* {
    box-sizing: border-box;
    font-family: 'Pretendard';
    word-break: keep-all;
}

body, html {
    align-items: center;
    background-color: #f4f7fb;
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: center;
    margin: 0;
    overscroll-behavior: auto;
    padding: 0;
    width: 100%;
}

button[data-value="1994"], button[data-value="1995"], button[data-value="1996"], button[data-value="1997"], button[data-value="1998"], button[data-value="1999"], button[data-value="2000"], button[data-value="2001"], button[data-value="2002"], button[data-value="2003"], button[data-value="2004"], button[data-value="2005"], button[data-value="2006"], button[data-value="2007"], button[data-value="2008"], button[data-value="2009"], button[data-value="2010"] {
    opacity: 0.5;
    pointer-events: none;
}

button[style*="display: none"] {
    opacity: 0;
    pointer-events: none;
}

h1 {
    color: #333;
    font-size: 25px;
    font-weight: 800;
    margin: 7.5px 0 15px;
    text-align: center;
}

#bulkSubjectSelect {
    background-color: #f4f4f4;
    border-radius: 5px;
    border: 1px solid #e0e0e0;
    cursor: pointer;
    font-size: 0.9em;
    padding: 8px 12px;
    transition: all 0.2s ease;
    width: 100%;
}

#bulkSubjectSelect:focus {
    border-color: #007bff;
    box-shadow: 0 0 5px rgba(0,123,255,0.2);
    outline: none;
}

#clearInputsButton {
    background-color: #dbdbdb;
    border-radius: 5px;
    border: 0px;
    color: #5b5b5b;
    display: flex;
    margin-left: auto;
    padding: 5px 10px;
}

#clearInputsButton:hover {
    background-color: #c3c3c3;
}

#clearMathInputsButton {
    background-color: #dbdbdb;
    border-radius: 5px;
    border: 0px;
    color: #5b5b5b;
    display: flex;
    margin-left: auto;
    padding: 5px 10px;
}

#clearMathInputsButton:hover {
    background-color: #c3c3c3;
}

#delete-account {
    cursor: auto;
    font-size: 12px;
    font-weight: 100;
    padding: 0px;
}

#delete-account, #showPreferredSubjectsForm_btn, #showbulkDownload_btn, #showchangepasswordform_btn, #showuser_scores_history_btn {
    background: inherit;
    border: 0;
    color: #b9b9b9;
    cursor: pointer;
}

#fastGradingInputs {
    display: flex;
    flex-wrap: wrap;
    gap: 2%;
}

#fastGradingInputs .input-group {
    margin-top: 3px;
    width: 49%;
}

#fastGradingInputs input {
    border-radius: 4px;
    border: 1px solid #ccc;
    box-sizing: border-box;
    font-size: 16px;
    margin-bottom: 10px;
    padding: 10px;
    width: 100%;
}

#fastGradingInputs input:focus {
    border-color: #007bff;
    box-shadow: 0 0 5px rgba(0,123,255,0.2);
    outline: none;
}

#individualAnswers {
    max-height: 60vh;
    overflow-y: auto;
}

#koreanSubject {
    background-color: #f4f4f4;
    border-radius: 5px;
    border: 1px solid #e0e0e0;
    cursor: pointer;
    display: flex;
    font-size: 0.9em;
    margin-right: auto;
    padding: 8px 12px;
    transition: all 0.2s ease;
    user-select: none;
    width: auto;
}

#koreanSubject option {
    background-color: #fff;
    color: #333;
    padding: 8px 12px;
}

#koreanSubject option:selected {
    background-color: #f2f2f2;
}

#koreanSubject.open {
    border-color: #007bff;
}

#logout-btn {
    background: #f5f5f5;
    border: 1px solid #d9d9d9;
    color: #595959;
}

#logout-btn:hover {
    background: #e8e8e8;
}

#mathFastGradingInputs {
    display: flex;
    flex-wrap: wrap;
    gap: 2%;
}

#mathFastGradingInputs .input-group {
    margin-top: 3px;
    width: 49%;
}

#mathFastGradingInputs input {
    border-radius: 4px;
    border: 1px solid #ccc;
    box-sizing: border-box;
    font-size: 16px;
    margin-bottom: 10px;
    padding: 10px;
    width: 100%;
}

