/**
 * Liberty Builders - Responsive Styles
 * Mobile-First Approach
 */

/* ===================================
   Tablet Styles (768px and below)
   =================================== */
@media (max-width: 768px) {
    /* Typography */
    html {
        font-size: 15px;
    }

    /* Spacing */
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    /* Header */
    .header-top-content {
        justify-content: center;
        text-align: center;
    }

    .contact-info {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .separator {
        display: none;
    }

    .header-cta {
        width: 100%;
        justify-content: center;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 148px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        max-height: calc(100vh - 148px);
        overflow-y: auto;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
    }

    .nav-menu a {
        display: block;
        padding: var(--spacing-sm) 0;
    }

    .nav-phone {
        margin-top: var(--spacing-sm);
    }

    /* Hero */
    .hero {
        min-height: 500px;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    /* Grids */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

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

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-logo {
        margin: 0 auto var(--spacing-md);
    }

    .social-links {
        justify-content: center;
    }

    .footer-contact li {
        justify-content: center;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-legal {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    /* Cards */
    .card {
        padding: var(--spacing-lg);
    }

    /* Buttons */
    .btn {
        width: 100%;
        max-width: 300px;
    }

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

    /* Back to top */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* ===================================
   Mobile Styles (480px and below)
   =================================== */
@media (max-width: 480px) {
    /* Typography */
    html {
        font-size: 14px;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }

    /* Container padding */
    .container,
    .container-wide {
        padding: 0 var(--spacing-sm);
    }

    /* Header */
    .logo img {
        height: 50px;
    }

    .header-top {
        padding: var(--spacing-xs) 0;
    }

    .header-top-content {
        font-size: 0.75rem;
    }

    .btn-sm {
        padding: 0.4rem 1rem;
        font-size: 0.75rem;
    }

    /* Hero */
    .hero {
        min-height: 400px;
        padding: var(--spacing-xl) 0;
    }

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

    /* Stats */
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-item h3 {
        font-size: 2.5rem;
    }

    /* Portfolio */
    .portfolio-item img {
        height: 250px;
    }

    /* Section headers */
    .section-title::after {
        width: 60px;
    }

    /* Forms */
    .form-control {
        padding: 0.75rem;
        font-size: 0.95rem;
    }

    /* Footer */
    .footer-main {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }

    .social-links a {
        width: 36px;
        height: 36px;
    }
}

/* ===================================
   Large Desktop (1400px and above)
   =================================== */
@media (min-width: 1400px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .header-top,
    .mobile-menu-toggle,
    .back-to-top,
    .footer-cta,
    .cta-section,
    .social-links {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }

    a {
        text-decoration: underline;
    }

    h1, h2, h3 {
        page-break-after: avoid;
    }

    img {
        max-width: 100%;
        page-break-inside: avoid;
    }

    .container {
        max-width: 100%;
    }
}

/* ===================================
   Landscape Mobile (orientation)
   =================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: 350px;
    }

    .nav-menu {
        max-height: calc(100vh - 100px);
    }

    .section {
        padding: var(--spacing-xl) 0;
    }
}

/* ===================================
   Reduced Motion (Accessibility)
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===================================
   Dark Mode Support (Optional)
   =================================== */
@media (prefers-color-scheme: dark) {
    /* Uncomment to add dark mode support
    :root {
        --white: #1a1a1a;
        --text-dark: #e0e0e0;
        --text-gray: #b0b0b0;
        --off-white: #2a2a2a;
        --light-gray: #3a3a3a;
        --border-gray: #4a4a4a;
    }
    */
}

/* ===================================
   Touch Device Optimizations
   =================================== */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices */
    .card:hover {
        transform: none;
    }

    .portfolio-item:hover img {
        transform: none;
    }

    .portfolio-overlay {
        opacity: 1;
        transform: translateY(0);
    }

    /* Larger touch targets */
    .btn {
        min-height: 44px;
        padding: 1rem 2rem;
    }

    a {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }
}

/* ===================================
   High DPI Displays
   =================================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Optimize for retina displays */
    .logo img {
        image-rendering: -webkit-optimize-contrast;
    }
}