/* suhailmohebi.com — public lab notebook
   Design language: deep-space dark, aurora gradients, glass surfaces,
   monospace lab annotations. Motion respects prefers-reduced-motion. */

@font-face {
  font-family: "Space Grotesk";
  src: url("/assets/fonts/space-grotesk-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: optional;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("/assets/fonts/jetbrains-mono-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 600;
  font-display: optional;
}

:root {
  --bg: #05060a;
  --bg-2: #0a0d16;
  --ink: #e8ecf4;
  --ink-dim: #9aa3b5;
  --ink-faint: #858fa3;
  --cyan: #5ee6ff;
  --violet: #8b5cf6;
  --lime: #b7ff5e;
  --line: rgba(148, 163, 184, 0.14);
  --glass: rgba(15, 19, 32, 0.55);
  --glass-solid: rgba(15, 19, 32, 0.88);
  --glass-hi: rgba(94, 230, 255, 0.06);
  --radius: 18px;
  --font-sans: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body.palette-open { overflow: hidden; }

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-150%);
  padding: 10px 14px;
  border-radius: 10px;
  color: #04121a;
  background: var(--cyan);
  font-weight: 700;
}
.skip-link:focus { transform: none; }

:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 4px;
}

.mono { font-family: var(--font-mono); }

::selection { background: rgba(94, 230, 255, 0.25); }

/* Keep every unstyled link in the site's cyan system, including visited links. */
a:where(:link, :visited) { color: var(--cyan); }

/* ---------- ambient layers ---------- */

.scroll-progress {
  position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 60;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--lime));
  transform-origin: 0 50%;
  transform: scaleX(var(--scroll-p, 0));
}
@supports (animation-timeline: scroll()) {
  .scroll-progress {
    animation: growX linear both;
    animation-timeline: scroll(root);
  }
  @keyframes growX { from { transform: scaleX(0); } to { transform: scaleX(1); } }
}

.aurora {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  filter: blur(64px) saturate(125%);
  contain: strict;
}
.aurora-blob { position: absolute; border-radius: 50%; opacity: 0.35; }
.a1 { width: 55vw; height: 55vw; left: -12vw; top: -18vw; background: radial-gradient(circle, #123a5e, transparent 65%); animation: drift1 26s ease-in-out infinite alternate; }
.a2 { width: 46vw; height: 46vw; right: -14vw; top: 6vw; background: radial-gradient(circle, #3b1d6e, transparent 65%); animation: drift2 32s ease-in-out infinite alternate; }
.a3 { width: 40vw; height: 40vw; left: 28vw; bottom: -22vw; background: radial-gradient(circle, #0e4a45, transparent 65%); animation: drift1 38s ease-in-out infinite alternate-reverse; }
@keyframes drift1 { to { transform: translate(9vw, 6vh) scale(1.12); } }
@keyframes drift2 { to { transform: translate(-7vw, 9vh) scale(0.92); } }

.grain {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.5; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.06'/%3E%3C/svg%3E");
}