#mathFastGradingInputs input:focus {
    border-color: #007bff;
    box-shadow: 0 0 5px rgba(0,123,255,0.2);
    outline: none;
}

#mathSubjectSelect {
    background-color: #f4f4f4;
    border-radius: 5px;
    border: 1px solid #e0e0e0;
    cursor: pointer;
    font-size: 0.9em;
    padding: 8px 12px;
    transition: all 0.2s ease;
    user-select: none;
    width: auto;
}

#mathSubjectSelect option {
    background-color: #fff;
    color: #333;
    padding: 8px 12px;
}

#mathSubjectSelect option:selected {
    background-color: #f2f2f2;
}

#mathSubjectSelect.open {
    border-color: #007bff;
}

#mathToggleWrongAnswers {
    background-color: #6c757d;
    border-radius: 5px;
    border: none;
    color: white;
    cursor: pointer;
    display: inline-block;
    margin-top: 10px;
    margin: 0 auto;
    padding: 8px 16px;
    transition: background-color 0.2s ease;
}

#mathToggleWrongAnswers:hover {
    background-color: #5a6268;
}

#mathWrongAnswersList {
    max-height: 50vh;
    overflow-y: auto;
}

#mathWrongAnswersList table {
    border-collapse: collapse;
    margin-top: 10px;
    overflow-y: auto;
    width: 100%;
}

#mathWrongAnswersList td, #mathWrongAnswersList th {
    border: 1px solid #ddd;
    padding: 6px;
    text-align: center;
}

#mathWrongAnswersList th {
    background-color: #f2f2f2;
}

#password_change_form {
    border-top: 1px solid #e9ecef;
    display: none;
    margin-top: 24px;
    padding-top: 24px;
}

#preferred-subjects-form {
    border-top: 1px solid #e9ecef;
    max-height: 40vh;
    overflow-y: auto;
    padding-top: 24px;
}

#preferred-subjects-form form {
    gap: 5px !important;
}

#resetInputsButton {
    background-color: #007bff;
    border-radius: 5px;
    border: 0px !important;
    color: white;
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 10px;
    margin: 0 auto;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: auto;
}

#resetInputsButton:hover {
    background-color: #0056b3;
}

#resetMathInputsButton {
    background-color: #007bff;
    border-radius: 5px;
    border: 0px !important;
    color: white;
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 10px;
    margin: 0 auto;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: auto;
}

#resetMathInputsButton:hover {
    background-color: #0056b3;
}

#selectAll {
    #a9a9a9;
    accent-color: #004085;
    border-radius: 3px;
    border: 1px solid #e0e0e0;
    cursor: pointer;
    height: 16px;
    width: 16px;
}

#selectAll:checked {
    background-color: #004085;
    border-color: #004085;
}

#selectAll:hover {
    border-color: #004085;
}

#selectAll_label {
    color: #666;
}

#showbulkDownload_btn {
    display: none;
}

#showbulkDownload_btn.premium-active {
    background: linear-gradient(45deg,#ffd700,#ffa500);
    border-radius: 5px;
    border: none;
    color: white;
    cursor: pointer;
    display: block;
    padding: 10px 20px;
    transition: all 0.3s ease;
}

#showbulkDownload_btn.premium-active:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transform: translateY(-2px);
}

#showchangepasswordform_btn {
    background: #1890ff30;
    color: #1890ff;
}

#showchangepasswordform_btn:hover {
    background: #1890ff70;
}

#showPreferredSubjectsForm_btn {
    background: #fff1f0;
    color: #ff4d4f;
}

#showPreferredSubjectsForm_btn:hover {
    background: #ffccc7;
}

#splash_screen {
    align-items: center;
    background-color: rgba(0,0,0,0.8);
    color: white;
    height: 100%;
    justify-content: center;
    left: 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 9999;
}

