:root {
    --primary-color: #ff2442; /* 小红书红 */
    --bg-color: #ffffff;
    --sidebar-bg: #f8f8f8;
    --text-color: #333333;
    --border-color: #eeeeee;
    --hover-bg: #f0f0f0;
    --shadow: 0 2px 10px rgba(0,0,0,0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* 按钮基础样式 */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-icon {
    background: transparent;
    border: none;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    color: #666;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.btn-icon:hover {
    background: var(--hover-bg);
}

.btn-icon:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

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

.fade-in {
    animation: fadeIn 0.3s ease-out forwards;
}

/* 侧边栏遮罩 */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    z-index: 99;
    backdrop-filter: blur(2px);
}

/* 移动端优化 */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        position: fixed;
        left: -260px; /* 默认隐藏在左侧 */
        top: 0;
        height: 100vh;
        z-index: 100;
        transition: transform 0.3s ease;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    }

    .sidebar.active {
        transform: translateX(260px);
    }

    .sidebar-overlay.active {
        display: block;
    }

    /* 移动端隐藏折叠按钮，因为我们使用侧边栏作为抽屉 */
    #toggle-sidebar {
        display: none !important;
    }

    #show-sidebar {
        display: flex !important;
    }
}

/* 全屏图片预览模态框 */
.image-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    cursor: zoom-out;
    justify-content: center;
    align-items: center;
}

.modal-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    animation: zoomIn 0.3s ease;
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}

@keyframes zoomIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}