:root {
  --bg: #0f1115;
  --bg-soft: #171a21;
  --border: #2a2f3a;
  --fg: #d7dbe0;
  --muted: #8b93a1;
  --accent: #4f8cff;
  --accent-hover: #3d78e6;
  --danger: #ff6b6b;
  --ok: #4ade80;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}

body {
  display: flex;
  flex-direction: column;
}

/* ---------- 登录页 ---------- */
.center-page {
  align-items: center;
  justify-content: center;
}

.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  width: 340px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-card h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 1px;
}

.login-card .sub {
  margin: -6px 0 6px;
  color: var(--muted);
  font-size: 13px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

input {
  background: #0b0d11;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 11px;
  color: var(--fg);
  font-size: 14px;
  outline: none;
}

input:focus { border-color: var(--accent); }

button {
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: #fff;
  padding: 9px 14px;
  font-size: 14px;
  cursor: pointer;
}

button:hover { background: var(--accent-hover); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

button.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg);
}

button.ghost:hover { background: #22262f; }

.message {
  min-height: 18px;
  font-size: 13px;
  color: var(--danger);
}

.message.ok { color: var(--ok); }

/* ---------- 终端页 ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand {
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--accent);
}

.connect-form { 
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

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

select {
  background: #0b0d11;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 9px;
  color: var(--fg);
  font-size: 13px;
  outline: none;
  max-width: 200px;
}

select:focus { border-color: var(--accent); }

.host-list button { padding: 7px 10px; font-size: 13px; }

.connect-form input {
  padding: 7px 9px;
  font-size: 13px;
}

#host { width: 180px; }
#port { width: 80px; }
#ssh-user { width: 130px; }
#ssh-pass { width: 130px; }

.connect-form button { padding: 7px 12px; font-size: 13px; }

.spacer { flex: 1; }

.whoami { color: var(--muted); font-size: 13px; }

.status {
  padding: 5px 12px;
  font-size: 12px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  background: #12141a;
  white-space: pre-wrap;
}

.status.error { color: var(--danger); }
.status.ok { color: var(--ok); }

#terminal-wrap {
  flex: 1;
  min-height: 0;
  padding: 6px 8px;
  background: #0b0d11;
}

#terminal { height: 100%; width: 100%; }

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.modal.hidden { display: none; }

.modal-card { width: 320px; }

.modal-card h2 { margin: 0 0 6px; font-size: 17px; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}