/* ==========================================================================
   Paul McNeill — Portfolio
   Dark editorial theme. Pure CSS, no frameworks.
   ========================================================================== */

:root {
  --bg: #0a0a0b;
  --bg-raised: #111113;
  --bg-card: #131316;
  --bg-card-hover: #17171b;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #ededee;
  --text-dim: #a8a8ad;
  --text-faint: #6b6b73;
  --accent: #c9f270;
  --accent-dim: rgba(201, 242, 112, 0.18);
  --accent-glow: rgba(201, 242, 112, 0.35);

  --font-display: "Instrument Serif", "Times New Roman", serif;
  --font-body: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --max-w: 1280px;
  --pad-x: clamp(1.25rem, 4vw, 2.5rem);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
}

/* Icons */
.icon { width: 18px; height: 18px; flex: 0 0 auto; stroke-width: 1.8; }
.icon--xs { width: 14px; height: 14px; }
.icon--sm { width: 16px; height: 16px; }
.icon--lg { width: 28px; height: 28px; }

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

::selection { background: var(--accent); color: #0a0a0b; }

/* Scrollbar */
* { scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.12) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 999px; }
*::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.22); }

/* Focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-inline: var(--pad-x);
}

/* Typography helpers */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.25rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0;
}
.section-title em { font-style: italic; color: var(--accent); }

.section-lead {
  color: var(--text-dim);
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  max-width: 56ch;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: -0.005em;
  transition: transform 0.4s var(--ease-spring), background 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a0b;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -10px var(--accent-glow);
}
.btn-outline {
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* Scroll progress */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 200;
  transition: width 0.1s linear;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ==========================================================================
   Nav
   ========================================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: background 0.3s ease, backdrop-filter 0.3s ease, border-color 0.3s ease, padding 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 10, 11, 0.72);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--border);
  padding: 0.85rem 0;
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: -0.01em;
  color: var(--text);
}
.brand .dot { color: var(--accent); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0; padding: 0;
}
.nav__links a {
  font-size: 0.9rem;
  color: var(--text-dim);
  transition: color 0.2s ease;
  position: relative;
}
.nav__links a:hover { color: var(--text); }
.nav__links a.is-active { color: var(--text); }
.nav__links a.is-active:not(.cta)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 1px; background: var(--accent);
}
.nav__links a.cta {
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-pill);
  transition: background 0.3s ease, color 0.3s ease, transform 0.3s var(--ease-spring);
}
.nav__links a.cta:hover {
  background: var(--accent);
  color: #0a0a0b;
  transform: translateY(-1px);
}

.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.nav__toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  position: relative;
}
.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.3s var(--ease-out), top 0.3s ease, bottom 0.3s ease, opacity 0.2s ease;
}
.nav__toggle span::before { top: -6px; }
.nav__toggle span::after { bottom: -6px; }
.nav__toggle.open span { background: transparent; }
.nav__toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav__toggle.open span::after { bottom: 0; transform: rotate(-45deg); }

@media (max-width: 768px) {
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 11, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transform: translateY(-100%);
    transition: transform 0.5s var(--ease-out);
    pointer-events: none;
  }
  .nav__links.open { transform: translateY(0); pointer-events: auto; }
  .nav__links a { font-size: 1.5rem; font-family: var(--font-display); }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6rem;
  padding-bottom: 4rem;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 35%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 35%, transparent 75%);
}
.hero__glow-1, .hero__glow-2 {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}
.hero__glow-1 {
  width: 540px; height: 540px;
  background: radial-gradient(circle, rgba(201,242,112,0.18), transparent 70%);
  top: -120px; right: -100px;
}
.hero__glow-2 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(120, 90, 255, 0.12), transparent 70%);
  bottom: -120px; left: -80px;
}
.hero__inner {
  position: relative;
  z-index: 1;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero__eyebrow,
.hero__title,
.hero__desc,
.hero__ctas,
.hero__stats {
  opacity: 0;
  animation: fadeUp 0.9s var(--ease-out) forwards;
}
.hero__eyebrow { animation-delay: 0.1s; }
.hero__title   { animation-delay: 0.25s; }
.hero__desc    { animation-delay: 0.4s; }
.hero__ctas    { animation-delay: 0.55s; }
.hero__stats   { animation-delay: 0.7s; }

.hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.75rem, 7.5vw, 6rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 1rem 0 1.5rem;
  max-width: 14ch;
}
.hero__title em { font-style: italic; color: var(--accent); }

.hero__desc {
  color: var(--text-dim);
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  max-width: 56ch;
  margin: 0 0 2.25rem;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 4.5rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  max-width: 960px;
}
.hero__stat .num {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2vw, 1.85rem);
  color: var(--text);
  display: block;
  letter-spacing: -0.01em;
}
.hero__stat .lbl {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.35rem;
  display: block;
}

@media (max-width: 768px) {
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
}

/* ==========================================================================
   Marquee
   ========================================================================== */
.marquee {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  padding: 1.5rem 0;
  background: rgba(255,255,255,0.012);
}
.marquee__track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: scroll-x 45s linear infinite;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.marquee__item {
  display: inline-flex;
  align-items: center;
  gap: 3rem;
  white-space: nowrap;
}
.marquee__item::after {
  content: "";
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}
@keyframes scroll-x {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ==========================================================================
   Section base
   ========================================================================== */
.section {
  padding: clamp(5rem, 10vw, 8rem) 0;
  position: relative;
}
.section__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 3.5rem;
  max-width: 920px;
}
.section__head .section-lead { margin: 0; }

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .marquee__track { animation: none; }
}

/* ==========================================================================
   Expertise
   ========================================================================== */
.expertise__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 900px) { .expertise__grid { grid-template-columns: 1fr; } }

.exp-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.5s var(--ease-out), border-color 0.4s ease, background 0.4s ease;
}
.exp-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-out);
}
.exp-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
}
.exp-card:hover::before { transform: scaleX(1); }

.exp-card__icon {
  font-size: 1.75rem;
  width: 48px; height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(201, 242, 112, 0.08);
  margin-bottom: 1.25rem;
}
.exp-card__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
}
.exp-card__desc {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin: 0 0 1.5rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0; margin: 0;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: rgba(255,255,255,0.02);
}
.tag--accent {
  border-color: var(--accent-dim);
  color: var(--accent);
  background: rgba(201,242,112,0.04);
}

/* ==========================================================================
   Projects (bento)
   ========================================================================== */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.25rem;
}
.proj-card {
  grid-column: span 6;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.5s var(--ease-out), border-color 0.4s ease;
  min-height: 360px;
  color: inherit;
  text-decoration: none;
}
.proj-card__placeholder {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background:
    radial-gradient(circle at 30% 30%, rgba(201,242,112,0.10), transparent 60%),
    linear-gradient(135deg, #1a1a1f, #0f0f12);
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--accent);
  letter-spacing: -0.02em;
  opacity: 0.7;
}
.proj-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-dim);
}
.proj-card--lg { grid-column: span 7; }
.proj-card--md { grid-column: span 5; }

.proj-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, #1a1a1f, #0f0f12);
}
.proj-card__media img,
.proj-card__media picture { display: block; width: 100%; height: 100%; }
.proj-card__media img {
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}
.proj-card:hover .proj-card__media img { transform: scale(1.04); }
.proj-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,10,11,0.85));
}

.proj-card__body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.85rem;
}
.proj-card__cat {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.proj-card__title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin: 0;
}
.proj-card__desc {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin: 0;
  flex: 1;
}
.proj-card__footer {
  margin-top: 0.5rem;
}

@media (max-width: 900px) {
  .proj-card,
  .proj-card--lg,
  .proj-card--md { grid-column: span 12; }
}

/* ==========================================================================
   AI / ML showcase
   ========================================================================== */
.aiml {
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.aiml::before, .aiml::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
}
.aiml::before {
  width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(201,242,112,0.10), transparent 70%);
  top: -160px; left: -120px;
}
.aiml::after {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(120,90,255,0.10), transparent 70%);
  bottom: -200px; right: -160px;
}
.aiml__head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
  align-items: end;
  position: relative;
}
@media (max-width: 900px) {
  .aiml__head { grid-template-columns: 1fr; gap: 1.5rem; }
}

