/* Buddhadeb Mondal — AI Architect portfolio · Night lab + Light clinic */
:root {
  --bg: #070b0a;
  --bg-elevated: #101816;
  --bg-soft: #182420;
  --ink: #eaf3ee;
  --ink-muted: #8fa89a;
  --accent: #2fd4a1;
  --accent-hot: #e8a54b;
  --accent-cool: #5ec4c0;
  --line: rgba(232, 240, 235, 0.12);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --glow: rgba(47, 212, 161, 0.22);
  --glow-hot: rgba(232, 165, 75, 0.18);
  --blueprint: rgba(47, 212, 161, 0.35);
  --radius: 16px;
  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Sora", "Segoe UI", sans-serif;
  --max: 1760px;
  --page-gutter: 1.25rem;
  --nav-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --noise-opacity: 0.28;
}

/* Light theme — cool clinic clarity (paired with Night lab) */
html[data-theme="light"] {
  --bg: #f4f8f6;
  --bg-elevated: #ffffff;
  --bg-soft: #e7f0eb;
  --ink: #0f1c18;
  --ink-muted: #4d6358;
  --accent: #0d8f68;
  --accent-hot: #c47a1a;
  --accent-cool: #0f7a76;
  --line: rgba(15, 28, 24, 0.1);
  --shadow: 0 16px 40px rgba(15, 28, 24, 0.07);
  --glow: rgba(13, 143, 104, 0.12);
  --glow-hot: rgba(196, 122, 26, 0.1);
  --blueprint: rgba(13, 143, 104, 0.28);
  --noise-opacity: 0.12;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 1000;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  background: var(--accent);
  color: #06110c;
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 1rem;
  outline: 2px solid var(--accent-hot);
  outline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
textarea:focus:not(:focus-visible) {
  outline: none;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 500px at 10% -10%, var(--glow), transparent 55%),
    radial-gradient(700px 420px at 95% 5%, var(--glow-hot), transparent 50%),
    radial-gradient(600px 400px at 70% 90%, color-mix(in srgb, var(--accent-cool) 18%, transparent), transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-elevated) 100%);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.45'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  pointer-events: none;
}

html[data-theme="light"] body::after {
  mix-blend-mode: multiply;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-wrap {
  width: min(var(--max), calc(100% - (var(--page-gutter) * 2)));
  max-width: 100%;
  margin-inline: auto;
  padding-inline: 0;
}

/* Near full-bleed on wide desktops only (not phone/tablet landscape) */
@media (min-width: 1200px) {
  :root {
    --max: 1880px;
    --page-gutter: 1.5rem;
  }
}

@media (min-width: 1600px) {
  :root {
    --max: 1960px;
    --page-gutter: 2rem;
  }
}

/* Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px) saturate(1.2);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 12%, var(--line));
  box-shadow: 0 8px 30px color-mix(in srgb, var(--bg) 40%, transparent);
}

.site-nav {
  position: relative;
  min-height: var(--nav-h);
  height: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0;
  flex-wrap: nowrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
  border-radius: 12px;
  transition: transform 0.25s var(--ease), filter 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.brand:hover {
  transform: translateY(-1px);
  filter: brightness(1.06);
  box-shadow: 0 0 28px color-mix(in srgb, #b57bff 28%, transparent);
}

.brand-logo {
  display: block;
  height: 56px;
  width: auto;
  max-width: min(220px, 48vw);
  border-radius: 12px;
  object-fit: contain;
}

.brand span {
  color: var(--accent);
}

.nav-links {
  counter-reset: nav-item;
  display: flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.3rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--line));
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--bg-soft) 88%, transparent), color-mix(in srgb, var(--bg-elevated) 72%, transparent)),
    repeating-linear-gradient(
      90deg,
      color-mix(in srgb, var(--blueprint) 16%, transparent) 0 1px,
      transparent 1px 12px
    );
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--ink) 7%, transparent),
    0 0 36px color-mix(in srgb, var(--accent) 10%, transparent);
}

.nav-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.48rem 0.82rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--ink-muted);
  white-space: nowrap;
  transition:
    color 0.25s var(--ease),
    background 0.25s var(--ease),
    box-shadow 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.nav-links a::before {
  content: counter(nav-item, decimal-leading-zero);
  counter-increment: nav-item;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--accent) 55%, var(--ink-muted));
  transition: color 0.25s var(--ease), text-shadow 0.25s var(--ease);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0.82rem;
  right: 0.82rem;
  bottom: 0.28rem;
  height: 1px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-cool));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s var(--ease);
  opacity: 0.85;
}

.nav-links a:hover {
  color: var(--ink);
  background: color-mix(in srgb, var(--accent) 9%, var(--bg-soft));
  transform: translateY(-1px);
}

.nav-links a:hover::before,
.nav-links a.is-active::before {
  color: var(--accent);
  text-shadow: 0 0 14px color-mix(in srgb, var(--accent) 45%, transparent);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-links a[aria-current="page"],
.nav-links a.is-active {
  color: var(--ink);
  background: color-mix(in srgb, var(--accent) 16%, var(--bg-soft));
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--accent) 28%, transparent),
    0 0 22px color-mix(in srgb, var(--accent) 22%, transparent);
  font-weight: 600;
}

.nav-links a[aria-current="page"]::after,
.nav-links a.is-active::after {
  transform: scaleX(1);
}

.nav-links:has(a.is-active) a[aria-current="page"]:not(.is-active) {
  color: var(--ink-muted);
  background: transparent;
  box-shadow: none;
  font-weight: 500;
}

