* { box-sizing: border-box; }
:root {
  --bg: #0e1116;
  --panel: #161b22;
  --border: #272d36;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --ok: #3fb950;
  --err: #f85149;
}
html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, system-ui, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--fg);
  -webkit-font-smoothing: antialiased;
}
.screen { min-height: 100vh; display: flex; flex-direction: column; }
.hidden { display: none !important; }

/* Login */
#login { align-items: center; justify-content: center; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 32px; width: 320px; display: flex; flex-direction: column; gap: 12px;
}
.card h1 { margin: 0; font-size: 28px; letter-spacing: -.5px; }
.card .sub { margin: 0 0 8px; color: var(--muted); font-size: 13px; }
input[type=password], input[type=text] {
  background: #0d1117; border: 1px solid var(--border); color: var(--fg);
  border-radius: 8px; padding: 10px 12px; font-size: 14px; outline: none;
}
input:focus { border-color: var(--accent); }
button {
  background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: 10px 14px; font-size: 14px; cursor: pointer; font-weight: 600;
}
button:hover { filter: brightness(1.1); }
.ghost { background: transparent; color: var(--muted); font-weight: 500; padding: 6px 10px; }
.ghost:hover { color: var(--fg); }
a.ghost { text-decoration: none; font-size: 14px; align-self: center; }
.error { color: var(--err); font-size: 13px; min-height: 16px; }

/* Barra superior */
.bar {
  display: flex; align-items: center; gap: 14px; padding: 10px 16px; flex-wrap: wrap;
  background: var(--panel); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; }
.status { color: var(--muted); font-size: 13px; margin-left: auto; }
.toggle { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 6px; cursor: pointer; }
.monitors { display: flex; gap: 6px; }
.monitors button {
  background: #21262d; color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: 4px 10px; font-size: 12px; font-weight: 500;
}
.monitors button.active { background: var(--accent); border-color: var(--accent); }
.setting { display: flex; align-items: center; gap: 5px; color: var(--muted); font-size: 12px; }
.setting input[type=range] { width: 80px; accent-color: var(--accent); }
.setting i { font-style: normal; color: var(--fg); min-width: 20px; text-align: right; }

/* Grilla de PCs */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; padding: 18px; }
.agent-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; cursor: pointer; transition: border-color .15s, transform .1s;
}
.agent-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.agent-card .name { font-weight: 600; font-size: 16px; }
.agent-card .meta { color: var(--muted); font-size: 12px; margin-top: 6px; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); margin-right: 6px; }
.empty { color: var(--muted); text-align: center; padding: 60px 20px; }

/* Modal */
.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.6);
  display: flex; align-items: center; justify-content: center; z-index: 10;
}
.modal .card { width: 300px; }

/* Instructivo */
.help-card { width: 640px; max-width: 92vw; max-height: 86vh; display: flex; flex-direction: column; padding: 0; }
.help-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.help-head h1 { font-size: 20px; margin: 0; }
.help-body { padding: 8px 20px 20px; overflow-y: auto; }
.help-body h2 { font-size: 15px; margin: 20px 0 8px; color: var(--fg); }
.help-body p { margin: 6px 0; color: #c9d1d9; font-size: 14px; line-height: 1.5; }
.help-body ul { margin: 6px 0; padding-left: 20px; color: #c9d1d9; font-size: 14px; line-height: 1.7; }
.help-body code { background: #0d1117; border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; font-size: 12px; }
.help-body .muted { color: var(--muted); font-size: 12.5px; }
.tag { background: var(--ok); color: #04260f; font-size: 11px; font-weight: 700; border-radius: 5px; padding: 2px 7px; vertical-align: middle; }
.cmd { position: relative; background: #0d1117; border: 1px solid var(--border); border-radius: 8px; margin: 8px 0; }
.cmd code { display: block; background: none; border: 0; padding: 12px 64px 12px 14px; white-space: pre-wrap; word-break: break-word; color: #e6edf3; font-size: 13px; line-height: 1.5; }
.cmd .copy { position: absolute; top: 8px; right: 8px; background: #21262d; border: 1px solid var(--border); color: var(--fg); border-radius: 6px; padding: 4px 10px; font-size: 12px; cursor: pointer; }
.cmd .copy:hover { background: var(--accent); border-color: var(--accent); }

/* Viewer */
#viewer { height: 100vh; overflow: hidden; }            /* sin scroll: ajustado al viewport */
#stage { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; background: #000; overflow: hidden; position: relative; }
#screen { max-width: 100%; max-height: 100%; image-rendering: auto; cursor: none; outline: none; touch-action: none; }

/* Teclado móvil */
.keybar {
  display: flex; gap: 6px; overflow-x: auto; padding: 8px;
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  background: var(--panel); border-top: 1px solid var(--border);
  -webkit-overflow-scrolling: touch;
}
.keybar button {
  flex: 0 0 auto; background: #21262d; color: var(--fg); border: 1px solid var(--border);
  border-radius: 8px; padding: 12px 14px; font-size: 15px; min-width: 46px; font-weight: 600;
}
.keybar button.active { background: var(--accent); border-color: var(--accent); }
#kbd { position: absolute; opacity: 0; width: 1px; height: 1px; bottom: 0; left: 0; border: 0; padding: 0; }

/* Touch / pantallas chicas */
@media (max-width: 820px) {
  .bar { gap: 8px; padding: 8px 10px; }
  .ghost, .monitors button { padding: 9px 11px; font-size: 13px; }
  .status { font-size: 11px; }
  .setting input[type=range] { width: 64px; }
}
/* Cursor remoto dibujado como overlay (movimiento suave, desacoplado del frame). */
#rcursor { position: absolute; left: 0; top: 0; pointer-events: none; display: none; image-rendering: auto; will-change: transform; }
/* En fullscreen el viewer ocupa toda la pantalla (barra arriba + canvas). */
#viewer:fullscreen { width: 100vw; height: 100vh; background: #000; }