/* ============================================
   Design tokens
   ============================================ */
:root {
  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body:    'Source Serif 4', 'Georgia', serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --color-bg:             #FFFFFF;
  --color-surface:        #FFFFFF;
  --color-surface-2:      #FAFAFA;
  --color-surface-alpha:  transparent;
  --color-surface-2-alpha: transparent;

  --color-border:         rgba(30, 30, 30, 0.09);
  --color-border:         oklch(from #1E1E1E l c h / 0.09);

  --color-text:           #1E1E1E;
  --color-text-muted:     #6B6B6B;
  --color-text-faint:     #ABABAB;

  --color-primary:        #5BBCD4;
  --color-primary-hover:  #3A9FB8;
  --color-primary-glow:   rgba(91, 188, 212, 0.15);
  --color-primary-tint:   rgba(91, 188, 212, 0.08);

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --nav-height: 56px;
  --nav-bg:     rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] {
  --color-bg:             #141412;
  --color-surface:        #1A1918;
  --color-surface-2:      #1F1E1C;
  --color-surface-alpha:  transparent;
  --color-surface-2-alpha: transparent;

  --color-border:         rgba(232, 230, 224, 0.09);
  --color-border:         oklch(from #E8E6E0 l c h / 0.09);

  --color-text:           #E8E6E0;
  --color-text-muted:     #8A8880;
  --color-text-faint:     #5A5957;

  --color-primary:        #5BBCD4;
  --color-primary-hover:  #7AD0E4;
  --color-primary-tint:   rgba(91, 188, 212, 0.10);

  --nav-bg:               rgba(20, 20, 18, 0.92);
}

/* ============================================
   Reset / base
   ============================================ */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  font-family: var(--font-body);
  font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition:
    background-color var(--transition-interactive),
    color var(--transition-interactive);
}

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

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ============================================
   Base typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--color-text);
}

h1 { font-size: clamp(3rem, 7vw, 6rem); font-weight: 300; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }

p { margin: 0 0 1.25em; }

/* ============================================
   Icons
   ============================================ */
.icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-theme="light"] .icon--sun  { display: none; }
[data-theme="dark"]  .icon--moon { display: none; }

/* ============================================
   Site navigation (fixed top)
   ============================================ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  transition: background-color var(--transition-interactive);
}

.site-nav__inner {
  max-width: 1280px;
  height: 100%;
  margin-inline: auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
  transition: color var(--transition-interactive);
}
.site-nav__logo:hover { color: var(--color-primary); }
.site-nav__logo-mark {
  width: 22px;
  height: 22px;
  color: var(--color-primary);
}
.site-nav__logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.site-nav__links {
  display: flex;
  gap: 2rem;
  margin-left: auto;
  margin-right: 0.5rem;
}

.site-nav__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  text-decoration: none;
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition-interactive);
}
.site-nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms var(--transition-interactive);
}
.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-primary);
}
.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav__icon-btn {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  color: var(--color-text-muted);
  transition:
    color var(--transition-interactive),
    background-color var(--transition-interactive);
}
.site-nav__icon-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-tint);
}

.site-nav__hamburger { display: none; }
.site-nav__hamburger .icon--close { display: none; }
[data-menu-open="true"] .site-nav__hamburger .icon--menu  { display: none; }
[data-menu-open="true"] .site-nav__hamburger .icon--close { display: block; }

/* ============================================
   App / page shell
   ============================================ */
#app {
  padding-top: var(--nav-height);
  min-height: 100vh;
}

.page {
  min-height: calc(100vh - var(--nav-height));
  padding: 4rem 1.5rem 6rem;
}
#page-blog {
  padding-top: 0;
}
.page[hidden] { display: none; }

.page__placeholder {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
  padding-top: 4rem;
}
.page__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

/* ============================================
   Mobile nav
   ============================================ */
@media (max-width: 768px) {
  .site-nav__inner {
    padding: 0 1rem;
    gap: 0.875rem;
  }
  .site-nav__logo {
    gap: 0.4rem;
  }
  .site-nav__logo-mark {
    width: 20px;
    height: 20px;
  }
  .site-nav__logo-text {
    font-size: 1.05rem;
  }
  .site-nav__links {
    position: static;
    margin-left: auto;
    margin-right: 0;
    flex: 0 1 auto;
    flex-direction: row;
    align-items: center;
    gap: clamp(0.875rem, 4vw, 1.5rem);
    padding: 0;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    transition: none;
  }
  .site-nav__actions {
    margin-left: 0;
  }
  .site-nav__icon-btn {
    width: 34px;
    height: 34px;
  }
  .site-nav__hamburger { display: none; }
  .site-nav__link {
    width: auto;
    font-size: 0.68rem;
    letter-spacing: 0.12em;
  }
}

/* ============================================
   Terminal widget
   ============================================ */
.terminal {
  background: var(--color-surface-alpha);
  border: 1px solid rgba(91, 188, 212, 0.30);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-primary);
  box-shadow:
    0 0 20px rgba(91, 188, 212, 0.12),
    0 2px 8px rgba(30, 30, 30, 0.05);
  max-width: 560px;
  width: 100%;
}

[data-theme="dark"] .terminal {
  background: transparent;
  box-shadow:
    0 0 24px rgba(91, 188, 212, 0.10),
    0 2px 8px rgba(0, 0, 0, 0.4);
}

.terminal__header {
  color: var(--color-primary-hover);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.terminal__stream {
  display: flex;
  flex-direction: column;
}

.terminal__line {
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--color-primary);
  min-height: 1em;
}

.terminal__line--output {
  color: #7BA8B4;
  padding-left: 1rem;
}
[data-theme="dark"] .terminal__line--output {
  color: #9ECFD9;
}

.terminal__prompt-char {
  color: var(--color-primary-hover);
  font-weight: 500;
  margin-right: 0.45rem;
  text-shadow: 0 0 6px rgba(91,188,212,0.55);
}

.terminal__cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--color-primary);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: terminal-cursor-blink 1.1s step-end infinite;
}

@keyframes terminal-cursor-blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0; }
}

/* ============================================
   Alien geometry motifs
   ============================================ */

/* Hex grid micro-texture — ghosted background */
.has-hex-bg {
  position: relative;
  isolation: isolate;
}
.has-hex-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('./motifs/hex-grid.svg');
  background-repeat: repeat;
  background-size: 44px 25.4px;
  opacity: 0.09;
  pointer-events: none;
  z-index: -1;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000 50%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000 50%, transparent 100%);
}
[data-theme="dark"] .has-hex-bg::before {
  opacity: 0.14;
}

/* ============================================
   UFO hero decor — drifting saucers + alien glyphs
   ============================================ */
.hero__ufo-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
  color: var(--color-primary);
}
/* Force hero content above the UFO decor layer */
.hero > .hero__inner { position: relative; z-index: 3; }
.hero > .hero__glyph { z-index: 2; }

.hero__ufo {
  position: absolute;
  width: clamp(90px, 12vw, 170px);
  top: 4%;
  left: -18%;
  color: var(--color-primary);
  filter: drop-shadow(0 0 10px rgba(91,188,212,0.35));
  opacity: 0.72;
  animation: ufo-drift 50s linear infinite;
}
.hero__ufo-beam {
  transform-origin: 60px 34px;
  animation: ufo-beam-pulse 3.2s ease-in-out infinite;
}
.hero__ufo--distant {
  width: clamp(55px, 7vw, 100px);
  top: 2%;
  left: -10%;
  opacity: 0.38;
  filter: drop-shadow(0 0 6px rgba(91,188,212,0.25));
  animation: ufo-drift-slow 78s linear infinite;
  animation-delay: -30s;
}
[data-theme="dark"] .hero__ufo          { opacity: 0.82; }
[data-theme="dark"] .hero__ufo--distant { opacity: 0.5; }

