:root {
  --bg: #f7f7f8;
  --panel: #ffffff;
  --border: #e3e3e6;
  --text: #1e1e1e;
  --accent: #6741d9;
  --accent-soft: #efeafc;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  font-family: "Segoe UI", Roboto, system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  user-select: none;
}

/* ---------- Barra de herramientas ---------- */
#toolbar {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
  z-index: 10;
  max-width: 95vw;
  flex-wrap: wrap;
}

.group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.group + .group {
  padding-left: 14px;
  border-left: 1px solid var(--border);
}

button.tool,
#actions button {
  border: 1px solid transparent;
  background: transparent;
  border-radius: 9px;
  width: 38px;
  height: 38px;
  font-size: 18px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.12s, border-color 0.12s;
}

#actions button {
  width: auto;
  padding: 0 12px;
  font-size: 14px;
  gap: 4px;
}

button.tool:hover,
#actions button:hover {
  background: var(--bg);
}

button.tool.active {
  background: var(--accent-soft);
  border-color: var(--accent);
}

/* ---------- Estilos de trazo ---------- */
.swatch-label {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
}

#color {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: none;
  cursor: pointer;
  padding: 0;
}
#color::-webkit-color-swatch { border: 1px solid var(--border); border-radius: 50%; }
#color::-webkit-color-swatch-wrapper { padding: 0; }

.palette {
  display: flex;
  gap: 4px;
}
.palette .dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
}
.palette .dot.active { border-color: var(--accent); }

.stroke input { cursor: pointer; }

/* ---------- Estado / presencia ---------- */
.badge {
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 20px;
  background: var(--bg);
  white-space: nowrap;
}
#presence { color: #2f9e44; font-weight: 600; }

/* ---------- Lienzo ---------- */
#board {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background:
    radial-gradient(circle, #d9d9de 1px, transparent 1px) 0 0 / 24px 24px;
  cursor: crosshair;
}

/* ======================= Vistas (auth / lobby) ======================= */
.view { position: absolute; inset: 0; }
.hidden { display: none !important; }
.center { display: grid; place-items: center; padding: 20px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
  padding: 24px;
}

.brand { font-size: 26px; margin: 0 0 4px; }
.brand-sm { font-weight: 700; }
.muted { color: #8a8a90; font-size: 14px; margin: 0 0 18px; }
.error { color: #e03131; font-size: 13px; min-height: 18px; margin: 6px 0 0; }

/* --- Login / registro --- */
#view-auth .card { width: 360px; max-width: 92vw; }

.tabs { display: flex; gap: 6px; margin-bottom: 18px; }
.tab {
  flex: 1; padding: 9px; border: 1px solid var(--border);
  background: var(--bg); border-radius: 9px; cursor: pointer; font-size: 14px;
}
.tab.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); font-weight: 600; }

form { display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: #555; }

input[type="text"], input[type="password"] {
  padding: 11px 12px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 15px; outline: none; background: #fff;
}
input[type="text"]:focus, input[type="password"]:focus { border-color: var(--accent); }

button.primary {
  background: var(--accent); color: #fff; border: none; border-radius: 10px;
  padding: 11px 16px; font-size: 15px; cursor: pointer; font-weight: 600;
}
button.primary:hover { filter: brightness(1.06); }
button.primary.small { padding: 7px 14px; font-size: 13px; }

button.ghost {
  background: transparent; border: 1px solid var(--border); border-radius: 9px;
  padding: 7px 12px; cursor: pointer; font-size: 14px;
}
button.ghost:hover { background: var(--bg); }

/* --- Lobby --- */
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--border);
}
.spacer { flex: 1; }

.lobby-body {
  padding: 24px; max-width: 920px; margin: 0 auto;
  display: grid; gap: 20px;
}
.lobby-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.lobby-actions .card { min-width: 0; }   /* permitir que las columnas 1fr encojan */
.lobby-actions .card h2,
.boards h2 { margin: 0 0 14px; font-size: 17px; }
.lobby-actions form { flex-direction: row; }
.lobby-actions input { flex: 1; min-width: 0; }
.lobby-actions button { flex: 0 0 auto; }
.code-input { text-transform: uppercase; letter-spacing: 3px; font-weight: 600; }

.board-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.board-list li {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 11px;
}
.b-info { flex: 1; display: flex; flex-direction: column; }
.b-name { font-weight: 600; }
.b-meta { font-size: 12px; color: #8a8a90; letter-spacing: 1px; }

@media (max-width: 640px) {
  .lobby-actions { grid-template-columns: 1fr; }
}

/* --- Chip de codigo para compartir (en la barra de la pizarra) --- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent);
  border-radius: 20px; padding: 5px 12px; font-size: 13px; font-weight: 600;
  cursor: pointer; letter-spacing: 1px;
}
.chip:hover { filter: brightness(0.97); }