/**
 * FLUID LAB 学生管理优化 - optimize3-student-management.css
 * 增强指挥舱的学生管理功能：搜索、筛选、排序、统计
 * 命名空间: fl-sm- 前缀避免冲突
 */

/* ========== 搜索栏 ========== */
.fl-sm-search-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    padding: 12px;
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.08);
    flex-wrap: wrap;
    align-items: center;
}
.fl-sm-search-input {
    flex: 1;
    min-width: 180px;
    padding: 8px 14px;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    color: #fff;
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.fl-sm-search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0,242,255,0.15);
}
.fl-sm-search-input::placeholder {
    color: #666;
}

/* 筛选下拉 */
.fl-sm-filter-select {
    padding: 8px 12px;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    color: #ccc;
    font-size: 12px;
    outline: none;
    cursor: pointer;
    min-width: 120px;
}
.fl-sm-filter-select:focus {
    border-color: var(--primary);
}
.fl-sm-filter-select option {
    background: #1a1a2e;
    color: #ccc;
}

/* ========== 统计卡片 ========== */
.fl-sm-stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
}
.fl-sm-stat-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
    transition: transform 0.2s, border-color 0.2s;
}
.fl-sm-stat-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255,255,255,0.15);
}
.fl-sm-stat-value {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 2px;
}
.fl-sm-stat-label {
    font-size: 11px;
    color: #888;
}
.fl-sm-stat-card.primary .fl-sm-stat-value { color: var(--primary); }
.fl-sm-stat-card.success .fl-sm-stat-value { color: var(--success); }
.fl-sm-stat-card.warning .fl-sm-stat-value { color: #ff9f43; }
.fl-sm-stat-card.danger .fl-sm-stat-value { color: #ff4757; }
.fl-sm-stat-card.info .fl-sm-stat-value { color: #74b9ff; }

/* ========== 快捷标签 ========== */
.fl-sm-quick-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}
.fl-sm-quick-tag {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    cursor: pointer;
    border: 1px solid rgba(255,255,255,0.12);
    background: transparent;
    color: #888;
    transition: all 0.2s;
}
.fl-sm-quick-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.fl-sm-quick-tag.active {
    background: rgba(0,242,255,0.15);
    border-color: var(--primary);
    color: var(--primary);
}

/* ========== 表格增强 ========== */
.fl-sm-table-wrapper .data-table th {
    cursor: pointer;
    user-select: none;
    position: relative;
    padding-right: 20px;
    transition: color 0.2s;
}
.fl-sm-table-wrapper .data-table th:hover {
    color: var(--primary);
}
.fl-sm-table-wrapper .data-table th .fl-sm-th-sort {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 10px;
    color: #555;
    transition: color 0.2s;
}
.fl-sm-table-wrapper .data-table th.sorted .fl-sm-th-sort {
    color: var(--primary);
}

/* 进度条 */
.fl-sm-progress-cell {
    display: flex;
    align-items: center;
    gap: 6px;
}
.fl-sm-progress-bar {
    flex: 1;
    height: 5px;
    background: rgba(255,255,255,0.08);
    border-radius: 3px;
    overflow: hidden;
    min-width: 30px;
}
.fl-sm-progress-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease;
    background: linear-gradient(90deg, var(--primary), var(--success));
}
.fl-sm-progress-text {
    font-size: 10px;
    color: #888;
    min-width: 28px;
    text-align: right;
}

/* 活跃状态指示 */
.fl-sm-status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 4px;
}
.fl-sm-status-dot.active {
    background: var(--success);
    box-shadow: 0 0 6px rgba(0,230,118,0.4);
}
.fl-sm-status-dot.inactive {
    background: #555;
}

/* ========== 详情面板增强 ========== */
.fl-sm-detail-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: rgba(0,242,255,0.05);
    border-radius: 10px;
    margin-bottom: 14px;
}
.fl-sm-detail-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #0984e3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    font-weight: bold;
    flex-shrink: 0;
}
.fl-sm-detail-info { flex: 1; }
.fl-sm-detail-name {
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 2px;
}
.fl-sm-detail-meta {
    font-size: 11px;
    color: #888;
}

/* ========== 空状态 ========== */
.fl-sm-empty-state {
    text-align: center;
    padding: 30px;
    color: #666;
}
.fl-sm-empty-icon {
    font-size: 40px;
    margin-bottom: 8px;
    opacity: 0.5;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .fl-sm-search-bar {
        flex-direction: column;
    }
    .fl-sm-search-input {
        min-width: 100%;
    }
    .fl-sm-stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
    .fl-sm-stat-card .fl-sm-stat-value {
        font-size: 20px;
    }
}

/* ========== prefers-reduced-motion ========== */
@media (prefers-reduced-motion: reduce) {
    .fl-sm-stat-card { transition: none; }
    .fl-sm-progress-fill { transition: none; }
}