/* ===========================
   Responsive Design
   =========================== */

/* Splash Screen Responsive */
@media (max-width: 768px) {
    .splash-logo {
        width: 70vw;
        max-width: 400px;
        padding: 3rem;
    }
    
    .splash-loading {
        width: 300px;
    }
    
    .splash-screen.zoom-out .splash-logo {
        width: 40px;
        height: 40px;
        transform: translate(
            calc(-50vw + 80px), 
            calc(-50vh + 30px)
        );
    }
}

@media (max-width: 480px) {
    .splash-logo {
        width: 80vw;
        max-width: 300px;
        padding: 2rem;
    }
    
    .splash-loading {
        width: 250px;
        height: 4px;
    }
    
    .splash-screen.zoom-out .splash-logo {
        width: 35px;
        height: 35px;
        transform: translate(
            calc(-50vw + 60px), 
            calc(-50vh + 25px)
        );
    }
}

/* Large Tablets and Small Desktops (max-width: 1024px) */
@media (max-width: 1024px) {
    .container {
        max-width: 100%;
        padding: 0 30px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .about-grid,
    .services-grid,
    .portfolio-grid,
    .testimonials-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
}

/* Tablets (max-width: 768px) */
@media (max-width: 768px) {
    /* Typography */
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* Header & Navigation */
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 280px;
        background-color: var(--bg-white);
        flex-direction: column;
        align-items: flex-start;
        padding: 5rem 2rem 2rem;
        box-shadow: var(--shadow-xl);
        transition: right 0.3s ease;
        gap: 0;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu li {
        width: 100%;
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-link {
        display: block;
        font-size: 1.125rem;
    }
    
    .nav-link::after {
        display: none;
    }
    
    /* Logo */
    .logo img {
        height: 40px;
    }
    
    /* Sections */
    section {
        padding: 4rem 0;
    }
    
    .section-header {
        margin-bottom: 3rem;
    }
    
    /* Hero Section */
    .hero-section {
        min-height: 90vh;
    }
    
    .hero-content {
        padding: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        text-align: center;
        padding: 0.875rem 2rem;
    }
    
    /* About Section */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .about-card {
        padding: 2rem;
    }
    
    /* CEO Message */
    .ceo-message {
        padding: 2rem;
    }
    
    .ceo-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .ceo-photo-placeholder,
    .ceo-logo {
        width: 150px;
        height: 200px;
        margin: 0 auto;
        font-size: 4rem;
    }
    
    .ceo-text h3 {
        font-size: 1.5rem;
    }
    
    .ceo-greeting {
        font-size: 1.125rem;
    }
    
    .ceo-message-content {
        font-size: 1rem;
    }
    
    /* Company Overview */
    .company-overview {
        padding: 2rem;
    }
    
    .subsection-title {
        font-size: 1.5rem;
    }
    
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    /* Organization */
    .organization {
        padding: 2rem;
    }
    
    .org-level {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
    
    .org-box {
        min-width: 250px;
    }
    
    /* Timeline */
    .company-info {
        padding: 2rem;
    }
    
    .info-content h3 {
        font-size: 1.75rem;
    }
    
    .company-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .timeline-wrapper {
        padding: 2rem;
    }
    
    .timeline {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .timeline-year {
        font-size: 1.75rem;
    }
    
    /* Certifications */
    .certifications {
        padding: 2rem;
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Service Detail */
    .service-detail {
        padding: 2rem;
    }
    
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    /* Competitive Advantage */
    .competitive-advantage {
        padding: 2rem;
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    
    /* Services Section */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .service-image {
        height: 180px;
        font-size: 3rem;
    }
    
    .service-content {
        padding: 1.5rem;
    }
    
    .service-content h3 {
        font-size: 1.5rem;
    }
    
    /* Portfolio Section */
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .portfolio-image {
        height: 220px;
    }
    
    .portfolio-placeholder {
        font-size: 3rem;
    }
    
    .portfolio-info {
        padding: 1.25rem;
    }
    
    .portfolio-info h3 {
        font-size: 1.25rem;
    }
    
    .portfolio-stats {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    /* Testimonials Section */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .testimonial-card {
        padding: 2rem;
    }
    
    .testimonial-text {
        font-size: 1rem;
    }
    
    /* Contact Section */
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-info {
        padding: 2rem;
    }
    
    .contact-info h3 {
        font-size: 1.5rem;
    }
    
    .contact-form-wrapper {
        padding: 2rem;
    }
    
    .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    /* Location Section */
    .location-section {
        padding: 2rem;
    }
    
    .location-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .map-placeholder {
        height: 300px;
    }
    
    .directions h4 {
        font-size: 1.125rem;
    }
    
    /* Recruitment Section */
    .recruitment-section {
        padding: 2rem;
    }
    
    .recruitment-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer {
        padding: 2.5rem 0 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-section h3 {
        font-size: 1.25rem;
    }
    
    .footer-section h4 {
        font-size: 1rem;
    }
    
    /* Scroll to Top */
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: 1.5rem;
        right: 1.5rem;
    }
}

