/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark grey theme with yellow accents */
    --accent-yellow: #D4A574;
    --accent-yellow-bright: #E8C4A0;
    --accent-yellow-dim: #B8936B;

    /* Dark grey scale */
    --grey-50: #1A1D23;
    --grey-100: #23272F;
    --grey-200: #2D3139;
    --grey-300: #3A3F4A;
    --grey-400: #4F5562;
    --grey-500: #6B7280;
    --grey-600: #9CA3AF;
    --grey-700: #C1C7D0;
    --grey-800: #E5E7EB;
    --grey-900: #F9FAFB;

    /* Functional colors */
    --background: #1A1D23;
    --surface: #23272F;
    --border: #3A3F4A;
    --text-primary: #F9FAFB;
    --text-secondary: #C1C7D0;
    --text-tertiary: #9CA3AF;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
    padding: 2rem 1rem;
    animation: fadeIn 0.3s ease-in;
}

.screen.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Container */
.container {
    background: var(--surface);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2), 0 2px 4px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border);
    padding: 3rem 2rem;
    max-width: 500px;
    width: 100%;
    position: relative;
}

/* Typography */
h2 {
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
}

.small-title {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: 2rem;
}

.small-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

input[type="text"],
input[type="email"] {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    transition: all 0.15s ease;
    background: var(--grey-200);
    color: var(--text-primary);
}

input[type="text"]:focus,
input[type="email"]:focus {
    outline: none;
    border-color: var(--accent-yellow);
    box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.15);
}

/* Buttons */
.primary-button {
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: var(--accent-yellow);
    color: var(--grey-50);
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.primary-button:hover {
    background: var(--accent-yellow-bright);
}

.primary-button:active {
    background: var(--accent-yellow-dim);
    transform: scale(0.98);
}

.secondary-button {
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.secondary-button:hover {
    background: var(--grey-200);
    border-color: var(--grey-400);
    color: var(--text-primary);
}

/* Progress Bar */
.progress-container {
    width: 100%;
    margin-bottom: 2rem;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--grey-300);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-yellow);
    transition: width 0.3s ease;
    width: 0%;
}

/* Quiz Container */
.quiz-container {
    margin-top: 0;
}

#question-content {
    text-align: center;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-title {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.instruction {
    color: var(--text-tertiary);
    font-size: 0.75rem;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.question-text {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

/* Slider */
.slider-container {
    margin: 2rem 0 3rem;
}

.slider-wrapper {
    position: relative;
    margin-bottom: 1rem;
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--background);
    outline: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-yellow);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(212, 165, 116, 0.5);
    transition: all 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(212, 165, 116, 0.7);
}

.slider::-moz-range-thumb {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-yellow);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(212, 165, 116, 0.5);
    transition: all 0.2s ease;
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(212, 165, 116, 0.7);
}

.slider-value {
    display: none;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
}

.label-left,
.label-right {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
    max-width: 45%;
}

.label-left {
    text-align: left;
}

.label-right {
    text-align: right;
}

/* Button Group */
.button-group {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.button-group .secondary-button {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    background: transparent;
    color: var(--text-medium);
    border: 1px solid var(--border);
}

.button-group .primary-button {
    display: none;
}

/* Results */
.results-container {
    max-width: 700px;
    text-align: center;
    background: var(--surface);
    color: var(--text-primary);
    padding: 3rem 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2), 0 2px 4px rgba(0, 0, 0, 0.1);
}

.results-container h2 {
    color: var(--text-primary);
}

#results-chart-container {
    margin: 2rem 0;
    display: flex;
    justify-content: center;
}

#results-canvas {
    max-width: 100%;
    height: auto;
}

.category-scores {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.score-item {
    background: var(--grey-200);
    padding: 1rem;
    border-radius: 6px;
    border-left: 3px solid var(--accent-yellow);
}

.score-item h4 {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.score-item .score {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-yellow);
}

/* Mobile Optimization */
@media (max-width: 640px) {
    .screen {
        padding: 1rem 0.5rem;
    }

    .container {
        padding: 2rem 1.5rem;
        border-radius: 12px;
    }

    h2 {
        font-size: 1.5rem;
    }

    .question-text {
        font-size: 1rem;
    }

    .slider-labels {
        font-size: 0.7rem;
    }

    .category-scores {
        grid-template-columns: 1fr;
    }
}

/* Ensure no scrolling on mobile */
@media (max-height: 700px) {
    .container {
        padding: 1.5rem 1rem;
        max-height: 95vh;
        overflow-y: auto;
    }

    .question-text {
        margin-bottom: 1.5rem;
    }

    .slider-container {
        margin: 1.5rem 0 2rem;
    }
}