@keyframes ufo-drift {
  0%   { transform: translate(0, 0)        rotate(-2deg); }
  25%  { transform: translate(35vw, -8px)  rotate(1deg); }
  50%  { transform: translate(70vw, 6px)   rotate(-1deg); }
  75%  { transform: translate(105vw, -4px) rotate(2deg); }
  100% { transform: translate(140vw, 0)    rotate(-2deg); }
}
@keyframes ufo-drift-slow {
  0%   { transform: translate(0, 0)       rotate(1deg); }
  50%  { transform: translate(70vw, 10px) rotate(-1deg); }
  100% { transform: translate(140vw, 0)   rotate(1deg); }
}
@keyframes ufo-beam-pulse {
  0%, 100% { opacity: 0.10; transform: scaleY(1); }
  50%      { opacity: 0.20; transform: scaleY(1.08); }
}

/* UFO hovering over the name */
.hero__name-wrap {
  position: relative;
  display: inline-block;
  padding-top: var(--name-wrap-pad-top, clamp(100px, 12vw, 150px));
}
.hero__name-ufo {
  display: block;
  width: 100%;
  height: auto;
  color: var(--color-primary);
  --hero-name-ufo-dome: #d9f3f7;
  filter: drop-shadow(0 0 12px rgba(91,188,212,0.45));
  opacity: 0.9;
  overflow: visible;
  pointer-events: none;
  position: relative;
  z-index: 1;
}
[data-theme="dark"] .hero__name-ufo {
  --hero-name-ufo-dome: #0c1220;
}
.hero__name-ufo-dome {
  fill: var(--hero-name-ufo-dome);
  stroke: none;
}

/* Saucer wrapper holds UFO + beam; bob animation on the wrapper keeps them locked. */
.hero__name-saucer {
  position: absolute;
  top: var(--saucer-offset-y, 0);
  left: 50%;
  width: var(--saucer-width, clamp(150px, 18vw, 240px));
  transform: translateX(-50%);
  pointer-events: none;
  animation: name-ufo-hover 5s ease-in-out infinite;
}
.hero__name-ufo-beam {
  /* legacy SVG beam path — no longer used; kept removed in markup */
  display: none;
}

/* Beam: positioned div anchored from below UFO to bottom of name */
.hero__name-beam {
  position: absolute;
  top: var(--name-beam-top, 60px);
  left: 50%;
  width: var(--name-beam-width, 90%);
  height: var(--name-beam-height, 100px);
  clip-path: polygon(25% 0, 75% 0, 85% 100%, 15% 100%);
  background: var(--color-primary);
  opacity: 0;
  transform: translateX(-50%) scaleY(0);
  transform-origin: top center;
  filter: blur(0.5px);
  pointer-events: none;
  z-index: 0;
  animation: name-beam 9s ease-in-out infinite;
}
.hero__name-saucer:not([data-beam-ready="true"]) .hero__name-beam {
  animation: none;
  opacity: 0;
}
@keyframes name-beam {
  0%, 55%  { opacity: 0;    transform: translateX(-50%) scaleY(0); }
  62%      { opacity: 0.32; transform: translateX(-50%) scaleY(1); }
  80%      { opacity: 0.32; transform: translateX(-50%) scaleY(1); }
  88%      { opacity: 0;    transform: translateX(-50%) scaleY(0); }
  100%     { opacity: 0;    transform: translateX(-50%) scaleY(0); }
}
@keyframes name-ufo-hover {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(-8px); }
}

/* Alien glyphs (crop-circle style) — scattered near the edges, slowly rotating */
.hero__glyph-mark {
  position: absolute;
  color: var(--color-primary);
  opacity: 0.16;
  animation: glyph-rotate 90s linear infinite;
}
[data-theme="dark"] .hero__glyph-mark { opacity: 0.26; }

.hero__glyph-mark--a {
  width: clamp(70px, 8vw, 120px);
  top: 10%; right: 4%;
  animation-duration: 120s;
}
.hero__glyph-mark--b {
  width: clamp(55px, 6vw, 90px);
  bottom: 10%; left: 3%;
  animation-duration: 80s;
  animation-direction: reverse;
  opacity: 0.13;
}
.hero__glyph-mark--c {
  width: clamp(60px, 7vw, 110px);
  top: 30%; right: 2%;
  animation-duration: 100s;
  opacity: 0.13;
}
[data-theme="dark"] .hero__glyph-mark--b { opacity: 0.22; }
[data-theme="dark"] .hero__glyph-mark--c { opacity: 0.22; }

@keyframes glyph-rotate {
  to { transform: rotate(360deg); }
}
@keyframes scroll-glyph-spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .hero__ufo,
  .hero__ufo-beam,
  .hero__name-ufo,
  .hero__name-beam,
  .hero__glyph-mark { animation: none; }
}
@media (max-width: 720px) {
  .hero__ufo--distant,
  .hero__glyph-mark--b,
  .hero__glyph-mark--c { display: none; }
}

/* Fibonacci spiral — section divider */
.motif-divider {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  margin: 1.25rem auto;
  max-width: 720px;
  padding: 0 1.5rem;
  opacity: 0.7;
}
.motif-divider::before,
.motif-divider::after {
  display: none;
}
.motif-divider img {
  width: 64px;
  height: 64px;
  flex: 0 0 auto;
  filter: drop-shadow(0 0 8px rgba(91, 188, 212, 0.35));
}
[data-theme="dark"] .motif-divider {
  opacity: 0.6;
}

/* Delaunay/Voronoi — blog hero backdrop */
.motif-voronoi {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
.motif-voronoi img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
[data-theme="dark"] .motif-voronoi {
  opacity: 0.28;
}

/* ============================================
   Home page — layout resets
   ============================================ */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
#app { flex: 1 0 auto; }

