/* --- Základní nastavení a proměnné --- */
:root {
    --color-white: #ffffff;
    --color-bg-light: #f4f8fb;
    /* Velmi světlá modrá */
    --color-blue-light: #3498db;
    /* Akcentní světlá modrá */
    --color-blue-dark: #0c2444;
    /* Tmavá korporátní modrá */
    --color-text-gray: #4a5568;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--color-blue-dark);
    background-color: var(--color-white);
}

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

.section {
    padding: 80px 0;
}

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

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

.bg-dark {
    background-color: var(--color-blue-dark);
    color: var(--color-white);
}

/* --- Navigace --- */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    height: 70px;
    display: flex;
    align-items: center;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-blue-dark);
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-blue-dark);
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-nav {
    background: var(--color-blue-dark);
    color: white !important;
    padding: 8px 20px;
    border-radius: 4px;
}

.btn-nav:hover {
    background: var(--color-blue-light);
}

/* Burger Menu (Mobile) */
.burger {
    display: none;
    cursor: pointer;
}

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

/* --- Hero Sekce --- */
.hero {
    height: 100vh;
    /* Přes celou výšku okna */
    width: 100%;
    background: linear-gradient(135deg, var(--color-blue-dark) 0%, #1a3c6b 100%);
    position: relative;
    display: flex;
    align-items: center;
    color: white;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: 3rem;
    /* Velké na desktopu */
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-sub {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* Tlačítka */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    margin: 5px;
}

.btn-primary {
    background-color: var(--color-blue-light);
    color: white;
    border: 2px solid var(--color-blue-light);
}

.btn-primary:hover {
    background-color: transparent;
    border-color: white;
}

.btn-outline {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline:hover {
    background-color: white;
    color: var(--color-blue-dark);
}

/* --- Sekce O nás --- */
.split-layout {
    display: flex;
    align-items: center;
    gap: 50px;
}

.text-content,
.visual-content {
    flex: 1;
}

.features-list {
    list-style: none;
    margin-top: 20px;
}

.features-list li {
    margin-bottom: 10px;
    font-weight: 600;
}

.placeholder-box {
    width: 100%;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-blue-light);
    border-radius: 10px;
}

/* Obrázek uvnitř placeholder-box */
.placeholder-box img {
    max-width: 540px;
    border-radius: 10px;
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    object-fit: contain;
}
}

/* --- Služby --- */
.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.2rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border-top: 4px solid var(--color-blue-light);
    transition: var(--transition);
}

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

.card h3 {
    margin-bottom: 15px;
    color: var(--color-blue-dark);
}

.card p {
    color: var(--color-text-gray);
}

/* --- Kontakt --- */
.contact-wrapper {
    display: flex;
    gap: 50px;
    flex-wrap: wrap;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    background: white;
    padding: 30px;
    border-radius: 8px;
    color: var(--color-blue-dark);
}

.info-item {
    margin: 20px 0;
    font-size: 1.1rem;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
}

.full-width {
    width: 100%;
    border: none;
    cursor: pointer;
}

/* --- Footer --- */
footer {
    background: #081a33;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
}

/* --- Responzivita (Mobil) --- */
@media screen and (max-width: 768px) {
    .nav-links {
        position: absolute;
        right: 0px;
        height: 92vh;
        top: 8vh;
        background-color: white;
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 60%;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        padding-top: 50px;
    }

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

    .burger {
        display: block;
    }

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

    .split-layout {
        flex-direction: column;
    }

    .contact-wrapper {
        flex-direction: column;
    }
}