body {
    font-family: sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 900px;
}

h1 {
    text-align: center;
    color: #333;
}

#calendar-container {
    margin-bottom: 20px;
}

#calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

#calendar-header button {
    background: #6c63ff;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

#calendar-header button:hover {
    background: #574dff;
}

#calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    text-align: center;
}

.calendar-day {
    padding: 15px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
}

.calendar-day:hover, .calendar-day.selected {
    background: #6c63ff;
    color: white;
}

#class-details, #booking-form {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}

#class-list {
    list-style: none;
    padding: 0;
}

#class-list li {
    padding: 10px;
    border-bottom: 1px solid #eee;
}

form {
    display: flex;
    flex-direction: column;
}

input, button {
    padding: 12px;
    margin-bottom: 10px;
    border-radius: 8px;
    border: 1px solid #ddd;
}

button[type="submit"] {
    background: #6c63ff;
    color: white;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
}

button[type="submit"]:hover {
    background: #574dff;
}