/* Apollo 13 Interactive Experience - Main Stylesheet */
/* Target: 2026 Elevate Scout Jamboree - NASA Tent, Apollo Table */
/* Presented by Ed Gruhl, Scout District Commissioner, Glacial Trails District */

/* ==================== CSS RESET ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ==================== CSS VARIABLES ==================== */
:root {
    /* Colors (from poster design system) */
    --nasa-blue: #0B3D91;
    --mission-white: #FFFFFF;
    --apollo-black: #000000;
    --crisis-red: #DC143C;
    --success-green: #2E7D32;
    --caution-yellow: #FFA000;
    --info-cyan: #00ACC1;

    /* Backgrounds */
    --bg-light: #F5F5F5;
    --bg-blue-light: #E3F2FD;
    --bg-yellow-light: #FFF9C4;
    --bg-green-light: #E8F5E9;

    /* Spacing */
    --space-xs: 0.5rem;    /* 8px */
    --space-sm: 1rem;      /* 16px */
    --space-md: 1.5rem;    /* 24px */
    --space-lg: 2rem;      /* 32px */
    --space-xl: 3rem;      /* 48px */
    --space-2xl: 4rem;     /* 64px */

    /* Typography */
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
                 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Courier New', Courier, monospace;

    --text-xs: 0.875rem;   /* 14px */
    --text-sm: 1rem;       /* 16px */
    --text-md: 1.125rem;   /* 18px */
    --text-lg: 1.5rem;     /* 24px */
    --text-xl: 2rem;       /* 32px */
    --text-2xl: 2.5rem;    /* 40px */
    --text-3xl: 3rem;      /* 48px */

    /* Layout */
    --max-width: 1200px;
    --content-width: 800px;
    --border-radius: 8px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);

    /* Transitions */
    --transition: 0.3s ease;
}

/* ==================== BASE STYLES ==================== */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    line-height: 1.6;
    color: var(--apollo-black);
    background: var(--mission-white);
}

@media (min-width: 768px) {
    body {
        font-size: var(--text-md);
    }
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: var(--space-sm);
    font-weight: 700;
}

h1 {
    font-size: var(--text-xl);
    color: var(--nasa-blue);
}

h2 {
    font-size: var(--text-lg);
    color: var(--nasa-blue);
}

h3 {
    font-size: var(--text-md);
}

@media (min-width: 768px) {
    h1 { font-size: var(--text-3xl); }
    h2 { font-size: var(--text-xl); }
    h3 { font-size: var(--text-lg); }
}

p {
    margin-bottom: var(--space-sm);
}

a {
    color: var(--info-cyan);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--nasa-blue);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==================== LAYOUT ==================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-lg);
    }
}

/* ==================== NAVIGATION ==================== */
.main-nav {
    background: var(--nasa-blue);
    color: var(--mission-white);
    padding: var(--space-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.main-nav a {
    color: var(--mission-white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    transition: background var(--transition);
    font-weight: 600;
}

.main-nav a:hover {
    background: rgba(255,255,255,0.2);
    text-decoration: none;
}

.nav-progress {
    font-weight: 600;
    font-size: var(--text-sm);
}

/* ==================== LANDING PAGE ==================== */
.landing {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.hero {
    background: linear-gradient(135deg, var(--nasa-blue) 0%, #1a5db8 100%);
    color: var(--mission-white);
    text-align: center;
    padding: var(--space-2xl) var(--space-sm);
}

.hero img {
    max-width: 200px;
    margin: 0 auto var(--space-lg);
    border-radius: 24px;
}

@media (min-width: 768px) {
    .hero img {
        max-width: 300px;
    }
}

.hero h1 {
    color: var(--mission-white);
    font-size: var(--text-2xl);
    margin-bottom: var(--space-sm);
}

@media (min-width: 768px) {
    .hero h1 {
        font-size: var(--text-3xl);
    }
}

.tagline {
    font-size: var(--text-md);
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .tagline {
        font-size: var(--text-lg);
    }
}

.mission-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding: var(--space-xl) var(--space-sm);
    max-width: var(--max-width);
    margin: 0 auto;
}