.page--home { padding: 0; }

/* ============================================
   Hero section
   ============================================ */
.hero {
  min-height: calc(100vh - var(--nav-height));
  padding: 0.25rem 1.5rem 3rem clamp(2rem, 5vw, 6rem);
  display: flex;
  align-items: flex-start;
  position: relative;
  overflow: visible;
}
/* Aurora glow behind hero — extraterrestrial atmosphere */
.hero::after {
  content: '';
  position: absolute;
  inset: 0 -10% auto -10%;
  height: 100%;
  background:
    radial-gradient(ellipse 55% 60% at 15% 10%, rgba(91, 188, 212, 0.20), transparent 75%);
  filter: blur(20px);
  pointer-events: none;
  z-index: 0;
  animation: heroAurora 14s ease-in-out infinite alternate;
}
[data-theme="dark"] .hero::after {
  background:
    radial-gradient(ellipse 55% 60% at 15% 10%, rgba(140, 110, 200, 0.32), transparent 75%);
}
@keyframes heroAurora {
  0%   { transform: translate(0, 0)    scale(1); }
  100% { transform: translate(2%, 1%) scale(1.05); }
}
.hero__inner {
  max-width: 1440px;
  margin-inline: auto;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
  overflow: visible;
}
.hero__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}
.hero__name {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 300;
  letter-spacing: -0.015em;
  margin: 0 0 0.5rem;
  line-height: 1;
  position: relative;
  text-shadow:
    0 0 30px rgba(91, 188, 212, 0.18),
    0 0 60px rgba(91, 188, 212, 0.10);
}
.hero__name::after {
  content: '';
  display: block;
  margin-top: 0.6rem;
  width: 88px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  box-shadow: 0 0 8px rgba(91, 188, 212, 0.7);
}
.hero__subtitle {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
}
.hero__intro {
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 52ch;
  color: var(--color-text);
  margin: 0 0 2.5rem;
}
.hero__actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.hero__socials {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  color: var(--color-text-muted);
  transition: color 0.2s, transform 0.2s;
}
.hero__social-link svg {
  width: 1.1rem;
  height: 1.1rem;
}
.hero__social-link:hover {
  color: var(--color-primary);
  transform: translateY(-2px);
}
.hero__col--copy {
  position: relative;
  padding-left: clamp(1rem, 4vw, 4rem);
  align-self: start;
}
.hero__col--field {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: min(860px, 95vh);
  overflow: visible;
}
.hero-field {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: min(860px, 95vh);
  background: transparent;
  overflow: visible;
  pointer-events: none;
}
.hero-field__canvas {
  pointer-events: auto;
  touch-action: none;
  user-select: none;
}
.hero-field__readout { pointer-events: none; }
.hero-field__corner,
.hero-field__meta { display: none !important; }
.hero-field__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  z-index: 0;
}
.hero-field__canvas:active {
  cursor: grabbing;
}
.hero-field__corner {
  position: absolute;
  width: 14px; height: 14px;
  border-color: rgba(91, 188, 212, 0.7);
  pointer-events: none;
  z-index: 2;
}
.hero-field__corner--tl { top: 8px; left: 8px; border-top: 1px solid; border-left: 1px solid; }
.hero-field__corner--tr { top: 8px; right: 8px; border-top: 1px solid; border-right: 1px solid; }
.hero-field__corner--bl { bottom: 8px; left: 8px; border-bottom: 1px solid; border-left: 1px solid; }
.hero-field__corner--br { bottom: 8px; right: 8px; border-bottom: 1px solid; border-right: 1px solid; }
.hero-field__meta {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  opacity: 0.58;
  pointer-events: none;
  z-index: 2;
}
.hero-field__meta--tl { top: 14px; left: 18px; }
.hero-field__meta--tr { top: 14px; right: 18px; }
.hero-field__meta--br { right: 18px; bottom: 76px; opacity: 0.4; }
/* Idle instruction hint bubble — position driven by JS (saucer screen projection) */
.hero-field__hint {
  position: absolute;
  z-index: 6;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.65rem 0.85rem 0.65rem 0.75rem;
  background: rgba(250, 250, 248, 0.88);
  border: 1px solid rgba(91, 188, 212, 0.45);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #236f83;
  letter-spacing: 0.06em;
  box-sizing: border-box;
  min-width: min(18rem, calc(100% - 1rem));
  max-width: calc(100% - 1rem);
  box-shadow: 0 0 18px rgba(91, 188, 212, 0.12), inset 0 0 12px rgba(91, 188, 212, 0.04);
  transition: opacity 0.6s ease, transform 0.6s ease;
  /* Speech bubble tail pointing bottom-right toward UFO home */
}
[data-theme="dark"] .hero-field__hint {
  background: rgba(8, 14, 20, 0.82);
  color: var(--color-primary);
}
.hero-field__hint::after {
  content: '';
  position: absolute;
  top: var(--hint-tail-y, 50%);
  right: -32px;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 32px solid rgba(91, 188, 212, 0.45);
}
.hero-field__hint::before {
  content: '';
  position: absolute;
  top: var(--hint-tail-y, 50%);
  right: -30px;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 31px solid rgba(250, 250, 248, 0.88);
  z-index: 1;
}
[data-theme="dark"] .hero-field__hint::before {
  border-left-color: rgba(8, 14, 20, 0.82);
}
.hero-field__hint--right::after {
  left: -32px;
  right: auto;
  border-left: 0;
  border-right: 32px solid rgba(91, 188, 212, 0.45);
}
.hero-field__hint--right::before {
  left: -30px;
  right: auto;
  border-left: 0;
  border-right: 31px solid rgba(250, 250, 248, 0.88);
}
[data-theme="dark"] .hero-field__hint--right::before {
  border-right-color: rgba(8, 14, 20, 0.82);
}
.hero-field__hint--compact {
  font-size: 0.64rem;
  gap: 0.22rem;
  min-width: min(13.75rem, calc(100% - 1rem));
}
.hero-field__hint--micro {
  font-size: 0.56rem;
  gap: 0.16rem;
  padding: 0.46rem 0.52rem 0.46rem 0.5rem;
  min-width: min(6.5rem, calc(100% - 1rem));
  letter-spacing: 0.045em;
}
.hero-field__hint--hidden {
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
}
.hero-field__hint-line {
  display: block;
  line-height: 1.5;
  overflow-wrap: break-word;
  word-break: normal;
}
@media (max-width: 640px) {
  .hero-field__hint {
    min-width: min(14rem, calc(100% - 1rem));
  }
  .hero-field__hint--micro {
    min-width: min(6.5rem, calc(100% - 1rem));
  }
}
.hero-field__hint-line--dim {
  color: rgba(35, 111, 131, 0.62);
  font-size: 0.63rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.1rem;
}
[data-theme="dark"] .hero-field__hint-line--dim {
  color: rgba(91, 188, 212, 0.42);
}
.hero-field__hint-prompt {
  color: rgba(35, 111, 131, 0.72);
  margin-right: 0.3em;
}
[data-theme="dark"] .hero-field__hint-prompt {
  color: rgba(91, 188, 212, 0.55);
}
.hero-field__readout {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 1;
  pointer-events: none;
  display: none;
}
.hero-field__glyph {
  color: var(--color-primary);
  font-size: 1rem;
}
.hero-field__readout-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.hero-field__title {
  color: var(--color-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 500;
}
.hero-field__body {
  color: var(--color-text-muted);
  letter-spacing: 0;
  text-transform: none;
  font-size: 0.75rem;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hero-field__tag {
  flex: 0 0 auto;
  color: var(--color-primary);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.75;
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--color-border);
  border-radius: 3px;
}
@media (prefers-reduced-motion: reduce) {
  .hero-field,
  .hero-field__canvas { cursor: default; }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.875rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    color var(--transition-interactive),
    background-color var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive);
}
.btn--outline {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary-tint);
  color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}
.btn--ghost {
  color: var(--color-text-muted);
}
.btn--ghost:hover {
  color: var(--color-primary);
}

/* ============================================
   Section scaffolding
   ============================================ */
.section {
  padding: 2.5rem 1.5rem;
}
.section--surface {
  background: var(--color-surface-2-alpha);
  position: relative;
}

.section__inner {
  max-width: 1180px;
  margin-inline: auto;
}
.section__head {
  margin-bottom: 1.75rem;
}
.section__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 0.5rem;
}
.section__head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
  color: var(--color-primary);
}

/* ============================================
   Featured posts
   ============================================ */
.featured-posts__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.featured-posts__empty {
  grid-column: 1 / -1;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-align: center;
  padding: 2rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.75rem;
  background: var(--color-surface-alpha);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  text-decoration: none;
  color: inherit;
  transition:
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive);
}
.post-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(30, 30, 30, 0.08);
  border-color: rgba(91, 188, 212, 0.3);
}
[data-theme="dark"] .post-card:hover {
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
}

.post-card__meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.post-card__category {
  color: var(--color-primary);
}
.post-card__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.375rem;
  margin: 0;
  color: var(--color-text);
  line-height: 1.25;
  transition: color var(--transition-interactive);
  position: relative;
  align-self: flex-start;
}
.post-card__title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms var(--transition-interactive);
}
.post-card:hover .post-card__title {
  color: var(--color-primary-hover);
}
.post-card:hover .post-card__title::after {
  transform: scaleX(1);
}
.post-card__excerpt {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0;
}
.post-card__readtime {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-top: auto;
  padding-top: 0.5rem;
}

