/* ============================================================
   Base & Reset
   ============================================================ */

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

:root {
  /* Dark theme palette */
  --color-bg:        #0c0c0a;
  --color-bg-alt:    #131311;
  --color-bg-raise:  #1a1a17;   /* for cards/tooltips lifted above bg */
  --color-text:      #eceae5;
  --color-muted:     #a4a49e;   /* ~8:1 on bg */
  --color-subtle:    #888882;   /* ~5.4:1 on bg */
  --color-accent:    #79b88a;   /* mint-sage green, ~8:1 on bg */
  --color-border:    #252520;
  --color-border-hi: #353530;   /* hover/active border */

  --font-serif:  'Lora', Georgia, 'Times New Roman', serif;
  --font-sans:   'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:   'SF Mono', 'Fira Code', 'Cascadia Code', monospace;

  --width-max:   720px;
  --space-xs:    0.5rem;
  --space-sm:    1rem;
  --space-md:    2rem;
  --space-lg:    4rem;
  --space-xl:    6rem;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Text selection color ──────────────────────────────────────────────── */
::selection {
  background: rgba(121, 184, 138, 0.22);
  color: var(--color-text);
}

/* ── Grain texture overlay ─────────────────────────────────────────────── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.065;
  background-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='250' height='250'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='250' height='250' filter='url(%23n)'/></svg>");
  background-size: 200px 200px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  opacity: 0;
  transition: opacity 0.45s ease;
}

body.loaded {
  opacity: 1;
}

/* ── Skip link ─────────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-text);
  color: var(--color-bg);
  font-size: 0.85rem;
  border-radius: 0 0 4px 4px;
  text-decoration: none;
  z-index: 10000;
  transition: top 0.15s;
}
.skip-link:focus { top: 0; }

/* ── Scroll progress bar ───────────────────────────────────────────────── */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-accent);
  z-index: 9999;
  transition: width 0.1s linear;
  border-radius: 0 1px 1px 0;
}

/* ============================================================
   Layout
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--width-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  padding: var(--space-xl) 0 var(--space-lg);
  text-align: center;
  position: relative;
}

/* ── Time greeting ─────────────────────────────────────────────────────── */
.greeting {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--color-subtle);
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
  opacity: 0;
  transition: opacity 1s ease 0.3s;
}
.greeting.visible { opacity: 1; }

.name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.tagline {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-subtle);
  margin-bottom: var(--space-lg);
}

/* ── Hero ambient glow ─────────────────────────────────────────────────── */
.hero::before {
  content: '';
  position: absolute;
  top: 38%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 560px;
  height: 320px;
  background: radial-gradient(ellipse at center, rgba(121, 184, 138, 0.11) 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

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

/* ── Headline + typewriter ─────────────────────────────────────────────── */
.headline {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  min-height: 1.2em; /* prevent layout shift while typing */
}

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 0.85em;
  background: var(--color-accent);
  margin-left: 3px;
  vertical-align: middle;
  animation: blink 0.9s step-end infinite;
  border-radius: 1px;
}
.typewriter-cursor.done {
  animation: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}

@keyframes blink {
  50% { opacity: 0; }
}

.subheadline {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

.hero-body {
  text-align: left;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  margin-top: var(--space-md);
}

.hero-body p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 1.1rem;
}
.hero-body p:last-child { margin-bottom: 0; }

.signature-line {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--color-accent);
  margin-top: var(--space-sm);
}

/* ── Book tooltip ──────────────────────────────────────────────────────── */
.book-ref {
  position: relative;
  display: inline;
}

.book-ref > em {
  text-decoration: underline;
  text-decoration-style: dashed;
  text-decoration-color: var(--color-subtle);
  text-underline-offset: 3px;
  cursor: help;
  transition: text-decoration-color 0.2s;
}
.book-ref:hover > em {
  text-decoration-color: var(--color-accent);
}

.book-card {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  background: var(--color-bg-raise);
  border: 1px solid var(--color-border-hi);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  width: 240px;
  text-align: left;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.book-ref:hover .book-card,
.book-ref:focus-within .book-card {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.book-card strong {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  font-style: normal;
}

.book-meta {
  font-size: 0.75rem;
  color: var(--color-subtle);
  font-style: normal;
  letter-spacing: 0.02em;
}

.book-desc {
  font-size: 0.82rem;
  color: var(--color-muted);
  font-style: normal;
  line-height: 1.5;
}

/* ============================================================
   Sections
   ============================================================ */

.section {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
}

.section-alt {
  background-color: #161613;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.section-intro {
  font-size: 1rem;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
  font-weight: 300;
}

