* {
    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;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

.container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 100%;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 1.8em;
    color: #333;
    margin-bottom: 8px;
}

.subtitulo {
    color: #666;
    font-size: 0.85em;
}

.drum-kit {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 15px;
}

.drum-pad {
    background: linear-gradient(145deg, #f0f0f0, #ffffff);
    border: 2px solid #667eea;
    border-radius: 12px;
    padding: 20px 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.1s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    user-select: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 80px;
    aspect-ratio: 1;
}

.drum-pad:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.drum-pad.ativo {
    transform: scale(1.05);
    background: linear-gradient(145deg, #667eea, #764ba2);
    border-color: #ffd700;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.drum-tecla {
    font-size: 1.8em;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 5px;
    display: block;
    line-height: 1;
}

.drum-pad.ativo .drum-tecla {
    color: #ffffff;
}

.drum-nome {
    font-size: 0.7em;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.drum-pad.ativo .drum-nome {
    color: #ffd700;
}


@media (min-width: 480px) {
    body {
        padding: 15px;
    }
    
    .container {
        padding: 20px;
        border-radius: 18px;
        max-width: 500px;
    }
    
    h1 {
        font-size: 2.2em;
    }
    
    .subtitulo {
        font-size: 0.95em;
    }
    
    .drum-kit {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
        margin-top: 20px;
    }
    
    .drum-pad {
        padding: 25px 15px;
        border-radius: 14px;
        min-height: 100px;
    }
    
    .drum-tecla {
        font-size: 2.2em;
        margin-bottom: 8px;
    }
    
    .drum-nome {
        font-size: 0.8em;
    }
}


@media (min-width: 768px) {
    body {
        padding: 20px;
    }
    
    .container {
        padding: 30px;
        border-radius: 20px;
        max-width: 700px;
    }
    
    header {
        margin-bottom: 30px;
    }
    
    h1 {
        font-size: 2.5em;
        margin-bottom: 10px;
    }
    
    .subtitulo {
        font-size: 1em;
    }
    
    .drum-kit {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
        margin-top: 25px;
    }
    
    .drum-pad {
        padding: 30px 20px;
        border: 3px solid #667eea;
        border-radius: 15px;
        min-height: 120px;
    }
    
    .drum-tecla {
        font-size: 2.5em;
        margin-bottom: 10px;
    }
    
    .drum-nome {
        font-size: 0.85em;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 900px;
        padding: 35px;
    }
    
    h1 {
        font-size: 2.8em;
    }
    
    .subtitulo {
        font-size: 1.05em;
    }
    
    .drum-kit {
        grid-template-columns: repeat(6, 1fr);
        gap: 15px;
        margin-top: 30px;
    }
    
    .drum-pad {
        padding: 25px 15px;
        min-height: 110px;
    }
    
    .drum-tecla {
        font-size: 2.4em;
    }
    
    .drum-nome {
        font-size: 0.85em;
    }
}

/* Desktop médio - 6 colunas com mais espaço */
@media (min-width: 1280px) {
    .container {
        max-width: 1100px;
        padding: 40px;
    }
    
    h1 {
        font-size: 3em;
    }
    
    .subtitulo {
        font-size: 1.1em;
    }
    
    .drum-kit {
        grid-template-columns: repeat(6, 1fr);
        gap: 20px;
        margin-top: 35px;
    }
    
    .drum-pad {
        padding: 30px 20px;
        min-height: 130px;
    }
    
    .drum-tecla {
        font-size: 2.8em;
    }
    
    .drum-nome {
        font-size: 0.9em;
    }
}

/* Desktop grande - 6 colunas com máximo espaço */
@media (min-width: 1440px) {
    .container {
        max-width: 1200px;
        padding: 50px;
    }
    
    h1 {
        font-size: 3.2em;
    }
    
    .subtitulo {
        font-size: 1.15em;
    }
    
    .drum-kit {
        grid-template-columns: repeat(6, 1fr);
        gap: 25px;
        margin-top: 40px;
    }
    
    .drum-pad {
        padding: 35px 25px;
        min-height: 150px;
    }
    
    .drum-tecla {
        font-size: 3em;
    }
    
    .drum-nome {
        font-size: 0.95em;
    }
}