:root {
  --font-body: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman",
    serif;
  --font-headings: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --bg: #080a0f;
  --panel: #12151c;
  --panel-soft: #181c26;
  --text: #ebe6dc;
  --muted: #a39b8f;
  --accent: #9eb6d4;
  --accent-soft: rgba(146, 194, 255, 0.14);
  --rule: #2a303c;
  --shadow: rgba(0, 0, 0, 0.4);
  --warm: #f0e6d6;
}

:root[data-theme="light"] {
  --bg: #f3efe8;
  --panel: #fffaf1;
  --panel-soft: #fff3dc;
  --text: #1e1a16;
  --muted: #5e5a57;
  --accent: #2050a8;
  --accent-soft: rgba(32, 80, 168, 0.1);
  --rule: #d8d0c3;
  --shadow: rgba(39, 30, 16, 0.14);
  --warm: #2a241c;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100%;
}

body {
  overflow-x: hidden;
}

.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

#ambient-canvas {
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.55;
}

.ambient-veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 12%, rgba(146, 194, 255, 0.12), transparent 42%),
    radial-gradient(circle at 82% 78%, rgba(120, 160, 220, 0.08), transparent 40%),
    linear-gradient(180deg, rgba(7, 11, 17, 0.2), var(--bg) 78%);
}

:root[data-theme="light"] .ambient-veil {
  background:
    radial-gradient(circle at 18% 12%, rgba(32, 80, 168, 0.08), transparent 42%),
    radial-gradient(circle at 82% 78%, rgba(160, 120, 60, 0.06), transparent 40%),
    linear-gradient(180deg, rgba(243, 239, 232, 0.35), var(--bg) 78%);
}

:root[data-theme="light"] #ambient-canvas {
  opacity: 0.35;
}

#app-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1rem;
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 3;
  border-bottom: 1px solid var(--rule);
}

.logo {
  font: 700 1.15rem var(--font-headings);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mobile-title {
  display: none;
  font-family: var(--font-headings);
  opacity: 0.9;
  max-width: 55vw;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#theme-toggle {
  border: 1px solid var(--rule);
  background: var(--panel-soft);
  color: var(--text);
  border-radius: 999px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
}

.layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 1rem;
  max-width: 1100px;
  margin: 0 auto;
  width: calc(100% - 2rem);
  padding: 1rem 0 2.5rem;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: sticky;
  top: 64px;
  align-self: start;
}

.section-link {
  text-align: left;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 90%, transparent);
  color: var(--text);
  padding: 0.58rem 0.9rem;
  font: 600 0.98rem var(--font-headings);
  cursor: pointer;
}

.section-link.active {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--rule));
  background: var(--accent-soft);
}

.reader {
  min-width: 0;
}

.reader-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
}

.crumbs {
  color: var(--muted);
  font-size: 0.95rem;
}

.crumbs a {
  color: var(--accent);
  text-decoration: none;
}

.coffeeshop-flag {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  white-space: nowrap;
}

.content-card {
  position: relative;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--panel), var(--bg) 45%),
    color-mix(in srgb, var(--panel) 94%, transparent)
  );
  border: 1px solid var(--rule);
  border-radius: 20px;
  box-shadow: 0 8px 28px var(--shadow);
  padding: 1.25rem 1.35rem 1.6rem;
}

.content-card.reading-card {
  max-width: 760px;
  margin: 0 auto;
  background: color-mix(in srgb, var(--panel) 92%, #1a1410 8%);
  border-color: color-mix(in srgb, var(--rule) 80%, #6a5a48);
}