.aiml__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  position: relative;
}
@media (max-width: 768px) { .aiml__grid { grid-template-columns: 1fr; } }

.ai-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.5s var(--ease-out), border-color 0.4s ease;
}
.ai-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-dim);
}
.ai-card__num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5vw, 4.5rem);
  line-height: 1;
  color: rgba(201, 242, 112, 0.18);
  letter-spacing: -0.02em;
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
}
.ai-card__title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin: 0 0 0.85rem;
  max-width: 18ch;
}
.ai-card__desc {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin: 0 0 1.5rem;
}

/* ==========================================================================
   About
   ========================================================================== */
.about__grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 4rem;
  align-items: center;
}
@media (max-width: 900px) {
  .about__grid { grid-template-columns: 1fr; gap: 2.5rem; }
}
.about__photo {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--bg-card);
  border: 1px solid var(--border);
  position: relative;
}
.about__photo-stack { position: absolute; inset: 0; }
.about__photo-stack picture { position: absolute; inset: 0; }
.about__photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}
.about__photo-hover { opacity: 0; transition: opacity 0.6s var(--ease-out); }
.about__photo:hover .about__photo-hover { opacity: 1; }
.about__text p { color: var(--text-dim); font-size: 1.02rem; }
.about__text p strong { color: var(--text); font-weight: 600; }
.about__text .btn { margin-top: 1.5rem; }

/* ==========================================================================
   Credentials
   ========================================================================== */
.cred-grid {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 900px) {
  .cred-grid {
    grid-auto-flow: column;
    grid-auto-columns: 78%;
    grid-template-columns: none;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 1rem;
    margin-inline: calc(var(--pad-x) * -1);
    padding-inline: var(--pad-x);
    scrollbar-width: thin;
  }
  .cred-card { scroll-snap-align: start; }
}
.cred-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.4s var(--ease-out), border-color 0.3s ease, background 0.3s ease;
}
.cred-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
}
.cred-card__badge {
  flex: 0 0 56px;
  width: 56px; height: 56px;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.04);
  border-radius: 12px;
  overflow: hidden;
}
.cred-card__badge picture, .cred-card__badge img { width: 100%; height: 100%; object-fit: contain; }
.cred-card__name {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  margin: 0;
  color: var(--text);
  line-height: 1.3;
}
.cred-card__issuer {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  margin: 0.25rem 0 0;
  letter-spacing: 0.02em;
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact { text-align: center; }
.contact__inner { max-width: 720px; margin: 0 auto; }
.contact__title { margin: 0.5rem 0 1rem; }
.contact__lead { color: var(--text-dim); margin: 0 0 2.5rem; }

.contact__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  list-style: none;
  padding: 0; margin: 0;
}
.contact__link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.35rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  color: var(--text);
  font-size: 0.95rem;
  transition: transform 0.4s var(--ease-spring), border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.contact__link svg { width: 18px; height: 18px; }
.contact__link:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 12px 28px -12px var(--accent-glow);
  background: rgba(201,242,112,0.04);
}

/* ==========================================================================
   Post / project case study
   ========================================================================== */
.post__hero {
  padding: 8rem 0 2.5rem;
  position: relative;
}
.post__back {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  transition: color 0.2s ease;
}
.post__back:hover { color: var(--accent); }

.post__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 0.75rem;
  max-width: 22ch;
}
.post__subtitle {
  color: var(--text-dim);
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  max-width: 60ch;
  margin: 0 0 1.75rem;
}
.post__meta {
  display: flex; flex-wrap: wrap; gap: 1.75rem;
  list-style: none; margin: 1.25rem 0 0; padding: 0;
}
.post__meta li { display: flex; flex-direction: column; gap: 0.15rem; }
.post__meta span {
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-faint);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.post__meta strong { font-weight: 500; color: var(--text); }

.post__cta { margin-top: 1.75rem; display: flex; flex-wrap: wrap; gap: 0.6rem; }

.post__cover {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  margin: 0 auto 3rem;
  max-width: 1100px;
}
.post__cover img { width: 100%; height: auto; display: block; }

