/* ===== Asset Picker Modal (资产选择弹窗) =====
 * 共享组件：用于 image.html / video.html 上传时选择已有资产
 * iOS 风格：毛玻璃背景、圆角弹窗、网格布局
 */

/* Overlay */
.asset-picker-overlay {
    position: fixed;
    inset: 0;
    z-index: 300;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    animation: assetPickerFadeIn 0.2s ease-out;
}

@keyframes assetPickerFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Modal Container */
.asset-picker-modal {
    width: 100%;
    max-width: 680px;
    max-height: 80vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-radius: 20px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.18),
        0 4px 16px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: assetPickerSlideUp 0.25s ease-out;
}

@keyframes assetPickerSlideUp {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.97);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Header */
.asset-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px 14px;
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.06);
}

.asset-picker-title {
    font-size: 17px;
    font-weight: 700;
    color: #1c1c1e;
    letter-spacing: -0.3px;
}

.asset-picker-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.05);
    color: #8e8e93;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    font-size: 18px;
    line-height: 1;
}

.asset-picker-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #1c1c1e;
}

/* Tabs */
.asset-picker-tabs {
    display: flex;
    padding: 12px 22px 0;
    gap: 0;
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.06);
}

.asset-picker-tab {
    padding: 10px 20px 12px;
    font-size: 14px;
    font-weight: 500;
    color: #8e8e93;
    cursor: pointer;
    border: none;
    background: none;
    position: relative;
    transition: color 0.15s;
    font-family: inherit;
}

.asset-picker-tab:hover {
    color: #3c3c43;
}

.asset-picker-tab.active {
    color: #007aff;
    font-weight: 600;
}

.asset-picker-tab.active::after {
    content: '';
    position: absolute;
    bottom: -0.5px;
    left: 20px;
    right: 20px;
    height: 2.5px;
    background: #007aff;
    border-radius: 2px 2px 0 0;
}

/* Counter */
.asset-picker-counter {
    padding: 10px 22px;
    font-size: 12px;
    color: #8e8e93;
    text-align: right;
    flex-shrink: 0;
}

.asset-picker-counter .count {
    color: #007aff;
    font-weight: 600;
}

/* Body */
.asset-picker-body {
    flex: 1;
    overflow-y: auto;
    padding: 4px 16px 16px;
}

.asset-picker-body::-webkit-scrollbar {
    width: 4px;
}

.asset-picker-body::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

/* Upload Drop Zone */
.asset-picker-upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 36px 24px;
    margin: 12px 6px;
    border: 2px dashed rgba(0, 122, 255, 0.25);
    border-radius: 16px;
    background: rgba(0, 122, 255, 0.03);
    cursor: pointer;
    transition: all 0.2s;
    gap: 10px;
}

.asset-picker-upload-zone:hover {
    border-color: rgba(0, 122, 255, 0.5);
    background: rgba(0, 122, 255, 0.06);
}

.asset-picker-upload-zone.dragging {
    border-color: #007aff;
    background: rgba(0, 122, 255, 0.1);
}

.asset-picker-upload-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(0, 122, 255, 0.08);
    color: #007aff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.asset-picker-upload-icon svg {
    width: 24px;
    height: 24px;
}

.asset-picker-upload-text {
    font-size: 14px;
    font-weight: 600;
    color: #007aff;
}

.asset-picker-upload-hint {
    font-size: 12px;
    color: #8e8e93;
}

/* Date Group */
.asset-group-title {
    font-size: 13px;
    font-weight: 600;
    color: #8e8e93;
    padding: 14px 6px 8px;
    letter-spacing: 0.2px;
}

/* Image Grid */
.asset-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    padding: 0 6px;
}

.asset-grid-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    border: 2.5px solid transparent;
    transition: all 0.15s;
    background: #f2f2f7;
}

.asset-grid-item:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.asset-grid-item.selected {
    border-color: #007aff;
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
}

.asset-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Selected indicator check */
.asset-grid-item .asset-check {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #007aff;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.7);
    transition: all 0.15s;
}

.asset-grid-item.selected .asset-check {
    opacity: 1;
    transform: scale(1);
}

.asset-grid-item .asset-check svg {
    width: 14px;
    height: 14px;
}

/* Footer */
.asset-picker-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 14px 22px 18px;
    border-top: 0.5px solid rgba(0, 0, 0, 0.06);
    gap: 12px;
}

.asset-picker-btn {
    padding: 10px 28px;
    border-radius: 12px;
    border: none;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
}

.asset-picker-btn.cancel {
    background: rgba(0, 0, 0, 0.04);
    color: #3c3c43;
}

.asset-picker-btn.cancel:hover {
    background: rgba(0, 0, 0, 0.08);
}

.asset-picker-btn.confirm {
    background: #007aff;
    color: white;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

.asset-picker-btn.confirm:hover {
    background: #0066e0;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.4);
}

.asset-picker-btn.confirm:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Empty state */
.asset-picker-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    gap: 12px;
    color: #c7c7cc;
}

.asset-picker-empty svg {
    width: 48px;
    height: 48px;
}

.asset-picker-empty span {
    font-size: 14px;
    color: #8e8e93;
}

/* Loading */
.asset-picker-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.asset-picker-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid rgba(0, 122, 255, 0.15);
    border-top-color: #007aff;
    border-radius: 50%;
    animation: assetPickerSpin 0.7s linear infinite;
}

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

/* Responsive */
@media (max-width: 600px) {
    .asset-picker-modal {
        max-width: 100%;
        max-height: 90vh;
        border-radius: 16px 16px 0 0;
    }

    .asset-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}