;
}
.rot-word {
  position: absolute; left: 0; top: 0;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(0.6em);
  transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.rot-word.rot-active { opacity: 1; transform: translateY(0); }
.rot-word.rot-prev { opacity: 0; transform: translateY(-0.6em); }

.hero-tagline {
  margin-top: 32px; max-width: 580px;
  font-size: 18px; line-height: 1.55; color: var(--ink-2);
}

.hero-stats {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--border-2);
  border-bottom: 1px solid var(--border-2);
  max-width: 720px;
}
.hstat {
  padding: 20px 18px 18px 0;
  border-right: 1px solid var(--border-2);
}
.hstat:last-child { border-right: none; padding-right: 0; }
.hstat-n {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
}
.hstat-suf { color: var(--accent); }
.hstat-l {
  margin-top: 8px;
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px;
  font-size: 15px; font-weight: 500;
  transition: transform .15s var(--ease), background .15s, color .15s, border-color .15s;
  border: 1px solid transparent;
}
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { color: var(--ink); border-color: var(--border-2); }
.btn-ghost:hover { background: var(--surface); }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(4px); }

.hero-ctas { margin-top: 36px; display: flex; gap: 12px; flex-wrap: wrap; }

.hero-scroll {
  position: absolute; bottom: 32px; left: 0; right: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px; color: var(--ink-3);
  letter-spacing: 0.12em; text-transform: uppercase;
}
.hero-scroll .line {
  display: block; width: 1px; height: 28px;
  background: linear-gradient(180deg, var(--ink-3), transparent);
  margin: 8px auto 0;
  animation: scrollLine 2.2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%,100% { transform: scaleY(.4); transform-origin: top; opacity: .5; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ============ Section heading ============ */
.sec-h {
  display: flex; align-items: baseline; gap: 14px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.sec-h .num {
  font-family: var(--font-mono);
  font-size: 12px; color: var(--ink-3);
  letter-spacing: 0.08em; text-transform: uppercase;
}
.sec-h h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.sec-h h2 em { font-style: normal; font-weight: 400; color: var(--ink-3); }
.sec-h .lede {
  margin-left: auto; max-width: 360px;
  font-size: 15px; line-height: 1.55; color: var(--ink-2);
}

/* ============ About ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 880px) { .about-grid { grid-template-columns: 1fr; gap: 32px; } }
.about p {
  font-size: 19px; line-height: 1.65; color: var(--ink);
  margin: 0 0 18px;
}
.about p:nth-child(n+2) { color: var(--ink-2); }
.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  position: sticky; top: 100px;
}
.about-card .row {
  display: flex; justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.about-card .row:last-child { border-bottom: 0; }
.about-card .lbl {
  color: var(--ink-3);
  font-family: var(--font-mono); font-size: 12px;
}
.about-card .val { color: var(--ink); font-weight: 500; }

/* About photo */
.about-photo {
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 8px;
}
.about-photo-frame {
  width: 280px; height: 340px;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 2px solid var(--border-2);
  background: var(--surface);
}
.about-photo-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}
@media (max-width: 880px) {
  .about-photo { justify-content: center; position: static; order: -1; margin-bottom: 24px; }
  .about-photo-frame { width: 200px; height: 240px; }
}

/* Fix dark mode logo visibility */
html[data-theme="dark"] .logo img { filter: brightness(1.1); }
html[data-theme="dark"] .logo img[src*="github"],
html[data-theme="dark"] .logo img[src*="openai"],
html[data-theme="dark"] .logo img[src*="socketio"] {
  filter: invert(1) brightness(2);
}

