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

:root {
  --bg: #08080c;
  --bg-elevated: #0e0e14;
  --bg-card: #12121a;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --text: #e8e4de;
  --text-secondary: #9a9590;
  --text-muted: #5a5550;
  --accent: #f59e0b;
  --accent-dim: rgba(245,158,11,0.15);
  --accent-border: rgba(245,158,11,0.25);
  --accent-glow: rgba(245,158,11,0.08);
  --coral: #f97316;
  --green: #34d399;
  --green-dim: rgba(52,211,153,0.1);
  --green-border: rgba(52,211,153,0.25);
  --font-display: 'Sora', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --max-w: 1100px;
}

/* ---- LIGHT THEME ---- */
[data-theme="light"] {
  --bg: #f5f0ea;
  --bg-elevated: #ece7e0;
  --bg-card: #ffffff;
  --border: rgba(0,0,0,0.08);
  --border-hover: rgba(0,0,0,0.15);
  --text: #1a1714;
  --text-secondary: #6b6560;
  --text-muted: #a09a94;
  --accent: #d97706;
  --accent-dim: rgba(217,119,6,0.1);
  --accent-border: rgba(217,119,6,0.25);
  --accent-glow: rgba(217,119,6,0.06);
  --coral: #ea580c;
  --green: #059669;
  --green-dim: rgba(5,150,105,0.08);
  --green-border: rgba(5,150,105,0.25);
}
[data-theme="light"] .site-header {
  background: rgba(245,240,234,0.85);
}
[data-theme="light"] .mobile-menu {
  background: rgba(245,240,234,0.97);
}
[data-theme="light"] .hero-canvas { opacity: 0.25; }
[data-theme="light"] .grain { opacity: 0.03; }
[data-theme="light"] .about-principle { background: #1a1714; }
[data-theme="light"] .about-drives {
  background: var(--accent);
  border-color: var(--accent);
}
[data-theme="light"] .about-drives h3 { color: rgba(255,255,255,0.7); }
[data-theme="light"] .about-drives .drives-text { color: rgba(255,255,255,0.9); }
[data-theme="light"] .about-drives .drives-text u { color: #fff; text-decoration-color: rgba(255,255,255,0.4); }
[data-theme="light"] .marquee-track span { color: var(--text-muted); }
[data-theme="light"] .marquee-track span::after { color: var(--accent); }

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
  cursor: none;
}

@media (max-width: 768px) {
  body { cursor: auto; }
}

a { color: inherit; text-decoration: none; cursor: none; }
@media (max-width: 768px) {
  a { cursor: pointer; }
}
button { cursor: none; }
@media (max-width: 768px) {
  button { cursor: pointer; }
}

/* ---- CUSTOM CURSOR ---- */
.cursor-dot {
  position: fixed;
  top: 0; left: 0;
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s var(--ease), opacity 0.2s;
  transform: translate(-50%, -50%);
  mix-blend-mode: difference;
}
.cursor-ring {
  position: fixed;
  top: 0; left: 0;
  width: 36px; height: 36px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transition: width 0.4s var(--ease), height 0.4s var(--ease), border-color 0.3s, opacity 0.2s;
  transform: translate(-50%, -50%);
  opacity: 0.5;
}
.cursor-ring.hovering {
  width: 56px; height: 56px;
  border-color: var(--coral);
  opacity: 0.8;
}
@media (max-width: 768px) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---- GRAIN OVERLAY ---- */
.grain {
  position: fixed;
  inset: 0;
  z-index: 9000;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px;
}

/* ---- HEADER ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(8,8,12,0.8);
  backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.4s, border-color 0.4s;
}
.site-header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
  border-color: var(--border-hover);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.85rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}
.header-logo .dot { color: var(--accent); }
.header-logo .underscore {
  color: var(--accent);
  animation: blink 1.2s step-end infinite;
}
@keyframes blink {
  0%,100% { opacity: 1; }
  50% { opacity: 0; }
}