.post__videos {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0 auto 3rem;
  max-width: 1100px;
}
.post__videos:has(> :nth-child(2)) { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 768px) { .post__videos { grid-template-columns: 1fr !important; } }
.post__video {
  position: relative; aspect-ratio: 16 / 9;
  background: #000; border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
}
.post__video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.post__body { max-width: 880px; }
.post-content {
  color: var(--text-dim);
  font-size: 1.05rem;
  line-height: 1.78;
  max-width: 72ch;
}
.post-content > * + * { margin-top: 1.1em; }
.post-content h1, .post-content h2, .post-content h3, .post-content h4 {
  font-family: var(--font-display); font-weight: 400; color: var(--text);
  letter-spacing: -0.01em; margin-top: 2.5rem; margin-bottom: 0.7rem; line-height: 1.15;
}
.post-content h2 { font-size: clamp(1.6rem, 2.4vw, 2rem); }
.post-content h3 { font-size: 1.35rem; }
.post-content h4 { font-size: 1.1rem; font-family: var(--font-body); font-weight: 600; }
.post-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.post-content code {
  font-family: var(--font-mono); font-size: 0.88em;
  background: rgba(255,255,255,0.06); padding: 0.15em 0.4em; border-radius: 4px;
}
.post-content pre {
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 1rem 1.25rem; border-radius: var(--radius); overflow-x: auto;
  font-size: 0.88em;
}
.post-content pre code { background: transparent; padding: 0; }
.post-content blockquote {
  border-left: 2px solid var(--accent); padding-left: 1.1rem; margin-left: 0;
  color: var(--text-dim); font-style: italic;
}
.post-content img, .post-content picture {
  border-radius: var(--radius); border: 1px solid var(--border);
  margin: 1.4rem 0; max-width: 100%;
}
.post-content ul, .post-content ol { padding-left: 1.4rem; }
.post-content ul li, .post-content ol li { margin: 0.3rem 0; }
.post-content hr { border: 0; border-top: 1px solid var(--border); margin: 2.5rem 0; }
.post-content table {
  width: 100%; border-collapse: collapse; font-size: 0.9rem;
  margin: 1.5rem 0;
}
.post-content th, .post-content td {
  text-align: left; padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border);
}
.post-content th { color: var(--text); font-weight: 600; }

.post__gallery-head { margin: 4rem auto 1.5rem; max-width: 1100px; }
.post__gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.85rem;
  margin: 0 auto 4rem;
  max-width: 1100px;
}
.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  padding: 0;
  cursor: zoom-in;
  transition: transform 0.4s var(--ease-out), border-color 0.3s ease;
}
.gallery-item:hover { transform: translateY(-3px); border-color: var(--accent-dim); }
.gallery-item picture, .gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
}

.post__nav {
  display: flex; justify-content: space-between; gap: 1rem;
  margin: 4rem auto; padding-top: 2rem;
  border-top: 1px solid var(--border);
  max-width: 1100px;
}
.post__nav-link {
  display: flex; flex-direction: column; gap: 0.25rem;
  color: var(--text); transition: color 0.2s ease;
}
.post__nav-link span {
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-faint);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.post__nav-link strong {
  font-family: var(--font-display); font-size: 1.15rem; font-weight: 400;
}
.post__nav-link:hover { color: var(--accent); }
.post__nav-link--next { text-align: right; align-items: flex-end; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(5, 5, 7, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: grid; place-items: center;
  padding: clamp(1rem, 4vw, 3rem);
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s ease;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox__img {
  max-width: 100%; max-height: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.6);
}
.lightbox__close {
  position: absolute; top: 1.25rem; right: 1.25rem;
  width: 44px; height: 44px;
  font-size: 1.6rem;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--text);
  display: grid; place-items: center;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.4s var(--ease-spring);
}
.lightbox__close:hover { border-color: var(--accent); color: var(--accent); transform: rotate(90deg); }

/* Skip link */
.skip-link {
  position: absolute; top: -40px; left: 0;
  background: var(--accent); color: #0a0a0b;
  padding: 0.5rem 0.9rem; border-radius: 0 0 8px 0;
  font-weight: 600; font-size: 0.85rem;
  z-index: 300;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  font-size: 0.85rem;
  color: var(--text-faint);
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer__links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0; padding: 0;
}
.footer__links a { transition: color 0.2s ease; }
.footer__links a:hover { color: var(--accent); }