/* ---------- nav ---------- */

.nav {
  position: fixed; top: 14px; left: 50%; transform: translateX(-50%); z-index: 50;
  width: min(1060px, calc(100% - 28px));
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 18px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.nav-brand { min-height: 44px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: 0.02em; display: flex; align-items: center; gap: 8px; }
.brand-hex { color: var(--cyan); }
.brand-dim { color: var(--ink-dim); font-weight: 400; }
.nav-links { display: flex; align-items: center; gap: 20px; }
.nav-links a { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; color: var(--ink-dim); text-decoration: none; font-size: 0.92rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--cyan); }
.nav-links a[aria-current="page"] { color: var(--ink); }
.nav-menu { display: none; position: relative; }
.nav-menu summary {
  min-width: 74px; min-height: 44px; padding: 0 13px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  list-style: none; cursor: pointer; user-select: none;
  color: var(--ink); background: rgba(94,230,255,0.07);
  border: 1px solid var(--line); border-radius: 999px;
  font-size: 0.82rem; font-weight: 600;
}
.nav-menu summary::-webkit-details-marker { display: none; }
.nav-menu summary::after { content: "+"; color: var(--cyan); font-family: var(--font-mono); font-size: 1rem; }
.nav-menu[open] summary::after { content: "−"; }
.nav-menu-panel {
  position: absolute; top: calc(100% + 9px); right: 0; width: min(310px, calc(100vw - 16px));
  padding: 8px; background: #080b13; border: 1px solid rgba(94,230,255,0.24);
  border-radius: 16px; box-shadow: 0 24px 70px rgba(0,0,0,0.55);
}
.nav-menu-panel a, .nav-menu-search {
  width: 100%; min-height: 52px; padding: 0 14px;
  display: flex; align-items: center; justify-content: space-between;
  color: var(--ink-dim); text-decoration: none; background: transparent;
  border: 0; border-bottom: 1px solid var(--line);
  font: 500 0.95rem/1.2 var(--font-sans); text-align: left; cursor: pointer;
}
.nav-menu-panel a::after { content: "→"; color: var(--cyan); font-family: var(--font-mono); }
.nav-menu-panel a[aria-current="page"] { color: var(--ink); }
.nav-menu-panel a:last-child, .nav-menu-panel .nav-menu-search:last-child { border-bottom: 0; }
.nav-menu-search { color: var(--cyan); }
.palette-hint {
  display: inline-flex; align-items: center; gap: 7px;
  min-height: 44px;
  background: rgba(94, 230, 255, 0.07); color: var(--ink-dim);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 12px; font-size: 0.8rem; cursor: pointer;
  font-family: var(--font-sans); transition: border-color 0.2s, color 0.2s;
}
.palette-hint:hover { border-color: var(--cyan); color: var(--ink); }
.kbd {
  font-family: var(--font-mono); font-size: 0.72rem;
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px;
  padding: 1px 5px; color: var(--ink-dim); background: rgba(255,255,255,0.04);
}

/* ---------- hero ---------- */

.hero { position: relative; min-height: 100svh; display: grid; place-items: center; padding: 120px 20px 80px; }
#field { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-inner { position: relative; max-width: 900px; text-align: center; }
.hero-eyebrow { color: var(--lime); font-size: 0.82rem; letter-spacing: 0.08em; margin-bottom: 22px; opacity: 0.9; }
.hero-title { font-size: clamp(2.5rem, 7.2vw, 5rem); line-height: 1.06; font-weight: 700; letter-spacing: -0.02em; }
.gradient-text {
  background: linear-gradient(92deg, var(--cyan) 10%, var(--violet) 55%, var(--lime) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: hueSlide 7s ease-in-out infinite alternate;
}
@keyframes hueSlide { to { background-position: 100% 0; } }
.hero-sub { margin: 26px auto 0; max-width: 620px; color: var(--ink-dim); font-size: 1.08rem; }
.hero-sub strong { color: var(--ink); font-weight: 600; }

.hero-actions { margin-top: 36px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 26px; border-radius: 999px; text-decoration: none;
  font-weight: 600; font-size: 0.98rem; transition: transform 0.18s ease, box-shadow 0.25s ease, border-color 0.2s;
  will-change: transform;
}
.btn-primary {
  color: #04121a;
  background: linear-gradient(120deg, var(--cyan), #7dd8ff);
  box-shadow: 0 0 0 1px rgba(94,230,255,0.4), 0 8px 30px -8px rgba(94,230,255,0.45);
}
.btn-primary:hover { box-shadow: 0 0 0 1px rgba(94,230,255,0.7), 0 12px 40px -8px rgba(94,230,255,0.65); }
.btn-ghost { color: var(--ink); border: 1px solid var(--line); background: rgba(255,255,255,0.03); }
.btn-ghost:hover { border-color: var(--cyan); }

.hero-stats { margin-top: 58px; display: flex; gap: clamp(24px, 6vw, 64px); justify-content: center; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num { font-size: 1.7rem; font-weight: 600; color: var(--ink); }
.stat-label { font-size: 0.8rem; color: var(--ink-faint); letter-spacing: 0.04em; }

.scroll-cue { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); color: var(--ink-faint); font-size: 0.75rem; animation: bob 2.4s ease-in-out infinite; }
@keyframes bob { 50% { transform: translate(-50%, 7px); } }

