/* Solar Tales - Interactive Space Weather Story Styles */
/* --- CHATBOT STYLES --- */

/* Utility class to hide the window initially */
.hidden {
    display: none !important;
}
/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color System */
    --primary-blue: #3B82F6;
    --secondary-teal: #14B8A6;
    --accent-orange: #F97316;
    --success-green: #10B981;
    --warning-yellow: #F59E0B;
    --error-red: #EF4444;
    
    /* Neutral Colors */
    --neutral-900: #111827;
    --neutral-800: #1F2937;
    --neutral-700: #374151;
    --neutral-600: #4B5563;
    --neutral-500: #6B7280;
    --neutral-400: #9CA3AF;
    --neutral-300: #D1D5DB;
    --neutral-200: #E5E7EB;
    --neutral-100: #F3F4F6;
    --neutral-50: #F9FAFB;
    
    /* Space Theme Colors */
    --cosmic-purple: #6366F1;
    --nebula-pink: #EC4899;
    --star-gold: #FBBF24;
    --space-black: #0F172A;
    --aurora-green: #10B981;
    --aurora-purple: #8B5CF6;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing System (8px base) */
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
    --space-5: 2.5rem;
    --space-6: 3rem;
    --space-8: 4rem;
    --space-10: 5rem;
    --space-12: 6rem;
    
    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Base Styles */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--space-black);
    color: var(--neutral-100);
    line-height: 1.5;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Animated Background */
.starfield-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: linear-gradient(135deg, 
        var(--space-black) 0%, 
        var(--neutral-900) 50%, 
        var(--cosmic-purple) 100%);
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    opacity: 0.8;
    animation: twinkle infinite ease-in-out;
}

.aurora-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('./assets/bg/aurora-overlay.svg') no-repeat center center;
    background-size: cover;
    opacity: 0.3;
    animation: aurora-drift 20s infinite ease-in-out;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

@keyframes aurora-drift {
    0%, 100% { transform: translateX(0) scale(1); }
    50% { transform: translateX(-10px) scale(1.05); }
}

/* App Container */
.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
}

/* Screen Management */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-slow);
}

.screen.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Landing Screen */
.landing-content {
    text-align: center;
    max-width: 600px;
    width: 100%;
}

.logo-container {
    margin-bottom: var(--space-8);
}

.sun-icon {
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, 
        var(--star-gold) 0%, 
        var(--accent-orange) 70%, 
        var(--error-red) 100%);
    border-radius: 50%;
    margin: 0 auto var(--space-4);
    position: relative;
    animation: sun-pulse 3s infinite ease-in-out;
}

.sun-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 140px;
    height: 140px;
    border: 2px solid var(--star-gold);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.3;
    animation: sun-rays 4s infinite linear;
}

@keyframes sun-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes sun-rays {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.main-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--star-gold), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
    line-height: 1.2;
}

.subtitle {
    font-size: var(--font-size-xl);
    color: var(--neutral-300);
    font-weight: 300;
    margin-bottom: var(--space-6);
}

.landing-buttons {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-6);
}

/* About Section */
.about-section {
    background: rgba(0, 0, 0, 0.8);
    border-radius: 16px;
    padding: var(--space-6);
    border: 1px solid var(--neutral-700);
    backdrop-filter: blur(10px);
    max-width: 500px;
    margin: 0 auto;
    transition: all var(--transition-normal);
}

.about-section.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
}

.about-text p {
    margin-bottom: var(--space-3);
    color: var(--neutral-200);
    line-height: 1.6;
}

/* Button Styles */
.btn {
    padding: var(--space-3) var(--space-6);
    border: none;
    border-radius: 12px;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    text-align: center;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--cosmic-purple));
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--neutral-100);
    border: 1px solid var(--neutral-600);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--neutral-500);
    transform: translateY(-1px);
}

.btn-small {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Story Screen */
.story-content {
    max-width: 1000px;
    width: 100%;
    margin: 0 auto;
}

.scene-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    align-items: center;
    margin-bottom: var(--space-6);
    background: rgba(0, 0, 0, 0.6);
    border-radius: 20px;
    padding: var(--space-6);
    backdrop-filter: blur(15px);
    border: 1px solid var(--neutral-800);
}

.scene-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.svg-container {
    width: 100%;
    max-width: 400px;
    animation: scene-float 6s infinite ease-in-out;
}

