/* ─────────────────────────────────────────────────────────────────────────
   jamesfloyds.world — site.css
   One file. No build step. Plain CSS custom properties.
   ───────────────────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700;900&family=EB+Garamond:ital,wght@0,400;0,500;1,400&family=DM+Mono:wght@300;400&family=Lora:ital,wght@0,400;0,500;1,400&family=Space+Mono:wght@400;700&display=swap');

/* ── Design tokens ─────────────────────────────────────────────────────── */
:root {
  --bg:    #000;
  --fg:    #fff;

  /* Text opacity levels */
  --fg-90: hsl(0 0% 100% / 0.90);
  --fg-85: hsl(0 0% 100% / 0.85);
  --fg-70: hsl(0 0% 100% / 0.70);
  --fg-60: hsl(0 0% 100% / 0.60);
  --fg-55: hsl(0 0% 100% / 0.55);
  --fg-50: hsl(0 0% 100% / 0.50);
  --fg-40: hsl(0 0% 100% / 0.40);
  --fg-30: hsl(0 0% 100% / 0.30);
  --fg-20: hsl(0 0% 100% / 0.20);
  --fg-12: hsl(0 0% 100% / 0.12);

  /* Surface colors */
  --card-bg:      hsl(0 0% 2%);
  --secondary-bg: hsl(0 0% 8%);
  --muted-bg:     hsl(0 0% 12%);
  --border:       hsl(0 0% 15%);

  /* Typography */
  --font-serif:   'Lora', 'EB Garamond', Georgia, serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-garamond:'EB Garamond', Georgia, serif;
  --font-mono:    'DM Mono', 'Space Mono', monospace;

  /* Layout */
  --nav-h: 48px;
  --page-px: 24px;  /* horizontal page padding */
}

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

html {
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }
a { color: inherit; }
ul, ol { list-style: none; }

/* ── Nav / Walkway header ──────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--bg);
  z-index: 40;
  display: flex;
  align-items: center;
}

.site-header__logo {
  position: absolute;
  top: 8px; left: var(--page-px);
  width: 32px; height: 32px;
  opacity: 0.6;
  transition: opacity 0.2s;
}
.site-header__logo:hover { opacity: 1; }
.site-header__logo img { width: 100%; height: 100%; }

.site-header__menu-btn {
  position: absolute;
  top: 16px; right: var(--page-px);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-40);
  transition: color 0.2s;
}
.site-header__menu-btn:hover { color: var(--fg-80); }

/* ── Full-screen nav overlay ───────────────────────────────────────────── */
.site-nav {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: hsl(0 0% 0% / 0.97);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.site-nav.is-open {
  opacity: 1;
  visibility: visible;
}

.site-nav__list {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.site-nav__item { position: relative; }

.site-nav__link {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg);
  text-decoration: none;
  transition: color 0.2s;
  display: inline-block;
}
.site-nav__link:hover { color: var(--fg-60); }

/* Sub-items: hidden by default, revealed on hover (desktop) or tap (mobile via JS) */
.site-nav__sub {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding-top: 0;
}
.site-nav__item:hover .site-nav__sub,
.site-nav__item.is-expanded .site-nav__sub {
  max-height: 200px;
  padding-top: 12px;
}

.site-nav__sub-link {
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-60);
  text-decoration: none;
  transition: color 0.2s;
}
.site-nav__sub-link:hover { color: var(--fg); }

.site-nav__back {
  font-size: 1.25rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-60);
  text-decoration: none;
  transition: color 0.2s;
  margin-top: 24px;
  display: inline-block;
}
.site-nav__back:hover { color: var(--fg); }

.site-nav__close {
  margin-top: 48px;
  font-size: 0.875rem;
  color: var(--fg-60);
  transition: color 0.2s;
  display: block;
  text-align: center;
}
.site-nav__close:hover { color: var(--fg); }

/* ── Page base (pages with nav) ────────────────────────────────────────── */
.page {
  padding-top: var(--nav-h);
  min-height: 100vh;
}

