/* =========================================================
   Yogi Gawade — Personal Homepage
   Concept: Clean / modern / engineered. Warm neutral palette,
   deep teal accent (engineering + trust), Cabinet Grotesk
   display + Satoshi body + JetBrains Mono for spec-like labels.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root,
[data-theme='light'] {
  /* Surfaces */
  --color-bg:            #F5F2EC;
  --color-surface:       #FAF8F3;
  --color-surface-2:     #FFFFFF;
  --color-surface-offset:#EDE8E0;
  --color-surface-dynamic:#E4DFD5;
  --color-divider:       #DBD6CB;
  --color-border:        #CFC9BC;

  /* Text */
  --color-text:          #1B1F1E;
  --color-text-muted:    #5E625E;
  --color-text-faint:    #9B9A92;
  --color-text-inverse:  #F7F2E7;

  /* Primary — deep engineering teal */
  --color-primary:        #0E4F56;
  --color-primary-hover:  #0A3D43;
  --color-primary-active: #082A2F;
  --color-primary-highlight:#C9DDDC;

  /* Warm accent for featured moments */
  --color-warm:           #B9632C;

  /* Contact section tones */
  --color-deep:           #0C2B2F;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(30, 25, 15, 0.05);
  --shadow-md: 0 6px 20px rgba(30, 25, 15, 0.07);
  --shadow-lg: 0 16px 40px rgba(30, 25, 15, 0.10);

  /* Type scale */
  --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, 1.0625rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1vw, 2rem);
  --text-2xl:  clamp(2rem, 1.2rem + 2vw, 3rem);
  --text-3xl:  clamp(2.5rem, 1rem + 3.5vw, 4.25rem);

  /* Spacing */
  --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;

  /* Widths */
  --content-narrow: 720px;
  --content-default: 1100px;
  --content-wide: 1280px;

  /* 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;
}

[data-theme='dark'] {
  --color-bg:             #111311;
  --color-surface:        #171A18;
  --color-surface-2:      #1C201E;
  --color-surface-offset: #1F2321;
  --color-surface-dynamic:#262B28;
  --color-divider:        #272B29;
  --color-border:         #343834;

  --color-text:           #E6E3DA;
  --color-text-muted:     #9A978E;
  --color-text-faint:     #6A6862;
  --color-text-inverse:   #111311;

  --color-primary:        #5FB1B9;
  --color-primary-hover:  #7AC6CE;
  --color-primary-active: #95DAE1;
  --color-primary-highlight:#1F3A3D;

  --color-warm:           #DB8A56;
  --color-deep:           #050E10;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #111311;
    --color-surface:        #171A18;
    --color-surface-2:      #1C201E;
    --color-surface-offset: #1F2321;
    --color-surface-dynamic:#262B28;
    --color-divider:        #272B29;
    --color-border:         #343834;
    --color-text:           #E6E3DA;
    --color-text-muted:     #9A978E;
    --color-text-faint:     #6A6862;
    --color-text-inverse:   #111311;
    --color-primary:        #5FB1B9;
    --color-primary-hover:  #7AC6CE;
    --color-primary-active: #95DAE1;
    --color-primary-highlight:#1F3A3D;
    --color-warm:           #DB8A56;
    --color-deep:           #050E10;
  }
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  text-size-adjust: none;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img, picture, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }
ul[role='list'] { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p { text-wrap: pretty; max-width: 68ch; }

::selection { background: var(--color-primary-highlight); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

a, button, [role='button'], input, textarea, select {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-10));
}

.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.section-label .label-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem; height: 1.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 11px;
  color: var(--color-primary);
  background: var(--color-surface);
}

.section-title {
  font-size: var(--text-2xl);
  max-width: 22ch;
  margin-bottom: var(--space-10);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.site-header.scrolled {
  border-bottom-color: var(--color-divider);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-6);
  min-height: 72px;
}
.brand {
  display: inline-flex; align-items: center; gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.brand-mark { color: var(--color-primary); flex-shrink: 0; }
.brand:hover { color: var(--color-primary); }

