body {
    font-family: Arial, sans-serif;
    text-align: center;
    background: #f0f2f5;
    margin: 0;
    padding: 0;
}

header {
    background: #1e3a8a;
    color: white;
    padding: 20px;
}

.planner {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 20px;
}

.day {
    border-radius: 10px;
    margin: 10px;
    padding: 20px;
    width: 150px;
    color: white;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.segunda { background: #60a5fa; }
.terca   { background: #34d399; }
.quarta  { background: #facc15; color: black; }
.quinta  { background: #fb923c; }
.sexta   { background: #a78bfa; }
.sabado  { background: #f87171; }
.domingo { background: #9ca3af; color: black; }

.quiz {
    margin: 40px;
}

button {
    margin-top: 20px;
    padding: 10px 20px;
    background: #1e3a8a;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

button:hover {
    background: #2563eb;
}