/* 登录 / 安装 / 通用表单样式 */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: #0E1726;
  color: #E8EEFB;
  -webkit-font-smoothing: antialiased;
}

/* 登录 */
.login-wrap {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(47,111,237,.18), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(23,182,201,.12), transparent 55%),
    #0E1726;
}
.login-card {
  width: 380px;
  max-width: 100%;
  background: #152238;
  border: 1px solid #233250;
  border-radius: 14px;
  padding: 34px 30px;
  box-shadow: 0 24px 60px rgba(0,0,0,.45);
}
.brand { text-align: center; margin-bottom: 24px; }
.brand-logo { font-size: 40px; line-height: 1; margin-bottom: 10px; }
.brand h1 { font-size: 19px; margin: 0 0 6px; font-weight: 600; }
.brand p { font-size: 12px; color: #9FB0CC; margin: 0; }

.field { display: block; margin-bottom: 16px; }
.field span { display: block; font-size: 12px; color: #9FB0CC; margin-bottom: 7px; }
.field input {
  width: 100%;
  background: #0E1726;
  border: 1px solid #2A3B5E;
  color: #E8EEFB;
  border-radius: 8px;
  padding: 11px 13px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.field input:focus { border-color: #2F6FED; }

.btn {
  display: inline-block;
  font-size: 14px;
  border-radius: 8px;
  padding: 11px 16px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary {
  background: #2F6FED; color: #fff; width: 100%;
  border: none; font-size: 15px; padding: 12px;
}
.btn-primary:hover { background: #3d7bf5; }
.btn-block { display: block; width: 100%; }
.login-foot { text-align: center; color: #6C7D9C; font-size: 11px; margin: 16px 0 0; }

.alert { border-radius: 8px; padding: 10px 14px; font-size: 13px; margin-bottom: 18px; line-height: 1.6; }
.alert-error { background: rgba(224,71,63,.14); border: 1px solid #E0473F; color: #f5a39f; }
.alert-success { background: rgba(22,163,107,.14); border: 1px solid #16A36B; color: #7fe0b4; }

/* 安装向导 */
.install-body {
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 20px;
  background:
    radial-gradient(1000px 500px at 80% -10%, rgba(47,111,237,.16), transparent 60%),
    #0E1726;
}
.install-card {
  width: 520px; max-width: 100%;
  background: #152238; border: 1px solid #233250;
  border-radius: 14px; padding: 32px;
  box-shadow: 0 24px 60px rgba(0,0,0,.4);
}
.install-card label { display: block; font-size: 12px; color: #9FB0CC; margin-bottom: 14px; }
.install-card input {
  width: 100%; margin-top: 6px; box-sizing: border-box;
  background: #0E1726; border: 1px solid #2A3B5E; color: #E8EEFB;
  border-radius: 8px; padding: 10px 12px; font-size: 13px; outline: none;
}
.install-card input:focus { border-color: #2F6FED; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-section {
  font-size: 13px; color: #17B6C9; margin: 22px 0 14px;
  padding-bottom: 8px; border-bottom: 1px solid #233250;
}
.form-tip { text-align: center; color: #6C7D9C; font-size: 11px; margin-top: 14px; }