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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f7fa;
    color: #333;
    overflow-x: hidden;
    padding-bottom: 120px; /* Espaço para o cronômetro não cobrir o conteúdo */
}

/* Estilo do popup */
.popup {
    display: none; /* Inicialmente oculto */
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 20px 40px;
    font-size: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
    z-index: 9999;
}

.popup p {
    text-align: center;
}

.container {
    width: 90%;
    max-width: 800px;
    margin: 20px auto;
    text-align: center;
}

h1, h2 {
    margin-bottom: 20px;
    color: #007bff;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px;
    font-size: 14px;
    cursor: pointer;
    width: 100%;
    margin: 10px 0;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #0056b3;
}

.nivel-btn {
    width: 30%;
    display: inline-block;
}

#treino-content {
    margin-top: 30px;
    margin-bottom: 100px;
}

.checklist {
    list-style-type: none;
    padding: 0;
    text-align: left;
    margin: 20px 0;
}

.checklist li {
    margin-bottom: 10px;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.checklist li .material-symbols-outlined {   
    font-size: inherit;
    margin-left: 1%;
    cursor: pointer;
    border: solid 0.1px #007bff;
    border-radius: 10px;
    background: #007bff;
    color: white;
    padding: 0.5px
}

.checklist input[type="checkbox"] {
    margin-right: 10px;
    cursor: pointer;
}

.checklist li.completed {
    text-decoration: line-through; /* Marca o exercício com linha cortando */
    color: #888; /* Cor mais suave para o texto marcado */
}

.checklist li.completed .material-symbols-outlined {
    text-decoration: none !important;
    background: #007bff;
    color: white;
}

#cronometro {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#cronometro .controls {
    display: flex;
    justify-content: center;
    width: 100%;
    gap: 1%;
}

#cronometro p {
    font-size: 18px;
}

#tempo {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

input[type="number"] {
    margin-top: 10px;
    padding: 5px;
    width: 60px;
    text-align: center;
    font-size: 16px;
    margin-right: 10px;
}