.header-nav-wrap {
  display: flex;
  align-items: center;
}
.header-nav {
  display: flex;
  gap: 1.4rem;
  list-style: none;
  align-items: center;
}
.header-nav a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  transition: color 0.3s;
  position: relative;
  text-transform: uppercase;
}
.header-nav a::before {
  content: '';
  position: absolute;
  bottom: -6px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.header-nav a:hover,
.header-nav a.active { color: var(--accent); }
.header-nav a:hover::before,
.header-nav a.active::before {
  transform: scaleX(1);
  transform-origin: left;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.header-socials {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}
.header-socials a {
  color: var(--text-muted);
  transition: color 0.3s, transform 0.3s var(--ease);
  display: flex;
  padding: 4px;
}
.header-socials a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}
.header-socials a svg { width: 16px; height: 16px; }

.header-resume {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.5rem 1.2rem;
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent-border);
  border-radius: 4px;
  transition: all 0.3s var(--ease);
}
.header-resume:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-dim);
}
.header-resume svg { width: 12px; height: 12px; }

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--text);
  transition: all 0.3s var(--ease);
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4.5px,4.5px); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(4.5px,-4.5px); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(8,8,12,0.97);
  backdrop-filter: blur(30px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu .mobile-resume {
  margin-top: 1rem;
  padding: 0.7rem 2rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--accent);
  font-weight: 600;
}
.mobile-menu .mobile-resume:hover {
  background: var(--accent);
  color: var(--bg);
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem 2.5rem 4rem;
  overflow: hidden;
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.6;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}
.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeUp 0.8s var(--ease) 0.2s forwards;
}
@keyframes heroFadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.95;
  margin-bottom: 2rem;
  color: var(--text);
  overflow: hidden;
}
.hero-name .word {
  display: inline-block;
  overflow: hidden;
}
.hero-name .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  animation: charReveal 0.6s var(--ease) forwards;
}
@keyframes charReveal {
  to { opacity: 1; transform: translateY(0); }
}
.hero-name .name-accent {
  color: var(--accent);
  position: relative;
}
.hero-name .name-accent::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 0; right: 0;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  opacity: 0.3;
}

.hero-tagline {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.8;
  max-width: 540px;
  margin: 0 auto 2.5rem;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeUp 0.8s var(--ease) 0.8s forwards;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--green);
  letter-spacing: 0.04em;
  padding: 0.55rem 1.4rem;
  border: 1px solid var(--green-border);
  background: var(--green-dim);
  border-radius: 100px;
  margin-bottom: 3rem;
  opacity: 0;
  animation: heroFadeUp 0.8s var(--ease) 1s forwards;
}
.status-dot {
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
  box-shadow: 0 0 8px rgba(52,211,153,0.4);
}
@keyframes pulse {
  0%,100% { opacity: 1; box-shadow: 0 0 8px rgba(52,211,153,0.4); }
  50% { opacity: 0.5; box-shadow: 0 0 16px rgba(52,211,153,0); }
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: heroFadeUp 0.8s var(--ease) 1.2s forwards;
}

.btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.9rem 2.2rem;
  border: 1.5px solid var(--border-hover);
  background: transparent;
  color: var(--text);
  transition: all 0.35s var(--ease);
  font-weight: 500;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateY(100%);
  transition: transform 0.4s var(--ease);
  z-index: -1;
}
.btn:hover {
  border-color: var(--accent);
  color: var(--bg);
  transform: translateY(-2px);
}
.btn:hover::before { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 700;
}
.btn-primary::before { background: var(--coral); }
.btn-primary:hover {
  border-color: var(--coral);
  box-shadow: 0 8px 30px rgba(245,158,11,0.2);
}

/* ---- SECTIONS ---- */
.main-content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2.5rem;
}
.section {
  padding: 6rem 0;
  position: relative;
}
.section-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}
.section-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
  flex-shrink: 0;
}
.section-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
  flex-shrink: 0;
  margin: 0;
  padding: 0;
}

