/* --- DESIGN TOKENS (from prompt) --- */
:root {
    --bg-primary: #0A0E1A;
    --bg-secondary: #0F1728;
    --cyan: #00F5FF;
    --purple: #A855F7;
    --text-white: #FFFFFF;
    --text-gray: #CBD5E1;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --space-4: 32px;
    --space-6: 48px;
    --space-8: 64px;
}

body {
    margin: 0;
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-white);
}

.questionnaire-container {
    min-height: 100vh;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
    padding: 20px;
}

.screen {
    display: none;
    width: 100%;
    max-width: 700px;
    text-align: center;
}

.screen.active {
    display: block;
}

.screen-group {
    margin-bottom: var(--space-8);
}

.section-title {
    font: 24px var(--font-heading);
    color: var(--purple);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-6);
    text-align: center;
}

/* --- PROGRESS BAR --- */
.progress-container {
    width: 100%;
    max-width: 700px;
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    padding: 0 20px;
    display: none; /* Initially hidden */
}

.progress-bar {
    width: 100%;
    background-color: var(--bg-secondary);
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
}

.progress-bar-inner {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--cyan), var(--purple));
    transition: width 0.3s ease-in-out;
}

.progress-text {
    text-align: right;
    font-size: 14px;
    color: var(--text-gray);
    margin-top: 5px;
}


/* --- WELCOME SCREEN --- */
.welcome-screen {
    min-height: 100vh;
    padding: var(--space-6) var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-content {
    max-width: 700px;
    text-align: center;
}

.welcome-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--cyan), var(--purple));
    border-radius: 50px;
    font: 14px var(--font-heading);
    font-weight: bold;
    text-transform: uppercase;
    color: var(--bg-primary);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
}

.welcome-title {
    font: 56px var(--font-heading);
    font-weight: bold;
    color: var(--text-white);
    line-height: 1.2;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--cyan), var(--purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-description {
    font: 20px var(--font-body);
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: var(--space-6);
}

.welcome-benefits {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    color: var(--text-gray);
}

.welcome-note {
    font-size: 14px;
    color: var(--text-gray);
    margin-top: var(--space-4);
}

/* --- QUESTION SCREENS --- */
.question-screen h3 {
    font: 36px var(--font-heading);
    color: var(--text-white);
    margin-bottom: var(--space-6);
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: var(--space-6);
}

.option-label {
    display: block;
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-align: left;
}

.option-label:hover {
    border-color: var(--cyan);
}

.option-label input {
    margin-right: 15px;
    accent-color: var(--purple);
}

.option-label input:checked + span {
    color: var(--cyan);
}

input[type="text"],
textarea {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--text-gray);
    border-radius: 10px;
    padding: 15px;
    color: var(--text-white);
    font-family: var(--font-body);
    font-size: 16px;
    box-sizing: border-box;
}

textarea {
    min-height: 120px;
}

.hint {
    font-size: 14px;
    color: var(--text-gray);
    text-align: left;
    margin-top: 10px;
}

.scale-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.scale-container > span {
    font-size: 14px;
    color: var(--text-gray);
    flex: 1;
    text-align: center;
}

.scale-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
}

.scale-label input {
    accent-color: var(--purple);
}

.scale-label span {
    margin-top: 5px;
}

/* --- NAVIGATION --- */
.navigation-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: var(--space-4);
}

.btn-start, .btn-next, .btn-prev, .btn-submit {
    padding: 15px 30px;
    border-radius: 50px;
    border: 1px solid var(--cyan);
    background: transparent;
    color: var(--cyan);
    font-family: var(--font-heading);
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-start, .btn-next, .btn-submit {
    background: var(--cyan);
    color: var(--bg-primary);
}

.btn-start:hover, .btn-next:hover, .btn-submit:hover {
    background: var(--purple);
    border-color: var(--purple);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(168, 85, 247, 0.3);
}

.btn-prev {
     color: var(--text-gray);
     border-color: var(--text-gray);
}

.btn-prev:hover {
    background: var(--bg-secondary);
    color: var(--text-white);
    border-color: var(--text-white);
}

.consent-label {
    display: flex;
    align-items: flex-start; /* Align items to the top */
    text-align: left;
    gap: 15px; /* Space between checkbox and text */
}

.consent-label input[type="checkbox"] {
    margin-top: 5px; /* Align checkbox with the first line of text */
    flex-shrink: 0; /* Prevent checkbox from shrinking */
}

.consent-label a {
    color: var(--cyan);
    text-decoration: underline;
}

/* --- Final Screens --- */
#email-screen h3, #consent-screen h3 {
    font-size: 24px;
    color: var(--text-gray);
    font-weight: 400;
    margin-bottom: var(--space-6);
}

#email-screen .options-container, #consent-screen .options-container {
    max-width: 500px; /* Narrower container for these steps */
    margin-left: auto;
    margin-right: auto;
}

#thank-you-screen h2 {
    font: 48px var(--font-heading);
    color: var(--text-white);
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--cyan), var(--purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#thank-you-screen p {
    font-size: 20px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

#email-input, #consent-checkbox {
    margin-bottom: var(--space-4);
}

#email-input {
    width: 100%;
    padding: 15px;
    background: var(--bg-secondary);
    border: 1px solid var(--text-gray);
    border-radius: 10px;
    color: var(--text-white);
    font-size: 16px;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    :root {
        --space-4: 24px;
        --space-6: 32px;
        --space-8: 48px;
    }

    .welcome-title {
        font-size: 40px;
    }

    .welcome-description {
        font-size: 18px;
    }

    .question-screen h3 {
        font-size: 28px;
    }

    #email-screen h3, #consent-screen h3 {
        font-size: 20px;
    }

    #thank-you-screen h2 {
        font-size: 36px;
    }

    #thank-you-screen p {
        font-size: 18px;
    }
    
    .progress-container {
        padding: 0 15px;
    }

    .navigation-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .btn-start, .btn-next, .btn-prev, .btn-submit {
        width: 100%;
    }

    .scale-container {
        flex-direction: column;
        gap: 20px;
    }

    .scale-container > span {
        text-align: center;
    }
}