/* ===================================================================
   PREMIUM MOBILE OPTIMIZATIONS
   Mobile-first design for exceptional mobile experience
   =================================================================== */

/* Mobile-First Base Styles */
@media (max-width: 768px) {
    
    /* Enhanced Mobile Typography */
    :root {
        --mobile-text-xs: 0.7rem;
        --mobile-text-sm: 0.8rem;
        --mobile-text-base: 0.9rem;
        --mobile-text-lg: 1rem;
        --mobile-text-xl: 1.1rem;
        --mobile-text-2xl: 1.3rem;
        --mobile-text-3xl: 1.6rem;
        --mobile-text-4xl: 2rem;
        --mobile-text-5xl: 2.5rem;
        
        /* Mobile Spacing */
        --mobile-space-1: 0.2rem;
        --mobile-space-2: 0.4rem;
        --mobile-space-3: 0.6rem;
        --mobile-space-4: 0.8rem;
        --mobile-space-5: 1rem;
        --mobile-space-6: 1.2rem;
        --mobile-space-8: 1.6rem;
        --mobile-space-10: 2rem;
        --mobile-space-12: 2.4rem;
        --mobile-space-16: 3.2rem;
        --mobile-space-20: 4rem;
    }

    /* Mobile Body Optimization */
    body {
        font-size: var(--mobile-text-base);
        line-height: 1.6;
        -webkit-text-size-adjust: 100%;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    /* Mobile Container */
    .container {
        padding: 0 15px;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }

    /* Mobile Sections */
    section {
        padding: var(--mobile-space-12) 0;
    }

    /* Mobile Section Titles */
    .section-title {
        margin-bottom: var(--mobile-space-10);
        text-align: center;
    }

    .section-title {
        padding: var(--mobile-space-6) 0;
        margin-bottom: var(--mobile-space-16);
    }

    .section-title h2 {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: var(--mobile-space-6);
        letter-spacing: -0.01em;
    }
    
    .section-title h2::before {
        top: -8px;
        left: -15px;
        right: -15px;
        bottom: -8px;
    }
    
    .section-title h2::after {
        width: 90px;
        height: 5px;
        bottom: -10px;
    }

    .section-title p {
        font-size: 1.1rem;
        line-height: 1.5;
        max-width: 90%;
        padding: 0 var(--mobile-space-4);
    }

    /* Enhanced Mobile Navbar */
    .navbar {
        padding: var(--mobile-space-4) 0;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }

    .navbar.scrolled {
        padding: var(--mobile-space-3) 0;
        box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    }

    .navbar-brand img {
        height: 40px;
        max-height: 40px;
    }

    .navbar.scrolled .navbar-brand img {
        height: 35px;
        max-height: 35px;
    }

    /* Premium Mobile Menu */
    .navbar-collapse {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        margin-top: var(--mobile-space-4);
        border-radius: var(--radius-xl);
        padding: var(--mobile-space-6);
        box-shadow: var(--shadow-2xl);
        border: 1px solid var(--gray-200);
        transition: all 0.3s ease;
    }
    
    .navbar-collapse:not(.show) {
        display: none !important;
    }
    
    .navbar-collapse.show {
        display: block !important;
        animation: slideDown 0.3s ease;
    }
    
    @keyframes slideDown {
        0% {
            opacity: 0;
            transform: translateY(-10px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .navbar-nav {
        gap: var(--mobile-space-2);
    }

    .nav-link {
        color: var(--text-primary) !important;
        padding: var(--mobile-space-4) var(--mobile-space-6);
        border-radius: var(--radius-lg);
        font-weight: 600;
        font-size: var(--mobile-text-base);
        transition: var(--transition);
        text-align: center;
        opacity: 1;
    }

    .nav-link:hover,
    .nav-link.active {
        background: var(--gradient-primary);
        color: white !important;
        transform: translateY(-2px);
    }

    .nav-link::after {
        display: none;
    }

    /* Premium Mobile Hero */
    .hero {
        min-height: 100vh;
        padding: 0 var(--mobile-space-4);
        text-align: center;
    }

    .hero-content {
        padding: var(--mobile-space-8) 15px;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }

    .hero h1 {
        font-size: var(--mobile-text-4xl);
        line-height: 1.1;
        margin-bottom: var(--mobile-space-6);
        letter-spacing: -0.5px;
    }

    .hero h1::after {
        width: 60px;
        bottom: -var(--mobile-space-3);
    }

    .hero .lead {
        font-size: var(--mobile-text-lg);
        margin-bottom: var(--mobile-space-8);
        line-height: 1.4;
    }

