/* ============================================================
   Anish Lohani — portfolio design system v3
   Graphic novel aesthetic. Real images, purple/exotic palette,
   editorial layout with photographic depth.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --bg: #0A0812;
  --bg-2: #110E1A;
  --bg-3: #1A1525;
  --card: #13101C;
  --card-hover: #1C1728;
  --ink: #F0ECF5;
  --ink-2: #B8B0C8;
  --ink-3: #7A7090;
  --accent: #9B5CFF;
  --accent-2: #FF6B9D;
  --accent-3: #00D4AA;
  --accent-light: #B580FF;
  --accent-glow: rgba(155, 92, 255, 0.15);
  --accent-glow-strong: rgba(155, 92, 255, 0.3);
  --pink-glow: rgba(255, 107, 157, 0.15);
  --teal-glow: rgba(0, 212, 170, 0.12);
  --line: #2A2438;
  --line-strong: #F0ECF5;
  --noise-opacity: 0.03;

  /* Image URLs */
  --img-hero: url('https://images.unsplash.com/photo-1576091160550-2173dba999ef?w=1920&q=80');
  --img-texture-1: url('https://images.unsplash.com/photo-1552072092-7f9b8d63efcb?w=1920&q=80');
  --img-texture-2: url('https://images.unsplash.com/photo-1618517048289-4646902edaf5?w=1920&q=80');
  --img-lab: url('https://images.unsplash.com/photo-1620502536058-1191b9b1ffe9?w=1920&q=80');
  --img-purple: url('https://images.unsplash.com/photo-1579546929518-9e396f3cc809?w=1920&q=80');
  --img-cell: url('https://images.unsplash.com/photo-1532012699269-fb17fd750f6a?w=1920&q=80');

  --font-serif: "Instrument Serif", Georgia, serif;
  --font-sans: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;

  --header-h: 72px;
  --pad-x: clamp(1.25rem, 5vw, 4.5rem);
  --sec-pad: clamp(4rem, 8vw, 7rem);
}

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

html {
  scroll-behavior: auto;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

html.no-lenis { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.4s ease, color 0.4s ease;
}

::selection { background: var(--accent); color: var(--bg); }

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

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

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

.mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

strong { font-weight: 600; }

/* ---------- Grain ---------- */
.noise {
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  transform: scaleX(0);
  transform-origin: left;
  z-index: 120;
  box-shadow: 0 0 16px var(--accent-glow-strong);
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0 var(--pad-x);
  height: var(--header-h);
  background: rgba(10, 8, 18, 0.8);
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--accent);
}

.site-header.is-scrolled::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-glow-strong), transparent);
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: 0.005em;
  white-space: nowrap;
}

.brand-dot { color: var(--accent-2); }

.brand:hover .brand-dot {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-nav {
  display: flex;
  gap: clamp(1.2rem, 2.6vw, 2.4rem);
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-2);
  position: relative;
  padding: 0.2rem 0;
  transition: color 0.25s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.3s ease;
}

.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after { width: 100%; }
.site-nav a.is-active { color: var(--accent); }
.site-nav a.is-active::after { width: 100%; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--accent);
  border-radius: 0;
  background: transparent;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.btn:hover {
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn:hover::before { opacity: 1; }

.btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn .btn-label,
.btn .btn-arrow {
  position: relative;
  z-index: 1;
}

.btn-arrow { transition: transform 0.3s ease; }
.btn:hover .btn-arrow { transform: translate(2px, -2px); }

.btn-big {
  padding: 1.15rem 2.1rem;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
}

/* ============================================================
   LIGHT THEME — Complete overrides
   ============================================================ */
html[data-theme="light"] {
  --bg: #F5F0E8;
  --bg-2: #EDE6D8;
  --bg-3: #E0D8C8;
  --card: #FDFBF6;
  --card-hover: #FFFEFA;
  --ink: #1A1520;
  --ink-2: #4A4458;
  --ink-3: #7A7290;
  --accent: #7B3FD9;
  --accent-2: #E04580;
  --accent-3: #00B894;
  --accent-light: #9B6EEB;
  --accent-glow: rgba(123, 63, 217, 0.1);
  --accent-glow-strong: rgba(123, 63, 217, 0.2);
  --pink-glow: rgba(224, 69, 128, 0.1);
  --teal-glow: rgba(0, 184, 148, 0.08);
  --line: #D4CCBC;
  --line-strong: #1A1520;
  --noise-opacity: 0.02;
}

html[data-theme="light"] .site-header {
  background: rgba(245, 240, 232, 0.88);
  border-bottom-color: var(--line);
}

html[data-theme="light"] body {
  background: var(--bg);
  color: var(--ink);
}

html[data-theme="light"] .hero::after {
  background:
    linear-gradient(180deg, rgba(245, 240, 232, 0.3) 0%, rgba(245, 240, 232, 0.6) 50%, var(--bg) 100%),
    radial-gradient(ellipse 80% 60% at 70% 30%, rgba(123, 63, 217, 0.08) 0%, transparent 60%);
}

html[data-theme="light"] .image-panel img {
  filter: saturate(0.9) brightness(1.05);
}

html[data-theme="light"] .image-panel:hover img {
  filter: saturate(1) brightness(1.1);
}

html[data-theme="light"] .image-panel::after {
  background: linear-gradient(180deg, transparent 60%, rgba(245, 240, 232, 0.7) 100%);
}

html[data-theme="light"] .image-break img {
  opacity: 0.6;
  filter: saturate(0.7) brightness(1.1);
}

html[data-theme="light"] .card {
  background: var(--card);
}

html[data-theme="light"] .card::before {
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 50%);
}

html[data-theme="light"] .stat {
  background: var(--card);
}

html[data-theme="light"] .tool-group {
  background: var(--card);
}

html[data-theme="light"] .marquee {
  background: linear-gradient(90deg, var(--bg-2), var(--bg), var(--bg-2));
}

html[data-theme="light"] .noise {
  opacity: 0.015;
}

html[data-theme="light"] .watermark {
  -webkit-text-stroke-color: var(--line);
  opacity: 0.15;
}

html[data-theme="light"] .site-footer {
  background: var(--bg-2);
}

/* Theme toggle */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.theme-toggle:hover {
  background: var(--accent);
  color: var(--bg);
  transform: rotate(12deg) scale(1.05);
}