@media (min-width: 640px) {
    .mission-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .mission-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat {
    text-align: center;
    padding: var(--space-lg);
    background: var(--bg-light);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}

.stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: var(--text-3xl);
    display: block;
    margin-bottom: var(--space-sm);
}

.stat-value {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--nasa-blue);
    display: block;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--text-sm);
    color: #666;
    display: block;
}

.cta {
    text-align: center;
    padding: var(--space-xl) var(--space-sm);
    background: var(--bg-light);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 500px;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

/* ==================== BUTTONS ==================== */
.btn-primary,
.btn-secondary,
.btn-next,
.btn-prev,
.btn-choose {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    font-size: var(--text-sm);
    text-decoration: none;
}

.btn-primary {
    background: var(--nasa-blue);
    color: var(--mission-white);
}

.btn-primary:hover {
    background: #0d4fa3;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.btn-secondary {
    background: var(--mission-white);
    color: var(--nasa-blue);
    border: 2px solid var(--nasa-blue);
}

.btn-secondary:hover {
    background: var(--nasa-blue);
    color: var(--mission-white);
    text-decoration: none;
}

.btn-choose {
    background: var(--info-cyan);
    color: var(--mission-white);
    width: 100%;
    margin-top: var(--space-sm);
}

.btn-choose:hover {
    background: #0097a7;
    text-decoration: none;
}

/* ==================== SLIDES ==================== */
.slide-container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-sm);
    min-height: 60vh;
}

@media (min-width: 768px) {
    .slide-container {
        padding: var(--space-xl) var(--space-lg);
    }
}

.slide-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 3px solid var(--nasa-blue);
}

.slide-type {
    display: inline-block;
    background: var(--info-cyan);
    color: var(--mission-white);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--border-radius);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.timestamp {
    display: block;
    font-family: var(--font-mono);
    color: #666;
    font-size: var(--text-sm);
    margin-top: var(--space-xs);
}

.slide-image {
    margin: var(--space-xl) 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.slide-image img {
    width: 100%;
}

figcaption {
    padding: var(--space-sm);
    background: var(--bg-light);
    font-size: var(--text-sm);
    color: #666;
    text-align: center;
    font-style: italic;
}

/* ==================== NARRATIVE SLIDES ==================== */
.event-list {
    list-style: none;
    margin: var(--space-lg) 0;
}

.event-list li {
    padding: var(--space-sm);
    margin-bottom: var(--space-sm);
    background: var(--bg-light);
    border-left: 4px solid var(--info-cyan);
    border-radius: var(--border-radius);
}

.event-list strong {
    color: var(--nasa-blue);
    font-family: var(--font-mono);
    font-weight: 700;
}

/* ==================== DECISION SLIDES ==================== */
.situation {
    background: var(--bg-yellow-light);
    border-left: 4px solid var(--caution-yellow);
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
    border-radius: var(--border-radius);
}

.situation h2 {
    color: var(--apollo-black);
    margin-bottom: var(--space-md);
}

.situation ul {
    list-style: none;
}

.situation li {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    position: relative;
}

.situation li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--caution-yellow);
    font-weight: bold;
}

.options {
    display: grid;
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}

@media (min-width: 768px) {
    .options {
        grid-template-columns: 1fr 1fr;
    }
}

.option {
    background: var(--bg-light);
    border: 3px solid var(--info-cyan);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    transition: all var(--transition);
    cursor: pointer;
}

.option:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--nasa-blue);
}

.option.selected {
    border-color: var(--nasa-blue);
    background: var(--bg-blue-light);
    box-shadow: var(--shadow-md);
}

.option h3 {
    color: var(--nasa-blue);
    font-size: var(--text-lg);
    margin-bottom: var(--space-xs);
}

.option-subtitle {
    color: #666;
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
    font-style: italic;
}

.option-details {
    margin-top: var(--space-md);
}

.pros, .cons {
    margin-top: var(--space-md);
}

.pros h4 {
    color: var(--success-green);
    margin-bottom: var(--space-sm);
}

.cons h4 {
    color: var(--crisis-red);
    margin-bottom: var(--space-sm);
}

.pros ul, .cons ul {
    list-style: none;
}

.pros li {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-xs);
    position: relative;
}

