:root {
    --primary-color: #FADADD; /* Soft Pink */
    --secondary-color: #FF8A8A; /* Gentle Coral */
    --accent-color: #A0C4FF;   /* Calm Blue */
    --background-color: #F9F9F9;
    --text-color: #333333;
    --light-text-color: #666666;
    --font-family: 'Noto Sans KR', sans-serif;
    --border-radius: 15px;
    --shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    --card-background: #ffffff;
    --header-background: linear-gradient(135deg, var(--primary-color), #ffffff);
    --footer-background: #EAEAEA;
    --quiz-option-bg: #f1f1f1;
}

body.dark-mode {
    --primary-color: #D1A3A9; /* Muted Pink */
    --secondary-color: #E57373; /* Muted Coral */
    --accent-color: #82A9D4;   /* Muted Blue */
    --background-color: #121212;
    --text-color: #E0E0E0;
    --light-text-color: #B0B0B0;
    --shadow: 0 8px 25px rgba(255, 255, 255, 0.05);
    --card-background: #1E1E1E;
    --header-background: linear-gradient(135deg, #2c2c2c, #1a1a1a);
    --footer-background: #1E1E1E;
    --quiz-option-bg: #333333;
}


* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

header {
    text-align: center;
    padding: 2rem 2rem 4rem 2rem;
    background: var(--header-background);
    position: relative;
}

h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

h2 {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

header p {
    font-size: 1.1rem;
    color: var(--light-text-color);
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

#start-test-button, #restart-button {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 15px rgba(255, 138, 138, 0.4);
    text-decoration: none;
}

#start-test-button:hover, #restart-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 138, 138, 0.5);
}

main {
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

section {
    width: 100%;
    max-width: 800px;
}

h3 {
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-color);
}

/* AI Diagnosis Section */
#ai-diagnosis {
    text-align: center;
}

.quiz-container {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

#quiz {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

#quiz .question-text {
    margin-bottom: 1.5rem;
    font-weight: 700;
}

#quiz .options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#quiz label {
    display: block;
    background-color: var(--quiz-option-bg);
    border-radius: 10px;
    padding: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
    border: 2px solid transparent;
}

#quiz input[type="radio"] {
    display: none;
}

#quiz input[type="radio"]:checked + label {
    background-color: var(--primary-color);
    border-color: var(--secondary-color);
    font-weight: 700;
    color: #333;
}

body.dark-mode #quiz input[type="radio"]:checked + label {
     color: #fff;
}


#next-button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s;
}

#next-button:hover {
    background-color: #87AEEF;
}

.value-prop {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--accent-color);
}

.value-prop h4 {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

/* Success Stories */
#success-stories {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.testimonial {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.testimonial img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: 1rem;
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.testimonial p {
    font-size: 1rem;
    color: var(--light-text-color);
    margin-bottom: 1rem;
}

.testimonial span {
    font-weight: 700;
    color: var(--secondary-color);
}


footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 2rem;
    background-color: var(--footer-background);
    color: var(--light-text-color);
}

.hidden {
    display: none;
}

/* Report Section */
.report-section {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.score-container {
    margin: 1rem 0 2rem 0;
}

.score-container p {
    font-size: 1.2rem;
    color: var(--light-text-color);
}

.score {
    font-size: 5rem;
    font-weight: 700;
    color: var(--secondary-color);
    line-height: 1;
}

.report-details h4 {
    font-size: 1.5rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.report-item {
    background-color: var(--background-color);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    text-align: left;
    border-left: 5px solid var(--accent-color);
}

.report-item p {
    color: var(--text-color);
}

#restart-button {
    margin-top: 2rem;
}


/* Theme Switcher */
.theme-switch-wrapper {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    align-items: center;
}
.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: var(--accent-color);
}

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

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

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


@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }
    h2 {
        font-size: 1.2rem;
    }
    header {
        padding: 4rem 1rem 3rem 1rem;
    }
    main {
        padding: 1rem;
    }
    .score {
        font-size: 4rem;
    }
}