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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.role-selection {
    margin: 30px 0;
}

.role-btn {
    display: block;
    padding: 20px;
    margin: 15px 0;
    background: #f8f9fa;
    border: 3px solid #dee2e6;
    border-radius: 10px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s;
}

.role-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.moderator-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
}

.player-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

.player-1 { border-color: #ff4444; }
.player-2 { border-color: #4444ff; }
.player-3 { border-color: #44ff44; }
.player-4 { border-color: #ffff44; }

/* Player Screen */
.player-body {
    background: var(--player-color, #667eea);
}

.player-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.player-header {
    background: white;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.score-display {
    font-size: 2em;
    font-weight: bold;
    color: var(--player-color);
    margin-top: 10px;
}

.status-message {
    background: white;
    padding: 15px;
    border-radius: 10px;
    font-size: 1.2em;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.buzzer-container {
    margin: 50px 0;
}

.buzzer-btn {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 10px solid white;
    background: linear-gradient(135deg, #ff6b6b, #ee5a6f);
    color: white;
    font-size: 3em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.buzzer-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 25px 50px rgba(0,0,0,0.4);
}

.buzzer-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.buzzer-btn.buzzed {
    animation: buzz 0.3s;
}

@keyframes buzz {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.buzzer-btn.locked {
    background: #ccc;
    cursor: not-allowed;
    opacity: 0.5;
}

.buzzer-hint {
    display: block;
    font-size: 0.3em;
    margin-top: 10px;
    opacity: 0.8;
}

.answer-container {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

#answerInput {
    width: 100%;
    padding: 15px;
    font-size: 1.2em;
    border: 3px solid var(--player-color);
    border-radius: 10px;
    margin-bottom: 15px;
}

.submit-btn {
    padding: 15px 40px;
    font-size: 1.2em;
    background: var(--player-color);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.question-display {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-top: 30px;
    font-size: 1.1em;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* Display Screen */
.display-body {
    background: #1a1a2e;
    color: white;
}

.display-container {
    max-width: 1400px;
    margin: 0 auto;
}

.scoreboard {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.player-score {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    border: 3px solid;
}

.player-score.player-1 { border-color: #ff4444; }
.player-score.player-2 { border-color: #4444ff; }
.player-score.player-3 { border-color: #44ff44; }
.player-score.player-4 { border-color: #ffff44; }

.score {
    font-size: 3em;
    font-weight: bold;
    margin-top: 10px;
}

.buzzer-indicator {
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    text-align: center;
}

.buzzer-lights {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.light {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    transition: all 0.3s;
}

.light.player-1 { border: 5px solid #ff4444; }
.light.player-2 { border: 5px solid #4444ff; }
.light.player-3 { border: 5px solid #44ff44; }
.light.player-4 { border: 5px solid #ffff44; }

.light.active {
    animation: pulse 1s infinite;
    box-shadow: 0 0 30px currentColor;
}

.light.player-1.active { background: #ff4444; }
.light.player-2.active { background: #4444ff; }
.light.player-3.active { background: #44ff44; }
.light.player-4.active { background: #ffff44; }

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.buzzed-player {
    font-size: 2em;
    font-weight: bold;
    color: #ffff44;
}

.question-section {
    background: white;
    color: #333;
    padding: 40px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.question-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-weight: bold;
    color: #667eea;
}

.question-text {
    font-size: 1.5em;
    line-height: 1.6;
}

.answer-section {
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
}

.player-answer, .correct-answer {
    background: rgba(255,255,255,0.2);
    padding: 20px;
    border-radius: 10px;
    font-size: 1.3em;
    margin-top: 10px;
}

.controls {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.control-btn {
    padding: 15px 30px;
    font-size: 1.1em;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: bold;
}

.control-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}
.control-btn:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.primary { background: #667eea; color: white; }
.success { background: #44ff44; color: #333; }
.danger { background: #ff4444; color: white; }
.warning { background: #ffaa00; color: #333; }
.category-filter {
background: rgba(255,255,255,0.1);
padding: 20px;
border-radius: 10px;
display: flex;
gap: 20px;
flex-wrap: wrap;
}
.category-filter label {
display: flex;
align-items: center;
gap: 8px;
cursor: pointer;
}
.instructions {
margin-top: 40px;
padding: 20px;
background: #f8f9fa;
border-radius: 10px;
}
.instructions ol {
margin-left: 20px;
margin-top: 15px;
}
.instructions li {
margin: 10px 0;
}
.timer-display {
    font-size: 3em;
    font-weight: bold;
    color: #ffaa00;
    text-align: center;
    margin: 20px 0;
    animation: pulse 1s infinite;
}

.settings-section {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 20px;
}

.setting-group {
    margin-bottom: 20px;
}

.setting-group:last-child {
    margin-bottom: 0;
}

.setting-group h3 {
    margin-bottom: 15px;
    color: #ffff44;
}

.source-select {
    width: 100%;
    padding: 12px;
    font-size: 1.1em;
    border-radius: 8px;
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    color: white;
    margin-bottom: 10px;
    cursor: pointer;
}

.source-select option {
    background: #1a1a2e;
    color: white;
}

.round-input {
    width: 100%;
    padding: 12px;
    font-size: 1.1em;
    border-radius: 8px;
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    color: white;
}

.round-input::placeholder {
    color: rgba(255,255,255,0.5);
}

.category-filter {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}