.svg-container svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

@keyframes scene-float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.scene-text h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--star-gold);
    line-height: 1.2;
}

.text-content {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    color: var(--neutral-200);
    margin-bottom: var(--space-4);
}

.text-content p {
    margin-bottom: var(--space-3);
}

.text-content strong {
    color: var(--aurora-green);
    font-weight: 600;
}

/* NASA Fact Box */
.nasa-fact {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1), 
        rgba(139, 92, 246, 0.1));
    border: 1px solid var(--primary-blue);
    border-radius: 12px;
    padding: var(--space-4);
    margin-top: var(--space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    transition: all var(--transition-normal);
}

.nasa-fact.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
}

.fact-icon {
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.fact-content {
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--neutral-200);
}

.fact-content strong {
    color: var(--primary-blue);
}

/* Story Controls */
.story-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 16px;
    padding: var(--space-4);
    backdrop-filter: blur(10px);
    border: 1px solid var(--neutral-800);
}

.progress-indicator {
    flex-grow: 1;
    margin-right: var(--space-4);
}

.progress-indicator span {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--neutral-400);
    margin-bottom: var(--space-1);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--neutral-700);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-blue), var(--cosmic-purple));
    border-radius: 3px;
    transition: width var(--transition-normal);
}

/* Quiz Screen */
.quiz-content {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

.quiz-header {
    text-align: center;
    margin-bottom: var(--space-8);
    background: rgba(0, 0, 0, 0.6);
    border-radius: 16px;
    padding: var(--space-6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--neutral-800);
}

.quiz-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--star-gold);
}

.quiz-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-lg);
    color: var(--neutral-300);
}

.score-display {
    background: linear-gradient(135deg, var(--success-green), var(--secondary-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.question-container {
    background: rgba(0, 0, 0, 0.6);
    border-radius: 20px;
    padding: var(--space-8);
    backdrop-filter: blur(15px);
    border: 1px solid var(--neutral-800);
}

.question-container h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--space-6);
    color: var(--neutral-100);
    line-height: 1.3;
}

.options-container {
    display: grid;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.option-btn {
    padding: var(--space-4) var(--space-5);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--neutral-700);
    border-radius: 12px;
    color: var(--neutral-200);
    font-size: var(--font-size-base);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-primary);
}

.option-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-blue);
    transform: translateX(4px);
}

.option-btn.correct {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--success-green);
    color: var(--success-green);
}

.option-btn.incorrect {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--error-red);
    color: var(--error-red);
}

.option-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

/* Feedback */
.feedback {
    background: rgba(0, 0, 0, 0.8);
    border-radius: 12px;
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    border-left: 4px solid var(--primary-blue);
    transition: all var(--transition-normal);
}

.feedback.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
}

.correct-feedback {
    color: var(--success-green);
    font-weight: 600;
}

.incorrect-feedback {
    color: var(--error-red);
    font-weight: 600;
}

/* Scoreboard Screen */
.scoreboard-content {
    text-align: center;
    max-width: 600px;
    width: 100%;
}

.badge-container {
    margin-bottom: var(--space-8);
    background: rgba(0, 0, 0, 0.6);
    border-radius: 20px;
    padding: var(--space-8);
    backdrop-filter: blur(15px);
    border: 1px solid var(--neutral-800);
}

.badge-icon {
    font-size: 80px;
    margin-bottom: var(--space-4);
    animation: badge-glow 2s infinite ease-in-out;
}

@keyframes badge-glow {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.5)); }
    50% { transform: scale(1.05); filter: drop-shadow(0 0 20px rgba(255, 215, 0, 0.8)); }
}

.badge-container h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--star-gold), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.final-score {
    margin-bottom: var(--space-8);
}

.final-score h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--neutral-200);
}

.score-circle {
    width: 120px;
    height: 120px;
    border: 6px solid var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    background: rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-slow);
}

.score-circle::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--primary-blue), transparent);
    animation: score-spin 2s linear infinite;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.score-circle.animate::before {
    opacity: 1;
}

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

.score-circle span {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--star-gold);
    position: relative;
    z-index: 1;
}

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

/* Credits Screen */
.credits-content {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 20px;
    padding: var(--space-8);
    backdrop-filter: blur(15px);
    border: 1px solid var(--neutral-800);
}

.credits-content h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    text-align: center;
    color: var(--star-gold);
}

