:root {
    /* 颜色变量 - 苹果设计系统风格 */
    --apple-background: #f5f5f7;
    --apple-card-bg: #ffffff;
    --apple-blue: #0071e3;
    --apple-blue-hover: #0077ed;
    --apple-text: #1d1d1f;
    --apple-text-secondary: #86868b;
    --apple-border: rgba(0, 0, 0, 0.1);
    --apple-shadow: rgba(0, 0, 0, 0.08);
    --apple-success: #34c759;
    --apple-danger: #ff3b30;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'SF Pro Icons', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--apple-background);
    color: var(--apple-text);
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* 头部样式 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header h1 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.03em;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

/* 按钮样式 */
.apple-button {
    border: none;
    border-radius: 980px; /* 苹果风格的圆角按钮 */
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.primary-button {
    background-color: var(--apple-blue);
    color: white;
}

.primary-button:hover {
    background-color: var(--apple-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 5px var(--apple-shadow);
}

.secondary-button {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--apple-text);
}

.secondary-button:hover {
    background-color: rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.danger-button {
    background-color: var(--apple-danger);
    color: white;
}

.danger-button:hover {
    background-color: #ff4f45;
}

.success-button {
    background-color: var(--apple-success);
    color: white;
}

.success-button:hover {
    background-color: #40d369;
}

/* 搜索框样式 */
.search-container {
    position: relative;
    margin-right: 0.5rem;
}

.search-input {
    border: none;
    border-radius: 980px;
    padding: 0.5rem 1rem 0.5rem 2.2rem;
    font-size: 0.9rem;
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--apple-text);
    width: 200px;
    transition: all 0.2s ease;
}

.search-input:focus {
    outline: none;
    background-color: rgba(0, 0, 0, 0.08);
    width: 250px;
}

.search-icon {
    position: absolute;
    left: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--apple-text-secondary);
    font-size: 0.9rem;
}

/* 搜索结果样式 */
.search-results {
    display: none;
    margin-top: 2rem;
    background-color: var(--apple-card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 14px var(--apple-shadow);
}

.search-results h2 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

/* 主要内容区域 */
.main-content {
    width: 100%;
}

.categories-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* 分类卡片样式 */
.category {
    background-color: var(--apple-card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px var(--apple-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.category:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--apple-shadow);
}

.category-header {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--apple-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.links-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
}

/* 链接项样式 */
.link-item {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--apple-text);
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.2s ease;
}

.link-item:hover {
    background-color: rgba(0, 0, 0, 0.03);
}

.link-icon {
    width: 30px;
    height: 30px;
    margin-right: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--apple-blue);
    background-color: rgba(0, 113, 227, 0.1);
    border-radius: 6px;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    overflow-y: auto;
}

.modal-content {
    background-color: var(--apple-card-bg);
    margin: 5% auto;
    width: 90%;
    max-width: 800px;
    border-radius: 12px;
    box-shadow: 0 12px 28px var(--apple-shadow);
    animation: modalFade 0.3s;
}

@keyframes modalFade {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--apple-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.close-btn {
    font-size: 1.8rem;
    font-weight: 300;
    cursor: pointer;
    color: var(--apple-text-secondary);
    transition: color 0.2s ease;
}

.close-btn:hover {
    color: var(--apple-text);
}

.modal-body {
    padding: 1.5rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* 编辑表单样式 */
.category-edit {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border: 1px solid var(--apple-border);
    border-radius: 12px;
    background-color: rgba(0, 0, 0, 0.02);
}

.category-edit-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.category-title-input {
    font-size: 1.1rem;
    font-weight: 500;
    width: 70%;
}

.links-edit-container {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 1rem;
}

.link-edit {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr auto;
    gap: 0.5rem;
    align-items: center;
    padding: 0.8rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 1px 3px var(--apple-shadow);
}

/* 表单输入样式 */
input[type="text"] {
    padding: 0.5rem;
    border: 1px solid var(--apple-border);
    border-radius: 6px;
    font-size: 0.9rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
    }

    .links-container {
        grid-template-columns: 1fr;
    }

    .link-edit {
        grid-template-columns: 1fr;
    }

    .search-input {
        width: 100%;
    }

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