/* ── Inline text link (used in letter + prose) ─────────────────────────── */
.prose-link {
  color: var(--fg-85);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: hsl(0 0% 100% / 0.3);
  transition: color 0.3s, text-decoration-color 0.3s;
}
.prose-link:hover {
  color: var(--fg);
  text-decoration-color: hsl(0 0% 100% / 0.6);
}

/* ── CSS-only hover card (shows a photo on hover) ──────────────────────── */
.hovercard { position: relative; display: inline; }
.hovercard__pop {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: 144px;
  padding: 4px;
  background: hsl(0 0% 0% / 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  z-index: 100;
}
.hovercard__pop img { width: 100%; border-radius: 6px; }
.hovercard:hover .hovercard__pop { opacity: 1; visibility: visible; }

/* ── Animations ────────────────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.anim-fade-up  { animation: fadeUp  0.6s cubic-bezier(0.16,1,0.3,1) both; }
.anim-fade-in  { animation: fadeIn  0.4s ease both; }
.anim-slide-dn { animation: slideDown 0.6s cubic-bezier(0.16,1,0.3,1) both; }

/* Stagger delays for lists */
.anim-d1 { animation-delay: 0.05s; }
.anim-d2 { animation-delay: 0.10s; }
.anim-d3 { animation-delay: 0.15s; }
.anim-d4 { animation-delay: 0.20s; }
.anim-d5 { animation-delay: 0.25s; }
.anim-d6 { animation-delay: 0.30s; }
.anim-d7 { animation-delay: 0.35s; }
.anim-d8 { animation-delay: 0.40s; }

/* Music note float (Blueprints page) */
@keyframes musicNoteFloat1 {
  0%   { opacity: 0; transform: translate(0, 0) rotate(0deg); }
  20%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-8px, -25px) rotate(-15deg); }
}
@keyframes musicNoteFloat2 {
  0%   { opacity: 0; transform: translate(0, 0) rotate(0deg); }
  30%  { opacity: 1; }
  100% { opacity: 0; transform: translate(5px, -30px) rotate(10deg); }
}
@keyframes musicNoteFloat3 {
  0%   { opacity: 0; transform: translate(0, 0) rotate(0deg); }
  25%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-3px, -22px) rotate(-8deg); }
}
.anim-note-1 { animation: musicNoteFloat1 1.5s ease-out infinite; }
.anim-note-2 { animation: musicNoteFloat2 1.8s ease-out 0.3s infinite; }
.anim-note-3 { animation: musicNoteFloat3 1.6s ease-out 0.6s infinite; }

/* ── .post-body — Substack HTML rendered in the /writing modal ─────────── */
.post-body {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: hsl(0 0% 100% / 0.92);
}
.post-body > * + * { margin-top: 1.25em; }
.post-body p { margin: 0 0 1em; }
.post-body p:last-child { margin-bottom: 0; }
.post-body h1, .post-body h2, .post-body h3, .post-body h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  margin: 2em 0 0.6em;
  color: var(--fg);
}
.post-body h1 { font-size: 1.85rem; }
.post-body h2 { font-size: 1.55rem; }
.post-body h3 { font-size: 1.25rem; }
.post-body h4 { font-size: 1.1rem; }
.post-body a {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-color: hsl(0 0% 100% / 0.4);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
}
.post-body a:hover { text-decoration-color: var(--fg); }
.post-body strong { color: var(--fg); }
.post-body em { font-style: italic; }
.post-body blockquote {
  border-left: 3px solid hsl(0 0% 100% / 0.4);
  margin: 1.5em 0;
  padding: 0.25em 0 0.25em 1.25em;
  font-style: italic;
  color: hsl(0 0% 100% / 0.85);
}
.post-body ul, .post-body ol { margin: 1em 0; padding-left: 1.5em; list-style: revert; }
.post-body li { margin: 0.4em 0; }
.post-body hr { border: 0; border-top: 1px solid var(--border); margin: 2.5em 0; }
.post-body img { max-width: 100%; height: auto; display: block; margin: 1.5em auto; border-radius: 2px; }
.post-body figure { margin: 1.5em 0; }
.post-body figcaption { font-size: 0.85rem; text-align: center; color: var(--fg-60); margin-top: 0.5em; }
.post-body pre, .post-body code { font-family: var(--font-mono); font-size: 0.9em; }
.post-body pre { background: var(--secondary-bg); padding: 1em; border-radius: 4px; overflow-x: auto; }
.post-body code:not(pre code) { background: var(--secondary-bg); padding: 0.15em 0.4em; border-radius: 3px; }
.post-body a.image-link { text-decoration: none; }

