:root {
    --primary-color: #e2e8f0;
    --secondary-color: #ef4444;
    --accent-color: #f87171;
    --background-color: #1a1a1a;
    --card-background: #2d2d2d;
    --text-color: #e2e8f0;
    --border-radius: 8px;
    --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-color);
} 

.subtitle {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.progress-section {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
}

.progress-bar-container {
    margin-top: 1rem;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background-color: #404040;
    border-radius: 15px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background-color: var(--secondary-color);
    width: 0%;
    transition: width 0.5s ease-in-out;
}

.progress-percentage {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.9rem;
    text-shadow: 0 0 2px rgba(255, 255, 255, 0.8);
    z-index: 1;
}

.progress-stats {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 1.2rem;
    font-weight: 500;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--card-background);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.stat-card h3 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.stat-card p {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--primary-color);
}

.songs-section {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.songs-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.songs-list h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.songs-list ul {
    list-style: none;
}

.songs-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #404040;
}

.songs-list li a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.2s ease;
    display: block;
    padding: 0.2rem 0;
}

.songs-list li a:hover {
    color: var(--accent-color);
}

.songs-list li:last-child {
    border-bottom: none;
}

footer {
    text-align: center;
    margin-top: 3rem;
    color: var(--text-color);
}

footer a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: var(--accent-color);
}

.drum-kit-section {
    background-color: var(--card-background);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin: 4rem 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.drum-kit-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.drum-kit-image {
    text-align: center;
    padding: 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius);
}

.drum-kit-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
}

.drum-kit-image img:hover {
    transform: scale(1.02);
}

.drum-kit-info h3 {
    color: var(--secondary-color);
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.drum-kit-description {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.drum-kit-features {
    list-style: none;
    margin-bottom: 2rem;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 1.5rem;
    border-radius: var(--border-radius);
}

.drum-kit-features li {
    color: var(--text-color);
    margin-bottom: 0.8rem;
    padding-left: 1.8rem;
    position: relative;
    font-size: 1.1rem;
}

.drum-kit-features li::before {
    content: "•";
    color: var(--secondary-color);
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.drum-kit-link {
    display: inline-block;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    padding: 0.8rem 1.5rem;
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    text-align: center;
    width: 100%;
}

.drum-kit-link:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    background-color: rgba(255, 255, 255, 0.05);
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .songs-container {
        grid-template-columns: 1fr;
    }

    .drum-kit-section {
        padding: 2rem;
        margin: 2rem 0;
    }

    .drum-kit-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .drum-kit-image {
        order: -1;
    }

    .drum-kit-info h3 {
        font-size: 1.8rem;
    }
}

.achievements-section {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
}

.achievements-section h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.achievement-badge {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.achievement-badge.completed {
    border-color: var(--secondary-color);
}

.achievement-badge.completed:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(239, 68, 68, 0.2);
}

.achievement-badge.locked {
    opacity: 0.6;
    filter: grayscale(0.5);
}

.badge-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.achievement-badge h3 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.achievement-badge p {
    color: var(--text-color);
    font-size: 0.9rem;
    opacity: 0.8;
}

.achievement-badge.completed .badge-icon {
    animation: pulse 2s infinite;
}

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

@media (max-width: 768px) {
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .achievements-grid {
        grid-template-columns: 1fr;
    }
}

.rudiments-section {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin: 4rem 0 2rem 0;
}

.rudiments-section h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.rudiments-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.rudiment-tier {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.rudiment-tier h3 {
    color: var(--secondary-color);
    font-size: 1.4rem;
    margin-bottom: 1rem;
    text-align: center;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary-color);
}

.rudiment-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.rudiment-list li {
    color: var(--text-color);
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 1rem;
    transition: all 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.rudiment-list li:last-child {
    border-bottom: none;
}

.rudiment-list li:hover {
    color: var(--secondary-color);
    padding-left: 0.5rem;
}

.rudiment-list li::after {
    content: "✓";
    color: var(--secondary-color);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.rudiment-tier:first-child .rudiment-list li::after {
    opacity: 1;
}

@media (max-width: 768px) {
    .rudiments-container {
        grid-template-columns: 1fr;
    }
    
    .rudiment-tier {
        margin-bottom: 1rem;
    }
}

.rudiments-source {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.rudiments-source p {
    color: var(--text-color);
    font-size: 0.9rem;
    opacity: 0.8;
}

.rudiments-source a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.rudiments-source a:hover {
    color: var(--accent-color);
}