/* RESET & STRUCTURAL BASE tokens */
:root {
    --bg-main: #0b0f19;
    --bg-card: #131c2e;
    --primary: #1e3a8a;
    --primary-hover: #1e40af;
    --accent: #ea580c;
    --accent-hover: #f97316;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #1e293b;
    --whatsapp-green: #25d366;
    --whatsapp-hover: #128c7e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
}

body {
    overflow-x: hidden;
}

/* NAVBAR DESIGN */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(11, 15, 25, 0.95);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    color: var(--text-main);
    text-decoration: none;
}

.accent-text {
    color: var(--accent);
}

.nav-logo a {
    text-decoration: none;
}

.nav-menu-desktop {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--text-main);
}

.btn-nav {
    background-color: var(--accent);
    color: var(--text-main);
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.btn-nav:hover {
    background-color: var(--accent-hover);
}

/* HAMBURGER BUTTON STRUCTURE */
.hamburger-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-btn .bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-main);
    transition: all 0.3s ease;
}

/* MOBILE DROPDOWN LINKS */
.nav-menu-mobile {
    display: none;
    flex-direction: column;
    background-color: var(--bg-main);
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    gap: 1.2rem;
    text-align: center;
}

.nav-menu-mobile.active {
    display: flex;
}

.mobile-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
}

.btn-mobile-nav {
    background-color: var(--accent);
    color: var(--text-main);
    text-decoration: none;
    padding: 0.8rem;
    border-radius: 4px;
    font-weight: 600;
}

/* 1. HERO SECTION */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Unsplash background showing premium high-resolution cargo logistics port terminal setup */
    background-image: url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?q=80&w=1600');
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(11, 15, 25, 0.7), rgba(11, 15, 25, 0.9));
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 850px;
    text-align: center;
    padding: 0 2rem;
    margin-top: 60px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero-title .highlight {
    color: var(--accent);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--text-main);
    text-decoration: none;
    padding: 0.85rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    border: 1px solid var(--text-main);
    color: var(--text-main);
    text-decoration: none;
    padding: 0.85rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: var(--text-main);
    color: var(--bg-main);
}

/* 2. SERVICES SECTION */
.services-section {
    padding: 6rem 2rem;
    background-color: var(--bg-main);
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--bg-card);
    padding: 2.5rem 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.service-icon {
    font-size: 2.25rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.service-card p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 3. TRUST BAND SECTION */
.credentials-section {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 4rem 2rem;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
    margin-bottom: 3.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
}

.stat-label {
    color: var(--text-main);
    font-weight: 500;
    font-size: 1rem;
}

.compliance-logos {
    text-align: center;
}

.logos-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.logo-track {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.logo-placeholder-badge {
    border: 1px dashed var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
    background-color: rgba(11, 15, 25, 0.4);
}

/* 4. CALL TO ACTION & FORM */
.cta-section {
    padding: 6rem 2rem;
    background-color: var(--bg-main);
}

.cta-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.cta-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.cta-info p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

/* WHATSAPP CTA INTERACTIVE ELEMENT */
.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background-color: var(--whatsapp-green);
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: 6px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2);
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-whatsapp:hover {
    background-color: var(--whatsapp-hover);
    transform: translateY(-2px);
}

.cta-form-wrapper {
    background-color: var(--bg-card);
    padding: 3rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}

.form-group input,
.form-group textarea {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 0.85rem;
    border-radius: 4px;
    color: var(--text-main);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.btn-submit {
    background-color: var(--primary);
    color: var(--text-main);
    border: none;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-submit:hover {
    background-color: var(--primary-hover);
}

/* FOOTER ARCHITECTURE */
.main-footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    background-color: var(--bg-main);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--text-main);
}

/* RESPONSIVE BREAKPOINTS (MEDIA QUERIES) */
@media (max-width: 992px) {
    .cta-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
   
    .hero-title {
        font-size: 2.75rem;
    }
}

@media (max-width: 768px) {
    .nav-menu-desktop {
        display: none;
    }
   
    .hamburger-btn {
        display: flex;
    }
   
    .hero-title {
        font-size: 2.25rem;
    }
   
    .hero-subtitle {
        font-size: 1.1rem;
    }
   
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
   
    .cta-form-wrapper {
        padding: 2rem 1.5rem;
    }
   
    .footer-container {
        flex-direction: column;
        text-align: center;
    }

    /* Animated transformations for Hamburger menu icon when open */
    .hamburger-btn.open .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .hamburger-btn.open .bar:nth-child(2) {
        opacity: 0;
    }
    .hamburger-btn.open .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}