/* ============ Experience ============ */
.exp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
}
@media (max-width: 760px) { .exp-card { grid-template-columns: 1fr; gap: 20px; } }
.exp-head { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.exp-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.exp-head h3 em { font-style: normal; font-weight: 400; color: var(--ink-3); }
.exp-head .sub { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-3); }
.exp-head .meta { font-family: var(--font-mono); font-size: 12px; color: var(--ink-2); }
.exp-card p { margin: 0 0 14px; font-size: 14.5px; line-height: 1.6; color: var(--ink-2); }
.exp-card ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 8px; }
.exp-card li { font-size: 14px; color: var(--ink-2); display: flex; gap: 10px; }
.exp-card li::before { content: "\2192"; color: var(--accent); flex-shrink: 0; }
.exp-side {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 18px;
  display: flex; flex-direction: column; gap: 12px;
  font-size: 13px;
}
.exp-side .label {
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-3);
}
.exp-side .stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.exp-side .chip {
  font-family: var(--font-mono); font-size: 11px;
  padding: 4px 9px; border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink-2);
}
.exp-side .stat-row { display: flex; justify-content: space-between; padding: 8px 0; border-top: 1px solid var(--border); }
.exp-side .stat-row:first-of-type { border-top: 0; padding-top: 0; }
.exp-side .lbl { color: var(--ink-3); font-family: var(--font-mono); font-size: 11.5px; }
.exp-side .val { color: var(--ink); font-weight: 500; font-size: 13px; }

/* ============ Stack section ============ */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.stack-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 22px;
  transition: transform .2s var(--ease), border-color .2s;
}
.stack-card:hover { transform: translateY(-2px); border-color: var(--border-2); }
.stack-card h4 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.stack-card .stack-row {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.stack-card .item {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 11px 6px 8px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--ink);
  border-radius: 8px;
  transition: border-color .15s, transform .15s;
}
.stack-card .item:hover { border-color: var(--border-2); transform: translateY(-1px); }
.stack-card .item .logo {
  width: 16px; height: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.stack-card .item .logo svg { width: 100%; height: 100%; }

/* ============ Projects (horizontal cards) ============ */
.proj-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 980px) { .proj-track { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .proj-track { grid-template-columns: 1fr; } }

.proj-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .25s var(--ease), border-color .2s, background .2s;
}
.proj-card:hover { transform: translateY(-3px); border-color: var(--border-2); }

.proj-preview {
  position: relative;
  aspect-ratio: 16 / 10;
  background: #0d1117;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.proj-preview img {
  width: 100%; height: 100%;
  object-fit: contain;
  display: block;
  padding: 8px;
}
.proj-preview .proj-tag { z-index: 2; position: absolute; }
.proj-preview-art {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-family: var(--font-mono);
  color: var(--ink-3);
}
.proj-preview-art svg { width: 100%; height: 100%; }
.proj-tag {
  position: absolute; top: 14px; left: 14px;
  font-family: var(--font-mono); font-size: 10.5px;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 4px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  color: var(--ink-2);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.proj-tag-soon {
  position: absolute; top: 14px; right: 14px;
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.06em;
  padding: 4px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  backdrop-filter: blur(8px);
  opacity: 0.8;
}

.proj-org {
  margin-bottom: 24px;
}
.proj-org-link {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: var(--font-mono); font-size: 14px; font-weight: 600;
  color: var(--ink);
  transition: transform .15s var(--ease), border-color .15s, background .15s;
}
.proj-org-link:hover { transform: translateY(-2px); border-color: var(--accent); background: var(--surface-2); }
.proj-org-badge {
  font-size: 10px; font-weight: 500;
  padding: 3px 8px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
  letter-spacing: 0.04em; text-transform: uppercase;
}
.proj-tag-inline {
  font-family: var(--font-mono); font-size: 10.5px;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-3);
  margin-bottom: -4px;
}
.proj-body { padding: 22px; display: flex; flex-direction: column; flex: 1; gap: 14px; }
.proj-body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px; font-weight: 600;
  letter-spacing: -0.02em; line-height: 1.25;
  color: var(--ink);
}
.proj-body p {
  margin: 0;
  font-size: 14px; line-height: 1.55; color: var(--ink-2);
  flex: 1;
}
.proj-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.proj-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 9px; border-radius: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--ink-2);
}
.proj-actions {
  display: flex; gap: 8px;
  margin-top: 4px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.proj-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12.5px;
  font-family: var(--font-mono);
  color: var(--ink-2);
  border: 1px solid var(--border);
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.proj-link:hover { background: var(--surface-2); color: var(--ink); border-color: var(--border-2); transform: translateY(-1px); }
.proj-link.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.proj-link.primary:hover { background: var(--accent); color: var(--accent-ink); }
.proj-link svg { width: 13px; height: 13px; }

