/* 自定义样式 */

/* 平滑过渡动画 */
* {
    transition: all 0.3s ease;
}

/* 拖拽区域样式 */
#dropZone {
    position: relative;
    overflow: hidden;
}

#dropZone.drag-over {
    border-color: #3b82f6;
    background-color: #eff6ff;
    transform: scale(1.02);
}

#dropZone.drag-over::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.1) 25%, transparent 25%),
                linear-gradient(-45deg, rgba(59, 130, 246, 0.1) 25%, transparent 25%),
                linear-gradient(45deg, transparent 75%, rgba(59, 130, 246, 0.1) 75%),
                linear-gradient(-45deg, transparent 75%, rgba(59, 130, 246, 0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    animation: move 2s linear infinite;
}

@keyframes move {
    0% { background-position: 0 0, 0 10px, 10px -10px, -10px 0px; }
    100% { background-position: 20px 20px, 20px 30px, 30px 10px, 10px 20px; }
}

/* 图片卡片样式 */
.image-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.image-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: #3b82f6;
}

.image-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

/* 图片加载成功状态 */
.image-card img.loaded {
    opacity: 1;
    transform: scale(1);
}

/* 图片加载失败状态 */
.image-card img.error {
    opacity: 0.6;
    filter: grayscale(100%);
    background-color: #f3f4f6;
}

/* 图片加载状态 */
.image-card img:not(.loaded):not(.error) {
    opacity: 0.7;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.image-card:hover img {
    transform: scale(1.05);
}

.image-info {
    padding: 12px;
    border-top: 1px solid #f3f4f6;
}

.image-filename {
    font-weight: 500;
    color: #374151;
    margin-bottom: 4px;
    word-break: break-all;
    font-size: 14px;
}

.image-details {
    font-size: 12px;
    color: #6b7280;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 加载动画 */
.loading-spinner {
    border: 3px solid #f3f4f6;
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 进度条动画 */
#progressBar {
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    position: relative;
    overflow: hidden;
}

#progressBar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 按钮悬停效果 */
button {
    position: relative;
    overflow: hidden;
}

button:not(:disabled):hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

button:not(:disabled):active {
    transform: translateY(0);
}

/* 脉冲动画用于加载状态 */
.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 淡入动画 */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 成功状态颜色 */
.success {
    background-color: #dcfce7 !important;
    border-color: #16a34a !important;
    color: #15803d !important;
}

/* 错误状态样式 */
.error-shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* 响应式调整 */
@media (max-width: 640px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    
    #imageGrid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .image-card img {
        height: 160px;
    }
}

@media (min-width: 1536px) {
    #imageGrid {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}