.nav-links:has(a.is-active) a[aria-current="page"]:not(.is-active)::after {
  transform: scaleX(0);
}

html[data-theme="light"] .nav-links {
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--bg-elevated) 94%, transparent), color-mix(in srgb, var(--bg-soft) 88%, transparent)),
    repeating-linear-gradient(
      90deg,
      color-mix(in srgb, var(--blueprint) 12%, transparent) 0 1px,
      transparent 1px 12px
    );
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--ink) 4%, transparent),
    0 8px 24px color-mix(in srgb, var(--accent) 8%, transparent);
}

@media (min-width: 1025px) and (max-width: 1320px) {
  .nav-links a {
    padding: 0.42rem 0.62rem;
    font-size: 0.72rem;
    gap: 0.32rem;
  }

  .nav-links a::before {
    font-size: 0.58rem;
  }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Landscape day/night theme toggle (from original site) */
.dark_toggler {
  -webkit-appearance: none;
  appearance: none;
  position: relative;
  cursor: pointer;
  width: 100px;
  height: 40px;
  background-image: url(https://i.postimg.cc/857jHw2q/Screenshot-2020-04-16-at-1-07-06-PM.png);
  background-size: cover;
  border-radius: 50px;
  outline: none;
  border: none;
  transition: background-image 0.9s;
  box-shadow: 0 2px 5px 1px rgba(0, 0, 0, 0.25);
  flex-shrink: 0;
}

.dark_toggler::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 40px;
  width: 40px;
  border-radius: 50px;
  transition: all 0.9s;
  background-color: #f7ca33;
}

.dark_toggler:checked {
  background-image: url(https://i.postimg.cc/Hn0nstVK/Screenshot-2020-04-16-at-1-07-19-PM.png);
  box-shadow: 0 2px 5px 1px rgba(61, 186, 140, 0.35);
}

.dark_toggler:checked::before {
  transform: translateX(60px);
  background-color: #3dba8c;
}

/* Animated CTA buttons */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-start;
  margin-bottom: 1.25rem;
}

.contact-me-btn,
.download-resume-btn {
  position: relative;
  border: none;
  border-radius: 50px;
  padding: 1.05rem 2.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-body);
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background-size: 300% 300%;
  animation: gradientShift 4s ease-in-out infinite;
  text-decoration: none;
  display: inline-block;
}

.contact-me-btn {
  background-image: linear-gradient(135deg, #3dba8c 0%, #5ec4c0 45%, #e8a54b 100%);
  box-shadow:
    0 10px 30px rgba(61, 186, 140, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.download-resume-btn {
  background-image: linear-gradient(135deg, #4facfe 0%, #00f2fe 50%, #3dba8c 100%);
  box-shadow:
    0 10px 30px rgba(79, 172, 254, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.contact-me-btn:hover,
.download-resume-btn:hover {
  transform: translateY(-5px) scale(1.04);
  color: #fff;
  text-decoration: none;
  background-size: 200% 200%;
}

.contact-me-btn:hover {
  box-shadow:
    0 20px 40px rgba(61, 186, 140, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.download-resume-btn:hover {
  box-shadow:
    0 20px 40px rgba(79, 172, 254, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-text {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
}

.btn-text i {
  font-size: 1.15rem;
  transition: transform 0.3s ease;
}

.contact-me-btn:hover .btn-text i {
  transform: translateX(5px) rotate(15deg);
}

.download-resume-btn:hover .btn-text i {
  transform: translateY(-3px) rotate(-10deg);
}

.btn-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.6s ease;
  z-index: 2;
}

.contact-me-btn:hover .btn-shine,
.download-resume-btn:hover .btn-shine {
  left: 100%;
}

.btn-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.btn-particles .particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  animation: particleFloat 3s ease-in-out infinite;
}

.btn-particles .particle:nth-child(1) { top: 20%; left: 20%; animation-duration: 2.5s; }
.btn-particles .particle:nth-child(2) { top: 30%; right: 25%; animation-delay: 0.5s; }
.btn-particles .particle:nth-child(3) { bottom: 25%; left: 30%; animation-delay: 1s; }
.btn-particles .particle:nth-child(4) { bottom: 20%; right: 20%; animation-delay: 1.5s; }
.btn-particles .particle:nth-child(5) { top: 50%; left: 10%; animation-delay: 2s; }

.contact-me-btn::before,
.download-resume-btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.6s ease;
  z-index: 0;
}

.contact-me-btn:hover::before,
.download-resume-btn:hover::before {
  width: 300px;
  height: 300px;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes particleFloat {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.6; }
  50% { transform: translateY(-10px) scale(1.2); opacity: 1; }
}

@media (max-width: 520px) {
  .contact-me-btn,
  .download-resume-btn {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
  }

  .dark_toggler {
    width: 80px;
    height: 34px;
  }

  .dark_toggler::before {
    height: 34px;
    width: 34px;
  }

  .dark_toggler:checked::before {
    transform: translateX(46px);
  }
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.05rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-cool));
  color: #06110c;
  font-weight: 600;
  font-size: 0.88rem;
  box-shadow: 0 0 24px color-mix(in srgb, var(--accent) 35%, transparent);
  transition: transform 0.25s var(--ease), filter 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.nav-cta:hover {
  transform: translateY(-1px);
  filter: brightness(1.06);
  box-shadow: 0 0 32px color-mix(in srgb, var(--accent) 50%, transparent);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--ink);
  cursor: pointer;
  font-size: 1.25rem;
  flex-shrink: 0;
  place-items: center;
}

