:root {
  --auth-max-width: 420px;
}

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background-color: #f4f4f4;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.auth-card {
  width: 100%;
  max-width: var(--auth-max-width);
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 24px;
  backdrop-filter: blur(3px);
}

.auth-card h1 {
  font-size: 24px;
  margin-bottom: 8px;
}

.auth-subtitle {
  color: var(--completed-text);
  margin-bottom: 20px;
  font-size: 14px;
}

.auth-field {
  margin-bottom: 12px;
}

.auth-field label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
}

.auth-field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  background-color: var(--input-bg);
  color: var(--text-color);
  font-size: 14px;
}

.auth-row {
  display: flex;
  gap: 8px;
}

.auth-row input {
  flex: 1;
}

.auth-btn {
  width: 100%;
  border: 1px solid var(--border-color);
  background-color: var(--bg-color);
  color: var(--text-color);
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
}

.auth-btn:hover {
  background-color: var(--hover-bg);
}

.auth-btn.primary {
  border-color: var(--today-border);
}

#wechat-login-btn {
  background-color: #07c160;
  border-color: #07c160;
  color: #ffffff;
  margin-top: 8px;
}

#wechat-login-btn:hover {
  background-color: #06ad56;
  border-color: #06ad56;
}

.auth-check {
  margin: 14px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.auth-link {
  margin-top: 14px;
  text-align: center;
  font-size: 13px;
}

.auth-error {
  min-height: 20px;
  color: #c0392b;
  margin-bottom: 8px;
  font-size: 13px;
}

.auth-wechat-hint {
  margin-top: 6px;
  text-align: center;
  font-size: 12px;
  color: var(--completed-text);
}

.auth-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-modal.hidden {
  display: none;
}

.auth-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.auth-modal-box {
  position: relative;
  width: 100%;
  max-width: 400px;
  background-color: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 22px 20px 18px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}

.auth-modal-title {
  font-size: 18px;
  margin-bottom: 12px;
}

.auth-modal-text {
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 10px;
}

.auth-modal-text-muted {
  color: var(--completed-text);
  font-size: 13px;
}

.auth-modal-box .auth-btn {
  margin-top: 8px;
}