.tool-fullwidth {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

/* Tool shell */
.query-tool {
    max-width: 100%;
    margin: 0 auto;
}

.query-tool.editor-section,
.editor-section.query-tool {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.query-tool .card:not(.result-card) {
    border: 1px solid var(--color-border, #e5e7eb);
    box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.06));
    border-radius: var(--radius, 12px);
    background: var(--color-surface, #fff);
}

.query-tool .card-body {
    padding: 1.25rem 1.35rem;
}

.query-tool .card-title {
    color: var(--color-text, #1f2937);
    font-weight: 700;
    font-size: 1.05rem;
}

.query-tool .form-control,
.query-tool .form-select,
.query-tool .select-input,
.query-tool textarea {
    border-radius: 8px;
    border: 1px solid var(--color-border, #e5e7eb);
}

.query-tool .form-control:focus,
.query-tool .form-select:focus,
.query-tool textarea:focus {
    border-color: var(--color-primary, #0d9488);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.query-tool .btn-primary {
    background: var(--color-primary, #0d9488);
    border-color: var(--color-primary, #0d9488);
}

.query-tool .btn-primary:hover {
    background: var(--color-primary-hover, #0f766e);
    border-color: var(--color-primary-hover, #0f766e);
}

.query-tool .alert {
    border-radius: 10px;
}

[data-theme="dark"] .query-tool .card:not(.result-card) {
    background: var(--color-surface, #1f2937);
    border-color: var(--color-border, #374151);
}

[data-theme="dark"] .query-tool .card-title,
[data-theme="dark"] .query-tool .form-label,
[data-theme="dark"] .query-tool {
    color: var(--color-text, #f9fafb);
}

[data-theme="dark"] .query-tool .text-muted,
[data-theme="dark"] .query-tool .form-text {
    color: var(--color-text-secondary, #9ca3af) !important;
}

[data-theme="dark"] .query-tool .form-control,
[data-theme="dark"] .query-tool .form-select,
[data-theme="dark"] .query-tool textarea {
    background: #111827;
    color: var(--color-text, #f9fafb);
    border-color: var(--color-border, #374151);
}

/* --- tool: cidr-calculator --- */
/* CIDR计算器样式 */
.ip-calculator {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.ip-calculator .card {
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.ip-calculator .card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.ip-calculator .card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px 12px 0 0 !important;
    border: none;
}

.ip-calculator .card-header h5,
.ip-calculator .card-header h6 {
    margin: 0;
    font-weight: 600;
}

.ip-calculator .form-label {
    color: #495057;
    font-weight: 600;
    margin-bottom: 8px;
}

.ip-calculator .form-control {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.ip-calculator .form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.ip-calculator .btn {
    border-radius: 8px;
    padding: 12px 24px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
}

.ip-calculator .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.ip-calculator .btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.ip-calculator .btn-outline-primary {
    border: 2px solid #667eea;
    color: #667eea;
}

.ip-calculator .btn-outline-primary:hover {
    background: #667eea;
    border-color: #667eea;
    transform: translateY(-2px);
}

.ip-calculator .btn-outline-secondary {
    border: 2px solid #6c757d;
    color: #6c757d;
}

.ip-calculator .btn-outline-secondary:hover {
    background: #6c757d;
    border-color: #6c757d;
    transform: translateY(-2px);
}

.ip-calculator .btn-outline-success {
    border: 2px solid #28a745;
    color: #28a745;
}

.ip-calculator .btn-outline-success:hover {
    background: #28a745;
    border-color: #28a745;
    transform: translateY(-2px);
}

/* IP信息网格 */
.ip-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.ip-info-item {
    background: #f8f9fa;
    padding: 16px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    transition: all 0.3s ease;
}

.ip-info-item:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.ip-info-label {
    font-size: 12px;
    color: #6c757d;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.ip-info-value {
    font-size: 16px;
    color: #495057;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    word-break: break-all;
}

/* 子网掩码可视化 */
.subnet-mask-visual {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-top: 10px;
}

.mask-bit {
    display: inline-block;
    width: 20px;
    height: 20px;
    margin: 2px;
    border-radius: 4px;
    text-align: center;
    line-height: 20px;
    font-size: 10px;
    font-weight: bold;
    color: white;
}

.mask-bit.network {
    background: #dc3545;
}

.mask-bit.host {
    background: #28a745;
}

/* 二进制显示 */
.binary-display {
    background: #2d3748;
    color: #68d391;
    padding: 12px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    line-height: 1.4;
    word-break: break-all;
    margin-top: 8px;
}

/* 表格样式 */
.table {
    border-radius: 8px;
    overflow: hidden;
}

.table thead th {
    background: #667eea;
    color: white;
    border: none;
    font-weight: 600;
    padding: 12px;
}

.table tbody td {
    padding: 12px;
    border-color: #e9ecef;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(102, 126, 234, 0.05);
}

/* 结果卡片动画 */
.result-card {
    animation: slideInUp 0.5s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .ip-calculator {
        padding: 10px;
    }
    
    .ip-info-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .ip-info-item {
        padding: 12px;
    }
    
    .ip-info-value {
        font-size: 14px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 成功/错误状态 */
.is-valid {
    border-color: #28a745 !important;
}

.is-invalid {
    border-color: #dc3545 !important;
}

.alert {
    border-radius: 8px;
    border: none;
    padding: 16px;
    margin-bottom: 20px;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
}

/* 特殊效果 */
.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}