:root {
    /* Colors */
    --color-primary: #1e3c72;
    --color-primary-light: #2a5298;
    --color-accent: #4ecdc4;
    --color-accent-dark: #44a08d;
    --color-background: #f8f9fa;
    --color-text: #333;
    --color-text-light: #666;
    --color-white: #fff;
    --color-border: #ddd;
    
    /* Typography */
    --font-family: 'Montserrat', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4.5rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --container-max-width-wide: 1500px;
    --content-max-width: 600px;
    --header-height: 80px;
    
    /* Border Radius */
    --border-radius: 8px;
    
    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.1);
    --shadow-lg: 0 6px 20px rgba(78, 205, 196, 0.4);
    --shadow-cta: 0 4px 15px rgba(78, 205, 196, 0.3);
    
    /* Transitions */
    --transition: 0.3s ease;
    
    /* Z-index */
    --z-header: 1000;
}

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

body {
    font-family: var(--font-family);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-background);
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
    width: 100%;
    padding: 0 var(--spacing-sm);
    max-width: var(--container-max-width);
    box-sizing: border-box;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: var(--spacing-sm) 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: var(--z-header);
    box-shadow: var(--shadow-sm);
    box-sizing: border-box;
    overflow-x: hidden;
}

.header-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.logo {
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    text-decoration: none;
    white-space: nowrap;
}

.phone-header {
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
}

.phone-header-img {
    height: 100px;
    max-width: 100%;
    width: auto;
}

nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
}

nav a {
    color: var(--color-white);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition);
}

nav a:hover, nav a.active {
    color: var(--color-accent);
}

/* Main Content */
main {
    margin-top: var(--header-height);
}

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

.section-alt {
    background-color: var(--color-white);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(30, 60, 114, 0.8), rgba(42, 82, 152, 0.8)), 
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%234ecdc4" width="1200" height="600"/><circle fill="%231e3c72" cx="200" cy="150" r="80" opacity="0.3"/><circle fill="%232a5298" cx="800" cy="350" r="120" opacity="0.2"/><circle fill="%2344a08d" cx="1000" cy="100" r="60" opacity="0.4"/></svg>');
    background-size: cover;
    background-position: center;
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-xxl) 0;
}

.hero h1 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    max-width: var(--content-max-width);
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-semibold);
    font-size: 1.1rem;
    transition: all var(--transition);
    box-shadow: var(--shadow-cta);
}

.cta-button:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    font-size: 2rem;
    color: var(--color-white);
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.about-text p {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.about-image {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    height: 300px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.2rem;
    text-align: center;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.contact-info h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.contact-item {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.contact-form {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
}

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

.submit-btn {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: background var(--transition);
    width: 100%;
}

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

/* Footer */
footer {
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.contact-phone-img {
    height: 100px;
    max-width: 100%;
    width: auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    text-align: center;
    gap: 5rem;
    width: 100%;
    max-width: var(--container-max-width-wide);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.footer-contact {
    font-size: 1.1rem;
}

.footer-phone-img {
    height: 100px;
    max-width: 100%;
    width: auto;
}

/* Section Headings */
.section-heading {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-heading h2 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-heading p {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* Navigation highlighting */
.nav-item {
    cursor: pointer;
}

/* Contact fast response paragraph */
.contact-fast-response {
    margin-top: var(--spacing-md);
}

/* Desktop Styles */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .header-content {
        flex-direction: row;
    }

    nav ul {
        flex-wrap: nowrap;
    }

    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-content {
        flex-direction: row;
        padding: 0 var(--spacing-lg);
    }
}