#toggleWrongAnswers {
    background-color: #6c757d;
    border-radius: 5px;
    border: none;
    color: white;
    cursor: pointer;
    display: inline-block;
    margin-top: 10px;
    margin: 0 auto;
    padding: 8px 16px;
    transition: background-color 0.2s ease;
}

#toggleWrongAnswers:hover {
    background-color: #5a6268;
}

#user-info {
    background: #fcfcfc;
    border-radius: 16px;
    padding: 16px;
    text-align: center;
}

#user-info img {
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    height: 120px;
    margin-bottom: 16px;
    object-fit: cover;
    width: 120px;
}

#user_scores_history {
    margin-bottom: 10px;
    overflow-y: auto;
}

#user_scores_history h3 {
    color: #333;
    font-size: 1.2em;
    margin-bottom: 15px;
}

#wrongAnswersList {
    max-height: 50vh;
    overflow-y: auto;
}

#wrongAnswersList table {
    border-collapse: collapse;
    margin-top: 10px;
    overflow-y: auto;
    width: 100%;
}

#wrongAnswersList td, #wrongAnswersList th {
    border: 1px solid #ddd;
    padding: 6px;
    text-align: center;
}

#wrongAnswersList th {
    background-color: #f2f2f2;
}

#yearRangeText {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 10px;
}

.always_login {
    align-items: center;
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-bottom: -5px;
    margin-bottom: 16px;
    margin-top: -5px;
    padding-right: 5px;
}

.always_login input[type="checkbox"] {
    -moz-appearance: none;
    -webkit-appearance: none;
    appearance: none;
    background-color: #fff;
    border-radius: 2px;
    border: 1px solid #ccc;
    cursor: pointer;
    flex: none;
    height: 11px !important;
    margin: 0;
    min-height: 11px;
    min-width: 11px;
    padding: 0;
    position: relative;
    width: 11px !important;
    width: auto;
}

.always_login input[type="checkbox"]:checked {
    background-color: #004085;
    border-color: #004085;
}

.always_login input[type="checkbox"]:checked:after {
    border-width: 0 1px 1px 0;
    border: solid white;
    content: '';
    height: 5px;
    left: 2px;
    position: absolute;
    top: 1px;
    transform: rotate(45deg);
    width: 3px;
}

.always_login label {
    align-items: center;
    display: flex;
    gap: 5px;
}

.always_login p {
    color: gray;
    font-size: 13px;
    margin: 0;
}

.answer-button-group {
    background: white;
    border-radius: 5px;
    border: 1px solid #ccc;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    padding: 5px;
    position: fixed;
    z-index: 100000;
}

.answer-button-group button {
    background-color: #ededed;
    border-radius: 3px;
    border: 1px solid #ddd;
    color: #000;
    cursor: pointer;
    margin: 0 3px;
    padding: 5px 10px;
}

.answer-button-group button:hover {
    background-color: #f0f0f0;
}

.answer-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 10px;
}

.answer-buttons button {
    background-color: #fff;
    border: 0.5px solid #e0e0e0;
    color: #666;
    cursor: pointer;
    flex: 0 0 auto;
    font-size: 0.9em;
    font-weight: 300;
    padding: 8px 12px;
    transition: all 0.2s ease;
    user-select: none;
}

.answer-buttons button.active {
    background-color: #007bff;
    border-color: #007bff;
    color: #fff;
}

.answer-buttons button:disabled {
    background-color: #eee;
    border-color: #ddd;
    color: #999;
    cursor: default;
}


.bottom-nav {
    align-items: center;
    background: white;
    border-top: 1px solid #eee;
    bottom: 0;
    display: flex;
    height: 60px;
    justify-content: space-around;
    left: 0;
    padding: 8px 0;
    position: fixed;
    right: 0;
    z-index: 1000;
}

.bottom-nav a {
    align-items: center;
    color: #666;
    display: flex;
    flex-direction: column;
    font-size: 12px;
    gap: 4px;
    text-decoration: none;
    width: 50%;
}

