.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 12% 0%, #e8f1ff, transparent 45%),
    radial-gradient(circle at 92% 100%, #e6f8ec, transparent 40%),
    var(--color-bg);
  padding: 24px;
}

.login-box {
  width: 100%;
  max-width: 430px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.12);
  padding: 34px 30px 28px;
}

.login-header h2 {
  margin: 0;
  text-align: left;
  font-size: 26px;
  color: var(--color-text);
}

.login-header .hint {
  margin: 8px 0 0;
  text-align: left;
}

.login-tabs {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.login-tab {
  border: 1px solid #cbd5e1;
  border-radius: 999px;
  background: #f8fafc;
  color: #334155;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.login-tab:hover {
  border-color: #94a3b8;
}

.login-tab.is-active {
  background: #ecf4ff;
  color: #0f4c81;
  border-color: #9fc2ee;
}

.login-tab:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.login-panel {
  display: none;
  margin-top: 16px;
  padding: 16px;
  border: 1px solid #dbe3ef;
  border-radius: 14px;
  background: linear-gradient(180deg, #fcfdff 0%, #f8fbff 100%);
}

.login-panel.active {
  display: block;
}

.login-panel .form-grid {
  max-width: none;
  gap: 14px;
}

.login-panel .button {
  width: 100%;
  padding: 12px;
  font-size: 15px;
}

.login-panel .button-secondary {
  width: 100%;
  background: #1677ff;
  color: #fff;
  border: 1px solid #1677ff;
}

.login-panel .button-secondary:hover:not(:disabled) {
  background: #0f66dc;
  border-color: #0f66dc;
}

.login-panel .button-secondary:disabled {
  background: #9ec5ff;
  border-color: #9ec5ff;
  color: #ffffff;
  opacity: 0.8;
}

.login-panel .input {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
}

.login-box .hint {
  text-align: left;
  color: var(--color-muted);
  font-size: 13px;
  margin: 0 0 12px;
}

.login-alt-methods {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed #d9e2ef;
}

.login-alt-methods .alt-title {
  margin: 0 0 10px;
  color: #64748b;
  font-size: 12px;
}

.login-alt-methods .alt-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.login-alt-methods .alt-btn {
  width: 100%;
  border-radius: 999px;
  border: 1px solid #d5deea;
  color: #64748b;
  background: #f8fafc;
}

.login-alt-methods .alt-btn:disabled {
  opacity: 0.8;
}

.login-box #message {
  text-align: left;
  margin-top: 12px;
  font-size: 14px;
  min-height: 20px;
}

.login-box #message.error {
  color: var(--color-danger);
}

.login-box #message.success {
  color: var(--color-success);
}

@media (max-width: 540px) {
  .login-page {
    align-items: flex-start;
    padding: 16px;
  }

  .login-box {
    margin-top: 18px;
    padding: 24px 18px 20px;
    border-radius: 12px;
  }

  .login-header h2 {
    font-size: 22px;
  }

  .login-tabs {
    gap: 8px;
  }

  .login-tab {
    font-size: 13px;
    padding: 9px 10px;
  }

  .login-panel {
    padding: 12px;
  }

  .login-alt-methods .alt-actions {
    grid-template-columns: 1fr;
  }
}