/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    flex-wrap: wrap;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    height: 40px;
    width: auto;
}

.company-name {
    font-weight: 700;
    font-size: 18px;
    color: #2d7a6b;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover {
    color: #2d7a6b;
}

.language-switcher {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.lang-btn {
    background: rgba(45, 122, 107, 0.1);
    border: 1px solid rgba(45, 122, 107, 0.3);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    color: #2d7a6b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.lang-btn.active {
    background: #2d7a6b;
    color: white;
    border-color: #2d7a6b;
    box-shadow: 0 2px 8px rgba(45, 122, 107, 0.3);
}

.lang-btn:hover:not(.active) {
    background: rgba(45, 122, 107, 0.2);
    border-color: rgba(45, 122, 107, 0.5);
    transform: translateY(-1px);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    gap: 4px;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background: #2d7a6b;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero {
    margin-top: 70px;
    min-height: 80vh;
    background: linear-gradient(135deg, #f8fffe 0%, #e8f5f3 100%);
    padding: 80px 0;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: #2d7a6b;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: #2d7a6b;
    color: white;
}

.btn-primary:hover {
    background: #245a4f;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #2d7a6b;
    border: 2px solid #2d7a6b;
}

.btn-secondary:hover {
    background: #2d7a6b;
    color: white;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-svg {
    width: 100%;
    max-width: 500px;
    height: auto;
}

/* Services Section */
.services {
    padding: 80px 0;
    background: #fff;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d7a6b;
    margin-bottom: 50px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.service-card {
    background: #f8fffe;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #e8f5f3;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(45, 122, 107, 0.1);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d7a6b;
    margin-bottom: 15px;
}

.service-card p {
    color: #666;
    line-height: 1.6;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
    background: #f8fffe;
    border: 1px solid #e8f5f3;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(45, 122, 107, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d7a6b;
    margin-bottom: 15px;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
}

/* Network Map Section */
.network-map {
    padding: 80px 0;
    background: linear-gradient(135deg, #e8f5f3 0%, #f8fffe 100%);
}

.map-container {
    position: relative;
    text-align: center;
}

.network-svg {
    width: 100%;
    max-width: 600px;
    height: auto;
    margin-bottom: 40px;
}

.network-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.network-stat {
    text-align: center;
}

.network-stat .stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: #2d7a6b;
}

.network-stat .stat-label {
    font-size: 0.9rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Solutions Section */
.solutions {
    padding: 80px 0;
    background: #fff;
}

.solutions-tabs {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    border: 2px solid #2d7a6b;
    background: transparent;
    color: #2d7a6b;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.tab-btn.active,
.tab-btn:hover {
    background: #2d7a6b;
    color: white;
}

.tab-content {
    min-height: 400px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.solution-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: center;
}

.solution-text h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #2d7a6b;
    margin-bottom: 20px;
}

.solution-text p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 25px;
}

.solution-text ul {
    list-style: none;
    padding: 0;
}

.solution-text li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 25px;
}

.solution-text li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #2d7a6b;
    font-weight: bold;
}

.solution-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.import-export-visual,
.customs-visual,
.supply-chain-visual,
.ecommerce-visual {
    font-size: 4rem;
    padding: 40px;
    background: linear-gradient(135deg, #f8fffe 0%, #e8f5f3 100%);
    border-radius: 20px;
    border: 2px solid #2d7a6b;
}

/* About Section */
.about {
    padding: 80px 0;
    background: linear-gradient(135deg, #e8f5f3 0%, #f8fffe 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.about-text h2 {
    text-align: left;
    margin-bottom: 30px;
}

.about-desc {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.7;
}

.stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d7a6b;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-network-img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 12px;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: #fff;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 30px;
}

.contact-icon {
    font-size: 1.5rem;
    margin-top: 5px;
}

.contact-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2d7a6b;
    margin-bottom: 5px;
}

.contact-item p {
    color: #666;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-form input,
.contact-form textarea {
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #2d7a6b;
    box-shadow: 0 0 0 2px rgba(45, 122, 107, 0.2);
}

.contact-form input:invalid,
.contact-form textarea:invalid {
    border-color: #ff6b6b;
}

.contact-form input:valid,
.contact-form textarea:valid {
    border-color: #2d7a6b;
}

.contact-form button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.form-success {
    background: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border: 1px solid #c3e6cb;
}

.form-error {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border: 1px solid #f5c6cb;
}

.contact-form textarea {
    min-height: 120px;
    resize: vertical;
}

/* Footer */
.footer {
    background: #2d7a6b;
    color: white;
    padding: 40px 0 20px;
}

.footer-content {
    text-align: center;
    margin-bottom: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 15px;
}

.footer-logo .company-name {
    color: white;
}

.footer-text {
    color: #b8d4cf;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #4a9b8a;
    color: #b8d4cf;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Mobile Navigation */
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-container {
        position: relative;
        height: 70px;
        padding: 0 20px;
        flex-wrap: wrap;
    }
    
    .nav-logo {
        flex: 1;
        min-width: 200px;
    }
    
    .language-switcher {
        display: flex;
        gap: 6px;
        flex-wrap: wrap;
        justify-content: flex-end;
        align-items: center;
        margin-left: auto;
        margin-right: 10px;
    }
    