.bottom-nav a.active {
    color: #1890ff;
}

.bulk-download-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.bulk-download-form h4 {
    color: #333;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
}

.change_btn, .login_btn, .register_btn {
    background: transparent;
    border-radius: 8px;
    border: 1px solid #b52222;
    color: #b52222;
    cursor: pointer;
    display: inline-block;
    font-size: 14px;
    padding: 8px 16px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.close {
    color: #aaa;
    cursor: pointer;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.container {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    max-width: 768px;
    padding: 20px;
    width: 100%;
}

.correct {
    background-color: #0066cc !important;
    color: white !important;
}

.download-btn {
    background: inherit;
    border-radius: 5px;
    border: none;
    color: inherit;
    cursor: pointer;
    font-size: 10px;
    margin-left: 5px;
    padding: 5px;
}

.download-button {
    background-color: #004085;
    border-radius: 5px;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 500;
    margin-top: 10px;
    padding: 10px 20px;
    transition: all 0.2s ease;
}

.download-button:hover {
    background-color: #002752;
    transform: translateY(-1px);
}

.error-message {
    color: #dc3545;
    font-weight: 600;
    margin-top: 10px;
    text-align: center;
}

.fast-grading-link {
    background-color: #0052ad !important;
    border-radius: 100px;
    color: white;
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    margin: 5px 5px;
    padding: 10px;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: 49.5% !important;
}

.fast-grading-submit {
    background-color: #007bff;
    border-radius: 5px;
    border: 0px !important;
    color: white;
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 10px;
    margin: 0 auto;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: auto;
}

.fast-grading-submit:hover {
    background-color: #0056b3;
}

.file-links {
    flex-grow: 1;
    margin-bottom: 10px;
    max-height: 300px;
    overflow-y: auto;
}

.file-links a {
    background-color: #004085;
    border-radius: 100px;
    color: white;
    cursor: pointer;
    display: block;
    font-size: 12px;
    font-weight: 500;
    margin: 5px 0;
    padding: 10px;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: 49.5%;
}

.file-links h2 {
    color: #004085;
    font-size: 15px;
    font-weight: 200;
    margin-bottom: 3px;
    text-align: center;
    width: 100%;
}

.header {
    background-color: #fcfdff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    gap: 5px;
    justify-content: flex-end;
    left: 0;
    padding: 10px 20px;
    position: fixed;
    right: 0;
    top: 0;
    width: 100%;
    z-index: 90;
}

.header a {
    background-color: #004085;
    border-radius: 100px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 15px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.header a:hover {
    background-color: #002752;
    transform: translateY(-1px);
}

.header span {
    color: #004085;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 8px;
}

.individual-answers-link {
    background-color: #0052ad !important;
    width: 100% !important;
}

.kakao_ad_area_mobile {
    display: none;
    padding-top: 10px;
}

.kakao_ad_area_pc {
    padding-top: 10px;
}

.login-signup-container {
    border-top: 1px solid #e9ecef;
    margin-top: 24px;
    padding-top: 24px;
    text-align: center;
}

.modal {
    background-color: rgba(0,0,0,0.4);
    display: none;
    height: 100%;
    left: 0;
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    z-index: 100;
}

.modal-content {
    background-color: #fefefe;
    border-radius: 8px;
    left: 50%;
    max-height: 80vh;
    max-width: 768px;
    overflow-y: auto;
    padding: 20px;
    position: absolute;
    top: 47.5%;
    transform: translate(-50%,-50%);
    width: 92.5%;
}

.mode-buttons button {
    background-color: #efefef;
    font-size: 12px;
}

.mode-buttons button:hover {
    background-color: #d5d5d5;
}

.month-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.month-checkboxes input[type="checkbox"] {
    cursor: pointer;
    height: 16px;
    width: 16px;
}

.month-checkboxes label {
    align-items: center;
    color: #666;
    cursor: pointer;
    display: flex;
    font-size: 0.9em;
    gap: 5px;
}