/* Tablet + phone: hamburger nav */
@media (max-width: 1024px) {
  .nav-toggle {
    display: grid;
    order: 3;
  }

  .nav-actions {
    order: 2;
    margin-left: auto;
  }

  .brand {
    order: 1;
  }

  .brand-logo {
    height: 48px;
    max-width: min(180px, 52vw);
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.55rem;
    counter-reset: nav-item;
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--bg-elevated) 96%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line));
    box-shadow: var(--shadow);
    display: none;
    z-index: 120;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 0.85rem 1rem;
    font-size: 0.92rem;
    border-radius: 12px;
    min-height: 44px;
    border-bottom: none;
  }

  .nav-links a::after {
    left: 1rem;
    right: auto;
    width: 2rem;
    bottom: 0.55rem;
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .nav-actions .nav-cta {
    display: none;
  }

  .dark_toggler {
    width: 72px;
    height: 32px;
  }

  .dark_toggler::before {
    width: 32px;
    height: 32px;
  }

  .dark_toggler:checked::before {
    transform: translateX(40px);
  }
}

/* Hero */
.hero-stage {
  position: relative;
  overflow: hidden;
  padding: 0.5rem 0 1.5rem;
}

.hero-stage-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 12% 10%, var(--glow), transparent 60%),
    radial-gradient(700px 480px at 88% 20%, var(--glow-hot), transparent 55%),
    radial-gradient(600px 400px at 70% 100%, color-mix(in srgb, var(--accent-cool) 16%, transparent), transparent 60%);
}

.hero-stage-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 14%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 14%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 10%, transparent 72%);
  opacity: 0.45;
}

.hero-stage-bg::after {
  content: "";
  position: absolute;
  width: 42%;
  height: 70%;
  right: 4%;
  top: 8%;
  background: radial-gradient(circle at 50% 40%, var(--glow), transparent 68%);
  filter: blur(40px);
  opacity: 0.7;
}

.hero-stage .hero {
  position: relative;
  z-index: 1;
}

.hero {
  width: min(var(--max), calc(100% - (var(--page-gutter) * 2)));
  max-width: var(--max);
  margin-inline: auto;
  min-height: min(82vh, 760px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 440px);
  gap: clamp(1.5rem, 3vw, 2.75rem);
  align-items: center;
  padding: 2.75rem 0 3.25rem;
}

.hero-copy {
  animation: rise 0.9s var(--ease) both;
  max-width: none;
  min-width: 0;
}

.hero-brand {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink);
}

.hero-brand span {
  color: var(--accent);
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
}

.hero-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--glow);
  animation: pulse-dot 2s var(--ease) infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); }
  70% { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.hero h1,
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 4.8vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin: 0 0 1.1rem;
  max-width: none;
  font-weight: 600;
  white-space: nowrap;
}

.hero-title-accent {
  color: var(--accent);
  font-style: italic;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.hero-title .hero-period {
  color: var(--accent-hot);
  font-style: normal;
}

@media (max-width: 700px) {
  .hero-title {
    white-space: normal;
    max-width: 14ch;
    font-size: clamp(2.1rem, 9vw, 2.75rem);
  }
}

.hero-thesis {
  margin: 0 0 0.85rem;
  max-width: 36rem;
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  line-height: 1.45;
  color: color-mix(in srgb, var(--ink) 82%, var(--ink-muted));
  font-weight: 500;
}

.hero-lead {
  margin: 0 0 0.75rem;
  max-width: 38rem;
  font-size: clamp(0.95rem, 1.35vw, 1.05rem);
  line-height: 1.55;
  color: var(--ink-muted);
}

.hero-lead strong {
  color: var(--ink);
  font-weight: 600;
}

.hero-lead-secondary {
  margin-bottom: 1.25rem;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
}

.hero-proof li {
  padding: 0.4rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-elevated) 70%, transparent);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 1.15rem;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.hero-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-hot);
  box-shadow: 0 0 10px var(--glow-hot);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-cool));
  color: #06110c;
}

.btn-secondary {
  border-color: var(--line);
  background: color-mix(in srgb, var(--bg-soft) 70%, transparent);
  color: var(--ink);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

/* Social icons — under hero CTAs (homepage) / footer (other pages) */
.social-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 1.15rem;
}

#contact .social-bar {
  margin-top: 1.25rem;
}

.social-bar a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  text-decoration: none;
  overflow: hidden;
  border: 2px solid color-mix(in srgb, var(--ink) 16%, transparent);
  background: color-mix(in srgb, var(--bg-elevated) 80%, transparent);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  color: var(--ink);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease, border-color 0.4s ease;
  animation: socialIconFloat 6s ease-in-out infinite;
}

.social-bar a:nth-child(1) { animation-delay: 0s; }
.social-bar a:nth-child(2) { animation-delay: 0.45s; }
.social-bar a:nth-child(3) { animation-delay: 0.9s; }
.social-bar a:nth-child(4) { animation-delay: 1.35s; }
.social-bar a:nth-child(5) { animation-delay: 1.8s; }

.social-bar a::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
}

.social-bar a:hover {
  animation-play-state: paused;
  transform: translateY(-5px) scale(1.12);
  border-color: rgba(255, 255, 255, 0.55);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
}

.social-bar a:hover::before {
  opacity: 1;
}

.social-bar a i {
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
  transition: transform 0.35s ease, filter 0.35s ease, color 0.35s ease;
}