/* ── Page-level layout utilities ───────────────────────────────────────── */
.page-content {
  max-width: 56rem;
  margin: 0 auto;
}

.page-title {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.page-subtitle {
  color: var(--fg-60);
  font-size: 0.875rem;
  margin-bottom: 3rem;
  line-height: 1.6;
}

.section-heading {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* Card */
.card {
  border: 1px solid var(--border);
  padding: 1.5rem;
  transition: border-color 0.2s;
  /* Stack content vertically so the action row can be pinned to the bottom
     when grid alignment stretches a card to match a taller sibling. */
  display: flex;
  flex-direction: column;
}
.card:hover { border-color: hsl(0 0% 40%); }
.card > .btn-row { margin-top: auto; }
.card-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--fg-60); }
.card-title { font-size: 1.05rem; margin: 0.5rem 0 0.5rem; }
.card-body  { color: var(--fg-60); font-size: 0.875rem; line-height: 1.6; }

/* Responsive grids */
.grid-2, .grid-3, .grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: opacity 0.2s, border-color 0.2s;
}
.btn-primary  { background: var(--fg); color: var(--bg); border: none; }
.btn-primary:hover { opacity: 0.9; }
.btn-outline  { border: 1px solid var(--border); color: var(--fg); }
.btn-outline:hover { border-color: hsl(0 0% 40%); }
.btn-row { display: flex; flex-wrap: wrap; gap: 1rem; }

/* Inline text link (not prose-link — used in structured content) */
.text-link {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--fg-30);
  transition: text-decoration-color 0.2s;
}
.text-link:hover { text-decoration-color: var(--fg); }

/* Tag / badge */
.tag {
  display: inline-block;
  padding: 0.2em 0.6em;
  font-size: 0.75rem;
  background: var(--secondary-bg);
  color: var(--fg);
}

/* Horizontal rule */
.divider { border: 0; border-top: 1px solid var(--border); margin: 2rem 0; }

/* Section with left border (used in projects "other" section) */
.border-section { border-left: 2px solid var(--border); padding-left: 1.5rem; }

/* Masonry photo grid */
.photo-grid {
  columns: 1;
  column-gap: 1rem;
}
@media (min-width: 480px) { .photo-grid { columns: 2; } }
@media (min-width: 768px) { .photo-grid { columns: 3; } }
@media (min-width: 1024px) { .photo-grid { columns: 4; } }

.photo-item {
  break-inside: avoid;
  margin-bottom: 1rem;
}
.photo-frame {
  border: 2px solid var(--fg);
  padding: 0.5rem;
  background: var(--bg);
}
.photo-frame img { width: 100%; height: auto; display: block; filter: grayscale(1); }

/* ── Modal (native <dialog>) ───────────────────────────────────────────── */
dialog {
  background: var(--card-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0;
  max-width: min(680px, 94vw);
  width: 100%;
  /* Explicit height (not max-height) so flex:1 children — body content —
     have a real height to grow into. With max-height alone the dialog
     sized to its content and the body collapsed to almost nothing. */
  height: 85vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  /* `inset: 0` + `margin: auto` centers a fixed-position dialog in the viewport.
     Without explicit `margin: auto`, Chrome/Safari pin it to top:0/left:0. */
  margin: auto;
}
dialog::backdrop {
  background: hsl(0 0% 0% / 0.85);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--fg-90);
}
.modal-close {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-40);
  transition: color 0.2s;
}
.modal-close:hover { color: var(--fg); }
.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

