/* ======= 子网计算器在线工具样式 ======= */
/* 包含基础计算 / VLSM 划分 / 超网合并 / IP 归属检查 / 辅助转换 / 私网地址 等多面板 */

/* 1. 容器与标题 */
/* 覆盖全局 .tool-container 的 900px，本工具含多面板+表格，需要更宽容器 */
.tool-page .tool-container {
    max-width: 1200px;
}

.tool-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--primary-light);
}

.tool-title-wrapper i {
    font-size: 2rem;
    color: var(--primary-color);
}

.tool-title-wrapper .tool-title {
    margin-bottom: 0;
    border-bottom: none;
}

/* 2. 标签切换器 */
.tab-switcher {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
    overflow-x: auto;
}

.tab-btn {
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* 3. 标签面板 */
.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* 4. 输入区 */
.input-section {
    margin-bottom: 20px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.input-group input,
.input-group select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: inherit;
    min-width: 180px;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.config-actions {
    flex-direction: row;
    align-items: flex-end;
    gap: 8px;
    margin-left: auto;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 5. 结果网格（基础计算结果） */
.result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.result-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.result-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.result-value.binary {
    font-size: 12px;
    word-break: break-all;
}

.result-full {
    grid-column: 1 / -1;
}

/* 6. 子网表格（VLSM 结果） */
.subnet-table-wrapper {
    overflow-x: auto;
    margin-top: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.subnet-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.subnet-table th {
    background: var(--bg-light);
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.subnet-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    font-family: 'Consolas', monospace;
}

.subnet-table tbody tr:nth-child(even) {
    background: var(--bg-light);
}

.subnet-table tbody tr:hover {
    background: rgba(13, 110, 253, 0.05);
}

/* 7. 超网结果 */
.supernet-result {
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin-top: 16px;
}

.supernet-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 8px;
}

.supernet-badge.exact {
    background: #d4edda;
    color: #155724;
}

.supernet-badge.inexact {
    background: #fff3cd;
    color: #856404;
}

/* 8. IP 归属检查结果 */
.check-result {
    padding: 20px;
    border-radius: var(--radius-md);
    margin-top: 16px;
    text-align: center;
    font-size: 18px;
    font-weight: 600;
}

.check-result.belong {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.check-result.not-belong {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.check-result i {
    font-size: 24px;
    margin-right: 8px;
}

/* 9. 辅助工具网格 */
.aux-tool-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.aux-tool-card {
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.aux-tool-card h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.aux-tool-card input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    margin-bottom: 8px;
    box-sizing: border-box;
}

.aux-result {
    padding: 8px 12px;
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-family: 'Consolas', monospace;
    font-size: 13px;
    margin-bottom: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.aux-result-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.aux-result-value {
    font-weight: 600;
    color: var(--text-primary);
    word-break: break-all;
}

/* 10. 私网 IP 表格 */
.private-ip-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-top: 8px;
}

.private-ip-table th {
    background: var(--bg-light);
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.private-ip-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    font-family: 'Consolas', monospace;
}

.private-ip-table tbody tr:nth-child(even) {
    background: var(--bg-light);
}

.private-ip-table tbody tr:hover {
    background: rgba(13, 110, 253, 0.05);
}

/* 11. VLSM 输入区 */
.vlsm-input-area {
    margin-bottom: 16px;
}

.vlsm-rows {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.vlsm-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.vlsm-row input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
}

.vlsm-row .btn-remove {
    padding: 8px 12px;
    background: transparent;
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
}

.vlsm-row .btn-remove:hover {
    background: var(--danger-color);
    color: white;
}

/* 12. 错误提示 */
.error-message {
    display: none;
    padding: 12px 16px;
    background: #f8d7da;
    color: #721c24;
    border-radius: var(--radius-md);
    border: 1px solid #f5c6cb;
    font-size: 14px;
    margin-top: 12px;
}

.error-message.show {
    display: block;
}

/* 13. 响应式 */
@media (max-width: 768px) {
    .result-grid {
        grid-template-columns: 1fr;
    }

    .aux-tool-grid {
        grid-template-columns: 1fr;
    }

    .input-section {
        flex-direction: column;
        align-items: stretch;
    }

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

    .tab-switcher {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .subnet-table {
        font-size: 12px;
    }

    .subnet-table th,
    .subnet-table td {
        padding: 6px 8px;
    }
}