@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;600&display=swap');

/* 基本样式 */
body {
    background: linear-gradient(45deg, #e5ebe4, #eef3f3);
    font-family: 'Poppins', 'Noto Sans SC', sans-serif; /* 添加 Noto Sans SC 作为中文后备 */
    color: #333;
    margin: 0;
    padding: 20px;
    min-height: 100vh;
    box-sizing: border-box;
    display: flex;
    flex-direction: column; /* 让 footer 能在底部 */
    justify-content: flex-start; /* 从顶部开始 */
    align-items: center;
}

h1 {
    color: #4a5a49;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.2);
    text-align: center; /* 居中标题 */
    margin-bottom: 30px;
    font-weight: 600;
    width: 100%; /* 确保标题宽度足够居中 */
}

.container {
    background: linear-gradient(135deg, #dde8db, #d4e0df);
    background-color: rgba(255, 255, 255, 0.7);
    padding: 30px 40px 40px 40px;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 800px; /* 调整最大宽度 */
    position: relative;
    margin-top: 20px; /* 顶部间距 */
}

.links {
    margin-bottom: 30px;
    padding: 10px 0; /* 上下增加 padding 给动画留空间 */
    min-height: 50px; /* 防止空列表时塌陷 */
    position: relative;
}

.loading-placeholder {
    /* Style defined inline in HTML for initial display */
}

/* 链接项样式 */
.link-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(145deg, #f0f7f0, #e6eded);
    border-radius: 15px;
    box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.1), -4px -4px 10px rgba(255, 255, 255, 0.6);
    padding: 15px 20px; /* 内边距 */
    margin-bottom: 15px; /* 项之间的垂直间距 */
    /* Calculate approximate height: padding(15+15) + line-height(~25) = 55px */
    transition: box-shadow 0.3s ease, transform 0.2s ease, opacity 0.2s ease; /* Add opacity transition */
    /* cursor: grab; */ /* REMOVED */
    user-select: none; /* 防止拖拽时选中文本 */
    position: relative;
    box-sizing: border-box;
}

/* Removed :active cursor style */

/* Style for the item being dragged */
.link-item.dragging {
    opacity: 0.4; /* Make dragged item semi-transparent */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    cursor: default !important; /* Force default arrow cursor */
    /* visibility: hidden; */ /* Optional: If you hide original */
}


.link-item p {
    font-size: 1.1rem; /* 调整字体大小 */
    line-height: 1.4; /* 估算行高 */
    color: #333;
    margin: 0;
    flex-grow: 1;
    margin-right: 15px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    pointer-events: none; /* 防止 P 元素干扰拖拽事件 */
}

/* 按钮组和按钮样式 */
.action-buttons {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

.action-buttons button {
    font-size: 0.85rem; /* 按钮字体稍小 */
    padding: 7px 14px; /* 按钮内边距 */
    border: none;
    border-radius: 8px;
    cursor: pointer; /* Keep pointer on buttons */
    transition: all 0.2s ease;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
    font-weight: 600;
    color: white; /* 统一文字颜色 */
}

.action-buttons button.update-button {
    background: linear-gradient(145deg, #5cb85c, #4cae4c);
}
.action-buttons button.update-button:hover {
    background: linear-gradient(145deg, #4cae4c, #5cb85c);
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.2);
    transform: scale(1.05);
}

.action-buttons button.delete-button {
    background: linear-gradient(145deg, #d9534f, #c9302c);
}
.action-buttons button.delete-button:hover {
    background: linear-gradient(145deg, #c9302c, #d9534f);
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.2);
    transform: scale(1.05);
}

/* 添加区域样式 */
.add-section {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap; /* 响应式换行 */
    align-items: center; /* 垂直居中对齐 */
}

input[type="text"] {
    padding: 12px 15px;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 10px;
    background: #f8f9fa;
    color: #333;
    outline: none;
    transition: all 0.3s ease;
    flex-grow: 1; /* 占据可用空间 */
    min-width: 180px; /* 最小宽度 */
}

input[type="text"]:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

button.add-button {
    font-size: 1rem;
    padding: 12px 25px;
    background: linear-gradient(145deg, #007bff, #0056b3);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer; /* Keep pointer on add button */
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
    font-weight: 600;
    flex-shrink: 0; /* 防止按钮被压缩 */
}

button.add-button:hover {
    transform: scale(1.05);
    background: linear-gradient(145deg, #0056b3, #007bff);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 20px 10px;
    font-size: 0.9rem;
    color: #888;
    width: 100%;
    margin-top: auto; /* 将页脚推到底部 */
}

/* 拖拽占位符样式 */
.drag-placeholder {
    /* Match .link-item's vertical space: height(55px) + margin-bottom(15px) = 70px total */
    height: 55px; /* Estimated height based on padding and typical line height */
    margin-bottom: 15px; /* Match .link-item margin-bottom */
    background-color: rgba(0, 123, 255, 0.1);
    border: 2px dashed #007bff;
    border-radius: 15px; /* Match .link-item border-radius */
    box-sizing: border-box; /* Border included in height */
    transition: none; /* Placeholder should appear/disappear instantly */
}

/* Removed .make-space-above and .make-space-below */