.theme-toggle svg {
  width: 17px; height: 17px;
  grid-area: 1 / 1;
  transition: opacity 0.3s ease, transform 0.4s ease;
}

/* In dark mode: show sun icon (click to go light). In light mode: show moon icon (click to go dark). */
.theme-toggle .icon-moon { opacity: 1; transform: rotate(0) scale(1); }
.theme-toggle .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0.8); }
html[data-theme="dark"] .theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg) scale(0.8); }
html[data-theme="dark"] .theme-toggle .icon-sun { opacity: 1; transform: rotate(0) scale(1); }

/* ============================================================
   HERO — Full-bleed image background
   ============================================================ */
.hero {
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-h) + 4rem) var(--pad-x) 0;
  overflow: hidden;
}

/* Real photo background */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background: var(--img-hero) center/cover no-repeat;
  opacity: 0.35;
  filter: saturate(0.7);
}

/* Gradient overlay to make text readable */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(10, 8, 18, 0.4) 0%, rgba(10, 8, 18, 0.7) 50%, var(--bg) 100%),
    radial-gradient(ellipse 80% 60% at 70% 30%, rgba(155, 92, 255, 0.12) 0%, transparent 60%);
}

.hero-outer {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.4rem;
  color: var(--ink-2);
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--line);
  padding-bottom: 1rem;
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.pulse-dot {
  width: 8px; height: 8px;
  background: var(--accent-3);
  position: relative;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border: 1px solid var(--accent-3);
  animation: pulse 2.2s ease-out infinite;
}

@keyframes pulse {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(1.7); opacity: 0; }
}

/* HERO MAIN — text + helix side by side at same level */
.hero-main {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}

.hero-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(3rem, 8.6vw, 7.4rem);
  line-height: 1.0;
  letter-spacing: -0.015em;
}

.hero-title .h-line { display: block; }

.em-line,
.hero-title em,
.helix-title em,
.contact-title em {
  font-style: italic;
  color: var(--accent-2);
  text-shadow: 0 0 50px rgba(255, 107, 157, 0.3);
}

.hero-title .em-word {
  font-style: italic;
  color: var(--accent-2);
  text-shadow: 0 0 50px rgba(255, 107, 157, 0.3);
}

/* RNA helix — right side, aligned with text */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: clamp(120px, 14vw, 180px);
  padding-bottom: 0.4rem;
  border-left: 1px solid var(--line);
  padding-left: clamp(1rem, 2vw, 1.5rem);
}

.hero-helix {
  position: relative;
  width: 100%;
  height: clamp(280px, 40vh, 400px);
  overflow: hidden;
}

.helix-loop {
  display: flex;
  flex-direction: column;
  height: 200%;
  animation: helixLoop 16s linear infinite;
  will-change: transform;
}

.helix-loop-item { display: block; width: 100%; height: 50%; }

@keyframes helixLoop {
  to { transform: translateY(-50%); }
}

.helix-strand { fill: none; }

.helix-strand-a {
  stroke: var(--accent);
  stroke-width: 2;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.helix-strand-b {
  stroke: var(--accent-2);
  stroke-width: 1.2;
  opacity: 0.5;
}

.helix-rung {
  stroke: var(--ink-3);
  stroke-width: 1;
  opacity: 0.4;
}

.fig-note {
  margin: 0.7rem 0 0;
  color: var(--ink-3);
}

.hero-foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-top: clamp(2rem, 4vw, 3.5rem);
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
}

.hero-sub {
  max-width: 46ch;
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: none;
  color: var(--ink-2);
  line-height: 1.9;
}

.hero-sub strong { color: var(--ink); font-weight: 500; }

.hero-scroll {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--ink-2);
  transition: color 0.25s ease;
  flex-shrink: 0;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.hero-scroll:hover { color: var(--accent); border-bottom-color: var(--accent); }

.hero-scroll-line {
  width: 56px; height: 1px;
  background: var(--ink-3);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: translateX(-100%);
  animation: scrollline 2.2s steps(6, end) infinite;
}

@keyframes scrollline {
  0% { transform: translateX(-100%); }
  60%, 100% { transform: translateX(100%); }
}

/* Nucleotide rail */
.seq-tape {
  position: absolute;
  right: var(--pad-x);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-3);
  opacity: 0.5;
  user-select: none;
  pointer-events: none;
}

.seq-tape span:nth-child(2n) {
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow);
}

.marquee-track .seq-glyph {
  font-style: normal;
  color: var(--accent);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
}

/* ============================================================
   MARQUEE — image strip
   ============================================================ */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.05rem 0;
  overflow: hidden;
  position: relative;
  background: linear-gradient(90deg, var(--bg-2), var(--bg), var(--bg-2));
}

.marquee::before,
.marquee::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}

.marquee::before { left: 0; background: linear-gradient(90deg, var(--bg), transparent); }
.marquee::after { right: 0; background: linear-gradient(270deg, var(--bg), transparent); }

.marquee-track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: marquee 32s linear infinite;
  will-change: transform;
}

.marquee-track > * {
  flex-shrink: 0;
  margin-right: 2.4rem;
}

.marquee:hover .marquee-track { animation-play-state: paused; }

.marquee-track span {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  color: var(--ink);
  white-space: nowrap;
  transition: color 0.3s ease;
}

.marquee-track span:hover { color: var(--accent); }

.marquee-track i {
  font-style: normal;
  color: var(--accent);
  font-size: 0.9rem;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ============================================================
   SECTIONS — with image backgrounds
   ============================================================ */
.section {
  position: relative;
  isolation: isolate;
  padding: var(--sec-pad) var(--pad-x);
  max-width: 1180px;
  margin: 0 auto;
  scroll-margin-top: calc(var(--header-h) + 0.5rem);
}

/* Section photo backgrounds */
.section-photo {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}

.section-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.08;
  filter: saturate(0.5);
}

.section-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg) 0%, transparent 20%, transparent 80%, var(--bg) 100%);
}

