/* ================================================================
   Kundan Singh Sorout — Personal site
   Shares the design system with kundan-teaches (mentor site)
   ================================================================ */

:root {
  /* Type scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.5rem, 1rem + 5.5vw, 5.5rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 220ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Widths */
  --content-narrow: 640px;
  --content: 1180px;
  --content-wide: 1320px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

/* ----------------- DARK THEME ----------------- */
:root,
[data-theme='dark'] {
  --color-bg: #07070c;
  --color-bg-deep: #05050a;
  --color-surface: #0e0e16;
  --color-surface-2: #14141f;
  --color-surface-3: #1c1c2a;
  --color-border: #24243a;
  --color-border-strong: #34344d;

  --color-text: #e8e8f0;
  --color-text-muted: #9a9ab0;
  --color-text-faint: #6b6b85;

  --color-primary: #8b8dff;
  --color-primary-hover: #a5a7ff;
  --color-accent: #d65cff;
  --color-accent-2: #58d6ff;

  --grad: linear-gradient(135deg, #8b8dff 0%, #d65cff 55%, #ff7bdc 100%);
  --grad-soft: linear-gradient(135deg, rgba(139, 141, 255, 0.18), rgba(214, 92, 255, 0.18));

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 10px 40px -10px rgba(139, 141, 255, 0.45);
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ================================================================
   AMBIENT BACKDROP
   ================================================================ */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(139, 141, 255, 0.12), transparent 60%),
    var(--color-bg);
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  will-change: transform;
}
.blob-1 {
  width: 560px; height: 560px;
  top: -120px; left: -100px;
  background: radial-gradient(circle, #5a3cff, transparent 70%);
  animation: float1 22s ease-in-out infinite;
}
.blob-2 {
  width: 480px; height: 480px;
  top: 40%; right: -140px;
  background: radial-gradient(circle, #d65cff, transparent 70%);
  opacity: 0.35;
  animation: float2 26s ease-in-out infinite;
}
.blob-3 {
  width: 420px; height: 420px;
  bottom: -120px; left: 30%;
  background: radial-gradient(circle, #58d6ff, transparent 70%);
  opacity: 0.2;
  animation: float3 30s ease-in-out infinite;
}
@keyframes float1 { 0%,100%{transform:translate(0,0);} 50%{transform:translate(60px,40px);} }
@keyframes float2 { 0%,100%{transform:translate(0,0);} 50%{transform:translate(-50px,30px);} }
@keyframes float3 { 0%,100%{transform:translate(0,0);} 50%{transform:translate(40px,-30px);} }

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black 30%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black 30%, transparent 85%);
}

/* ================================================================
   HEADER
   ================================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-4) clamp(var(--space-4), 4vw, var(--space-10));
  background: color-mix(in oklab, var(--color-bg) 70%, transparent);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms ease, background 240ms ease;
}
.site-header.scrolled {
  border-bottom-color: var(--color-border);
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.logo em { color: var(--color-accent); font-style: normal; }

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--text-sm);
}
.site-nav a {
  color: var(--color-text-muted);
  font-weight: 500;
  position: relative;
}
.site-nav a:hover { color: var(--color-text); }
.site-nav a.nav-cta {
  padding: 0.55rem var(--space-4);
  border-radius: var(--radius-full);
  background: var(--grad);
  color: #0b0814;
  font-weight: 600;
}
.site-nav a.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.menu-btn {
  display: none;
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  position: relative;
}
.menu-btn span {
  position: absolute;
  left: 10px; right: 10px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 220ms var(--ease-out), opacity 200ms;
}
.menu-btn span:nth-child(1) { top: 13px; }
.menu-btn span:nth-child(2) { top: 19px; }
.menu-btn span:nth-child(3) { top: 25px; }
.menu-btn[aria-expanded='true'] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded='true'] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded='true'] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-nav {
  display: none;
  position: sticky;
  top: 64px;
  z-index: 49;
  flex-direction: column;
  padding: var(--space-4) var(--space-6) var(--space-6);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-3);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: var(--space-3) 0;
  font-weight: 500;
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav a:last-child { border: none; }
.mobile-nav .nav-cta {
  margin-top: var(--space-2);
  background: var(--grad);
  color: #0b0814;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-full);
  text-align: center;
  border: none;
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
  position: relative;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: clamp(var(--space-12), 7vw, var(--space-24)) clamp(var(--space-4), 4vw, var(--space-10)) var(--space-12);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}
.hero-inner { position: relative; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-primary) 14%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-primary) 35%, transparent);
  color: color-mix(in oklab, var(--color-primary) 80%, white);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-6);
}
.pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #8efc8e;
  box-shadow: 0 0 0 0 rgba(142, 252, 142, 0.5);
  animation: pulse 1.8s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(142, 252, 142, 0.5); }
  70% { box-shadow: 0 0 0 10px rgba(142, 252, 142, 0); }
  100% { box-shadow: 0 0 0 0 rgba(142, 252, 142, 0); }
}