:root[data-theme="light"] .content-card.reading-card {
  background: #fffaf3;
}

#content-area {
  max-width: 72ch;
  line-height: 1.72;
  font-size: 1.05rem;
}

body.reading-mode #content-area {
  max-width: 62ch;
  margin: 0 auto;
  font-size: 1.14rem;
  line-height: 1.84;
  color: color-mix(in srgb, var(--text) 97%, var(--warm));
}

body.reading-mode .essay-body p {
  margin: 0.95rem 0;
}

body.reading-mode .essay-body h2 {
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  font-size: 1.28rem;
}

body.reading-mode blockquote {
  margin: 1.15rem 0;
  padding: 0.35rem 0 0.35rem 1rem;
  color: color-mix(in srgb, var(--muted) 92%, var(--warm));
}

body.reading-mode .sidebar {
  opacity: 0.72;
}

.reading-progress {
  position: sticky;
  top: 0;
  height: 3px;
  margin: -1.25rem -1.35rem 1rem;
  background: transparent;
  overflow: hidden;
  border-radius: 20px 20px 0 0;
  z-index: 2;
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, transparent, var(--accent));
  transition: width 80ms linear;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-headings);
  letter-spacing: 0.02em;
  margin-top: 1.5rem;
  line-height: 1.25;
}

a {
  color: var(--accent);
}

blockquote {
  margin: 0.85rem 0;
  padding-left: 0.95rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

pre {
  overflow-x: auto;
  background: #0b111a;
  padding: 0.9rem;
  border-radius: 12px;
  border: 1px solid #223;
}

code,
pre {
  font-family: Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
}

ul,
ol {
  padding-left: 1.3rem;
}

.meta {
  color: var(--muted);
  margin-bottom: 0.8rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.65rem;
  font-size: 0.95rem;
}

.doc-card {
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 0.85rem 0.95rem;
  margin: 0.7rem 0;
  background: color-mix(in srgb, var(--panel-soft) 88%, transparent);
}

.doc-title {
  font: 700 1.05rem var(--font-headings);
  margin-bottom: 0.35rem;
}

.doc-title a {
  text-decoration: none;
}

.search-box {
  width: 100%;
  padding: 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--rule);
  background: var(--panel);
  color: var(--text);
  margin-bottom: 0.8rem;
  font-size: 1rem;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.5rem 0 0.85rem;
}

.pill {
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  font-size: 0.84rem;
  background: color-mix(in srgb, var(--panel) 80%, #000 20%);
}

.empty-state {
  color: var(--muted);
  padding: 0.5rem 0;
}

.section-intro h1 {
  margin-top: 0.2rem;
}

.section-intro p,
.section-lede {
  color: var(--muted);
  max-width: 60ch;
}

/* Arrival */
.arrival {
  padding: 0.4rem 0 0.2rem;
}

.arrival-kicker {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0 0 1rem;
}

.arrival-title {
  margin: 0.4rem 0 1.35rem;
  font-size: clamp(1.95rem, 4.6vw, 2.85rem);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: 0.005em;
  color: var(--warm);
}

.arrival-line {
  display: block;
}

.arrival-lede {
  color: var(--muted);
  max-width: 40ch;
  font-size: 1.06rem;
  line-height: 1.65;
  margin: 0 0 2rem;
}

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

.path-card {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--rule);
  border-radius: 18px;
  padding: 1.15rem 1.15rem 1.2rem;
  background: color-mix(in srgb, var(--panel-soft) 72%, transparent);
  min-height: 8.8rem;
  box-shadow: 0 6px 18px color-mix(in srgb, var(--shadow) 55%, transparent);
  transition: border-color 220ms ease, background 220ms ease, box-shadow 220ms ease;
}

.path-card:hover,
.path-card:focus-visible {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--rule));
  background: var(--accent-soft);
  outline: none;
}

.path-label {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.path-title {
  font: 650 1.12rem/1.3 var(--font-headings);
  color: var(--text);
}

.path-hint {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
  margin-top: auto;
}

/* Reading room list */
.paper-grid {
  display: grid;
  gap: 0.9rem;
}

.paper-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "idx title"
    "idx meta"
    "idx summary";
  gap: 0.15rem 0.9rem;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: 1rem 1.1rem;
  background: color-mix(in srgb, var(--panel-soft) 75%, transparent);
}

.paper-card:hover,
.paper-card:focus-visible {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--rule));
  outline: none;
}

