:root {
   
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;      
    --text-main: #1A202C;       
    --text-muted: #4A5568;       
    
    --brand-primary: #0A2540;     
    --brand-accent: #E2E8F0;
    --cta-color: #0066FF;         
    --cta-hover: #0052CC;

    
    --font-base: 'Inter', sans-serif;
    --text-sm: clamp(0.875rem, 0.8vw, 1rem);
    --text-md: clamp(1rem, 1vw, 1.125rem);
    --text-lg: clamp(1.25rem, 1.5vw, 1.5rem);
    --text-xl: clamp(2rem, 3vw, 3rem);

  
    --container-width: 1200px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
}


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

body {
    font-family: var(--font-base);
    color: var(--text-main);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased; 
}


.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000; 
    padding: var(--spacing-md) 0;
    transition: all 0.3s ease-in-out; 
    background-color: transparent; 
}


#main-header.scrolled {
    background-color: var(--brand-primary); 
    padding: var(--spacing-sm) 0; 
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--bg-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.brand-logo .dot {
    color: var(--cta-color); 
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--bg-primary);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 600;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--cta-color);
}


.btn-primary {
    background-color: var(--cta-color);
    color: var(--bg-primary);
    padding: 0.6rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: var(--text-sm);
    transition: background-color 0.2s ease;
}

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


.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem; 
    
}

.brand-icon {
    width: 28px;
    height: 28px;
    color: var(--cta-color); 
}


.hero {
    height: 100vh; 
    min-height: 600px;
    display: flex;
    align-items: center; 
    background-image: linear-gradient(
        to right, 
        rgba(10, 37, 64, 0.9) 0%,   
        rgba(10, 37, 64, 0.4) 100%  
    ), url('../assets/images/hero-bg.jpg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    margin-top: 0; /
}

.hero-content {
    max-width: 650px;
    margin: 0; 
}

.hero h1 {
    font-size: var(--text-xl);
    color: var(--bg-primary);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero h1 .highlight {
    color: var(--cta-color);
}

.hero p {
    font-size: var(--text-lg);
    color: var(--brand-accent);
    margin-bottom: var(--spacing-lg);
    max-width: 90%;
}


.tracking-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px); 
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

#tracking-form {
    display: flex;
    gap: var(--spacing-sm);
}

#tracking-form input {
    flex: 1; 
    padding: 1rem;
    border: none;
    border-radius: 4px;
    font-size: var(--text-md);
    font-family: var(--font-base);
    outline: none;
}

#tracking-form input:focus {
    box-shadow: 0 0 0 2px var(--cta-color);
}

#tracking-form .btn-primary {
    padding: 1rem 2rem;
    font-size: var(--text-md);
    border: none;
    cursor: pointer;
}

.tracking-status {
    margin-top: var(--spacing-sm);
    font-size: var(--text-sm);
    color: var(--bg-primary);
    display: none; 
}

.section-padding {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: var(--text-xl);
    color: var(--brand-primary);
    margin-bottom: var(--spacing-sm);
}

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


.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}


.service-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--brand-accent);
    border-radius: 8px;
    overflow: hidden; 
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.service-card:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-5px); 
}


.card-image-wrapper {
    width: 100%;
    height: 240px;
    overflow: hidden;
}

.service-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.5s ease, transform 0.5s ease;
}

.service-card:hover .service-image {
    filter: grayscale(0%); 
    transform: scale(1.05); 
}

.card-content {
    padding: var(--spacing-lg);
}

.service-icon {
    width: 32px;
    height: 32px;
    color: var(--cta-color);
    margin-bottom: var(--spacing-md);
}

.card-content h3 {
    font-size: var(--text-lg);
    color: var(--brand-primary);
    margin-bottom: var(--spacing-sm);
}

.card-content p {
    color: var(--text-muted);
    font-size: var(--text-sm);
    line-height: 1.7;
}


.calculator-section {
    background-color: var(--bg-secondary);
}

.calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.calculator-content h2 {
    font-size: var(--text-xl);
    color: var(--brand-primary);
    margin-bottom: var(--spacing-sm);
}

.calculator-content p {
    font-size: var(--text-md);
    color: var(--text-muted);
}

.calculator-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: var(--spacing-sm);
}

input[type="number"], select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--brand-accent);
    border-radius: 4px;
    font-family: var(--font-base);
    font-size: var(--text-md);
    transition: border-color 0.2s ease;
}

input[type="number"]:focus, select:focus {
    outline: none;
    border-color: var(--cta-color);
    box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.1);
}

.btn-full {
    width: 100%;
    margin-top: var(--spacing-sm);
}


.quote-result {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--brand-accent);
    display: none; 
    text-align: center;
}

.quote-result span {
    font-size: var(--text-sm);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.quote-result h3 {
    font-size: var(--text-xl);
    color: var(--cta-color);
    margin-top: var(--spacing-sm);
}


@media (max-width: 768px) {
    .calculator-wrapper {
        grid-template-columns: 1fr; 
    }
}

.metrics {
    background-color: var(--brand-primary);
    color: var(--bg-primary);
    text-align: center;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.metric-card h2 {
    font-size: var(--text-xl);
    color: var(--cta-color);
    margin-bottom: var(--spacing-sm);
}

.metric-card p {
    font-size: var(--text-md);
    color: var(--brand-accent);
    font-weight: 600;
}



.site-footer {
    background-color: #051626; 
    color: var(--bg-secondary);
    padding: var(--spacing-xl) 0 var(--spacing-md) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-brand h2 {
    color: var(--bg-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-brand .dot {
    color: var(--cta-color);
}

.footer-brand p {
    color: var(--text-muted);
    max-width: 300px;
}

.footer-links h3 {
    color: var(--bg-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--text-md);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    color: var(--text-muted);
    font-size: var(--text-sm);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}


.hamburger {
    display: none;
    cursor: pointer;
    gap: 5px;
    flex-direction: column;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--bg-primary);
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
   
    .hamburger { display: flex; }
    .desktop-nav { display: none; }
    .desktop-nav.active {
        display: block;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--brand-primary);
        padding: var(--spacing-md) 0;
        text-align: center;
    }
    .nav-links { flex-direction: column; gap: var(--spacing-md); }
    .btn-primary { display: none; }

   
    .calculator-wrapper {
        grid-template-columns: 1fr;
    }

   
    .footer-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    
    .hamburger { display: flex; }
    .desktop-nav { display: none; }
    .desktop-nav.active {
        display: block;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--brand-primary);
        padding: var(--spacing-md) 0;
        text-align: center;
    }
    .nav-links { flex-direction: column; gap: var(--spacing-md); }
    .btn-primary { display: none; }

   
    .calculator-wrapper {
        grid-template-columns: 1fr;
    }

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