.month-selection label[for="selectAll"] {
    align-items: center;
    color: #333;
    cursor: pointer;
    display: flex;
    font-size: 0.9em;
    font-weight: 500;
    gap: 5px;
    margin-bottom: 10px;
}

.month-selection label[for="selectAll"]:hover {
    color: #004085;
}

.mypage_extrabtn {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 24px 0px 10px 0px;
}

.mypage_extrabtn button {
    border-radius: 12px;
    border: none;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    padding: 14px;
    transition: all 0.2s ease;
}

.phpmodal {
    background-color: rgba(0,0,0,0.4);
    display: none;
    height: 100%;
    left: 0;
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    z-index: 100;
}

.phpmodal-content {
    background-color: #fefefe;
    border-radius: 8px;
    left: 50%;
    max-height: 80vh;
    max-width: 500px;
    overflow-y: auto;
    padding: 20px;
    position: absolute;
    top: 47.5%;
    transform: translate(-50%,-50%);
    width: 92.5%;
}

.phpmodal-content button[type="submit"] {
    background-color: #004085;
    border-radius: 8px;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    padding: 12px 20px;
    transition: all 0.2s ease;
    width: 100%;
}

.phpmodal-content button[type="submit"]:hover {
    background-color: #002752;
    transform: translateY(-1px);
}

.phpmodal-content form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    gap: 16px;
}

.phpmodal-content h2 {
    color: #004085;
    font-size: 1.5em;
    margin-bottom: 20px;
}

.phpmodal-content input {
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    box-sizing: border-box;
    font-size: 14px;
    outline: none;
    padding: 12px 15px;
    transition: border-color 0.2s ease;
    width: 100%;
}

.phpmodal-content input:focus {
    border-color: #004085;
}

.save-button:hover {
    background: #2c5282;
}

.save_score_btn {
    background: #cdcdcd;
    border-radius: 5px;
    border: 0px;
    color: #6f6f6f;
    cursor: pointer;
    display: flex;
    font-size: 14px;
    margin-top: 10px;
    margin: 0 auto;
    padding: 10px 20px;
    text-align: center;
    width: max-content;
    margin-bottom: 10px;
}

.save_score_btn:hover {
    background-color: #b9b9b9;
}

.science-studies-subjects {
    display: none;
    margin-top: 10px;
}

.science-studies-subjects.show {
    display: block;
}

.science_subject_button_group .subject-button {
    flex: 0 1 calc(25% - 8px);
}

.scores-table {
    background-color: #ffffff;
    border-collapse: collapse;
    border: 1px solid #f1f1f1;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-top: 10px;
    width: 100%;
}

.scores-table td, .scores-table th {
    border-bottom: 1px solid #eee;
    font-size: 12.5px;
    padding: 12px 15px;
    text-align: left;
}

.scores-table th {
    background-color: #f8f9fa;
    color: #333;
    font-weight: 600;
}

.scores-table tr:last-child td {
    border-bottom: none;
}

.scores-table tr:nth-child(even) {
    background-color: #ffffff;
}

.scores-table tr:nth-child(odd) {
    background-color: #f8f9fa;
}

.scrollable {
    background-color: #f9f9f9;
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 5px;
    scroll-behavior: smooth;
}

.scrollable::-webkit-scrollbar {
    height: 6px;
}

.scrollable::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.section h2, .years_section h2 {
    color: #555;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
}

.section, .years_section {
    margin-bottom: 10px;
}

.short-answer-group {
    display: flex;
    flex-wrap: wrap;
    gap: 2%;
    width: 100%;
}

.short-answer-group h3 {
    width: 100%;
}

.signup-button {
    background: transparent;
    border-radius: 8px;
    border: 1px solid #1890ff;
    color: #1890ff;
    cursor: pointer;
    display: inline-block;
    font-size: 14px;
    padding: 8px 16px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.signup-button:hover {
    background: rgba(24,144,255,0.1);
}

.social-studies-subjects {
    display: none;
    margin-top: 10px;
}

.social-studies-subjects.show {
    display: block;
}

.social_subject_button_group .subject-button {
    flex: 0 1 calc(20% - 8px);
}

.splash_screen_message {
    font-size: 2rem;
    font-weight: 100;
    line-height: 1.5;
    text-align: center;
}