.paper-index {
  grid-area: idx;
  font: 650 1.4rem var(--font-headings);
  color: var(--accent);
  opacity: 0.85;
  padding-top: 0.15rem;
}

.paper-title {
  grid-area: title;
  font: 700 1.2rem/1.3 var(--font-headings);
}

.paper-meta {
  grid-area: meta;
  color: var(--muted);
  font-size: 0.88rem;
}

.paper-summary {
  grid-area: summary;
  color: var(--muted);
  margin-top: 0.25rem;
  line-height: 1.5;
}

/* Essay reading */
.essay-kicker {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.76rem;
  color: var(--muted);
  margin: 0.4rem 0 0.6rem;
}

.essay-title {
  margin-top: 0.2rem;
  margin-bottom: 0.8rem;
  font-size: clamp(1.7rem, 3.5vw, 2.25rem);
}

.essay-body h2 {
  margin-top: 2rem;
}

.essay-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.5rem;
  align-items: center;
  margin: 0.4rem 0 1.1rem;
  font-size: 0.92rem;
}

.essay-nav-next {
  text-align: right;
}

.essay-nav-link {
  text-decoration: none;
  color: var(--accent);
}

.essay-nav-link.quiet {
  color: var(--muted);
}

.essay-nav-spacer {
  display: inline-block;
  min-height: 1em;
}

@media (max-width: 760px) {
  .layout {
    display: block;
    width: calc(100% - 1rem);
    padding: 0.8rem 0.5rem 2rem;
  }

  .logo {
    display: none;
  }

  .mobile-title {
    display: block;
  }

  .sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    margin-bottom: 0.9rem;
    opacity: 1 !important;
  }

  .section-link {
    border-radius: 999px;
    width: calc(50% - 0.25rem);
    font-size: 0.9rem;
    padding: 0.52rem 0.7rem;
  }

  .content-card {
    padding: 1rem;
    border-radius: 14px;
  }

  .reading-progress {
    margin: -1rem -1rem 0.85rem;
  }

  .path-grid {
    grid-template-columns: 1fr;
  }

  .arrival-title {
    font-size: clamp(1.7rem, 7vw, 2.1rem);
  }

  body.reading-mode #content-area {
    font-size: 1.08rem;
  }

  .essay-nav {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .essay-nav-next {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .path-card,
  .reading-progress-bar {
    transition: none;
  }

  #ambient-canvas {
    opacity: 0.35;
  }
}


/* first-night polish */
.section-link:focus-visible,
.path-card:focus-visible,
.paper-card:focus-visible,
.essay-nav-link:focus-visible,
#theme-toggle:focus-visible,
.search-box:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 80%, white);
  outline-offset: 2px;
}

.chalkboard-strip {
  margin: 1.6rem 0 0.4rem;
  padding: 1rem 1.1rem;
  border: 1px dashed color-mix(in srgb, var(--rule) 85%, var(--accent));
  border-radius: 14px;
  background: color-mix(in srgb, var(--panel) 70%, #0c0e12);
}

.chalkboard-strip h2 {
  margin: 0 0 0.55rem;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.chalkboard-line {
  margin: 0.4rem 0;
  color: color-mix(in srgb, var(--text) 94%, var(--warm));
  font-size: 1.05rem;
  line-height: 1.45;
}

.chalkboard-line.founder {
  color: var(--accent);
  font-style: italic;
}

.soft-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.2rem 0 0.2rem;
}

.soft-link-row a {
  text-decoration: none;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.soft-link-row a:hover,
.soft-link-row a:focus-visible {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--rule));
}

.content-card.reading-card {
  padding: 1.55rem 1.65rem 2rem;
}

@media (max-width: 760px) {
  .content-card.reading-card {
    padding: 1.1rem 1rem 1.5rem;
  }
  body.reading-mode #content-area {
    font-size: 1.08rem;
    line-height: 1.78;
  }
  .arrival {
    padding-top: 0.6rem;
  }
}