:root {
    --bg-color: #f0f2f5;
    --container-bg: #fff;
    --text-color: #333;
    --btn-bg: #007bff;
    --btn-hover: #0056b3;
    --number-bg: #4CAF50;
    --number-text: #fff;
    --shadow: rgba(0, 0, 0, 0.1);
    --input-bg: #fff;
    --input-border: #ccc;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #f0f2f5;
    --btn-bg: #3700b3;
    --btn-hover: #6200ee;
    --number-bg: #03dac6;
    --number-text: #000;
    --shadow: rgba(0, 0, 0, 0.5);
    --input-bg: #3d3d3d;
    --input-border: #555;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px; /* 여백 추가 */
    min-height: 100vh;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
    overflow-y: auto; /* 세로 스크롤 명시 */
}

.container {
    background-color: var(--container-bg);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px var(--shadow);
    text-align: center;
    position: relative;
    transition: background-color 0.3s, box-shadow 0.3s;
    width: 100%;
    max-width: 500px;
    margin: 20px auto; /* 중앙 정렬 및 상하 여백 */
}

.comment-text {
    font-size: 16px;
    margin-top: 10px;
    color: var(--text-color);
    opacity: 0.9;
    line-height: 1.5;
}

#face-image {
    width: 100%;
    max-width: 300px;
    display: block;
    margin: 0 auto;
    border-radius: 15px;
    cursor: pointer; /* 클릭 가능 표시 */
    transition: transform 0.2s;
}

#face-image:hover {
    transform: scale(1.02);
}

h1 {
    color: var(--text-color);
    margin-bottom: 20px;
}

.numbers-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.number {
    width: 50px;
    height: 50px;
    background-color: var(--number-bg);
    color: var(--number-text);
    font-size: 24px;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    transition: background-color 0.3s, color 0.3s;
}

#generate-btn {
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#generate-btn:hover {
    background-color: var(--btn-hover);
}

.top-controls {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 8px;
}

#theme-toggle, #lang-toggle {
    background: none;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

#theme-toggle:hover, #lang-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] #theme-toggle:hover, [data-theme="dark"] #lang-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.divider {
    margin: 40px 0;
    border: 0;
    border-top: 1px solid var(--input-border);
    opacity: 0.3;
}

.contact-form-container {
    text-align: left;
    margin-top: 20px;
}

.contact-form-container h2 {
    text-align: center;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
    box-sizing: border-box;
    transition: border-color 0.3s, background-color 0.3s;
}

.form-group textarea {
    height: 100px;
    resize: vertical;
}

#submit-btn {
    width: 100%;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 12px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#submit-btn:hover {
    background-color: var(--btn-hover);
}

#disqus_thread {
    margin-top: 40px;
    padding-top: 20px;
    text-align: left;
}

.animal-test-section {
    margin-bottom: 30px;
}

.upload-container {
    width: 100%;
    max-width: 300px;
    margin: 20px auto;
    padding: 40px 20px;
    border: 2px dashed var(--input-border);
    border-radius: 15px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.upload-container:hover {
    background-color: rgba(0,0,0,0.05);
}

#face-image {
    width: 100%;
    border-radius: 10px;
}

.upload-label img {
    width: 60px;
    opacity: 0.5;
}

[data-theme="dark"] .upload-label img {
    filter: invert(1);
}

#result-container {
    margin-top: 20px;
}

.result-message {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
}

.bar-container {
    height: 25px;
    background-color: #eee;
    border-radius: 5px;
    margin-bottom: 10px;
    overflow: hidden;
    position: relative;
}

.bar-fill {
    height: 100%;
    transition: width 0.5s ease-in-out;
}

.bar-text {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #000;
    font-weight: bold;
}

#loading-spinner {
    margin: 20px 0;
    font-style: italic;
}

.tab-menu {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--input-border);
    padding-bottom: 10px;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-color);
    padding: 10px 20px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    opacity: 0.6;
    transition: opacity 0.3s, border-bottom 0.3s;
}

.tab-btn.active {
    opacity: 1;
    border-bottom: 3px solid var(--btn-bg);
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}