/* Mobile Devices (max-width: 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }
    
    /* Typography */
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 0.95rem;
    }
    
    /* Logo */
    .logo img {
        height: 35px;
    }
    
    /* Sections */
    section {
        padding: 3rem 0;
    }
    
    .section-header {
        margin-bottom: 2rem;
    }
    
    /* Hero Section */
    .hero-section {
        min-height: 80vh;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .scroll-indicator {
        bottom: 1rem;
        font-size: 1.25rem;
    }
    
    /* About Section */
    .about-card {
        padding: 1.5rem;
    }
    
    .about-icon {
        width: 70px;
        height: 70px;
        font-size: 1.75rem;
    }
    
    .about-card h3 {
        font-size: 1.25rem;
    }
    
    .about-card p {
        font-size: 0.95rem;
    }
    
    /* CEO Message */
    .ceo-message {
        padding: 1.5rem;
    }
    
    .ceo-photo-placeholder,
    .ceo-logo {
        width: 120px;
        height: 160px;
        font-size: 3rem;
    }
    
    .ceo-text h3 {
        font-size: 1.375rem;
    }
    
    .ceo-greeting {
        font-size: 1rem;
    }
    
    .ceo-message-content {
        font-size: 0.95rem;
    }
    
    /* Company Overview */
    .company-overview {
        padding: 1.5rem;
    }
    
    .subsection-title {
        font-size: 1.375rem;
    }
    
    .overview-item {
        padding: 1rem;
    }
    
    .overview-label {
        font-size: 0.85rem;
    }
    
    .overview-value {
        font-size: 0.95rem;
    }
    
    /* Competencies */
    .competency-grid {
        grid-template-columns: 1fr;
    }
    
    .competency-item {
        padding: 1.5rem;
    }
    
    .competency-icon {
        width: 60px;
        height: 60px;
        font-size: 1.75rem;
    }
    
    /* Organization */
    .organization {
        padding: 1.5rem;
    }
    
    .org-box {
        min-width: auto;
        width: 100%;
        max-width: 300px;
    }
    
    .org-box i {
        font-size: 2rem;
    }
    
    /* Timeline */
    .company-info {
        padding: 1.5rem;
    }
    
    .info-content h3 {
        font-size: 1.5rem;
    }
    
    .company-description {
        font-size: 0.95rem;
    }
    
    .timeline-wrapper {
        padding: 1.5rem;
    }
    
    .timeline-year {
        font-size: 1.5rem;
    }
    
    .timeline-content h4 {
        font-size: 1.125rem;
    }
    
    .timeline-content p {
        font-size: 0.875rem;
    }
    
    .timeline-content ul li {
        font-size: 0.9rem;
        padding: 0.4rem 0;
    }
    
    /* Certifications */
    .certifications {
        padding: 1.5rem;
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .cert-item {
        padding: 1.5rem;
    }
    
    .cert-item i {
        font-size: 2.5rem;
    }
    
    /* Service Detail */
    .service-detail {
        padding: 1.5rem;
    }
    
    .detail-text h4 {
        font-size: 1.25rem;
    }
    
    .detail-text p {
        font-size: 0.95rem;
    }
    
    .stats-row {
        grid-template-columns: 1fr;
    }
    
    .stat-box {
        padding: 1.5rem 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    .detail-list li {
        padding: 0.875rem;
        font-size: 0.9rem;
    }
    
    .detail-list li strong {
        display: block;
        margin-bottom: 0.25rem;
    }
    
    /* Competitive Advantage */
    .competitive-advantage {
        padding: 1.5rem;
    }
    
    .advantage-item {
        padding: 1.5rem;
        padding-top: 3rem;
    }
    
    .advantage-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
        top: -15px;
        left: 1.5rem;
    }
    
    .advantage-item h4 {
        font-size: 1.125rem;
    }
    
    .advantage-item p {
        font-size: 0.9rem;
    }
    
    /* Services Section */
    .service-image {
        height: 160px;
        font-size: 2.5rem;
    }
    
    .service-content {
        padding: 1.25rem;
    }
    
    .service-content h3 {
        font-size: 1.375rem;
    }
    
    .service-content > p {
        font-size: 0.95rem;
    }
    
    .service-list li {
        font-size: 0.9rem;
        padding: 0.5rem 0;
    }
    
    /* Portfolio Section */
    .portfolio-image {
        height: 200px;
    }
    
    .portfolio-placeholder {
        font-size: 2.5rem;
    }
    
    .portfolio-overlay h4 {
        font-size: 1.25rem;
    }
    
    .portfolio-overlay p {
        font-size: 0.875rem;
    }
    
    .portfolio-info {
        padding: 1rem;
    }
    
    .portfolio-info h3 {
        font-size: 1.125rem;
    }
    
    .portfolio-info > p {
        font-size: 0.9rem;
    }
    
    .portfolio-stats span {
        font-size: 0.85rem;
    }
    
    /* Testimonials Section */
    .testimonial-card {
        padding: 1.5rem;
    }
    
