/* ===== 主内容区容器 ===== */
.main-content {
    padding: 0 28px 32px;
}

/* ===== 统计卡片 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 24px 0;
}

.stat-card {
    position: relative;
    padding: 22px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-deco {
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-bg) 0%, transparent 70%);
    opacity: 0.6;
    transform: translate(40px, -40px);
    pointer-events: none;
}

.card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon svg {
    width: 22px;
    height: 22px;
}

.card-icon.devices {
    background: var(--primary-bg);
    color: var(--primary);
}

.card-icon.online {
    background: var(--success-bg);
    color: var(--success);
}

.card-icon.fault {
    background: var(--danger-bg);
    color: var(--danger);
}

.card-trend {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 20px;
}

.card-trend svg {
    width: 14px;
    height: 14px;
}

.card-trend.up {
    color: var(--success);
    background: var(--success-bg);
}

.card-trend.down {
    color: var(--danger);
    background: var(--danger-bg);
}

.stat-card .value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.1;
}

.stat-card .label {
    margin-top: 4px;
    font-size: 13px;
    color: var(--text-sub);
}

.card-compare {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--border);
    font-size: 12px;
    color: var(--text-muted);
}

.card-compare strong {
    color: var(--text-main);
    font-weight: 600;
}

/* ===== 设备列表区块 ===== */
.device-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.section-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
}

.add-device-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.add-device-btn:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.add-device-btn svg {
    width: 16px;
    height: 16px;
}

/* ===== 筛选栏 ===== */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    background: #fafbfc;
}

.filter-item {
    position: relative;
    display: flex;
    align-items: center;
}

.filter-item svg {
    position: absolute;
    left: 12px;
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    pointer-events: none;
}

.filter-item svg ~ input,
.filter-item svg ~ select {
    padding-left: 36px;
}

.filter-item input,
.filter-item select {
    height: 38px;
    min-width: 180px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    font-size: 13px;
    color: var(--text-main);
    font-family: inherit;
    transition: var(--transition);
    cursor: pointer;
}

.filter-item input {
    cursor: text;
}

.filter-item input:focus,
.filter-item select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.filter-item input::placeholder {
    color: var(--text-muted);
}

.reset-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-sub);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

.reset-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-bg);
}

.reset-btn svg {
    width: 16px;
    height: 16px;
}

/* ===== 设备表格 ===== */
.device-table {
    width: 100%;
}

.device-table-head {
    display: grid;
    grid-template-columns: 2fr 1.2fr 1.5fr 1fr 1fr 1.2fr 1.2fr;
    gap: 12px;
    padding: 12px 24px;
    background: #fafbfc;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-sub);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.device-row {
    display: grid;
    grid-template-columns: 2fr 1.2fr 1.5fr 1fr 1fr 1.2fr 1.2fr;
    gap: 12px;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.device-row:last-child {
    border-bottom: none;
}

.device-row:hover {
    background: #fafbfc;
}

/* 设备信息列 */
.device-info {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.device-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary-bg), #ddd6fe);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.device-avatar svg {
    width: 20px;
    height: 20px;
}

.device-name-wrap {
    min-width: 0;
}

.device-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.device-model {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.device-code {
    font-size: 13px;
    color: var(--text-sub);
    font-family: "SF Mono", "Consolas", monospace;
}

.device-location {
    font-size: 13px;
    color: var(--text-sub);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 状态徽章 */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.status-badge::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.status-badge.online {
    background: var(--success-bg);
    color: var(--success);
}

.status-badge.offline {
    background: #f3f4f6;
    color: var(--gray);
}

.status-badge.fault {
    background: var(--danger-bg);
    color: var(--danger);
}

.device-usage {
    font-size: 13px;
    color: var(--text-sub);
}

.usage-bar {
    margin-top: 4px;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    overflow: hidden;
}

.usage-bar-fill {
    height: 100%;
    border-radius: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.device-last {
    font-size: 12px;
    color: var(--text-muted);
}

/* 操作按钮 */
.row-actions {
    display: flex;
    gap: 6px;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-card);
    color: var(--text-sub);
    cursor: pointer;
    transition: var(--transition);
}

.action-btn svg {
    width: 15px;
    height: 15px;
}

.action-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-bg);
}

.action-btn.delete:hover {
    color: var(--danger);
    border-color: var(--danger);
    background: var(--danger-bg);
}

/* 空状态 */
.empty-state {
    padding: 60px 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    opacity: 0.4;
}

/* ===== 分页 ===== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

.page-info {
    font-size: 13px;
    color: var(--text-sub);
}

.page-btns {
    display: flex;
    align-items: center;
    gap: 6px;
}

.page-btn {
    height: 34px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-sub);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

.page-btn:hover:not(:disabled) {
    color: var(--primary);
    border-color: var(--primary);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-numbers {
    display: flex;
    align-items: center;
    gap: 4px;
}

.page-num {
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-sub);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.page-num:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.page-num.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ===== 注册设备搜索结果 ===== */
.device-search-result {
    margin-top: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fafbfc;
    min-height: 120px;
}

.search-result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

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

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

.search-result-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.search-result-info .device-avatar {
    width: 32px;
    height: 32px;
}

.search-result-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-main);
}

.search-result-code {
    font-size: 12px;
    color: var(--text-muted);
    font-family: "SF Mono", monospace;
}

.btn-add-pending {
    height: 28px;
    padding: 0 12px;
    border: none;
    border-radius: var(--radius-xs);
    background: var(--primary);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-add-pending:hover {
    background: var(--primary-dark);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}

.search-result-radio {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .device-table-head,
    .device-row {
        grid-template-columns: 1.8fr 1fr 1.3fr 1fr 1fr 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 0 16px 24px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-item input,
    .filter-item select {
        min-width: 0;
        width: 100%;
    }

    .device-table-head {
        display: none;
    }

    .device-row {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 14px 16px;
    }

    .pagination {
        flex-direction: column;
        gap: 12px;
    }
}