:root {
    /* Color palette based on graphical profile */
    --primary-blue: #0056B3;
    --primary-navy: #1A2C42;
    --accent-yellow: #FFC107;
    --neutral-grey: #343A40;
    --white: #FFFFFF;
    --light-grey: #F8F9FA;
}

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

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    color: var(--neutral-grey);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    color: var(--primary-navy);
}

/* Header and Navigation */
.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.375rem 5%;
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.logo-container {
    max-width: 100px;
}

.logo {
    width: 100%;
    height: auto;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--primary-navy);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.language-switch {
    background: none;
    border: 1px solid var(--primary-blue);
    color: var(--primary-blue);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.language-switch:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-navy);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* Hero Section */
#hero {
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('../images/hero/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding: 0 1rem;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--accent-yellow);
    color: var(--primary-navy);
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

/* Services Section */
#tjanster {
    padding: 5rem 5%;
    background-color: var(--light-grey);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.service-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.service-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 1rem;
}

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

/* About Section */
#om-oss {
    padding: 5rem 5%;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-image {
    width: 100%;
    max-width: 600px;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Contact Section */
#kontakt {
    padding: 5rem 5%;
    background-color: var(--light-grey);
}

.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

#contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#contact-form input,
#contact-form textarea {
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
}

#contact-form textarea {
    min-height: 150px;
}

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

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

/* Footer */
footer {
    background-color: var(--primary-navy);
    color: var(--white);
    padding: 3rem 5% 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* References Section */
.references-section {
    padding: 5rem 5%;
    background-color: var(--light-grey);
}

.references-intro {
    max-width: 800px;
    margin: 2rem auto;
    text-align: center;
}

.references-intro h3 {
    color: var(--primary-navy);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.references-intro p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--neutral-grey);
}

.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.reference-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.reference-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 1rem;
}

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

.reference-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-navy);
}

.reference-card p {
    color: var(--neutral-grey);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-nav {
        padding: 0.25rem 5%;
    }
    
    .logo-container {
        max-width: 75px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

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

    .hero-content p {
        font-size: 1rem;
    }
}