/* Watermark */
.watermark {
  position: absolute;
  z-index: -1;
  top: 1.4rem;
  right: -0.6rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(5.5rem, 15vw, 12rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--line);
  opacity: 0.25;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  letter-spacing: -0.02em;
}

.section:hover .watermark { opacity: 0.4; }

.watermark-right { right: auto; left: -0.6rem; }

.watermark-hero {
  top: auto;
  bottom: -2.5rem;
  right: 6vw;
  opacity: 0.2;
}

.section-head {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.5rem;
  align-items: baseline;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.4rem;
}

.section-index { color: var(--accent); padding-top: 0.5rem; }
.section-label { margin: 0 0 0.8rem; color: var(--ink-3); }

.section-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.008em;
  max-width: 26ch;
}

/* ============================================================
   IMAGE BLOCKS — Graphic novel panels
   ============================================================ */
.image-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  margin: 2rem 0;
}

.image-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1), filter 0.6s ease;
  filter: saturate(0.8) brightness(0.9);
}

.image-panel:hover img {
  transform: scale(1.05);
  filter: saturate(1.1) brightness(1);
}

.image-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 8, 18, 0.6) 100%);
  pointer-events: none;
}

.image-panel-caption {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  z-index: 1;
  transform: translateY(8px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.image-panel:hover .image-panel-caption {
  transform: translateY(0);
  opacity: 1;
}

/* Image panel glow border on hover */
.image-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  z-index: 2;
  pointer-events: none;
  transition: all 0.4s ease;
}

.image-panel:hover::before {
  border-color: var(--accent);
  box-shadow: inset 0 0 30px var(--accent-glow);
}

/* Image panel corner accent */
.image-panel .image-panel-caption::before {
  content: "— ";
  color: var(--accent);
}

/* Large hero-style image block */
.image-panel-large {
  height: 400px;
}

/* Portrait panel — keeps the photo's natural 3:4 ratio */
.portrait-panel {
  height: auto;
  aspect-ratio: 3 / 4;
  max-width: 400px;
  margin-inline: auto;
  --t: #C084FC;
  --t-2: #FF6B9D;
  --t-soft: rgba(192, 132, 252, 0.18);
  --t-line: rgba(192, 132, 252, 0.4);
  border-radius: 18px 18px 18px 6px;
  outline: 1px solid var(--line);
  outline-offset: 4px;
  transform: rotate(-1deg);
  transition: all 0.45s cubic-bezier(0.23, 1, 0.32, 1);
}

html[data-theme="light"] .portrait-panel {
  --t: #7B3FD9;
  --t-2: #E04580;
  --t-soft: rgba(123, 63, 217, 0.14);
  --t-line: rgba(123, 63, 217, 0.42);
}

.portrait-panel:hover {
  transform: rotate(0deg) translateY(-4px);
  border-color: var(--t-line);
  outline-color: var(--t-line);
  box-shadow: 0 14px 40px var(--t-soft);
}

.portrait-orbit { opacity: 0.5; }

/* Specimen tag — top-left */
.p-specimen {
  position: absolute;
  top: 0.85rem;
  left: 0.95rem;
  z-index: 3;
  padding: 0.28rem 0.55rem;
  background: rgba(10, 8, 18, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid var(--t-line);
  color: var(--t);
  font-size: 0.56rem;
  letter-spacing: 0.16em;
}

html[data-theme="light"] .p-specimen {
  background: rgba(245, 240, 232, 0.7);
}

.portrait-ruler { z-index: 3; }

/* Caption as a rubber stamp */
.portrait-panel .image-panel-caption {
  left: 50%;
  right: auto;
  width: max-content;
  max-width: calc(100% - 2rem);
  transform: translateX(-50%) translateY(8px) rotate(-1.5deg);
  text-align: center;
  color: var(--t);
  background: rgba(10, 8, 18, 0.6);
  border: 1px solid var(--t-line);
  padding: 0.3rem 0.7rem;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

html[data-theme="light"] .portrait-panel .image-panel-caption {
  background: rgba(245, 240, 232, 0.78);
}

.portrait-panel:hover .image-panel-caption {
  transform: translateX(-50%) translateY(0) rotate(-1.5deg);
}

/* Medium image block */
.image-panel-medium {
  height: 280px;
}

/* Small inline image */
.image-panel-small {
  height: 180px;
}

/* Full-bleed image break */
.image-break {
  position: relative;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  height: 300px;
  overflow: hidden;
}

.image-break img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  filter: saturate(0.6);
}

.image-break::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, var(--bg) 0%, transparent 30%, transparent 70%, var(--bg) 100%),
    linear-gradient(90deg, var(--bg) 0%, transparent 20%, transparent 80%, var(--bg) 100%);
}

.image-break-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 1;
}

.image-break-text {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-style: italic;
  color: var(--ink);
  text-align: center;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
  padding: 1.5rem 2rem;
  background: rgba(10, 8, 18, 0.3);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.image-break:hover .image-break-text {
  background: rgba(10, 8, 18, 0.5);
  border-color: var(--accent);
}

/* ============================================================
   CARDS — with image backgrounds
   ============================================================ */
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  padding: clamp(1.5rem, 3vw, 2.1rem);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.card:hover::before { opacity: 1; }

/* Card with image */
.card-image {
  position: relative;
  height: 200px;
  overflow: hidden;
  margin: -1.5rem -1.5rem 1.2rem -1.5rem;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-image::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(transparent, var(--card));
}

.card-image::before {
  content: "";
  position: absolute;
  inset: 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.4s ease;
  z-index: 1;
}

.card:hover .card-image::before {
  border-bottom-color: var(--accent);
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
  color: var(--ink-3);
}

.card-tag { color: var(--accent); }

.card-title {
  margin: 0 0 0.8rem;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.5rem, 2.7vw, 2rem);
  line-height: 1.12;
}

.card-title.sm { font-size: clamp(1.2rem, 2vw, 1.45rem); }

.card-body {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.95rem;
  line-height: 1.75;
}