.subject-button {
    background: #f9f9f9;
    border-radius: 8px;
    border: 0px;
    color: #4a5568;
    cursor: pointer;
    flex: 0 1 calc(33.333% - 8px);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 9px;
    transition: all 0.2s ease;
}

.subject-button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.subject-button.selected {
    background: #4299e1;
    border-color: #3182ce;
    color: white;
}

.subject-button:hover {
    background: #e5e5e5;
    border-color: #cbd5e0;
    border: 0;
}

.subject-group {
    margin-bottom: 12px;
}

.subject-group h4 {
    color: #333;
    font-size: 17px;
    font-weight: 600;
    margin: 0 0 16px 0;
    text-align: center;
}

.subject_links {
    display: flex;
    flex-wrap: wrap;
    gap: 1%;
    margin-bottom: 5px;
}

.success-message {
    color: red;
    font-weight: 600;
    text-align: center;
}

.tab {
    background-color: #fff;
    border: 0.5px solid #e0e0e0;
    color: #666;
    cursor: pointer;
    flex: 0 0 auto;
    font-size: 0.9em;
    font-weight: 300;
    padding: 8px 12px;
    transition: all 0.2s ease;
    user-select: none;
}

.tab.active {
    background-color: #007bff;
    border-color: #007bff;
    color: #fff;
}

.user_only {
    display: none !important;
}

.wrong {
    background-color: #cc0000 !important;
    color: white !important;
}

.year-inputs {
    align-items: center;
    display: flex;
    gap: 10px;
}

.year-inputs select {
    background-color: #f4f4f4;
    border-radius: 5px;
    border: 1px solid #e0e0e0;
    font-size: 0.9em;
    padding: 8px 12px;
}

.year-inputs span {
    color: #666;
    font-size: 0.9em;
}

#extraInformationModal_contents #file_links a {
    background-color: #004085;
    border-radius: 100px;
    color: white;
    cursor: pointer;
    display: block;
    font-size: 12px;
    font-weight: 500;
    margin: 5px 0;
    padding: 10px;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: 100%;
}

/* 버튼 스타일 */
[id^="show_wronganswerrate_table_btn"] { /* id가 "show_wronganswerrate_table_btn"으로 시작하는 요소 선택 */
    background-color: #0052ab;
    border: 0;
    border-radius: 100px;
    color: white;
    cursor: pointer;
    display: block;
    font-size: 12px;
    font-weight: 500;
    margin: 5px 0;
    padding: 10px;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: 100%;
}

/* 테이블 스타일 */
[id^="wrong_answer_rate_table"] { /* id가 "wrong_answer_rate_table"으로 시작하는 요소 선택 */
    max-width: 100%;
    border-collapse: collapse;
    width: 100%;
    font-size: 14px;
    margin: 20px auto 0px auto;
    border: 1px solid #ddd;
    width: min-content;
}

[id^="wrong_answer_rate_table"] th,
[id^="wrong_answer_rate_table"] td {
    border: 1px solid #ddd;
    padding: 5px;
    text-align: center;
    min-width: 8vh;
}

/* 헤더 스타일 */
[id^="wrong_answer_rate_table"] th {
    background-color: #f5f5f5;
}

/* 행 스타일 */
[id^="wrong_answer_rate_table"] tr:nth-child(even) {
    background-color: #f9f9f9;
}

/* 정렬 표시 */
[id^="wrong_answer_rate_table"] th[data-sort] {
    position: relative;
    padding-right: 20px;
    cursor: pointer;
}

[id^="wrong_answer_rate_table"] th[data-sort]::after {
    content: '';
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
}

[id^="wrong_answer_rate_table"] th.sort-desc::after {
    border-top: 5px solid #666;
    border-bottom: none;
}

[id^="wrong_answer_rate_table"] th.sort-asc::after {
    border-bottom: 5px solid #666;
    border-top: none;
}
.table-container {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.fixed-column {
    position: absolute;
    left: 0;
    top: 0;
    width: auto;
    z-index: 2;
    background: white;
}