.pros li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: bold;
}

.cons li {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-xs);
    position: relative;
}

.cons li::before {
    content: '✕';
    position: absolute;
    left: 0;
    color: var(--crisis-red);
    font-weight: bold;
}

.decision-result {
    background: var(--bg-blue-light);
    border: 3px solid var(--nasa-blue);
    border-radius: var(--border-radius);
    padding: var(--space-xl);
    margin: var(--space-xl) 0;
}

.decision-result.hidden {
    display: none;
}

.result-choice {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--nasa-blue);
    margin-bottom: var(--space-md);
}

blockquote {
    border-left: 4px solid var(--info-cyan);
    padding-left: var(--space-md);
    margin: var(--space-lg) 0;
    font-style: italic;
    color: #666;
}

cite {
    display: block;
    margin-top: var(--space-xs);
    font-size: var(--text-sm);
    color: #999;
}

/* ==================== INFO SLIDES ==================== */
.info-grid {
    display: grid;
    gap: var(--space-xl);
    margin: var(--space-xl) 0;
}

@media (min-width: 768px) {
    .info-grid {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

.info-section {
    margin-bottom: var(--space-md);
    border: 2px solid var(--bg-light);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.info-section summary {
    background: var(--nasa-blue);
    color: var(--mission-white);
    padding: var(--space-md);
    cursor: pointer;
    font-weight: 700;
    user-select: none;
    transition: background var(--transition);
}

.info-section summary:hover {
    background: #0d4fa3;
}

.info-section[open] summary {
    background: var(--info-cyan);
}

.info-section ul {
    padding: var(--space-md);
    background: var(--mission-white);
}

.info-section li {
    margin-bottom: var(--space-xs);
}

/* ==================== FOOTER NAVIGATION ==================== */
.slide-nav {
    background: var(--bg-light);
    padding: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    border-top: 3px solid var(--nasa-blue);
}

.btn-next, .btn-prev {
    background: var(--nasa-blue);
    color: var(--mission-white);
    padding: var(--space-sm) var(--space-lg);
}

.btn-next:hover, .btn-prev:hover {
    background: #0d4fa3;
    transform: translateY(-2px);
}

/* ==================== TIMELINE PAGE ==================== */
.timeline {
    position: relative;
    padding-left: 3rem;
    margin: var(--space-xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--nasa-blue);
}

.timeline-event {
    position: relative;
    margin-bottom: var(--space-2xl);
}

.event-marker {
    position: absolute;
    left: -2.25rem;
    width: 3rem;
    height: 3rem;
    background: var(--nasa-blue);
    color: var(--mission-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: var(--text-sm);
    box-shadow: var(--shadow-md);
}

.timeline-event.crisis .event-marker {
    background: var(--crisis-red);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.event-content {
    background: var(--bg-light);
    padding: var(--space-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.event-content h3 {
    margin-bottom: var(--space-md);
}

.event-links {
    list-style: none;
}

.event-links li {
    margin-bottom: var(--space-xs);
}

.event-links a {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: var(--mission-white);
    border-radius: var(--border-radius);
    transition: all var(--transition);
}

.event-links a:hover {
    background: var(--info-cyan);
    color: var(--mission-white);
    text-decoration: none;
}

/* ==================== LEARN MORE (EXPANDABLE) ==================== */
.learn-more {
    margin-top: var(--space-lg);
    border: 2px solid var(--info-cyan);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.learn-more summary {
    background: var(--bg-blue-light);
    padding: var(--space-md);
    cursor: pointer;
    font-weight: 600;
    color: var(--nasa-blue);
    user-select: none;
}

.learn-more summary:hover {
    background: var(--info-cyan);
    color: var(--mission-white);
}

.learn-more[open] summary {
    border-bottom: 2px solid var(--info-cyan);
}

.learn-more p, .learn-more ul {
    padding: var(--space-md);
}

/* ==================== UTILITY CLASSES ==================== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-xl {
    margin-top: var(--space-xl);
}