/* Featured (first) card spans the grid */
.post-card--featured {
  grid-column: 1 / -1;
  padding: 2.5rem;
  gap: 1rem;
}
.post-card--featured .post-card__title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
}
.post-card--featured .post-card__excerpt {
  font-size: 1.0625rem;
  max-width: 68ch;
}

/* ============================================
   Research snapshot / project cards
   ============================================ */
.research-snapshot__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.75rem;
  background: var(--color-surface-alpha);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  transition:
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(30, 30, 30, 0.06);
}
.project-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.project-card__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.375rem;
  margin: 0;
  color: var(--color-text);
}
.project-card__desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0;
}
.project-card__tags {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.project-card__tags li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}
.project-card__link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  text-decoration: none;
  margin-top: auto;
  padding-top: 0.5rem;
  transition: color var(--transition-interactive);
}
.project-card__link:hover { color: var(--color-primary-hover); }

.status-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  color: var(--color-text-faint);
  flex-shrink: 0;
}
.status-badge--active {
  color: var(--color-primary);
  border-color: rgba(91, 188, 212, 0.35);
}

/* ============================================
   Global footer
   ============================================ */
.site-footer {
  padding: 2rem 1.5rem;
  flex-shrink: 0;
}
.site-footer__divider {
  margin: 4rem auto 2.5rem;
  max-width: 420px;
}
.site-footer__inner {
  max-width: 1180px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 1rem;
  padding-top: 0;
  border-top: none;
}
.site-footer__signature {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin: 0;
  justify-self: start;
}
.site-footer__copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  margin: 0;
}
.site-footer__social {
  display: flex;
  align-items: center;
  position: relative;
  grid-column: 2;
  justify-self: center;
}
.site-footer__contact-prompt {
  display: none;
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.45rem);
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  color: rgba(105, 114, 124, 0.86);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  animation: footer-ufo-hover 4.8s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}
body:has(#page-blog:not([hidden]) #blog-article:not([hidden])) .site-footer__contact-prompt {
  display: flex;
}
body:has(#page-blog:not([hidden]) #blog-article:not([hidden])) .site-footer {
  padding-top: 5rem;
}
.site-footer__ufo-wrap {
  position: relative;
  display: block;
  width: 66px;
  height: 38px;
}
.site-footer__ufo-beam {
  position: absolute;
  top: 27px;
  left: 50%;
  width: 174px;
  height: 51px;
  clip-path: polygon(36% 0, 64% 0, 92% 100%, 8% 100%);
  background: currentColor;
  opacity: 0;
  transform: translateX(-50%) scaleY(0);
  transform-origin: top center;
  filter: blur(0.4px);
  pointer-events: none;
  z-index: 0;
  animation: footer-ufo-beam 7.5s ease-in-out infinite;
}
.site-footer__ufo {
  position: relative;
  z-index: 1;
  width: 66px;
  height: 38px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.3;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.82;
}
.site-footer__ufo-dome-fill {
  fill: var(--color-bg);
  stroke: none;
}
.site-footer__ufo-rim,
.site-footer__ufo-dome {
  vector-effect: non-scaling-stroke;
}
[data-theme="dark"] .site-footer__contact-prompt {
  color: rgba(188, 196, 206, 0.76);
}
[data-theme="dark"] .site-footer__ufo-dome-fill {
  fill: #141412;
}
@keyframes footer-ufo-hover {
  0%, 100% { transform: translate3d(-50%, 0, 0); }
  50% { transform: translate3d(-50%, -4px, 0); }
}
@keyframes footer-ufo-beam {
  0%, 50%  { opacity: 0;    transform: translateX(-50%) scaleY(0); }
  58%      { opacity: 0.22; transform: translateX(-50%) scaleY(1); }
  82%      { opacity: 0.22; transform: translateX(-50%) scaleY(1); }
  90%      { opacity: 0;    transform: translateX(-50%) scaleY(0); }
  100%     { opacity: 0;    transform: translateX(-50%) scaleY(0); }
}
.site-footer__links {
  display: flex;
  gap: 0.5rem;
  position: relative;
  z-index: 1;
}
.site-footer__links a {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 4px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition:
    color var(--transition-interactive),
    background-color var(--transition-interactive);
}
.site-footer__links a:hover {
  color: var(--color-primary);
  background: var(--color-primary-tint);
}

.back-to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 1.75rem);
  bottom: clamp(1rem, 3vw, 1.75rem);
  width: 72px;
  height: 58px;
  display: grid;
  place-items: center;
  color: rgba(105, 114, 124, 0.9);
  background: transparent;
  border: 0;
  filter:
    drop-shadow(0 0 10px rgba(105, 114, 124, 0.18))
    drop-shadow(0 8px 16px rgba(0, 0, 0, 0.14));
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition:
    opacity var(--transition-interactive),
    transform var(--transition-interactive),
    color var(--transition-interactive);
  z-index: 80;
}
.back-to-top:hover {
  color: rgba(76, 84, 94, 0.95);
}
[data-theme="dark"] .back-to-top {
  color: rgba(188, 196, 206, 0.76);
  filter:
    drop-shadow(0 0 10px rgba(188, 196, 206, 0.14))
    drop-shadow(0 8px 16px rgba(0, 0, 0, 0.2));
}
[data-theme="dark"] .back-to-top:hover {
  color: rgba(218, 224, 232, 0.88);
}
.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.back-to-top__ufo {
  width: 72px;
  height: 54px;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.82;
  backface-visibility: hidden;
  transform: translate3d(0, 0, 0);
  transform-box: fill-box;
  transform-origin: center;
  will-change: transform;
}
.back-to-top.is-visible .back-to-top__ufo {
  animation: back-to-top-hover 4.4s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}
.back-to-top__ufo circle {
  fill: currentColor;
  stroke: none;
}
.back-to-top__ufo path,
.back-to-top__ufo line {
  vector-effect: non-scaling-stroke;
}
.back-to-top__arrow {
  stroke: currentColor;
  stroke-width: 3;
  opacity: 0.78;
  fill: none;
}
.back-to-top__dome-fill {
  fill: var(--color-bg);
  stroke: none;
}
.back-to-top__dome {
  fill: none;
}
[data-theme="dark"] .back-to-top__dome-fill {
  fill: #0c1220;
}
@keyframes back-to-top-hover {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -5px, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .back-to-top.is-visible .back-to-top__ufo {
    animation: none;
  }
}

/* ============================================
   Home page — responsive
   ============================================ */
@media (max-width: 960px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: left;
  }
  .hero__col--field {
    min-height: 460px;
  }
  .hero-field {
    position: relative;
    inset: auto;
    transform: none;
    width: 100%;
    height: 100%;
    min-height: 460px;
    --hero-field-top-bleed: clamp(1.75rem, 8vw, 3.25rem);
  }
  .hero-field__canvas {
    left: 0;
    right: 0;
    bottom: 0;
    top: calc(-1 * var(--hero-field-top-bleed));
    width: 100%;
    height: calc(100% + var(--hero-field-top-bleed));
  }

  .featured-posts__grid { grid-template-columns: 1fr; }
  .post-card--featured { grid-column: auto; }

  .research-snapshot__grid { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .hero { padding: 2rem 1.25rem 3rem; }
  .hero-field { min-height: 380px; }
  .hero-field__meta--tr,
  .hero-field__meta--br { display: none; }
  .section { padding: 2.75rem 1.25rem; }
  .post-card, .project-card { padding: 1.5rem; }
  .post-card--featured { padding: 1.75rem; }
  .site-footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .site-footer__signature,
  .site-footer__social {
    grid-column: 1;
    justify-self: center;
  }
}