.proj-footer {
  margin-top: 28px;
  display: flex; justify-content: center; gap: 10px;
  flex-wrap: wrap;
}
.proj-see-more {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink);
  font-size: 14px; font-weight: 500;
  transition: background .15s, border-color .15s, transform .15s;
}
.proj-see-more:hover { background: var(--surface-2); border-color: var(--border-2); transform: translateY(-1px); }
.proj-see-more .count {
  font-family: var(--font-mono); font-size: 11px;
  padding: 2px 7px; border-radius: 999px;
  background: var(--surface-2);
  color: var(--ink-3);
  border: 1px solid var(--border);
}

/* ============ Education ============ */
.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
}
@media (max-width: 760px) { .edu-card { grid-template-columns: 1fr; gap: 20px; } }
.edu-card + .edu-card { margin-top: 14px; }
.edu-head { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.edu-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.edu-head h3 em { font-style: normal; font-weight: 400; color: var(--ink-3); }
.edu-head .sub { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-3); }
.edu-head .meta { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }
.edu-card p { margin: 0 0 14px; font-size: 14.5px; line-height: 1.6; color: var(--ink-2); }
.edu-card ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 8px; }
.edu-card li { font-size: 14px; color: var(--ink-2); display: flex; gap: 10px; }
.edu-card li::before { content: "\2192"; color: var(--accent); flex-shrink: 0; }
.edu-side {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 18px;
  display: flex; flex-direction: column; gap: 12px;
  font-size: 13px;
}
.edu-side .label {
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-3);
}
.edu-side .stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.edu-side .chip {
  font-family: var(--font-mono); font-size: 11px;
  padding: 4px 9px; border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink-2);
}
.edu-side .stat-row { display: flex; justify-content: space-between; padding: 8px 0; border-top: 1px solid var(--border); }
.edu-side .stat-row:first-of-type { border-top: 0; padding-top: 0; }
.edu-side .lbl { color: var(--ink-3); font-family: var(--font-mono); font-size: 11.5px; }
.edu-side .val { color: var(--ink); font-weight: 500; font-size: 13px; }

/* ============ Hobbies ============ */
.hobbies-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
@media (max-width: 720px) { .hobbies-grid { grid-template-columns: 1fr; } }
.hobby {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  min-height: 260px;
  display: flex; flex-direction: column; justify-content: space-between;
  gap: 16px;
  transition: transform .25s var(--ease);
}
.hobby:hover { transform: translateY(-3px); }
.hobby .glyph {
  width: 56px; height: 56px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--ink-2);
  display: grid; place-items: center;
  font-size: 26px;
  border: 1px solid var(--border);
}
.hobby h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--ink);
}
.hobby h3 em { font-style: normal; font-weight: 400; color: var(--ink-3); font-size: 0.6em; letter-spacing: 0.02em; text-transform: uppercase; font-family: var(--font-mono); vertical-align: middle; }
.hobby p { margin: 12px 0 0; font-size: 14.5px; line-height: 1.55; color: var(--ink-2); }
.hobby .glyph svg { width: 28px; height: 28px; }

/* ============ Achievements ============ */
.ach-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
@media (max-width: 720px) { .ach-list { grid-template-columns: 1fr; } }
.ach {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 22px;
  display: flex; gap: 14px; align-items: flex-start;
  cursor: pointer;
  transition: transform .2s var(--ease), border-color .15s;
}
.ach:hover { transform: translateY(-2px); border-color: var(--border-2); }
.ach .glyph {
  flex-shrink: 0; width: 40px; height: 40px;
  border-radius: 12px; background: var(--surface-2);
  border: 1px solid var(--border);
  display: grid; place-items: center; font-size: 20px;
}
.ach h4 { margin: 0 0 4px; font-size: 16px; font-weight: 600; color: var(--ink); }
.ach p { margin: 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.5; }
.ach .more {
  margin-left: auto;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-3);
  align-self: center;
  flex-shrink: 0;
}

/* ============ Certifications ============ */
.cert-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 880px) { .cert-list { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cert-list { grid-template-columns: 1fr; } }
.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 22px;
  display: flex; flex-direction: column; gap: 8px;
  transition: transform .2s var(--ease), border-color .15s;
}
.cert-card:hover { transform: translateY(-2px); border-color: var(--border-2); }
.cert-card .cert-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  display: grid; place-items: center;
  font-size: 18px; color: var(--accent);
}
.cert-card h4 { margin: 0; font-size: 15px; font-weight: 600; color: var(--ink); line-height: 1.3; }
.cert-card .cert-issuer { font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); }