    /* Mobile Hero Buttons */
    .hero-buttons {
        flex-direction: column;
        gap: var(--mobile-space-3);
        align-items: center;
        justify-content: center;
        width: 100%;
        max-width: 300px;
        margin: var(--mobile-space-6) auto 0 auto;
        padding: 0 15px;
        box-sizing: border-box;
    }

    .hero-buttons .btn {
        width: 200px;
        max-width: 200px;
        padding: var(--mobile-space-3) var(--mobile-space-5);
        font-size: var(--mobile-text-sm);
        border-radius: 10px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.3px;
        min-height: 42px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-sizing: border-box;
        margin: 0;
    }

    /* Mobile Cards */
    .project-card,
    .service-card,
    .material-card {
        margin-bottom: var(--mobile-space-6);
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-lg);
        overflow: hidden;
    }

    /* Premium Mobile Project Cards */
    .premium-project-card {
        margin-bottom: var(--mobile-space-8);
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-lg);
        overflow: hidden;
        background: var(--bg-primary);
        transition: all 0.3s ease;
    }

    .premium-project-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-2xl);
    }

    .project-image,
    .project-placeholder {
        height: 240px;
    }

    .project-card-info {
        padding: var(--mobile-space-6);
        text-align: left;
    }

    .project-title {
        font-size: var(--mobile-text-xl);
        line-height: 1.3;
        margin-bottom: var(--mobile-space-3);
        font-weight: 700;
        color: var(--text-primary);
        text-align: left;
    }

    .project-card-category {
        font-size: var(--mobile-text-xs);
        padding: var(--mobile-space-2) var(--mobile-space-3);
        border-radius: 12px;
        font-weight: 700;
        margin-bottom: var(--mobile-space-3);
    }

    .mobile-description {
        display: block;
        font-size: var(--mobile-text-sm);
        color: var(--text-secondary);
        line-height: 1.5;
        margin-bottom: var(--mobile-space-4);
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        display: -webkit-box;
        text-align: left;
    }

    .project-card-meta {
        margin-bottom: var(--mobile-space-4);
        gap: var(--mobile-space-2);
        text-align: left;
        align-items: flex-start;
        justify-content: flex-start;
    }

    .meta-item {
        font-size: var(--mobile-text-sm);
        color: var(--text-secondary);
        display: flex;
        align-items: center;
        justify-content: flex-start;
        line-height: 1.4;
        text-align: left;
        width: 100%;
    }

    .meta-item i {
        color: var(--primary-color);
        margin-right: var(--mobile-space-3);
        width: 14px;
        min-width: 14px;
        text-align: center;
        flex-shrink: 0;
        font-size: 0.75rem;
    }

    .meta-item span {
        flex: 1;
        display: block;
        text-align: left;
    }

    .project-card-btn {
        padding: var(--mobile-space-4) var(--mobile-space-5);
        font-size: var(--mobile-text-sm);
        border-radius: var(--radius-lg);
        min-height: 44px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .project-status {
        padding: 0.25rem 0.5rem;
        font-size: 0.55rem;
        border-radius: 16px;
        top: var(--mobile-space-3);
        right: var(--mobile-space-3);
        letter-spacing: 0.1px;
        font-weight: 500;
        gap: 0.25rem;
        display: inline-flex;
        align-items: center;
        white-space: nowrap;
    }

    /* Mobile Service Cards */
    .service-card {
        padding: var(--mobile-space-8) var(--mobile-space-6);
        text-align: center;
    }

    .service-icon {
        width: 70px;
        height: 70px;
        margin-bottom: var(--mobile-space-5);
        font-size: var(--mobile-text-xl);
    }

    /* Mobile Material Cards */
    .material-image {
        height: 180px;
        background-color: #f8f9fa;
        border-radius: 8px 8px 0 0;
    }

    .material-image img {
        object-fit: contain;
        padding: 10px;
    }

    .material-info {
        padding: var(--mobile-space-5);
    }

    /* Mobile Buttons */
    .btn {
        padding: var(--mobile-space-3) var(--mobile-space-5);
        font-size: var(--mobile-text-sm);
        border-radius: var(--radius-lg);
        min-height: 44px;
    }

    /* Mobile Footer */
    .footer .container {
        padding-top: var(--mobile-space-12);
        text-align: center;
    }

    .footer h5::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-links li {
        display: flex !important;
        align-items: center !important;
        gap: 0.5rem !important;
        justify-content: flex-start !important;
        margin-bottom: var(--mobile-space-3) !important;
        text-align: left !important;
        flex-wrap: nowrap !important;
    }