/* ============================================
   About page
   ============================================ */
.about-hero,
.research-hero,
.contact-hero {
  padding: 4rem 1.5rem 2rem;
  position: relative;
  isolation: isolate;
}
.about-hero__inner,
.research-hero__inner,
.blog-hero__inner,
.contact-hero__inner {
  max-width: 1180px;
  margin-inline: auto;
}
.about-hero__name {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 300;
  margin: 0.25rem 0 0.5rem;
  letter-spacing: -0.01em;
  line-height: 1.05;
}
.about-hero__role {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin: 0;
  font-style: italic;
}

.bio-prose {
  max-width: 65ch;
  margin-inline: auto;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text);
}
.bio-prose p { margin: 0 0 1.25em; }
.bio-prose strong {
  font-weight: 600;
  color: var(--color-text);
}

/* Skills terminal */
.skills-terminal {
  max-width: 860px;
  margin-inline: auto;
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.4rem 1.25rem;
  margin-top: 0.75rem;
  color: var(--color-primary);
}
.skills-grid span {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-primary);
  padding-left: 1rem;
  position: relative;
}
.skills-grid span::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-primary-hover);
  opacity: 0.7;
}

/* Categorized skills tree */
.skills-tree {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem 2rem;
  margin-top: 0.75rem;
}
.skills-group__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  opacity: 0.9;
}
.skills-group__items {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding-left: 0.9rem;
  border-left: 1px dashed rgba(91, 188, 212, 0.28);
}
.skills-group__items span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text);
  padding-left: 0.9rem;
  position: relative;
  opacity: 0.88;
}
.skills-group__items span::before {
  content: '└';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  opacity: 0.55;
}
[data-theme="dark"] .skills-group__items span { color: var(--color-text); }

/* Education timeline */
.timeline {
  --timeline-date-col: 9.75rem;
  --timeline-line-col: 1rem;
  --timeline-line-offset: 0.5rem;
  --timeline-body-gap: 1.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: 780px;
  margin-inline: auto;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: calc(var(--timeline-date-col) + var(--timeline-line-offset));
  top: 0.5rem;
  bottom: 0.5rem;
  width: 1px;
  background: var(--color-border);
}
.timeline__item {
  display: grid;
  grid-template-columns: var(--timeline-date-col) var(--timeline-line-col) minmax(0, 1fr);
  column-gap: 0;
  padding: 1.25rem 0;
  position: relative;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(var(--timeline-date-col) + var(--timeline-line-offset) - 4px);
  top: 1.75rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
}
.timeline__dates {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-top: 0;
  padding-right: 0.85rem;
  text-align: right;
  white-space: nowrap;
}
.timeline__body {
  grid-column: 3;
  min-width: 0;
  padding-left: var(--timeline-body-gap);
}
.timeline__category-heading {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
  opacity: 0.85;
}
.timeline__category-heading:first-of-type {
  margin-top: 0;
}
.timeline__body h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 400;
  margin: 0 0 0.25rem;
}
.timeline__body h4 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  margin: 0 0 0.2rem;
  line-height: 1.25;
}
.timeline__org {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--color-text-muted);
  font-style: italic;
  font-size: 0.95em;
}
.timeline__bullets {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.timeline__bullets li {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-text);
}
.timeline__bullets li::marker {
  color: var(--color-primary);
}
.timeline--work .timeline__item { padding: 1.5rem 0; }
.timeline--work .timeline__body { margin-top: -3px; }
.timeline__institution {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0 0 0.5rem;
  font-style: italic;
}
.timeline__body p:last-child { margin: 0; }

.education-grid .timeline__dates {
  padding-top: calc(0.2rem + 1px);
}

@media (max-width: 640px) {
  .timeline::before { left: 0.45rem; }
  .timeline__item {
    grid-template-columns: 1fr;
    padding-left: 1.75rem;
  }
  .timeline__item::before { left: 0; }
  .timeline__dates {
    padding-top: 0;
    padding-right: 0;
    text-align: left;
  }
  .timeline__body {
    grid-column: 1;
    padding-left: 0;
  }
}

/* Reading / Now */
.reading-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 640px;
  margin-inline: auto;
  padding: 1.5rem 1.75rem;
  background: var(--color-surface-alpha);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  text-decoration: none;
  color: inherit;
  transition:
    transform var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.reading-item:hover {
  transform: translateY(-2px);
  border-color: rgba(91, 188, 212, 0.3);
  box-shadow: 0 10px 24px rgba(30, 30, 30, 0.06);
}
.reading-item__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin: 0 0 0.25rem;
}
.reading-item__body h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.25rem;
  margin: 0;
}
.reading-item__author {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0.25rem 0 0;
  font-style: italic;
}
.reading-item__arrow {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-primary);
  transition: transform var(--transition-interactive);
}
.reading-item:hover .reading-item__arrow { transform: translateX(4px); }

/* ============================================
   Research page
   ============================================ */
.research-hero h1 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 300;
  margin: 0.25rem 0 1rem;
  letter-spacing: -0.01em;
  line-height: 1.05;
}
.research-hero__intro {
  max-width: 65ch;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin: 0;
}

.research__stack {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.project-row {
  padding: 2.5rem 0;
  max-width: 820px;
  margin-inline: auto;
}
.project-row:first-child { padding-top: 0; }
.project-row__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.25rem;
  flex-wrap: wrap;
}
.project-row__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 400;
  margin: 0;
}
.project-row__tagline {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-muted);
  margin: 0 0 1rem;
}
.project-row__body p {
  font-size: 1.0625rem;
  line-height: 1.7;
  margin: 0 0 1.25em;
}
.project-row__body strong { font-weight: 600; }
.project-row__links {
  margin-top: 1rem;
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.project-row__links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.project-row__links a:hover { color: var(--color-primary-hover); }
.project-row__divider {
  border: 0;
  border-top: 1px solid var(--color-border);
  max-width: 820px;
  margin: 0 auto;
}

/* ============================================
   Blog index page
   ============================================ */
.blog-hero {
  position: relative;
  min-height: calc(34vh + var(--nav-height));
  display: flex;
  align-items: flex-end;
  padding: 0 1.5rem 3.5rem;
  margin-top: calc(-1 * var(--nav-height));
  overflow: hidden;
}
.blog-hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300;
  margin: 0.25rem 0 0.75rem;
  letter-spacing: -0.01em;
  line-height: 1;
}
.blog-hero__intro {
  max-width: 60ch;
  color: var(--color-text-muted);
  margin: 0;
  font-size: 1.0625rem;
}

@media (max-width: 720px) {
  .blog-hero {
    min-height: calc(22vh + var(--nav-height));
    padding-bottom: 2rem;
  }
}

#blog-index > .section {
  padding-top: 0;
  background: var(--color-bg);
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}
.category-tabs__btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.65rem 1rem;
  border: 0;
  background: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
}
.category-tabs__btn:hover { color: var(--color-primary); }
.category-tabs__btn[aria-pressed="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.blog-featured {
  margin-bottom: 2rem;
}
.blog-featured .post-card {
  padding: 2.5rem;
  background: var(--color-surface-alpha);
}
.blog-featured .post-card__title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
}
.blog-featured .post-card__excerpt {
  font-size: 1.0625rem;
  max-width: 68ch;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.blog-grid__empty {
  grid-column: 1 / -1;
  padding: 3rem;
  text-align: center;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}
@media (max-width: 720px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-featured .post-card { padding: 1.75rem; }
}

/* ============================================
   Article page (markdown)
   ============================================ */
.blog-article {
  max-width: 900px;
  margin-inline: auto;
  padding: 3rem 1.5rem 4rem;
  background: var(--color-bg);
}
.blog-article[hidden] { display: none; }

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-decoration: none;
  margin-bottom: 2.5rem;
  transition: color var(--transition-interactive);
}
.article-back:hover { color: var(--color-primary); }

