/* Layout Styles */
.app-container {
    max-width: 100%;
    margin: 0;
    padding: var(--spacing-sm);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* Ensure background pattern is visible */
    background-color: var(--bg-main);
}

header {
    height: var(--header-height);
    margin-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    background: rgba(21, 25, 37, 0.5);
    /* Glass effect */
    backdrop-filter: blur(10px);
}

main {
    flex: 1;
    display: grid;
    gap: var(--panel-gap);
    grid-template-columns: 280px 1fr 320px;
    /* 3-Column Layout: Sidebar - Viz - Details */
    overflow: hidden;
    padding-bottom: var(--spacing-sm);
}

/* Mobile Re-stack */
@media (max-width: 1024px) {
    main {
        grid-template-columns: 1fr;
        overflow-y: auto;
    }
}

.input-section {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    height: 100%;
    overflow-y: auto;
    color: var(--text-muted);
}

.results-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.hidden {
    display: none !important;
}