/* ==========================================
   Responsive CSS
   Mobile-first approach with breakpoints
   ========================================== */

/* ==========================================
   Breakpoints
   ========================================== */
/* 
   - Small devices (phones): < 576px
   - Medium devices (tablets): 576px - 768px
   - Large devices (desktops): 768px - 992px
   - Extra large devices: 992px - 1200px
   - XXL devices: > 1200px
*/

/* ==========================================
   Tablets and Below (max-width: 992px)
   ========================================== */
@media (max-width: 992px) {
    /* Typography */
    html {
        font-size: 15px;
    }

    /* Container */
    .container {
        padding: 0 15px;
    }

    /* Section Padding */
    .section {
        padding: 60px 0;
    }

    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        padding: 80px 30px 40px;
        transition: right 0.3s ease;
        z-index: 1000;
    }

    [data-theme="dark"] .nav-menu {
        background: var(--white);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 20px;
    }

    .nav-link {
        font-size: 1.1rem;
    }

    .nav-toggle,
    .nav-close {
        display: block;
    }

    .nav-close {
        position: absolute;
        top: 30px;
        right: 30px;
    }

    /* Hero Section */
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-text {
        order: 1;
    }

    .hero-image {
        order: 2;
    }

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

    .floating-card {
        width: 200px;
        height: 200px;
    }

    .floating-card i {
        font-size: 5rem;
    }

    /* Statistics */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    /* Services */
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
    }

    /* Technologies */
    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 20px;
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 25px;
    }

    /* Why Us */
    .why-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 25px;
    }

    /* Timeline */
    .timeline-item {
        gap: 20px;
    }

    .timeline-number {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }

    .timeline-item:not(:last-child)::after {
        left: 25px;
    }

    /* Testimonials */
    .slider-prev,
    .slider-next {
        width: 40px;
        height: 40px;
    }

    .slider-prev {
        left: 10px;
    }

    .slider-next {
        right: 10px;
    }

    .testimonial-card {
        padding: 30px;
    }

    /* Contact */
    .contact-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-form {
        padding: 30px;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    /* Lightbox */
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    /* Modal */
    .modal-content {
        padding: 30px;
    }
}

/* ==========================================
   Mobile Devices (max-width: 768px)
   ========================================== */
@media (max-width: 768px) {
    /* Typography */
    html {
        font-size: 14px;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }

    /* Section Header */
    .section-header {
        margin-bottom: 40px;
    }

    .section-description {
        font-size: 1rem;
    }

    /* Hero */
    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

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

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

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

    /* Statistics */
    .stats {
        margin-top: -30px;
        padding: 40px 0;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-card i {
        font-size: 2.5rem;
    }

    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: 25px;
    }

    /* Technologies */
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .tech-item {
        padding: 20px;
    }

    .tech-item i {
        font-size: 2.5rem;
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-filters {
        gap: 10px;
    }

    .filter-btn {
        padding: 8px 20px;
        font-size: 0.9rem;
    }

    /* Why Us */
    .why-grid {
        grid-template-columns: 1fr;
    }

    .why-card {
        padding: 25px;
    }

    /* Timeline */
    .timeline-item {
        flex-direction: column;
        gap: 15px;
    }

    .timeline-item:not(:last-child)::after {
        display: none;
    }

    .timeline-number {
        width: 60px;
        height: 60px;
        margin: 0 auto;
    }

    .timeline-content {
        padding: 20px;
    }

    /* Testimonials */
    .testimonials-slider {
        padding: 0 10px;
    }

    .testimonial-card {
        padding: 25px;
    }

    .testimonial-text {
        font-size: 1rem;
    }

    .testimonial-author img {
        width: 50px;
        height: 50px;
    }

    .slider-prev,
    .slider-next {
        display: none;
    }

    /* FAQ */
    .faq-question {
        padding: 15px 20px;
        font-size: 1rem;
    }

    .faq-answer p {
        padding: 0 20px 15px;
    }

    /* Contact */
    .contact-info h3 {
        font-size: 1.5rem;
    }

    .contact-item {
        gap: 15px;
    }

    .contact-item i {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }

    .social-links a {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }

    .contact-form {
        padding: 25px;
    }

    /* Footer */
    .footer {
        padding: 40px 0 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-section {
        text-align: center;
    }

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

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form button {
        width: 100%;
        height: 50px;
    }

    .footer-contact li {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

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

    /* Scroll to Top */
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 1.1rem;
    }

    /* Lightbox */
    .lightbox-close {
        top: 15px;
        right: 15px;
        width: 40px;
        height: 40px;
    }

