/* ================================
   USS DZ - Responsive Stylesheet
   Mobile First Approach
   ================================ */

/* ================================
   Extra Large (1200px and up)
   ================================ */
@media (min-width: 1200px) {
    .hero-title-main {
        font-size: 4rem;
    }

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

    .vision-title {
        font-size: 2.75rem;
    }
}

/* ================================
   Large Devices (992px - 1199px)
   ================================ */
@media (max-width: 1199px) {
    :root {
        --section-padding: 80px;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .provision-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-header {
        padding: 12px 25px;
    }

    .category-header::after {
        width: 24px;
        height: 24px;
        right: 15px;
    }

    .category-title {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }

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

    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
    }

    .footer-contact {
        grid-column: 1 / -1;
        margin-top: 20px;
    }
}

/* ================================
   Medium Devices (768px - 991px)
   ================================ */
@media (max-width: 991px) {
    :root {
        --section-padding: 70px;
    }

    /* Header */
    .nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        gap: 30px;
    }

    .nav-link {
        font-size: 1.5rem;
        color: var(--white);
    }

    .header.scrolled .nav-link {
        color: var(--white);
    }

    .menu-toggle {
        display: flex;
    }

    .lang-selector {
        position: fixed;
        bottom: 30px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 1002;
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav.active ~ .lang-selector,
    .lang-selector.visible {
        opacity: 1;
        visibility: visible;
    }

    /* Hero */
    .hero-title-main {
        font-size: 2.75rem;
    }

    .hero-title-sub {
        font-size: 1.25rem;
    }

    .hero-stats {
        gap: 40px;
    }

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

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .about-images {
        order: -1;
    }

    .about-img-secondary {
        right: 20px;
        bottom: -30px;
        width: 160px;
        height: 160px;
    }

    .about-experience {
        left: 20px;
    }

    .about-content .section-tag,
    .about-content .section-title {
        text-align: center;
    }

    .about-text {
        text-align: center;
    }

    .about-features {
        justify-content: center;
    }

    /* Vision */
    .vision-stats {
        gap: 50px;
    }

    .vs-number {
        font-size: 2.75rem;
    }

    /* Gallery */
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Contact */
    .contact-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-cta-buttons {
        gap: 20px;
    }

    .contact-cta-btn {
        padding: 18px 30px;
        font-size: 1rem;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }

    .footer-brand {
        grid-column: 1 / -1;
        text-align: center;
    }

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

/* ================================
   Small Devices (576px - 767px)
   ================================ */
@media (max-width: 767px) {
    :root {
        --section-padding: 60px;
    }

    .container {
        padding: 0 15px;
    }

    /* Typography */
    .section-title {
        font-size: 2rem;
    }

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

    /* Hero */
    .hero {
        padding-top: 80px;
    }

    .hero-title-main {
        font-size: 2.25rem;
    }

    .hero-title-sub {
        font-size: 1.125rem;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 30px;
        padding-top: 30px;
        margin-top: 30px;
    }

    .stat-item {
        display: flex;
        align-items: center;
        gap: 15px;
    }

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

    .stat-label {
        text-align: left;
        margin-top: 0;
    }

    .scroll-indicator {
        display: none;
    }

    /* Services */
    .services-grid,
    .provision-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .service-category {
        margin-bottom: 40px;
    }

    .category-header {
        padding: 10px 15px;
    }

    .category-header::after {
        display: none;
    }

    .category-title {
        font-size: 0.95rem;
        letter-spacing: 1px;
    }

    .service-card {
        max-width: 400px;
        margin: 0 auto;
    }

    /* About */
    .about-img-main img {
        height: 350px;
    }

    .about-img-secondary {
        width: 140px;
        height: 140px;
        right: 10px;
        bottom: -20px;
    }

    .about-experience {
        left: 10px;
        top: 20px;
        padding: 20px 25px;
    }

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

    .about-features {
        grid-template-columns: 1fr;
    }

    .about-mission {
        padding: 20px;
    }

    /* Vision */
    .vision {
        padding: 80px 0;
    }

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

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

    .vision-stats {
        flex-direction: column;
        gap: 30px;
    }

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

    /* Gallery */
    .gallery-filter {
        gap: 10px;
    }

    .filter-btn {
        padding: 10px 20px;
        font-size: 0.875rem;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

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

    .lightbox-prev {
        left: 15px;
    }

    .lightbox-next {
        right: 15px;
    }

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

    /* Contact */
    .contact-cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .contact-cta-btn {
        width: 100%;
        max-width: 350px;
        justify-content: center;
        padding: 16px 25px;
    }

