/* --- Mobile Responsiveness --- */

/* Tablet */
@media (max-width: 1024px) {
    .top-bar {
        padding: 0 1.25rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .section {
        padding: 4rem 1.5rem;
    }

    .ss-grid,
    .footer-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 1.5rem;
    }

    .footer {
        padding: 3rem 1.5rem;
    }
}

/* Mobile */
@media (max-width: 768px) {

    /* Layout */
    .app-body {
        flex-direction: column;
    }

    .app-sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .app-sidebar.collapsed {
        width: 100%;
        height: 60px;
        overflow: hidden;
    }

    .workspace-container {
        flex-direction: column;
        padding: 0.5rem;
        margin-top: 64px;
    }

    .chat-panel {
        width: 100%;
        height: 40vh;
    }

    .visualizer-panel {
        height: 50vh;
    }

    /* Navigation */
    .nav-links {
        display: none;
    }

    .top-bar {
        padding: 0.75rem 1rem;
        height: auto;
        flex-wrap: wrap;
        row-gap: 0.5rem;
    }

    .nav-actions {
        gap: 0.5rem;
    }

    .mobile-nav-toggle {
        display: inline-flex;
    }

    .mobile-nav-dropdown {
        display: flex;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-6px);
        max-height: 0;
        overflow: hidden;
        transition: opacity 0.2s ease, transform 0.2s ease, max-height 0.25s ease;
    }

    .mobile-nav-toggle.is-open .hamburger span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    .mobile-nav-toggle.is-open .hamburger span:nth-child(2) {
        opacity: 0;
    }

    .mobile-nav-toggle.is-open .hamburger span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    body.mobile-nav-open .mobile-nav-dropdown {
        display: flex;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        max-height: 260px;
    }

    .logo-area {
        gap: 0.5rem;
    }

    /* Landing Page */
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-input-wrapper {
        flex-direction: column;
    }

    .hero-btn {
        width: 100%;
        margin-top: 0.5rem;
    }

    .section {
        padding: 3rem 1.25rem;
    }

    .ss-grid,
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }

    .footer {
        padding: 3rem 1.25rem;
    }
}

@media (max-width: 540px) {
    .top-bar {
        height: 56px;
        padding: 0 0.75rem;
    }

    .nav-actions .btn,
    .nav-actions .icon-btn {
        padding: 0.35rem 0.6rem;
    }

    .logo-icon {
        width: 28px;
        height: 28px;
    }
}