/* ============================================================
   William Fang — Portfolio
   Design System: Bold Editorial (inspired by eleveight.studio)
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Color palette */
  --bg: #f0f0f0;
  --bg-alt: #f7f7f7;
  --bg-card: #ffffff;
  --bg-dark: #0a0a0a;
  --accent: #baff00;
  --accent-dim: #c8fe3a;
  --accent-dark: #9ad400;

  --text: #1a1a1a;
  --text-2: #525252;
  --text-3: #8a8a8a;
  --text-4: #b0b0b0;
  --text-inv: #f0f0f0;

  --border: #e0e0e0;
  --border-light: #ececec;

  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', sans-serif;
  --font-num: 'Satoshi', 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Layout */
  --max-width: 1320px;
  --page-pad: 48px;
  --radius: 20px;
  --radius-sm: 12px;
  --radius-pill: 100px;

  /* Shadows */
  --shadow-card: 0 0.5px 0.5px rgba(0,0,0,0.02), 0 1px 1px rgba(0,0,0,0.02), 0 2px 2px rgba(0,0,0,0.02), 0 4px 4px rgba(0,0,0,0.02), 0 8px 8px rgba(0,0,0,0.03), 0 16px 16px rgba(0,0,0,0.03);
  --shadow-hover: 0 0.5px 0.5px rgba(0,0,0,0.03), 0 2px 2px rgba(0,0,0,0.03), 0 4px 4px rgba(0,0,0,0.03), 0 8px 8px rgba(0,0,0,0.04), 0 16px 24px rgba(0,0,0,0.06), 0 32px 48px rgba(0,0,0,0.08);
  --shadow-portrait: 0 20px 60px rgba(0,0,0,0.12), 0 40px 100px rgba(0,0,0,0.08);

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --dur: 0.4s;
  --dur-slow: 0.8s;
  --dur-slower: 1.2s;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.55;
  letter-spacing: -0.02em;
  overflow-x: hidden;
  cursor: none;
}

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; font-size: inherit; }

::selection { background: var(--accent); color: #000; }

/* ---------- Custom Cursor ---------- */
.cursor-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  background: var(--text);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s, transform 0.1s;
}

.cursor-ring {
  position: fixed;
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--text-3);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.3s var(--ease), height 0.3s var(--ease), border-color 0.3s, opacity 0.3s;
}

.cursor-ring.hovering {
  width: 56px;
  height: 56px;
  border-color: var(--accent-dark);
  background: rgba(186, 255, 0, 0.08);
}

@media (max-width: 768px) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---------- Noise Overlay ---------- */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9990;
  opacity: 0.03;
  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='0.85' numOctaves='4' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' /%3E%3C/svg%3E");
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px var(--page-pad);
  transition: all 0.4s var(--ease);
}

.nav.scrolled {
  background: rgba(240, 240, 240, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  padding: 14px var(--page-pad);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: -0.03em;
  color: var(--text);
  transition: opacity 0.3s;
}
.nav-logo:hover { opacity: 0.7; }

.nav-logo-icon {
  width: 36px;
  height: 36px;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
  margin-right: 28px;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: -0.02em;
  position: relative;
  transition: color 0.3s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--text);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-lang {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 1px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.nav-lang:hover { color: var(--text); border-color: var(--text-3); }
.lang-active { color: var(--text); font-weight: 500; }
.lang-divider { margin: 0 2px; opacity: 0.3; }

.nav-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.nav-menu-btn span {
  width: 18px;
  height: 1.5px;
  background: var(--text);
  transition: all 0.3s var(--ease);
}
.nav-menu-btn.active span:nth-child(1) { transform: translateY(3.25px) rotate(45deg); }
.nav-menu-btn.active span:nth-child(2) { transform: translateY(-3.25px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}

.btn-pill-dark {
  background: var(--text);
  color: var(--text-inv);
  border-color: var(--text);
}
.btn-pill-dark:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.btn-pill-light {
  background: #fff;
  color: var(--text-2);
  border-color: var(--border);
}
.btn-pill-light:hover {
  color: var(--text);
  border-color: var(--text-3);
  transform: translateY(-2px);
}

.btn-pill-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--text-3);
}
.btn-pill-outline:hover {
  border-color: var(--text);
  transform: translateY(-2px);
}

.btn-pill-lg {
  padding: 16px 32px;
  font-size: 0.9375rem;
}

.btn-arrow {
  transition: transform 0.3s var(--ease);
}
.btn-pill:hover .btn-arrow { transform: translateX(4px); }

/* ---------- Mobile Menu ---------- */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}
.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}
.mobile-menu a {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-style: italic;
  color: var(--text);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  padding: 120px var(--page-pad) 60px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 60px;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 28px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.hero-eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--text-3);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 7.5rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  color: var(--text);
  margin-bottom: 32px;
}

