/* ============================================
   NSTL 用户登录认证 - 模态窗口样式
   ============================================ */

/* ==================== 全屏遮罩层 ==================== */

.auth-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 200ms ease-in-out;
}

/* 淡入动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* 淡出动画 */
@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

.auth-overlay.hiding {
  animation: fadeOut 200ms ease-in-out forwards;
}

/* ==================== 模态窗口容器 ==================== */

.auth-modal {
  position: relative;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3),
              0 0 0 1px rgba(0, 0, 0, 0.05);
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: scaleIn 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* 缩放进入动画 */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* 缩放退出动画 */
@keyframes scaleOut {
  from {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  to {
    opacity: 0;
    transform: scale(0.95) translateY(-10px);
  }
}

.auth-modal.hiding {
  animation: scaleOut 200ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* ==================== 模态窗口头部 ==================== */

.auth-modal-header {
  flex-shrink: 0;
  padding: 24px 24px 20px;
  border-bottom: 1px solid #f3f4f6;
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  position: relative;
}

/* Logo 容器 */
.auth-logo {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 16px rgba(124, 58, 237, 0.25);
}

.auth-logo svg {
  width: 32px;
  height: 32px;
  color: #ffffff;
}

/* 标题 */
.auth-modal-title {
  font-size: 20px;
  font-weight: 600;
  color: #1f2937;
  text-align: center;
  margin: 0;
  letter-spacing: -0.3px;
}

/* 副标题 */
.auth-modal-subtitle {
  font-size: 14px;
  color: #6b7280;
  text-align: center;
  margin: 0;
  line-height: 1.5;
}

/* 关闭按钮 */
.auth-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  color: #6b7280;
}

.auth-close-btn:hover {
  background: #ffffff;
  color: #374151;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.auth-close-btn:active {
  transform: scale(0.95);
}

.auth-close-btn svg {
  width: 18px;
  height: 18px;
}

/* ==================== iframe 容器 ==================== */

.auth-iframe-container {
  flex: 1;
  min-height: 0;
  position: relative;
  background: #ffffff;
  overflow: hidden;
}

.auth-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
  background: #ffffff;
}

/* iframe 加载状态 */
.auth-iframe-loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  gap: 16px;
}

.auth-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid #f3f4f6;
  border-top-color: #7c3aed;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.auth-loading-text {
  font-size: 14px;
  color: #6b7280;
}

/* ==================== 模态窗口底部（可选） ==================== */

.auth-modal-footer {
  flex-shrink: 0;
  padding: 16px 24px;
  border-top: 1px solid #f3f4f6;
  background: #fafafa;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.auth-footer-text {
  font-size: 12px;
  color: #9ca3af;
  text-align: center;
  line-height: 1.5;
}

.auth-footer-link {
  color: #7c3aed;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.auth-footer-link:hover {
  color: #6d28d9;
  text-decoration: underline;
}

/* ==================== 错误提示样式 ==================== */

.auth-error-container {
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.auth-error-icon {
  width: 48px;
  height: 48px;
  background: #fee2e2;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #dc2626;
}

.auth-error-icon svg {
  width: 24px;
  height: 24px;
}

.auth-error-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f2937;
  margin: 0;
}

.auth-error-message {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.6;
  margin: 0;
}

.auth-error-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.auth-btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  font-family: inherit;
}

.auth-btn-primary {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.3);
}

.auth-btn-primary:hover {
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
  transform: translateY(-1px);
}

.auth-btn-primary:active {
  transform: translateY(0);
}

.auth-btn-secondary {
  background: #ffffff;
  color: #374151;
  border: 1px solid #e5e7eb;
}

.auth-btn-secondary:hover {
  background: #f9fafb;
  border-color: #d1d5db;
}

/* ==================== 超时提示样式 ==================== */

.auth-timeout-container {
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.auth-timeout-icon {
  width: 48px;
  height: 48px;
  background: #fef3c7;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #f59e0b;
}

.auth-timeout-icon svg {
  width: 24px;
  height: 24px;
}

.auth-timeout-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f2937;
  margin: 0;
}

.auth-timeout-message {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.6;
  margin: 0;
}

/* ==================== 消息提示样式 ==================== */

.auth-message {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10001;
  background: #ffffff;
  border-radius: 12px;
  padding: 16px 24px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15),
              0 0 0 1px rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  max-width: 500px;
  animation: slideDown 200ms ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.auth-message.hiding {
  animation: slideUp 200ms ease-in forwards;
}

