/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #f5f7fa;
}

body {
  overflow-x: hidden;
}

/* 容器 */
.container {
  width: 100%;
  min-height: 100vh;
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

/* PC端适配 */
@media (min-width: 768px) {
  .container {
    margin-top: 20px;
    min-height: calc(100vh - 40px);
    border-radius: 12px;
  }
}

/* Toast提示 */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  padding: 12px 24px;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  z-index: 9999;
  transition: transform 0.3s ease;
  max-width: 80%;
  text-align: center;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.toast-success {
  background: #52c41a;
}

.toast-error {
  background: #ff4d4f;
}

.toast-warning {
  background: #faad14;
}

/* Loading */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
}

.loading-spinner {
  text-align: center;
}

.spinner {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-text {
  color: #fff;
  font-size: 14px;
}

/* 导航栏 */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #fff;
  border-bottom: 1px solid #f0f0f0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.back-btn {
  padding: 8px;
  background: transparent;
  border: none;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
}

.back-btn:active {
  opacity: 0.6;
}

.navbar-title {
  font-size: 18px;
  font-weight: 600;
  color: #333;
}

.navbar-right button {
  padding: 6px 12px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 6px;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.2s;
}

.navbar-right button:active {
  transform: scale(0.95);
}

/* 空状态 */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
}

.empty-icon {
  font-size: 64px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-text {
  font-size: 16px;
  color: #999;
}

/* 响应式 */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
}