/* =========================================

   1. BASIC SETTINGS

   ========================================= */

:root {

    --primary-color: #0066cc;

    --primary-dark: #004c99;

    --text-color: #333333;

    --bg-light: #f4f7f6;

    --white: #ffffff;

    --border-radius: 4px;

}



* {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

}



html {

    scroll-behavior: smooth;

}



body {

    font-family: 'Roboto', sans-serif;

    line-height: 1.6;

    color: var(--text-color);

    background-color: var(--white);

}



/* =========================================

   2. HELPER CLASSES

   ========================================= */

.container {

    max-width: 1100px;

    margin: 0 auto;

    padding: 0 20px;

}



.section {

    padding: 80px 0;

}



.bg-light {

    background-color: var(--bg-light);

}



h1, h2, h3 {

    margin-bottom: 20px;

    font-weight: 700;

    line-height: 1.2;

}



h2 {

    font-size: 2.5rem;

    text-align: center;

    color: var(--primary-color);

    margin-bottom: 40px;

    text-transform: uppercase;

    letter-spacing: 1px;

}



p {

    margin-bottom: 15px;

}



.btn {

    display: inline-block;

    background-color: var(--primary-color);

    color: var(--white);

    padding: 12px 30px;

    text-decoration: none;

    border-radius: var(--border-radius);

    font-weight: bold;

    transition: background-color 0.3s;

    text-transform: uppercase;

}



.btn:hover {

    background-color: var(--primary-dark);

}



.section-subtitle {

    text-align: center;

    margin-top: -30px;

    margin-bottom: 50px;

    color: #666;

    font-size: 1.1rem;

}



/* =========================================

   3. HEADER AND MENU

   ========================================= */

.header {

    background-color: var(--white);

    box-shadow: 0 2px 10px rgba(0,0,0,0.1);

    position: fixed;

    width: 100%;

    top: 0;

    z-index: 1000;

}



.header-content {

    display: flex;

    justify-content: space-between;

    align-items: center;

    height: 80px;

}



.logo {

    font-size: 1.5rem;

    font-weight: 700;

    color: var(--primary-color);

    text-transform: uppercase;

    display: flex; 

    align-items: center;

    margin-left: -140px; 

}



.logo img {

    max-height: 60px;

    width: auto;

}



.nav {

    margin-right: -140px;

}



.nav ul {

    list-style: none;

    display: flex;

}



.nav ul li {

    margin-left: 30px;

}



.nav ul li a {

    text-decoration: none;

    color: var(--text-color);

    font-weight: 500;

    transition: color 0.3s;

    text-transform: uppercase;

    font-size: 0.9rem;

}



.nav ul li a:hover {

    color: var(--primary-color);

}



/* =========================================

   4. HERO SECTION

   ========================================= */

.hero {

    background-image: url('img/uvod.jpg');

    background-size: cover;

    background-position: center;

    height: 100vh;

    display: flex;

    align-items: center;

    justify-content: center;

    text-align: center;

    color: var(--white);

    position: relative;

    margin-top: 0;

}



.hero-overlay {

    position: absolute;

    top: 0;

    left: 0;

    width: 100%;

    height: 100%;

    background: rgba(0, 0, 0, 0.6); 

}



.hero-content {

    position: relative;

    z-index: 1;

    max-width: 800px;

}



.hero h1 {

    font-size: 3.5rem;

    margin-bottom: 20px;

    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);

    color: var(--white);

}



.hero p {

    font-size: 1.2rem;

    margin-bottom: 30px;

    color: #f0f0f0;

}



/* =========================================

   5. ABOUT US

   ========================================= */

.about-text {

    max-width: 800px;

    margin: 0 auto;

    text-align: center;

    font-size: 1.1rem;

    color: #555;

}



/* =========================================

   6. PARALLAX BREAKS

   ========================================= */

.photo-break {

    height: 400px;

    background-attachment: fixed;

    background-position: center;

    background-size: cover;

    background-repeat: no-repeat;

    position: relative;

}



.break-1 {

    background-image: url('img/predel1.jpg');

}



.break-2 {

    background-image: url('img/predel2.jpg');

}



.overlay-light {

    position: absolute;

    top: 0; left: 0; width: 100%; height: 100%;

    background: rgba(0, 50, 100, 0.3);

}



/* =========================================

   7. SERVICES

   ========================================= */

.services-grid {

    display: grid;

    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));

    gap: 30px;

}



.service-card {

    background: var(--white);

    padding: 40px;

    text-align: center;

    border-radius: var(--border-radius);

    box-shadow: 0 5px 15px rgba(0,0,0,0.05);

    transition: transform 0.3s;

    border-bottom: 3px solid var(--primary-color);

}



.service-card:hover {

    transform: translateY(-5px);

}



.service-card h3 {

    color: var(--primary-color);

    margin-bottom: 15px;

}



/* =========================================

   8. GALLERY

   ========================================= */

.gallery-grid {

    display: grid;

    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));

    gap: 20px; 

}



.gallery-item {

    display: block;

    height: 300px;

    overflow: hidden;

    border-radius: var(--border-radius);

    box-shadow: 0 4px 6px rgba(0,0,0,0.1);

}



.gallery-item img {

    width: 100%;

    height: 100%;

    object-fit: cover; 

    transition: transform 0.5s ease;

}



.gallery-item:hover img {

    transform: scale(1.1);

}



/* =========================================

   9. FOOTER

   ========================================= */

.footer {

    background-color: #222;

    color: #fff;

    padding: 60px 0 20px;

    text-align: center;

}



.footer h2 {

    color: var(--white);

    border-bottom: 2px solid var(--primary-color);

    display: inline-block;

    padding-bottom: 10px;

}



.footer address {

    font-style: normal;

    margin-top: 20px;

    line-height: 2;

}



.footer a {

    color: var(--primary-color);

    text-decoration: none;

    font-weight: bold;

}



.footer-bottom {

    margin-top: 40px;

    padding-top: 20px;

    border-top: 1px solid #444;

    font-size: 0.8rem;

    color: #888;

}



/* =========================================

   10. MOBILE VERSION

   ========================================= */

@media (max-width: 768px) {

    .header-content {

        flex-direction: column;

        height: auto;

        padding: 10px 0;

    }



    .logo {

        margin-left: 0;

        margin-bottom: 5px;

        justify-content: center;

    }



    .logo img {

        max-height: 45px;

    }



    .nav {

        margin-right: 0;

        width: 100%;

    }



    .nav ul {

        display: flex;

        flex-direction: row;

        flex-wrap: wrap;

        justify-content: center;

        margin-top: 5px;

        padding: 0;

    }



    .nav ul li {

        margin: 5px 10px;

    }



    .nav ul li a {

        font-size: 0.85rem;

        display: inline-block;

        padding: 5px;

    }



    .hero h1 {

        font-size: 2.2rem;

    }

    

    .section {

        padding: 50px 0;

    }



    .hero, .photo-break, .break-1, .break-2 {

        background-attachment: scroll !important;

        background-position: center center !important;

        background-size: cover !important;

    }

}