* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f0f2f5;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    width: 90%;
    max-width: 500px;
    border-radius: 8px;
    position: relative;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from { transform: translateY(-100px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #eee;
    position: relative;
}

.modal-header h2 {
    font-size: 18px;
    color: #333;
    line-height: 1.4;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 24px;
    cursor: pointer;
    color: #666;
}

.modal-body {
    padding: 30px;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

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

.form-group input:focus {
    outline: none;
    border-color: #00bcd4;
    box-shadow: 0 0 0 2px rgba(0, 188, 212, 0.2);
}

.btn {
    background: #00bcd4;
    color: white;
    padding: 10px 30px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    display: block;
    margin: 20px auto;
    width: 100%;
}

.btn:hover {
    background: #0097a7;
}

/* Result Page Styles */
#resultPage {
    display: none;
    max-width: 1000px;
    margin: 20px auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.student-info {
    margin-bottom: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 4px;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.result-table th,
.result-table td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: left;
}

.result-table th {
    background: #f8f9fa;
    font-weight: 600;
}

.result-table tr:nth-child(even) {
    background: #f8f9fa;
}