/* ---- ABOUT ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.about-intro {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2.5rem;
  align-items: center;
  padding: 2.5rem 3rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
}
.about-intro::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--coral));
  border-radius: 0 2px 2px 0;
}
.about-photo {
  position: relative;
}
.about-photo img {
  width: 200px;
  height: 240px;
  object-fit: cover;
  object-position: center top;
  border-radius: 10px;
  display: block;
  filter: grayscale(20%);
  transition: filter 0.5s var(--ease), transform 0.5s var(--ease);
}
.about-photo:hover img {
  filter: grayscale(0%);
  transform: scale(1.02);
}
.about-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 10px;
  border: 2px solid var(--accent-border);
  pointer-events: none;
  transition: border-color 0.4s;
}
.about-photo:hover::after {
  border-color: var(--accent);
}
.about-text {
  font-size: 1.15rem;
  color: var(--text);
  line-height: 1.85;
  font-weight: 400;
}
@media (max-width: 768px) {
  .about-intro {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2rem 1.8rem;
    text-align: center;
  }
  .about-photo { justify-self: center; }
  .about-photo img { width: 160px; height: 200px; }
  .about-text { font-size: 1rem; }
}
.about-text strong {
  color: var(--accent);
  font-weight: 600;
}
.about-text em {
  font-style: italic;
  color: var(--text);
}
.about-text p { margin-bottom: 1rem; }
.about-text p:last-child { margin-bottom: 0; }

.about-principle {
  background: linear-gradient(135deg, var(--accent), var(--coral));
  border-radius: 12px;
  padding: 2.2rem;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}
.about-principle::after {
  content: '"';
  position: absolute;
  top: -20px; right: 10px;
  font-size: 8rem;
  font-family: var(--font-display);
  font-weight: 800;
  color: rgba(255,255,255,0.1);
  line-height: 1;
}
.about-principle:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(245,158,11,0.2);
}
.about-principle h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.about-principle blockquote {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: rgba(255,255,255,0.92);
  line-height: 1.8;
  margin: 0; padding: 0; border: none;
}
.about-principle blockquote u {
  color: #fff;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

.about-drives {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.2rem;
  transition: transform 0.4s var(--ease), border-color 0.4s;
}
.about-drives:hover {
  transform: translateY(-4px);
  border-color: var(--accent-border);
}
.about-drives h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.drives-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.85;
}
.drives-text u {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--accent-border);
}

/* ---- MARQUEE ---- */
.marquee {
  overflow: hidden;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 2rem 0 0;
  position: relative;
}
.marquee::before, .marquee::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 100px;
  z-index: 2;
  pointer-events: none;
}
.marquee::before { left: 0; background: linear-gradient(90deg, var(--bg), transparent); }
.marquee::after { right: 0; background: linear-gradient(-90deg, var(--bg), transparent); }
.marquee-track {
  display: flex;
  gap: 0;
  animation: marqueeScroll 30s linear infinite;
  width: max-content;
}
.marquee-track span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  letter-spacing: 0.04em;
  padding: 0 0.3rem;
}
.marquee-track span::after {
  content: ' / ';
  color: var(--accent);
  opacity: 0.4;
  padding: 0 0.8rem;
}
@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---- PROJECTS BENTO ---- */
.projects-bento {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}
.project-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 2rem 2.2rem;
  border-radius: 12px;
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
  min-width: 0;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--coral));
  opacity: 0;
  transition: opacity 0.4s;
}
.project-card:hover::before { opacity: 1; }
.project-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-4px);
  box-shadow: 0 16px 50px rgba(0,0,0,0.3), 0 0 40px var(--accent-glow);
}
.project-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  padding: 2.5rem 3rem;
}
.project-card.featured .project-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.project-card.featured .project-metrics-side {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.2rem;
  padding: 2rem;
  background: var(--bg-elevated);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.project-icon {
  font-size: 1.8rem;
  margin-bottom: 1.2rem;
  display: block;
}
.project-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  letter-spacing: -0.02em;
  transition: color 0.3s;
  line-height: 1.35;
}
.project-card:hover h3 { color: var(--accent); }
.project-card .desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.75;
  margin-bottom: 1.5rem;
  flex: 1;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.2rem;
}
.project-tags span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  padding: 0.25rem 0.7rem;
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  border-radius: 3px;
  letter-spacing: 0.03em;
  font-weight: 500;
  transition: all 0.3s var(--ease);
}
.project-tags span:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.project-metrics {
  display: flex;
  gap: 2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
  margin-bottom: 1rem;
}
.p-metric {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.p-metric strong {
  display: block;
  font-size: 1.3rem;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 0.15rem;
  letter-spacing: -0.02em;
}
.p-metric-side {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.p-metric-side .metric-val {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.03em;
  min-width: 80px;
}
.p-metric-side .metric-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}
.project-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.3s;
  font-weight: 500;
  letter-spacing: 0.03em;
}
.project-link:hover { color: var(--accent); }
.project-link svg { transition: transform 0.3s var(--ease); }
.project-link:hover svg { transform: translateX(4px); }