/* ── Blueprints shelf ───────────────────────────────────────────────────── */
@keyframes swingStick1 {
  0%, 100% { transform: rotate(-20deg); }
  50%       { transform: rotate(20deg); }
}
@keyframes swingStick2 {
  0%, 100% { transform: rotate(30deg); }
  50%       { transform: rotate(-30deg); }
}
.anim-swing-1 {
  animation: swingStick1 3s ease-in-out infinite;
  transform-origin: 50px 40px;
}
.anim-swing-2 {
  animation: swingStick2 1.8s ease-in-out infinite;
  transform-origin: 50px 8px;
}

.shelf { max-width: 900px; margin: 0 auto; }
.shelf-row {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 2rem;
  min-height: 150px;
  padding-bottom: 0;
}
@media (min-width: 640px) { .shelf-row { gap: 3rem; min-height: 170px; } }
.shelf-line { height: 1px; background: hsl(0 0% 100% / 0.2); }
.shelf-row + .shelf-row { margin-top: 2rem; }

.shelf-item {
  position: relative;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.shelf-item__label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-50);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.shelf-item__svg { width: 100px; height: 100px; }
.shelf-item--books  .shelf-item__svg { width: 180px; }
.shelf-item--health .shelf-item__svg { width: 150px; }
@media (min-width: 640px) {
  .shelf-item__svg { width: 120px; height: 120px; }
  .shelf-item--books  .shelf-item__svg { width: 220px; }
  .shelf-item--health .shelf-item__svg { width: 180px; }
}

/* Music notes: hidden until hover */
.shelf-item .music-note { opacity: 0; pointer-events: none; }
.shelf-item:hover .music-note { opacity: 1; }
.shelf-item:hover .music-note-1 { animation: musicNoteFloat1 1.5s ease-out infinite; }
.shelf-item:hover .music-note-2 { animation: musicNoteFloat2 1.8s ease-out 0.3s infinite; }
.shelf-item:hover .music-note-3 { animation: musicNoteFloat3 1.6s ease-out 0.6s infinite; }

/* Speech bubble popup */
.shelf-popup {
  display: none;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  width: 220px;
  box-shadow: 0 4px 24px hsl(0 0% 0% / 0.5);
}
@media (min-width: 640px) { .shelf-popup { width: 260px; } }
.shelf-popup.is-left  { right: calc(100% + 10px); }
.shelf-popup.is-right { left: calc(100% + 10px); }
.shelf-popup.is-open  { display: block; }
.shelf-popup__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 8px; height: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
}
.shelf-popup.is-left  .shelf-popup__arrow { right: -5px; border-left: none; border-bottom: none; }
.shelf-popup.is-right .shelf-popup__arrow { left: -5px;  border-right: none; border-top: none; }
.shelf-popup__title {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--fg-90);
}
.shelf-popup__body {
  font-size: 11px;
  line-height: 1.65;
  color: var(--fg-50);
  white-space: pre-line;
}
.shelf-popup__close {
  margin-top: 10px;
  font-size: 10px;
  color: var(--fg-40);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  transition: color 0.2s;
}
.shelf-popup__close:hover { color: var(--fg); }

/* ── Mental Models quiz ─────────────────────────────────────────────────── */
.mm-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}
.mm-tab {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 10px 20px;
  border: none;
  background: none;
  color: var(--fg-40);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s, border-color 0.2s;
}
.mm-tab:hover { color: var(--fg-70); }
.mm-tab.is-active { color: var(--fg); border-bottom-color: var(--fg); }

