/* 唯一的登录页（2026-10-05）。配色、字体、品牌标和管理后台（admin.css）是同一套。 */
:root {
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: #edf0f6;
  background: #080a0f;
  font-synthesis: none;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 72% 0, #3c2a7d33, transparent 38%), #0a0c11; }
button, input { font: inherit; }

.login-page { min-height: 100vh; display: grid; place-items: center; align-content: center; gap: 18px; padding: 24px 16px; }
.login-card { width: min(400px, 100%); padding: 32px 30px 26px; border: 1px solid #252832; border-radius: 20px; background: #11141b; box-shadow: 0 24px 70px #0000004d; }

.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; }
.brand-mark { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 13px; font-weight: 900; background: linear-gradient(145deg, #8c72ff, #4f40ce); box-shadow: 0 12px 32px #614ddb4d; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 16px; letter-spacing: .02em; }
.brand small { margin-top: 3px; color: #737b8d; font-size: 11px; }

h1 { margin: 0 0 16px; font-size: 24px; letter-spacing: -.02em; }
.lead { margin: 14px 0 18px; min-height: 22px; color: #9aa0ae; font-size: 13px; line-height: 1.7; }

/* 2026-10-05「工程师和管理者应该像两个按钮一样，点哪一个就登哪个的号」 */
.role-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.role { display: grid; gap: 4px; justify-items: start; padding: 14px 16px; border: 1px solid #303440; border-radius: 13px;
  color: #aeb4c2; background: #0b0d12; text-align: left; cursor: pointer; transition: border-color .15s, background .15s, color .15s; }
.role strong { font-size: 16px; color: inherit; }
.role small { color: #737b8d; font-size: 12px; }
.role:hover { border-color: #4a4f60; color: #edf0f6; }
.role[aria-checked="true"] { border-color: #8068ff; color: #fff; background: linear-gradient(135deg, #6c55e433, #6c55e40d);
  box-shadow: 0 0 0 3px #8068ff1f; }
.role[aria-checked="true"] small { color: #b8adff; }
.role:focus-visible { outline: 2px solid #8068ff; outline-offset: 2px; }

form { display: grid; gap: 8px; }
label { margin-top: 6px; color: #aeb4c2; font-size: 12px; }
input { height: 44px; padding: 0 13px; border: 1px solid #303440; border-radius: 11px; color: #edf0f6; background: #0b0d12; outline: none; }
input:focus { border-color: #8068ff; box-shadow: 0 0 0 3px #8068ff26; }
button.primary { height: 46px; margin-top: 16px; border: 0; border-radius: 11px; color: #fff; font-weight: 750; background: linear-gradient(135deg, #836cff, #5943d5); cursor: pointer; box-shadow: 0 9px 28px #4f3ac53d; }
button.primary:disabled { opacity: .55; cursor: wait; }
.error { min-height: 20px; margin: 6px 0 0; color: #ff8a8a; font-size: 13px; }

.notes { margin: 18px 0 0; padding: 16px 0 0 18px; border-top: 1px solid #1e2129; color: #737b8d; font-size: 12px; line-height: 1.9; }
.footer { margin: 0; color: #535a69; font-size: 11px; }

@media (max-width: 420px) {
  .login-card { padding: 26px 20px 22px; }
}