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

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

body {
    font-family: Arial, sans-serif;
    background: #000;
    color: #333;
    line-height: 1.6;
    position: relative;
}

/* Celoobrazovkový obrázek */
.fullscreen-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* Responzivní design pro mobilní zařízení */
@media (max-width: 768px) {
    .fullscreen-image {
        object-fit: contain;
        background: #000;
    }
}

@media (max-width: 480px) {
    .fullscreen-image {
        object-fit: contain;
    }
}

/* Progress bar container */
.progress-container {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    padding: 12px 20px;
    border-radius: 10px;
    z-index: 1000;
    min-width: 300px;
}

/* Progress bar */
.progress-bar {
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #00ff88, #00ccff);
    border-radius: 5px;
    width: 0%;
    transition: width 0.3s ease;
}

/* Podpora pro orientaci na mobilních zařízeních */
@media (orientation: landscape) and (max-height: 500px) {
    .fullscreen-image {
        object-fit: cover;
    }
    
    .progress-container {
        bottom: 10px;
        padding: 8px 15px;
        min-width: 200px;
    }
    
    .progress-bar {
        height: 8px;
    }
}

@media (orientation: portrait) and (max-width: 500px) {
    .fullscreen-image {
        object-fit: contain;
    }
    
    .progress-container {
        bottom: 15px;
        padding: 10px 15px;
        min-width: 250px;
    }
    
    .progress-bar {
        height: 8px;
    }
}

/* Login formulář */
.login-container {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 300px;
    width: 100%;
    margin: 50px auto;
}

.login-container h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: #007bff;
}

.login-btn {
    background: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    width: 100%;
}

.login-btn:hover {
    background: #0056b3;
}

.error-message {
    background: #dc3545;
    color: white;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

/* Responzivní design */
@media (max-width: 480px) {
    .login-container {
        margin: 20px;
        padding: 20px;
    }
}