.mb-xl {
    margin-bottom: var(--space-xl);
}

/* ==================== ACCESSIBILITY ==================== */
:focus {
    outline: 3px solid var(--info-cyan);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* ==================== PROGRESSIVE FEEDBACK SYSTEM ==================== */

/* Alignment Indicator (shown after decision) */
.alignment-indicator {
    display: none;
    margin: 1.5rem 0;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alignment-indicator.matched {
    background: var(--bg-green-light);
    border-color: var(--success-green);
}

.alignment-indicator.different {
    background: var(--bg-yellow-light);
    border-color: var(--caution-yellow);
}

.alignment-badge {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alignment-indicator p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
}

/* Decision Tracker (top navigation) */
.decision-tracker {
    display: none; /* Hidden by default, shown by JS when first decision is made */
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--nasa-blue);
}

.tracker-label {
    font-weight: 600;
    white-space: nowrap;
}

.decision-badges {
    display: flex;
    gap: 0.25rem;
}

.badge {
    display: inline-block;
    width: 28px;
    height: 28px;
    text-align: center;
    line-height: 28px;
    border-radius: 50%;
    cursor: help;
    transition: transform 0.2s ease;
    font-size: 1rem;
}

.badge.matched {
    background: rgba(46, 125, 50, 0.15);
}

.badge.different {
    background: rgba(255, 160, 0, 0.15);
}

.badge.pending {
    background: rgba(0, 0, 0, 0.05);
    opacity: 0.5;
}

.badge:hover {
    transform: scale(1.15);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .decision-tracker {
        font-size: 0.75rem;
    }

    .tracker-label {
        display: none; /* Hide label on mobile to save space */
    }

    .badge {
        width: 24px;
        height: 24px;
        line-height: 24px;
        font-size: 0.875rem;
    }
}

/* Score Summary Modal */
.score-summary-overlay {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.summary-card {
    background: var(--mission-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    max-height: 90vh;
    overflow-y: auto;
}

.summary-card h3 {
    color: var(--nasa-blue);
    margin-bottom: 1.5rem;
    text-align: center;
}

.summary-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.summary-stats .stat {
    text-align: center;
    padding: 1rem;
    background: var(--bg-blue-light);
    border-radius: var(--border-radius);
}

.summary-stats .stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--nasa-blue);
    margin-bottom: 0.25rem;
}

.summary-stats .stat-label {
    display: block;
    font-size: 0.875rem;
    color: #666;
}

.decisions-list {
    margin-bottom: 1.5rem;
}

.decision-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: var(--border-radius);
    background: var(--bg-light);
}

.decision-item.matched {
    background: var(--bg-green-light);
}

.decision-item.different {
    background: var(--bg-yellow-light);
}

.decision-item .icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.decision-item .name {
    font-weight: 600;
}

.summary-note {
    text-align: center;
    font-size: 0.875rem;
    color: #666;
    margin-bottom: 1rem;
}

.summary-card button {
    width: 100%;
    padding: 1rem;
    background: var(--nasa-blue);
    color: var(--mission-white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease;
}

.summary-card button:hover {
    background: #0a2f6f;
}

/* ==================== PRINT STYLES ==================== */
@media print {
    .main-nav,
    .slide-nav,
    .btn-choose,
    .decision-tracker,
    .alignment-indicator,
    .score-summary-overlay {
        display: none;
    }

    body {
        font-size: 12pt;
    }

    .slide-container {
        max-width: 100%;
    }
}

/* Running score in the decision tracker */
.tracker-score {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--nasa-blue);
    margin-left: 0.5rem;
    white-space: nowrap;
    align-self: center;
}

/* Locked decision buttons — the call is made, no do-overs */
.btn-choose:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}
.option.selected .btn-choose:disabled {
    opacity: 1;
}

/* "Sources for Skeptics" citation block on decision results */
.sources-box {
    background: var(--bg-blue-light, #eef4fb);
    border-left: 4px solid var(--nasa-blue, #0B3D91);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    margin-top: 1.5rem;
}
.sources-box h3 {
    margin-bottom: 0.5rem;
}
.sources-box ul {
    margin: 0.75rem 0 0 1.25rem;
}
.sources-box li {
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}