    .lightbox-prev,
    .lightbox-next {
        display: none;
    }

    .lightbox-content {
        max-width: 95%;
        max-height: 85%;
    }

    .lightbox-caption {
        font-size: 1rem;
        margin-top: 15px;
    }

    /* Modal */
    .modal {
        padding: 10px;
    }

    .modal-content {
        padding: 25px;
        max-height: 95vh;
    }

    .modal-close {
        top: 15px;
        right: 15px;
    }
}

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

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.1rem; }

    /* Navigation */
    .nav-menu {
        width: 100%;
        right: -100%;
    }

    .nav {
        padding: 15px;
    }

    .nav-logo {
        font-size: 1.1rem;
    }

    .nav-logo .logo-img {
        height: 30px;
    }

    .nav-logo .logo-text {
        font-size: 1rem;
    }

    /* Hero */
    .hero {
        padding: 100px 0 40px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .floating-card {
        width: 150px;
        height: 150px;
    }

    .floating-card i {
        font-size: 4rem;
    }

    /* Buttons */
    .btn {
        padding: 12px 20px;
        font-size: 0.95rem;
    }

    /* Statistics */
    .stat-card {
        padding: 20px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 1rem;
    }

    /* Services */
    .service-card {
        padding: 20px;
    }

    .service-icon {
        width: 60px;
        height: 60px;
    }

    .service-icon i {
        font-size: 1.75rem;
    }

    /* Technologies */
    .tech-item {
        padding: 15px;
    }

    .tech-item i {
        font-size: 2rem;
    }

    .tech-item span {
        font-size: 0.9rem;
    }

    /* Projects */
    .project-content {
        padding: 20px;
    }

    .project-title {
        font-size: 1.1rem;
    }

    .project-description {
        font-size: 0.9rem;
    }

    /* Why Us */
    .why-card {
        padding: 20px;
    }

    .why-icon {
        width: 70px;
        height: 70px;
    }

    .why-icon i {
        font-size: 2rem;
    }

    /* Timeline */
    .timeline-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    .timeline-content {
        padding: 15px;
    }

    /* Testimonials */
    .testimonial-card {
        padding: 20px;
    }

    .testimonial-text {
        font-size: 0.95rem;
    }

    .stars i {
        font-size: 1rem;
    }

    /* FAQ */
    .faq-question {
        padding: 12px 15px;
        font-size: 0.95rem;
    }

    .faq-answer p {
        padding: 0 15px 12px;
        font-size: 0.9rem;
    }

    /* Contact */
    .contact-item i {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .contact-form {
        padding: 20px;
    }

    .form-group label {
        font-size: 0.9rem;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 0.95rem;
    }

    /* Footer */
    .footer-section h3,
    .footer-section h4 {
        font-size: 1.1rem;
    }

    .footer-section p {
        font-size: 0.9rem;
    }

    .footer-links li,
    .footer-contact li {
        font-size: 0.9rem;
    }

    /* Scroll to Top */
    .scroll-top {
        width: 40px;
        height: 40px;
        bottom: 15px;
        right: 15px;
        font-size: 1rem;
    }
}

/* ==========================================
   Landscape Orientation (for mobile devices)
   ========================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 40px;
    }

    .hero-content {
        gap: 30px;
    }

    .floating-card {
        width: 150px;
        height: 150px;
    }

    .modal-content {
        max-height: 90vh;
        overflow-y: auto;
    }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    .header,
    .nav,
    .nav-menu,
    .scroll-top,
    .preloader,
    .reading-progress,
    .hero-scroll,
    .slider-btn,
    .lightbox,
    .modal {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        page-break-inside: avoid;
    }

    a {
        text-decoration: underline;
    }

    .btn {
        border: 1px solid black;
    }
}

/* ==========================================
   Touch Device Optimizations
   ========================================== */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch target sizes */
    .btn,
    .nav-link,
    .filter-btn,
    .faq-question {
        min-height: 44px;
        min-width: 44px;
    }

    /* Remove hover effects on touch devices */
    .service-card:hover,
    .project-card:hover,
    .why-card:hover,
    .tech-item:hover {
        transform: none;
    }

    /* Simplify animations for better performance */
    * {
        animation-duration: 0.3s !important;
        transition-duration: 0.3s !important;
    }
}

/* ==========================================
   High DPI Displays
   ========================================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Optimize for retina displays */
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* ==========================================
   Reduced Motion
   ========================================== */
@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 Media Query
   ========================================== */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --bg-color: #1a1a2e;
        --text-color: #e8e8e8;
        --text-light: #a0a0a0;
        --white: #16213e;
        --border-color: #2d3748;
    }
}

/* ==========================================
   Large Screens (min-width: 1400px)
   ========================================== */
@media (min-width: 1400px) {
    :root {
        --container-width: 1320px;
    }

    .hero-title {
        font-size: 4rem;
    }

    .section-title {
        font-size: 3rem;
    }
}

/* ==========================================
   Ultra Wide Screens (min-width: 1920px)
   ========================================== */
@media (min-width: 1920px) {
    :root {
        --container-width: 1600px;
    }

    html {
        font-size: 18px;
    }
}