:root {
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --card-bg: #161b22;
    --border-color: #30363d;
    --primary-color: #58a6ff;
    --hover-bg: #161b22;
    --active-bg: #1f6feb;
    --btn-bg: #238636;
    --btn-hover: #2ea043;
}

:root[data-theme="light"] {
    --bg-color: #f6f8fa;
    --text-color: #24292e;
    --card-bg: #ffffff;
    --border-color: #e1e4e8;
    --primary-color: #0366d6;
    --hover-bg: #f6f8fa;
    --active-bg: #0366d6;
    --btn-bg: #2ea043;
    --btn-hover: #2c974b;
}

/* 基础样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
}

/* 粒子样式 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.particle {
    position: absolute;
    background-color: #8b949e;
    border-radius: 50%;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

header h1 {
    color: var(--primary-color);
    margin: 0;
    font-weight: 600;
}

.search-box {
    display: flex;
    gap: 10px;
}

.search-box input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: none;
    width: 240px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.2s cubic-bezier(0.3, 0, 0.5, 1);
}

.search-box input:focus {
    border-color: #1f6feb;
    box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.3);
}

.add-btn {
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.3, 0, 0.5, 1);
    font-weight: 500;
}

.add-btn:hover {
    background-color: #2ea043;
    transform: scale(1.02);
}

/* 分类导航 */
.categories {
    margin-bottom: 20px;
}

.categories ul {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 15px;
}

.categories li {
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.categories li:hover {
    background-color: var(--hover-bg);
    color: var(--primary-color);
}

.categories li.active {
    background-color: var(--active-bg);
    color: white;
}

/* 网格布局 */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.site-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    text-align: center;
    box-shadow: 0 1px 0 rgba(27, 31, 36, 0.04);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    position: relative;
    color: var(--text-color);
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    will-change: transform, box-shadow;
}

.site-card:nth-child(6n+1) {
    --card-color: #e1f5fe;
    --card-color-light: #b3e5fc;
}

.site-card:nth-child(6n+2) {
    --card-color: #e8f5e9;
    --card-color-light: #c8e6c9;
}

.site-card:nth-child(6n+3) {
    --card-color: #fff8e1;
    --card-color-light: #ffecb3;
}

.site-card:nth-child(6n+4) {
    --card-color: #fce4ec;
    --card-color-light: #f8bbd0;
}

.site-card:nth-child(6n+5) {
    --card-color: #f3e5f5;
    --card-color-light: #e1bee7;
}

.site-card:nth-child(6n+6) {
    --card-color: #e0f7fa;
    --card-color-light: #b2ebf2;
}

.site-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(48, 54, 61, 0.3);
    border-color: var(--primary-color);
    background-color: var(--hover-bg);
}

.site-card.dragging {
    opacity: 0.6;
    transform: scale(0.98);
    box-shadow: 0 0 0 3px #58a6ff;
    transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-card.drag-over {
    border: 2px dashed #58a6ff;
    background-color: rgba(88, 166, 255, 0.15);
    transform: scale(1.02);
    transition: all 0.1s ease-out;
}


white-space: nowrap;
opacity: 0;
pointer-events: none;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
transition: opacity 0.2s ease,
transform 0.2s ease;
min-width: 200px;
text-align: center;
z-index: 10;
transition: all 0.2s cubic-bezier(0.3, 0, 0.5, 1);
box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
z-index: 10;
}

.site-card:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-8px);
}



.site-card h3 {
    margin: 0;
    font-size: 16px;
}

.site-card .description {
    margin-top: 8px;
    font-size: 14px;
    color: #8b949e;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-card:hover .description {
    opacity: 1;
    max-height: 100px;
    transform: translateY(0);
}

.edit-form {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(13, 17, 23, 0.98);
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
}

.edit-form-content {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    width: 80%;
    max-width: 400px;
    padding: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.edit-form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.edit-form-header h3 {
    margin: 0;
    font-size: 16px;
    color: var(--primary-color);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 14px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

.save-btn,
.cancel-btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
}

.save-btn {
    background-color: var(--btn-bg);
    color: white;
    border: none;
}

.save-btn:hover {
    background-color: var(--btn-hover);
}

.cancel-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

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

.site-card .delete-btn,
.categories li .category-delete-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: none;
    border: none;
    color: #888;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.site-card:hover .delete-btn,
.categories li:hover .category-delete-btn {
    opacity: 1;
}

.categories li {
    position: relative;
    padding-right: 25px;
}

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    z-index: 100;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

@media (max-width: 480px) {
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .search-box {
        width: 100%;
    }

    .search-box input {
        width: 100%;
    }

    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}