/* dna-civics.css - DNA Civics Assessment Styles
   Version 1.0 - Matching Political DNA design system
   Requires: core.css
*/

/* =================================================================
   PAGE LAYOUT
   ================================================================= */

.quiz-container {
    min-height: 100vh;
    background: var(--dark);
    position: relative;
    overflow-x: hidden;
}

/* =================================================================
   QUIZ SCREENS
   ================================================================= */

.quiz-screen {
    min-height: 100vh;
    display: none;
    opacity: 0;
}

.quiz-screen.active {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.4s ease forwards;
}

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

/* =================================================================
   WELCOME SCREEN
   ================================================================= */

.welcome-content {
    text-align: center;
    max-width: 600px;
    padding: var(--space-6);
    animation: fadeIn 0.6s ease;
}

/* Lab badge */
.welcome-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(6, 255, 165, 0.08);
    border: 1px solid rgba(6, 255, 165, 0.2);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--accent-green);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-6);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 8px var(--accent-green);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.welcome-title {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 7vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-4);
    color: var(--white);
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-subtitle {
    font-size: clamp(1rem, 2.5vw, var(--text-lg));
    color: var(--gray-400);
    margin-bottom: var(--space-8);
    line-height: 1.6;
}

.welcome-subtitle em {
    color: var(--accent-green);
    font-style: normal;
    font-weight: 600;
}

/* Feature Preview Box */
.features-preview {
    background: rgba(30, 58, 95, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-8);
    text-align: left;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-2);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--space-1);
}

.feature-item strong {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--white);
}

.feature-item span {
    font-size: var(--text-xs);
    color: var(--gray-500);
}

/* Domain Tags */
.domains-preview {
    margin-bottom: var(--space-6);
}

.domains-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-3);
    display: block;
}

.domain-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
}

.domain-tag {
    font-size: var(--text-xs);
    color: var(--gray-300);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-subtle);
}

/* Trust Badges */
.trust-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.trust-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--gray-500);
}

.trust-badge svg {
    color: var(--gray-600);
}

/* Start Button */
.start-btn {
    padding: var(--space-4) var(--space-8);
    background: linear-gradient(135deg, var(--accent-green) 0%, #00d68f 100%);
    color: var(--dark);
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 20px rgba(6, 255, 165, 0.35);
    min-height: 56px;
}

.start-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(6, 255, 165, 0.45);
}

.start-btn:active {
    transform: translateY(-1px) scale(1);
}

.arrow-icon {
    transition: transform var(--transition-base);
}

.start-btn:hover .arrow-icon {
    transform: translateX(4px);
}

/* How It Works Note */
.how-it-works {
    margin-top: var(--space-6);
    padding: var(--space-4);
    background: rgba(6, 255, 165, 0.05);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-lg);
    max-width: 450px;
    margin-left: auto;
    margin-right: auto;
}

.how-it-works p {
    font-size: var(--text-sm);
    color: var(--gray-400);
    margin: 0;
    line-height: 1.6;
}

.how-it-works strong {
    color: var(--accent-green);
}

/* =================================================================
   QUIZ HEADER (During Assessment)
   ================================================================= */

.quiz-header {
    width: 100%;
    padding: var(--space-4) var(--space-6);
    background: rgba(10, 14, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
}

.quiz-header-inner {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.quiz-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.quiz-title span {
    background: var(--dna-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.progress-section {
    flex: 1;
    max-width: 400px;
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--dna-gradient);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: var(--radius-full);
}

.progress-text {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--gray-500);
    white-space: nowrap;
}

.exit-btn {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    color: var(--gray-500);
    background: none;
    border: 1px solid var(--border-subtle);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.exit-btn:hover {
    color: var(--gray-300);
    border-color: var(--border-default);
}

/* =================================================================
   ASSESSMENT CONTAINER (Question Content)
   ================================================================= */

#assessmentContainer {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: var(--space-6);
    padding-top: calc(80px + var(--space-8));
    min-height: 100vh;
}

