/* Tablet Styles (768px and below) */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    h1 { font-size: var(--font-size-4xl); }
    h2 { font-size: var(--font-size-3xl); }
    h3 { font-size: var(--font-size-2xl); }
    
    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--background);
        padding: var(--spacing-lg);
        gap: var(--spacing-lg);
        border-bottom: 1px solid var(--border-color);
    }
    
    .navbar-menu.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
    }
    
    .navbar-actions {
        gap: var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-lg {
        width: 100%;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .services-carousel {
        grid-template-columns: 1fr;
    }
    
    .calculator-container {
        grid-template-columns: 1fr;
    }
    
    .calc-tab-content {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        order: 1;
    }
    
    .contact-info {
        order: 2;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .chat-window {
        width: 100%;
        max-width: 300px;
        bottom: 70px;
        right: var(--spacing-md);
    }
}

/* Mobile Styles (480px and below) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    
    .navbar-brand {
        gap: var(--spacing-sm);
    }
    
    .logo {
        height: 32px;
    }
    
    .brand-name {
        font-size: var(--font-size-lg);
    }
    
    .navbar-actions {
        gap: var(--spacing-sm);
    }
    
    .language-selector {
        padding: var(--spacing-sm) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    .btn-lg {
        padding: var(--spacing-lg) var(--spacing-lg);
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
    }
    
    .stat-value {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
    }
    
    .energy-counter {
        grid-template-columns: 1fr;
    }
    
    .counter-item {
        padding: var(--spacing-lg);
    }
    
    .services-carousel {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        padding: var(--spacing-lg);
    }
    
    .calculator-form {
        padding: var(--spacing-lg);
    }
    
    .calculator-results {
        padding: var(--spacing-lg);
    }
    
    .about-values {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-section {
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .chat-toggle {
        width: 50px;
        height: 50px;
    }
    
    .chat-window {
        width: calc(100vw - 2rem);
        max-width: none;
        bottom: 60px;
        right: var(--spacing-md);
        left: var(--spacing-md);
    }
}

/* Large Screens (1200px and above) */
@media (min-width: 1200px) {
    .container {
        padding: 0 var(--spacing-2xl);
    }
    
    .services-carousel {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Print Styles */
@media print {
    .navbar,
    .chat-widget,
    .btn,
    .hero-cta {
        display: none;
    }
    
    body {
        background-color: white;
        color: black;
    }
    
    a {
        text-decoration: underline;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
    }
}

/* High DPI Screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo,
    .about-image img {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* Touch Devices */
@media (hover: none) and (pointer: coarse) {
    .btn:active {
        transform: scale(0.98);
    }
    
    .service-card:active {
        transform: translateY(-5px);
    }
    
    .nav-link::after {
        display: none;
    }
}