html, body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #223b6e, #050816);
    color: #fff;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: rgba(0, 0, 0, 0.6);
    font-size: 16px;
}

.top-bar a {
    color: #ffd700;
    margin-left: 6px;
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid #ffd700;
}

.top-bar a:hover {
    background: #ffd700;
    color: #000;
}

.content {
    max-width: 900px;
    margin: 24px auto;
    padding: 0 16px 32px;
    text-align: center;
}

.question-box {
    background: rgba(0, 0, 0, 0.7);
    border-radius: 16px;
    border: 2px solid #ffd700;
    padding: 24px;
    margin-bottom: 24px;
    font-size: 22px;
    min-height: 80px;
}

.answers {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.answer {
    padding: 14px 12px;
    font-size: 18px;
    border-radius: 999px;
    border: 2px solid #1e90ff;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    cursor: pointer;
}

.answer span.label {
    font-weight: 700;
    margin-right: 6px;
    color: #ffd700;
}

.answer.selected {
    background: #1e90ff;
}

.answer.locked {
    background: #ffd700;
    color: #000;
}

.answer.correct {
    background: #15a34a;
}

.answer.wrong {
    background: #b91c1c;
}

.answer.hidden {
    visibility: hidden;
}

.info {
    margin-top: 16px;
    min-height: 24px;
}

.moderator .control-panel {
    margin-bottom: 16px;
}

.moderator .control-panel input {
    padding: 6px 8px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

.moderator .control-panel button {
    margin-left: 8px;
}

.moderator-controls {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 10px;
}

button {
    background: #2563eb;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 14px;
}

button:hover {
    background: #1d4ed8;
}

.admin form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 600px;
    margin-bottom: 24px;
}

.admin input,
.admin textarea,
.admin select {
    width: 100%;
    padding: 6px 8px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

.question-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.question-table th,
.question-table td {
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 8px;
    text-align: left;
}

.question-table th {
    background: rgba(0, 0, 0, 0.4);
}

.info.error {
    color: #fca5a5;
}

@media (max-width: 600px) {
    .question-box {
        font-size: 18px;
        padding: 16px;
    }
    .answer {
        font-size: 16px;
        padding: 10px 8px;
    }
}