/* Loading State */
.assessment-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: var(--space-4);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-subtle);
    border-top-color: var(--accent-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--gray-500);
}

/* =================================================================
   QUESTION DISPLAY
   ================================================================= */

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
    gap: var(--space-3);
}

.domain-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(6, 255, 165, 0.08);
    border: 1px solid rgba(6, 255, 165, 0.25);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.domain-icon {
    font-size: 1rem;
}

.domain-name {
    color: var(--accent-green);
}

.question-meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.difficulty-badge {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    text-transform: capitalize;
}

.difficulty-badge.basic {
    background: rgba(6, 255, 165, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(6, 255, 165, 0.3);
}

.difficulty-badge.intermediate {
    background: rgba(255, 214, 10, 0.1);
    color: var(--accent-yellow);
    border: 1px solid rgba(255, 214, 10, 0.3);
}

.difficulty-badge.advanced {
    background: rgba(230, 57, 70, 0.1);
    color: var(--accent-red);
    border: 1px solid rgba(230, 57, 70, 0.3);
}

.question-number {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--gray-500);
}

.question-text {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 700;
    line-height: 1.4;
    color: var(--white);
    margin-bottom: var(--space-8);
}

/* =================================================================
   ANSWER OPTIONS
   ================================================================= */

.answer-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
}

.answer-option {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: rgba(255, 255, 255, 0.02);
    border: 2px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: left;
    width: 100%;
    font-family: inherit;
}

.answer-option:hover {
    background: rgba(6, 255, 165, 0.05);
    border-color: rgba(6, 255, 165, 0.3);
    transform: translateX(4px);
}

.answer-option.selected {
    background: rgba(6, 255, 165, 0.1);
    border-color: var(--accent-green);
    box-shadow: 0 0 25px rgba(6, 255, 165, 0.15);
}

.option-key {
    display: none; /* Hidden but used for keyboard shortcuts */
}

.option-letter {
    width: 32px;
    height: 32px;
    min-width: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--gray-400);
    transition: all var(--transition-base);
}

.answer-option:hover .option-letter {
    border-color: rgba(6, 255, 165, 0.5);
    color: var(--accent-green);
}

.answer-option.selected .option-letter {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: var(--dark);
}

.option-text {
    font-size: var(--text-base);
    color: var(--gray-300);
    line-height: 1.5;
    flex: 1;
}

.answer-option.selected .option-text {
    color: var(--white);
}

/* =================================================================
   CONFIDENCE SLIDER
   ================================================================= */

.confidence-section {
    background: rgba(30, 58, 95, 0.2);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-6);
    animation: slideIn 0.3s ease;
}

.confidence-section.hidden {
    display: none;
}

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

.confidence-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.confidence-label {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--white);
}

.confidence-value {
    font-family: var(--font-mono);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--accent-green);
}

.confidence-slider-container {
    position: relative;
}

.confidence-slider {
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.confidence-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent-green);
    cursor: pointer;
    box-shadow: 0 0 15px rgba(6, 255, 165, 0.4);
    transition: transform var(--transition-fast);
}

.confidence-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.confidence-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent-green);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 15px rgba(6, 255, 165, 0.4);
}

.confidence-ticks {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2);
    padding: 0 var(--space-2);
}

.confidence-ticks .tick {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--gray-600);
}

.confidence-labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-1);
    padding: 0 var(--space-2);
    font-size: var(--text-xs);
    color: var(--gray-500);
}

/* =================================================================
   SUBMIT & NAVIGATION
   ================================================================= */

.submit-section {
    text-align: center;
    margin-bottom: var(--space-6);
}

.submit-btn {
    padding: var(--space-4) var(--space-10);
    background: linear-gradient(135deg, var(--accent-green) 0%, #00d68f 100%);
    color: var(--dark);
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 20px rgba(6, 255, 165, 0.35);
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(6, 255, 165, 0.45);
}

