:root {
  color-scheme: dark;
  --bg: #0f1115;
  --panel: #171a21;
  --line: #2a2f3a;
  --text: #e6e9ef;
  --muted: #8b93a5;
  --accent: #4c8dff;
  --danger: #ff5c5c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

body.center {
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.card {
  width: min(380px, 92vw);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .45);
}

h1 {
  margin: 0 0 6px;
  font-size: 22px;
  letter-spacing: .5px;
}

h1 span { color: var(--muted); font-size: 14px; font-weight: 400; }

.hint { margin: 0 0 22px; color: var(--muted); font-size: 13px; }

label {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--muted);
}

input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 11px 12px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: #0f1218;
  color: var(--text);
  font-size: 15px;
  letter-spacing: 1px;
}

input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button {
  width: 100%;
  margin-top: 6px;
  padding: 11px;
  border: 0;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
}

button:disabled { opacity: .55; cursor: progress; }

.error { margin: 14px 0 0; color: var(--danger); font-size: 13px; }

/* ---------- 远控页 ---------- */
body.remote {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  flex: none;
}

.toolbar .spacer { flex: 1; }

.status { color: var(--muted); }
.status.ok { color: #4ade80; }
.status.err { color: var(--danger); }

button.ghost {
  width: auto;
  margin: 0;
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 13px;
}

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

.select {
  width: auto;
  margin: 0;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #0f1218;
  color: var(--text);
  font-size: 13px;
}

.stage {
  position: relative;
  flex: 1;
  min-height: 0;
  display: grid;
  place-items: center;
  background: #000;
}

#screen {
  width: 100%;
  height: 100%;
  object-fit: contain;
  cursor: default;
  background: #000;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  pointer-events: none;
  background: rgba(0, 0, 0, .35);
}

.overlay[hidden] { display: none; }