* {
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
    color: #333;
}

h1, h2, h3 {
    color: #d0002a;
}

a {
    color: #d0002a;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: #fff;
}

th, td {
    padding: 12px;
    border: 1px solid #ddd;
    font-size: 14px;
    text-align: left;
}

th {
    background-color: #f0f0f0;
    font-weight: bold;
}

tr:nth-child(even) {
    background-color: #fafafa;
}

button {
    background-color: #d0002a;
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-size: 15px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #a80023;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
select {
    width: 100%;
    padding: 10px;
    margin: 6px 0 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 15px;
}

input[type="checkbox"] {
    margin-right: 6px;
}

.casillas {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
    margin-top: 20px;
    max-width: 1000px;
    align-items: center;
    justify-content: center;
}

.casilla {
    width: 100px;
    height: 100px;
    background: #ccc;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-weight: bold;
    border-radius: 10px;
    cursor: not-allowed;
    flex-direction: column;
}

.casilla.activa {
    background: #4CAF50;
    color: white;
    cursor: pointer;
}

.casilla.completada {
    background: #2196F3;
    color: white;
}

.logout-container {
    position: absolute;
    top: 20px;
    right: 20px;
}

.logout-btn {
    background-color: #ccc;
    color: #333;
    padding: 8px 14px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    transition: background 0.3s, color 0.3s;
}

.logout-btn:hover {
    background-color: #d0002a;
    color: #fff;
}