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

/* Fullscreen styl */
body {
    font-family: "Segoe UI", Arial, sans-serif;
    background: linear-gradient(135deg,  #080f17);
    color: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
}

/* Cover blok */
.cover {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    animation: fadeIn 2s ease-in;
}

/* Logo */
.logo {
    max-width: 960px;
    height: auto;
    filter: drop-shadow(0 0 15px rgba(0,0,0,0.7));
}

/* Text */
h1 {
    font-size: 3rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

p {
    font-size: 1.3rem;
    opacity: 0.8;
    margin-bottom: 15px;
}

/* Tlačítko */
.btn {
    padding: 12px 32px;
    font-size: 1.2rem;
    text-decoration: none;
    color: #fff;
    border: 2px solid #f5f5f5;
    border-radius: 50px;
    transition: 0.3s;
}

.btn:hover {
    background: #f5f5f5;
    color: #0a0a0a;
    box-shadow: 0 0 20px rgba(255,255,255,0.3);
}

/* Animace */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}