:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --container-bg: #fff;
    --button-bg: #008CBA;
    --button-text: #fff;
    --lotto-bg: #4CAF50;
    --lotto-text: #fff;
    --input-bg: #fff;
    --input-border: #ccc;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --container-bg: #333;
    --button-bg: #4CAF50;
    --button-text: #fff;
    --lotto-bg: #008CBA;
    --lotto-text: #fff;
    --input-bg: #444;
    --input-border: #555;
}

body {
    font-family: 'Pretendard', sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    margin: 0;
    padding: 40px 0;
}

.theme-switch-wrapper {
    display: flex;
    align-items: center;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
}

.theme-switch-wrapper span {
    margin-left: 10px;
    font-size: 14px;
}

.theme-switch {
    display: inline-block;
    height: 24px;
    position: relative;
    width: 50px;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
}

.slider:before {
    background-color: #fff;
    bottom: 4px;
    content: "";
    height: 16px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 16px;
}

input:checked + .slider {
    background-color: #66bb6a;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

.container {
    text-align: center;
    padding: 40px;
    background-color: var(--container-bg);
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: background-color 0.3s ease;
    width: 90%;
    max-width: 500px;
}

#lotto-container {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    flex-wrap: wrap;
}

.lotto-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--lotto-bg);
    color: var(--lotto-text);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    margin: 10px;
    transition: transform 0.2s ease, background-color 0.3s ease;
}

.lotto-number:hover {
    transform: scale(1.1);
}

#generate-btn {
    margin-top: 30px;
    padding: 12px 24px;
    font-size: 18px;
    cursor: pointer;
    border: none;
    background-color: var(--button-bg);
    color: var(--button-text);
    border-radius: 8px;
    transition: background-color 0.3s ease, opacity 0.2s;
}

#generate-btn:hover {
    opacity: 0.9;
}

.animal-test {
    margin: 20px 0;
}

.upload-area {
    border: 2px dashed var(--input-border);
    padding: 30px;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-bottom: 20px;
}

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

[data-theme="dark"] .upload-area:hover {
    background-color: rgba(255,255,255,0.05);
}

.upload-area p {
    margin-top: 0;
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.7;
}

#upload-btn {
    padding: 8px 16px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#face-image {
    max-width: 100%;
    max-height: 300px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

#label-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.result-bar-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.result-label {
    width: 60px;
    font-weight: bold;
    font-size: 14px;
}

.bar-container {
    flex-grow: 1;
    height: 12px;
    background-color: var(--input-border);
    border-radius: 6px;
    overflow: hidden;
}

.bar {
    height: 100%;
    background-color: var(--button-bg);
    width: 0%;
    transition: width 0.5s ease;
}

.percent {
    width: 45px;
    font-size: 12px;
    text-align: right;
}

.hidden {
    display: none;
}

#loading {
    margin: 20px 0;
    font-weight: bold;
    color: var(--button-bg);
}

.divider {
    margin: 40px 0;
    border: 0;
    border-top: 1px solid var(--input-border);
    opacity: 0.5;
}

.contact-form {
    text-align: left;
}

.contact-form h2 {
    text-align: center;
    margin-bottom: 25px;
}

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

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

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

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

.submit-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: opacity 0.2s;
    margin-top: 10px;
}

.submit-btn:hover {
    opacity: 0.9;
}