.hero-title-line {
  display: block;
}

.hero-title-italic {
  font-style: italic;
  color: var(--text-2);
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-2);
  line-height: 1.6;
  max-width: 500px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Hero Visual — Portrait with gradient fade */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-portrait-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
  z-index: 2;
}

.portrait-img-fade {
  width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center top;
  filter: contrast(1.05) saturate(0.95);
  transition: transform 0.6s var(--ease);
  /* Gradient fade at bottom — blends into background */
  -webkit-mask-image: linear-gradient(to bottom, #000 55%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 55%, transparent 100%);
}

.hero-portrait-wrap:hover .portrait-img-fade {
  transform: scale(1.02);
}

/* Floating cards */
.hero-floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-card);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text);
  z-index: 3;
  animation: floatCard 5s ease-in-out infinite;
}

.card-icon-sm {
  font-size: 0.625rem;
  color: var(--accent-dark);
}

.hero-card-1 { top: 10%; left: -8%; animation-delay: 0s; }
.hero-card-2 { bottom: 20%; left: -10%; animation-delay: 1.5s; }
.hero-card-3 { top: 45%; right: -8%; animation-delay: 0.8s; }

@keyframes floatCard {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(1deg); }
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-3), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- Marquee Strip ---------- */
.marquee-strip {
  overflow: hidden;
  padding: 28px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 40px;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
  width: max-content;
}

.marquee-item {
  font-family: var(--font-display);
  font-size: 2rem;
  font-style: italic;
  color: var(--text-2);
  letter-spacing: -0.02em;
}

.marquee-dot {
  font-size: 1rem;
  color: var(--accent-dark);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---------- Stats Section ---------- */
.stats-section {
  padding: 100px var(--page-pad);
}

.stats-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 40px 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}
.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.stat-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.stat-item:hover::before {
  transform: scaleX(1);
}

.stat-number {
  font-family: var(--font-num);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-3);
  letter-spacing: -0.01em;
}

/* ---------- Section Label ---------- */
.section-label {
  max-width: var(--max-width);
  margin: 0 auto 56px;
  padding: 0 var(--page-pad);
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-2);
}

.section-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-dark);
  background: rgba(186, 255, 0, 0.15);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-weight: 500;
}

/* ---------- About Section ---------- */
.about-section {
  padding: 100px 0;
}

.about-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-pad);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
}

.about-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
  color: var(--text);
  margin-bottom: 32px;
}

.about-text p {
  font-size: 1.0625rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 18px;
}

.about-meta {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 40px;
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  align-self: start;
  position: sticky;
  top: 100px;
  overflow: hidden;
}

.about-meta-blob {
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: var(--accent);
  border-radius: 50% 40% 60% 50% / 50% 60% 40% 50%;
  opacity: 0.15;
  z-index: 0;
  animation: blobMorph 8s ease-in-out infinite;
}

@keyframes blobMorph {
  0%, 100% { border-radius: 50% 40% 60% 50% / 50% 60% 40% 50%; }
  33% { border-radius: 60% 50% 40% 60% / 40% 50% 60% 50%; }
  66% { border-radius: 40% 60% 50% 40% / 60% 40% 50% 60%; }
}

.about-meta > .meta-item {
  position: relative;
  z-index: 1;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.meta-value {
  font-size: 0.9375rem;
  color: var(--text);
  font-weight: 500;
}

.meta-link {
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s;
}
.meta-link:hover { border-color: var(--text); }

/* ---------- Work Section ---------- */
.work-section {
  padding: 100px 0;
}

.work-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-pad);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.work-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.work-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.work-card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
  background: var(--bg-alt);
}

.work-card-num {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-inv);
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}
.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.work-card:hover .work-card-image img {
  transform: scale(1.06);
}

/* Accent overlay on hover */
.work-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(186,255,0,0.15));
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  z-index: 1;
}
.work-card:hover .work-card-image::after {
  opacity: 1;
}

.work-card-body {
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.work-card-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.work-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.work-card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.work-card-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-3);
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
}

.work-card-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-3);
  transition: all 0.3s var(--ease);
  flex-shrink: 0;
}
.work-card:hover .work-card-arrow {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text);
  transform: rotate(-45deg);
}

/* ---------- Tools Section ---------- */
.tools-section {
  padding: 100px 0;
}

.tools-filter {
  max-width: var(--max-width);
  margin: 0 auto 40px;
  padding: 0 var(--page-pad);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-pill {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-3);
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.filter-pill:hover {
  color: var(--text);
  border-color: var(--text-3);
}
.filter-pill.active {
  background: var(--text);
  border-color: var(--text);
  color: var(--text-inv);
}

.tools-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-pad);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}
.tool-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0;
  background: var(--accent);
  transition: height 0.4s var(--ease);
  z-index: 0;
}
.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.tool-card:hover::after {
  height: 4px;
}

.tool-card > * {
  position: relative;
  z-index: 1;
}

.tool-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s;
}
.tool-card:hover .tool-card-icon {
  background: var(--accent);
}
.tool-card-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--text);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tool-card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.tool-card-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.5;
}

