:root {
    --navy: #0a192f;
    --navy-light: #112240;
    --blue: #1e90ff;
    --blue-dark: #0056b3;
    --light-bg: #f4f7f6;
    --text-main: #333333;
    --text-light: #ffffff;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--light-bg);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header & Navigation */
header {
    background-color: var(--navy);
    color: var(--text-light);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-light);
    text-decoration: none;
}

.logo span {
    color: var(--blue);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    font-size: 1rem;
}

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

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
    margin: 5px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 60%, var(--blue-dark) 100%);
    color: var(--text-light);
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero h2 {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--blue);
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 30px auto;
    opacity: 0.9;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    background-color: var(--blue);
    color: var(--text-light);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: bold;
    transition: var(--transition);
    border: 2px solid var(--blue);
    margin: 5px;
}

.btn:hover {
    background-color: var(--blue-dark);
    border-color: var(--blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--text-light);
    color: var(--text-light);
}

.btn-outline:hover {
    background-color: var(--text-light);
    color: var(--navy);
}

/* Sections */
.section {
    padding: 80px 0;
}

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

.section.bg-white {
    background-color: #ffffff;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--navy);
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--blue);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* Grid Layouts */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: #fff;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
    text-align: center;
    border-top: 4px solid var(--blue);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.card i {
    font-size: 3rem;
    color: var(--blue);
    margin-bottom: 20px;
}

.card h3 {
    color: var(--navy);
    margin-bottom: 15px;
    font-size: 1.4rem;
}

/* Product Specific */
.product-card {
    text-align: left;
}

.product-card ul {
    list-style: none;
    padding: 0;
    margin-top: 15px;
}

.product-card ul li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.product-card ul li::before {
    content: '\f058';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--blue);
    position: absolute;
    left: 0;
}

/* Footer */
footer {
    background-color: var(--navy);
    color: var(--text-light);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: var(--blue);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--blue);
    padding-left: 5px;
}

.social-icons a {
    display: inline-block;
    margin-right: 15px;
    font-size: 1.5rem;
    color: #ccc;
}

.social-icons a:hover {
    color: var(--blue);
    transform: scale(1.2);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    color: #aaa;
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.contact-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
}

.contact-card i {
    font-size: 2.5rem;
    color: var(--blue);
    margin-bottom: 15px;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .nav-links {
        position: fixed;
        right: 0;
        height: 100vh;
        top: 0;
        background-color: var(--navy);
        flex-direction: column;
        align-items: center;
        width: 60%;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
        padding-top: 80px;
        z-index: 999;
    }

    .nav-links li {
        opacity: 0;
        margin: 20px 0;
    }

    .burger {
        display: block;
        z-index: 1000;
    }

    .hero h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 1.2rem;
    }
}

.nav-active {
    transform: translateX(0%);
}

@keyframes navLinkFade {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0px);
    }
}