:root {
  --bg: #0d1117;
  --bg-2: #161b22;
  --bg-3: #21262d;
  --border: #30363d;
  --fg: #e6edf3;
  --fg-dim: #8b949e;
  --accent: #2f81f7;
  --accent-2: #1f6feb;
  --green: #3fb950;
  --red: #f85149;
  --yellow: #d29922;
  --radius: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg); color: var(--fg);
  font-size: 14px;
}

button {
  font: inherit; color: var(--fg);
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 10px; cursor: pointer;
}
button:hover { background: #2d333b; }
button.primary { background: var(--accent-2); border-color: var(--accent-2); }
button.primary:hover { background: var(--accent); }
button:disabled { opacity: .5; cursor: not-allowed; }

input, select, textarea {
  font: inherit; color: var(--fg);
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 8px;
}
input:focus, select:focus, textarea:focus { outline: 1px solid var(--accent); }

.hidden { display: none !important; }

/* ---------- login ---------- */
#login {
  display: flex; align-items: center; justify-content: center;
  height: 100vh;
}
.login-card {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; width: 320px;
}
.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card p { margin: 0 0 20px; color: var(--fg-dim); }
.login-card label { display: block; margin: 12px 0 4px; color: var(--fg-dim); }
.login-card input { width: 100%; }
.login-card button { width: 100%; margin-top: 18px; }
.login-error { color: var(--red); margin-top: 12px; min-height: 18px; font-size: 13px; }

/* ---------- app shell ---------- */
#app { display: grid; grid-template-columns: 280px 1fr; height: 100vh; }
@media (max-width: 760px) { #app { grid-template-columns: 1fr; } }

.sidebar {
  background: var(--bg-2); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden;
}
.sidebar-head {
  padding: 14px 16px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.sidebar-head h2 { margin: 0; font-size: 16px; }
.sidebar-head .logout { padding: 4px 8px; font-size: 12px; }
.server-list { overflow-y: auto; flex: 1; padding: 8px; }

.server-card {
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: 6px; padding: 10px 12px; margin-bottom: 8px; cursor: pointer;
}
.server-card:hover { border-color: var(--accent); }
.server-card.active { border-color: var(--accent); background: #1c2333; }
.server-card .row { display: flex; align-items: center; gap: 8px; }
.server-card .name { font-weight: 600; flex: 1; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--fg-dim); }
.dot.online { background: var(--green); box-shadow: 0 0 6px var(--green); }
.server-card .meta { color: var(--fg-dim); font-size: 12px; margin-top: 4px; }
.caps { display: flex; gap: 4px; margin-top: 6px; }
.badge {
  font-size: 10px; text-transform: uppercase; letter-spacing: .04em;
  padding: 1px 6px; border-radius: 10px; border: 1px solid var(--border);
  color: var(--fg-dim);
}
.badge.on { color: var(--green); border-color: var(--green); }

.empty { color: var(--fg-dim); padding: 20px; text-align: center; }

/* ---------- workspace ---------- */
.workspace { display: flex; flex-direction: column; overflow: hidden; }
.ws-head {
  padding: 12px 18px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 14px;
}
.ws-head h2 { margin: 0; font-size: 17px; }
.tabs { display: flex; gap: 4px; margin-left: auto; }
.tab {
  padding: 6px 14px; border-radius: 6px 6px 0 0; background: transparent;
  border: 1px solid transparent; color: var(--fg-dim);
}
.tab.active { color: var(--fg); background: var(--bg-2); border-color: var(--border); border-bottom-color: var(--bg-2); }

.tab-body { flex: 1; overflow: hidden; position: relative; }
.tab-pane { position: absolute; inset: 0; display: flex; flex-direction: column; }
.tab-pane.hidden { display: none; }

/* VNC toolbar */
.toolbar {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  padding: 8px 12px; background: var(--bg-2); border-bottom: 1px solid var(--border);
}
.toolbar .group { display: flex; gap: 4px; align-items: center; padding-right: 8px; border-right: 1px solid var(--border); }
.toolbar .group:last-child { border-right: none; }
.toolbar label { color: var(--fg-dim); font-size: 12px; display: flex; align-items: center; gap: 4px; }
.toolbar input[type=range] { width: 90px; }
.toolbar .stat { font-size: 12px; color: var(--fg-dim); font-variant-numeric: tabular-nums; }

#vnc-screen { flex: 1; background: #000; overflow: hidden; position: relative; }
#vnc-status { padding: 6px 12px; font-size: 12px; color: var(--fg-dim); background: var(--bg-2); border-top: 1px solid var(--border); }

.clipboard-row { display: flex; flex-direction: column; gap: 4px; padding: 8px 12px; background: var(--bg-2); border-top: 1px solid var(--border); }
.clipboard-row textarea { width: 100%; height: 48px; resize: vertical; }

/* SSH pane */
.ssh-info { padding: 24px; max-width: 720px; }
.ssh-info h3 { margin-top: 0; }
.code-block {
  display: flex; align-items: center; gap: 8px; margin: 10px 0;
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  padding: 10px 12px; font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
}
.code-block code { flex: 1; white-space: pre-wrap; word-break: break-all; }
#ssh-term { flex: 1; background: #000; }

/* Audio/info pane */
.info-pane { padding: 24px; max-width: 720px; }
.info-pane h3 { margin-top: 0; }
.audio-controls { display: flex; align-items: center; gap: 12px; margin: 16px 0; }
.kv { display: grid; grid-template-columns: 120px 1fr; gap: 6px 16px; margin-top: 12px; }
.kv .k { color: var(--fg-dim); }

.toast {
  position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%);
  background: var(--bg-3); border: 1px solid var(--border); border-radius: 6px;
  padding: 8px 16px; color: var(--fg); opacity: 0; transition: opacity .2s;
  pointer-events: none; z-index: 50;
}
.toast.show { opacity: 1; }