/* ---- SKILLS VISUAL GRID ---- */
.skills-columns {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
}
.skill-col {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.4s var(--ease);
}
.skill-col:hover {
  border-color: var(--accent-border);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}
.skill-col-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.4rem 0.9rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 4px;
  letter-spacing: 0.02em;
  font-weight: 500;
  transition: all 0.3s var(--ease);
}
.skill-tag:hover {
  background: var(--accent-dim);
  border-color: var(--accent-border);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ---- PUBLICATIONS ---- */
.pub-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 2.5rem 3rem;
  border-radius: 12px;
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}
.pub-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--coral));
}
.pub-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.pub-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.9rem;
  background: var(--accent);
  color: var(--bg);
  border-radius: 3px;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}
.pub-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 0.6rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.pub-venue {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.03em;
  margin-bottom: 1.3rem;
  font-weight: 500;
}
.pub-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}
.pub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.pub-tags span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  padding: 0.25rem 0.7rem;
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  border-radius: 3px;
  letter-spacing: 0.03em;
  font-weight: 500;
}

/* ---- EXPERIENCE ---- */
.timeline {
  max-width: 700px;
}
.timeline-entry {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 2.5rem;
  padding: 2.2rem 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.4s var(--ease);
  position: relative;
}
.timeline-entry::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 2px; height: 100%;
  background: linear-gradient(180deg, var(--accent), transparent);
  border-radius: 1px;
}
.timeline-entry:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.t-period {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  padding-top: 0.3rem;
  line-height: 1.6;
  font-weight: 500;
  letter-spacing: 0.03em;
}
.t-content h3 {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.t-content h3 .company {
  color: var(--text-muted);
  font-weight: 400;
}
.t-location {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  letter-spacing: 0.04em;
}
.t-content ul { list-style: none; padding: 0; }
.t-content ul li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  padding-left: 1.3rem;
  position: relative;
  margin-bottom: 0.4rem;
}
.t-content ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.75rem;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---- EDUCATION ---- */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin-bottom: 2rem;
}
.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 2rem 2.2rem;
  border-radius: 12px;
  transition: all 0.4s var(--ease);
  position: relative;
}
.edu-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}
.edu-date {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
  font-weight: 700;
}
.edu-card h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}
.edu-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}
.edu-loc {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 0.7rem;
  letter-spacing: 0.04em;
}
.edu-coursework {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 0.6rem;
  line-height: 1.6;
}

/* ---- CERTIFICATIONS ---- */
.cert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}
.cert-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.2rem 1.5rem;
  border-radius: 8px;
  transition: all 0.35s var(--ease);
}
.cert-bar:hover {
  border-color: var(--accent-border);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.2);
}
.cert-icon {
  width: 38px; height: 38px;
  border: 1px solid var(--accent-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.95rem;
  flex-shrink: 0;
  background: var(--accent-dim);
}
.cert-text { flex: 1; min-width: 0; overflow-wrap: break-word; }
.cert-text h4 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.cert-text span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}
.cert-arrow {
  width: 14px; height: 14px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color 0.3s, transform 0.3s var(--ease);
}
.cert-bar:hover .cert-arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
}