.site-nav {
  display: none;
  gap: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.site-nav a {
  position: relative;
  padding: var(--space-2) 0;
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-interactive);
}
.site-nav a:hover { color: var(--color-text); }
.site-nav a:hover::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); }

@media (min-width: 960px) { .site-nav { display: flex; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  white-space: nowrap;
  line-height: 1;
}
.btn-sm { padding: var(--space-2) var(--space-4); font-size: 0.8125rem; }
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 7vw, var(--space-20));
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 500px at 85% 0%, color-mix(in oklab, var(--color-primary) 18%, transparent), transparent 70%),
    radial-gradient(ellipse 600px 400px at 15% 100%, color-mix(in oklab, var(--color-warm) 10%, transparent), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: var(--radius-full);
  background: #3a9b5f;
  box-shadow: 0 0 0 4px color-mix(in oklab, #3a9b5f 25%, transparent);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in oklab, #3a9b5f 40%, transparent); }
  50% { box-shadow: 0 0 0 6px color-mix(in oklab, #3a9b5f 0%, transparent); }
}

.hero-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
}
.hero-title em {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-primary);
  font-weight: 500;
}

.hero-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 58ch;
  margin-bottom: var(--space-8);
  line-height: 1.55;
}
.hero-lede strong { color: var(--color-text); font-weight: 600; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}

.hero-meta {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5) var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  max-width: 520px;
}
.hero-meta li { display: flex; flex-direction: column; gap: 2px; }
.meta-k {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-faint);
}
.meta-v { font-size: var(--text-sm); color: var(--color-text); font-weight: 500; }

/* Hero card */
.hero-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  position: relative;
}
.portrait-wrap {
  position: relative;
  width: fit-content;
  margin: 0 auto var(--space-6);
}
.portrait-frame {
  width: 168px;
  height: 168px;
  border-radius: var(--radius-full);
  padding: 4px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-warm));
  position: relative;
}
.portrait {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  object-fit: cover;
  image-rendering: auto;
  background: var(--color-surface-offset);
}
.portrait-badge {
  position: absolute;
  bottom: -6px;
  right: -10px;
  display: inline-flex; align-items: center; gap: 4px;
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-surface-2);
  box-shadow: var(--shadow-sm);
}
.portrait-badge .r { font-size: 0.65rem; margin-left: 1px; }

.card-body { text-align: center; }
.card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.card-name .r { font-size: 0.75rem; color: var(--color-primary); }
.card-headline {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 500;
}
.card-sub {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}
.card-facts {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
  display: grid;
  gap: var(--space-3);
  text-align: left;
}
.card-facts > div { display: flex; justify-content: space-between; gap: var(--space-4); font-size: 0.8125rem; }
.card-facts dt {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.6875rem;
  color: var(--color-text-faint);
  padding-top: 2px;
}
.card-facts dd { color: var(--color-text); font-weight: 500; text-align: right; }

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.35fr 1fr;
    gap: var(--space-20);
  }
  .hero-meta { grid-template-columns: repeat(4, 1fr); max-width: none; }
}

/* ---------- Stats strip ---------- */
.stats {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding-block: var(--space-10);
  border-block: 1px solid color-mix(in oklab, var(--color-primary) 60%, black);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8) var(--space-6);
}
.stat { display: flex; flex-direction: column; gap: var(--space-1); }
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1rem + 2vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: color-mix(in oklab, var(--color-text-inverse) 75%, transparent);
}
@media (min-width: 720px) { .stats-grid { grid-template-columns: repeat(5, 1fr); } }

/* ---------- About ---------- */
.section-about { background: var(--color-bg); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}
.about-copy p { font-size: var(--text-base); color: var(--color-text-muted); margin-bottom: var(--space-5); max-width: 62ch; }
.about-copy p strong { color: var(--color-text); font-weight: 600; }

.pill-group {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin-top: var(--space-6);
}
.pill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  color: var(--color-text);
}
.pill:hover { border-color: var(--color-primary); color: var(--color-primary); }

@media (min-width: 960px) {
  .about-grid { grid-template-columns: 220px 1fr; gap: var(--space-16); align-items: start; }
  .about-grid .section-label { position: sticky; top: 120px; margin-bottom: 0; }
}