.social-bar a:hover i {
  color: #fff;
  transform: scale(1.15);
  filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.45));
}

.social-bar a.linkedin::before { background: linear-gradient(135deg, #0077b5, #004471); }
.social-bar a.github::before { background: linear-gradient(135deg, #333, #1a1e22); }
.social-bar a.twitter::before { background: linear-gradient(135deg, #1da1f2, #0a7bc7); }
.social-bar a.whatsapp::before { background: linear-gradient(135deg, #25d366, #075e54); }
.social-bar a.medium::before { background: linear-gradient(135deg, #00ab6c, #005a3a); }

.social-bar a.linkedin:hover { border-color: #0077b5; box-shadow: 0 8px 25px rgba(0, 119, 181, 0.4); }
.social-bar a.github:hover { border-color: #333; box-shadow: 0 8px 25px rgba(51, 51, 51, 0.35); }
.social-bar a.twitter:hover { border-color: #1da1f2; box-shadow: 0 8px 25px rgba(29, 161, 242, 0.4); }
.social-bar a.whatsapp:hover { border-color: #25d366; box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4); }
.social-bar a.medium:hover { border-color: #00ab6c; box-shadow: 0 8px 25px rgba(0, 171, 108, 0.4); }

.footer-inner .social-bar {
  margin-top: 0;
  justify-content: center;
}

@keyframes socialIconFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

/* Animated agent-loop diagram */
.diagram-orbit {
  transform-box: fill-box;
  transform-origin: center;
  animation: diagram-spin 26s linear infinite;
}

.diagram-orbit-inner {
  animation: diagram-spin 18s linear infinite reverse;
}

.diagram-halo {
  transform-box: fill-box;
  transform-origin: center;
  opacity: 0;
  animation: diagram-pulse 3.2s var(--ease) infinite;
  animation-delay: var(--halo-delay, 0s);
}

.diagram-packet {
  offset-path: path("M140 52 L212 190 L68 190 Z");
  offset-rotate: 0deg;
  animation: diagram-travel 5.5s linear infinite;
  filter: drop-shadow(0 0 4px var(--accent-hot));
}

@keyframes diagram-spin {
  to { transform: rotate(360deg); }
}

@keyframes diagram-pulse {
  0% { opacity: 0.7; transform: scale(1); }
  60% { opacity: 0; transform: scale(1.6); }
  100% { opacity: 0; transform: scale(1.6); }
}

@keyframes diagram-travel {
  from { offset-distance: 0%; }
  to { offset-distance: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .social-bar a,
  .hero-pulse,
  .skill-diagram::before,
  .diagram-orbit,
  .diagram-orbit-inner,
  .diagram-halo,
  .diagram-packet {
    animation: none;
  }
  .diagram-halo { opacity: 0; }
  .brand,
  .brand:hover {
    transform: none;
    transition: none;
  }
}

.hero-visual {
  position: relative;
  isolation: isolate;
  width: 100%;
  max-width: 440px;
  justify-self: end;
  animation: rise 1.1s var(--ease) 0.15s both;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: -10% -16% -8% -6%;
  z-index: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 72% 70% at 58% 42%, #000 18%, transparent 78%);
  opacity: 0.65;
  pointer-events: none;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 8% -6% -6% 8%;
  background: linear-gradient(145deg, var(--glow), var(--glow-hot));
  filter: blur(32px);
  z-index: 0;
  opacity: 0.85;
  pointer-events: none;
}

.hero-frame {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border-radius: 28px 28px 10px 28px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) 10%, transparent),
    0 28px 70px color-mix(in srgb, var(--accent) 16%, transparent),
    var(--shadow);
  aspect-ratio: 4 / 5;
  background: var(--bg-soft);
}

.hero-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transform: scale(1.02);
  transition: transform 1.2s var(--ease);
}

.hero-visual:hover .hero-frame img {
  transform: scale(1.05);
}

.hero-frame-caption {
  position: absolute;
  left: 1.1rem;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 2;
  display: grid;
  gap: 0.2rem;
  padding: 0.85rem 1rem;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(12px);
}

.hero-frame-caption span {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
}

.hero-frame-caption strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 1.5rem;
  }

  .hero-visual {
    order: -1;
    max-width: 360px;
    margin-inline: auto;
  }
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 2rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
}

.section-head p {
  margin: 0;
  color: var(--ink-muted);
  max-width: 36rem;
}

.section-link {
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  counter-reset: work;
}

@media (max-width: 900px) {
  .work-grid {
    grid-template-columns: 1fr;
  }
}

.work-item {
  --work-n: counter(work);
  counter-increment: work;
  position: relative;
  display: block;
  padding: 1.5rem 1.45rem 1.4rem;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--line));
  border-radius: var(--radius);
  background:
    linear-gradient(165deg, color-mix(in srgb, var(--accent) 10%, var(--bg-elevated)), var(--bg-elevated) 55%),
    color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.work-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-hot));
  opacity: 0.85;
}

.work-item::after {
  content: "0" counter(work);
  position: absolute;
  right: 1rem;
  top: 0.85rem;
  font-family: var(--font-display);
  font-size: 2.4rem;
  line-height: 1;
  letter-spacing: -0.04em;
  color: color-mix(in srgb, var(--accent) 22%, transparent);
  pointer-events: none;
}

.work-item:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  box-shadow: 0 22px 50px color-mix(in srgb, var(--accent) 16%, transparent);
}