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

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  margin-top: 1.4rem;
}

.card-links a,
.projects-foot a {
  color: var(--ink-2);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.card-links a:hover,
.projects-foot a:hover { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   RESEARCH GRID
   ============================================================ */
.research-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 1.4rem;
  align-items: stretch;
}

.research-side { display: grid; gap: 1.4rem; }

.now-list {
  list-style: none;
  margin: 0.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.now-list li {
  font-size: 0.92rem;
  color: var(--ink-2);
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
  line-height: 1.5;
  transition: color 0.25s ease;
}

.now-list li:hover { color: var(--ink); }
.now-list em { font-family: var(--font-serif); font-style: italic; color: var(--ink); font-size: 1.02em; }
.now-mark { color: var(--accent); }

/* ============================================================
   HELIX INTERLUDE — simplified with image
   ============================================================ */
.helix-interlude {
  position: relative;
  min-height: auto;
  padding: clamp(4rem, 8vw, 7rem) var(--pad-x);
  overflow: hidden;
}

.helix-interlude-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.helix-interlude-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  filter: saturate(0.5);
}

.helix-interlude-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg) 0%, transparent 25%, transparent 75%, var(--bg) 100%);
}

.helix-pin {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.helix-copy { position: relative; z-index: 1; }

.helix-title {
  margin: 0 0 1.4rem;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.5rem, 5.6vw, 4.8rem);
  line-height: 1.0;
  letter-spacing: -0.014em;
}

.helix-sub {
  margin: 0;
  max-width: 42ch;
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.85;
}

.helix-sub strong { color: var(--accent); }

.helix-hint {
  margin: 2rem 0 0;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.helix-hint::after {
  content: "";
  width: 46px;
  height: 1px;
  background: var(--accent);
  animation: scrollline 2.2s steps(6, end) infinite;
}

/* Helix image instead of SVG animation */
.helix-stage {
  position: relative;
  display: grid;
  place-items: center;
}

.helix-image {
  width: 100%;
  max-width: 400px;
  border: 1px solid var(--line);
  overflow: hidden;
}

.helix-image img {
  width: 100%;
  height: auto;
  display: block;
  filter: saturate(0.8);
  transition: filter 0.4s ease;
}

.helix-image:hover img {
  filter: saturate(1.2);
}

.base-float {
  position: absolute;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  user-select: none;
  text-shadow: 0 0 20px var(--accent-glow);
  animation: baseFloat 6s ease-in-out infinite alternate;
}

.bf-a { top: 14%; left: 8%; animation-delay: 0s; }
.bf-u { top: 66%; left: 4%; color: var(--accent-2); animation-delay: 1.5s; }
.bf-g { top: 24%; right: 10%; color: var(--accent-3); animation-delay: 3s; }
.bf-c { top: 72%; right: 6%; animation-delay: 4.5s; }

@keyframes baseFloat {
  0% { transform: translateY(0) rotate(0deg); }
  100% { transform: translateY(-8px) rotate(3deg); }
}

/* ============================================================
   GEL DIVIDERS
   ============================================================ */
.gel {
  display: flex;
  gap: clamp(0.6rem, 2vw, 1.4rem);
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(1.6rem, 3.5vw, 2.6rem) var(--pad-x);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
}

.gel-lane {
  position: relative;
  flex: 1;
  height: clamp(60px, 8vw, 88px);
}

.gel-lane::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 1px;
  background: var(--line);
}

.gel-lane i {
  position: absolute;
  left: 50%;
  width: clamp(3px, 0.4vw, 5px);
  background: var(--accent);
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.8s ease;
}

.gel.is-run .gel-lane i { opacity: 0.9; }
.gel-lane:nth-child(2n) i { transition-delay: 0.12s; }
.gel-lane:nth-child(3n) i { transition-delay: 0.24s; }

/* ============================================================
   FIGURES
   ============================================================ */
.figure-row {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1.4rem;
  margin-top: 1.6rem;
}

.figure-card { margin: 0; }

.dogma-diagram,
.trna-diagram {
  display: block;
  width: 100%;
  height: auto;
  margin: 0.6rem 0 0.4rem;
}

.trna-diagram { max-width: 250px; margin-inline: auto; }

.cd-dna path { stroke: var(--accent); stroke-width: 1.8; fill: none; }
.cd-dna line, .cd-protein line { stroke: var(--line-strong); stroke-width: 1.2; }
.cd-arrow { stroke: var(--ink-2); stroke-width: 1.6; color: var(--ink-2); }
.cd-mrna path { stroke: var(--ink); stroke-width: 2.2; fill: none; }
.cd-mrna circle { fill: var(--accent); }
.cd-protein circle { fill: var(--ink); }

.cd-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  fill: var(--ink-3);
}

.cd-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  fill: var(--accent);
}

.trna line, .trna path { stroke: var(--ink); stroke-width: 1.8; fill: none; }
.trna-loop { stroke: var(--accent); stroke-width: 1.8; fill: none; }
.trna-loop-sm { stroke-width: 1.3; opacity: 0.6; }
.trna-tick line { stroke: var(--accent); stroke-width: 1.8; }
.trna-hub { fill: var(--accent); }

.trna-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  fill: var(--ink-3);
}

/* Splice diagram */
.splice-diagram {
  display: block;
  width: 100%;
  height: auto;
  margin: 0.4rem 0 1.2rem;
}

.s-gene line, .s-iso line { stroke: var(--line-strong); stroke-width: 1.4; }
.s-exon, .s-box { fill: var(--accent); }
.s-box { opacity: 0.8; }

.s-junction {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.2;
  stroke-dasharray: 3 3;
  opacity: 0.7;
}

.s-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  fill: var(--ink-3);
}

.s-label-strong { fill: var(--accent); }

/* Base-pair annotations */
.base-tag {
  color: var(--accent);
  font-size: 0.62em;
  letter-spacing: 0.14em;
  vertical-align: 0.2em;
  white-space: nowrap;
}

.section-index .base-tag { margin-left: 0.7rem; }

/* Tags */
.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.3rem 0 0;
  padding: 0;
}

.tag-list li,
.tag-list span {
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--line);
  color: var(--ink-2);
  transition: all 0.25s cubic-bezier(0.23, 1, 0.32, 1);
}

