body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a1a, #2c3e50);
    min-height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
}

h2 {
    font-size: 4rem;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
    margin: 20px 0;
    font-weight: 300;
    font-family: 'Digital-7', 'Orbitron', monospace;
}

#relogio {
    background: rgba(0, 0, 0, 0.3);
    padding: 20px 40px;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    margin-bottom: 40px;
}

#timer {
    background: rgba(0, 0, 0, 0.3);
    padding: 20px 40px;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

hr {
    width: 80%;
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, #ffffff, transparent);
    margin: 30px 0;
}

.botoes {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

button {
    background: #2ecc71;
    border: none;
    padding: 12px 30px;
    font-size: 1rem;
    color: white;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    
}
#btnIniciar {
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

button:hover:not(:disabled) {
    transform: translateY(-2px);
}


button:active:not(:disabled) {
    transform: translateY(1px);
}

button:disabled {
    background: #95a5a6;
    cursor: not-allowed;
    box-shadow: none;
}

#btnPausar {
    background: #34495e;
}

#btnPausar:hover:not(:disabled) {
    background: #2c3e50;
}

#btnEncerrar {
    background: #e74c3c;
}

#btnEncerrar:hover:not(:disabled) {
    background: #c0392b;
}