/* ==========================================================================
   弹窗与模态框 (Password Modal, Mod Detail, UGC Publish, User Auth)
   ========================================================================== */
    /* ==========================================================================
       核心功能：下载密码验证模态框 (Password Verification Modal)
       ========================================================================== */
    .modal-backdrop {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.82);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      z-index: 2000;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
      opacity: 0;
      visibility: hidden;
      transition: all var(--transition-normal);
    }

    .modal-backdrop.open {
      opacity: 1;
      visibility: visible;
    }

    .auth-modal {
      width: 100%;
      max-width: 540px;
      background: var(--bg-surface);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card), 0 0 50px rgba(0, 0, 0, 0.8);
      transform: scale(0.94) translateY(20px);
      transition: all var(--transition-slow);
    }

    .modal-backdrop.open .auth-modal {
      transform: scale(1) translateY(0);
    }

    .auth-modal-header {
      padding: 20px 24px;
      background: var(--bg-surface-elevated);
      border-bottom: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .auth-title {
      font-size: 1.2rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .auth-close-btn {
      width: 32px;
      height: 32px;
      border-radius: var(--radius-full);
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      color: var(--text-muted);
      transition: all var(--transition-fast);
    }

    .auth-close-btn:hover {
      color: var(--status-red);
      border-color: var(--status-red);
      transform: rotate(90deg);
    }

    .auth-modal-body {
      padding: 28px;
    }

    .target-mod-card {
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 16px;
      margin-bottom: 24px;
      display: flex;
      gap: 14px;
      align-items: center;
    }

    .target-mod-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--gta-gold), var(--gta-gold-hover));
      color: #000;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      flex-shrink: 0;
    }

    .target-mod-info h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 4px;
      color: var(--text-main);
    }

    .target-mod-info p {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-family: var(--font-mono);
    }

    /* 密码输入区域 */
    .password-input-group {
      margin-bottom: 18px;
      position: relative;
    }

    .password-label-row {
      display: flex;
      justify-content: space-between;
      margin-bottom: 8px;
      font-size: 0.875rem;
      font-weight: 600;
    }

    .quick-pwd-hint {
      color: var(--gta-gold);
      cursor: pointer;
      font-weight: 500;
      text-decoration: underline;
    }

    .input-wrapper {
      position: relative;
      display: flex;
      align-items: center;
    }

    .password-field {
      width: 100%;
      padding: 14px 48px 14px 18px;
      background: var(--bg-surface-elevated);
      border: 2px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      font-size: 1rem;
      color: var(--text-main);
      font-family: var(--font-mono);
      letter-spacing: 0.05em;
      transition: all var(--transition-fast);
    }

    .password-field:focus {
      border-color: var(--gta-gold);
      box-shadow: 0 0 16px var(--gta-gold-glow);
    }

    .password-field.error {
      border-color: var(--status-red);
      animation: shake 0.4s ease;
    }

    @keyframes shake {
      0%, 100% { transform: translateX(0); }
      20%, 60% { transform: translateX(-8px); }
      40%, 80% { transform: translateX(8px); }
    }

    .toggle-pwd-btn {
      position: absolute;
      right: 14px;
      color: var(--text-muted);
      font-size: 1.1rem;
    }

    .pwd-error-msg {
      font-size: 0.825rem;
      color: var(--status-red);
      margin-top: 6px;
      display: none;
    }

    .pwd-error-msg.show {
      display: block;
    }

    .auth-submit-btn {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--gta-gold), var(--gta-gold-hover));
      color: #000;
      font-weight: 800;
      font-size: 1rem;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      box-shadow: 0 4px 16px var(--gta-gold-glow);
      transition: all var(--transition-fast);
    }

    .auth-submit-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
    }

    /* 解锁后的真实网盘下载通道 */
    .download-channels {
      display: none;
      flex-direction: column;
      gap: 14px;
      animation: fadeIn 0.4s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .channel-item {
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }

    .channel-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .channel-icon {
      width: 38px;
      height: 38px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 800;
      color: #fff;
    }

