:root {
  --fondo: #0f1115;
  --panel: #161920;
  --panel-2: #1c202a;
  --borde: #262b36;
  --texto: #e8eaf0;
  --texto-2: #98a0b3;
  --acento: #e87d0d;
  --acento-2: #ffb35c;
  --error: #f85149;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html { height: 100%; }

body {
  margin: 0;
  height: 100dvh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  display: grid;
  grid-template-columns: 300px 1fr;
  overflow: hidden;
}

/* ---------------- sidebar ---------------- */

#sidebar {
  background: var(--panel);
  border-right: 1px solid var(--borde);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

#sidebar header {
  padding: 16px 16px 10px;
}

#sidebar h1 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

#sidebar h1 span { color: var(--acento); }

#estado {
  margin-top: 4px;
  font-size: 12px;
  color: var(--texto-2);
}

.buscador-fila { padding: 0 12px 10px; }

#buscador {
  width: 100%;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--borde);
  background: var(--panel-2);
  color: var(--texto);
  font-size: 13px;
  outline: none;
}

#buscador:focus { border-color: var(--acento); }

#lista {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px 8px;
  min-height: 0;
}

.modelo {
  padding: 9px 10px;
  border-radius: 8px;
  cursor: pointer;
  border-left: 3px solid transparent;
  margin-bottom: 2px;
}

.modelo:hover { background: var(--panel-2); }

.modelo.activo {
  background: var(--panel-2);
  border-left-color: var(--acento);
}

.modelo .nombre {
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.modelo .meta {
  margin-top: 3px;
  font-size: 11.5px;
  color: var(--texto-2);
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge {
  background: var(--panel-2);
  border: 1px solid var(--borde);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--acento-2);
}

.modelo.activo .badge { background: var(--fondo); }

.vacio-lista {
  margin: 20px 10px;
  font-size: 12.5px;
  color: var(--texto-2);
  line-height: 1.6;
  text-align: center;
}

#pie {
  padding: 10px 16px;
  border-top: 1px solid var(--borde);
  font-size: 11.5px;
  color: var(--texto-2);
}

/* ---------------- visor ---------------- */

#visor {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  position: relative;
}

#topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--borde);
  flex-wrap: wrap;
}

#titulo {
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 40vw;
}

.spacer { flex: 1; }

#stats {
  font-size: 11.5px;
  color: var(--texto-2);
  white-space: nowrap;
}

button {
  font: inherit;
  font-size: 12.5px;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--borde);
  background: var(--panel-2);
  color: var(--texto);
  cursor: pointer;
}

button:hover { border-color: var(--acento); color: var(--acento-2); }

button.activo {
  background: rgba(232, 125, 13, 0.15);
  border-color: var(--acento);
  color: var(--acento-2);
}

#btn-menu { display: none; }

#selector-escenas {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--texto-2);
}

#escenas {
  font: inherit;
  font-size: 12.5px;
  padding: 5px 8px;
  border-radius: 8px;
  border: 1px solid var(--borde);
  background: var(--panel-2);
  color: var(--texto);
}

#canvas-wrap {
  flex: 1;
  position: relative;
  min-height: 0;
}

#lienzo { width: 100%; height: 100%; display: block; }

#vacio {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--texto-2);
  pointer-events: none;
}

#vacio h2 { margin: 0 0 6px; font-size: 17px; color: var(--texto); }
#vacio p { margin: 0; font-size: 13px; line-height: 1.6; }

/* ---------------- overlay / toast ---------------- */

#overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(10, 12, 16, 0.55);
  backdrop-filter: blur(2px);
  z-index: 5;
}

#overlay .caja {
  background: var(--panel);
  border: 1px solid var(--borde);
  border-radius: 12px;
  padding: 22px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}

.spinner {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 3px solid var(--borde);
  border-top-color: var(--acento);
  animation: girar 0.9s linear infinite;
}

@keyframes girar { to { transform: rotate(360deg); } }

#overlay-barra { width: 220px; accent-color: var(--acento); }

#toast {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel);
  border: 1px solid var(--borde);
  border-left: 3px solid var(--acento);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 13px;
  z-index: 6;
  max-width: 80vw;
}

#toast.error { border-left-color: var(--error); }

/* ---------------- móvil ---------------- */

@media (max-width: 760px) {
  body { grid-template-columns: 1fr; }

  #sidebar {
    position: fixed;
    z-index: 20;
    inset: 0 30% 0 0;
    min-width: 240px;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }

  body.menu-abierto #sidebar { transform: translateX(0); }
  #btn-menu { display: inline-block; }
  #titulo { max-width: 46vw; }
}