/* 现代简洁风格 */
:root {
    --primary: #2d5a27;
    --primary-light: #4a8c42;
    --bg: #fafafa;
    --card: #ffffff;
    --text: #333333;
    --text-secondary: #666666;
    --border: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.main-container {
    display: flex;
    height: 100vh;
    gap: 0;
}

/* 左侧数据面板 */
.data-panel {
    width: 320px;
    background: var(--card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.panel-header h1 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

/* 搜索区域 */
.search-section {
    padding: 12px 20px;
    position: relative;
    border-bottom: 1px solid var(--border);
}

#searchInput {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s;
    background: var(--bg);
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 20px;
    right: 20px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-height: 280px;
    overflow-y: auto;
    display: none;
    z-index: 100;
}

.search-results.show {
    display: block;
}

.search-item {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.search-item:last-child {
    border-bottom: none;
}

.search-item:hover {
    background: var(--bg);
}

.search-item .name {
    font-size: 14px;
    font-weight: 500;
}

.search-item .pinyin {
    color: var(--text-secondary);
    font-size: 12px;
}

/* 当前信息 */
.current-info {
    padding: 16px 20px;
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    color: white;
}

.info-title {
    font-size: 16px;
    font-weight: 600;
}

.info-stats {
    font-size: 13px;
    margin-top: 4px;
    opacity: 0.9;
}

/* 鸟种详情 */
.bird-detail {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.bird-detail .bird-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

.bird-detail .bird-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.bird-detail .total-records {
    display: inline-block;
    margin-top: 12px;
    padding: 6px 12px;
    background: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 13px;
}

/* 省份分布列表 */
.province-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px 20px;
}

.province-list-title {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

.province-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    margin-bottom: 4px;
    background: var(--bg);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.province-item:hover {
    background: #e8f5e8;
    border-color: var(--primary-light);
}

.province-item.active {
    background: #c8e6c9;
    border-color: var(--primary);
}

.province-item .province-name {
    font-size: 14px;
}

.province-item .province-records {
    font-size: 13px;
    color: var(--primary);
    font-weight: 500;
}

/* 空状态提示 */
.empty-tip {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
    font-size: 14px;
}

.empty-tip .icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.3;
}

/* 右侧地图 */
.map-section {
    flex: 1;
    background: var(--card);
    position: relative;
}

#chinaMap {
    width: 100%;
    height: 100%;
}

/* 响应式 */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
    }

    .data-panel {
        width: 100%;
        height: 45vh;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .map-section {
        height: 55vh;
    }
}