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

body {
  font-family: "Plus Jakarta Sans", "Microsoft YaHei", "Hiragino Sans", sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0c0d16;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 48px 48px;
  color: #eaedf3;
  -webkit-font-smoothing: antialiased;
}

.login-card {
  width: 360px;
  background: #161824;
  border: 1px solid #252840;
  border-radius: 20px;
  padding: 2.5rem 2rem 2rem;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
  animation: fadeUp 0.5s ease-out;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-brand {
  text-align: center;
  margin-bottom: 2rem;
}
.login-brand-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, #f43f5e, #e11d48);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  box-shadow: 0 6px 24px rgba(244,63,94,0.3);
  margin-bottom: 1rem;
}
.login-brand h1 {
  font-family: "Sora", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.login-brand p {
  font-size: 0.78rem;
  color: #5c6180;
  font-weight: 500;
}

.login-input {
  width: 100%;
  padding: 12px 16px;
  background: #1c1e2e;
  border: 1px solid #252840;
  border-radius: 12px;
  color: #eaedf3;
  font-size: 0.92rem;
  font-family: inherit;
  outline: none;
  transition: all 0.2s;
  margin-bottom: 1rem;
}
.login-input::placeholder { color: #5c6180; }
.login-input:focus {
  border-color: #f43f5e;
  box-shadow: 0 0 0 3px rgba(244,63,94,0.2);
  background: #232640;
}

.login-btn {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #f43f5e, #e11d48);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 16px rgba(244,63,94,0.25);
}
.login-btn:hover {
  box-shadow: 0 6px 24px rgba(244,63,94,0.35);
  transform: translateY(-1px);
}
.login-btn:active {
  transform: translateY(0);
}

.login-error {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.2);
  color: #ef4444;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 10px 14px;
  border-radius: 10px;
  margin-bottom: 1rem;
  text-align: center;
}

@media (max-width: 480px) {
  .login-card {
    width: calc(100% - 32px);
    max-width: 360px;
    padding: 2rem 1.5rem 1.5rem;
    border-radius: 16px;
  }
  .login-brand-icon { width: 44px; height: 44px; font-size: 1.2rem; border-radius: 14px; }
  .login-brand h1 { font-size: 1.05rem; }
  .login-brand { margin-bottom: 1.5rem; }
  .login-input { padding: 10px 14px; font-size: 0.88rem; }
  .login-btn { padding: 10px; font-size: 0.88rem; }
}