/* Responsive Design - Mobile First Approach */

/* Mobile Devices (320px - 768px) */
@media (max-width: 768px) {
    
    /* Container */
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Language Switcher */
    .language-switcher {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        flex-direction: column;
        width: auto;
    }
    
    .lang-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    /* Navigation */
    .nav-container {
        padding: var(--spacing-sm) var(--spacing-sm);
    }
    
    .nav-logo h2 {
        font-size: var(--font-size-xl);
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-large);
        padding: var(--spacing-lg) 0;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: var(--spacing-md) 0;
    }
    
    .nav-link {
        font-size: var(--font-size-lg);
        padding: var(--spacing-md);
        display: block;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* Hero Section */
    .hero {
        padding: 100px 0 60px;
        text-align: center;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .avatar-container {
        width: 200px;
        height: 200px;
        order: -1;
    }
    
    .avatar-ring {
        top: -15px;
        left: -15px;
        right: -15px;
        bottom: -15px;
    }
    
    /* Section Spacing */
    section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-xl);
    }
    
    /* About Section */
    .about-text p {
        font-size: var(--font-size-base);
    }
    
    .expertise-tags {
        justify-content: center;
    }
    
    .tag {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    /* Services Section */
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .service-card {
        padding: var(--spacing-lg);
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
        margin-bottom: var(--spacing-md);
    }
    
    .service-icon i {
        font-size: var(--font-size-xl);
    }
    
    .service-features li {
        padding: var(--spacing-xs) 0;
        font-size: var(--font-size-sm);
    }
    
    /* Portfolio Section */
    .portfolio-filters {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        width: 200px;
        text-align: center;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .portfolio-image {
        height: 180px;
    }
    
    .portfolio-info {
        padding: var(--spacing-md);
    }
    
    .portfolio-info h3 {
        font-size: var(--font-size-base);
    }
    
    .portfolio-tags {
        gap: var(--spacing-xs);
    }
    
    .portfolio-tags .tag {
        font-size: 0.7rem;
        padding: 2px var(--spacing-xs);
    }
    
    /* Contact Section */
    .contact-methods {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .contact-method {
        padding: var(--spacing-lg);
    }
    
    .contact-icon {
        width: 60px;
        height: 60px;
        margin-bottom: var(--spacing-md);
    }
    
    .contact-icon i {
        font-size: var(--font-size-xl);
    }
    
    .contact-form input,
    .contact-form select,
    .contact-form textarea {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .contact-form textarea {
        min-height: 100px;
    }
    
    /* Professional Links */
    .professional-links {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .professional-link {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .footer-links {
        align-items: center;
    }
    
    /* Modal */
    .modal {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        margin: 20px auto;
        max-height: 90vh;
    }
    
    .modal-body {
        padding: var(--spacing-lg);
    }
    
    .modal-close {
        top: var(--spacing-sm);
        left: var(--spacing-sm);
        width: 35px;
        height: 35px;
        font-size: var(--font-size-lg);
    }
    
    /* Toast */
    .toast {
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        top: 80px;
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm);
    }
}

/* Tablet Devices (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
    
    /* Container */
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    /* Hero Section */
    .hero-content {
        gap: var(--spacing-2xl);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .avatar-container {
        width: 250px;
        height: 250px;
    }
    
    /* Services Grid */
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    /* Portfolio Grid */
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    /* Contact Methods */
    .contact-methods {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-method {
        max-width: 600px;
        margin: 0 auto;
    }
}

/* Large Desktop (1200px+) */
@media (min-width: 1200px) {
    
    /* Container */
    .container {
        max-width: 1400px;
        padding: 0 var(--spacing-2xl);
    }
    
    /* Hero Section */
    .hero-content {
        gap: var(--spacing-3xl);
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .avatar-container {
        width: 350px;
        height: 350px;
    }
    
    /* Services Grid */
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-2xl);
    }
    
    /* Portfolio Grid */
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-2xl);
    }
    