.submit-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

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

.nav-btn {
    padding: var(--space-3) var(--space-5);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--gray-400);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.nav-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Keyboard Hints */
.keyboard-hints {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: var(--gray-600);
}

.hint {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

kbd {
    display: inline-block;
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

/* =================================================================
   EXPLANATION PANEL
   ================================================================= */

.explanation-panel {
    background: rgba(30, 58, 95, 0.3);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    animation: slideIn 0.3s ease;
}

.explanation-result {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
}

.result-icon {
    font-size: 2rem;
}

.result-text {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
}

.result-text.correct {
    color: var(--accent-green);
}

.result-text.incorrect {
    color: var(--accent-red);
}

.explanation-content h4 {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--space-2);
}

.explanation-content p {
    font-size: var(--text-sm);
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.correct-answer {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--accent-green);
    background: rgba(6, 255, 165, 0.1);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    display: inline-block;
}

.continue-btn {
    padding: var(--space-3) var(--space-6);
    background: var(--dna-gradient);
    color: var(--dark);
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-top: var(--space-4);
}

.continue-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(6, 255, 165, 0.3);
}

/* =================================================================
   CALCULATING SCREEN
   ================================================================= */

.calculating-content {
    text-align: center;
    padding: var(--space-6);
}

.dna-animation {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--space-8);
}

.helix {
    width: 100%;
    height: 100%;
    position: relative;
    animation: rotate 3s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.strand {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 4px solid transparent;
    border-radius: 50%;
}

.strand-1 {
    border-top-color: var(--accent-green);
    border-bottom-color: var(--accent-green);
    animation: pulse-strand 1.5s ease-in-out infinite;
}

.strand-2 {
    border-left-color: var(--accent-red);
    border-right-color: var(--accent-red);
    animation: pulse-strand 1.5s ease-in-out infinite 0.75s;
}

@keyframes pulse-strand {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.7; }
}

.calculating-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-3);
}

.calculating-status {
    font-size: var(--text-base);
    color: var(--gray-400);
    margin-bottom: var(--space-8);
}

/* =================================================================
   EXIT MODAL
   ================================================================= */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--space-4);
}

.modal-overlay.hidden {
    display: none;
}

.modal-content {
    background: var(--gray-900);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.modal-content h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-2);
}

.modal-content p {
    color: var(--gray-400);
    margin-bottom: var(--space-6);
}

.modal-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
}

.modal-btn {
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-lg);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-btn.secondary {
    background: transparent;
    border: 1px solid var(--border-default);
    color: var(--gray-400);
}

.modal-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--white);
}

.modal-btn.primary {
    background: var(--accent-red);
    border: none;
    color: var(--white);
}

.modal-btn.primary:hover {
    background: #dc2626;
}

/* =================================================================
   UTILITIES
   ================================================================= */

.hidden {
    display: none !important;
}

/* =================================================================
   RESPONSIVE
   ================================================================= */

@media (max-width: 768px) {
    .quiz-header-inner {
        flex-wrap: wrap;
        gap: var(--space-3);
    }
    
    .quiz-title {
        order: -1;
        width: 100%;
    }
    
    .progress-section {
        flex: 1;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .feature-item {
        flex-direction: row;
        text-align: left;
    }
    
    #assessmentContainer {
        padding: var(--space-4);
        padding-top: calc(100px + var(--space-4));
    }
    
    .question-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .question-navigation {
        flex-direction: column;
    }
    
    .nav-btn {
        width: 100%;
        justify-content: center;
    }
    
    .keyboard-hints {
        display: none;
    }
}

@media (max-width: 480px) {
    .answer-option {
        padding: var(--space-3) var(--space-4);
    }
    
    .option-letter {
        width: 28px;
        height: 28px;
        min-width: 28px;
        font-size: var(--text-xs);
    }
    
    .domain-tags {
        justify-content: flex-start;
    }
}

/* =================================================================
   REDUCED MOTION
   ================================================================= */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}