.credits-section {
    margin-bottom: var(--space-6);
}

.credits-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--primary-blue);
}

.credits-section ul {
    list-style: none;
    padding-left: 0;
}

.credits-section li {
    padding: var(--space-2) 0;
    color: var(--neutral-200);
    line-height: 1.5;
}

.credits-section a {
    color: var(--secondary-teal);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.credits-section a:hover {
    color: var(--aurora-green);
    text-decoration: underline;
}

.credits-actions {
    text-align: center;
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--neutral-700);
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
    transition: all var(--transition-normal);
}

.modal.hidden {
    opacity: 0;
    visibility: hidden;
}

.modal-content {
    background: var(--neutral-900);
    border-radius: 16px;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid var(--neutral-700);
    animation: modal-appear var(--transition-normal) ease-out;
}

@keyframes modal-appear {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6);
    border-bottom: 1px solid var(--neutral-700);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--neutral-100);
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--neutral-400);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.close-btn:hover {
    background: var(--neutral-800);
    color: var(--neutral-200);
}

.modal-body {
    padding: var(--space-6);
}

/* Chart Container */
.chart-container {
    margin-bottom: var(--space-6);
    background: var(--neutral-800);
    border-radius: 12px;
    padding: var(--space-4);
}

.chart-caption {
    color: var(--neutral-300);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.chart-caption p {
    margin-bottom: var(--space-2);
}

.chart-caption a {
    color: var(--secondary-teal);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.chart-caption a:hover {
    color: var(--aurora-green);
    text-decoration: underline;
}

/* Responsive Design */

/* Tablet Styles (768px - 1024px) */
@media screen and (max-width: 1024px) {
    .scene-container {
        grid-template-columns: 1fr;
        gap: var(--space-4);
        text-align: center;
    }
    
    .scene-image {
        order: -1;
    }
    
    .main-title {
        font-size: var(--font-size-3xl);
    }
    
    .subtitle {
        font-size: var(--font-size-lg);
    }
    
    .screen {
        padding: var(--space-3);
    }
}

/* Mobile Styles (320px - 768px) */
@media screen and (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
        --font-size-xl: 1.125rem;
    }
    
    .screen {
        padding: var(--space-2);
    }
    
    .sun-icon {
        width: 80px;
        height: 80px;
    }
    
    .landing-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .scene-container {
        padding: var(--space-4);
        gap: var(--space-3);
    }
    
    .scene-text h2 {
        font-size: var(--font-size-2xl);
    }
    
    .text-content {
        font-size: var(--font-size-base);
    }
    
    .story-controls {
        flex-direction: column;
        gap: var(--space-3);
        text-align: center;
    }
    
    .progress-indicator {
        margin-right: 0;
    }
    
    .quiz-header,
    .question-container,
    .badge-container,
    .credits-content {
        padding: var(--space-4);
    }
    
    .score-actions,
    .landing-buttons {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--space-2);
    }
    
    .modal-header,
    .modal-body {
        padding: var(--space-4);
    }
    
    .badge-icon {
        font-size: 60px;
    }
    
    .score-circle {
        width: 100px;
        height: 100px;
    }
    
    .score-circle span {
        font-size: var(--font-size-2xl);
    }
}

/* Very Small Mobile (320px) */
@media screen and (max-width: 480px) {
    .nasa-fact,
    .about-section {
        padding: var(--space-3);
    }
    
    .fact-icon {
        font-size: var(--font-size-xl);
    }
    
    .options-container {
        gap: var(--space-2);
    }
    
    .option-btn {
        padding: var(--space-3) var(--space-4);
    }
    
    .text-content p {
        margin-bottom: var(--space-2);
    }
}

/* High contrast and reduced motion accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .sun-icon,
    .badge-icon,
    .svg-container {
        animation: none !important;
    }
}

@media (prefers-contrast: high) {
    :root {
        --neutral-800: #000000;
        --neutral-700: #333333;
        --neutral-600: #666666;
    }
    
    .btn-secondary {
        border-width: 2px;
    }
    
    .nasa-fact,
    .about-section,
    .scene-container,
    .quiz-header,
    .question-container {
        border-width: 2px;
    }
}

/* Focus styles for accessibility */
button:focus-visible,
.option-btn:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .starfield-bg,
    .aurora-overlay {
        display: none;
    }
    
    .screen {
        position: static;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        page-break-inside: avoid;
    }
    
    .screen:not(.active) {
        display: none;
    }
}