/* ============ Contact ============ */
.contact {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 80px 56px;
  text-align: center;
  position: relative; overflow: hidden;
}
@media (max-width: 720px) { .contact { padding: 56px 24px; } }
.contact h2 {
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 88px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin: 0 0 24px;
  color: var(--ink);
}
.contact h2 em { font-style: normal; font-weight: 400; color: var(--ink-3); }
.contact p {
  max-width: 540px; margin: 0 auto 36px;
  font-size: 17px; line-height: 1.55; color: var(--ink-2);
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  max-width: 720px; margin: 48px auto 0;
}
@media (max-width: 600px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-grid a {
  display: flex; gap: 12px; align-items: center;
  padding: 14px 18px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  text-align: left;
  transition: transform .15s var(--ease), border-color .15s;
}
.contact-grid a:hover { transform: translateY(-2px); border-color: var(--border-2); }
.contact-grid .lbl { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.06em; }
.contact-grid .val { font-size: 14px; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.contact-grid .ico { width: 18px; height: 18px; color: var(--ink-2); flex-shrink: 0; }
.contact-grid .ico-linkedin { color: #0A66C2; }
.contact-grid .ico-github { color: var(--ink); }
.contact-grid .ico-email { color: #EA4335; }
.contact-grid .ico-phone { color: #34A853; }

/* ============ Coding profiles row ============ */
.profile-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  max-width: 720px; margin: 10px auto 0;
}
@media (max-width: 720px) { .profile-row { grid-template-columns: 1fr; } }
.profile {
  display: flex; align-items: center; gap: 12px;
  padding: 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  text-align: left;
  transition: transform .15s var(--ease), border-color .15s;
}
.profile:hover { transform: translateY(-2px); border-color: var(--border-2); }
.profile .pf-icon {
  flex-shrink: 0;
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-size: 13px; font-weight: 600;
  color: var(--ink-2);
}
.profile .pf-meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.profile .pf-name { font-size: 13px; color: var(--ink); font-weight: 500; }
.profile .pf-handle { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ============ Modal ============ */
.modal-bg {
  position: fixed; inset: 0;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
  display: grid; place-items: center;
  padding: 24px;
  animation: fadeIn .2s var(--ease);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.modal {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--r-xl);
  width: 100%; max-width: 880px;
  max-height: 88vh;
  overflow-y: auto;
  overflow-x: hidden;
  clip-path: inset(0 round var(--r-xl));
  animation: slideUp .25s var(--ease);
  position: relative;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}
.modal::-webkit-scrollbar { width: 6px; }
.modal::-webkit-scrollbar-track { background: transparent; }
.modal::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
.modal-close {
  position: sticky; top: 16px;
  float: right;
  margin: 16px 16px -52px 0;
  width: 36px; height: 36px;
  border-radius: 999px !important;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-2);
  display: grid; place-items: center;
  z-index: 10;
  transition: background .15s, border-color .15s;
}
.modal-close:hover { background: var(--surface-2); border-color: var(--border-2); }
.modal-close:focus-visible { outline: none; border-radius: 999px !important; }
.modal-hero {
  aspect-ratio: 21/9;
  background: #0d1117;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.modal-hero > svg, .modal-hero > div { width: 100%; height: 100%; display: block; }
.modal-hero > img, .modal-hero img { width: 100%; height: 100%; object-fit: contain; display: block; padding: 8px; background: #0d1117; }
.modal-body { padding: 36px 44px 44px; }
@media (max-width: 600px) { .modal-body { padding: 24px 22px 32px; } .modal-hero { aspect-ratio: 2/1; } }
.modal-tag {
  display: inline-block;
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--accent);
  padding: 4px 10px; border-radius: 999px;
  background: var(--accent-soft);
  margin-bottom: 14px;
}
.modal h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink);
}
.modal .lede {
  font-size: 17px; line-height: 1.55; color: var(--ink-2);
  margin: 0 0 28px;
}
.modal h3 {
  margin: 28px 0 12px;
  font-family: var(--font-display);
  font-size: 16px; font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.modal p { margin: 0 0 12px; font-size: 15px; line-height: 1.65; color: var(--ink-2); }
.modal ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 8px; }
.modal li { font-size: 14.5px; color: var(--ink-2); display: flex; gap: 10px; line-height: 1.55; }
.modal li::before { content: "\2192"; color: var(--accent); flex-shrink: 0; }
.modal-stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.modal-stack .chip {
  font-family: var(--font-mono); font-size: 11.5px;
  padding: 4px 10px; border-radius: 6px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--ink-2);
}
.modal-actions {
  display: flex; gap: 10px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.modal-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px; margin: 8px 0 0;
}
@media (max-width: 600px) { .modal-stats { grid-template-columns: 1fr 1fr; } }
.modal-stat {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 16px;
}
.modal-stat .v {
  font-family: var(--font-display);
  font-size: 24px; font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.modal-stat .l {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-3);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-top: 4px;
}

