.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: port-checker --- */
.port-checker-tool .form-control {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.port-checker-tool .form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.port-checker-tool .btn {
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.port-checker-tool .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.port-item {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

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

.port-item.open {
    border-left: 4px solid #198754;
    background: #d1e7dd;
}

.port-item.closed {
    border-left: 4px solid #dc3545;
    background: #f8d7da;
}

.port-item.checking {
    border-left: 4px solid #0d6efd;
    background: #cfe2ff;
}

.port-status {
    font-size: 0.875rem;
    font-weight: 600;
}

.port-number {
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: #495057;
}

.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #0d6efd;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.result-box {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    padding: 12px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    min-height: 60px;
    word-break: break-all;
}