.article-header { margin-bottom: 2.5rem; }
.article-header__meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.article-header__category { color: var(--color-primary); }
.article-share {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--color-primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}
.article-share:hover,
.article-share:focus-visible {
  color: var(--color-primary-hover);
}
.article-share:focus-visible {
  outline: 1px solid currentColor;
  outline-offset: 4px;
}
.article-share svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.article-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
  max-width: 26ch;
}
.article-header__excerpt {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 72ch;
  margin: 0;
  font-style: italic;
}

.article-body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text);
  max-width: 72ch;
}
.article-body h1, .article-body h2, .article-body h3 {
  font-family: var(--font-display);
  font-weight: 400;
  margin: 2.5em 0 0.6em;
  line-height: 1.2;
}
.article-body h2 {
  position: relative;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}
.article-body h2::before {
  content: '.  .  .';
  position: absolute;
  left: 0;
  right: 0;
  top: -2.58em;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.65em;
  font-weight: 400;
  letter-spacing: 0.38em;
  line-height: 1;
  text-align: center;
}
.article-body h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
.article-body p { margin: 0 0 1.4em; }
.article-body ul, .article-body ol { margin: 0 0 1.4em; padding-left: 1.5em; }
.article-body li { margin-bottom: 0.35em; }
.article-body strong { font-weight: 600; }

.article-body blockquote,
.article-blockquote {
  border-left: 3px solid var(--color-primary);
  padding: 0.25em 0 0.25em 1.5rem;
  margin: 1.5em 0;
  font-style: italic;
  color: var(--color-text-muted);
}
.article-body blockquote p:last-child,
.article-blockquote p:last-child { margin: 0; }

.article-body pre,
.terminal-code-block {
  background: #F0F7F9;
  border: 1px solid rgba(91, 188, 212, 0.25);
  border-left: 3px solid var(--color-primary);
  border-radius: 6px;
  padding: 1.1rem 1.4rem;
  overflow-x: auto;
  margin: 1.75em 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: #3A6E7A;
  max-width: min(100%, 900px);
}
[data-theme="dark"] .article-body pre,
[data-theme="dark"] .terminal-code-block {
  background: #121A1C;
  border-color: rgba(91, 188, 212, 0.3);
  color: #9ECFD9;
}
.article-body pre code,
.terminal-code-block code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: inherit;
  font-size: inherit;
}

.article-diagram,
.mermaid-diagram {
  position: relative;
  margin: 2rem 0;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow-x: auto;
  box-sizing: border-box;
  width: 100%;
  max-width: 900px;
  margin-left: 0;
  transform: translateX(0);
  transition:
    width 160ms cubic-bezier(0.4, 0, 1, 1),
    max-width 160ms cubic-bezier(0.4, 0, 1, 1),
    margin 160ms cubic-bezier(0.4, 0, 1, 1),
    transform 160ms cubic-bezier(0.4, 0, 1, 1);
}
[data-theme="dark"] .article-diagram,
[data-theme="dark"] .mermaid-diagram {
  background: #171716;
}
.article-diagram--expanded {
  width: calc(100vw - 3rem);
  max-width: 1180px;
  margin-left: 50%;
  transform: translateX(-50%);
  transition:
    width 340ms cubic-bezier(0.2, 0.8, 0.2, 1),
    max-width 340ms cubic-bezier(0.2, 0.8, 0.2, 1),
    margin 340ms cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 340ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.article-diagram__canvas svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}
.article-diagram__canvas svg .entityBox {
  fill: #FFFFFF !important;
  stroke: #3A9FB8 !important;
}
.article-diagram__canvas svg .attributeBoxOdd {
  fill: #F7FCFD !important;
  stroke: #3A9FB8 !important;
}
.article-diagram__canvas svg .attributeBoxEven {
  fill: #FFFFFF !important;
  stroke: #3A9FB8 !important;
}
.article-diagram__canvas svg .relationshipLabelBox {
  fill: #FFFFFF !important;
  opacity: 0.92 !important;
}
.article-diagram__canvas svg .entityLabel,
.article-diagram__canvas svg .attributeBoxOdd + text,
.article-diagram__canvas svg .attributeBoxEven + text,
.article-diagram__canvas svg .relationshipLabel,
.article-diagram__canvas svg .er text,
.article-diagram__canvas svg .er tspan {
  fill: #1E1E1E !important;
  color: #1E1E1E !important;
}
[data-theme="dark"] .article-diagram__canvas svg .entityBox {
  fill: #1A1918 !important;
  stroke: #5BBCD4 !important;
}
[data-theme="dark"] .article-diagram__canvas svg .attributeBoxOdd {
  fill: #182224 !important;
  stroke: #5BBCD4 !important;
}
[data-theme="dark"] .article-diagram__canvas svg .attributeBoxEven {
  fill: #1F1E1C !important;
  stroke: #5BBCD4 !important;
}
[data-theme="dark"] .article-diagram__canvas svg .relationshipLabelBox {
  fill: #141412 !important;
  opacity: 0.94 !important;
}
[data-theme="dark"] .article-diagram__canvas svg .entityLabel,
[data-theme="dark"] .article-diagram__canvas svg .attributeBoxOdd + text,
[data-theme="dark"] .article-diagram__canvas svg .attributeBoxEven + text,
[data-theme="dark"] .article-diagram__canvas svg .relationshipLabel,
[data-theme="dark"] .article-diagram__canvas svg .er text,
[data-theme="dark"] .article-diagram__canvas svg .er tspan {
  fill: #E8E6E0 !important;
  color: #E8E6E0 !important;
}
.article-diagram__expand {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--color-text-muted);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  opacity: 0.78;
  transition:
    color var(--transition-interactive),
    opacity var(--transition-interactive),
    border-color var(--transition-interactive);
}
.article-diagram__expand:hover,
.article-diagram__expand:focus-visible {
  color: var(--color-primary);
  border-color: rgba(91, 188, 212, 0.45);
  opacity: 1;
}
.article-diagram__expand svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mermaid-diagram--error {
  border-color: rgba(196, 75, 75, 0.45);
}
.mermaid-diagram--error::before {
  content: 'Diagram could not be rendered';
  display: block;
  margin-bottom: 0.75rem;
  color: #a34545;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
[data-theme="dark"] .mermaid-diagram--error::before {
  color: #f19a9a;
}

.article-body code,
.article-body :not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-primary-tint);
  color: var(--color-primary-hover);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-interactive);
}
.article-body a:hover { color: var(--color-primary-hover); }

.article-body img {
  max-width: 100%;
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(30, 30, 30, 0.08);
  margin-block: 2rem;
}

.article-body hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: 3rem auto;
  max-width: 8rem;
}

.article-tags {
  list-style: none;
  padding: 0;
  margin: 3rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.article-tags li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
}

.article-related {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border);
}
.article-related h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.5rem;
  margin: 0 0 1.5rem;
}
.article-related__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
@media (max-width: 640px) {
  .article-related__grid { grid-template-columns: 1fr; }
}

.article-missing {
  max-width: 560px;
  margin: 4rem auto;
  text-align: center;
}
.article-missing h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  margin: 0 0 1rem;
}
.article-missing p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* ============================================
   Contact page
   ============================================ */
.contact-hero h1 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 300;
  margin: 0.25rem 0 1rem;
  line-height: 1.05;
}
.contact-intro {
  max-width: 60ch;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin: 0 0 2.5rem;
}
.contact-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 560px;
}
.contact-links a {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-surface-alpha);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition:
    transform var(--transition-interactive),
    border-color var(--transition-interactive),
    color var(--transition-interactive);
}
.contact-links a:hover {
  transform: translateY(-2px);
  color: var(--color-primary);
  border-color: rgba(91, 188, 212, 0.35);
}
.contact-links__label {
  color: var(--color-text-faint);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  min-width: 4.5rem;
}
.contact-links__value {
  flex: 1;
  word-break: break-all;
}
.contact-email {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(91, 188, 212, 0.35);
  padding-bottom: 0.1em;
  display: inline-block;
  margin-bottom: 2.5rem;
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
}
.contact-email:hover {
  color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