    .contact-info-grid {
        grid-template-columns: 1fr;
    }

    .contact-map-wrapper {
        height: 250px;
    }

    /* Footer */
    .footer {
        padding: 60px 0 25px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 35px;
    }

    .footer-links ul,
    .footer-services ul {
        align-items: center;
    }

    .footer-links a:hover,
    .footer-services a:hover {
        padding-left: 0;
    }

    /* Floating Buttons */
    .whatsapp-btn {
        width: 55px;
        height: 55px;
        right: 20px;
        bottom: 20px;
    }

    .back-to-top {
        width: 45px;
        height: 45px;
        right: 20px;
        bottom: 85px;
    }
}

/* ================================
   Extra Small Devices (< 576px)
   ================================ */
@media (max-width: 575px) {
    :root {
        --section-padding: 50px;
    }

    html {
        font-size: 15px;
    }

    /* Header */
    .logo img {
        width: 40px;
        height: 40px;
    }

    .logo span {
        font-size: 1.25rem;
    }

    .header {
        padding: 15px 0;
    }

    .header.scrolled {
        padding: 10px 0;
    }

    /* Hero */
    .hero-title-main {
        font-size: 1.875rem;
    }

    .hero-title-sub {
        font-size: 1rem;
    }

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

    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }

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

    .section-tag {
        font-size: 0.75rem;
    }

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

    /* Service Cards */
    .service-title {
        font-size: 1.125rem;
    }

    .service-desc {
        font-size: 0.9rem;
    }

    .service-features li {
        font-size: 0.85rem;
    }

    /* About */
    .about-img-main img {
        height: 280px;
    }

    .about-img-secondary {
        width: 120px;
        height: 120px;
    }

    .about-experience {
        padding: 15px 20px;
    }

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

    .exp-text {
        font-size: 0.75rem;
    }

    .about-feature {
        flex-direction: column;
        text-align: center;
    }

    .feature-icon {
        margin: 0 auto;
    }

    /* Vision */
    .vision {
        padding: 60px 0;
    }

    .vision-title {
        font-size: 1.5rem;
    }

    /* Gallery */
    .gallery-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .gallery-title {
        font-size: 0.875rem;
    }

    /* Contact */
    .contact-form-wrapper {
        padding: 20px;
    }

    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 12px 15px;
    }

    .contact-card {
        padding: 20px;
    }

    .contact-icon {
        width: 45px;
        height: 45px;
    }

    /* Footer */
    .footer-logo {
        width: 60px;
        height: 60px;
    }

    .footer-links h4,
    .footer-services h4,
    .footer-contact h4 {
        font-size: 1.125rem;
    }
}

/* ================================
   Landscape Mode on Mobile
   ================================ */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .scroll-indicator {
        display: none;
    }

    .nav {
        overflow-y: auto;
    }

    .nav-list {
        gap: 20px;
    }

    .nav-link {
        font-size: 1.25rem;
    }
}

/* ================================
   High Resolution Displays
   ================================ */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-bg::before {
        background-size: cover;
    }

    .vision-bg {
        background-size: cover;
    }
}

/* ================================
   Print Styles
   ================================ */
@media print {
    .header,
    .scroll-indicator,
    .whatsapp-btn,
    .back-to-top,
    .gallery-filter,
    .lightbox,
    .loader {
        display: none !important;
    }

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

    .hero {
        min-height: auto;
        padding: 20pt 0;
        background: none !important;
    }

    .hero-title-main,
    .hero-title-sub,
    .hero-description {
        color: #000 !important;
    }

    .section {
        padding: 30pt 0;
        page-break-inside: avoid;
    }

    .services-grid,
    .provision-grid,
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-header {
        background: var(--primary) !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 10pt;
        color: #666;
    }

    .footer {
        background: none !important;
        color: #000 !important;
    }
}

/* ================================
   RTL Responsive Adjustments
   ================================ */
html[dir="rtl"] {
    /* Contact Card Hover */
    .contact-card:hover {
        transform: translateX(-10px);
    }

    /* Footer Links Hover */
    .footer-links a:hover,
    .footer-services a:hover {
        padding-right: 10px;
        padding-left: 0;
    }

    /* About Experience Badge */
    .about-experience {
        left: auto;
        right: -30px;
    }

    /* About Secondary Image */
    .about-img-secondary {
        right: auto;
        left: -40px;
    }

    /* Service Features */
    .service-features li {
        padding-left: 0;
        padding-right: 25px;
    }

    .service-features li::before {
        left: auto;
        right: 0;
    }
}

@media (max-width: 767px) {
    html[dir="rtl"] {
        .about-experience {
            right: 10px;
        }

        .about-img-secondary {
            left: 10px;
        }

        .footer-links a:hover,
        .footer-services a:hover {
            padding-right: 0;
        }
    }
}