    .footer-links i {
        color: rgba(255, 255, 255, 0.9) !important;
        font-size: var(--mobile-text-base) !important;
        min-width: 18px !important;
        max-width: 18px !important;
        width: 18px !important;
        text-align: center !important;
        flex-shrink: 0 !important;
        margin-right: 8px !important;
    }

    .footer-links a,
    .footer-links span {
        flex: 1 !important;
        text-align: left !important;
        font-size: var(--mobile-text-sm) !important;
        line-height: 1.4 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        white-space: normal !important;
    }

    .footer-links a[href^="tel:"],
    .footer-links a[href^="mailto:"] {
        word-break: break-all !important;
        overflow-wrap: anywhere !important;
        white-space: normal !important;
        max-width: calc(100% - 26px) !important;
        padding: var(--mobile-space-2) var(--mobile-space-3) !important;
        border-radius: var(--radius-sm) !important;
        background: rgba(255, 255, 255, 0.05) !important;
        margin: var(--mobile-space-2) 0 !important;
        flex: 1 !important;
        display: inline-block !important;
        text-align: left !important;
    }

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

    /* Mobile Back to Top */
    .back-to-top {
        bottom: var(--mobile-space-5);
        right: var(--mobile-space-5);
        width: 50px;
        height: 50px;
    }

    /* About Features - Mobil optimize */
    .about-feature {
        background: var(--white);
        border-radius: var(--radius-xl);
        padding: var(--mobile-space-6) var(--mobile-space-4);
        box-shadow: var(--shadow-md);
        transition: var(--transition);
        text-align: center;
        position: relative;
        overflow: hidden;
        border: 1px solid var(--gray-200);
        margin-bottom: var(--mobile-space-6);
        height: 100%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .about-feature::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        opacity: 0;
        transition: var(--transition);
        z-index: 1;
    }

    .about-feature:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
        border-color: var(--primary-color);
    }

    .about-feature .icon {
        width: 60px;
        height: 60px;
        border-radius: var(--radius-full);
        background: var(--gradient-primary);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto var(--mobile-space-4) auto;
        position: relative;
        z-index: 1;
        transition: var(--transition);
    }

    .about-feature:hover .icon {
        transform: scale(1.05);
        background: var(--gradient-accent);
        box-shadow: var(--shadow-md);
    }

    .about-feature .icon i {
        font-size: var(--mobile-text-lg);
        color: var(--white);
    }

    .about-feature h4 {
        font-size: var(--mobile-text-lg);
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: var(--mobile-space-3);
        position: relative;
        z-index: 1;
        text-transform: uppercase;
        letter-spacing: 0.3px;
    }

    .about-feature p {
        font-size: var(--mobile-text-sm);
        color: var(--text-secondary);
        line-height: 1.5;
        margin: 0;
        position: relative;
        z-index: 1;
        opacity: 0.9;
    }

    /* About section container fixes */
    .about .container {
        padding: 0 15px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    .about .row {
        margin: 0;
        width: 100%;
    }

    .about .col-md-6 {
        width: 100%;
        max-width: 100%;
        flex: 0 0 100%;
        padding: 0 15px;
        margin-bottom: 1rem;
        box-sizing: border-box;
    }

    /* About section layout adjustments for mobile */
    .about .row.mt-5 {
        margin-top: 1.5rem !important;
    }

    /* Container width fixes */
    .container {
        padding: 0 15px;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }

    /* Grid system fixes */
    .row {
        margin: 0;
        width: 100%;
    }

    .row > * {
        padding: 0 15px;
        box-sizing: border-box;
        width: 100%;
        max-width: 100%;
    }

    /* Hero content width fixes */
    .hero-content {
        padding: var(--mobile-space-8) 15px;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }

    /* Hero buttons container fix */
    .hero-buttons {
        flex-direction: column;
        gap: var(--mobile-space-3);
        align-items: center;
        justify-content: center;
        width: 100%;
        max-width: 300px;
        margin: var(--mobile-space-6) auto 0 auto;
        padding: 0 15px;
        box-sizing: border-box;
    }

    .hero-buttons .btn {
        width: 200px;
        max-width: 200px;
        padding: var(--mobile-space-3) var(--mobile-space-5);
        font-size: var(--mobile-text-sm);
        border-radius: 10px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.3px;
        min-height: 42px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-sizing: border-box;
        margin: 0;
    }
}

/* Touch-Friendly Enhancements */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .nav-link {
        min-height: 44px;
        min-width: 44px;
    }