/* ==========================================================================
   Back to top
   ========================================================================== */
.back-to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  color: var(--text);
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.4s var(--ease-spring), border-color 0.3s ease, color 0.3s ease, background 0.3s ease;
}
.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(201,242,112,0.04);
}

@media (max-width: 600px) {
  body { font-size: 15px; }
  .section { padding: 4.5rem 0; }
  .ai-card { padding: 1.75rem; }
  .exp-card { padding: 1.75rem; }
  .proj-card { min-height: 300px; }
}

/* ==========================================================================
   Phase 2b additions
   ========================================================================== */

/* Site-wide noise overlay */
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background: url("/assets/textures/noise.png") repeat;
  mix-blend-mode: overlay;
}
@media (prefers-reduced-motion: reduce) { body::after { display: none; } }

/* Dot-grid layer for hero — replaces simple line grid look */
.hero__bg {
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.06) 1px, transparent 0),
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 40px 40px, 64px 64px, 64px 64px;
}

/* Status / availability pill */
.status-pill {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid rgba(0, 230, 118, 0.25);
  background: rgba(0, 230, 118, 0.06);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: #b6f3c4;
  text-transform: uppercase;
}
.status-pill__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #2ee47a;
  box-shadow: 0 0 0 0 rgba(46, 228, 122, 0.5);
  animation: pulseDot 2s ease-out infinite;
}
@keyframes pulseDot {
  0%   { box-shadow: 0 0 0 0 rgba(46, 228, 122, 0.6); }
  70%  { box-shadow: 0 0 0 10px rgba(46, 228, 122, 0); }
  100% { box-shadow: 0 0 0 0 rgba(46, 228, 122, 0); }
}
@media (prefers-reduced-motion: reduce) { .status-pill__dot { animation: none; } }
@media (max-width: 768px) { .status-pill { display: none; } }

/* Project card extras: impact ribbon + CTA row */
.proj-card__impact {
  position: absolute;
  bottom: 0.75rem; left: 0.75rem;
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-pill);
  z-index: 2;
  max-width: calc(100% - 1.5rem);
}
.proj-card__impact span {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.proj-card__footer {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 0.75rem; margin-top: 0.5rem;
}
.proj-card__cta-row { display: flex; gap: 0.5rem; opacity: 0.6; }
.proj-card:hover .proj-card__cta-row { opacity: 1; }
.proj-card__cta {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-dim);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.proj-card:hover .proj-card__cta { color: var(--accent); border-color: var(--accent-dim); }

/* Marquee with icons */
.marquee__item { gap: 0.6rem !important; padding-right: 2rem; }
.marquee__item::after { margin-left: 1.4rem; }
.marquee__icon { width: 18px; height: 18px; opacity: 0.85; }

/* Expertise card icon — was emoji, now SVG */
.exp-card__icon { color: var(--accent); }
.exp-card__icon .icon { width: 26px; height: 26px; }

/* Post page: impact banner + shields strip */
.post__impact {
  display: inline-flex; align-items: center; gap: 0.55rem;
  margin-top: 1.25rem;
  padding: 0.7rem 1.05rem;
  background: rgba(201, 242, 112, 0.06);
  border: 1px solid var(--accent-dim);
  border-left-width: 3px;
  border-radius: 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.post__shields {
  display: flex; gap: 0.4rem; flex-wrap: wrap;
  margin-top: 1rem;
}
.post__shields img { height: 22px; }
.post__arch { max-width: 1100px; margin: 2.5rem auto 3rem; }
.arch-diagram svg {
  width: 100%; height: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

/* Principles */
.principles__list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem;
}
@media (max-width: 768px) { .principles__list { grid-template-columns: 1fr; } }
.principle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
  transition: border-color 0.3s ease, transform 0.5s var(--ease-out);
}
.principle:hover { border-color: var(--accent-dim); transform: translateY(-3px); }
.principle__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.principle__title {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
  margin: 0.5rem 0 0.6rem;
  letter-spacing: -0.01em;
}
.principle__body { color: var(--text-dim); margin: 0; font-size: 0.95rem; }