.tool-card-cat {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: auto;
}

/* ---------- Skills Section — Framed Card Layout ---------- */
.skills-section {
  padding: 100px 0;
}

.skills-frame {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-pad);
}

.skills-frame-inner {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 8px;
  box-shadow: var(--shadow-card);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-light);
  border-radius: calc(var(--radius) - 4px);
  overflow: hidden;
}

.skill-category {
  padding: 36px 32px;
  background: var(--bg-card);
  transition: background 0.3s var(--ease);
  position: relative;
}

.skill-category:hover {
  background: var(--bg-alt);
}

.skill-category-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 20px;
  color: var(--text);
  opacity: 0.8;
}

.skill-category-name {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-2);
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: all 0.3s;
}
.skill-tag:hover {
  border-color: var(--accent-dark);
  background: rgba(186, 255, 0, 0.08);
  color: var(--text);
}

.skill-tag-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-dark);
}

/* ---------- Experience Timeline ---------- */
.experience-section {
  padding: 100px 0;
}

.timeline {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-pad);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.exp-item {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  gap: 40px;
  padding: 36px 0;
  border-top: 1px solid var(--border);
  transition: padding 0.3s var(--ease);
  position: relative;
}
.exp-item:last-child { border-bottom: 1px solid var(--border); }
.exp-item:hover { padding-left: 16px; }

.exp-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--accent-dark);
  transition: width 0.3s var(--ease);
}
.exp-item:hover::before { width: 8px; }

.exp-period {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  letter-spacing: 0.02em;
  padding-top: 4px;
}

.exp-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.exp-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.exp-company {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.exp-desc {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-top: 8px;
  max-width: 640px;
}

.exp-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.exp-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-3);
  padding: 3px 8px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
}

.exp-arrow {
  font-size: 1.25rem;
  color: var(--text-3);
  align-self: center;
  transition: transform 0.3s, color 0.3s;
}
.exp-item:hover .exp-arrow {
  color: var(--text);
  transform: rotate(-45deg);
}

/* ---------- Contact Section ---------- */
.contact-section {
  padding: 140px var(--page-pad);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(186,255,0,0.08), transparent 70%);
  z-index: 0;
}

.contact-inner {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.contact-heading {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-style: italic;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 24px;
  line-height: 1;
}

.contact-desc {
  font-size: 1.125rem;
  color: var(--text-2);
  line-height: 1.5;
  margin-bottom: 44px;
}

.contact-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--accent);
  overflow: hidden;
  position: relative;
}

.footer-marquee {
  padding: 50px 0;
  overflow: hidden;
  border-bottom: 1px solid rgba(0,0,0,0.08);
}

.footer-marquee-track {
  display: flex;
  align-items: center;
  gap: 24px;
  white-space: nowrap;
  animation: marquee 20s linear infinite;
  width: max-content;
}

.footer-marquee-track span {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 6rem);
  font-style: italic;
  color: #000;
  letter-spacing: -0.04em;
  line-height: 1;
}

.footer-star {
  font-size: 2.5rem !important;
  font-style: normal !important;
  animation: spin 4s linear infinite;
  display: inline-block;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.footer-bottom {
  padding: 24px var(--page-pad);
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: rgba(0,0,0,0.5);
}

.footer-divider { margin: 0 8px; }

.footer-links a {
  color: rgba(0,0,0,0.7);
  transition: color 0.3s;
}
.footer-links a:hover { color: #000; }

/* ---------- Scroll Reveal ---------- */
.reveal-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root { --page-pad: 32px; }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-visual { order: -1; }
  .hero-portrait-card { max-width: 300px; margin: 0 auto; }
  .hero-eyebrow { justify-content: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }

  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .about-meta { position: static; }
  .work-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --page-pad: 20px; }

  .nav-links { display: none; }
  .nav-lang { display: none; }
  .nav-menu-btn { display: flex; }
  .nav-actions .btn-pill-light { display: none; }
  .mobile-menu { display: flex; }

  .hero { padding: 100px var(--page-pad) 60px; min-height: auto; }
  .hero-scroll-hint { display: none; }
  .hero-floating-card { display: none; }

  .marquee-item { font-size: 1.5rem; }

  .stats-inner { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-item { padding: 24px 20px; }
  .stat-number { font-size: 2.25rem; }

  .about-meta { padding: 28px; }

  .tools-grid { grid-template-columns: 1fr; }
  .tool-card { padding: 24px; }
  .skills-grid { grid-template-columns: 1fr; }

  .exp-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 28px 0;
  }
  .exp-arrow { display: none; }
  .exp-title { font-size: 1.4rem; }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .contact-section { padding: 80px var(--page-pad); }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.75rem; }
  .stats-inner { grid-template-columns: 1fr; }
  .work-card-body { padding: 18px; }
  .work-card-title { font-size: 1.0625rem; }
}