/* ============ Instagram grid ============ */
.insta-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 8px; margin-top: 12px;
}
.insta-cell {
  aspect-ratio: 1; border-radius: var(--r-sm);
  overflow: hidden; display: block;
  transition: transform .15s var(--ease), opacity .15s;
}
.insta-cell:hover { transform: scale(1.03); opacity: 0.8; }
.insta-cell svg { width: 100%; height: 100%; display: block; }

/* ============ Scroll-triggered reveals ============ */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.revealed { opacity: 1; transform: none; }

.reveal-stagger {
  opacity: 0; transform: translateY(30px) scale(0.97);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal-stagger.revealed { opacity: 1; transform: none; }

/* Section heading animation */
.sec-h h2 {
  opacity: 0; transform: translateX(-20px);
  transition: opacity 0.7s var(--ease) 0.1s, transform 0.7s var(--ease) 0.1s;
}
.revealed .sec-h h2, .reveal.revealed .sec-h h2 { opacity: 1; transform: none; }
.sec-h .lede {
  opacity: 0; transform: translateY(10px);
  transition: opacity 0.6s var(--ease) 0.25s, transform 0.6s var(--ease) 0.25s;
}
.revealed .sec-h .lede, .reveal.revealed .sec-h .lede { opacity: 1; transform: none; }
.sec-h .num {
  opacity: 0;
  transition: opacity 0.5s var(--ease) 0.05s;
}
.revealed .sec-h .num, .reveal.revealed .sec-h .num { opacity: 1; }

/* Hero entrance animation */
.hero-content {
  animation: heroIn 1s var(--ease) 0.3s both;
}
@keyframes heroIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: none; }
}
.hero-eyebrow {
  animation: fadeSlide 0.6s var(--ease) 0.5s both;
}
.hero-name {
  animation: fadeSlide 0.6s var(--ease) 0.7s both;
}
.hero h1 {
  animation: fadeSlide 0.7s var(--ease) 0.9s both;
}
.hero-tagline {
  animation: fadeSlide 0.6s var(--ease) 1.1s both;
}
.hero-ctas {
  animation: fadeSlide 0.6s var(--ease) 1.3s both;
}
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

/* Card hover lift with shadow */
.proj-card:hover, .edu-card:hover, .exp-card:hover, .ach:hover, .hobby:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

/* Smooth about photo */
.about-photo-frame img {
  transition: transform 0.5s var(--ease);
}
.about-photo-frame:hover img {
  transform: scale(1.03);
}

/* ============ Scroll progress bar ============ */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px;
  background: var(--accent); z-index: 70;
  pointer-events: none;
}

/* ============ Back to top ============ */
.back-to-top {
  position: fixed; bottom: 28px; right: 28px;
  width: 44px; height: 44px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink-2);
  display: grid; place-items: center;
  z-index: 50;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  animation: fadeIn .3s var(--ease);
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.back-to-top:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); transform: translateY(-2px); }

/* ============ Footer ============ */
.footer {
  padding: 48px 0 40px;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--ink-3);
  border-top: 1px solid var(--border);
  margin-top: 60px;
  text-align: center;
}
#contact { padding-bottom: 40px; }
.footer-slogan {
  font-family: var(--font-display); font-size: 15px;
  font-style: italic; color: var(--ink-2);
  margin-bottom: 16px; letter-spacing: -0.01em;
}
.footer-row {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; flex-wrap: wrap;
}
.footer-item { display: inline-flex; align-items: center; gap: 5px; color: var(--ink-3); }
.footer-dot { color: var(--ink-4); }
@media (max-width: 640px) {
  .footer-row { flex-direction: column; gap: 6px; }
  .footer-dot { display: none; }
}

