:root {
  --bg: #0d0d10;
  --bg-radial: #16161e;
  --text: #f0ece4;
  --text-muted: #9a958c;
  --accent: #e8d4a2;
  --accent-glow: rgba(232, 212, 162, 0.45);
  --border: #2a2a30;
  --code-bg: #1a1a1f;
  --tooltip-bg: #1c1c22;
  --tooltip-text: #f0ece4;
  --copied: #a6d4a8;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #faf8f3;
    --bg-radial: #f3ede0;
    --text: #1a1a1f;
    --text-muted: #6b665d;
    --accent: #4a3c20;
    --accent-glow: rgba(74, 60, 32, 0.3);
    --border: #e0dccc;
    --code-bg: #f1ede4;
    --tooltip-bg: #33322e;
    --tooltip-text: #faf8f3;
    --copied: #4a7a4c;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Inter, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--bg-radial) 0%, var(--bg) 55%);
  z-index: -1;
  pointer-events: none;
}

main {
  width: 100%;
  max-width: 640px;
  padding: 6rem 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
}

.symbol-stage {
  position: relative;
  margin-bottom: 3rem;
}

.symbol-svg {
  width: 100%;
  max-width: 280px;
  height: auto;
  color: var(--accent);
  cursor: pointer;
  transition: filter 0.35s ease;
  user-select: none;
}

.symbol-svg path {
  fill: none;
  stroke: currentColor;
  stroke-width: 28;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.symbol-stage:hover .symbol-svg {
  filter: drop-shadow(0 0 22px var(--accent-glow)) drop-shadow(0 0 8px var(--accent-glow));
}

.tooltip {
  position: absolute;
  bottom: -2.5rem;
  left: 50%;
  transform: translateY(8px);
  background: var(--tooltip-bg);
  color: var(--tooltip-text);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.tooltip::after {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  margin-left: -6px;
  border: 6px solid transparent;
  border-bottom-color: var(--tooltip-bg);
}

.symbol-stage:hover .tooltip {
  opacity: 1;
  transform: translateY(0);
}

.copied-indicator {
  position: absolute;
  top: -1.75rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--copied);
  font-size: 0.8rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.copied-indicator.visible {
  opacity: 1;
}

h1 {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: center;
  margin-bottom: 0.25rem;
}

.etymology {
  font-style: italic;
  color: var(--text-muted);
  text-align: center;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.etymology-gloss {
  color: var(--text-muted);
  text-align: center;
  font-size: 0.9rem;
  margin-bottom: 1.75rem;
}

.unicode-provenance {
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 2rem;
  line-height: 1.75;
}

.motto {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.definition {
  text-align: center;
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto 3rem;
  line-height: 1.8;
  color: var(--text);
}

.usage {
  width: 100%;
  max-width: 520px;
  margin: 0 auto 3rem;
}

.usage h2 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 1.25rem;
  text-align: center;
  color: var(--text);
}

.usage-examples {
  border-left: 3px solid var(--border);
  padding-left: 1.25rem;
  margin-bottom: 2rem;
}

.usage-examples p {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.7;
}

.usage-guide {
  display: grid;
  gap: 0.75rem;
}

.usage-item {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.92rem;
}

.usage-item .label {
  color: var(--text-muted);
  font-weight: 500;
  min-width: 7rem;
  flex-shrink: 0;
}

.usage-item code,
.usage-item .value {
  font-family: "SF Mono", "Fira Code", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 0.88rem;
  color: var(--accent);
}

button.copy-btn {
  background: var(--code-bg);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-family: "SF Mono", "Fira Code", Consolas, monospace;
  font-size: 1rem;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.1s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  vertical-align: middle;
}

button.copy-btn:hover {
  border-color: var(--accent);
}

button.copy-btn:active {
  transform: scale(0.95);
}

footer {
  width: 100%;
  padding: 1.5rem 1.5rem 2.5rem;
  text-align: center;
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

footer a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

@media (max-width: 480px) {
  main {
    padding: 3.5rem 1rem 2rem;
  }

  .symbol-svg {
    max-width: 220px;
  }

  h1 {
    font-size: 1.6rem;
  }

  .usage-item {
    flex-direction: column;
    gap: 0.25rem;
  }

  .usage-item .label {
    min-width: 0;
  }
}