.tag-list li:hover,
.tag-list span:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--accent-glow);
}

/* ============================================================
   EXPERIENCE SUBSECTIONS
   ============================================================ */
.experience-subsection {
  margin-bottom: 3rem;
}

.experience-subtitle {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.5rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
}

/* ============================================================
   TIMELINE
   ============================================================ */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--accent-glow-strong), transparent 30%, transparent 70%, var(--accent-glow-strong));
}

.tl-item {
  position: relative;
  padding: 0 0 clamp(2.6rem, 5vw, 3.6rem) clamp(1.7rem, 3vw, 2.6rem);
}

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

.tl-item::before {
  content: "";
  position: absolute;
  left: -5px; top: 6px;
  width: 9px; height: 9px;
  background: var(--bg);
  border: 2px solid var(--accent);
  transition: all 0.3s ease;
  z-index: 1;
}

.tl-item:hover::before {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  transform: scale(1.3);
}

.tl-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.7rem;
  color: var(--ink-3);
}

.tl-role { color: var(--accent); }

.tl-org {
  margin: 0 0 0.2rem;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  line-height: 1.2;
}

.tl-loc { margin: 0 0 0.9rem; color: var(--ink-3); }

.tl-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
  color: var(--ink-2);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 62ch;
}

.tl-points li { position: relative; padding-left: 1.15rem; }
.tl-points li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }

/* Beyond the bench */
.beyond {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  padding-top: 2.2rem;
  border-top: 1px solid var(--line);
}

.beyond-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem 2.5rem;
  margin-top: 1.4rem;
}

.beyond-grid p { margin: 0; color: var(--ink-2); font-size: 0.95rem; line-height: 1.7; }
.beyond-grid strong { color: var(--ink); }

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 3.5rem;
}

.p-card {
  position: relative;
  display: block;
  padding: 1.9rem 0.4rem 2.1rem;
  border-top: 1px solid var(--line);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.p-card:nth-child(even) { padding-left: 1.6rem; }

.p-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.1rem;
  color: var(--ink-3);
}

.p-arrow {
  font-size: 1.1rem;
  color: var(--accent);
  opacity: 0;
  transform: translate(-6px, 6px);
  transition: all 0.3s ease;
}

.p-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.45rem, 2.6vw, 1.85rem);
  line-height: 1.16;
  transition: color 0.3s ease;
}

.p-desc {
  margin: 0 0 1.1rem;
  color: var(--ink-2);
  font-size: 0.93rem;
  line-height: 1.7;
  max-width: 46ch;
}

.p-card:hover .p-title { color: var(--accent); }
.p-card:hover .p-arrow { opacity: 1; transform: translate(0, 0); }
.p-card:hover { background: var(--accent-glow); padding-left: 1.1rem; }
.p-card:nth-child(even):hover { padding-left: 2.7rem; }

.projects-foot { margin: 2.6rem 0 0; text-align: right; }

/* ============================================================
   TOOLBOX
   ============================================================ */
.toolbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem 2rem;
}

.tool-group {
  border: 1px solid var(--line);
  padding: 1.8rem 1.9rem 1.9rem;
  background: var(--card);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
}

.tool-group::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.tool-group:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.tool-group:hover::before { opacity: 1; }

.tool-group-title { margin: 0 0 1.2rem; color: var(--accent); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.05em; }

.tool-pills {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tool-pills li {
  padding: 0.5rem 1rem;
  border: 1px solid var(--line);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--ink-2);
  transition: all 0.25s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
  background: transparent;
}

.tool-pills li::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tool-pills li:hover::before { opacity: 1; }

.tool-pills li:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--accent-glow);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: start;
}

.about-main p {
  margin: 0 0 1.3rem;
  font-size: 1.04rem;
  line-height: 1.8;
  color: var(--ink-2);
  max-width: 62ch;
}

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

.edu { margin-top: 2.4rem; border-top: 1px solid var(--line); }

.edu-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.edu-main h3 { margin: 0 0 0.2rem; font-family: var(--font-serif); font-weight: 400; font-size: 1.35rem; }
.edu-main p { margin: 0; color: var(--ink-3); font-size: 0.7rem; }
.edu-note { color: var(--ink-3); font-size: 0.66rem; text-align: right; max-width: 30ch; }

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

.stat {
  border: 1px solid var(--line);
  padding: 1.6rem 1.5rem;
  background: var(--card);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
}

.stat::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.stat:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.stat:hover::before { opacity: 1; }

.stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 3.8rem);
  line-height: 1;
  color: var(--accent);
  margin-bottom: 0.7rem;
  text-shadow: 0 0 40px var(--accent-glow);
}

.stat-label { color: var(--ink-3); font-size: 0.66rem; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  text-align: left;
  position: relative;
}

.contact::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 30% 50%, var(--accent-glow-strong) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 80%, var(--pink-glow) 0%, transparent 50%);
}

.contact .section-label { color: var(--accent); }

.contact-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.8rem, 7.8vw, 6rem);
  line-height: 1.0;
  letter-spacing: -0.014em;
}

.contact-sub {
  margin: 1.6rem 0 2.4rem;
  color: var(--ink-2);
  font-size: 1.02rem;
  max-width: 40ch;
}

.contact-actions { margin-bottom: 2.6rem; }

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem 2.4rem;
  border-top: 1px solid var(--line);
  padding-top: 1.6rem;
}

.contact-links a {
  color: var(--ink-2);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: all 0.25s ease;
}

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

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.6rem var(--pad-x);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-glow-strong), transparent);
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 2rem;
  color: var(--ink-3);
}

.back-top { color: var(--ink-2); transition: color 0.25s ease; }
.back-top:hover { color: var(--accent); }

/* ============================================================
   PERIODIC NAMEPLATE — “ANiSH”
   ============================================================ */
.periodic-block {
  margin: clamp(2.2rem, 4vw, 3.2rem) 0 0;
}

/* Nameplate inside the hero — sits between title and hero footer */
.hero-periodic {
  margin-top: clamp(1.8rem, 3.5vw, 2.8rem);
}

