.tool-advanced-layout {
    display: grid;
    gap: 2rem;
    grid-template-columns: 1fr;
    margin-top: 2rem;
}
@media (min-width: 1024px) {
    .tool-advanced-layout {
        grid-template-columns: 2fr 1fr;
    }
}
.tool-main-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
}
.tool-sidebar-card {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.tool-sidebar-card h3 {
    margin-top: 0;
    font-size: 1.125rem;
    color: var(--brand-charcoal);
    margin-bottom: 1rem;
}
.tool-input-group {
    margin-bottom: 1.5rem;
}
.tool-input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--brand-charcoal);
}
.tool-textarea, .tool-input {
    width: 100%;
    padding: 1rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s;
}
.tool-textarea:focus, .tool-input:focus {
    outline: none;
    border-color: var(--brand-spark);
    box-shadow: 0 0 0 3px rgba(244, 98, 58, 0.1);
}
.tool-btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.tool-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}
.tool-btn-primary {
    background: var(--brand-spark);
    color: white;
}
.tool-btn-primary:hover { background: #d95632; }
.tool-btn-secondary {
    background: var(--brand-charcoal);
    color: white;
}
.tool-btn-secondary:hover { background: #111827; }
.tool-btn-outline {
    background: transparent;
    border: 1px solid #d1d5db;
    color: var(--brand-charcoal);
}
.tool-btn-outline:hover { background: #f3f4f6; }
.tool-result-box {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1rem;
    font-family: monospace;
    font-size: 0.95rem;
    white-space: pre-wrap;
    word-break: break-all;
    margin-top: 1rem;
    position: relative;
}
.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: white;
    border: 1px solid #d1d5db;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
}
.seo-article {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #e5e7eb;
}
.seo-article h2 { color: var(--brand-charcoal); }
.seo-article p { color: var(--brand-slate); font-size: 1.05rem; line-height: 1.7; }