/* ============================================================
   Prose
   ============================================================ */

.prose p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}
.prose p:last-child { margin-bottom: 0; }

.prose em {
  font-family: var(--font-serif);
  font-style: italic;
}

.emphasis {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--color-accent);
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-sm);
  margin-top: var(--space-md);
  box-shadow: -6px 0 28px rgba(121, 184, 138, 0.12);
}

.full-name-line {
  margin-top: var(--space-md);
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* ============================================================
   Example Block
   ============================================================ */

.example-block {
  background-color: var(--color-bg-raise);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-md);
  margin: var(--space-md) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.example-block:hover {
  border-color: var(--color-border-hi);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.section-alt .example-block {
  background-color: var(--color-bg);
}

.example-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.example-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-subtle);
}

.example-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-text);
}

/* ============================================================
   Interest Grid
   ============================================================ */

.interest-grid {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: var(--space-md);
}

.interest-grid li {
  display: inline-block;
  padding: 0.38rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.82rem;
  letter-spacing: 0.01em;
  color: var(--color-muted);
  cursor: default;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.interest-grid li:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
  background: rgba(121, 184, 138, 0.06);
}

/* ============================================================
   Interest Marquee (kept for potential reuse)
   ============================================================ */

.interest-marquee {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-top: var(--space-md);
  padding: 0.5rem 0;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 9%, black 91%, transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, black 9%, black 91%, transparent 100%);
}

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

.marquee-row {
  display: flex;
  width: max-content;
}

.marquee-fwd {
  animation: marquee-fwd 36s linear infinite;
}

.marquee-rev {
  animation: marquee-rev 30s linear infinite;
}

@keyframes marquee-fwd {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@keyframes marquee-rev {
  from { transform: translateX(-50%); }
  to   { transform: translateX(0); }
}

.marquee-inner {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding-right: 0.65rem;
  white-space: nowrap;
}

.itag {
  display: inline-block;
  padding: 0.38rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.82rem;
  letter-spacing: 0.01em;
  color: var(--color-muted);
  cursor: default;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.itag:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
  background: rgba(121, 184, 138, 0.06);
  box-shadow: 0 0 12px rgba(121, 184, 138, 0.12);
}

.marquee-dot {
  color: var(--color-border-hi);
  font-size: 0.65rem;
  user-select: none;
  opacity: 0.6;
}

/* ============================================================
   Curious Links
   ============================================================ */

.curious-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xs);
}

.curious-link {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.curious-link:hover,
.curious-link:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
  outline: none;
}

.curious-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.curious-link.coming-soon {
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
}

/* ============================================================
   Footer
   ============================================================ */

.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  text-align: center;
}

.footer-idea {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

.footer-name {
  font-size: 0.8rem;
  color: var(--color-subtle);
  letter-spacing: 0.02em;
}

/* ============================================================
   Scroll reveal animations
   ============================================================ */

.section,
.hero-body {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.section.visible,
.hero-body.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Command Palette (⌘K / Ctrl+K)
   ============================================================ */

/* Floating trigger button */
.cmd-trigger {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 500;
  background: var(--color-bg-raise);
  border: 1px solid var(--color-border-hi);
  border-radius: 6px;
  color: var(--color-subtle);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s, opacity 0.3s;
  opacity: 0.6;
}
.cmd-trigger:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-bg-alt);
  opacity: 1;
}
.cmd-trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Overlay */
.cmd-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20vh;
}

.cmd-overlay[hidden] { display: none; }

.cmd-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.cmd-box {
  position: relative;
  width: 100%;
  max-width: 520px;
  margin: 0 1rem;
  background: var(--color-bg-raise);
  border: 1px solid var(--color-border-hi);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
  animation: cmd-enter 0.18s ease;
}

@keyframes cmd-enter {
  from { opacity: 0; transform: scale(0.97) translateY(-6px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.cmd-search {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--color-border);
}

.cmd-search-icon {
  color: var(--color-subtle);
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.cmd-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 300;
  caret-color: var(--color-accent);
}

.cmd-input::placeholder { color: var(--color-subtle); }

.cmd-list {
  list-style: none;
  max-height: 260px;
  overflow-y: auto;
  padding: 0.4rem 0;
}

.cmd-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1.1rem;
  cursor: pointer;
  transition: background 0.12s;
}

.cmd-item[hidden] { display: none; }

.cmd-item.active,
.cmd-item:hover {
  background: rgba(121, 184, 138, 0.08);
}

.cmd-item-icon {
  font-size: 0.7rem;
  color: var(--color-subtle);
  flex-shrink: 0;
  width: 1rem;
  text-align: center;
}

