/**
 * 资料片系统样式 - 左中右三列布局
 */

/* 三列布局容器 */
.expansion-three-column {
    display: flex;
    gap: 12px;
    padding: 6px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    /* 减小整体高度，避免大面积空白 */
    min-height: 170px;
    flex-direction: row; /* 强制水平布局 */
}

/* 列样式 */
.expansion-column {
    display: flex;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 6px;
    padding: 6px;
    overflow: hidden;
}

/* 左侧列 - 已打通 */
.expansion-left {
    flex: 0.9;
    border: 2px solid rgba(102, 255, 102, 0.3);
}

/* 中间列 - 当前 */
.expansion-center {
    flex: 1.3;
    border: 2px solid rgba(255, 204, 0, 0.5);
    box-shadow: 0 0 15px rgba(255, 204, 0, 0.3);
}

/* 右侧列 - 下一个 */
.expansion-right {
    flex: 0.9;
    border: 2px solid rgba(102, 102, 255, 0.3);
}

/* 列标题 */
.expansion-column-title {
    font-size: 1.1rem;
    font-weight: bold;
    text-align: center;
    padding: 8px;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: #ffcc00;
}

.expansion-left .expansion-column-title {
    color: #66ff66;
}

.expansion-center .expansion-column-title {
    color: #ffcc00;
    font-size: 1.2rem;
}

.expansion-right .expansion-column-title {
    color: #6666ff;
}

/* VIP 系统 - 左中右三列（复用三列布局） */
.vip-three-column {
    display: flex;
    gap: 18px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    min-height: 200px;
    flex-direction: row;
}
.vip-three-column .vip-column {
    display: flex;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 6px;
    padding: 12px;
    overflow: hidden;
}
.vip-three-column .vip-column-left {
    flex: 0.9;
    border: 2px solid rgba(102, 255, 102, 0.3);
}
.vip-three-column .vip-column-center {
    flex: 1.3;
    border: 2px solid rgba(255, 204, 0, 0.5);
    box-shadow: 0 0 15px rgba(255, 204, 0, 0.3);
}
.vip-three-column .vip-column-right {
    flex: 0.9;
    border: 2px solid rgba(102, 102, 255, 0.3);
}
.vip-three-column .vip-column-title {
    font-size: 1rem;
    font-weight: bold;
    text-align: center;
    padding: 8px;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
.vip-three-column .vip-column-left .vip-column-title { color: #66ff66; }
.vip-three-column .vip-column-center .vip-column-title { color: #ffcc00; font-size: 1.1rem; }
.vip-three-column .vip-column-right .vip-column-title { color: #6666ff; }
.vip-card-desc { font-size: 0.85rem; color: #aaa; margin-top: 8px; line-height: 1.4; }
.vip-card-require { font-size: 0.8rem; color: #888; margin-top: 6px; }
.vip-bonus-line { margin-top: 6px; font-size: 0.9rem; line-height: 1.5; }
.vip-modal-content { max-width: 920px; padding: 18px 22px; }
.vip-three-column .vip-column { min-width: 0; padding: 14px 16px; }
.vip-three-column .vip-column-center { padding: 16px 20px; }

/* 资料片列表 */
.expansion-list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

/* 资料片项 */
.expansion-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    padding: 8px;
    margin-bottom: 6px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    cursor: pointer;
}

.expansion-item-completed {
    opacity: 0.8;
}

.expansion-item-completed:hover {
    background: rgba(102, 255, 102, 0.1);
    border-color: rgba(102, 255, 102, 0.3);
    transform: translateX(5px);
    opacity: 1;
}

.expansion-item-current {
    background: rgba(255, 204, 0, 0.1);
    border: 2px solid rgba(255, 204, 0, 0.3);
    box-shadow: 0 0 10px rgba(255, 204, 0, 0.2);
}

.expansion-item-current:hover {
    background: rgba(255, 204, 0, 0.15);
    border-color: rgba(255, 204, 0, 0.5);
}