.work-item .tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.85rem;
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
}

.work-item h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0 0 0.65rem;
  letter-spacing: -0.02em;
  max-width: 18ch;
  position: relative;
  z-index: 1;
}

.work-item p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
  position: relative;
  z-index: 1;
}

.work-item .outcome {
  margin-top: 1.1rem;
  padding-top: 0.95rem;
  border-top: 1px solid color-mix(in srgb, var(--accent) 18%, var(--line));
  font-size: 0.88rem;
  color: var(--ink);
  position: relative;
  z-index: 1;
}

/* Help strip */
.help-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

@media (max-width: 800px) {
  .help-grid {
    grid-template-columns: 1fr;
  }
}

.help-item {
  padding: 1.35rem 1.25rem;
  border-left: 3px solid var(--accent);
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 10%, transparent), transparent);
}

.help-item h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.help-item p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

/* Skills */
.skills-layout {
  display: grid;
  gap: 1.15rem;
}

.skill-bento {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 1.15rem;
  padding: 1.45rem;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  border-radius: calc(var(--radius) + 2px);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--accent) 12%, var(--bg-elevated)), color-mix(in srgb, var(--bg-elevated) 94%, transparent));
  backdrop-filter: blur(14px);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) 8%, transparent),
    0 24px 60px color-mix(in srgb, var(--accent) 12%, transparent);
}

.skill-bento-main > h3 {
  margin: 0 0 1.15rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-cool);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.skill-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0.85rem;
  align-items: start;
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
}

.skill-row:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.skill-row-label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0.15rem 0 0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.skill-row-label i {
  color: var(--accent);
  width: 1rem;
  text-align: center;
}

.skill-diagram {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 280px;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
  background:
    radial-gradient(circle at 50% 42%, var(--glow), transparent 52%),
    radial-gradient(circle at 70% 70%, var(--glow-hot), transparent 45%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg-soft) 70%, transparent), var(--bg));
  overflow: hidden;
  box-shadow: inset 0 0 40px color-mix(in srgb, var(--accent) 10%, transparent);
}

.skill-diagram::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, color-mix(in srgb, var(--accent) 45%, transparent) 1px, transparent 1.5px);
  background-size: 16px 16px;
  opacity: 0.45;
  pointer-events: none;
  animation: grid-drift 18s linear infinite;
}

@keyframes grid-drift {
  to { background-position: 16px 16px; }
}

.skill-diagram svg {
  position: relative;
  z-index: 1;
  width: min(100%, 280px);
  height: auto;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.15rem;
  align-items: stretch;
}

.skill-block {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  border: 1px solid color-mix(in srgb, var(--accent) 14%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
  backdrop-filter: blur(10px);
  min-height: 100%;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.skill-block:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  box-shadow: 0 16px 36px color-mix(in srgb, var(--accent) 12%, transparent);
}

.skill-block h3 {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.85rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-cool);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.skill-block h3 i {
  color: var(--accent-hot);
  font-size: 0.95rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-content: flex-start;
}

.skill-tags span {
  display: inline-block;
  padding: 0.32rem 0.6rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  font-size: 0.76rem;
  line-height: 1.3;
  color: var(--ink);
  background: color-mix(in srgb, var(--accent) 8%, var(--bg-soft));
}

html[data-theme="light"] .skill-tags span {
  background: color-mix(in srgb, var(--accent) 6%, #fff);
  border-color: color-mix(in srgb, var(--accent) 18%, var(--line));
}

.skill-practice {
  grid-column: 1 / -1;
}

html[data-theme="light"] .skill-bento,
html[data-theme="light"] .skill-block {
  box-shadow: var(--shadow);
}

@media (max-width: 1000px) {
  .skill-bento {
    grid-template-columns: 1fr;
  }

  .skill-diagram {
    min-height: 220px;
  }

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

@media (max-width: 640px) {
  .skill-row {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .skill-bento {
    padding: 1.1rem;
  }
}

/* Experience cards */
.exp-list {
  display: grid;
  gap: 1rem;
}

.exp-card {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1.1rem;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
}

.exp-logo {
  width: 72px;
  height: 72px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  display: grid;
  place-items: center;
}

.exp-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6px;
}

.exp-card-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  margin-bottom: 0.35rem;
}

.exp-card h3 {
  margin: 0;
  font-size: 1.1rem;
  font-family: var(--font-display);
}

.exp-card .role {
  margin: 0;
  color: var(--accent-hot);
  font-weight: 600;
  font-size: 0.92rem;
}

.exp-card time {
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.exp-card ul {
  margin: 0.65rem 0 0.75rem;
  padding-left: 1.1rem;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.exp-card li + li {
  margin-top: 0.25rem;
}

.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.exp-tags span {
  font-size: 0.75rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--ink);
}

@media (max-width: 600px) {
  .exp-card {
    grid-template-columns: 1fr;
  }

  .exp-logo {
    width: 56px;
    height: 56px;
  }
}

/* Education grid */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 700px) {
  .edu-grid {
    grid-template-columns: 1fr;
  }
}

.edu-card {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
}

.edu-card h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.edu-card .school {
  margin: 0;
  color: var(--accent-cool);
  font-size: 0.92rem;
  font-weight: 500;
}

.edu-card .meta {
  margin: 0.35rem 0 0.75rem;
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.edu-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.edu-card li + li {
  margin-top: 0.2rem;
}

.grade {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent-hot) 18%, transparent);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 600;
}

/* Writing / education */
.post-list,
.cred-list {
  display: grid;
  gap: 0.85rem;
}

.post-row,
.cred-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.post-row h3,
.cred-row h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  font-family: var(--font-display);
}

.post-row p,
.cred-row p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.post-row time,
.cred-meta {
  color: var(--ink-muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

/* Contact — soft conference ambience (not a hero portrait) */
.contact-stage {
  position: relative;
  overflow: hidden;
  padding: 4.5rem 0;
}

.contact-stage-bg {
  position: absolute;
  inset: -4%;
  z-index: 0;
  pointer-events: none;
  background:
    url("../images/mocks/mock-conference-ambient-focus.png") 78% 42% / cover no-repeat;
  filter: saturate(0.9) brightness(0.85);
  opacity: 0.55;
}

.contact-stage-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      115deg,
      color-mix(in srgb, var(--bg) 88%, transparent) 0%,
      color-mix(in srgb, var(--bg) 62%, transparent) 48%,
      color-mix(in srgb, var(--bg) 48%, transparent) 100%
    ),
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--bg) 50%, transparent) 0%,
      transparent 30%,
      transparent 70%,
      color-mix(in srgb, var(--bg) 55%, transparent) 100%
    );
}

html[data-theme="light"] .contact-stage-bg {
  opacity: 0.4;
  filter: saturate(0.8) brightness(0.95);
}

html[data-theme="light"] .contact-stage-bg::after {
  background:
    linear-gradient(
      115deg,
      rgba(244, 248, 246, 0.88) 0%,
      rgba(244, 248, 246, 0.55) 50%,
      rgba(244, 248, 246, 0.42) 100%
    ),
    linear-gradient(
      180deg,
      rgba(244, 248, 246, 0.45) 0%,
      transparent 35%,
      transparent 70%,
      rgba(244, 248, 246, 0.5) 100%
    );
}

.contact-stage .site-wrap {
  position: relative;
  z-index: 1;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 2rem;
  padding: 2.15rem;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  border-radius: calc(var(--radius) + 4px);
  background: color-mix(in srgb, var(--bg-elevated) 86%, transparent);
  backdrop-filter: blur(16px) saturate(1.1);
  box-shadow: 0 24px 60px color-mix(in srgb, var(--accent) 12%, transparent);
}

html[data-theme="light"] .contact-panel {
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  color: var(--ink);
}

@media (max-width: 800px) {
  .contact-panel {
    grid-template-columns: 1fr;
  }
}

.contact-panel h2 {
  font-family: var(--font-display);
  margin: 0 0 0.75rem;
}

.contact-panel p {
  color: var(--ink-muted);
  margin: 0 0 1.25rem;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.contact-links a {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.contact-links a:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.contact-form {
  display: grid;
  gap: 0.85rem;
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.8rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 50%, transparent);
  border-color: var(--accent);
}

.contact-form button {
  justify-self: start;
  cursor: pointer;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--ink-muted);
  font-size: 0.9rem;
  text-align: center;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a:hover {
  color: var(--accent);
}

/* Article / case study */
.page-hero {
  padding: 3rem 0 1.5rem;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0.8rem;
}

.page-hero p {
  color: var(--ink-muted);
  max-width: 42rem;
  margin: 0;
}

.prose {
  max-width: 720px;
  padding: 1rem 0 3rem;
}

.prose h2 {
  font-family: var(--font-display);
  margin: 2rem 0 0.75rem;
}

.prose p,
.prose li {
  color: var(--ink-muted);
}

.prose strong {
  color: var(--ink);
}

.prose ul {
  padding-left: 1.2rem;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0 1.75rem;
  font-size: 0.92rem;
}

.prose th,
.prose td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--bg-soft);
  color: var(--ink);
  font-weight: 600;
}

.prose td {
  color: var(--ink-muted);
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2rem 0;
}

.roadmap-prose {
  max-width: 900px;
  padding-bottom: 3rem;
}

.roadmap-prose h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 0.5rem;
}

.artifact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.artifact-card {
  display: block;
  padding: 1.35rem 1.4rem;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--line));
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--accent) 10%, var(--bg-elevated)), var(--bg-elevated));
  backdrop-filter: blur(10px);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.artifact-card:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  transform: translateY(-4px);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--accent) 14%, transparent);
}

.artifact-card .tag {
  display: inline-block;
  margin-bottom: 0.55rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.artifact-card h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.artifact-card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.contact-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.75rem 0 0.25rem;
  padding: 0.85rem 1.15rem;
  border-radius: 10px;
  background: var(--accent);
  color: #06110c;
  font-weight: 600;
  text-decoration: none;
}

.contact-primary:hover {
  filter: brightness(1.06);
}

.metric-slots {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.55rem;
}

.metric-slots li {
  padding: 0.65rem 0.85rem;
  border: 1px dashed var(--line);
  border-radius: 10px;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.metric-slots strong {
  color: var(--ink);
}

@media (max-width: 900px) {
  .artifact-grid {
    grid-template-columns: 1fr;
  }

  .prose table {
    display: block;
    overflow-x: auto;
  }
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

@media (max-width: 700px) {
  .stat-row {
    grid-template-columns: 1fr;
  }
}

.stat {
  padding: 1rem;
  border-top: 2px solid var(--accent);
}

.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.stat span {
  color: var(--ink-muted);
  font-size: 0.88rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* References (merged into About) */
.ref-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.15rem;
  padding: 0 0 3.5rem;
}

