/* Piano Hero Styles */
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: #111827;
    color: white;
}

/* Piano Keys */
.piano-key {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    transition: all 0.1s ease;
}

.piano-key:hover {
    transform: translateY(2px);
}

.piano-key.active {
    background-color: #fbbf24 !important;
    transform: translateY(4px);
}

/* Falling Notes */
.falling-note {
    position: absolute;
    width: 48px;
    height: 32px;
    border-radius: 8px;
    border: 2px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    transition: top 0.1s linear;
}

.note-blue {
    background-color: #3b82f6;
    border-color: #2563eb;
    color: white;
}

.note-purple {
    background-color: #8b5cf6;
    border-color: #7c3aed;
    color: white;
}

.note-hit {
    background-color: #10b981 !important;
    border-color: #059669 !important;
}

/* Animation classes */
@keyframes fadeOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-20px); }
}

.fade-out {
    animation: fadeOut 0.5s forwards;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 0.3s;
}

/* Transitions */
.scale-transition {
    transition: transform 0.2s ease;
}

/* Game elements */
#notes-container {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    background-color: #1f2937;
    border-bottom: 2px solid white;
    margin: 0 auto;
}

#piano-container {
    position: relative;
    width: 100%;
    height: 180px;
    margin-bottom: 8px;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    overflow: visible;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    #notes-container {
        height: 300px;
    }

    #piano-container {
        height: 120px;
    }
}