/* ---------- Experience / Timeline ---------- */
.section-experience { background: var(--color-surface); border-block: 1px solid var(--color-divider); }

.timeline {
  list-style: none;
  position: relative;
  padding-left: 0;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 7px;
  width: 1px;
  background: linear-gradient(to bottom,
    transparent,
    var(--color-border) 10%,
    var(--color-border) 90%,
    transparent);
}

.tl-item {
  position: relative;
  padding-left: var(--space-10);
  padding-bottom: var(--space-10);
}
.tl-item::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 0;
  width: 15px; height: 15px;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  box-shadow: 0 0 0 4px var(--color-surface);
  transition: all var(--transition-interactive);
}
.tl-item.tl-featured::before {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.tl-item:last-child { padding-bottom: 0; }

.tl-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}
.tl-date { color: var(--color-primary); font-weight: 500; }

.tl-head { margin-bottom: var(--space-3); }
.tl-title {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}
.tl-company {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}
.tl-sep { color: var(--color-text-faint); margin: 0 4px; }

.tl-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.tl-points li {
  position: relative;
  padding-left: var(--space-5);
  max-width: 70ch;
}
.tl-points li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.65em;
  width: 8px; height: 1px;
  background: var(--color-primary);
}
.tl-points strong { color: var(--color-text); font-weight: 600; }

.tl-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 70ch;
}

.tl-featured .tl-body {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

/* ---------- Research ---------- */
.section-research { background: var(--color-bg); }
.research-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}
.research-copy > p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 62ch;
  margin-bottom: var(--space-10);
}

.research-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
.research-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.research-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.rc-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-primary);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-highlight);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}
.research-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.research-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.rc-stack {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.rc-stack li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px var(--space-2);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

@media (min-width: 720px) { .research-cards { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 960px) {
  .research-grid { grid-template-columns: 220px 1fr; gap: var(--space-16); align-items: start; }
  .research-grid .section-label { position: sticky; top: 120px; margin-bottom: 0; }
}

/* ---------- Education ---------- */
.section-education { background: var(--color-surface); border-block: 1px solid var(--color-divider); }

.edu-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
.edu-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.edu-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.edu-featured {
  background: linear-gradient(160deg, var(--color-primary-highlight), var(--color-bg) 60%);
  border-color: var(--color-primary);
  grid-column: 1 / -1;
}

.edu-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.edu-degree {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border-radius: var(--radius-sm);
}
.edu-dates {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}
.edu-school {
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
}
.edu-featured .edu-school { font-size: var(--text-xl); }
.edu-field { font-size: var(--text-sm); color: var(--color-text); font-weight: 500; }
.edu-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}
.edu-note em { font-style: italic; color: var(--color-text); }
.edu-stats {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
  display: flex;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 0.05em;
}

@media (min-width: 720px) { .edu-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .edu-grid { grid-template-columns: repeat(3, 1fr); }
  .edu-featured { grid-column: span 3; }
}

/* ---------- Credentials ---------- */
.section-credentials { background: var(--color-bg); }

.cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
.cert-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.cert-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.cert-featured {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  grid-column: 1 / -1;
}
.cert-featured .cert-issuer,
.cert-featured .cert-id { color: color-mix(in oklab, var(--color-text-inverse) 80%, transparent); }

.cert-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px var(--space-2);
  background: color-mix(in oklab, var(--color-text-inverse) 15%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-text-inverse) 35%, transparent);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.cert-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-2);
  background: var(--color-surface-offset);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.cert-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.cert-featured .cert-date { color: color-mix(in oklab, var(--color-text-inverse) 80%, transparent); }

.cert-name {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.005em;
  font-family: var(--font-display);
}
.cert-featured .cert-name { font-size: var(--text-lg); }
.cert-name .r { font-size: 0.75rem; vertical-align: top; margin-left: 2px; opacity: 0.8; }

.cert-issuer {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}
.cert-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  margin-top: auto;
  padding-top: var(--space-2);
}

@media (min-width: 720px) { .cert-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) {
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .cert-featured { grid-column: span 3; }
}