.hero-title {
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin-bottom: var(--space-6);
}
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 200%;
  animation: grad-shift 8s ease-in-out infinite;
}
@keyframes grad-shift {
  0%,100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-8);
}
.hero-sub strong { color: var(--color-text); font-weight: 600; }

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn svg { transition: transform var(--transition-interactive); }
.btn-primary {
  background: var(--grad);
  color: #0b0814;
  box-shadow: 0 8px 30px -12px rgba(139, 141, 255, 0.6);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 40px -10px rgba(139, 141, 255, 0.7); }
.btn-primary:hover svg { transform: translateX(3px); }
.btn-ghost {
  background: color-mix(in oklab, var(--color-surface-2) 70%, transparent);
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-ghost:hover { background: var(--color-surface-3); border-color: var(--color-border-strong); }
.btn.full { width: 100%; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-5);
}
.hero-meta .k {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
}
.hero-meta .k .unit {
  font-size: 0.65em;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-left: 2px;
}
.hero-meta .l {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.hero-meta .sep {
  width: 1px;
  height: 32px;
  background: var(--color-border);
}

/* Code card */
.code-card {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(139, 141, 255, 0.05);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-4deg) rotateX(2deg);
  transition: transform 500ms var(--ease-out);
}
.code-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(139, 141, 255, 0.25), transparent 60%);
  pointer-events: none;
}
.code-card:hover { transform: perspective(1200px) rotateY(-1deg) rotateX(0deg); }
.code-head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in oklab, var(--color-bg-deep) 80%, transparent);
}
.code-head span {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-border-strong);
}
.code-head span:nth-child(1) { background: #ff5f57; }
.code-head span:nth-child(2) { background: #febc2e; }
.code-head span:nth-child(3) { background: #28c840; }
.code-head em {
  margin-left: var(--space-3);
  font-style: normal;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.code-card pre {
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: #cfd1f0;
  overflow-x: auto;
}
.c-kw  { color: #b086ff; font-weight: 500; }
.c-str { color: #8ee1ff; }
.c-com { color: #6b6b85; font-style: italic; }
.c-fn  { color: #ffb77b; }

/* Marquee */
.marquee {
  grid-column: 1 / -1;
  margin-top: var(--space-12);
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  display: flex;
  gap: var(--space-6);
}
.marquee .track {
  display: flex;
  gap: var(--space-6);
  flex-shrink: 0;
  animation: scroll 40s linear infinite;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
}
.marquee .track span:nth-child(2n) { color: var(--color-border-strong); }
@keyframes scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-100%); }
}

/* ================================================================
   SECTIONS (common)
   ================================================================ */
.section {
  position: relative;
  max-width: var(--content);
  margin: 0 auto;
  padding: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-4), 4vw, var(--space-10));
}
.section-head {
  max-width: 860px;
  margin-bottom: var(--space-12);
}
.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-primary-hover);
  font-weight: 600;
  margin-bottom: var(--space-3);
}
.section-head h2 {
  font-size: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}
.section-lede {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 62ch;
}
.inline-link {
  color: var(--color-primary-hover);
  border-bottom: 1px dashed color-mix(in oklab, var(--color-primary) 50%, transparent);
}
.inline-link:hover { color: var(--color-text); border-color: var(--color-primary); }