/* ============================================
   Scroll reveal
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 500ms ease,
    transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
.reveal.is-revealed {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================
   Accessibility — reduced motion
   ============================================ */
@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;
  }
}

/* ============================================
   Visual richness — scroll-home enhancements
   ============================================ */

/* Smooth scroll with nav offset so anchor targets clear the fixed nav */
html { scroll-padding-top: calc(var(--nav-height) + 16px); }

/* Hero */
.hero { position: relative; overflow: visible; }
.hero__inner { position: relative; z-index: 1; }

/* Contact 3D crystal */
.section--has-3d { position: relative; overflow: hidden; }
.contact-crystal-canvas {
  position: absolute;
  top: 50%;
  right: -4%;
  transform: translateY(-50%);
  width: clamp(280px, 32vw, 460px);
  aspect-ratio: 1;
  pointer-events: none;
  z-index: 0;
  opacity: 0.75;
  filter: drop-shadow(0 0 18px rgba(91, 188, 212, 0.45));
}
[data-theme="dark"] .contact-crystal-canvas { opacity: 0.95; }
.section--has-3d .section__inner { position: relative; z-index: 1; }
@media (max-width: 840px) {
  .contact-crystal-canvas {
    position: relative;
    top: auto; right: auto;
    transform: none;
    width: 220px;
    margin: 1.5rem auto 0;
    display: block;
  }
}

/* Scroll hint under hero CTA */
.hero__scroll-hint {
  position: absolute;
  bottom: clamp(3rem, 6vh, 5.5rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0;
  z-index: 4;
  pointer-events: none;
}
.hero__scroll-glyph {
  width: 72px;
  height: 72px;
  color: var(--color-primary);
  opacity: 0.30;
  position: absolute;
  top: 50%;
  left: 50%;
  /* translate stays in the animation so rotation doesn't orbit it */
  animation: scroll-glyph-spin 20s linear infinite;
  pointer-events: none;
}
.hero__scroll-label {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.5rem;
}
.hero__scroll-line {
  display: inline-block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scrollLinePulse 2.4s ease-in-out infinite;
  transform-origin: top;
}
@keyframes scrollLinePulse {
  0%, 100% { transform: scaleY(0.3); opacity: 0.4; }
  50%      { transform: scaleY(1);   opacity: 1; }
}

/* Numbered sections */
.section--numbered { position: relative; overflow: hidden; }
.section__head--numbered { position: relative; }

#experience,
#education,
#projects {
  padding-top: 1.25rem;
}

#education .section__head {
  margin-bottom: 0.35rem;
}

/* Writing section also needs relative positioning for bg glyph */
.featured-posts {
  position: relative;
  overflow: hidden;
  padding-top: 1.25rem;
}

#contact {
  padding-top: 1.25rem;
}
.section__num {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 400;
  font-style: italic;
  line-height: 0.9;
  color: var(--color-primary);
  opacity: 0.32;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
  user-select: none;
  pointer-events: none;
  text-shadow:
    0 0 24px rgba(91, 188, 212, 0.35),
    0 0 60px rgba(91, 188, 212, 0.18);
  animation: numPulse 5s ease-in-out infinite alternate;
}
@keyframes numPulse {
  0%   { opacity: 0.22; }
  100% { opacity: 0.42; }
}
[data-theme="dark"] .section__num { opacity: 0.4; }

/* Secondary heading for skills / education / reading */
.section__subheading {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin: 0.25rem 0 1.25rem;
}

/* Section intro paragraph */
.section__intro {
  max-width: 62ch;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin: 1rem 0 0;
}

/* Section CTA row (centered) */
.section__cta {
  margin-top: 3.5rem;
  display: flex;
  justify-content: center;
}

/* Education two-column grid */
.timeline.education-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 clamp(2rem, 5vw, 4.5rem);
  max-width: none;
}
.timeline.education-grid::before { display: none; }
@media (max-width: 720px) {
  .timeline.education-grid { grid-template-columns: 1fr; }
}

/* Split two-column layout */
.section__inner--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.split__col { display: flex; flex-direction: column; gap: 0.25rem; }
@media (max-width: 840px) {
  .section__inner--split { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* Bio prose lead paragraph + drop cap */
.bio-prose__lead {
  font-size: 1.18rem;
  line-height: 1.7;
}
.bio-prose__dropcap {
  float: left;
  font-family: var(--font-display);
  font-size: 4.25rem;
  line-height: 0.88;
  font-weight: 500;
  color: var(--color-primary);
  padding: 0.35rem 0.55rem 0 0;
  margin: 0.1rem 0 0;
  font-style: italic;
}

/* Marginalia — small right-aligned label tucked below a block */
.marginalia {
  display: flex;
  justify-content: flex-end;
  gap: 1.5rem;
  margin-top: 2.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* Stat tiles grid (grad GPA / years / corpus size) */
.stat-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}
.stat {
  background: var(--color-surface-alpha);
  border: 1px solid var(--color-border);
  padding: 1rem 0.9rem;
  text-align: left;
  transition: transform var(--transition-interactive), border-color var(--transition-interactive);
}
.stat:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  font-weight: 500;
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}
.stat__num span {
  font-size: 0.55em;
  font-family: var(--font-mono);
  font-weight: 400;
  vertical-align: baseline;
  margin-left: 0.05em;
  color: var(--color-primary-hover);
}
.stat__label {
  margin-top: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
@media (max-width: 520px) {
  .stat-grid { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .stat { padding: 0.8rem 0.6rem; }
}

/* Project-row index numeral (01, 02, ...) */
.project-row { position: relative; padding: 1.5rem 1.25rem; }
/* Corner brackets — alien tech crop marks */
.project-row::before,
.project-row::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition-interactive);
  pointer-events: none;
}
.project-row::before {
  top: 0; left: 0;
  border-right: none; border-bottom: none;
}
.project-row::after {
  bottom: 0; right: 0;
  border-left: none; border-top: none;
}
.project-row:hover::before,
.project-row:hover::after {
  opacity: 0.85;
}
.project-row__index {
  position: absolute;
  top: calc(1.5rem + 0.36rem);
  left: -3.65rem;
  background: var(--color-surface-alpha);
  padding: 0.15rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--color-primary);
  opacity: 0.85;
  user-select: none;
  border: 1px solid var(--color-border);
  border-radius: 2px;
}
.project-row:first-child .project-row__index {
  top: 0.36rem;
}
.project-row__index::before {
  content: '◇ ';
  color: var(--color-primary);
  opacity: 0.6;
}

/* Project-row stats dl — inline horizontal tiles */
@media (max-width: 960px) {
  .project-row__index {
    left: 0;
    transform: translateY(-1.45rem);
  }
}

.project-row__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin: 1.25rem 0 0.5rem;
  padding: 1rem 0;
  border-top: 1px dashed var(--color-border);
  border-bottom: 1px dashed var(--color-border);
}
.project-row__stats > div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.project-row__stats dt {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0;
}
.project-row__stats dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1;
  letter-spacing: -0.01em;
}
.project-row__stats dd span {
  font-family: var(--font-mono);
  font-size: 0.7em;
  font-weight: 400;
  color: var(--color-primary-hover);
  margin-left: 0.05em;
}