.periodic-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(0.9rem, 2vw, 1.5rem);
}

/* ---- Element themes — each element gets its own atmosphere ---- */
.p-tile-a  { --t: #C084FC; --t-2: #FF6B9D; --t-soft: rgba(192, 132, 252, 0.16); --t-line: rgba(192, 132, 252, 0.38); }
.p-tile-ni { --t: #5EEAD4; --t-2: #34D399; --t-soft: rgba(94, 234, 212, 0.13);  --t-line: rgba(94, 234, 212, 0.32); }
.p-tile-s  { --t: #FCD34D; --t-2: #F59E0B; --t-soft: rgba(252, 211, 77, 0.13); --t-line: rgba(252, 211, 77, 0.34); }
.p-tile-h  { --t: #7DD3FC; --t-2: #38BDF8; --t-soft: rgba(125, 211, 252, 0.13); --t-line: rgba(125, 211, 252, 0.32); }

html[data-theme="light"] .p-tile-a  { --t: #7B3FD9; --t-2: #E04580; --t-soft: rgba(123, 63, 217, 0.12);  --t-line: rgba(123, 63, 217, 0.4); }
html[data-theme="light"] .p-tile-ni { --t: #0D9488; --t-2: #14B8A6; --t-soft: rgba(13, 148, 136, 0.1);  --t-line: rgba(13, 148, 136, 0.35); }
html[data-theme="light"] .p-tile-s  { --t: #B45309; --t-2: #D97706; --t-soft: rgba(180, 83, 9, 0.1);    --t-line: rgba(180, 83, 9, 0.32); }
html[data-theme="light"] .p-tile-h  { --t: #0369A1; --t-2: #0284C7; --t-soft: rgba(3, 105, 161, 0.1);   --t-line: rgba(3, 105, 161, 0.32); }

/* ---- Tile frame: hand-set on the tray, double frame, sharp bottom-left ---- */
.p-tile {
  position: relative;
  flex: 1 1 clamp(150px, 20vw, 205px);
  max-width: 230px;
  aspect-ratio: 0.74;
  border: 1px solid var(--line);
  outline: 1px solid var(--line);
  outline-offset: 4px;
  border-radius: 16px 16px 16px 4px;
  overflow: hidden;
  perspective: 900px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.p-tile-a  { transform: rotate(-1.1deg); }
.p-tile-ni { transform: rotate(0.9deg); }
.p-tile-s  { transform: rotate(-0.7deg); }
.p-tile-h  { transform: rotate(1.1deg); }

.p-tile:hover {
  border-color: var(--t, var(--accent));
  outline-color: var(--t-line);
  transform: translateY(-6px) rotate(0deg);
  box-shadow: 0 14px 40px var(--t-soft, var(--accent-glow));
}

.p-tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 0%, var(--t-soft) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 3;
}

.p-tile:hover::before { opacity: 1; }

/* ---- Flip mechanics ---- */
.p-tile-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(0.23, 1, 0.32, 1);
}

.p-tile:hover .p-tile-inner,
.p-tile:focus-visible .p-tile-inner,
.p-tile.is-flipped .p-tile-inner {
  transform: rotateY(180deg);
}

.p-tile-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* ---- Front face: nebula atmospheres ---- */
.p-tile-front {
  padding: clamp(1rem, 1.8vw, 1.35rem);
  background:
    radial-gradient(130% 100% at 85% 8%, var(--t-soft) 0%, transparent 55%),
    radial-gradient(100% 90% at 8% 92%, var(--t-soft) 0%, transparent 50%),
    linear-gradient(165deg, var(--bg-3) 0%, var(--card) 100%);
}

.p-num {
  position: absolute;
  top: 0.8rem;
  left: 0.95rem;
  color: var(--ink-3);
  font-size: 0.66rem;
  z-index: 2;
}

/* Atomic orbit motif */
.p-orbit {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}

.p-orbit-ring {
  position: absolute;
  border: 1px solid var(--t-line);
  border-radius: 50%;
  transform: scaleY(0.5) rotate(-14deg);
}

.p-orbit-ring-1 {
  width: 72%;
  height: 72%;
  border-style: dashed;
  animation: orbitSpin 18s linear infinite;
}

.p-orbit-ring-2 {
  width: 88%;
  height: 88%;
  opacity: 0.4;
  transform: scaleY(0.5) rotate(24deg);
}

.p-orbit-nucleus {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--t);
  box-shadow: 0 0 12px var(--t), 0 0 26px var(--t-soft);
}

@keyframes orbitSpin {
  to { transform: scaleY(0.5) rotate(calc(-14deg + 360deg)); }
}

/* ---- Symbol: glowing, element-coloured ---- */
.p-symbol {
  position: relative;
  z-index: 1;
  margin-top: clamp(1.3rem, 2.5vw, 1.8rem);
  text-align: center;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(2.5rem, 4.3vw, 3.3rem);
  line-height: 1;
  color: var(--t);
  letter-spacing: -0.01em;
  text-shadow: 0 0 18px var(--t-soft), 0 0 46px var(--t-soft);
}

.p-tile-a .p-symbol {
  background: linear-gradient(135deg, var(--t), var(--t-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 16px var(--t-soft));
}

/* ---- Name: serif, editorial ---- */
.p-name {
  position: relative;
  z-index: 1;
  margin-top: 0.4rem;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.15;
  color: var(--ink);
}

.p-mass {
  position: relative;
  z-index: 1;
  margin-top: 0.5rem;
  text-align: center;
  color: var(--ink-3);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
}

.p-config {
  position: relative;
  z-index: 1;
  margin-top: 0.26rem;
  text-align: center;
  color: var(--ink-2);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
}

.p-meta {
  position: relative;
  z-index: 1;
  margin-top: 0.3rem;
  text-align: center;
  color: var(--ink-3);
  font-size: 0.56rem;
  letter-spacing: 0.14em;
}

/* ---- Classification: rubber stamp ---- */
.p-class {
  position: relative;
  z-index: 1;
  margin-top: auto;
  align-self: center;
  padding: 0.32rem 0.65rem;
  border: 1px solid var(--t-line);
  background: var(--t-soft);
  box-shadow: inset 0 0 10px var(--t-soft);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--t);
  transform: rotate(-2.5deg);
}

