/* 助力圈样式 */
:root {
  --hc-primary: #FF6B35;
  --hc-primary-light: #FFB299;
  --hc-secondary: #4ECDC4;
  --hc-accent: #FFE66D;
  --hc-dark: #2D3436;
  --hc-gray: #636E72;
  --hc-light-gray: #B2BEC3;
  --hc-bg: #FFF9F5;
  --hc-card-bg: #FFFFFF;
  --hc-success: #00B894;
  --hc-warning: #FDCB6E;
  --hc-danger: #E17055;
  --hc-shadow: 0 8px 32px rgba(255, 107, 53, 0.12);
  --hc-shadow-lg: 0 16px 48px rgba(255, 107, 53, 0.18);
  --hc-radius: 16px;
  --hc-radius-sm: 8px;
}

.helpchain-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Hero */
.helpchain-hero {
  text-align: center;
  padding: 40px 0 30px;
}

.helpchain-hero h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--hc-primary), var(--hc-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.helpchain-hero p {
  color: var(--hc-gray);
  font-size: 16px;
}

.helpchain-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 20px;
}

.helpchain-stat {
  text-align: center;
}

.helpchain-stat-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--hc-primary);
}

.helpchain-stat-label {
  font-size: 13px;
  color: var(--hc-gray);
}

/* 发布区域 */
.helpchain-publish {
  background: var(--hc-card-bg);
  border-radius: var(--hc-radius);
  padding: 24px;
  box-shadow: var(--hc-shadow);
  margin-bottom: 24px;
}

.helpchain-publish h3 {
  font-size: 18px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid #eee;
}

.helpchain-field {
  margin-bottom: 16px;
}

.helpchain-field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--hc-dark);
}

.helpchain-field textarea,
.helpchain-field input[type="text"] {
  width: 100%;
  padding: 14px;
  border: 2px solid #E8E8E8;
  border-radius: var(--hc-radius-sm);
  font-size: 14px;
  transition: all 0.2s ease;
}

.helpchain-field textarea:focus,
.helpchain-field input[type="text"]:focus {
  outline: none;
  border-color: var(--hc-primary);
}

.helpchain-hint {
  font-size: 12px;
  color: var(--hc-light-gray);
  margin-top: 6px;
}

.helpchain-platform-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: #FFF5F0;
  border-radius: 20px;
  font-size: 13px;
  color: var(--hc-primary);
  margin-top: 8px;
}

/* 选项卡 */
.helpchain-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

@media (max-width: 600px) {
  .helpchain-options {
    grid-template-columns: 1fr;
  }
}

.helpchain-option {
  padding: 14px;
  border: 2px solid #E8E8E8;
  border-radius: var(--hc-radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  background: #FAFAFA;
}

.helpchain-option:hover {
  border-color: var(--hc-primary-light);
}

.helpchain-option.selected {
  border-color: var(--hc-primary);
  background: #FFF5F0;
}

.helpchain-option-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}

.helpchain-option-desc {
  font-size: 12px;
  color: var(--hc-light-gray);
}

.helpchain-time-picker {
  display: none;
  margin-top: 12px;
  padding: 12px;
  background: #F9F9F9;
  border-radius: var(--hc-radius-sm);
}

.helpchain-time-picker.show {
  display: block;
}

/* 发布按钮 */
.helpchain-publish-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}

.helpchain-btn {
  padding: 12px 24px;
  border-radius: var(--hc-radius-sm);
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.helpchain-btn-primary {
  background: linear-gradient(135deg, var(--hc-primary), #FF8C5A);
  color: white;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
}

.helpchain-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.helpchain-btn-outline {
  background: transparent;
  color: var(--hc-primary);
  border: 2px solid var(--hc-primary);
}

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

/* 筛选栏 */
.helpchain-filter {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.helpchain-filter-btn {
  padding: 8px 16px;
  border-radius: 20px;
  border: none;
  background: #F0F0F0;
  color: var(--hc-gray);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.helpchain-filter-btn:hover {
  background: #E8E8E8;
}

.helpchain-filter-btn.active {
  background: var(--hc-primary);
  color: white;
}

/* 卡片列表 */
.helpchain-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.helpchain-card {
  background: var(--hc-card-bg);
  border-radius: var(--hc-radius);
  padding: 20px;
  box-shadow: var(--hc-shadow);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.helpchain-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--hc-shadow-lg);
}