/* ---------- sections ---------- */

section { scroll-margin-top: 90px; }
.section-head { max-width: 1060px; margin: 0 auto; padding: 90px 20px 34px; }
.section-title { font-size: clamp(1.7rem, 3.6vw, 2.5rem); font-weight: 700; letter-spacing: -0.01em; }
.section-index { color: var(--cyan); font-size: 0.6em; vertical-align: 0.25em; margin-right: 6px; }
.section-sub { color: var(--ink-dim); margin-top: 10px; }

/* ---------- start here ---------- */

.start { border-block: 1px solid var(--line); background: rgba(10, 13, 22, 0.46); }
.start-head { padding-bottom: 30px; }
.start-kicker { color: var(--lime); font-size: 0.72rem; letter-spacing: 0.1em; margin-bottom: 9px; }
.start-paths {
  max-width: 1060px; margin: 0 auto; padding: 0 20px 82px;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.start-path {
  min-width: 0; min-height: 238px; padding: 26px 24px 28px;
  display: flex; flex-direction: column; color: var(--ink); text-decoration: none;
  border-bottom: 1px solid var(--line); transition: background 0.2s ease;
}
.start-path + .start-path { border-left: 1px solid var(--line); }
.start-path-num { color: var(--lime); font-size: 0.7rem; letter-spacing: 0.09em; }
.start-path strong { margin-top: 22px; font-size: 1.25rem; line-height: 1.25; }
.start-path-copy { margin-top: 8px; color: var(--ink-dim); font-size: 0.92rem; }
.start-path-cta { margin-top: auto; padding-top: 20px; color: var(--cyan); font-size: 0.72rem; }

/* ---------- working method ---------- */

.method { border-block: 1px solid var(--line); background: rgba(10, 13, 22, 0.46); }
.method-head { padding-bottom: 30px; }
.method-steps {
  max-width: 1060px; margin: 0 auto; padding: 0 20px;
  display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
  list-style: none;
}
.method-steps li {
  min-width: 0; padding: 24px 18px 28px;
  border-top: 1px solid var(--line);
}
.method-steps li + li { border-left: 1px solid var(--line); }
.method-num { display: block; color: var(--lime); font-size: 0.72rem; letter-spacing: 0.1em; margin-bottom: 12px; }
.method-steps h3 { font-size: 1rem; margin-bottom: 7px; }
.method-steps p { color: var(--ink-dim); font-size: 0.86rem; line-height: 1.55; }
.method-link { max-width: 1060px; margin: 0 auto; padding: 0 38px 34px; text-align: right; }
.method-link a { color: var(--cyan); font-family: var(--font-mono); font-size: 0.8rem; text-decoration: none; }
.method-link a:hover { text-decoration: underline; text-underline-offset: 4px; }

/* ---------- source-of-truth strip ---------- */

.truth { border-bottom: 1px solid var(--line); }
.truth-head { padding-bottom: 26px; }
.truth-kicker {
  margin-bottom: 10px; color: var(--lime); font-size: 0.7rem;
  letter-spacing: 0.12em;
}
.truth-track {
  max-width: 1060px; margin: 0 auto; padding: 0 20px;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none; counter-reset: none;
}
.truth-track li {
  position: relative; min-width: 0; padding: 22px 22px 25px 0;
  border-top: 1px solid var(--line);
}
.truth-track li:not(:last-child)::after {
  content: "→"; position: absolute; top: 25px; right: 13px;
  color: var(--ink-faint); font-family: var(--font-mono); font-size: 0.8rem;
}
.truth-num { display: block; margin-bottom: 13px; color: var(--cyan); font-size: 0.7rem; letter-spacing: 0.1em; }
.truth-track strong { display: block; margin-bottom: 6px; color: var(--ink); font-size: 0.98rem; }
.truth-track span:last-child { display: block; max-width: 21ch; color: var(--ink-dim); font-size: 0.84rem; line-height: 1.55; }
.truth-link { max-width: 1060px; margin: 0 auto; padding: 4px 20px 38px; }
.truth-link a { color: var(--cyan); font-family: var(--font-mono); font-size: 0.8rem; text-decoration: none; }
.truth-link a:hover { text-decoration: underline; text-underline-offset: 4px; }

