/* ================================================
   Hainan Huirui Trading Co., Ltd.
   Responsive Styles
   ================================================ */

/* Extra Large Screens */
@media (max-width: 1400px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2.4rem; }
    h3 { font-size: 1.9rem; }
    
    .hero h1 { font-size: 3.5rem; }
    
    .hero-visual {
        width: 500px;
        height: 500px;
        right: -50px;
    }
    
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
    
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: 40px;
    }
}

/* Large Tablets and Laptops */
@media (max-width: 1200px) {
    h1 { font-size: 2.6rem; }
    h2 { font-size: 2.2rem; }
    h3 { font-size: 1.6rem; }
    
    .container {
        padding: 0 30px;
    }
    
    .header-inner {
        padding-left: 30px;
        padding-right: 30px;
    }
    
    .nav-list {
        gap: 25px;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .hero-visual {
        width: 450px;
        height: 450px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .culture-values {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .app-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .app-showcase {
        order: -1;
    }
    
    .app-phone {
        width: 280px;
        height: 560px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .footer-brand {
        grid-column: span 2;
    }
}

/* Tablets */
@media (max-width: 992px) {
    h1 { font-size: 2.4rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .section {
        padding: 80px 0;
    }
    
    .nav {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding: 140px 0 80px;
    }
    
    .hero-content {
        text-align: center;
        max-width: 100%;
    }
    
    .hero h1 {
        font-size: 2.6rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-visual {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    .culture-values {
        grid-template-columns: 1fr;
        max-width: 450px;
        margin: 0 auto 80px;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        padding-left: 60px;
        gap: 0;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        text-align: left;
        grid-column: 1;
    }
    
    .timeline-dot {
        left: 20px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-brand {
        grid-column: 1;
        text-align: center;
    }
    
    .footer-brand .logo {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-column {
        text-align: center;
    }
    
    .footer-newsletter .newsletter-form {
        flex-direction: column;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .footer-legal {
        flex-direction: column;
        gap: 15px;
    }
}

/* Mobile Devices */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.3rem; }
    h4 { font-size: 1.2rem; }
    
    .container {
        padding: 0 20px;
    }
    
    .header-inner {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .logo svg {
        width: 40px;
        height: 40px;
    }
    
    .logo-text {
        font-size: 1.1rem;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-badge {
        font-size: 0.75rem;
        padding: 6px 15px;
    }
    
    .btn {
        padding: 14px 28px;
        font-size: 0.95rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 50px;
    }
    
    .service-card {
        padding: 30px 25px;
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
    }
    
    .service-icon svg {
        width: 30px;
        height: 30px;
    }
    
    .app-features {
        grid-template-columns: 1fr;
    }
    
    .app-phone {
        width: 260px;
        height: 520px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .feature-icon {
        width: 70px;
        height: 70px;
    }
    
    .feature-icon svg {
        width: 32px;
        height: 32px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2.8rem;
    }
    
    .value-card {
        padding: 35px 25px;
    }
    
    .value-icon {
        width: 80px;
        height: 80px;
    }
    
    .value-icon svg {
        width: 40px;
        height: 40px;
    }
    
    .news-image {
        height: 180px;
    }
    
    .news-content {
        padding: 20px;
    }
    
    .contact-info,
    .contact-form {
        padding: 30px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer {
        padding-top: 60px;
    }
    
    .footer-description {
        font-size: 0.9rem;
    }
    
    .page-header {
        padding: 130px 0 70px;
    }
    
    .legal-page {
        padding-top: 100px;
        padding-bottom: 60px;
    }
    
    .legal-section h2 {
        font-size: 1.4rem;
    }
    
    .legal-section h3 {
        font-size: 1.2rem;
    }
    
    .legal-section p,
    .legal-section li {
        font-size: 0.95rem;
    }
}

/* Small Mobile Devices */
@media (max-width: 480px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.2rem; }
    
    .container {
        padding: 0 15px;
    }
    
    .header-inner {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .logo svg {
        width: 35px;
        height: 35px;
    }
    
    .logo-text {
        font-size: 1rem;
    }
    
    .hero h1 {
        font-size: 1.9rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .service-card {
        padding: 25px 20px;
    }
    
    .app-phone {
        width: 240px;
        height: 480px;
    }
    
    .app-logo {
        width: 50px;
        height: 50px;
    }
    
    .app-logo svg {
        width: 28px;
        height: 28px;
    }
    
    .stat-number {
        font-size: 2.4rem;
    }
    
    .value-icon {
        width: 70px;
        height: 70px;
    }
    
    .value-icon svg {
        width: 35px;
        height: 35px;
    }
    
    .news-image {
        height: 160px;
    }
    
    .news-category {
        font-size: 0.7rem;
        padding: 4px 12px;
    }
    
    .contact-info,
    .contact-form {
        padding: 25px 20px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-icon {
        margin: 0 auto;
    }
    
    .footer-bottom {
        padding: 20px 0;
    }
    
    .footer-bottom p {
        font-size: 0.8rem;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .hero-visual,
    .btn,
    .mobile-menu {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: 60px 0;
    }
    
    .section {
        padding: 40px 0;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }
    
    a {
        text-decoration: underline;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    /* Can be customized based on needs */
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo svg,
    .service-icon svg,
    .feature-icon svg {
        transform: translateZ(0);
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn-ripple::before {
        display: none;
    }
    
    .card-hover::before {
        display: none;
    }
    
    .tooltip::after {
        display: none;
    }
    
    /* Larger touch targets */
    .nav-link {
        padding: 12px 0;
    }
    
    .service-card,
    .feature-card,
    .news-card {
        padding: 25px;
    }
}

/* Landscape Mode on Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 40px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-description {
        display: none;
    }
}

/* Status Bar Safe Area for iOS */
@supports (padding: max(0px)) {
    .header {
        padding-top: max(15px, env(safe-area-inset-top));
    }
    
    .footer {
        padding-bottom: max(25px, env(safe-area-inset-bottom));
    }
}