/* ---------- Affiliations & Languages ---------- */
.section-affiliations { background: var(--color-surface); border-block: 1px solid var(--color-divider); }

.aff-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}
.aff-heading {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.aff-intro {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

/* Memberships */
.mem-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.mem-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}
.mem-item:hover {
  border-color: var(--color-primary);
  transform: translateX(2px);
}
.mem-abbr {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  align-self: start;
}
.mem-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}
.mem-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: 48ch;
}

/* Languages */
.lang-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.lang-item { display: flex; flex-direction: column; gap: var(--space-2); }
.lang-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
}
.lang-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
}
.lang-level {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}
.lang-bar {
  height: 4px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.lang-bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), color-mix(in oklab, var(--color-primary) 70%, var(--color-warm)));
  border-radius: inherit;
}

/* Recognition */
.recog-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.recog-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
}
.recog-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  flex-shrink: 0;
  margin-top: 2px;
}
.recog-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}
.recog-sub {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  max-width: 56ch;
}

@media (min-width: 960px) {
  .aff-grid { grid-template-columns: 1fr 1fr; gap: var(--space-16); }
}

/* ---------- Skills ---------- */
.section-skills { background: var(--color-bg); border-top: 1px solid var(--color-divider); }

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}
.skill-group h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.skill-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.skill-group li {
  font-size: var(--text-sm);
  color: var(--color-text);
  padding: var(--space-2) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  border-bottom: 1px dashed var(--color-divider);
}
.skill-group li:last-child { border-bottom: 0; }
.endorse {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  text-align: right;
}
@media (min-width: 720px) { .skills-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-12); } }

/* ---------- Contact ---------- */
.section-contact {
  background: var(--color-deep);
  color: var(--color-text-inverse);
  position: relative;
  overflow: hidden;
}
.section-contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 700px 400px at 20% 20%, color-mix(in oklab, var(--color-primary) 40%, transparent), transparent 70%),
    radial-gradient(ellipse 600px 400px at 80% 80%, color-mix(in oklab, var(--color-warm) 18%, transparent), transparent 70%);
  pointer-events: none;
}
.contact-inner { position: relative; max-width: 900px; margin: 0 auto; text-align: center; }

.section-label-light {
  color: color-mix(in oklab, var(--color-text-inverse) 75%, transparent);
  justify-content: center;
}
.section-label-light .label-num {
  background: color-mix(in oklab, var(--color-text-inverse) 8%, transparent);
  border-color: color-mix(in oklab, var(--color-text-inverse) 25%, transparent);
  color: var(--color-text-inverse);
}

.contact-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-5);
  max-width: 22ch;
  margin-inline: auto;
  color: var(--color-text-inverse);
}
.contact-lede {
  font-size: var(--text-base);
  color: color-mix(in oklab, var(--color-text-inverse) 75%, transparent);
  max-width: 58ch;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.contact-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  text-align: left;
}
.contact-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: color-mix(in oklab, var(--color-text-inverse) 5%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-text-inverse) 15%, transparent);
  border-radius: var(--radius-lg);
  color: var(--color-text-inverse);
}
.contact-card:not(.contact-static):hover {
  border-color: color-mix(in oklab, var(--color-text-inverse) 35%, transparent);
  background: color-mix(in oklab, var(--color-text-inverse) 10%, transparent);
  transform: translateY(-2px);
}
.cc-icon {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: color-mix(in oklab, var(--color-primary) 40%, transparent);
  border-radius: var(--radius-full);
  color: var(--color-text-inverse);
}
.cc-k {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: color-mix(in oklab, var(--color-text-inverse) 65%, transparent);
}
.cc-v { font-size: var(--text-sm); font-weight: 500; }

@media (min-width: 720px) { .contact-links { grid-template-columns: repeat(3, 1fr); } }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg);
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer-meta { color: var(--color-text-faint); font-family: var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms cubic-bezier(0.16, 1, 0.3, 1), transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- Utility ---------- */
.r { font-feature-settings: 'sups'; }

/* ---------- Hide small-screen nav text, keep smooth ---------- */
@media (max-width: 560px) {
  .header-actions .btn { display: none; }
  .brand-text { display: none; }
}