.fixed-column table {
    width: auto;
    border-collapse: collapse;
}

.scroll-content {
    overflow-x: auto;
    margin-left: 16vh; /* Adjust based on fixed column width */
}

.fixed-column table,
.scroll-content table {
    border-collapse: collapse;
    font-size: 14px;
}

.fixed-column th,
.fixed-column td,
.scroll-content th,
.scroll-content td {
    border: 1px solid #ddd;
    padding: 5px;
    text-align: center;
    min-width: 80px;
    height: 37.5px; /* Ensure consistent height */
    background: white;
    font-size: 12.5px;
}

.fixed-column th,
.scroll-content th {
    background-color: #f5f5f5;
    font-weight: bold;
}

/* Maintain hover effects */
.fixed-column tr:hover td,
.scroll-content tr:hover td {
    background-color: ;
}

/* Sort indicators */
.scroll-content th[data-sort] {
    position: relative;
    padding-right: 20px;
    cursor: pointer;
}

.scroll-content th[data-sort]::after {
    content: '';
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
}

.scroll-content th.sort-desc::after {
    border-top: 5px solid #666;
}

.scroll-content th.sort-asc::after {
    border-bottom: 5px solid #666;
}
.fixed-column thead th{
    height: 60px !important;
}

.scroll-content thead th{
    height: 30px !important;
}


@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1000px) {
    .container {
        padding: 15px;
        width: 92.5%;
        max-height: 80vh;
        overflow-y: auto;
        margin-top: -5vh;
    }

    .header a {
        font-size: 12px !important;
    }

    .tab {
        font-size: 0.8em;
        padding: 6px 10px;
    }
}

@media (max-width: 768px) {
    .bulk-download-form {
        gap: 15px;
    }

    .month-checkboxes {
        gap: 10px;
    }

    .year-inputs {
        align-items: flex-start;
        flex-direction: column;
    }

    .year-inputs select {
        width: 100%;
    }
    .section h2, .years_section h2{
        margin-bottom: 6px;
        margin-top: 6px;
        font-size: 13px;
    }
    .section, .years_section{
        margin-bottom: 6px;
    }
    .tab {
        font-size: 0.75em;
        padding: 5px 9px;
    }
    .container .logo{
        font-size: 20px !important;
    }
    .container h5{
        font-size: 12px;
        line-height: 20px;
    }
    .container h5 button{
        font-size: 11px;
        line-height: 8px;
        height: 16px;
        line-height: 8px;
        padding: 0 10px;
    }
    .error-message{
        font-size: 13px;
    }
    .bottom-nav{
        height: 50px;
    }
    .bottom-nav svg{
        width: 20;
        height: 20;
    }
    .bottom-nav a{
        font-size: 11px;
    }
    .file-links h2{
        font-size: 13px;
    }
    .file-links a{
        padding: 8px 0px;
        font-size: 11px;
        font-weight: 400;
    }
    .file-links a button{
        padding: 3px;
    }
    .file-links a button i{
        font-size: 10px;
    }
    #extraInformationModal_contents #file_links a{
        padding: 8px 0px;
        font-size: 11px;
        font-weight: 400;        
    }
    #extraInformationModal_contents #file_links a button{
        padding: 3px;       
    }
    #extraInformationModal_contents #file_links a button i{
        font-size: 10px;       
    }
    #show_wronganswerrate_table_btn{
        padding: 8px 0px;
        font-size: 11px;
        font-weight: 400;        
    }
    .modal-content{
        font-size: 13px;
        padding: 15px;
    }
    .answer-buttons button{
        padding: 6px 9px;
    }
    .scroll-content{
        margin-left: 100px;
    }
    #wrong_answer_rate_table th, #wrong_answer_rate_table td{
        min-width: 50px;
    }

}

@media screen and (max-width: 768px) {
    .kakao_ad_area_mobile {
        display: block;
    }

    .kakao_ad_area_pc {
        display: none !important;
    }
}