/* ---------- filters ---------- */

.filters { max-width: 1060px; margin: 0 auto 34px; padding: 0 20px; display: flex; gap: 10px; flex-wrap: wrap; }
.chip {
  font-family: var(--font-mono); font-size: 0.8rem;
  min-height: 44px; padding: 7px 15px; border-radius: 999px; cursor: pointer;
  color: var(--ink-dim); background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  transition: color 0.18s, border-color 0.18s, background 0.18s;
}
.chip:hover { color: var(--ink); border-color: var(--ink-faint); }
.chip.active { color: #04121a; background: var(--cyan); border-color: var(--cyan); font-weight: 600; }

/* ---------- timeline ---------- */

.timeline { max-width: 1060px; margin: 0 auto; padding: 0 20px 10px; position: relative; view-transition-name: timeline; }
.timeline::before {
  content: ""; position: absolute; left: calc(20px + 7px); top: 6px; bottom: 6px; width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--violet) 55%, transparent);
  opacity: 0.35;
}
.entry {
  position: relative; margin: 0 0 26px 44px;
  background: var(--glass-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.entry::before {
  content: ""; position: absolute; left: -37px; top: 30px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--cyan);
  box-shadow: 0 0 12px rgba(94, 230, 255, 0.7);
}
.entry:focus { outline: 3px solid var(--lime); outline-offset: 5px; }
.entry-highlight { border-color: rgba(94,230,255,0.9); box-shadow: 0 0 0 1px rgba(94,230,255,0.35), 0 0 45px -18px var(--cyan); }
.entry-meta { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 10px; }
.entry-date { font-family: var(--font-mono); font-size: 0.78rem; color: var(--lime); letter-spacing: 0.05em; }
.entry-tags { display: flex; gap: 7px; flex-wrap: wrap; }
.tag { font-family: var(--font-mono); font-size: 0.68rem; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-dim); }
.entry-title { font-size: 1.28rem; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 8px; }
.entry-permalink { min-height: 44px; display: inline-flex; align-items: center; color: inherit; text-decoration: none; }
.entry-permalink:hover { color: var(--cyan); }
.entry-body { color: var(--ink-dim); font-size: 0.98rem; max-width: 72ch; }
.entry-body a { color: var(--cyan); text-decoration: none; border-bottom: 1px solid rgba(94,230,255,0.35); }
.entry-body a:hover { border-bottom-color: var(--cyan); }
.entry-metric { margin-top: 14px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--cyan); background: var(--glass-hi); border: 1px solid rgba(94,230,255,0.18); border-radius: 10px; padding: 8px 13px; display: inline-block; }
.entry-bridge {
  max-width: 72ch; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 126px minmax(0, 1fr); gap: 16px; align-items: center;
}
.entry-bridge-label { color: var(--lime); font-size: 0.66rem; letter-spacing: 0.08em; }
.entry-bridge a {
  min-height: 44px; display: inline-flex; align-items: center; justify-content: space-between; gap: 18px;
  color: var(--ink); text-decoration: none; font-size: 0.9rem; font-weight: 600;
}
.entry-bridge a span { color: var(--cyan); transition: transform 0.2s; }
.entry-bridge a:hover, .entry-bridge a:focus-visible { color: var(--cyan); }
.entry-bridge a:hover span, .entry-bridge a:focus-visible span { transform: translateX(3px); }
.timeline-end { text-align: center; color: var(--ink-faint); font-size: 0.78rem; padding: 26px 0 10px; }

/* glow-follow cards (pointer-tracked highlight) */
.glow-card { position: relative; overflow: hidden; }
.glow-card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(94,230,255,0.09), transparent 45%);
  opacity: 0; transition: opacity 0.3s;
}
.glow-card:hover::after { opacity: 1; }