.helpchain-card.expired {
  opacity: 0.7;
}

.helpchain-card.expired::before {
  content: '已失效';
  position: absolute;
  top: 16px;
  right: -24px;
  background: var(--hc-danger);
  color: white;
  padding: 4px 36px;
  font-size: 11px;
  transform: rotate(45deg);
}

.helpchain-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.helpchain-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.helpchain-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--hc-primary-light), var(--hc-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 14px;
}

.helpchain-username {
  font-weight: 600;
  font-size: 14px;
}

.helpchain-time {
  font-size: 12px;
  color: var(--hc-light-gray);
}

.helpchain-platform {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: #F5F5F5;
  border-radius: 14px;
  font-size: 12px;
  color: var(--hc-gray);
}

.helpchain-content {
  background: #FAFAFA;
  border-radius: var(--hc-radius-sm);
  padding: 14px;
  font-size: 13px;
  line-height: 1.6;
  word-break: break-all;
  position: relative;
  margin-bottom: 12px;
}

.helpchain-copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 5px 12px;
  background: var(--hc-primary);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.helpchain-copy-btn:hover {
  background: #E55A2B;
}

.helpchain-copy-btn.copied {
  background: var(--hc-success);
}

.helpchain-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid #F0F0F0;
}

.helpchain-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}

.helpchain-status.valid {
  color: var(--hc-success);
}

.helpchain-status.expiring {
  color: var(--hc-warning);
}

.helpchain-status.expired {
  color: var(--hc-danger);
}

.helpchain-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.helpchain-report-count {
  font-size: 12px;
  color: var(--hc-light-gray);
  margin-top: 4px;
}

.helpchain-actions {
  display: flex;
  gap: 8px;
}

.helpchain-action-btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: none;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.helpchain-action-btn.confirm {
  background: #E8F8F5;
  color: var(--hc-success);
}

.helpchain-action-btn.confirm:hover {
  background: #D4F0E9;
}

.helpchain-action-btn.report {
  background: #FFF0F0;
  color: var(--hc-danger);
}

.helpchain-action-btn.report:hover {
  background: #FFE8E8;
}

/* 我的控制按钮 */
.helpchain-my-controls {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.helpchain-my-btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: 2px solid #E8E8E8;
  background: white;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.helpchain-my-btn:hover {
  border-color: var(--hc-primary);
  color: var(--hc-primary);
}

.helpchain-my-btn.active {
  background: var(--hc-primary);
  border-color: var(--hc-primary);
  color: white;
}

/* 加载状态 */
.helpchain-loading {
  text-align: center;
  padding: 40px;
  color: var(--hc-gray);
}

.helpchain-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid #E8E8E8;
  border-top-color: var(--hc-primary);
  border-radius: 50%;
  animation: hc-spin 0.8s linear infinite;
  margin: 0 auto 12px;
}

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

/* Toast */
.helpchain-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--hc-dark);
  color: white;
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 14px;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 9999;
}

.helpchain-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.helpchain-toast.success {
  background: var(--hc-success);
}

.helpchain-toast.error {
  background: var(--hc-danger);
}

/* 登录提示 */
.helpchain-login-required {
  text-align: center;
  padding: 40px;
  background: var(--hc-card-bg);
  border-radius: var(--hc-radius);
  box-shadow: var(--hc-shadow);
}

.helpchain-login-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: #07C160;
  color: white;
  border: none;
  border-radius: var(--hc-radius-sm);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 16px;
}

.helpchain-login-btn:hover {
  background: #06AD56;
  transform: translateY(-2px);
}

/* 侧边栏用户面板 */
.helpchain-user-panel {
  position: fixed;
  top: 0;
  right: -360px;
  width: 360px;
  height: 100%;
  background: var(--hc-card-bg);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: right 0.3s ease;
  overflow-y: auto;
}

.helpchain-user-panel.open {
  right: 0;
}

.helpchain-panel-header {
  padding: 20px;
  border-bottom: 1px solid #F0F0F0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.helpchain-panel-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: #F5F5F5;
  font-size: 18px;
  cursor: pointer;
}

.helpchain-panel-content {
  padding: 20px;
}

/* 遮罩 */
.helpchain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.helpchain-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* 分页 */
.helpchain-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.helpchain-page-btn {
  padding: 8px 16px;
  border: 1px solid #E8E8E8;
  background: white;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.helpchain-page-btn:hover {
  border-color: var(--hc-primary);
  color: var(--hc-primary);
}

.helpchain-page-btn.active {
  background: var(--hc-primary);
  border-color: var(--hc-primary);
  color: white;
}