/* ============================================
   RESPONSIVE STYLES
   Mobile-first responsive design
   ============================================ */

/* Tablet Devices (768px and up) */
@media (max-width: 1024px) {
    :root {
        --fs-h1: 2.5rem;
        --fs-h2: 1.75rem;
        --fs-h3: 1.25rem;
    }
    
    .hero-image {
        width: 45%;
    }
    
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
}

/* Mobile Devices (768px and down) */
@media (max-width: 768px) {
    :root {
        --fs-h1: 2rem;
        --fs-h2: 1.5rem;
        --fs-h3: 1.125rem;
        --space-xl: 2rem;
        --space-2xl: 3rem;
    }
    
    /* Navigation */
    .hamburger {
        display: block;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        align-items: center;
        padding: var(--space-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link.active::after {
        display: none;
    }
    
    /* Hero */
    .hero {
        text-align: center;
        padding-top: 100px;
    }
    
    .hero-image {
        position: relative;
        width: 100%;
        height: 300px;
        margin-top: var(--space-xl);
        transform: none;
        top: 0;
        right: 0;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* Grids */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    /* Page Header */
    .page-header {
        padding: 6rem 0 3rem;
        margin-top: 60px;
    }
    
    /* WhatsApp Button */
    .whatsapp-float {
        bottom: 20px;
        left: 20px;
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
}

/* Small Mobile Devices (480px and down) */
@media (max-width: 480px) {
    :root {
        --fs-h1: 1.75rem;
        --fs-h2: 1.25rem;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.75rem;
    }
    
    .section {
        padding: var(--space-xl) 0;
    }
}