/* ============================================
   Concert Sound Systems - Responsive Styles
   ============================================ */

/* --- Tablet & Below (1024px) --- */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero h1 {
        font-size: 2.75rem;
    }

    .service-hero h1 {
        font-size: 2.5rem;
    }

    .nav-cta {
        display: none;
    }
}

/* --- Mobile Navigation (768px) --- */
@media (max-width: 768px) {
    :root {
        --nav-height: 90px;
    }

    .logo img {
        height: 75px;
        width: 75px;
        padding: 5px 0;
    }

    .nav-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        height: -webkit-fill-available;
        height: 100dvh;
        background-color: var(--color-bg-dark);
        padding: calc(var(--nav-height) + var(--space-md)) var(--space-md) var(--space-md);
        transition: right var(--transition-normal);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        z-index: 999;
    }

    .main-nav.open {
        right: 0;
    }

    .main-nav .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .main-nav .nav-list > li {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .main-nav .nav-list > li > a {
        display: block;
        padding: 1rem 0;
        font-size: 1.0625rem;
    }

    .nav-cta {
        display: list-item;
    }

    .main-nav .btn-nav {
        margin-left: 0;
        margin-top: var(--space-sm);
        display: block;
        text-align: center;
        padding: 0.875rem 1.25rem;
    }

    /* Mobile dropdown */
    .has-dropdown .dropdown {
        position: static;
        transform: none;
        background: transparent;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        padding: 0;
        display: none;
        min-width: 0;
    }

    .has-dropdown.open .dropdown {
        display: block;
    }

    .dropdown li a {
        color: rgba(255, 255, 255, 0.7);
        padding: 0.625rem 1.25rem;
    }

    .dropdown li a:hover {
        background-color: rgba(255, 255, 255, 0.05);
        color: var(--color-white);
    }

    /* Mobile overlay */
    .nav-overlay {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* Layout adjustments */
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }

    .section {
        padding: var(--space-lg) 0;
    }

    .hero {
        min-height: 450px;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero .hero-services {
        font-size: 1rem;
        letter-spacing: 0.1em;
    }

    .hero-video {
        display: none;
    }

    .service-hero {
        min-height: 350px;
    }

    .service-hero h1 {
        font-size: 2rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .checkbox-group {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 1.5rem;
        padding: 0.75rem;
    }

    .lightbox-close {
        font-size: 2rem;
    }

    .video-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Small Mobile (480px) --- */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }

    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }

    .hero {
        min-height: 400px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero .hero-services {
        font-size: 0.875rem;
        letter-spacing: 0.08em;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: 1fr 1fr;
    }

    .checkbox-group {
        grid-template-columns: 1fr 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
    }

    .btn-large {
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    .gallery-preview {
        grid-template-columns: 1fr;
    }
}