/* ---------- about ---------- */

.about-grid { max-width: 1060px; margin: 0 auto; padding: 0 20px 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.about-card {
  background: var(--glass-solid); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px;
}
.about-card.wide { grid-column: 1 / -1; }
.about-avatar {
  width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center;
  font-size: 1.05rem; font-weight: 600; margin-bottom: 16px;
  color: #04121a; background: linear-gradient(135deg, var(--cyan), #7dd8ff);
}
.about-avatar.ai { color: #12041a; background: linear-gradient(135deg, var(--violet), #c07dff); }
.about-card h3 { font-size: 1.25rem; }
.about-role { color: var(--ink-faint); font-size: 0.78rem; letter-spacing: 0.08em; margin: 3px 0 12px; }
.about-card p { color: var(--ink-dim); font-size: 0.96rem; }
.about-card a { color: var(--cyan); text-underline-offset: 3px; }
.about-card em { color: var(--ink); font-style: italic; }

/* ---------- deep dives grid ---------- */

.dives-grid {
  max-width: 1060px; margin: 0 auto; padding: 0 20px 30px;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px;
}
.dive-card {
  display: flex; flex-direction: column; gap: 10px; text-decoration: none;
  background: var(--glass-solid); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.dive-card:focus-visible { outline: 3px solid var(--lime); outline-offset: 4px; }
.dive-num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--lime); letter-spacing: 0.1em; }
.dive-title { color: var(--ink); font-size: 1.12rem; font-weight: 700; letter-spacing: -0.01em; }
.dive-desc { color: var(--ink-dim); font-size: 0.9rem; flex-grow: 1; }
.dive-cta { font-family: var(--font-mono); font-size: 0.76rem; color: var(--cyan); }
.dives-more { max-width: 1060px; margin: 0 auto; padding: 4px 20px 74px; }
.dives-more a { color: var(--cyan); text-underline-offset: 4px; font-weight: 600; }

/* ---------- deep dives library ---------- */

.library-main { padding-top: 112px; }
.library-hero { max-width: 1060px; margin: 0 auto; padding: 70px 20px 46px; }
.library-kicker { color: var(--lime); font-size: 0.78rem; letter-spacing: 0.1em; }
.library-hero h1 {
  max-width: 12ch; margin-top: 18px;
  font-size: clamp(3rem, 8vw, 6.4rem); line-height: 0.98; letter-spacing: -0.045em;
}
.library-intro { max-width: 650px; margin-top: 28px; color: var(--ink-dim); font-size: 1.08rem; }
.library-map {
  max-width: 1060px; margin: 0 auto; padding: 0 20px 96px;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.pillar-jump {
  min-width: 0; min-height: 240px; padding: 28px 28px 30px;
  display: flex; flex-direction: column; text-decoration: none;
  border-bottom: 1px solid var(--line); color: var(--ink);
  transition: background 0.2s ease;
}
.pillar-jump:nth-child(odd) { border-right: 1px solid var(--line); }
.pillar-jump-num { color: var(--lime); font-size: 0.7rem; letter-spacing: 0.09em; }
.pillar-jump-title { margin-top: 23px; font-size: clamp(1.35rem, 3vw, 2rem); font-weight: 700; letter-spacing: -0.02em; }
.pillar-jump-desc { max-width: 40ch; margin-top: 9px; color: var(--ink-dim); }
.pillar-jump-cta { margin-top: auto; padding-top: 22px; color: var(--cyan); font-size: 0.72rem; }
.library-pillar { max-width: 1060px; margin: 0 auto; padding: 0 20px 110px; scroll-margin-top: 110px; }
.pillar-heading {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr); gap: 42px;
  align-items: end; padding-bottom: 28px; border-bottom: 1px solid var(--line);
}
.pillar-eyebrow { color: var(--lime); font-size: 0.7rem; letter-spacing: 0.09em; }
.pillar-heading h2 { margin-top: 10px; font-size: clamp(2rem, 5vw, 3.7rem); line-height: 1; letter-spacing: -0.035em; }
.pillar-heading > p { color: var(--ink-dim); }
.pillar-list { border-bottom: 1px solid var(--line); }
.library-entry {
  display: grid; grid-template-columns: 130px minmax(0, 1fr) 44px; gap: 20px; align-items: center;
  min-height: 132px; padding: 26px 0; color: var(--ink); text-decoration: none;
  border-top: 1px solid var(--line); transition: background 0.2s ease, padding 0.2s ease;
}
.pillar-list .library-entry:first-child { border-top: 0; }
.library-entry-num { align-self: start; padding-top: 5px; color: var(--lime); font-size: 0.7rem; letter-spacing: 0.09em; }
.library-entry-copy { display: flex; flex-direction: column; gap: 7px; }
.library-entry-copy strong { font-size: clamp(1.2rem, 2.4vw, 1.65rem); line-height: 1.18; letter-spacing: -0.02em; }
.library-entry-copy span { color: var(--ink-dim); }
.library-entry-arrow { color: var(--cyan); font-size: 1.45rem; text-align: right; }
.library-notebook {
  max-width: 1020px; margin: 0 auto 20px; padding: 42px;
  display: flex; justify-content: space-between; align-items: center; gap: 28px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--glass-solid);
}
.library-notebook h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
.library-notebook p { max-width: 55ch; margin-top: 7px; color: var(--ink-dim); }
.library-notebook a { flex: 0 0 auto; color: var(--cyan); text-underline-offset: 4px; font-weight: 600; }
.library-template-route { margin-top: 22px; color: var(--ink-faint); font-size: 0.9rem; }
.library-template-route a { margin-left: 6px; color: var(--cyan); font-weight: 600; text-underline-offset: 4px; }

/* ---------- reusable templates index ---------- */

.templates-main { padding-top: 112px; }
.templates-hero { max-width: 1060px; margin: 0 auto; padding: 70px 20px 54px; }
.templates-hero h1 {
  max-width: 11ch; margin-top: 18px;
  font-size: clamp(3rem, 8vw, 6.4rem); line-height: 0.98; letter-spacing: -0.045em;
}
.templates-intro { max-width: 680px; margin-top: 28px; color: var(--ink-dim); font-size: 1.08rem; }
.templates-summary { display: flex; flex-wrap: wrap; gap: 9px 22px; margin-top: 25px; color: var(--lime); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; }
.templates-summary span + span::before { content: "·"; margin-right: 22px; color: var(--ink-faint); }
.template-map {
  max-width: 1060px; margin: 0 auto; padding: 0 20px 112px;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line);
}
.template-map a {
  min-width: 0; min-height: 168px; padding: 24px 20px 26px;
  display: flex; flex-direction: column; color: var(--ink); text-decoration: none;
  border-bottom: 1px solid var(--line); transition: background 0.2s ease;
}
.template-map a + a { border-left: 1px solid var(--line); }
.template-map .mono { color: var(--lime); font-size: 0.68rem; }
.template-map strong { margin-top: 27px; font-size: 1.05rem; }
.template-map a > span:last-child { margin-top: 4px; color: var(--ink-faint); font-size: 0.8rem; }
.template-category { max-width: 1060px; margin: 0 auto; padding: 0 20px 118px; scroll-margin-top: 110px; }
.template-category-heading {
  display: grid; grid-template-columns: 140px minmax(220px, 0.75fr) minmax(280px, 1fr); gap: 28px;
  align-items: end; padding-bottom: 27px; border-bottom: 1px solid var(--line);
}
.template-category-kicker { color: var(--lime); font-size: 0.68rem; letter-spacing: 0.08em; }
.template-category-heading h2 { font-size: clamp(2rem, 4.5vw, 3.35rem); line-height: 1; letter-spacing: -0.035em; }
.template-category-heading > p { color: var(--ink-dim); }
.template-list { border-bottom: 1px solid var(--line); }
.template-entry {
  display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 28px;
  padding: 30px 0 32px; border-top: 1px solid var(--line); scroll-margin-top: 104px;
}
.template-list .template-entry:first-child { border-top: 0; }
.template-meta { padding-top: 4px; color: var(--lime); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; }
.template-copy h3 { font-size: clamp(1.25rem, 2.4vw, 1.7rem); line-height: 1.16; letter-spacing: -0.02em; }
.template-copy > p { max-width: 650px; margin-top: 8px; color: var(--ink-dim); }
.template-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 24px; margin-top: 18px; }
.template-actions a { min-height: 44px; display: inline-flex; align-items: center; color: var(--cyan); font-weight: 600; text-underline-offset: 4px; }
.template-source span { margin-left: 5px; }
.template-download { color: var(--lime) !important; font-size: 0.72rem; letter-spacing: 0.04em; }
.templates-authority {
  max-width: 1020px; margin: 0 auto 20px; padding: 38px 42px;
  display: grid; grid-template-columns: 140px minmax(0, 1fr) auto; gap: 28px; align-items: center;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--glass-solid);
}
.templates-authority > p { color: var(--lime); font-size: 0.68rem; letter-spacing: 0.08em; }
.templates-authority h2 { font-size: clamp(1.45rem, 3vw, 2.1rem); }
.templates-authority div p { max-width: 52ch; margin-top: 7px; color: var(--ink-dim); }
.templates-authority > a { color: var(--cyan); font-weight: 600; text-underline-offset: 4px; }

/* ---------- footer ---------- */

.footer { border-top: 1px solid var(--line); margin-top: 70px; padding: 40px 20px 50px; text-align: center; }
.footer p { color: var(--ink-dim); font-size: 0.85rem; }
.footer-dim { color: var(--ink-faint); margin-top: 8px; font-size: 0.75rem; }

/* ---------- error route ---------- */

.error-page {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 15% 10%, rgba(18,58,94,0.7), transparent 38%),
    radial-gradient(circle at 90% 15%, rgba(59,29,110,0.62), transparent 34%),
    var(--bg);
}
.error-main { width: min(760px, 100%); text-align: center; }
.error-code { color: var(--lime); font-size: 0.82rem; letter-spacing: 0.08em; }
.error-main h1 { margin-top: 18px; font-size: clamp(2.3rem, 8vw, 4.5rem); line-height: 1.05; letter-spacing: -0.03em; }
.error-main > p:not(.error-code) { max-width: 58ch; margin: 22px auto 0; color: var(--ink-dim); }

/* ---------- command palette ---------- */

.palette-backdrop[hidden] { display: none; }
.palette-backdrop {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(3, 4, 8, 0.7); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  display: grid; place-items: start center; padding-top: 14vh;
}
.palette {
  width: min(620px, calc(100% - 32px));
  background: var(--bg-2); border: 1px solid rgba(94,230,255,0.25); border-radius: 16px;
  box-shadow: 0 30px 90px -20px rgba(0,0,0,0.8), 0 0 60px -30px var(--cyan);
  overflow: hidden;
}
.palette-head {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 14px 12px 20px;
  border-bottom: 1px solid var(--line);
}
.palette-head h2 { font-size: 1rem; line-height: 1.25; }
.palette-head p { margin-top: 3px; color: var(--ink-dim); font-size: 0.76rem; }
.palette-close {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255,255,255,0.04);
  font: 400 1.5rem/1 var(--font-sans);
  cursor: pointer;
}
.palette-close:hover { border-color: var(--cyan); }
.palette input {
  width: 100%; background: transparent; border: 0; outline: 0;
  color: var(--ink); font-size: 1rem; padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}
.palette-results { max-height: 52vh; overflow-y: auto; }
.palette-item {
  min-height: 72px;
  padding: 13px 20px;
  cursor: pointer;
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) 18px;
  gap: 14px;
  align-items: start;
}
.palette-item:hover, .palette-item.sel { background: rgba(94,230,255,0.07); }
.palette-item .pi-type {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  line-height: 1.25;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--cyan);
}
.palette-item .pi-copy { min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.palette-item .pi-title { font-size: 0.92rem; line-height: 1.35; color: var(--ink); }
.palette-item .pi-desc {
  overflow: hidden;
  color: var(--ink-dim);
  font-size: 0.76rem;
  line-height: 1.45;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.palette-item .pi-arrow { color: var(--cyan); font-family: var(--font-mono); }
.palette-empty { padding: 20px; color: var(--ink-faint); font-family: var(--font-mono); font-size: 0.82rem; }