/* Specimen ruler along the bottom edge */
.p-ruler {
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.4rem;
  height: 4px;
  opacity: 0.55;
  background: repeating-linear-gradient(90deg, var(--t) 0 1px, transparent 1px 4px, var(--t) 4px 5px, transparent 5px 7px);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 25%, #000 75%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 25%, #000 75%, transparent);
  pointer-events: none;
}

/* ---- Flip hint ---- */
.p-flip-hint {
  position: absolute;
  top: 0.7rem;
  right: 0.85rem;
  color: var(--t, var(--ink-3));
  font-size: 0.8rem;
  line-height: 1;
  opacity: 0.4;
  z-index: 2;
  transition: opacity 0.3s ease, transform 0.4s ease;
}

.p-tile:hover .p-flip-hint,
.p-tile:focus-visible .p-flip-hint {
  opacity: 1;
  transform: rotate(180deg);
}

/* ---- Back face: fun fact, themed ---- */
.p-tile-back {
  transform: rotateY(180deg);
  padding: clamp(1rem, 1.8vw, 1.4rem);
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 0.7rem;
  background:
    radial-gradient(120% 90% at 20% 12%, var(--t-soft) 0%, transparent 55%),
    linear-gradient(165deg, var(--bg-3) 0%, var(--card) 100%);
}

.p-fact-symbol {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.7rem;
  line-height: 1;
  color: var(--t);
  text-shadow: 0 0 14px var(--t-soft);
  opacity: 0.95;
}

.p-tile-a .p-fact-symbol {
  background: linear-gradient(135deg, var(--t), var(--t-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.p-fact-label {
  color: var(--t);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
}

.p-fact-text {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.82rem;
  line-height: 1.6;
  max-width: 24ch;
}

.periodic-block .fig-note {
  margin-top: 1.2rem;
  text-align: center;
}

.periodic-block .fig-note strong {
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: none; /* keep the “Ni” of ANiSH lowercase */
}

/* ============================================================
   LAB LIST — projects inside the research card
   ============================================================ */
.lab-label {
  margin: 1.6rem 0 0.7rem;
  color: var(--accent);
}

.lab-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.lab-list li {
  position: relative;
  padding-left: 1.3rem;
  color: var(--ink-2);
  font-size: 0.9rem;
  line-height: 1.68;
}

.lab-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.lab-list strong { color: var(--ink); font-weight: 600; }

/* ============================================================
   ABOUT THE LAB — Younis Lab fact sheet
   ============================================================ */
.lab-card { margin-top: 1.6rem; }

.lab-card-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
}

.lab-card-side {
  display: grid;
  gap: 1.4rem;
  border-left: 1px solid var(--line);
  padding-left: clamp(1.5rem, 3vw, 2.2rem);
}

.lab-fact {
  display: grid;
  gap: 0.3rem;
}

.lab-fact-label {
  color: var(--accent);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
}

.lab-fact-value {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.2;
  color: var(--ink);
}

.lab-fact-sub {
  color: var(--ink-3);
  font-size: 0.85rem;
  line-height: 1.55;
}

.lab-card .card-links { margin-top: 0; }

/* Lab card — share the specimen language (nebula, frame, orbit, ruler) */
.lab-card {
  --t: #C084FC;
  --t-2: #FF6B9D;
  --t-soft: rgba(192, 132, 252, 0.13);
  --t-line: rgba(192, 132, 252, 0.3);
  background:
    radial-gradient(120% 100% at 92% 0%, var(--t-soft) 0%, transparent 55%),
    radial-gradient(90% 80% at 0% 100%, var(--t-soft) 0%, transparent 50%),
    var(--card);
  outline: 1px solid var(--line);
  outline-offset: 4px;
  border-radius: 18px 18px 18px 6px;
}

html[data-theme="light"] .lab-card {
  --t: #7B3FD9;
  --t-2: #E04580;
  --t-soft: rgba(123, 63, 217, 0.1);
  --t-line: rgba(123, 63, 217, 0.32);
  background:
    radial-gradient(120% 100% at 92% 0%, var(--t-soft) 0%, transparent 55%),
    radial-gradient(90% 80% at 0% 100%, var(--t-soft) 0%, transparent 50%),
    var(--card);
}

.lab-card .card-top,
.lab-card-grid {
  position: relative;
  z-index: 1;
}

.lab-orbit {
  position: absolute;
  top: 1.4rem;
  right: 1.6rem;
  width: 170px;
  height: 170px;
  inset: auto;
  opacity: 0.35;
  pointer-events: none;
}

.lab-ruler {
  bottom: 1rem;
  z-index: 1;
}

@media (max-width: 900px) {
  .lab-card-grid { grid-template-columns: 1fr; gap: 1.6rem; }
  .lab-card-side {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 1.6rem;
  }
}

/* ============================================================
   MOBILE NAV — full-screen menu
   ============================================================ */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 120;
}

.nav-toggle-bar {
  display: block;
  width: 17px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.35s cubic-bezier(0.23, 1, 0.32, 1), opacity 0.3s ease;
}

body.menu-open .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.menu-open .nav-toggle-bar:nth-child(2) { opacity: 0; }
body.menu-open .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  background: rgba(10, 8, 18, 0.94);
  backdrop-filter: blur(22px) saturate(1.4);
  -webkit-backdrop-filter: blur(22px) saturate(1.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-14px);
  transition: opacity 0.4s ease, transform 0.4s ease, visibility 0s linear 0.4s;
}

html[data-theme="light"] .mobile-menu {
  background: rgba(245, 240, 232, 0.95);
}

.mobile-menu::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 40%, var(--accent-glow-strong) 0%, transparent 60%);
  pointer-events: none;
}

.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}

.mobile-menu-inner {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 0.4rem;
  text-align: center;
  padding: 0 1.5rem;
}

.m-link {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 9.5vw, 3.4rem);
  line-height: 1.2;
  color: var(--ink);
  display: inline-flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 0.2rem 0.6rem;
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.4s ease,
    transform 0.4s cubic-bezier(0.23, 1, 0.32, 1),
    color 0.3s ease,
    font-style 0.3s ease;
}

