:root {
  --bg-top: #08101a;
  --bg-bottom: #0d1420;
  --surface: rgba(13, 20, 32, 0.82);
  --surface-strong: rgba(8, 13, 22, 0.92);
  --card: rgba(18, 26, 40, 0.82);
  --line: rgba(146, 173, 214, 0.18);
  --line-soft: rgba(146, 173, 214, 0.08);
  --ink: #dbe7f5;
  --muted: #89a0bd;
  --accent: #7b92c7;
  --accent-soft: rgba(123, 146, 199, 0.16);
  --accent-strong: rgba(123, 146, 199, 0.28);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.38);
}

body.is-natural {
  --bg-top: #09111a;
  --bg-bottom: #0e1721;
  --surface: rgba(16, 22, 30, 0.82);
  --surface-strong: rgba(10, 14, 20, 0.92);
  --card: rgba(18, 25, 34, 0.82);
  --line: rgba(205, 187, 121, 0.2);
  --line-soft: rgba(205, 187, 121, 0.08);
  --ink: #edf1f6;
  --muted: #a4b2c1;
  --accent: #c8a050;
  --accent-soft: rgba(200, 160, 80, 0.16);
  --accent-strong: rgba(200, 160, 80, 0.3);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 16%, var(--accent-soft), transparent 24%),
    radial-gradient(circle at 84% 22%, rgba(87, 132, 208, 0.12), transparent 28%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
}

.bemol-bg {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: min(58vw, 720px);
  color: rgba(170, 186, 214, 0.05);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.site-shell {
  position: relative;
  z-index: 1;
  width: min(1580px, calc(100vw - 26px));
  min-height: calc(100vh - 26px);
  margin: 13px auto;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 30px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)),
    linear-gradient(180deg, rgba(12, 18, 29, 0.84), rgba(8, 13, 22, 0.94));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  overflow: hidden;
}

.site-shell::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 22px;
  pointer-events: none;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 4px 2px 22px;
  border-bottom: 1px solid var(--line-soft);
}

.eyebrow,
.pair-label,
.path-node,
.stage-kicker,
.active-index,
.status-copy,
.status-rule {
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
}

h1,
h2,
h3,
p,
ol,
blockquote,
footer {
  margin: 0;
}

h1,
h2,
.active-name,
.camus-quote {
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
}

h1 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 0.96;
  letter-spacing: 0.01em;
}

.subtitle {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

button {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
  font: inherit;
  padding: 10px 14px;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

button:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  box-shadow: 0 0 22px var(--accent-soft);
}

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

.layout {
  display: grid;
  grid-template-columns: minmax(250px, 310px) minmax(0, 1fr) minmax(280px, 340px);
  gap: 18px;
  padding: 22px 0 18px;
}

.panel,
.core-card,
.camus-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(14px);
}

.panel {
  padding: 18px;
}

.panel-head {
  margin-bottom: 18px;
}

.panel h2 {
  font-size: clamp(18px, 1.8vw, 26px);
  line-height: 1.08;
}

.path-list {
  list-style: none;
  display: grid;
  gap: 14px;
}

.path-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
}

.path-node {
  color: var(--accent);
  font-size: 11px;
  margin-top: 4px;
}

.path-title {
  font-size: 16px;
  line-height: 1.45;
  color: var(--ink);
}

.path-copy {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.dedication-grid {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.dedication-card,
.pair-card,
.rule-card {
  padding: 15px;
  border-radius: 18px;
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.02);
}

.dedication-card h3 {
  margin-top: 6px;
  font-size: 20px;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
}

.dedication-card p:last-child {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.6;
}

.stage {
  display: grid;
  gap: 18px;
  align-content: start;
}

.stage-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
}

.stage-kicker {
  color: var(--muted);
  font-size: 11px;
}

.stage-note {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  max-width: 36ch;
  text-align: right;
}