/* ---- CONTACT ---- */
.contact-section {
  text-align: center;
  padding: 8rem 0;
}
.contact-headline {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 0 0 1.2rem;
  color: var(--text);
  line-height: 1.1;
}
.contact-headline .accent { color: var(--accent); }
.contact-intro {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 3rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.contact-card {
  display: inline-block;
  position: relative;
  padding: 3px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), var(--coral), var(--accent));
  background-size: 200% 200%;
  animation: borderGlow 4s ease-in-out infinite;
}
@keyframes borderGlow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.contact-card-inner {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 2.5rem 3rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.9rem 1.5rem;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all 0.35s var(--ease);
  background: var(--bg-elevated);
  border-radius: 6px;
  font-weight: 400;
  letter-spacing: 0.02em;
}
.contact-item:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(245,158,11,0.1);
}
.contact-item svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
  opacity: 0.5;
  transition: opacity 0.3s;
}
.contact-item:hover svg { opacity: 1; }

/* ---- FOOTER ---- */
.site-footer {
  padding: 3rem 2.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-text {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.footer-text a {
  color: var(--text-secondary);
  transition: color 0.3s;
}
.footer-text a:hover { color: var(--accent); }

/* ---- THEME TOGGLE ---- */
.theme-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 200;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.35s var(--ease);
  padding: 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  transform: rotate(20deg) scale(1.08);
  box-shadow: 0 6px 30px rgba(245,158,11,0.15);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }

/* ---- FOCUS VISIBLE ---- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

/* ---- SCROLL REVEAL ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- REDUCED MOTION ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero-tag, .hero-tagline, .hero-status, .hero-actions { opacity: 1; transform: none; }
  .hero-name .char { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .projects-bento { grid-template-columns: 1fr; }
  .project-card.featured {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .skills-columns { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .marquee::before, .marquee::after { width: 50px; }
}

@media (max-width: 768px) {
  .header-nav, .header-right { display: none; }
  .hamburger { display: flex; }
  .header-inner { padding: 0.85rem 1.5rem; }
  .main-content { padding: 0 1.5rem; }
  .hero { padding: 7rem 1.5rem 3rem; min-height: auto; }
  .hero-name { font-size: 3.2rem; }
  .section { padding: 4rem 0; }
  .about-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .timeline-entry {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 1.8rem;
  }
  .timeline-entry::before { display: none; }
  .pub-card { padding: 2rem 1.8rem; }
  .project-card.featured { padding: 2rem 1.8rem; }
  .project-metrics { flex-wrap: wrap; gap: 1rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; text-align: center; max-width: 280px; }
  .contact-card-inner { flex-direction: column; padding: 1.5rem; }
  .contact-item { font-size: 0.72rem; padding: 0.8rem 1.2rem; word-break: break-all; }
  .contact-headline { font-size: 2.2rem; }
  .section-header { margin-bottom: 2.5rem; }
  .theme-toggle {
    bottom: calc(1.2rem + env(safe-area-inset-bottom, 0px));
    right: calc(1.2rem + env(safe-area-inset-right, 0px));
  }
  .site-header {
    padding-top: env(safe-area-inset-top, 0px);
  }
  .mobile-menu {
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
}

@media (max-width: 480px) {
  .hero-name { font-size: 2.6rem; }
  .project-card { padding: 1.5rem; }
  .project-card.featured { padding: 1.5rem; }
  .about-principle, .about-drives { padding: 1.8rem; }
  .about-intro { padding: 1.5rem; }
  .pub-card { padding: 1.5rem; }
  .timeline-entry { padding: 1.5rem; }
  .edu-card { padding: 1.5rem; }
  .contact-card-inner { padding: 1.2rem; }
  .contact-item { font-size: 0.68rem; padding: 0.7rem 1rem; }
  .cert-bar { padding: 1rem 1.2rem; }
  .section-header { gap: 1rem; }
  .hero-tagline { font-size: 0.95rem; }
  .site-footer { padding: 2rem 1.5rem; }
}