/* ================================================================
   ABOUT
   ================================================================ */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: var(--space-8);
  align-items: start;
}
.about-card {
  padding: var(--space-8);
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.about-card::before {
  content: '';
  position: absolute;
  top: -40%; right: -20%;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(214, 92, 255, 0.15), transparent 70%);
  pointer-events: none;
}
.avatar {
  margin-bottom: var(--space-5);
  display: inline-block;
  border-radius: 50%;
  padding: 3px;
  background: var(--grad);
}
.avatar svg { border-radius: 50%; background: var(--color-bg); padding: 3px; }
.about-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-1);
}
.about-card .role {
  color: var(--color-primary-hover);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.about-body {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  max-width: 56ch;
}
.about-body em { color: var(--color-accent); font-style: normal; font-weight: 600; }
.about-body strong { color: var(--color-text); font-weight: 600; }
.links { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-5); }
.link-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 0.9rem;
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface-3);
  color: var(--color-text);
}
.link-pill:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-hover);
  transform: translateY(-1px);
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
.stat {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--color-surface) 80%, transparent);
  backdrop-filter: blur(8px);
  transition: border-color 240ms, transform 300ms;
}
.stat:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.stat .n {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1rem + 3vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: var(--space-1);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.stat .n .suffix { font-size: 0.7em; }
.stat .t {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* ================================================================
   EXPERIENCE TIMELINE
   ================================================================ */
.experience {
  position: relative;
}
.exp-timeline {
  list-style: none;
  position: relative;
  margin-left: 8px;
  padding-left: var(--space-8);
  border-left: 1px dashed var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}
.exp-item {
  position: relative;
  padding: var(--space-6) var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
  transition: border-color 240ms, transform 240ms;
}
.exp-item:hover { border-color: var(--color-primary); transform: translateX(4px); }
.exp-dot {
  position: absolute;
  left: calc(-1 * var(--space-8) - 9px);
  top: var(--space-8);
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
}
.exp-item.current .exp-dot {
  background: var(--grad);
  border-color: transparent;
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--color-primary) 25%, transparent);
}
.exp-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}
.exp-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}
.exp-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--grad);
  color: #0b0814;
}
.exp-role {
  font-size: var(--text-xl);
  margin-bottom: var(--space-1);
  letter-spacing: -0.02em;
}
.exp-company {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary-hover);
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}
.exp-summary {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-5);
  max-width: 70ch;
  line-height: 1.7;
}
.exp-summary strong { color: var(--color-text); font-weight: 600; }
.exp-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
}
.exp-stack li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background: var(--color-surface-3);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* Education row */
.education-row {
  margin-top: var(--space-12);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-5);
}
.edu {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.edu-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary-hover);
  margin-bottom: var(--space-3);
}
.edu h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
  font-weight: 700;
}
.edu p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ================================================================
   PROJECTS
   ================================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}
.project {
  position: relative;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
  overflow: hidden;
  transition: transform 300ms var(--ease-out), border-color 240ms, box-shadow 240ms;
}
.project::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 280ms;
  pointer-events: none;
}
.project:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.project:hover::after { opacity: 1; }
.project.featured {
  grid-column: span 2;
  background:
    linear-gradient(180deg, var(--color-surface-2), var(--color-surface)) padding-box,
    var(--grad) border-box;
  border: 1.5px solid transparent;
  box-shadow: var(--shadow-glow);
}
.project-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-hover);
  margin-bottom: var(--space-4);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  background: color-mix(in oklab, var(--color-primary) 14%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
}
.project h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}
.project.featured h3 { font-size: var(--text-xl); }
.project p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-5);
  line-height: 1.65;
}
.proj-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
}
.proj-stack li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background: var(--color-surface-3);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* ================================================================
   SKILLS
   ================================================================ */
.skills {
  background:
    radial-gradient(ellipse 60% 40% at 50% 0%, rgba(139, 141, 255, 0.08), transparent 60%),
    transparent;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  max-width: none;
  padding-left: clamp(var(--space-4), 4vw, var(--space-10));
  padding-right: clamp(var(--space-4), 4vw, var(--space-10));
}
.skills > * { max-width: var(--content); margin-left: auto; margin-right: auto; }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
}
.skill-col {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: border-color 240ms, transform 240ms;
}
.skill-col:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.skill-col h4 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--color-text);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}
.skill-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.skill-col li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
}
.skill-col li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.6;
}

/* ================================================================
   GITHUB REPOS
   ================================================================ */
.repos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5);
}
.repo {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
  color: var(--color-text);
  transition: transform 300ms var(--ease-out), border-color 240ms, box-shadow 240ms;
  overflow: hidden;
}
.repo:hover { transform: translateY(-3px); border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.repo.featured {
  background:
    linear-gradient(180deg, var(--color-surface-2), var(--color-surface)) padding-box,
    var(--grad) border-box;
  border: 1.5px solid transparent;
  box-shadow: var(--shadow-glow);
}
.repo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.repo-icon {
  width: 24px; height: 24px;
  color: var(--color-primary-hover);
}
.repo-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--grad);
  color: #0b0814;
}
.repo-stars {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.repo h3 {
  font-size: var(--text-lg);
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-primary-hover);
  margin: 0;
}
.repo p {
  flex: 1;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
  margin: 0;
}
.repo-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
}
.repo-foot .lang {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.repo-foot .lang i {
  width: 10px; height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.repo-foot .repo-link {
  font-family: var(--font-mono);
  color: var(--color-primary-hover);
  letter-spacing: 0.02em;
}
.repo:hover .repo-link { color: var(--color-text); }

