:root {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #22272e;
  background: #0e2230;
  font-synthesis: none;
  font-size: 14px;
  line-height: 1.5;
  --accent: #009fd4;
  --accent-dark: #007da8;
  --muted: #66707b;
  --line: #eceef0;
}

* { box-sizing: border-box; }
body { margin: 0; }

.login-page {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
  background:
    radial-gradient(900px 520px at 18% 8%, #164863 0%, transparent 62%),
    radial-gradient(760px 480px at 88% 96%, #0c3547 0%, transparent 58%),
    linear-gradient(150deg, #0c1d2a, #12303f 55%, #0b2231);
}

.login-panel {
  width: min(100%, 430px);
  padding: 38px 38px 30px;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 26px 80px #00101966;
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.login-brand span {
  color: #22272e;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.2px;
}

.dali-wordmark {
  display: block;
  width: 96px;
  height: 29px;
  padding: 7px 10px;
  border-radius: 6px;
  background: #0e2230;
  box-sizing: content-box;
}

.login-panel h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -0.6px;
  color: #1b222a;
}

.login-lead {
  margin: 12px 0 26px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.login-error {
  margin: 0 0 18px;
  padding: 11px 13px;
  border: 1px solid #f0d9d4;
  border-radius: 6px;
  background: #fcf3f1;
  color: #a34f47;
  font-size: 13px;
  line-height: 1.7;
}

.login-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 46px;
  padding: 12px 16px;
  border-radius: 7px;
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 550;
  text-decoration: none;
  transition: background 0.14s, border-color 0.14s;
}

.login-button:hover { background: #008fc0; border-color: #008fc0; }
.login-button:focus-visible { outline: 2px solid var(--accent-dark); outline-offset: 3px; }

.login-note {
  margin: 20px 0 0;
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}

.login-back {
  display: inline-block;
  margin-top: 22px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.login-back:hover { color: var(--accent-dark); border-bottom-color: var(--accent-dark); }

@media (max-width: 480px) {
  .login-page { padding: 18px 12px; }
  .login-panel { padding: 28px 22px 24px; border-radius: 10px; }
  .login-panel h1 { font-size: 21px; }
}