@import url('https://fonts.googleapis.com/css2?family=Anton&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --bg-deep: #121018;
  --bg-panel: #1c1926;
  --bg-panel-alt: #241f31;
  --border: #35304244;
  --amber: #f2b84b;
  --pink: #e8578a;
  --teal: #3fc7b0;
  --text: #f3efe6;
  --text-dim: #6f6a78;
  --paper: #f6f1e4;
  --paper-ink: #2b2620;
  --paper-line: #e2d9c2;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg-deep);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  overflow: hidden;
}

/* ---------- Barra superior ---------- */
.topbar {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #1a1622, #120f18);
}

.brand {
  font-family: 'Anton', sans-serif;
  letter-spacing: .09em;
  font-size: 18px;
  color: var(--amber);
  /* text-transform: uppercase; */
}

.topbar-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-controls button {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  height: 30px;
  padding: 0 10px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}
.topbar-controls button:hover { border-color: var(--amber); }

#font-level {
  font-size: 12px;
  color: var(--text-dim);
  width: 40px;
  text-align: center;
  display: inline-block;
}

.hint {
  font-size: 11px;
  color: var(--text-dim);
  margin-left: 10px;
  border-left: 1px solid var(--border);
  padding-left: 10px;
}

/* ---------- Escenario de 3 columnas (serpiente) ---------- */
.snake-stage {
  height: calc(100vh - 52px);
  display: flex;
  gap: 2px;
  background: var(--bg-deep);
  padding: 2px;
}

.snake-col {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--paper);
  box-shadow: 0 0 0 1px #000 inset;
}

.snake-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 26px 30px;
  color: var(--paper-ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.song-block {
  margin-bottom: 46px;
}

.song-header {
  font-family: 'Inter', sans-serif;
  border-bottom: 2px solid var(--paper-line);
  padding-bottom: 8px;
  margin-bottom: 8px;
}
.song-title {
  font-weight: 700;
  font-size: 1.25em;
  color: #1d3f38;
  word-break: break-all;
}

.song-from {
  font-size: 0.72em;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: #554f40;
  margin-top: 2px;
}

.song-body { white-space: pre-wrap; }

.song-fallback {
  background: #fff7e6;
  border: 1px dashed #d8b26a;
  border-radius: 6px;
  padding: 12px 14px;
  font-family: 'Inter', sans-serif;
  font-size: 0.85em;
  color: #6b5a2e;
}

.song-fallback a {
  color: #1d6f5f;
  font-weight: 600;
}

/* ---------- Estado vacío ---------- */
.empty-state {
  position: fixed;
  inset: 52px 0 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  color: var(--text-dim);
  text-align: center;
  pointer-events: none;
}
.empty-state .big { font-size: 40px; }

/* copia oculta usada solo para medir alto real del contenido */
.snake-master {
  position: absolute;
  top: -99999px;
  left: -99999px;
  visibility: hidden;
}

/* ---------- Toasts de mensajes ---------- */
.toast-area {
  position: fixed;
  top: 64px;
  right: 16px;
  width: 300px;
  z-index: 50;
  pointer-events: none;
}

.toast {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  border-left: 4px solid var(--pink);
  border-radius: 8px;
  padding: 12px 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,.45);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity .35s ease, transform .35s ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast .who {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--pink);
  margin-bottom: 3px;
}

.toast .txt {
  font-size: 14px;
  line-height: 1.4;
  word-break: break-word;
}

/* ---------- Botón reiniciar ---------- */
.reset-btn {
  position: fixed;
  bottom: 10px;
  left: 10px;
  font-size: 11px;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 9px;
  cursor: pointer;
  opacity: .4;
  z-index: 50;
}
.reset-btn:hover { opacity: 1; }

.qr-float {
  position: fixed;
  right: 16px;
  bottom: 16px;
  /* width: min(170px, 14vw); */
  max-width: 5vw;
  z-index: 9999;
  pointer-events: none;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
  background: rgba(255,255,255,.98);
  padding: 2px;
}