:root {
    --background-color: #f0f4f8; /* Light pastel blue-gray */
    --text-color: #333;
    --container-bg-color: #ffffff; /* White containers for light theme */
    --button-bg-color: #81c784; /* Light green */
    --button-hover-bg-color: #66bb6a;
    --nav-button-bg: #e0e0e0;
    --nav-button-text: #333;
    --nav-button-hover-bg: #d0d0d0;
    --nav-button-active-bg: #81c784;
    --nav-button-active-text: white;
}

[data-theme="dark"] {
    --background-color: #455a64; /* Darker pastel blue-gray */
    --text-color: #e0e0e0;
    --container-bg-color: #37474f; /* Dark containers for dark theme */
    --button-bg-color: #64b5f6; /* Light blue */
    --button-hover-bg-color: #42a5f5;
    --nav-button-bg: #5a707a;
    --nav-button-text: #e0e0e0;
    --nav-button-hover-bg: #6f8691;
    --nav-button-active-bg: #64b5f6;
    --nav-button-active-text: white;
}

body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    padding: 20px;
    box-sizing: border-box;
}

/* Theme Switch Specific Styles */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    position: absolute;
    top: 20px;
    right: 20px;
}

.theme-switch {
    display: inline-block;
    height: 34px;
    position: relative;
    width: 60px;
}

.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: 26px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 26px;
}

input:checked + .slider {
    background-color: #2196F3;
}

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

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

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


/* Main Navigation */
.main-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    width: 100%;
    max-width: 800px; /* Adjust as needed */
    flex-wrap: wrap;
}

.main-nav .nav-button {
    padding: 10px 15px;
    font-size: 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: var(--nav-button-bg);
    color: var(--nav-button-text);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.main-nav .nav-button:hover {
    background-color: var(--nav-button-hover-bg);
}

.main-nav .nav-button.active {
    background-color: var(--nav-button-active-bg);
    color: var(--nav-button-active-text);
}


/* App Sections */
.app-section {
    display: none; /* Hide all by default */
    width: 100%;
    max-width: 600px;
    margin-bottom: 40px; /* Space between sections if multiple active */
}

.app-section.active {
    display: block; /* Show active section */
}

.container {
    text-align: center;
    background-color: var(--container-bg-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    width: 100%;
    box-sizing: border-box; /* Ensure padding doesn't push width over */
}

h1 {
    color: var(--text-color);
    margin-bottom: 20px;
}
h2 {
    color: var(--text-color);
    margin-bottom: 20px;
}

/* Common button styling */
button {
    padding: 10px 20px;
    font-size: 1.2rem;
    cursor: pointer;
    background-color: var(--button-bg-color);
    color: white;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
    margin-top: 10px; /* Added margin for buttons */
}

button:hover {
    background-color: var(--button-hover-bg-color);
}

/* Lotto Specific Styles */
#numbers {
    margin-top: 20px;
    font-size: 2rem;
    font-weight: bold;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    color: white; /* Changed to white as individual colors now dictate background */
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

/* Individual colors for each lotto number */
#lotto .number:nth-child(1) { background-color: #FFB3BA; } /* Pastel Red */
#lotto .number:nth-child(2) { background-color: #BAE1FF; } /* Pastel Blue */
#lotto .number:nth-child(3) { background-color: #BAFFC9; } /* Pastel Green */
#lotto .number:nth-child(4) { background-color: #FFFFBA; color: #333;} /* Pastel Yellow */
#lotto .number:nth-child(5) { background-color: #FFDFBA; } /* Pastel Orange */
#lotto .number:nth-child(6) { background-color: #E0BBE4; } /* Pastel Purple */


/* Form Specific Styles */
.form-container {
    text-align: left;
}

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

.form-container form {
    display: flex;
    flex-direction: column;
}

.form-container label {
    margin-bottom: 5px;
    font-weight: bold;
}

.form-container input[type="text"],
.form-container input[type="email"],
.form-container textarea {
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid var(--text-color); /* Use text color for border */
    border-radius: 5px;
    background-color: var(--input-bg-color, var(--container-bg-color)); /* Fallback for input */
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.form-container input[type="text"]:focus,
.form-container input[type="email"]:focus,
.form-container textarea:focus {
    border-color: var(--button-bg-color); /* Use accent color on focus */
    outline: none;
}

.form-container button[type="submit"] {
    background-color: var(--button-bg-color);
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background-color 0.3s ease;
}

.form-container button[type="submit"]:hover {
    background-color: var(--button-hover-bg-color);
}


/* Teachable Machine Specific Styles */
.teachable-machine-container {
    /* container already styled above */
}

.test-options {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

#webcam-container {
    #webcam-container {
        display: none; /* 기본은 숨김 */
        margin: 20px auto; /* 가운데 정렬 추가 */
        justify-content: center; /* 내부 요소 가운데 정렬 */
    }
}

#uploaded-image-container {
    margin-top: 20px;
    border: 1px solid var(--text-color);
    border-radius: 5px;
    overflow: hidden;
    display: block; /* To center the canvas */
    margin: 20px auto;

    width: 200px;
    height: 200px;
    background-color: #000; /* Black background for webcam area */
}

#uploaded-image-container canvas {
    display: block; /* Remove extra space below canvas */
}


#label-container {
    margin-top: 20px;
    font-size: 1.2rem;
    font-weight: bold;
    text-align: left; /* Align predictions to left within container */
    max-width: 200px; /* Match webcam width */
    margin-left: auto;
    margin-right: auto;
}

#label-container div {
    margin-bottom: 5px;
    padding: 5px;
    border: 1px solid var(--text-color);
    border-radius: 5px;
    background-color: var(--button-bg-color); /* Use button bg color */
    color: white; /* Ensure text is readable */
}

/* Disqus Specific Styles */
.disqus-container {
    margin-top: 40px;
    padding: 20px;
    background-color: var(--container-bg-color);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px; /* Reduced width for comment section */
    box-sizing: border-box;
}

.file-upload {
    display: flex;
    flex-direction: column; /* 세로로 배치 */
    align-items: center;    /* 가로축 기준 중앙 정렬 */
    justify-content: center;
    text-align: center;
}

#face-image {
    display: block;
    margin: 0 auto;        /* 좌우 여백을 자동으로 설정해 가운데 배치 */
    margin-bottom: 20px;   /* 결과창과 간격을 띄움 */
}

.label-container {
    width: 100%;           /* 부모 너비에 맞춤 */
    max-width: 400px;      /* 너무 넓어지지 않게 최대 너비 제한 */
    margin: 0 auto;        /* 가운데 정렬 */
}