.game-container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 30px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    color: #667eea;
    font-size: 3em;
    text-shadow: 3px 3px 0px #ffd93d;
}

/* Activity Selector */
.activity-selector {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.activity-btn {
    padding: 15px 30px;
    font-size: 1.2em;
    font-weight: bold;
    background: white;
    color: #667eea;
    border: 3px solid #667eea;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s;
}

.activity-btn:hover {
    transform: scale(1.05);
}

.activity-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: #764ba2;
}

/* Activity Content */
.activity-content {
    min-height: 500px;
}

.activity-content.hidden {
    display: none;
}

.activity-content h2 {
    text-align: center;
    color: #2d3561;
    font-size: 2.2em;
    margin-bottom: 30px;
}

/* Clock Activity */
.clock-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.digital-clock {
    font-size: 5em;
    font-weight: bold;
    color: #667eea;
    font-family: 'Courier New', monospace;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.analog-clock {
    position: relative;
}

.clock-face {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: white;
    border: 10px solid #667eea;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.hand {
    position: absolute;
    bottom: 50%;
    left: 50%;
    transform-origin: bottom center;
    background: #2d3561;
    border-radius: 10px;
}

.hour-hand {
    width: 8px;
    height: 80px;
    margin-left: -4px;
    background: #667eea;
}

.minute-hand {
    width: 6px;
    height: 110px;
    margin-left: -3px;
    background: #764ba2;
}

.second-hand {
    width: 3px;
    height: 120px;
    margin-left: -1.5px;
    background: #f5576c;
}

.center-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    background: #2d3561;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.date-display {
    font-size: 1.8em;
    color: #2d3561;
    font-weight: bold;
}

/* Timer Activity */
.timer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.timer-display {
    font-size: 6em;
    font-weight: bold;
    color: #667eea;
    font-family: 'Courier New', monospace;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    background: #f8f9fa;
    padding: 30px 60px;
    border-radius: 20px;
    border: 5px solid #667eea;
}

.timer-controls {
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: center;
}

.time-inputs {
    display: flex;
    gap: 30px;
}

.input-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.input-group label {
    font-size: 1.3em;
    font-weight: bold;
    color: #2d3561;
}

.input-group input {
    width: 100px;
    height: 60px;
    font-size: 2em;
    text-align: center;
    border: 3px solid #667eea;
    border-radius: 10px;
    font-weight: bold;
    color: #2d3561;
}

.timer-buttons {
    display: flex;
    gap: 20px;
}

.btn-timer {
    padding: 20px 40px;
    font-size: 1.5em;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-timer:hover:not(:disabled) {
    transform: scale(1.05);
}

.btn-timer:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Alarm Activity */
.alarm-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.current-time-display {
    font-size: 4em;
    font-weight: bold;
    color: #667eea;
    font-family: 'Courier New', monospace;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.alarm-settings {
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: center;
    background: #f8f9fa;
    padding: 40px;
    border-radius: 20px;
    border: 3px solid #667eea;
}

.alarm-buttons {
    display: flex;
    gap: 20px;
}

.btn-alarm {
    padding: 20px 40px;
    font-size: 1.5em;
    font-weight: bold;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-alarm:hover:not(:disabled) {
    transform: scale(1.05);
}

.btn-alarm:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.alarm-status {
    font-size: 1.5em;
    font-weight: bold;
    color: #2d3561;
    min-height: 30px;
}

.alarm-status.active {
    color: #11998e;
}

.alarm-list {
    width: 100%;
    max-width: 600px;
}

.alarm-item {
    background: white;
    border: 3px solid #667eea;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.alarm-time {
    font-size: 2em;
    font-weight: bold;
    color: #667eea;
}

.alarm-delete {
    padding: 10px 20px;
    font-size: 1.2em;
    background: #f5576c;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s;
}

.alarm-delete:hover {
    transform: scale(1.1);
}

/* Responsive */
@media (max-width: 768px) {
    .activity-selector {
        flex-direction: column;
    }
    
    .time-inputs {
        flex-direction: column;
    }
    
    .timer-buttons,
    .alarm-buttons {
        flex-direction: column;
    }
    
    .digital-clock {
        font-size: 3em;
    }
    
    .timer-display {
        font-size: 4em;
        padding: 20px 40px;
    }
    
    .clock-face {
        width: 250px;
        height: 250px;
    }
}