:root {
    --bg: #121212;
    --card-bg: #1e1e1e;
    --text: #e0e0e0;
    --accent: #d4af37; /* Stoická zlatá */
    --nav-bg: #000000;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    line-height: 1.6;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: var(--nav-bg);
    border-bottom: 1px solid #333;
}

nav .logo { font-size: 1.5rem; font-weight: bold; color: var(--accent); letter-spacing: 2px; }
nav ul { display: flex; list-style: none; margin: 0; padding: 0; }
nav ul li { margin-left: 20px; }
nav ul li a { color: var(--text); text-decoration: none; font-weight: 500; transition: 0.3s; }
nav ul li a:hover { color: var(--accent); }

header {
    text-align: center;
    padding: 6rem 1rem;
    background: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.8));
}

header h1 { font-size: 3rem; margin-bottom: 0.5rem; color: #fff; }
header p { font-size: 1.2rem; opacity: 0.8; max-width: 700px; margin: 0 auto; }

main { padding: 3rem 5%; max-width: 1200px; margin: 0 auto; min-height: 70vh; }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #333;
    transition: 0.3s;
}

.card:hover { border-color: var(--accent); transform: translateY(-5px); }
.card .icon { font-size: 3.5rem; margin-bottom: 1rem; }
.card h3 { color: var(--accent); margin-bottom: 1rem; }

.btn {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.7rem 2rem;
    background: var(--accent);
    color: #000;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: 0.3s;
}

.btn:hover { background: #fff; }

.content-page { max-width: 800px; margin: 0 auto; }
.contact-box { background: var(--card-bg); padding: 2rem; border-radius: 10px; margin-top: 2rem; border-left: 5px solid var(--accent); }

footer { text-align: center; padding: 3rem; font-size: 0.9rem; opacity: 0.5; border-top: 1px solid #333; }