:root {
  --bg-top: #0b1017;
  --bg-bottom: #090d13;
  --panel: rgba(20, 27, 38, 0.82);
  --panel-strong: rgba(12, 18, 28, 0.92);
  --line: rgba(255, 255, 255, 0.08);
  --line-soft: rgba(255, 255, 255, 0.05);
  --ink: rgba(255, 255, 255, 0.9);
  --muted: rgba(255, 255, 255, 0.38);
  --accent: #cb4d45;
  --accent-glow: rgba(203, 77, 69, 0.26);
  --shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
}

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

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

body {
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 14%, var(--accent-glow), transparent 24%),
    radial-gradient(circle at 84% 20%, rgba(92, 119, 255, 0.09), transparent 22%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  padding: 14px;
}

.shell {
  min-height: calc(100vh - 28px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(15, 21, 31, 0.96), rgba(8, 12, 19, 0.98));
  box-shadow: var(--shadow);
  padding: 18px;
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.chrome {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  min-height: 78px;
  padding: 0 2px 18px;
  border-bottom: 1px solid var(--line-soft);
}

.traffic {
  display: flex;
  gap: 8px;
}

.light {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.18);
}

.red { background: #ff5f57; }
.amber { background: #ffbd2e; }
.green { background: #28c840; }

.title-block {
  min-width: 0;
}

.eyebrow {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h1,
h2,
p,
ol,
blockquote,
footer,
section,
article,
span {
  margin: 0;
}

h1 {
  margin-top: 5px;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1;
  letter-spacing: 0.02em;
}

h2 {
  margin-top: 4px;
  font-size: 20px;
  line-height: 1.1;
}

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

button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
  font: inherit;
  padding: 10px 14px;
  cursor: pointer;
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}

button:hover {
  border-color: var(--accent);
  box-shadow: 0 0 18px var(--accent-glow);
  transform: translateY(-1px);
}

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

.layout {
  min-height: calc(100vh - 190px);
  display: grid;
  grid-template-columns: minmax(220px, 250px) minmax(0, 1fr) minmax(260px, 320px);
  gap: 16px;
  padding: 18px 0;
}

.panel,
.citation-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(12px);
}

.panel {
  padding: 18px;
}

.panel-head {
  margin-bottom: 16px;
}

.sequence-list {
  list-style: none;
  display: grid;
  gap: 10px;
}

.sequence-button {
  width: 100%;
  text-align: left;
  padding: 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
}

.sequence-button.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 18px var(--accent-glow);
}

.sequence-title,
.sequence-source {
  display: block;
}

.sequence-title {
  color: var(--ink);
  font-size: 13px;
  line-height: 1.4;
}

.sequence-source {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.sequence-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.stage {
  display: grid;
  align-items: center;
}

.citation-card {
  position: relative;
  min-height: 100%;
  padding: 26px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 22px;
  background:
    radial-gradient(circle at 22% 14%, var(--accent-glow), transparent 26%),
    linear-gradient(180deg, rgba(11, 16, 25, 0.92), rgba(8, 12, 19, 0.98));
  transition: opacity 420ms ease, transform 420ms ease;
}

.citation-card.is-fading {
  opacity: 0;
  transform: translateY(12px);
}

.citation-card::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 16px;
  pointer-events: none;
}

.citation-head,
.attribution {
  position: relative;
  z-index: 1;
}

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

.lang-tag,
.counter {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.lang-tag {
  color: var(--accent);
}

.counter {
  color: var(--muted);
}

.citation-body {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 18px;
  align-content: center;
}

.quote-text,
.translation {
  display: grid;
}

.quote-text {
  gap: 5px;
}

.quote-text .line {
  display: block;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.18;
  font-style: italic;
  text-align: center;
  text-wrap: balance;
}

.translation {
  gap: 2px;
  opacity: 0.56;
}

.translation .line {
  display: block;
  font-size: clamp(14px, 1.7vw, 17px);
  line-height: 1.55;
  text-align: center;
  font-style: italic;
}

.attribution {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  text-align: center;
}

.author {
  color: var(--accent);
  font-size: 15px;
  letter-spacing: 0.03em;
}

.source {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.meaning-grid {
  display: grid;
  gap: 14px;
}

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

.meaning-label {
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.meaning-text {
  margin-top: 8px;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.65;
}

.key-idea {
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.24);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1.7;
}

.status {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.14em;
  font-family: "SF Mono", "Fira Code", monospace;
}

.status-sig {
  opacity: 0.5;
}

@media (max-width: 1120px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .stage {
    min-height: 0;
  }
}

@media (max-width: 720px) {
  body {
    padding: 8px;
  }

  .shell {
    min-height: calc(100vh - 16px);
    padding: 14px;
    border-radius: 22px;
  }

  .chrome {
    grid-template-columns: 1fr;
    align-items: start;
  }

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

  .citation-card {
    padding: 18px;
  }

  .citation-head,
  .status {
    flex-direction: column;
    align-items: flex-start;
  }

  .quote-text .line {
    font-size: clamp(24px, 8vw, 34px);
    text-align: left;
  }

  .translation .line,
  .attribution {
    text-align: left;
    align-items: flex-start;
  }
}