.orbital-stage {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 32px;
  background:
    radial-gradient(circle at 50% 48%, rgba(255, 255, 255, 0.05), transparent 22%),
    radial-gradient(circle at 50% 50%, var(--accent-soft), transparent 34%),
    linear-gradient(180deg, var(--surface-strong), rgba(10, 15, 24, 0.95));
  overflow: hidden;
}

.orbital-stage::before,
.orbital-stage::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.orbital-stage::before {
  width: min(78vw, 430px);
  height: min(78vw, 430px);
}

.orbital-stage::after {
  width: min(78vw, 310px);
  height: min(78vw, 310px);
}

.nuance-ring {
  position: absolute;
  inset: 0;
}

.nuance-button {
  position: absolute;
  top: 50%;
  left: 50%;
  width: clamp(120px, 12vw, 152px);
  padding: 12px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(12, 18, 30, 0.86);
  color: var(--ink);
  transform:
    translate(-50%, -50%)
    rotate(var(--angle))
    translateY(calc(-1 * var(--radius)))
    rotate(calc(-1 * var(--angle)));
  box-shadow: 0 14px 24px rgba(0, 0, 0, 0.18);
}

.nuance-button.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 0 30px var(--accent-soft);
}

.nuance-word,
.nuance-hint {
  display: block;
}

.nuance-word {
  font-size: 15px;
  line-height: 1.3;
}

.nuance-hint {
  margin-top: 5px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--muted);
}

.core-card {
  position: relative;
  z-index: 1;
  width: min(76vw, 340px);
  min-height: 250px;
  padding: 26px 24px;
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  gap: 12px;
  background:
    radial-gradient(circle at 50% 24%, var(--accent-soft), transparent 38%),
    linear-gradient(180deg, rgba(17, 24, 37, 0.96), rgba(10, 15, 24, 0.98));
  transition: opacity 360ms ease, transform 360ms ease;
}

.core-card.is-fading {
  opacity: 0;
  transform: translateY(8px);
}

.active-index {
  color: var(--accent);
  font-size: 11px;
}

.active-name {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 0.96;
  text-wrap: balance;
}

.active-line {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.5;
}

.active-sense {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 28ch;
}

.camus-card {
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  background: linear-gradient(180deg, rgba(14, 20, 31, 0.8), rgba(11, 16, 24, 0.95));
}

.camus-quote {
  font-size: clamp(22px, 2.3vw, 30px);
  line-height: 1.25;
  font-style: italic;
}

.camus-source {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.pair-grid {
  display: grid;
  gap: 12px;
}

.pair-label {
  color: var(--accent);
  font-size: 10px;
}

.pair-copy,
.rule-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.rule-card {
  margin-top: 14px;
  border-color: var(--accent-soft);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
}

.foundation {
  margin-top: 4px;
}

.phrase-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
}

.phrase-item {
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.02);
}

.phrase-num {
  display: block;
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.phrase-copy {
  display: block;
  margin-top: 10px;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: 20px;
  line-height: 1.35;
}

.status-bar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 18px 2px 4px;
  border-top: 1px solid var(--line-soft);
}

.status-copy,
.status-rule {
  font-size: 11px;
  color: var(--muted);
}

.status-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.status-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.status-links a:hover {
  color: var(--ink);
}

@media (max-width: 1180px) {
  .layout {
    grid-template-columns: minmax(220px, 290px) minmax(0, 1fr);
  }

  .meaning-panel {
    grid-column: 1 / -1;
  }

  .pair-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .topbar,
  .layout,
  .phrase-list,
  .status-bar {
    grid-template-columns: 1fr;
  }

  .controls {
    justify-content: flex-start;
  }

  .stage-note {
    text-align: left;
  }

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

  .orbital-stage {
    min-height: 640px;
  }

  .nuance-button {
    width: clamp(108px, 32vw, 148px);
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: calc(100vw - 18px);
    margin: 9px auto;
    padding: 14px;
  }

  .orbital-stage {
    min-height: 700px;
  }

  .nuance-button {
    --radius: 196px !important;
    padding: 10px 12px;
  }

  .core-card {
    width: min(88vw, 320px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}