/* Cascade in on open */
.mobile-menu.is-open .m-link {
  opacity: 1;
  transform: none;
}

.mobile-menu.is-open .m-link:nth-child(1) { transition-delay: 0.06s; }
.mobile-menu.is-open .m-link:nth-child(2) { transition-delay: 0.12s; }
.mobile-menu.is-open .m-link:nth-child(3) { transition-delay: 0.18s; }
.mobile-menu.is-open .m-link:nth-child(4) { transition-delay: 0.24s; }
.mobile-menu.is-open .m-link:nth-child(5) { transition-delay: 0.3s; }

.mobile-menu.is-open .m-link:hover {
  color: var(--accent);
  font-style: italic;
  transform: translateX(6px);
}

.m-link.is-active { color: var(--accent-2); }

/* Say hello button fades in after the links */
.mobile-menu .btn {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-menu.is-open .btn {
  opacity: 1;
  transition-delay: 0.32s;
}

.m-index {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}

.mobile-menu .btn {
  margin-top: 1.4rem;
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
}

@media (min-width: 901px) {
  .mobile-menu { display: none; }
}

body.menu-open { overflow: hidden; }

/* ---------- Reveal states ---------- */
html.js-ready .reveal { opacity: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .site-nav { display: none; }
  .research-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { gap: 0 1.8rem; }
  .seq-tape { display: none; }
  .hero-main { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .helix-pin { grid-template-columns: 1fr; }
  .helix-stage { display: none; }
  .base-float { display: none; }
  .figure-row { grid-template-columns: 1fr; }
  .watermark { font-size: clamp(4rem, 18vw, 7rem); right: -0.2rem; }
  .image-panel-large { height: 250px; }
  .image-panel-medium { height: 200px; }
  .dual-panel { grid-template-columns: 1fr !important; }
}

@media (min-width: 901px) and (max-width: 1240px) {
  .site-nav { gap: 1rem; }
  .site-nav a { font-size: 0.64rem; letter-spacing: 0.12em; }
  .brand { font-size: 1.2rem; }
  .header-actions a.btn:last-of-type { display: none; }
}

@media (max-width: 640px) {
  :root { --header-h: 64px; }
  .header-actions .btn { display: none; }
  .hero { padding-top: calc(var(--header-h) + 2.5rem); }
  .hero-foot { flex-direction: column; align-items: flex-start; }
  .hero-scroll { align-self: flex-end; }
  .projects-grid, .pub-grid { grid-template-columns: 1fr; }
  .p-card:nth-child(even) { padding-left: 0.4rem; }
  .toolbox-grid { grid-template-columns: 1fr; }
  .beyond-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .edu-row { flex-direction: column; gap: 0.4rem; }
  .edu-note { text-align: left; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .image-break { height: 200px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
  .pulse-dot::after, .hero-scroll-line::after, .helix-hint::after { animation: none; }
  html.js-ready .reveal { opacity: 1; }
  .helix-loop { animation: none; }
  .helix-loop-item:nth-child(2) { display: none; }
  .gel-lane i { opacity: 0.9; transition: none; }
  .card:hover, .stat:hover, .tool-group:hover, .p-tile:hover { transform: none; box-shadow: none; }
  .p-tile .p-tile-inner { transition: none; }
  .p-tile:hover .p-tile-inner,
  .p-tile:focus-visible .p-tile-inner { transform: none; }
  .p-flip-hint { display: none; }
  .p-orbit-ring-1 { animation: none; }
  .mobile-menu, .nav-toggle-bar { transition: none; }
  .m-link { opacity: 1; transform: none; transition: none; }
  .base-float { animation: none; }
}

/* ---------- Cursor glow ---------- */
@media (hover: hover) and (pointer: fine) {
  .cursor-glow {
    position: fixed;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow-strong) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
    transform: translate(-50%, -50%);
    mix-blend-mode: screen;
  }
  .cursor-glow.active { opacity: 0.6; }
}

/* ============================================================
   PUBLICATIONS & CONFERENCES
   ============================================================ */
.pub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}

.pub-grid .card {
  display: flex;
  flex-direction: column;
}

.pub-grid .card-links {
  margin-top: auto;
  padding-top: 1.4rem;
}

/* Reserved slot for future talks & publications */
.pub-placeholder {
  background: transparent;
  border: 1px dashed var(--line);
}

.pub-placeholder:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--accent);
}

.pub-placeholder::before { display: none; }

.pub-placeholder-body { margin: auto 0; }

.pub-plus {
  display: inline-block;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.pub-placeholder .card-title { color: var(--ink-3); }
.pub-placeholder .fig-note { margin-top: 1.4rem; }

/* ============================================================
   BLOG PAGE
   ============================================================ */
.blog-hero {
  padding-top: calc(var(--header-h) + 3rem);
}

.blog-note {
  margin: 1.4rem 0 0;
  color: var(--ink-2);
  max-width: 60ch;
}

.blog-watch {
  padding-top: 0;
}

.video-embed {
  position: relative;
  width: 100%;
  max-width: 860px;
  margin: 2rem auto 0;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  background: var(--card);
  overflow: hidden;
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-embed + .fig-note {
  max-width: 860px;
  margin: 1rem auto 0;
}

/* Blog feed posts (rendered by src/blog.js) */
.blog-posts-list {
  display: grid;
  gap: 1.4rem;
}

.blog-post-body {
  margin-top: 1rem;
}

.blog-post-body p {
  margin: 0 0 0.9rem;
  color: var(--ink-2);
  line-height: 1.75;
}

.blog-post-body ul {
  margin: 0 0 0.9rem 1.15rem;
  padding: 0;
  color: var(--ink-2);
  line-height: 1.75;
}

.blog-post-body h4 {
  margin: 1.2rem 0 0.5rem;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.15rem;
}

.blog-post-body a {
  color: var(--accent);
  border-bottom: 1px solid var(--line);
}

.blog-feed-status {
  margin-top: 1.4rem;
  color: var(--ink-3);
}