.github-note {
  margin-top: var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 700px;
  margin-inline: auto;
  line-height: 1.7;
}
.github-note strong { color: var(--color-text); font-weight: 500; }

/* ================================================================
   MENTOR CTA
   ================================================================ */
.mentor-cta-section {
  max-width: var(--content);
  margin: 0 auto;
}
.mentor-card {
  position: relative;
  padding: clamp(var(--space-10), 5vw, var(--space-16));
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, var(--color-surface-2), var(--color-surface)) padding-box,
    var(--grad) border-box;
  border: 1.5px solid transparent;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.mentor-card-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 100% 0%, rgba(214, 92, 255, 0.18), transparent 60%),
    radial-gradient(ellipse 50% 50% at 0% 100%, rgba(88, 214, 255, 0.10), transparent 60%);
  pointer-events: none;
}
.mentor-card-inner {
  position: relative;
  max-width: 820px;
}
.mentor-head {
  font-size: clamp(2rem, 1.2rem + 3vw, 3.25rem);
  letter-spacing: -0.03em;
  margin: var(--space-3) 0 var(--space-5);
  line-height: 1.1;
}
.mentor-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-8);
  line-height: 1.7;
}
.mentor-sub strong { color: var(--color-text); font-weight: 500; }

.mentor-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-8);
}
.mentor-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  font-size: var(--text-sm);
}
.mentor-meta > div { color: var(--color-text-muted); }
.mentor-meta strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ================================================================
   CONTACT
   ================================================================ */
.contact {
  padding-bottom: clamp(var(--space-20), 10vw, var(--space-32));
}
.contact-wrap {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}
.contact-wrap h2 {
  font-size: clamp(2rem, 1.2rem + 2.5vw, 3rem);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}
.contact-lede {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 56ch;
  margin: 0 auto var(--space-10);
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
  text-align: left;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text);
  transition: transform 240ms, border-color 240ms;
}
.contact-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}
.contact-icon {
  width: 44px; height: 44px;
  flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  background: color-mix(in oklab, var(--color-primary) 14%, transparent);
  color: var(--color-primary-hover);
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}
.contact-value {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 500;
  word-break: break-word;
}

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-16) clamp(var(--space-4), 4vw, var(--space-10)) var(--space-8);
  background: var(--color-bg-deep);
}
.foot-grid {
  max-width: var(--content);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 1fr));
  gap: var(--space-10);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--color-border);
}
.site-footer .logo { margin-bottom: var(--space-4); }
.foot-bio {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-width: 42ch;
}
.foot-grid h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}
.foot-grid ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.foot-grid a { color: var(--color-text-muted); font-size: var(--text-sm); }
.foot-grid a:hover { color: var(--color-primary-hover); }

.foot-bottom {
  max-width: var(--content);
  margin: var(--space-6) auto 0;
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  flex-wrap: wrap;
}

/* ================================================================
   SCROLL REVEAL (CLS-safe: opacity only)
   ================================================================ */
.reveal { opacity: 1; }
@supports (animation-timeline: view()) {
  .reveal {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 60%;
  }
}
@keyframes reveal-fade { to { opacity: 1; } }
.js-reveal { opacity: 0; transform: translateY(12px); transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); }
.js-reveal.visible { opacity: 1; transform: translateY(0); }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: clamp(var(--space-8), 8vw, var(--space-16));
  }
  .code-card { transform: none; order: 2; }
  .about-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .project.featured { grid-column: span 1; }
}

@media (max-width: 720px) {
  .site-nav { display: none; }
  .menu-btn { display: block; }
  .hero-title { letter-spacing: -0.025em; }
  .hero-meta { gap: var(--space-3); }
  .hero-meta .sep { display: none; }
  .foot-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .foot-bottom { flex-direction: column; gap: var(--space-2); }
  .stats { grid-template-columns: 1fr 1fr; }
  .code-card pre { font-size: 0.75rem; padding: var(--space-4); }
  .exp-timeline { padding-left: var(--space-6); }
  .exp-dot { left: calc(-1 * var(--space-6) - 9px); top: var(--space-6); }
  .exp-item { padding: var(--space-5) var(--space-6); }
  .mentor-cta-row { gap: var(--space-5); }
  .mentor-meta { gap: var(--space-4); }
}

@media (max-width: 420px) {
  .stats { grid-template-columns: 1fr; }
}