/* ============ Experience tech logos row ============ */
.exp-tech-logos {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: 16px;
}
.exp-logo-item {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px 6px 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 12px; color: var(--ink-2);
  transition: border-color .15s, transform .15s;
}
.exp-logo-item:hover { border-color: var(--border-2); transform: translateY(-1px); }
.exp-logo-label { font-family: var(--font-sans); }

/* ============ Logo img inside chips ============ */
.logo img { display: block; width: 16px; height: 16px; }
.chip { display: inline-flex; align-items: center; gap: 6px; }
.chip .logo { display: inline-flex; }
.chip .logo img { width: 14px; height: 14px; }
.proj-chip { display: inline-flex; align-items: center; gap: 5px; }
.proj-chip .logo { display: inline-flex; }
.proj-chip .logo img { width: 13px; height: 13px; }

/* ============ Mobile responsiveness ============ */
@media (max-width: 480px) {
  .hero h1 { font-size: 42px; }
  .hero-name { font-size: 14px; }
  .hero-eyebrow { font-size: 11px; padding: 5px 10px; }
  .hero-tagline { font-size: 15px; margin-top: 20px; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }

  .sec-h h2 { font-size: 32px; }
  .sec-h .lede { margin-left: 0; max-width: 100%; margin-top: 12px; }
  .sec-h { flex-direction: column; gap: 8px; }

  .about-grid { grid-template-columns: 1fr; gap: 24px; }
  .about p { font-size: 16px; }

  .exp-card { grid-template-columns: 1fr; gap: 20px; padding: 20px; }
  .exp-head h3 { font-size: 18px; }

  .proj-track { grid-template-columns: 1fr; }
  .proj-body { padding: 16px; }

  .edu-card { grid-template-columns: 1fr; gap: 16px; padding: 20px; }
  .edu-head h3 { font-size: 18px; }

  .stack-grid { grid-template-columns: 1fr; }

  .ach-list { grid-template-columns: 1fr; }
  .ach .more { display: none; }

  .cert-list { grid-template-columns: 1fr; }

  .hobbies-grid { grid-template-columns: 1fr; }
  .hobby { min-height: 200px; padding: 24px; }
  .hobby h3 { font-size: 22px; }

  .contact { padding: 40px 20px; }
  .contact h2 { font-size: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .profile-row { grid-template-columns: 1fr; }

  .modal { border-radius: var(--r-lg); }
  .modal-body { padding: 20px 16px 28px; }
  .modal-stats { grid-template-columns: 1fr 1fr; gap: 8px; }
  .modal h2 { font-size: 24px; }

  .footer { flex-direction: column; text-align: center; }

  .nav { padding: 7px 7px 7px 16px; }
  .nav-cta { font-size: 12px; padding: 7px 12px; }
}

@media (max-width: 360px) {
  .hero h1 { font-size: 36px; }
  .hero-eyebrow { font-size: 10px; }
  .hstat-n { font-size: 24px; }
  .contact h2 { font-size: 32px; }
}

/* smooth scrolling & touch */
@media (hover: none) {
  .hobby:hover, .ach:hover, .stack-card:hover, .proj-card:hover, .cert-card:hover {
    transform: none;
  }
}
html { -webkit-tap-highlight-color: transparent; }
* { -webkit-overflow-scrolling: touch; }

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal, .reveal-stagger { opacity: 1; transform: none; }
  .kinetic { display: none; }
  .rot-word { opacity: 0; }
  .rot-word.rot-active { opacity: 1; transform: none; }
  .scroll-progress { display: none; }
}

/* ============ Print styles ============ */
@media print {
  .nav, .hero-canvas-wrap, .hero-scrim, .hero-scroll,
  .back-to-top, .scroll-progress, .mobile-menu,
  .hamburger, .theme-toggle, .hero-ctas { display: none !important; }
  .section { padding: 40px 0; break-inside: avoid; }
  body { background: white; color: black; }
  .hero { min-height: auto; padding: 40px 0; }
  .modal-bg { display: none; }
  .reveal, .reveal-stagger { opacity: 1; transform: none; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666; }
  .contact { background: transparent; border: 1px solid #ddd; }
}