.center-box {
    width: 500px;
    margin: 30px auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,.1);
    font-family: Arial, sans-serif;
}

.flash {
    text-align: center;
    padding: 10px;
    background: #dff0d8;
    color: #3c763d;
    border-radius: 4px;
    margin-bottom: 15px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 15px;
}

.form-group label {
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}

.form-group input,
.form-group select {
    padding: 10px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 100%;
    box-sizing: border-box;
}

/* =======================
   BUTTON SYSTEM (CLEAN)
   ======================= */
.btn {
    display: inline-block;
    padding: 12px 20px;
    border-radius: 4px;
    font-weight: bold;
    text-decoration: none;
    border: none;
    cursor: pointer;
    text-align: center;
    color: #fff;
    transition: background 0.3s;
    min-width: 100px;
}

/* Save Enrollment (Green) */
.btn-primary {
    background-color: #1ab394;
}
.btn-primary:hover {
    background-color: #18a689;
}

/* Dashboard (Orange) */
.btn-orange {
    background-color: #f8ac59;
}
.btn-orange:hover {
    background-color: #f7a13a;
}

/* Manage Students (Red) */
.btn-red {
    background-color: #ed5565;
}
.btn-red:hover {
    background-color: #d94454;
}

/* Back button (Grey) */
.btn-grey {
    background-color: #6c757d;
}
.btn-grey:hover {
    background-color: #5a6268;
}

/* Button container */
.form-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}

@media (max-width: 700px) {
    .form-buttons {
        flex-direction: column;
    }
}