/**
 * auth-modal.css — 注册/登录弹窗样式
 */

/* ============================================
   遮罩层
   ============================================ */
.auth-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.auth-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   弹窗主体
   ============================================ */
.auth-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: 90%;
  max-width: 400px;
  background: linear-gradient(145deg, #1a1a2e 0%, #16213e 100%);
  border-radius: 20px;
  padding: 32px 28px;
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.auth-modal.active {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

/* ============================================
   关闭按钮
   ============================================ */
.auth-modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: all 0.2s ease;
}

.auth-modal__close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: rotate(90deg);
}

/* ============================================
   标题区域
   ============================================ */
.auth-modal__header {
  text-align: center;
  margin-bottom: 28px;
}

.auth-modal__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 8px 0;
  font-family: 'Noto Serif SC', serif;
  letter-spacing: 0.05em;
}

.auth-modal__subtitle {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

/* ============================================
   表单
   ============================================ */
.auth-modal__form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.auth-modal__field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.auth-modal__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.02em;
}

.auth-modal__input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1rem;
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
  border: 1.5px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  outline: none;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.auth-modal__input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.auth-modal__input:focus {
  border-color: #a78bfa;
  background: rgba(167, 139, 250, 0.1);
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.2);
}

.auth-modal__input.error {
  border-color: #f87171;
  background: rgba(248, 113, 113, 0.1);
}

/* ============================================
   错误提示
   ============================================ */
.auth-modal__error {
  padding: 12px 14px;
  background: rgba(248, 113, 113, 0.15);
  border: 1px solid rgba(248, 113, 113, 0.3);
  border-radius: 10px;
  color: #fca5a5;
  font-size: 0.875rem;
  text-align: center;
}

/* ============================================
   提交按钮
   ============================================ */
.auth-modal__submit {
  position: relative;
  width: 100%;
  padding: 15px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 8px;
  overflow: hidden;
}

.auth-modal__submit::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.auth-modal__submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(102, 126, 234, 0.4);
}

.auth-modal__submit:hover:not(:disabled)::before {
  opacity: 1;
}

.auth-modal__submit:active:not(:disabled) {
  transform: translateY(0);
}

.auth-modal__submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* 按钮内加载动画 */
.auth-modal__spinner {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.auth-modal__spinner .spinner {
  width: 20px;
  height: 20px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ============================================
   底部切换链接
   ============================================ */
.auth-modal__footer {
  margin-top: 24px;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.auth-modal__footer span {
  margin-right: 4px;
}

.auth-modal__footer a {
  color: #a78bfa;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.auth-modal__footer a:hover {
  color: #c4b5fd;
  text-decoration: underline;
}

/* ============================================
   响应式 — 手机端
   ============================================ */
@media (max-width: 480px) {
  .auth-modal {
    width: 92%;
    padding: 28px 20px;
    border-radius: 16px;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    transform: translateY(100%);
    max-width: none;
  }

  .auth-modal.active {
    transform: translateY(0);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }

  .auth-modal-overlay {
    /* 手机端遮罩稍微透明，让弹窗更突出 */
  }

  .auth-modal__title {
    font-size: 1.5rem;
  }

  .auth-modal__input {
    padding: 13px 14px;
    font-size: 16px; /* 防止 iOS 缩放 */
  }

  .auth-modal__submit {
    padding: 14px 20px;
  }
}

/* ============================================
   星星装饰动画
   ============================================ */
.auth-modal::before,
.auth-modal::after {
  content: '✦';
  position: absolute;
  font-size: 1.25rem;
  color: rgba(167, 139, 250, 0.3);
  animation: twinkle 3s ease-in-out infinite;
}

.auth-modal::before {
  top: 20px;
  left: 20px;
  animation-delay: 0s;
}

.auth-modal::after {
  bottom: 30px;
  right: 25px;
  animation-delay: 1.5s;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.1); }
}

/* ============================================
   主题切换兼容
   ============================================ */
/* 如果未来支持浅色模式，添加对应样式 */