    .btn:active {
        transform: scale(0.98);
    }
}

/* Small Mobile Devices (320px - 480px) - Enhanced Fixes */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
        max-width: 100%;
        width: 100%;
    }

    .hero h1 {
        font-size: var(--mobile-text-3xl);
        line-height: 1.1;
        margin-bottom: 1rem;
    }

    .hero .lead {
        font-size: var(--mobile-text-base);
        line-height: 1.4;
        margin-bottom: 1.5rem;
    }

    .hero-content {
        padding: 2rem 10px;
        width: 100%;
        max-width: 100%;
    }

    .hero-buttons {
        max-width: 280px;
        padding: 0 10px;
        gap: 0.6rem;
    }

    .hero-buttons .btn {
        width: 180px;
        max-width: 180px;
        padding: 0.6rem 1rem;
        font-size: 0.75rem;
        min-height: 40px;
    }

    .section-title {
        padding: var(--mobile-space-4) 10px;
        margin-bottom: var(--mobile-space-12);
    }

    .section-title h2 {
        font-size: 1.8rem;
        line-height: 1.2;
        margin-bottom: var(--mobile-space-5);
        letter-spacing: -0.01em;
    }
    
    .section-title h2::before {
        top: -6px;
        left: -12px;
        right: -12px;
        bottom: -6px;
    }
    
    .section-title h2::after {
        width: 70px;
        height: 4px;
        bottom: -8px;
    }
    
    .section-title p {
        font-size: 1rem;
        max-width: 95%;
        padding: 0 var(--mobile-space-2);
    }

    .about-feature {
        width: 100%;
        max-width: 100%;
        margin: 0 0 1.2rem 0;
        padding: 1.2rem 0.8rem;
    }

    .about-feature .icon {
        width: 50px;
        height: 50px;
        margin-bottom: 1rem;
    }

    .about-feature .icon i {
        font-size: 1rem;
    }

    .about-feature h4 {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }

    .about-feature p {
        font-size: 0.85rem;
        line-height: 1.5;
    }

    .about .col-md-6 {
        padding: 0 10px;
        margin-bottom: 0.8rem;
    }

    .project-image,
    .material-image {
        height: 160px;
    }

    .service-icon {
        width: 60px;
        height: 60px;
        font-size: var(--mobile-text-lg);
    }
}

/* Extra Small Mobile Devices (320px and below) */
@media (max-width: 360px) {
    .container {
        padding: 0 8px;
    }

    .hero-content {
        padding: 1.5rem 8px;
    }

    .hero-buttons {
        max-width: 250px;
        padding: 0 8px;
    }

    .hero-buttons .btn {
        width: 160px;
        max-width: 160px;
        padding: 0.55rem 0.8rem;
        font-size: 0.7rem;
        min-height: 38px;
    }

    .about-feature {
        padding: 1rem 0.6rem;
    }

    .about .col-md-6 {
        padding: 0 8px;
    }

    .section-title {
        padding: var(--mobile-space-3) 8px;
        margin-bottom: var(--mobile-space-10);
    }
    
    .section-title h2 {
        font-size: 1.6rem;
        margin-bottom: var(--mobile-space-4);
    }
    
    .section-title h2::after {
        width: 60px;
        height: 3px;
        bottom: -6px;
    }
    
    .section-title p {
        font-size: 0.9rem;
        max-width: 100%;
        padding: 0 var(--mobile-space-1);
    }
}

/* Landscape Mobile Optimization */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        min-height: 100vh;
        padding: var(--mobile-space-4);
    }

    .hero-content {
        padding: var(--mobile-space-6) var(--mobile-space-4);
    }

    .hero h1 {
        font-size: var(--mobile-text-3xl);
        margin-bottom: var(--mobile-space-4);
    }

    .hero .lead {
        font-size: var(--mobile-text-base);
        margin-bottom: var(--mobile-space-6);
    }

    .hero-buttons {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--mobile-space-3);
        justify-content: center;
    }

    .hero-buttons .btn {
        width: auto;
        min-width: 140px;
        padding: var(--mobile-space-3) var(--mobile-space-5);
        font-size: var(--mobile-text-sm);
    }
}

/* Performance Optimizations for Mobile */
@media (max-width: 768px) {
    /* Reduce motion for better performance */
    * {
        animation-duration: 0.3s !important;
        transition-duration: 0.3s !important;
    }

    /* Optimize images */
    img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: optimize-contrast;
    }

    /* Remove unnecessary effects on mobile */
    .hero-overlay,
    .project-overlay {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
}