    .channel-icon.baidu { background: #2932e1; }
    .channel-icon.cloud123 { background: #00b0ff; }
    .channel-icon.xunlei { background: #0076ff; }
    .channel-icon.github { background: #333; }

    .channel-text h5 {
      font-size: 0.925rem;
      font-weight: 700;
      margin-bottom: 2px;
    }

    .channel-text p {
      font-size: 0.78rem;
      color: var(--text-muted);
      font-family: var(--font-mono);
    }

    .channel-btns {
      display: flex;
      gap: 8px;
    }

    .copy-code-btn {
      padding: 6px 12px;
      background: var(--bg-surface-subtle);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--text-main);
      transition: all var(--transition-fast);
    }

    .copy-code-btn:hover {
      border-color: var(--gta-gold);
      color: var(--gta-gold);
    }

    .channel-go-link {
      padding: 6px 14px;
      background: var(--status-green);
      color: #000;
      border-radius: var(--radius-sm);
      font-size: 0.8rem;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: all var(--transition-fast);
    }

    .channel-go-link:hover {
      transform: scale(1.04);
    }

    /* ==========================================================================
       模组详情与安装指南模态框 (Mod Detail Modal)
       ========================================================================== */
    .detail-modal {
      width: 100%;
      max-width: 820px;
      max-height: 88vh;
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      display: flex;
      flex-direction: column;
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }

    .detail-header {
      padding: 20px 24px;
      background: var(--bg-surface-elevated);
      border-bottom: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .detail-body {
      flex: 1;
      overflow-y: auto;
      padding: 32px;
      line-height: 1.75;
    }

    .detail-title {
      font-size: clamp(1.4rem, 2.5vw, 1.85rem);
      font-weight: 900;
      margin-bottom: 12px;
    }

    .detail-meta-tags {
      display: flex;
      gap: 12px;
      font-size: 0.825rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-subtle);
    }

    .detail-section-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin: 24px 0 12px;
      color: var(--gta-gold);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .detail-body pre {
      background: var(--code-bg);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 16px;
      font-family: var(--font-mono);
      font-size: 0.85rem;
      color: var(--accent-cyan);
      overflow-x: auto;
      margin: 14px 0;
    }

    .detail-footer {
      padding: 16px 24px;
      border-top: 1px solid var(--border-subtle);
      background: var(--bg-surface-elevated);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    /* 登录注册/模组发布弹窗专用样式 */
    .auth-tab-row {
      display: flex;
      border-bottom: 1px solid var(--border-subtle);
      margin-bottom: 20px;
    }
    .auth-tab-btn {
      flex: 1;
      padding: 12px;
      text-align: center;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-muted);
      border-bottom: 2px solid transparent;
      transition: all var(--transition-fast);
      cursor: pointer;
    }
    .auth-tab-btn.active {
      color: var(--gta-gold);
      border-bottom-color: var(--gta-gold);
    }

    .form-group-block {
      margin-bottom: 16px;
    }
    .form-group-block label {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-secondary);
    }
    .req-star {
      color: var(--status-red);
      margin-left: 2px;
    }
    .invite-badge-hint {
      font-size: 0.75rem;
      color: var(--gta-gold);
      font-weight: normal;
    }
    .form-control-input, .form-control-textarea, .form-control-select {
      width: 100%;
      padding: 12px 14px;
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      color: var(--text-main);
      font-size: 0.925rem;
      transition: all var(--transition-fast);
    }
    .form-control-input:focus, .form-control-textarea:focus, .form-control-select:focus {
      border-color: var(--gta-gold);
      box-shadow: 0 0 12px var(--gta-gold-glow);
    }
    .form-control-input.error {
      border-color: var(--status-red);
      animation: shake 0.4s ease;
    }
    .form-err-text {
      color: var(--status-red);
      font-size: 0.8rem;
      margin-top: 4px;
      display: none;
    }
    .form-err-text.show {
      display: block;
    }

    .filter-actions-right {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }