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

body {
    font-family: 'Arial', 'Helvetica', sans-serif;
    background: linear-gradient(180deg, #1a1a2e 0%, #0f0f1e 100%);
    color: #ffffff;
    overflow: hidden;
    height: 100vh;
}

/* Main Container */
.game-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Panels */
.panel {
    background: rgba(0, 0, 0, 0.7);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 10px;
    overflow-y: auto;
    backdrop-filter: blur(5px);
}

.left-panel {
    width: 20%;
    min-width: 250px;
}

.right-panel {
    width: 20%;
    min-width: 250px;
}

#game-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 10px;
}

/* Left Panel - Score Display */
.score-header h2 {
    text-align: center;
    font-size: 24px;
    color: #00ff88;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
    margin-bottom: 15px;
}

/* Difficulty Toggle */
.difficulty-toggle {
    text-align: center;
    margin-bottom: 15px;
}

.toggle-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    gap: 8px;
}

.difficulty-text {
    font-size: 14px;
    font-weight: bold;
    color: #00ff88;
}

.toggle-label input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 60px;
    height: 30px;
    background: #4CAF50;
    border-radius: 15px;
    transition: background 0.3s;
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    top: 3px;
    left: 3px;
    transition: transform 0.3s;
}

.toggle-label input[type="checkbox"]:checked + .toggle-slider {
    background: #f44336;
    box-shadow: 0 0 5px rgba(244, 67, 54, 0.5);
}

.toggle-label input[type="checkbox"]:checked + .toggle-slider::before {
    transform: translateX(30px);
}

.score-display {
    background: rgba(0, 255, 136, 0.1);
    border: 2px solid #00ff88;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.score-line {
    font-size: 18px;
    margin: 8px 0;
    font-weight: bold;
}

#totalScore {
    color: #00ff88;
    font-size: 24px;
}

#lastStars {
    color: #ffd700;
}

/* Breakdown Display */
.breakdown-display {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 15px;
}

.breakdown-header {
    font-size: 14px;
    font-weight: bold;
    color: #00ff88;
    margin-bottom: 10px;
    text-align: center;
}

.breakdown-item {
    display: flex;
    align-items: center;
    margin: 10px 0;
    gap: 8px;
}

.breakdown-label {
    min-width: 60px;
    font-size: 14px;
}

.progress-bar {
    flex: 1;
    height: 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #00ff88 0%, #00cc6a 100%);
    transition: width 0.5s ease;
    width: 0%;
}

.breakdown-value {
    min-width: 50px;
    font-size: 14px;
    text-align: right;
    color: #00ff88;
}

/* Right Panel - Controls */
.controls-section,
.objective-section,
.tips-section {
    margin-bottom: 25px;
}

.controls-section h3,
.objective-section h3,
.tips-section h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #00ff88;
    text-align: center;
}

.control-item {
    margin: 12px 0;
    padding: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 5px;
}

kbd {
    display: inline-block;
    padding: 4px 8px;
    background: #333;
    border: 2px solid #555;
    border-radius: 5px;
    font-family: monospace;
    font-weight: bold;
    color: #00ff88;
    margin-right: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hint {
    font-size: 11px;
    color: #aaa;
    font-style: italic;
    display: block;
    margin-top: 2px;
}

/* Keyboard Layout */
.keyboard-layout {
    margin: 15px 0;
}

.key-row {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    margin-bottom: 15px;
    gap: 30px;
}

.key-row-centered {
    justify-content: center;
    gap: 30px;
}

.key-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 5px;
}

.key-label {
    font-size: 12px;
    color: #fff;
    font-weight: bold;
    display: block;
}

.objective-section p {
    margin: 8px 0;
    font-size: 14px;
}

.goal {
    font-weight: bold;
    color: #ffd700;
}

.tips-section ul {
    list-style: none;
    padding-left: 0;
}

.tips-section li {
    padding: 5px 0;
    padding-left: 20px;
    position: relative;
}

.tips-section li::before {
    content: "•";
    position: absolute;
    left: 5px;
    color: #00ff88;
    font-weight: bold;
}

/* Help Button */
.help-button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    animation: pulse 2s infinite;
}

.help-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(102, 126, 234, 0.4);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(102, 126, 234, 0.6);
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    margin: 3% auto;
    padding: 30px;
    border: 3px solid #00ff88;
    border-radius: 15px;
    width: 80%;
    max-width: 800px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 255, 136, 0.3);
}

.modal-content h2 {
    text-align: center;
    color: #00ff88;
    font-size: 28px;
    margin-bottom: 20px;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

.modal-content h3 {
    color: #00ff88;
    font-size: 20px;
    margin-top: 20px;
    margin-bottom: 10px;
}

.help-section {
    margin-bottom: 20px;
}

.help-section p {
    margin: 8px 0;
    line-height: 1.6;
}

.help-section ul,
.help-section ol {
    margin-left: 20px;
    line-height: 1.8;
}

.help-section kbd {
    font-size: 14px;
}

.close-button {
    color: #aaa;
    float: right;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.close-button:hover {
    color: #ff0000;
}

.modal-footer {
    text-align: center;
    margin-top: 20px;
    color: #aaa;
    font-style: italic;
}

/* Game Over Modal */
.game-over-content {
    text-align: center;
}

.final-score {
    margin: 30px 0;
}

.big-score {
    font-size: 32px;
    font-weight: bold;
    color: #00ff88;
    margin-bottom: 20px;
}

.big-score span {
    font-size: 48px;
}

.progress-bar-large {
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.3);
    margin: 20px 0;
}

.progress-fill-large {
    height: 100%;
    background: linear-gradient(90deg, #00ff88 0%, #00cc6a 100%);
    transition: width 1s ease;
    width: 0%;
}

.percentage {
    font-size: 36px;
    font-weight: bold;
    color: #ffd700;
    margin: 10px 0;
}

.grade {
    font-size: 64px;
    margin: 20px 0;
    text-shadow: 0 0 20px currentColor;
}

.stats {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
}

.stats p {
    font-size: 20px;
    margin: 10px 0;
}

.stats span {
    color: #00ff88;
    font-weight: bold;
}

.restart-button {
    padding: 20px 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
    margin-top: 20px;
}

.restart-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.5);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #00ff88;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #00cc6a;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .left-panel,
    .right-panel {
        width: 25%;
        min-width: 200px;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .game-container {
        flex-direction: column;
    }

    .left-panel,
    .right-panel {
        width: 100%;
        height: auto;
        max-height: 20vh;
    }

    #game-area {
        flex: 1;
    }
}