:root {
    /* Earth Tone Palette - Clean & Harmonic */

    /* Backgrounds */
    --color-bg: #f4efe9;
    /* Cream/Light Beige - Main background */
    --color-surface: #ffffff;
    /* White - Card backgrounds for contrast */
    --color-surface-hover: #ebe5de;
    /* Slightly darker cream for hover states */

    /* Primary Actions */
    --color-primary: #876f53;
    /* Dark Brown - Primary buttons and active states */
    --color-primary-hover: #6d5a43;
    /* Darker Brown - Hover interactions */

    /* Text */
    --color-text: #3d342b;
    /* Very Dark Brown - Main text */
    --color-text-muted: #6b5d52;
    /* Medium Brown/Gray - Subtitles */

    /* Borders & Accents */
    --color-border: #c2ae96;
    /* Medium Beige/Tan - Borders */

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;

    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Inter', sans-serif;
    --font-serif: 'Playfair Display', serif;
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    font-weight: 400;
    line-height: 1.5;
    min-height: 100vh;
}

/* Headings */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
    /* Updated to use variable */
}

.app-container {
    max-width: 600px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm);
}

/* Header */
.main-header {
    padding: var(--spacing-md) 0;
    text-align: center;
}

.logo-wrapper {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

/* Logo Image Style */
.logo-img {
    max-width: 400px;
    width: 100%;
    height: auto;
    display: block;
}

.highlight {
    color: var(--color-primary);
    font-weight: 700;
}

/* Main Content */
.quiz-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
}

/* Question Card */
.question-card {
    width: 100%;
    background-color: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(135, 111, 83, 0.05), 0 4px 6px -2px rgba(135, 111, 83, 0.025);
    /* Subtle brown shadow */
    border: 1px solid var(--color-border);
    animation: fadeIn 0.5s ease-out;
}

.question-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-align: center;
    line-height: 1.2;
    color: var(--color-text);
}

.question-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
}

/* Options */
.options-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.option-btn {
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
    color: var(--color-text);
    padding: var(--spacing-md);
    border-radius: 0.75rem;
    cursor: pointer;
    font-family: var(--font-main);
    font-weight: 500;
    font-size: 1.05rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

/* Fix sticky hover on mobile */
@media (hover: hover) {
    .option-btn:hover {
        border-color: var(--color-primary);
        background-color: var(--color-bg);
        /* Use cream bg on hover */
        transform: translateY(-2px);
        box-shadow: 0 4px 6px -1px rgba(135, 111, 83, 0.1);
    }
}

.option-btn:active {
    background-color: var(--color-bg);
    border-color: var(--color-primary);
    transform: translateY(0);
}

.option-btn.selected {
    background-color: var(--color-bg);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(135, 111, 83, 0.15);
    /* Soft brown ring */
    z-index: 1;
}

.continue-btn {
    width: 100%;
    margin-top: var(--spacing-md);
    padding: 1.2rem;
    background-color: var(--color-primary);
    color: #ffffff;
    border: none;
    border-radius: 0.75rem;
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s;
    box-shadow: 0 4px 6px -1px rgba(135, 111, 83, 0.2);
}

@media (hover: hover) {
    .continue-btn:hover {
        background-color: var(--color-primary-hover);
        transform: translateY(-2px);
        box-shadow: 0 10px 15px -3px rgba(135, 111, 83, 0.25);
    }
}

.continue-btn:active {
    transform: translateY(0);
}

.continue-btn:disabled {
    background-color: var(--color-surface-hover);
    color: var(--color-border);
    cursor: not-allowed;
    box-shadow: none;
    border: 1px solid var(--color-border);
}

/* Progress Bar */
.progress-container {
    width: 100%;
    height: 8px;
    background-color: var(--color-border);
    border-radius: 4px;
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    opacity: 0.5;
    /* Slightly muted track */
}

.progress-fill {
    height: 100%;
    background-color: var(--color-primary);
    width: 0%;
    transition: width 0.5s ease;
    border-radius: 4px;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Checkbox specific */
.checkbox-icon {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
    background: var(--color-surface);
}

.option-btn.selected .checkbox-icon {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

.option-btn.selected .checkbox-icon::after {
    content: '✓';
    font-weight: 800;
    font-size: 16px;
}

/* Result Page Specifics */
.final-page-container {
    background: var(--color-surface);
    text-align: center;
}

.final-headline {
    font-size: 1.8rem;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.text-highlight {
    color: var(--color-primary);
    background: rgba(135, 111, 83, 0.1);
    padding: 0 4px;
    border-radius: 4px;
}

/* Loading Bar */
.loading-bar-container {
    width: 100%;
    height: 12px;
    background-color: var(--color-border);
    border-radius: 6px;
    margin: var(--spacing-md) 0;
    overflow: hidden;
    opacity: 0.4;
}

.loading-bar-fill {
    height: 100%;
    background-color: var(--color-primary);
    width: 0%;
    transition: width 0.1s linear;
    border-radius: 4px;
}

.loading-percentage {
    text-align: right;
    font-weight: 700;
    color: var(--color-text-muted);
}

/* --- New Intro Page Styles (v10) --- */
.intro-headline {
    font-family: 'Playfair Display', serif;
    font-size: 28px;
    /* Range 26-28px */
    color: #5A4634;
    line-height: 1.25;
    font-weight: 700;
}

.intro-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    /* Range 15-16px */
    color: #7A6754;
    line-height: 1.5;
    font-weight: 400;
}

.intro-authority-name {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    color: #4A3829;
    font-weight: 600;
    /* SemiBold */
    margin: 0;
}

.intro-authority-role {
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    /* Range 13-14px */
    color: #8C6A4A;
    font-weight: 500;
    /* Medium */
    margin-top: 2px;
}

.intro-btn {
    display: block;
    width: 100%;
    padding: 1.2rem;
    /* Gradient Effect */
    background: linear-gradient(90deg, #A48160 0%, #8C6A4A 100%);
    color: #ffffff;
    border: none;
    border-radius: 0.75rem;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    /* SemiBold */
    font-size: 16px;
    text-transform: none;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 6px -1px rgba(140, 106, 74, 0.25);
}

@media (hover: hover) {
    .intro-btn:hover {
        /* Slightly flipped or lighter gradient on hover */
        background: linear-gradient(90deg, #b08b68 0%, #997452 100%);
        transform: translateY(-2px);
        box-shadow: 0 8px 12px -2px rgba(140, 106, 74, 0.3);
    }
}

.intro-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px -1px rgba(140, 106, 74, 0.2);
}