/* --- Základní nastavení a proměnné --- */
:root {
    --primary-color: #003366; /* Tmavě modrá */
    --secondary-color: #e60000; /* Jablotron Červená */
    --secondary-hover: #cc0000; /* Tmavší červená pro hover */
    --text-dark: #1a1a1a;
    --text-light: #f4f4f4;
    --gray-bg: #f9f9f9;
    --transition: all 0.3s ease;
    --font-main: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #fff;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

h1, h2, h3 {
    margin-bottom: 15px;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
}

.section-header p {
    text-align: center;
    color: #666;
    margin-bottom: 50px;
    font-size: 1.1rem;
}

.text-left { text-align: left; }
.text-white { color: #fff !important; }
.text-gray { color: #ccc !important; }

/* Tlačítka */
.btn-primary {
    background-color: var(--secondary-color);
    color: #fff;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(230, 0, 0, 0.3);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid #fff;
    color: #fff;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.btn-secondary:hover {
    background-color: #fff;
    color: var(--primary-color);
}

header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 80px;
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

nav {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover:not(.btn-primary) {
    color: var(--secondary-color);
}

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

.burger div {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 5px;
    transition: var(--transition);
}

.mobile-menu-logo {
    display: none;
    height: 40px;
    width: auto;
    margin-right: 15px;
}
.hero {
    height: calc(100vh - 80px); 
    
    background-image: url('https://images.unsplash.com/photo-1558002038-1091a1661116?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80'); 
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    text-align: center;
    color: #fff;
    
    margin-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 51, 102, 0.9) 0%, rgba(0, 51, 102, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    width: 100%; /* Důležité pro centrování na mobilu */
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
}

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

.service-card {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
    border-bottom: 3px solid transparent;
    border-top: 1px solid #eee;
}

.service-card:hover {
    transform: translateY(-5px);
    border-bottom: 3px solid var(--secondary-color);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.service-card .icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
    display: block;
}

/* --- Terminály Intro --- */
.terminal-intro {
    max-width: 800px;
    margin: 0 auto 50px auto;
    text-align: center;
}

.terminal-intro h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
}

/* --- Pozadí --- */
.bg-light { background-color: var(--gray-bg); }
.bg-dark { background-color: var(--primary-color); color: #fff; }

/* --- Kontakt --- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    background: #fff;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    border-radius: 10px;
    padding: 40px;
    color: var(--text-dark);
}

.info-item {
    margin-bottom: 30px;
    text-align: center;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.form-group { margin-bottom: 20px; }

.form-group input, 
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    background-color: #f8f8f8;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.full-width { width: 100%; }

/* --- Footer --- */
footer {
    background-color: #002244;
    color: #fff;
    padding: 30px 0;
    text-align: center;
    border-top: 3px solid var(--secondary-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo-img {
    height: 40px;
    width: auto;
    display: block;
}

/* --- RESPONSIVITA (MOBIL) --- */
@media screen and (max-width: 768px) {
    /* Menu vyjíždějící z boku */
    .nav-links {
        position: fixed; /* Musí být fixed, aby plavalo nad obsahem */
        right: 0px;
        height: 92vh; /* Výška zbytku obrazovky */
        top: 80px; /* Výška headeru */
        background-color: #fff;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start; /* Položky odshora */
        width: 70%; /* Šířka menu na mobilu */
        transform: translateX(100%); /* Schované vpravo */
        transition: transform 0.5s ease-in;
        padding-top: 50px;
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
    }

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

    /* Zobrazení burger menu */
    .burger {
        display: block;
    }

    /* Zobrazení loga vedle burger menu */
    .mobile-menu-logo {
        display: block;
    }

    /* Třída pro otevřené menu (přidává ji Javascript) */
    .nav-active {
        transform: translateX(0%);
    }

    /* Hero sekce - tlačítka pod sebe */
    .hero-btns {
        flex-direction: column;
        width: 100%;
        padding: 0 10px;
        gap: 15px;
    }

    .hero-btns a {
        width: 100%;
        text-align: center;
        display: block;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    /* Kontakt - pod sebe */
    .contact-wrapper {
        grid-template-columns: 1fr;
        padding: 20px;
    }
    
    /* Footer - pod sebe */
    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    /* ANIMACE BURGERU NA KŘÍŽEK */
    /* Třídu .toggle přidává Javascript při kliknutí */
    .toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    .toggle .line2 {
        opacity: 0;
    }
    .toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}

/* Animace příletu odkazů */
@keyframes navLinkFade {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}