@keyframes slideUp {
  from {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  to {
    opacity: 0;
    transform: translateX(-50%) translateY(-10px);
  }
}

.auth-message-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.auth-message-content {
  flex: 1;
  font-size: 14px;
  color: #374151;
  line-height: 1.5;
}

/* 消息类型样式 */
.auth-message.success {
  border-left: 4px solid #10b981;
}

.auth-message.success .auth-message-icon {
  color: #10b981;
}

.auth-message.error {
  border-left: 4px solid #ef4444;
}

.auth-message.error .auth-message-icon {
  color: #ef4444;
}

.auth-message.warning {
  border-left: 4px solid #f59e0b;
}

.auth-message.warning .auth-message-icon {
  color: #f59e0b;
}

.auth-message.info {
  border-left: 4px solid #3b82f6;
}

.auth-message.info .auth-message-icon {
  color: #3b82f6;
}

/* ==================== 响应式设计 ==================== */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) {
  .auth-modal {
    max-width: 420px;
  }
}

/* 移动设备 (最大 768px) */
@media (max-width: 768px) {
  .auth-overlay {
    padding: 16px;
  }

  .auth-modal {
    max-width: 100%;
    max-height: 85vh;
    border-radius: 12px;
  }

  .auth-modal-header {
    padding: 20px 20px 16px;
  }

  .auth-logo {
    width: 48px;
    height: 48px;
  }

  .auth-logo svg {
    width: 28px;
    height: 28px;
  }

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

  .auth-modal-subtitle {
    font-size: 13px;
  }

  .auth-close-btn {
    width: 28px;
    height: 28px;
    top: 12px;
    right: 12px;
  }

  .auth-close-btn svg {
    width: 16px;
    height: 16px;
  }

  .auth-modal-footer {
    padding: 12px 20px;
  }

  .auth-message {
    min-width: 280px;
    max-width: calc(100vw - 32px);
    padding: 12px 20px;
  }
}

/* 小屏幕移动设备 (最大 480px) */
@media (max-width: 480px) {
  .auth-overlay {
    padding: 12px;
  }

  .auth-modal {
    max-height: 90vh;
    border-radius: 10px;
  }

  .auth-modal-header {
    padding: 16px 16px 12px;
    gap: 10px;
  }

  .auth-logo {
    width: 44px;
    height: 44px;
  }

  .auth-logo svg {
    width: 26px;
    height: 26px;
  }

  .auth-modal-title {
    font-size: 17px;
  }

  .auth-modal-subtitle {
    font-size: 12px;
  }

  .auth-error-container,
  .auth-timeout-container {
    padding: 20px;
  }

  .auth-error-icon,
  .auth-timeout-icon {
    width: 40px;
    height: 40px;
  }

  .auth-error-icon svg,
  .auth-timeout-icon svg {
    width: 20px;
    height: 20px;
  }

  .auth-error-title,
  .auth-timeout-title {
    font-size: 15px;
  }

  .auth-error-message,
  .auth-timeout-message {
    font-size: 13px;
  }

  .auth-btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .auth-error-actions {
    flex-direction: column;
    width: 100%;
  }

  .auth-btn {
    width: 100%;
  }

  .auth-message {
    min-width: auto;
    width: calc(100vw - 24px);
    padding: 10px 16px;
    font-size: 13px;
  }
}

/* ==================== 辅助功能和可访问性 ==================== */

/* 聚焦样式 */
.auth-close-btn:focus-visible,
.auth-btn:focus-visible,
.auth-footer-link:focus-visible {
  outline: 2px solid #7c3aed;
  outline-offset: 2px;
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
  .auth-overlay,
  .auth-modal,
  .auth-message,
  .auth-spinner {
    animation: none;
  }

  .auth-close-btn,
  .auth-btn,
  .auth-footer-link {
    transition: none;
  }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
  .auth-overlay {
    background: rgba(0, 0, 0, 0.8);
  }

  .auth-modal {
    border: 2px solid #000000;
  }

  .auth-close-btn,
  .auth-btn-secondary {
    border: 2px solid #000000;
  }
}

/* ==================== 打印样式 ==================== */

@media print {
  .auth-overlay,
  .auth-modal,
  .auth-message {
    display: none !important;
  }
}