.cmd-item-label {
  font-size: 0.88rem;
  color: var(--color-muted);
  transition: color 0.12s;
}

.cmd-item.active .cmd-item-label,
.cmd-item:hover .cmd-item-label {
  color: var(--color-text);
}

.cmd-footer-hint {
  display: flex;
  gap: 1.25rem;
  padding: 0.55rem 1.1rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.7rem;
  color: var(--color-subtle);
}

.cmd-footer-hint kbd {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-hi);
  border-radius: 3px;
  padding: 0.1rem 0.35rem;
  color: var(--color-subtle);
}

/* ============================================================
   G-1: System mark
   ============================================================ */

.system-mark {
  display: flex;
  justify-content: center;
  margin-bottom: 1.6rem;
  opacity: 0.6;
}

/* ============================================================
   I-1: Reading time
   ============================================================ */

.reading-time {
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--color-subtle);
  margin-top: 0.5rem;
  margin-bottom: 0;
}

/* ============================================================
   G-2: Section separator mark
   ============================================================ */

.section {
  position: relative;
}

.section::before {
  content: '◈';
  position: absolute;
  top: -0.58em;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.55rem;
  color: var(--color-border-hi);
  background: var(--color-bg);
  padding: 0 0.9rem;
  pointer-events: none;
}

.section-alt::before {
  background: #161613;
}

/* ============================================================
   A-3: Accent line draw on section title reveal
   ============================================================ */

.section-title::after {
  content: '';
  display: block;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  margin-top: 0.55rem;
  opacity: 0.55;
  transition: width 0.55s ease 0.2s;
}

.section.visible .section-title::after {
  width: 2rem;
}

/* ============================================================
   A-1: Staggered child reveals within sections
   ============================================================ */

.section .section-title,
.section .section-intro,
.section .prose p,
.section .interest-grid,
.section .example-block,
.section .curious-links,
.section .share-row,
.section .full-name-line {
  transform: translateY(7px);
  transition: transform 0.5s ease;
}

.section.visible .section-title        { transform: translateY(0); transition-delay: 0.08s; }
.section.visible .section-intro        { transform: translateY(0); transition-delay: 0.15s; }
.section.visible .prose p:nth-child(1) { transform: translateY(0); transition-delay: 0.18s; }
.section.visible .prose p:nth-child(2) { transform: translateY(0); transition-delay: 0.26s; }
.section.visible .prose p:nth-child(3) { transform: translateY(0); transition-delay: 0.34s; }
.section.visible .prose p:nth-child(4) { transform: translateY(0); transition-delay: 0.42s; }
.section.visible .prose p:nth-child(5) { transform: translateY(0); transition-delay: 0.50s; }
.section.visible .interest-grid        { transform: translateY(0); transition-delay: 0.18s; }
.section.visible .example-block        { transform: translateY(0); transition-delay: 0.22s; }
.section.visible .curious-links        { transform: translateY(0); transition-delay: 0.18s; }
.section.visible .share-row            { transform: translateY(0); transition-delay: 0.30s; }
.section.visible .full-name-line       { transform: translateY(0); transition-delay: 0.55s; }

/* ============================================================
   A-2: Breathing hero glow
   ============================================================ */

@keyframes breathe {
  0%, 100% { opacity: 1;   transform: translate(-50%, -50%) scale(1); }
  50%       { opacity: 0.6; transform: translate(-50%, -50%) scale(1.14); }
}

.hero::before {
  animation: breathe 10s ease-in-out infinite;
}

/* ============================================================
   G-3: Headline shimmer
   ============================================================ */

@keyframes shimmer {
  0%, 100% { background-position: 0%   center; }
  50%       { background-position: 100% center; }
}

.headline {
  background: linear-gradient(90deg,
    var(--color-text) 0%,
    var(--color-accent) 50%,
    var(--color-text) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 10s ease-in-out infinite;
}

/* ============================================================
   N-1: Section nav dots (right side)
   ============================================================ */

.section-nav {
  position: fixed;
  right: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  z-index: 400;
}

.snav-dot {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-border-hi);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.25s, transform 0.25s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.snav-dot:hover,
.snav-dot.active {
  background: var(--color-accent);
}

.snav-dot.active {
  transform: scale(1.6);
}

.snav-dot:hover .snav-label {
  opacity: 1;
  transform: translateX(0);
}

.snav-label {
  position: absolute;
  right: calc(100% + 10px);
  white-space: nowrap;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  background: var(--color-bg-raise);
  border: 1px solid var(--color-border-hi);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transform: translateX(4px);
  transition: opacity 0.15s, transform 0.15s;
}