@media (max-width: 800px) {
  .ref-grid {
    grid-template-columns: 1fr;
  }
}

.ref-card {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1rem;
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
}

.ref-card img {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid color-mix(in srgb, var(--accent) 40%, var(--line));
}

.ref-card h3 {
  margin: 0 0 0.2rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.ref-card .ref-role {
  margin: 0 0 0.75rem;
  color: var(--accent-cool);
  font-size: 0.88rem;
  font-weight: 500;
}

.ref-card blockquote {
  margin: 0;
  padding: 0;
  border: none;
  color: var(--ink-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.ref-card blockquote::before {
  content: "“";
  color: var(--accent-hot);
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 0;
  margin-right: 0.15rem;
}

.about-prose {
  max-width: none;
  padding-bottom: 1rem;
}

.about-prose h2 {
  margin-top: 2.25rem;
}

/* About page — full-width editorial */
.about-stage {
  position: relative;
  overflow: hidden;
  padding: 3.5rem 0 3rem;
}

.about-stage-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(700px 420px at 12% 20%, var(--glow), transparent 60%),
    radial-gradient(560px 380px at 88% 30%, var(--glow-hot), transparent 55%),
    radial-gradient(480px 360px at 55% 100%, color-mix(in srgb, var(--accent-cool) 22%, transparent), transparent 60%);
}

.about-stage-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 16%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 16%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 75% 70% at 40% 40%, #000 15%, transparent 75%);
}

.about-hero {
  position: relative;
  z-index: 1;
  max-width: none;
}

.about-eyebrow {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.about-eyebrow span {
  color: var(--accent);
}

.about-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0 0 1.25rem;
  color: var(--ink);
}

.about-title-accent {
  color: var(--accent);
  font-style: italic;
  font-weight: 500;
}

.about-manifesto {
  margin: 0 0 1.75rem;
  max-width: 46rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: color-mix(in srgb, var(--ink) 88%, var(--ink-muted));
}

.about-manifesto em {
  color: var(--accent-hot);
  font-style: italic;
}

.about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.about-chip {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
}

.about-chip-teal {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
}

.about-chip-gold {
  color: var(--accent-hot);
  background: color-mix(in srgb, var(--accent-hot) 14%, transparent);
  border-color: color-mix(in srgb, var(--accent-hot) 35%, var(--line));
}

.about-chip-cool {
  color: var(--accent-cool);
  background: color-mix(in srgb, var(--accent-cool) 14%, transparent);
  border-color: color-mix(in srgb, var(--accent-cool) 35%, var(--line));
}

.about-chip-ink {
  color: var(--ink);
  background: color-mix(in srgb, var(--bg-soft) 80%, transparent);
  border-color: var(--line);
}

.about-num {
  display: inline-block;
  margin-right: 0.45rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  vertical-align: middle;
}

.about-story {
  padding-top: 1.5rem;
}

.about-story-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.75fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}

.about-story-main h2,
.about-pillars .section-head h2,
.about-stack .section-head h2,
.about-edu .section-head h2,
.about-refs .section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

.about-story-main p {
  margin: 0 0 1.1rem;
  max-width: none;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink-muted);
}

.about-story-main strong {
  color: var(--ink);
}

.about-hl {
  font-weight: 600;
}

.about-hl-teal { color: var(--accent); }
.about-hl-gold { color: var(--accent-hot); }
.about-hl-cool { color: var(--accent-cool); }

.about-pull {
  position: relative;
  padding: 1.75rem 1.5rem;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid color-mix(in srgb, var(--accent-hot) 40%, var(--line));
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--accent-hot) 16%, var(--bg-elevated)), var(--bg-elevated));
  box-shadow: 0 20px 50px color-mix(in srgb, var(--accent-hot) 12%, transparent);
}

.about-pull-mark {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 1.1rem;
}

.about-pull blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--ink);
  border: none;
  padding: 0;
}

.about-pull blockquote span {
  display: inline-block;
  margin-top: 0.65rem;
  color: var(--accent-cool);
  font-style: italic;
}

.about-pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.15rem;
}

.about-pillar {
  padding: 1.5rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  min-height: 100%;
}

.about-pillar h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.about-pillar p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.about-pillar-a {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  background: linear-gradient(165deg, color-mix(in srgb, var(--accent) 14%, var(--bg-elevated)), var(--bg-elevated));
}

.about-pillar-a h3 { color: var(--accent); }

.about-pillar-b {
  border-color: color-mix(in srgb, var(--accent-hot) 40%, var(--line));
  background: linear-gradient(165deg, color-mix(in srgb, var(--accent-hot) 14%, var(--bg-elevated)), var(--bg-elevated));
}

.about-pillar-b h3 { color: var(--accent-hot); }

.about-pillar-c {
  border-color: color-mix(in srgb, var(--accent-cool) 40%, var(--line));
  background: linear-gradient(165deg, color-mix(in srgb, var(--accent-cool) 14%, var(--bg-elevated)), var(--bg-elevated));
}

.about-pillar-c h3 { color: var(--accent-cool); }

.about-stack-bands {
  display: grid;
  gap: 0.85rem;
}

.about-band {
  padding: 1.25rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.about-band h3 {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}

.about-band p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.about-band-teal {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
  background: color-mix(in srgb, var(--accent) 8%, var(--bg-elevated));
}
.about-band-teal h3 { color: var(--accent); }