.expansion-item-next {
    opacity: 0.7;
}

.expansion-item-prev:hover,
.expansion-item-next:hover {
    background: rgba(255, 204, 0, 0.1);
    border-color: rgba(255, 204, 0, 0.3);
    transform: scale(1.02);
}

.expansion-item-prev,
.expansion-item-next {
    display: flex;
    flex-direction: column;
}

/* 资料片项头部 */
.expansion-item-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

/* 两行标题容器 */
.expansion-item-title-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.expansion-item-name-line1 {
    font-weight: bold;
    font-size: 0.95rem;
}

.expansion-item-name-line2 {
    font-size: 0.85rem;
    color: #ccc;
}

.expansion-item-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.expansion-center .expansion-item-icon {
    font-size: 2rem;
}

.expansion-item-name {
    font-size: 1rem;
    font-weight: bold;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.expansion-center .expansion-item-name {
    font-size: 1.2rem;
}

/* 资料片描述 */
.expansion-item-desc {
    font-size: 0.85rem;
    color: #aaa;
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.expansion-center .expansion-item-desc {
    font-size: 0.9rem;
    -webkit-line-clamp: 3;
    line-clamp: 3;
}

/* 资料片状态 */
.expansion-item-status {
    font-size: 0.9rem;
    color: #66ff66;
    text-align: center;
    padding: 5px;
    background: rgba(102, 255, 102, 0.1);
    border-radius: 4px;
}

.expansion-item-status.locked {
    color: #ff6666;
    background: rgba(255, 102, 102, 0.1);
}

/* 进度条 */
.expansion-item-progress {
    margin-top: 8px;
}

.expansion-progress-bar {
    height: 8px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 5px;
}

.expansion-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ffcc00, #ff9900);
    transition: width 0.3s ease;
}

.expansion-progress-text {
    font-size: 0.85rem;
    color: #aaa;
    text-align: center;
}

/* 空状态 */
.expansion-empty {
    text-align: center;
    color: #666;
    padding: 20px;
    font-size: 0.9rem;
}

/* 占位符（待开放） */
.expansion-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #666;
}

.expansion-placeholder-icon {
    font-size: 3rem;
    margin-bottom: 10px;
    opacity: 0.5;
}

.expansion-placeholder-text {
    font-size: 1rem;
    font-weight: bold;
}

/* 滚动条样式 */
.expansion-list::-webkit-scrollbar {
    width: 6px;
}

.expansion-list::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 3px;
}

.expansion-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.expansion-list::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 导航按钮行 - 在左右卡片底部，仅三角图标（无文字） */
.expansion-nav-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: auto;
    padding-top: 6px;
}

.expansion-nav-row-left {
    justify-content: center;
}

.expansion-nav-row-right {
    justify-content: center;
}

.expansion-nav-icon {
    padding: 6px 10px;
    font-size: 1.1rem;
    line-height: 1;
    border: 1px solid rgba(255, 204, 0, 0.4);
    background: rgba(255, 204, 0, 0.1);
    color: rgba(255, 204, 0, 0.9);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.expansion-nav-icon:hover:not(:disabled) {
    background: rgba(255, 204, 0, 0.25);
    border-color: rgba(255, 204, 0, 0.7);
    color: #ffcc00;
}

.expansion-nav-icon:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* 资料片信息样式 */
.expansion-item-info {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 动画效果 */
@keyframes expansionGlow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(255, 204, 0, 0.2);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 204, 0, 0.4);
    }
}

.expansion-item-current {
    animation: expansionGlow 2s ease-in-out infinite;
}

/* 响应式设计 - 小屏幕时改为上下布局 */
@media (max-width: 1024px) {
    .expansion-three-column {
        flex-direction: column;
        min-height: auto;
    }
    
    .expansion-column {
        flex: 1;
        min-height: 150px;
    }
    
    .expansion-left,
    .expansion-center,
    .expansion-right {
        flex: 1;
    }
}