/* ---------- responsive ---------- */

@media (max-width: 760px) {
  .nav { top: 8px; width: calc(100% - 16px); padding: 5px 8px; }
  .nav-brand { padding-inline: 8px; }
  .brand-hex { font-size: 1.1rem; }
  .nav-links { display: none; }
  .nav-menu { display: block; }
  .about-grid { grid-template-columns: 1fr; }
  .entry { margin-left: 30px; padding: 20px; }
  .entry-bridge { grid-template-columns: 1fr; gap: 2px; }
  .timeline::before { left: calc(20px + 1px); }
  .entry::before { left: -30px; }
  .hero-stats { gap: 26px; }
  .palette-backdrop { padding-top: max(8vh, 58px); }
  .palette-head p { max-width: 31ch; }
  .palette-item { grid-template-columns: 64px minmax(0, 1fr) 16px; gap: 10px; padding-inline: 16px; }
  .aurora-blob, .gradient-text, .scroll-cue { animation: none; }
  .start-paths { grid-template-columns: 1fr; }
  .start-path { min-height: 190px; padding-inline: 0; }
  .start-path + .start-path { border-left: 0; }
  .method-steps { display: block; }
  .method-steps li { display: grid; grid-template-columns: 42px 1fr; gap: 10px; padding: 18px 0; }
  .method-steps li + li { border-left: 0; }
  .method-num { margin: 2px 0 0; }
  .method-link { padding-inline: 20px; text-align: left; }
  .truth-track { grid-template-columns: 1fr; }
  .truth-track li { padding: 17px 0 18px 42px; }
  .truth-track li:not(:last-child)::after { content: "↓"; top: auto; right: auto; left: 5px; bottom: -10px; }
  .truth-num { position: absolute; left: 0; top: 19px; }
  .truth-track span:last-child { max-width: none; }
  .library-main { padding-top: 84px; }
  .library-hero { padding-top: 52px; }
  .library-map { grid-template-columns: 1fr; }
  .pillar-jump { min-height: 205px; padding-inline: 0; }
  .pillar-jump:nth-child(odd) { border-right: 0; }
  .pillar-heading { grid-template-columns: 1fr; gap: 18px; }
  .library-entry { grid-template-columns: 1fr 32px; gap: 12px; }
  .library-entry-num { grid-column: 1 / -1; }
  .library-notebook { margin-inline: 20px; padding: 28px; align-items: flex-start; flex-direction: column; }
  .library-template-route span { display: block; margin-bottom: 4px; }
  .library-template-route a { margin-left: 0; }
  .templates-main { padding-top: 84px; }
  .templates-hero { padding-top: 52px; }
  .templates-summary { display: grid; gap: 7px; }
  .templates-summary span + span::before { content: none; }
  .template-map { grid-template-columns: 1fr 1fr; }
  .template-map a { min-height: 150px; padding-inline: 0; }
  .template-map a:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--line); }
  .template-map a:nth-child(3) { border-left: 0; }
  .template-category-heading { grid-template-columns: 1fr; gap: 12px; }
  .template-entry { grid-template-columns: 1fr; gap: 9px; padding-block: 26px; }
  .template-meta { padding-top: 0; }
  .templates-authority { margin-inline: 20px; padding: 28px; grid-template-columns: 1fr; gap: 14px; }
}

@media (hover: hover) and (pointer: fine) {
  .entry:hover { border-color: rgba(94, 230, 255, 0.35); transform: translateY(-2px); }
  .dive-card:hover { border-color: rgba(94,230,255,0.4); transform: translateY(-3px); }
  .pillar-jump:hover, .library-entry:hover { background: rgba(94,230,255,0.045); }
  .library-entry:hover { padding-inline: 12px; }
  .start-path:hover, .nav-menu-panel a:hover, .nav-menu-search:hover { background: rgba(94,230,255,0.045); }
  .template-map a:hover { background: rgba(94,230,255,0.045); }
  .template-source:hover, .template-source:focus-visible { color: var(--ink); }
}

@media (max-width: 350px) {
  .brand-word { display: none; }
  .nav-brand { width: 44px; justify-content: center; padding-inline: 0; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scroll-progress, .aurora-blob, .gradient-text, .scroll-cue { animation: none !important; }
  .btn, .entry { transition: none; }
  #field { display: none; }
}