/* ============================================================
   N-2: Back to top
   ============================================================ */

.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  z-index: 500;
  background: var(--color-bg-raise);
  border: 1px solid var(--color-border-hi);
  border-radius: 6px;
  color: var(--color-subtle);
  font-size: 0.82rem;
  padding: 0.32rem 0.62rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, color 0.2s, border-color 0.2s, background 0.2s;
}

.back-to-top.visible {
  opacity: 0.55;
  pointer-events: auto;
}

.back-to-top:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  opacity: 1;
}

/* ============================================================
   N-3: Current section label (top-left)
   ============================================================ */

.section-label {
  position: fixed;
  top: 1.1rem;
  left: 1.5rem;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-subtle);
  opacity: 0;
  transition: opacity 0.4s;
  z-index: 400;
  pointer-events: none;
}

.section-label.visible {
  opacity: 1;
}

/* ============================================================
   I-4: Share button
   ============================================================ */

.share-row {
  margin-top: var(--space-md);
}

.share-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-subtle);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  padding: 0.38rem 0.9rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  letter-spacing: 0.02em;
}

.share-btn:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: rgba(121, 184, 138, 0.05);
}

/* ============================================================
   I-2: Custom cursor dot
   ============================================================ */

.cursor-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9997;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s, width 0.18s ease, height 0.18s ease;
  mix-blend-mode: screen;
}

.cursor-dot.visible { opacity: 0.55; }
.cursor-dot.hover   { width: 14px; height: 14px; opacity: 0.35; }

/* ============================================================
   I-5: Ambient cursor spotlight
   ============================================================ */

.cursor-spotlight {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(121, 184, 138, 0.035) 0%, transparent 70%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 0;
}

/* ============================================================
   I-3: Term-ref tooltip (mirrors book-ref pattern)
   ============================================================ */

.term-ref {
  position: relative;
  display: inline;
}

.term-ref > span:first-child,
.term-ref {
  text-decoration: underline;
  text-decoration-style: dashed;
  text-decoration-color: var(--color-subtle);
  text-underline-offset: 3px;
  cursor: help;
  transition: text-decoration-color 0.2s;
}

.term-ref:hover {
  text-decoration-color: var(--color-accent);
}

.term-card {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  background: var(--color-bg-raise);
  border: 1px solid var(--color-border-hi);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  width: 220px;
  text-align: left;
  z-index: 200;
  font-size: 0.82rem;
  font-style: normal;
  color: var(--color-muted);
  line-height: 1.55;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  display: block;
}

.term-ref:hover .term-card,
.term-ref:focus-within .term-card {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 600px) {
  :root {
    --space-lg: 3rem;
    --space-xl: 4rem;
  }

  html { font-size: 16px; }

  .name { font-size: 1.7rem; }

  .curious-links {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .example-block { padding: var(--space-sm); }

  /* On small screens, tooltip snaps left instead of centering */
  .book-card {
    left: 0;
    right: auto;
    transform: translateY(6px);
  }
  .book-ref:hover .book-card,
  .book-ref:focus-within .book-card {
    transform: translateY(0);
  }

  .term-card {
    left: 0;
    right: auto;
    transform: translateY(6px);
  }
  .term-ref:hover .term-card,
  .term-ref:focus-within .term-card {
    transform: translateY(0);
  }

  .cmd-overlay { padding-top: 10vh; }

  /* Hide fixed chrome on small screens */
  .section-nav,
  .section-label,
  .back-to-top { display: none; }

  /* Cursor effects don't apply on touch */
  .cursor-dot,
  .cursor-spotlight { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-fwd, .marquee-rev {
    animation: none;
  }
}

/* ============================================================
   Reduced motion
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  body { transition: none; opacity: 1; }

  .section, .hero-body {
    transition: none;
    opacity: 1;
    transform: none;
  }

  .section .section-title,
  .section .section-intro,
  .section .prose p,
  .section .interest-grid,
  .section .example-block,
  .section .curious-links,
  .section .share-row,
  .section .full-name-line {
    transform: none;
    transition: none;
  }

  .greeting { transition: none; opacity: 1; }
  .typewriter-cursor { animation: none; }
  .cmd-box { animation: none; }
  .hero::before { animation: none; }
  .headline { animation: none; background: none; -webkit-text-fill-color: var(--color-text); }
  .section-title::after { transition: none; width: 2rem; }
  .cursor-dot, .cursor-spotlight { display: none; }
}