    .lang-btn {
        padding: 4px 8px;
        font-size: 11px;
        min-width: 35px;
        border-radius: 6px;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 25px 20px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
        border-radius: 0 0 12px 12px;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid #f0f0f0;
        text-align: center;
        font-size: 16px;
        font-weight: 500;
        transition: color 0.3s ease;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .nav-link:hover {
        color: #2d7a6b;
        background-color: rgba(45, 122, 107, 0.05);
    }
    
    /* Hero Section Mobile */
    .hero {
        margin-top: 70px;
        padding: 60px 0;
        min-height: 70vh;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.1;
        margin-bottom: 20px;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 30px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        padding: 15px 20px;
        font-size: 16px;
    }
    
    /* Services Mobile */
    .services {
        padding: 60px 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 0 20px;
    }
    
    .service-card {
        padding: 30px 25px;
    }
    
    /* Features Mobile */
    .features {
        padding: 60px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 0 20px;
    }
    
    .feature-item {
        padding: 30px 25px;
    }
    
    /* Network Map Mobile */
    .network-map {
        padding: 60px 0;
    }
    
    .network-stats {
        gap: 40px;
        flex-direction: column;
        align-items: center;
    }
    
    .network-stat .stat-number {
        font-size: 2.5rem;
    }
    
    /* Solutions Mobile */
    .solutions {
        padding: 60px 0;
    }
    
    .tab-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        padding: 0 20px;
    }
    
    .tab-btn {
        width: 100%;
        max-width: 280px;
        padding: 15px 20px;
        font-size: 16px;
    }
    
    .solution-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
        padding: 0 20px;
    }
    
    .solution-text h3 {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }
    
    .solution-text p {
        font-size: 1rem;
        margin-bottom: 25px;
    }
    
    .solution-text ul {
        text-align: left;
        max-width: 350px;
        margin: 0 auto;
    }
    
    .import-export-visual,
    .customs-visual,
    .supply-chain-visual,
    .ecommerce-visual {
        font-size: 3rem;
        padding: 30px;
        margin: 0 auto;
        max-width: 250px;
    }
    
    /* About Mobile */
    .about {
        padding: 60px 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 0 20px;
    }
    
    .about-text h2 {
        text-align: center;
        font-size: 2.2rem;
    }
    
    .about-desc {
        font-size: 1rem;
        text-align: center;
    }
    
    .stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2.2rem;
    }
    
    /* Contact Mobile */
    .contact {
        padding: 60px 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 0 20px;
    }
    
    .contact-item {
        justify-content: center;
        text-align: center;
        flex-direction: column;
        gap: 10px;
    }
    
    .contact-form {
        gap: 20px;
    }
    
    .contact-form input,
    .contact-form textarea {
        padding: 15px;
        font-size: 16px;
    }
    
    /* Footer Mobile */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        padding: 0 20px;
    }
    
    .footer-logo {
        flex-direction: column;
        gap: 10px;
    }
    
    .company-name {
        font-size: 16px;
    }
    
    /* Section Titles Mobile */
    .section-title {
        font-size: 2.2rem;
        margin-bottom: 40px;
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 15px;
        height: 65px;
    }
    
    .nav-logo {
        min-width: 180px;
    }
    
    .company-name {
        font-size: 14px;
    }
    
    .logo {
        height: 35px;
    }
    
    .language-switcher {
        gap: 4px;
        margin-right: 5px;
    }
    
    .lang-btn {
        padding: 3px 6px;
        font-size: 10px;
        min-width: 30px;
    }
    
    .mobile-menu-btn {
        padding: 6px;
    }
    
    .hamburger-line {
        width: 20px;
        height: 2px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .service-card,
    .feature-item {
        padding: 25px 20px;
    }
    
    .solution-text h3 {
        font-size: 1.5rem;
    }
    
    .network-stat .stat-number {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
}

@media (max-width: 360px) {
    .nav-container {
        padding: 0 10px;
        height: 60px;
    }
    
    .nav-logo {
        min-width: 160px;
    }
    
    .company-name {
        font-size: 12px;
    }
    
    .logo {
        height: 30px;
    }
    
    .language-switcher {
        gap: 3px;
        margin-right: 3px;
    }
    
    .lang-btn {
        padding: 2px 4px;
        font-size: 9px;
        min-width: 26px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 12px 16px;
        font-size: 14px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Animation */
.loading {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Success Modal */
.success-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.success-modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.success-modal {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.8) translateY(20px);
    transition: all 0.3s ease;
}

.success-modal-overlay.show .success-modal {
    transform: scale(1) translateY(0);
}

.success-icon {
    margin: 0 auto 25px;
    animation: successPulse 0.6s ease-out;
}

@keyframes successPulse {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.success-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2d7a6b;
    margin-bottom: 10px;
}

.success-subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 15px;
    font-weight: 500;
}

.success-description {
    font-size: 1rem;
    color: #888;
    line-height: 1.6;
    margin-bottom: 30px;
}

.success-actions {
    display: flex;
    justify-content: center;
}

.success-btn {
    background: linear-gradient(135deg, #2d7a6b 0%, #245a4f 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(45, 122, 107, 0.3);
}

.success-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(45, 122, 107, 0.4);
}

.success-btn:active {
    transform: translateY(0);
}

/* Mobile Success Modal */
@media (max-width: 768px) {
    .success-modal {
        padding: 30px 25px;
        margin: 20px;
    }
    
    .success-title {
        font-size: 1.5rem;
    }
    
    .success-subtitle {
        font-size: 1rem;
    }
    
    .success-description {
        font-size: 0.9rem;
    }
    
    .success-btn {
        padding: 14px 35px;
        font-size: 15px;
    }
}