/* Skills tiers */
.skills__tiers { display: grid; gap: 1.25rem; }
.skill-tier {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 768px) {
  .skill-tier { grid-template-columns: 1fr; gap: 1rem; padding: 1.5rem; }
}
.skill-tier__label {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--text);
}
.skill-tier__desc {
  margin: 0.35rem 0 0;
  color: var(--text-faint);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}
.skill-tier__list {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 0.4rem;
}
.skill-chip {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--text);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.skill-chip:hover { border-color: var(--accent-dim); background: rgba(201,242,112,0.04); }
.skill-chip__icon { width: 16px; height: 16px; }

/* Testimonials */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 900px) { .testimonials__grid { grid-template-columns: 1fr; } }
.testimonial {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  margin: 0;
  position: relative;
}
.testimonial__quote-mark {
  width: 32px; height: 32px;
  color: var(--accent);
  opacity: 0.6;
  margin-bottom: 0.85rem;
}
.testimonial__quote {
  margin: 0 0 1.25rem; padding: 0;
  border: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--text);
  letter-spacing: -0.005em;
}
.testimonial__attr {
  display: flex; flex-direction: column; gap: 0.15rem;
}
.testimonial__attr strong { color: var(--text); font-weight: 600; font-size: 0.95rem; }
.testimonial__attr span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}
.testimonial__pending {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.15rem 0.45rem;
  border: 1px dashed var(--border-strong);
  border-radius: 4px;
  color: var(--text-faint);
  font-size: 0.65rem !important;
  text-transform: uppercase;
  width: fit-content;
}

/* Writing list */
.writing__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.writing__link {
  display: block;
  padding: 1.5rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s ease, transform 0.4s var(--ease-out), background 0.3s ease;
}
.writing__link:hover {
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.writing__meta {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.writing__time { display: inline-flex; align-items: center; gap: 0.3rem; }
.writing__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}
.writing__excerpt { color: var(--text-dim); margin: 0; font-size: 0.95rem; }
.writing__more {
  display: inline-flex; align-items: center; gap: 0.3rem;
  margin-top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* GitHub chart */
.github__chart {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  overflow-x: auto;
}
.github__chart img {
  display: block;
  width: 100%;
  height: auto;
  filter: contrast(1.05);
}

/* YouTube lite-embed strip */
.videos__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 900px) { .videos__grid { grid-template-columns: 1fr; } }
.lite-yt {
  display: flex; flex-direction: column; gap: 0.75rem;
}
.lite-yt__btn {
  position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  padding: 0; cursor: pointer;
  transition: border-color 0.3s ease, transform 0.4s var(--ease-out);
}
.lite-yt__btn:hover { transform: translateY(-3px); border-color: var(--accent-dim); }
.lite-yt__btn img {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0.78; transition: opacity 0.3s ease, transform 0.6s var(--ease-out);
}
.lite-yt__btn:hover img { opacity: 1; transform: scale(1.03); }
.lite-yt__play {
  position: absolute; top: 50%; left: 50%;
  width: 64px; height: 64px;
  transform: translate(-50%, -50%);
  display: grid; place-items: center;
  background: var(--accent);
  border-radius: 50%;
  color: #0a0a0b;
  box-shadow: 0 8px 24px -8px var(--accent-glow);
  transition: transform 0.4s var(--ease-spring);
}
.lite-yt__btn:hover .lite-yt__play { transform: translate(-50%, -50%) scale(1.08); }
.lite-yt__play .icon { width: 28px; height: 28px; transform: translateX(2px); }
.lite-yt__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.005em;
  color: var(--text);
}
.lite-yt__title:hover { color: var(--accent); }

/* Section tinting variants */
.principles, .skills, .testimonials { background: var(--bg); }
.writing, .github { background: var(--bg-raised); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* Reveal-image lazy load wrapper */
[data-lazy-img] img { opacity: 0; transition: opacity 0.5s ease; }
[data-lazy-img] img.is-loaded { opacity: 1; }