.about-band-gold {
  border-color: color-mix(in srgb, var(--accent-hot) 35%, var(--line));
  background: color-mix(in srgb, var(--accent-hot) 8%, var(--bg-elevated));
}
.about-band-gold h3 { color: var(--accent-hot); }

.about-band-cool {
  border-color: color-mix(in srgb, var(--accent-cool) 35%, var(--line));
  background: color-mix(in srgb, var(--accent-cool) 8%, var(--bg-elevated));
}
.about-band-cool h3 { color: var(--accent-cool); }

.about-band-ink {
  border-color: var(--line);
  background: var(--bg-elevated);
}
.about-band-ink h3 { color: var(--ink); }

.about-edu-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-edu-row li {
  padding: 1.15rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elevated) 90%, transparent);
  color: var(--ink-muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.about-edu-row li:nth-child(3n + 1) {
  border-color: color-mix(in srgb, var(--accent) 30%, var(--line));
}
.about-edu-row li:nth-child(3n + 2) {
  border-color: color-mix(in srgb, var(--accent-hot) 30%, var(--line));
}
.about-edu-row li:nth-child(3n) {
  border-color: color-mix(in srgb, var(--accent-cool) 30%, var(--line));
}

.about-edu-row strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 0.2rem;
}

.about-edu-row em {
  color: var(--accent);
  font-style: italic;
}

.about-refs .section-head a {
  color: var(--accent);
}

.about-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0 0 3.5rem;
  margin: 0;
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 50%, var(--line));
}

.btn-ghost:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

@media (max-width: 900px) {
  .about-story-grid,
  .about-pillar-grid,
  .about-edu-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .about-title {
    font-size: clamp(2.4rem, 12vw, 3.2rem);
  }

  .about-manifesto {
    font-size: 1.15rem;
  }
}

/* Desktop-only density (not tablets / phone landscape) */
@media (min-width: 1200px) {
  .hero {
    gap: clamp(1.5rem, 3vw, 2.75rem);
    padding: 1.5rem 0 2rem;
    grid-template-columns: minmax(0, 1.25fr) minmax(340px, 460px);
  }

  .hero-visual {
    max-width: 460px;
  }

  .hero-thesis,
  .hero-lead {
    max-width: min(44rem, 100%);
  }

  .hero-lead {
    max-width: min(52rem, 100%);
  }

  .section {
    padding: 2.75rem 0;
  }

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

  .edu-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .work-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .help-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .section-head p {
    max-width: min(52rem, 100%);
  }

  .prose {
    max-width: 900px;
  }
}

@media (min-width: 1600px) {
  .exp-list {
    gap: 1.15rem;
  }
}

/* —— Tablet (portrait & landscape) —— */
@media (max-width: 1199px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding: 1.25rem 0 2rem;
    min-height: auto;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2rem, 5.5vw, 3rem);
  }

  .hero-visual {
    order: -1;
    max-width: 420px;
    margin-inline: auto;
    width: 100%;
  }

  .section {
    padding: 2.75rem 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .work-grid,
  .help-grid,
  .edu-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .contact-panel {
    grid-template-columns: 1fr;
    padding: 1.5rem;
  }

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

/* —— Phone —— */
@media (max-width: 640px) {
  :root {
    --nav-h: 60px;
    --page-gutter: 1rem;
  }

  .site-wrap {
    width: calc(100% - 2rem);
  }

  .hero {
    padding: 0.75rem 0 1.5rem;
  }

  .hero h1 {
    font-size: clamp(1.85rem, 8vw, 2.35rem);
    line-height: 1.12;
  }

  .hero-thesis {
    font-size: 1.02rem;
  }

  .hero-lead {
    font-size: 0.92rem;
  }

  .hero-visual {
    max-width: 300px;
  }

  .hero-frame-caption strong {
    font-size: 0.95rem;
  }

  .cta-row {
    flex-direction: column;
    width: 100%;
    margin-bottom: 0.75rem;
  }

  .contact-me-btn,
  .download-resume-btn {
    width: 100%;
    justify-content: center;
    padding: 1rem 1.25rem;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
  }

  .section {
    padding: 2.25rem 0;
  }

  .section-head h2 {
    font-size: 1.65rem;
  }

  .work-grid,
  .help-grid,
  .edu-grid,
  .exp-list {
    grid-template-columns: 1fr;
  }

  .skill-block,
  .work-item,
  .edu-card,
  .exp-card {
    padding: 1.1rem;
  }

  .exp-card {
    grid-template-columns: 56px 1fr;
  }

  .exp-logo {
    width: 56px;
    height: 56px;
  }

  .contact-panel {
    padding: 1.15rem;
    border-radius: var(--radius);
  }

  .contact-form button,
  .btn {
    width: 100%;
  }

  .social-bar {
    justify-content: flex-start;
  }

  .social-bar a {
    width: 44px;
    height: 44px;
  }

  .page-hero {
    padding: 1.75rem 0 1rem;
  }

  .page-hero h1 {
    font-size: 1.85rem;
  }

  .stat-row {
    grid-template-columns: 1fr;
  }

  .prose {
    padding-bottom: 2rem;
  }
}

/* Short phones / landscape phone */
@media (max-height: 500px) and (orientation: landscape) {
  .hero-visual {
    max-width: 180px;
  }

  .section {
    padding: 1.75rem 0;
  }
}

body.nav-open {
  overflow: hidden;
}

img,
video {
  max-width: 100%;
  height: auto;
}

.contact-form input,
.contact-form textarea,
.contact-form button {
  font-size: 16px; /* prevents iOS zoom on focus */
}