.mm-panel { display: none; }
.mm-panel.is-active { display: block; }

.mm-progress {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-30);
  margin-bottom: 1.25rem;
}
.mm-situation {
  border: 1px solid var(--border);
  padding: 20px 24px;
  margin-bottom: 1.25rem;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fg-70);
}
.mm-options { display: flex; flex-direction: column; gap: 8px; margin-bottom: 1.25rem; }
.mm-opt {
  width: 100%;
  text-align: left;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: none;
  color: var(--fg-60);
  font-size: 12px;
  line-height: 1.6;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.mm-opt:not([disabled]):hover { border-color: hsl(0 0% 40%); background: hsl(0 0% 100% / 0.02); }
.mm-opt[disabled] { cursor: default; }
.mm-opt.is-correct { border-left: 2px solid hsl(0 0% 80%); }
.mm-opt.is-wrong   { border-left: 2px solid hsl(0 40% 35%); }
.mm-opt__letter { font-family: var(--font-mono); font-size: 11px; color: var(--fg-25); margin-right: 8px; }

.mm-reveal {
  border: 1px solid var(--border);
  padding: 20px 24px;
  margin-bottom: 1rem;
}
.mm-reveal__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-30);
  margin-bottom: 12px;
}
.mm-reveal__text { font-size: 12px; line-height: 1.7; color: var(--fg-60); }
.mm-cue {
  border: 1px solid hsl(0 0% 100% / 0.06);
  background: hsl(0 0% 100% / 0.015);
  padding: 16px 20px;
  margin-bottom: 1rem;
}
.mm-cue__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-25);
  margin-bottom: 8px;
}
.mm-cue__text { font-size: 11px; line-height: 1.65; color: var(--fg-45); font-style: italic; }

.mm-nav {
  display: flex;
  justify-content: space-between;
  padding-top: 8px;
}
.mm-nav-btn {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-30);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s;
}
.mm-nav-btn:hover { color: var(--fg-60); }

/* Spot mode */
.mm-spot-text {
  border: 1px solid var(--border);
  padding: 20px 24px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fg-70);
  margin-bottom: 1rem;
  cursor: pointer;
  transition: border-color 0.2s;
}
.mm-spot-text:hover { border-color: hsl(0 0% 40%); }
.mm-spot-hint {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--fg-30);
  margin-bottom: 1.25rem;
}
.mm-spot-model {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-60);
  margin-bottom: 8px;
}

/* Teach mode */
.mm-teach-q {
  font-size: 13px;
  line-height: 1.7;
  color: var(--fg-70);
  border: 1px solid var(--border);
  padding: 20px 24px;
  margin-bottom: 1rem;
  cursor: pointer;
  transition: border-color 0.2s;
}
.mm-teach-q:hover { border-color: hsl(0 0% 40%); }
.mm-teach-a {
  font-size: 12px;
  line-height: 1.7;
  color: var(--fg-60);
  border-left: 2px solid hsl(0 0% 100% / 0.2);
  padding: 12px 16px;
  margin-bottom: 8px;
  display: none;
}
.mm-teach-a.is-open { display: block; }
.mm-teach-hint {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--fg-30);
  margin-bottom: 1.5rem;
}

/* Reference table */
.mm-ref-table { width: 100%; border-collapse: collapse; }
.mm-ref-table th {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-40);
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}
.mm-ref-table td {
  font-size: 12px;
  color: var(--fg-60);
  padding: 12px 12px;
  border-bottom: 1px solid hsl(0 0% 100% / 0.05);
  vertical-align: top;
}
.mm-ref-table td:first-child { color: var(--fg-80); white-space: nowrap; padding-right: 24px; }

/* References (quotes) page */
.ref-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) { .ref-grid { grid-template-columns: repeat(2, 1fr); } }

.ref-card {
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 24px 28px;
  box-shadow: 0 2px 20px -8px hsl(0 0% 100% / 0.06);
}
.ref-card__context {
  font-size: 10px;
  color: var(--fg-30);
  font-style: italic;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.ref-card__quote {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--fg-80);
  font-style: italic;
  font-weight: 300;
  margin-bottom: 20px;
}
.ref-card__footer {
  padding-top: 12px;
  border-top: 1px solid hsl(0 0% 100% / 0.05);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
}
.ref-card__name {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-50);
}
.ref-card__relation {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--fg-30);
  margin-top: 2px;
}
.ref-card__source {
  font-size: 10px;
  color: var(--fg-25);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s;
}
.ref-card__source:hover { color: var(--fg-60); }