    .testimonial-icon {
        font-size: 2rem;
    }
    
    .testimonial-text {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }
    
    .author-info h4 {
        font-size: 1rem;
    }
    
    .author-info p {
        font-size: 0.85rem;
    }
    
    .testimonial-rating i {
        font-size: 0.9rem;
    }
    
    /* Contact Section */
    .contact-info {
        padding: 1.5rem;
    }
    
    .contact-info h3 {
        font-size: 1.375rem;
        margin-bottom: 1.5rem;
    }
    
    .info-item {
        gap: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .info-item i {
        font-size: 1.25rem;
        width: 25px;
    }
    
    .info-item h4 {
        font-size: 1rem;
    }
    
    .info-item p {
        font-size: 0.875rem;
    }
    
    .contact-form-wrapper {
        padding: 1.5rem;
    }
    
    .form-group {
        margin-bottom: 1.25rem;
    }
    
    .form-group label {
        font-size: 0.95rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.75rem;
        font-size: 0.95rem;
    }
    
    .checkbox-group label {
        font-size: 0.9rem;
    }
    
    /* Location Section */
    .location-section {
        padding: 1.5rem;
    }
    
    .map-placeholder {
        height: 250px;
        padding: 1.5rem;
    }
    
    .map-placeholder i {
        font-size: 3rem;
    }
    
    .map-placeholder p {
        font-size: 1rem;
    }
    
    .directions h4 {
        font-size: 1.125rem;
        margin-top: 1.5rem;
    }
    
    .directions ul li {
        padding: 0.65rem 0.875rem;
        font-size: 0.9rem;
    }
    
    /* Recruitment Section */
    .recruitment-section {
        padding: 1.5rem;
    }
    
    .recruitment-intro p {
        font-size: 1rem;
    }
    
    .recruitment-card {
        padding: 1.5rem;
    }
    
    .recruitment-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .recruitment-card h4 {
        font-size: 1.25rem;
    }
    
    .recruitment-card ul li {
        font-size: 0.9rem;
    }
    
    .recruitment-benefits {
        padding: 1.5rem;
    }
    
    .recruitment-benefits h4 {
        font-size: 1.25rem;
    }
    
    .benefit-item {
        padding: 0.875rem 1rem;
        font-size: 0.9rem;
    }
    
    .benefit-item i {
        font-size: 1.25rem;
    }
    
    .recruitment-cta {
        padding: 1.5rem;
    }
    
    .recruitment-cta p {
        font-size: 0.95rem;
    }
    
    .recruitment-cta .btn {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
    
    /* Footer */
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-content {
        gap: 1.5rem;
    }
    
    .footer-section h3 {
        font-size: 1.125rem;
        margin-bottom: 0.875rem;
    }
    
    .footer-section h4 {
        font-size: 0.95rem;
        margin-bottom: 0.875rem;
    }
    
    .footer-section p {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }
    
    .footer-section ul li {
        margin-bottom: 0.5rem;
        font-size: 0.9rem;
    }
    
    .social-links a {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
    
    .footer-bottom {
        padding-top: 1rem;
    }
    
    .footer-bottom p {
        font-size: 0.8rem;
    }
    
    /* Scroll to Top */
    .scroll-top {
        width: 40px;
        height: 40px;
        bottom: 1rem;
        right: 1rem;
        font-size: 1rem;
    }
}

/* Extra Small Mobile Devices (max-width: 360px) */
@media (max-width: 360px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 0.875rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 0.875rem;
    }
    
    .logo img {
        height: 30px;
    }
    
    section {
        padding: 2.5rem 0;
    }
    
    .about-card,
    .company-info,
    .service-content,
    .portfolio-info,
    .testimonial-card,
    .contact-info,
    .contact-form-wrapper {
        padding: 1.25rem;
    }
    
    .btn {
        padding: 0.65rem 1.25rem;
        font-size: 0.9rem;
    }
}

/* Landscape Mode for Mobile */
@media (max-height: 600px) and (orientation: landscape) {
    .hero-section {
        min-height: 100vh;
        padding-top: 60px;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-buttons {
        gap: 0.75rem;
    }
    
    .scroll-indicator {
        display: none;
    }
}

/* Print Styles */
@media print {
    #header,
    .hamburger,
    .scroll-top,
    .hero-buttons,
    .scroll-indicator,
    .contact-form-wrapper,
    .social-links {
        display: none;
    }
    
    section {
        page-break-inside: avoid;
        padding: 2rem 0;
    }
    
    .hero-section {
        min-height: auto;
        padding: 3rem 0;
        background: none;
        color: var(--text-dark);
    }
    
    .hero-overlay {
        display: none;
    }
    
    a {
        color: var(--text-dark);
    }
    
    .footer {
        page-break-before: always;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --text-dark: #000000;
        --text-light: #000000;
        --border-color: #000000;
    }
    
    .btn-secondary {
        border-width: 3px;
    }
}

/* Reduced Motion Support */
@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;
    }
}