/* Mobile First Responsive Design */

/* Small devices (phones, 576px and up) */
@media (max-width: 575.98px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
        padding-left: 0;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-medium);
        padding: var(--spacing-xl) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-text-content {
        text-align: center;
    }
    
    .about-buttons {
        justify-content: center;
    }
    
    .profile-img,
    .profile-placeholder {
        width: 250px;
        height: 250px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 50px;
        padding-right: 0;
    }
    
    .timeline-marker {
        left: 10px !important;
        right: auto !important;
    }
    
    .experience-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .experience-period {
        order: 2;
    }
    
    .project-details-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-categories {
        grid-template-columns: 1fr;
    }
    
    .project-meta {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .project-links {
        width: 100%;
        justify-content: flex-start;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .back-to-top {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 45px;
        height: 45px;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        width: calc(100% - 60px);
        left: 60px !important;
        padding-left: var(--spacing-xl);
        padding-right: 0;
    }
    
    .timeline-marker {
        left: 20px !important;
        right: auto !important;
    }
    
    .experience-item {
        grid-template-columns: 150px 1fr;
        gap: var(--spacing-lg);
    }
    
    .project-details-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }
    
    .about-grid {
        grid-template-columns: 1fr 1.5fr;
        gap: var(--spacing-2xl);
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    }
    
    .timeline::before {
        left: 50%;
    }
    
    .timeline-item:nth-child(odd) {
        left: 0;
        padding-right: var(--spacing-xl);
    }
    
    .timeline-item:nth-child(even) {
        left: 50%;
        padding-left: var(--spacing-xl);
    }
    
    .timeline-marker {
        position: absolute;
    }
    
    .timeline-item:nth-child(odd) .timeline-marker {
        right: -10px;
    }
    
    .timeline-item:nth-child(even) .timeline-marker {
        left: -10px;
    }
    
    .experience-item {
        grid-template-columns: 180px 1fr;
        gap: var(--spacing-xl);
    }
    
    .project-details-grid {
        grid-template-columns: 2fr 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 992px) {
    .nav-menu {
        display: flex;
    }
    
    .nav-toggle {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr 2fr;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
    
    .timeline::before {
        left: 50%;
    }
    
    .timeline-item:nth-child(odd) {
        left: 0;
        padding-right: var(--spacing-2xl);
    }
    
    .timeline-item:nth-child(even) {
        left: 50%;
        padding-left: var(--spacing-2xl);
    }
    
    .timeline-marker {
        position: absolute;
    }
    
    .timeline-item:nth-child(odd) .timeline-marker {
        right: -10px;
    }
    
    .timeline-item:nth-child(even) .timeline-marker {
        left: -10px;
    }
    
    .experience-item {
        grid-template-columns: 200px 1fr;
    }
    
    .project-details-grid {
        grid-template-columns: 2fr 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr 1fr;
    }
}

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

/* Print styles */
@media print {
    .navbar,
    .footer,
    .back-to-top,
    .cta-section,
    .hero-buttons,
    .project-actions,
    .about-buttons {
        display: none;
    }
    
    .hero {
        padding-top: 0;
        min-height: auto;
    }
    
    .section-title {
        page-break-after: avoid;
    }
    
    .project-card,
    .experience-item,
    .education-item {
        page-break-inside: avoid;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
}

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

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-light: #64748b;
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --border-color: #334155;
    }
    
    .navbar {
        background-color: rgba(15, 23, 42, 0.95);
    }
    
    .form-control {
        background-color: var(--bg-secondary);
        color: var(--text-primary);
    }
    
    .form-control:focus {
        background-color: var(--bg-primary);
    }
}

/* Focus styles for accessibility */
.btn:focus,
.nav-link:focus,
.form-control:focus,
.social-link:focus,
.project-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip to content link for screen readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* Media Gallery Responsive */
@media (max-width: 767.98px) {
    .media-gallery {
        grid-template-columns: 1fr;
    }
    
    .media-image,
    .media-video {
        height: 200px;
    }
    
    .media-modal-content {
        width: 95%;
        padding: var(--spacing-md);
    }
    
    .media-modal-image {
        max-height: 70vh;
    }
}