/* Voronoi motif corner variant — pinned, clipped */
.motif-voronoi--corner {
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(220px, 28vw, 420px);
  aspect-ratio: 1;
  opacity: 0.18;
  pointer-events: none;
  overflow: hidden;
  mask-image: radial-gradient(circle at top right, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at top right, #000 30%, transparent 75%);
  filter: drop-shadow(0 0 12px rgba(91, 188, 212, 0.4));
}
.motif-voronoi--corner img { width: 100%; height: 100%; object-fit: cover; }
[data-theme="dark"] .motif-voronoi--corner { opacity: 0.26; }
.section--numbered { /* ensure corner motif anchors correctly */ overflow: hidden; }

/* ============================================
   Section background glyphs (replacing § numbers)
   ============================================ */
.section-bg-glyph {
  position: absolute;
  pointer-events: none;
  color: var(--color-primary);
  opacity: 0.09;
  animation: glyphDrift 20s ease-in-out infinite alternate;
}
[data-theme="dark"] .section-bg-glyph { opacity: 0.14; }

@keyframes glyphDrift {
  0%   { transform: translate(0, 0)    rotate(0deg)   scale(1); }
  100% { transform: translate(1%, 2%)  rotate(6deg)   scale(1.04); }
}

.section-bg-glyph--about {
  width: clamp(240px, 35vw, 500px);
  top: -5%;
  left: -4%;
  animation-duration: 22s;
  animation-direction: alternate;
}
.section-bg-glyph--research {
  width: clamp(260px, 38vw, 540px);
  top: -3%;
  left: -5%;
  animation-duration: 18s;
  animation-direction: alternate-reverse;
}
.section-bg-glyph--writing {
  width: clamp(200px, 28vw, 400px);
  top: 5%;
  left: -3%;
  animation-duration: 24s;
  animation-direction: alternate;
}
.section-bg-glyph--contact {
  width: clamp(260px, 36vw, 520px);
  top: 10%;
  left: -6%;
  animation-duration: 26s;
  animation-direction: alternate-reverse;
}

/* Contact block wrapper */
.contact-block {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
  max-width: 640px;
}

/* Skills terminal override (keeps existing skills-grid look but inside terminal frame) */
.skills-terminal { padding: 1rem 1.25rem 1.5rem; }
.skills-terminal .terminal__header {
  margin-bottom: 1rem;
}

/* ============================================
   Site-wide alien star field (fixed canvas)
   ============================================ */
.stars-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 1;
  /* no blend mode in light mode — teal dots render directly on cream */
}
[data-theme="dark"] .stars-canvas {
  opacity: 0.85;
  mix-blend-mode: screen;
}
/* Scroll-reactive 3D alien constellation (WebGL) */
.scroll-3d-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.95;
  transition: opacity 0.4s ease;
}
[data-theme="dark"] .scroll-3d-canvas {
  opacity: 0.7;
}
/* Hide 3D solar system on the blog page (keep stars) */
body:has(#page-blog:not([hidden])) .scroll-3d-canvas {
  opacity: 0 !important;
}

/* ============================================
   Widescreen composition
   ============================================ */
@media (min-width: 1600px) {
  .site-nav__inner {
    max-width: 1520px;
    padding-inline: 2rem;
  }

  .hero {
    min-height: calc(86vh - var(--nav-height));
    padding-top: clamp(2.5rem, 4vh, 4rem);
    padding-left: clamp(5rem, 7vw, 9rem);
    padding-right: clamp(2rem, 4vw, 5rem);
    padding-bottom: clamp(1.25rem, 2.5vh, 2.25rem);
  }

  .hero__inner {
    max-width: 1680px;
    grid-template-columns: minmax(460px, 0.95fr) minmax(820px, 1.45fr);
    gap: clamp(4.5rem, 6.5vw, 7.5rem);
  }

  .hero__col--copy {
    padding-left: clamp(1.5rem, 3vw, 4rem);
  }

  .hero__name {
    font-size: clamp(6rem, 5vw, 7.25rem);
  }

  .hero__subtitle {
    font-size: 1.28rem;
    margin-bottom: 2.25rem;
  }

  .hero__intro {
    font-size: 1.2rem;
    max-width: 56ch;
    line-height: 1.75;
  }

  .hero__actions {
    gap: 1.75rem;
  }

  .hero__actions .btn {
    padding: 0.95rem 1.8rem;
    font-size: 0.82rem;
  }

  .hero__social-link {
    width: 2.35rem;
    height: 2.35rem;
  }

  .hero__social-link svg {
    width: 1.25rem;
    height: 1.25rem;
  }

  .hero__col--field,
  .hero-field {
    min-height: min(860px, 78vh);
  }

  .hero-field {
    --hero-field-top-bleed: clamp(2.5rem, 4vh, 4rem);
  }

  .hero-field__canvas {
    top: calc(-1 * var(--hero-field-top-bleed));
    height: calc(100% + var(--hero-field-top-bleed));
  }

  .section__inner,
  .about-hero__inner,
  .research-hero__inner,
  .blog-hero__inner,
  .contact-hero__inner,
  .site-footer__inner {
    max-width: 1360px;
  }

  .section {
    padding-block: clamp(2.5rem, 3vw, 4rem);
    padding-inline: clamp(2rem, 4vw, 5rem);
  }

  #experience,
  #education,
  #projects,
  .featured-posts,
  #contact {
    padding-top: clamp(1.25rem, 1.5vw, 2rem);
  }

  #blog-index > .section {
    padding-top: clamp(1rem, 2vw, 2rem);
  }

  .blog-hero {
    min-height: calc(32vh + var(--nav-height));
    padding-inline: clamp(2rem, 4vw, 5rem);
    padding-bottom: clamp(3rem, 4vw, 4.5rem);
  }

  .section__head {
    margin-bottom: clamp(1.5rem, 2.25vw, 2.5rem);
  }

  #education .section__head {
    margin-bottom: 0.4rem;
  }

  .section__intro,
  .research-hero__intro,
  .blog-hero__intro,
  .contact-intro {
    max-width: 68ch;
  }

  .section__inner--split {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(4rem, 6vw, 6.5rem);
  }

  .skills-terminal {
    max-width: 1040px;
  }

  .timeline {
    max-width: 900px;
  }

  .reading-item,
  .contact-block {
    max-width: 720px;
  }

  .contact-links {
    max-width: 680px;
  }

  .site-footer {
    padding: 2.75rem clamp(2rem, 4vw, 5rem);
  }

  .site-footer__links a {
    width: 40px;
    height: 40px;
  }

  .project-row,
  .project-row__divider {
    max-width: 1080px;
  }

  .project-row__body {
    max-width: 76ch;
  }

  .featured-posts__grid {
    gap: 2rem;
  }

  .blog-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }

  .post-card--featured {
    grid-column: 1 / -1;
  }


  .blog-article {
    max-width: 980px;
    padding-top: clamp(4rem, 5vw, 6rem);
  }

  .motif-voronoi--corner {
    width: clamp(420px, 25vw, 620px);
  }

  .section-bg-glyph--about,
  .section-bg-glyph--research,
  .section-bg-glyph--contact {
    width: clamp(480px, 29vw, 720px);
  }

  .section-bg-glyph--writing {
    width: clamp(380px, 24vw, 580px);
  }

  .hero__scroll-hint {
    bottom: clamp(3.5rem, 6vh, 6.5rem);
  }
}

@media (min-width: 2200px) {
  .site-nav__inner {
    max-width: 1680px;
  }

  .hero__inner {
    max-width: 1840px;
  }

  .section__inner,
  .about-hero__inner,
  .research-hero__inner,
  .blog-hero__inner,
  .contact-hero__inner,
  .site-footer__inner {
    max-width: 1480px;
  }

  .project-row,
  .project-row__divider {
    max-width: 1180px;
  }

  .skills-terminal {
    max-width: 1120px;
  }
}

/* Make sure interactive content sits above the star field */
main,
footer { position: relative; z-index: 1; }