    /* Section Spacing */
    section {
        padding: var(--spacing-3xl) 0;
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
        margin-bottom: var(--spacing-3xl);
    }
}

/* Ultra Wide Screens (1600px+) */
@media (min-width: 1600px) {
    
    .container {
        max-width: 1600px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3.5rem;
    }
}

/* High DPI Screens */
@media only screen and (-webkit-min-device-pixel-ratio: 2),
       only screen and (min--moz-device-pixel-ratio: 2),
       only screen and (-o-min-device-pixel-ratio: 2/1),
       only screen and (min-device-pixel-ratio: 2),
       only screen and (min-resolution: 192dpi),
       only screen and (min-resolution: 2dppx) {
    
    /* Optimize images and fonts for high DPI */
    .avatar {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
    
    .portfolio-image img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Print Styles */
@media print {
    
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .language-switcher,
    .navbar,
    .hamburger,
    .hero-buttons,
    .contact-method,
    .professional-links,
    .modal,
    .toast {
        display: none !important;
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        page-break-after: avoid;
    }
    
    .service-card,
    .portfolio-item {
        page-break-inside: avoid;
    }
    
    a {
        text-decoration: underline;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
}

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .avatar-ring {
        animation: none;
    }
    
    .hero-bg-animation {
        background: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    
    :root {
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --text-dark: #f8fafc;
        --text-light: #cbd5e1;
        --border-color: #334155;
        --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
        --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
        --shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    }
    
    .navbar {
        background: rgba(15, 23, 42, 0.95);
        border-bottom: 1px solid var(--border-color);
    }
    
    .service-card,
    .portfolio-item,
    .contact-method {
        background: var(--bg-secondary);
        border-color: var(--border-color);
    }
    
    .contact-form input,
    .contact-form select,
    .contact-form textarea {
        background: var(--bg-primary);
        border-color: var(--border-color);
        color: var(--text-dark);
    }
    
    .filter-btn {
        background: var(--bg-secondary);
        border-color: var(--border-color);
        color: var(--text-light);
    }
    
    .tag {
        background: var(--bg-secondary);
        border-color: var(--border-color);
    }
}

/* Focus Styles for Accessibility */
button:focus,
.btn:focus,
input:focus,
select:focus,
textarea:focus,
.nav-link:focus,
.professional-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    
    :root {
        --primary-color: #000080;
        --text-dark: #000000;
        --text-light: #333333;
        --border-color: #000000;
        --bg-primary: #ffffff;
        --bg-secondary: #f0f0f0;
    }
    
    .btn-primary {
        background: #000080;
        border: 2px solid #000080;
    }
    
    .btn-secondary {
        border: 2px solid #000080;
        color: #000080;
    }
    
    .service-card,
    .portfolio-item,
    .contact-method {
        border: 2px solid #000000;
    }
}

/* Touch Device Optimizations */
@media (pointer: coarse) {
    
    /* Larger touch targets */
    .btn,
    .nav-link,
    .filter-btn,
    .lang-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .hamburger {
        padding: var(--spacing-sm);
    }
    
    .professional-link {
        min-height: 44px;
    }
    
    /* Remove hover effects on touch devices */
    .service-card:hover,
    .portfolio-item:hover {
        transform: none;
        box-shadow: var(--shadow-medium);
    }
    
    .portfolio-overlay {
        opacity: 1;
        background: rgba(37, 99, 235, 0.7);
    }
    
    .portfolio-image img {
        transform: none;
    }
}

/* Landscape Phone Orientation */
@media screen and (max-height: 500px) and (orientation: landscape) {
    
    .hero {
        padding: 80px 0 40px;
    }
    
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
        align-items: center;
    }
    
    .avatar-container {
        width: 150px;
        height: 150px;
        order: 0;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .hero-buttons {
        flex-direction: row;
        gap: var(--spacing-sm);
    }
    
    .hero-buttons .btn {
        width: auto;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}