body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #000033;
    margin: 0;
}

.container {
    background: yellow;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    max-width: 450px;
    width: 100%;
    text-align: center;
}

h1 {
    color: #333;
    margin-bottom: 25px;
}

/* Skrytie obrazoviek */
.screen {
    display: none;
}
.screen.active {
    display: block;
}

/* ÚVODNÁ OBRAZOVKA */
.mode-button {
    display: block;
    width: 100%;
    padding: 15px;
    margin-bottom: 15px;
    font-size: 1.1em;
    font-weight: bold;
    color: white;
    background-color: #007bff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}
.mode-button:hover {
    background-color: #0056b3;
}

/* HERNÁ OBRAZOVKA */
.header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 1.1em;
    font-weight: bold;
    color: #555;
}

#question-text {
    font-size: 2.5em;
	font-weight: bold;
	color: #FF0000;
    margin: 30px 0;
    min-height: 50px; /* Zabraňuje posunu pri zmene textu */
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; /* Dva stĺpce */
    gap: 15px;
    margin-top: 20px;
}

.option-button {
    padding: 15px 10px;
    font-size: 1em;
    font-weight: bold;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.1s, border-color 0.1s;
    height: 60px; /* Fixná výška */
    text-align: center;
}
.option-button:hover:not(:disabled) {
    background-color: #e9ecef;
}

/* STAVY TLAČIDIEL */
.option-button.correct {
    background-color: #28a745;
    color: white;
    border-color: #28a745;
}
.option-button.wrong {
    background-color: #dc3545;
    color: white;
    border-color: #dc3545;
}
.option-button:disabled {
    cursor: default;
    opacity: 0.9;
}

/* VÝSLEDKY */
.final-score {
    font-size: 3em;
    font-weight: bold;
    color: #007bff;
    margin: 20px 0;
}

.result-message {
    font-size: 1.1em;
    font-weight: bold;
	color: #009900;
    margin: 20px 0;
}

#restart-button {
    padding: 12px 25px;
    margin-top: 20px;
    font-size: 1.875em;
    color: white;
    background-color: #FF3300;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}
#restart-button:hover {
    background-color: #138496;
}