/* ===================================
   CHYSTER - Mobile-First CSS
   Modern landing page optimized for mobile
   =================================== */

/* CSS Variables - Design system */
:root {
    /* Colors - Mobile optimized palette */
    --color-primary: #FF2E63;
    --color-secondary: #08F7FE;
    --color-dark: #0A0A0A;
    --color-surface: #1A1A1A;
    --color-text: #FFFFFF;
    --color-text-muted: #A0A0A0;
    --color-success: #00FF88;
    --color-warning: #FFB800;
    
    /* Typography - Mobile optimized scales */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Font sizes - Mobile first */
    --text-xs: 0.75rem;    /* 12px */
    --text-sm: 0.875rem;   /* 14px */
    --text-base: 1rem;     /* 16px - minimum for mobile */
    --text-lg: 1.125rem;   /* 18px */
    --text-xl: 1.25rem;    /* 20px */
    --text-2xl: 1.5rem;    /* 24px */
    --text-3xl: 1.875rem;  /* 30px */
    --text-4xl: 2.25rem;   /* 36px */
    
    /* Spacing - 8px grid system */
    --space-1: 0.25rem;    /* 4px */
    --space-2: 0.5rem;     /* 8px */
    --space-3: 0.75rem;    /* 12px */
    --space-4: 1rem;       /* 16px */
    --space-5: 1.25rem;    /* 20px */
    --space-6: 1.5rem;     /* 24px */
    --space-8: 2rem;       /* 32px */
    --space-10: 2.5rem;    /* 40px */
    --space-12: 3rem;      /* 48px */
    --space-16: 4rem;      /* 64px */
    
    /* Touch targets - Minimum 44px */
    --touch-target: 44px;
    
    /* Borders and radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows - Subtle for mobile */
    --shadow-sm: 0 1px 2px 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-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* Reset and base styles */
*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Container - Mobile first */
.container {
    width: 100%;
    max-width: 100%;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
    margin-left: auto;
    margin-right: auto;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: var(--space-4);
    background: var(--color-primary);
    color: white;
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}

.section-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-8);
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Header - Mobile optimized */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

/* Logo */
.logo {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: var(--text-xl);
    line-height: 1;
}

.logo__text {
    color: var(--color-primary);
    display: block;
}

.logo__subtitle {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    font-weight: 400;
}

/* Navigation - Mobile first */
.nav__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target);
    height: var(--touch-target);
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.nav__toggle:hover,
.nav__toggle:focus {
    background: rgba(255, 255, 255, 0.1);
}

.hamburger {
    width: 20px;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: transform var(--transition-base);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

.nav__menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    list-style: none;
    padding: var(--space-6) 0;
}

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

.nav__link {
    display: block;
    padding: var(--space-4) var(--space-6);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    min-height: var(--touch-target);
    display: flex;
    align-items: center;
}

.nav__link:hover,
.nav__link:focus {
    color: var(--color-primary);
}

/* Hero section - Mobile optimized */
.hero {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
    background: linear-gradient(135deg, var(--color-dark) 0%, #1A0A1A 100%);
    text-align: center;
}

.hero__title {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

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

.hero__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-10);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* Player selector - Touch optimized */
.player-selector {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-10);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.player-selector__label {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
    text-align: center;
}

.player-selector__controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.player-count {
    background: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-xl);
    font-weight: 600;
    padding: var(--space-3) var(--space-5);
    text-align: center;
    width: 80px;
}

.card-target {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-align: center;
}

.card-target strong {
    color: var(--color-primary);
    font-size: var(--text-lg);
}

/* Warning message */
.warning-message {
    background: linear-gradient(135deg, rgba(220, 38, 127, 0.1), rgba(220, 38, 127, 0.2));
    border: 1px solid rgba(220, 38, 127, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-top: var(--space-4);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-text);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-smooth);
}

.warning-message.visible {
    opacity: 1;
    transform: translateY(0);
}

.warning-message::before {
    content: '⚠️';
    font-size: var(--text-lg);
    margin-right: var(--space-2);
}

.warning-message::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Buttons - Touch friendly */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--touch-target);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.btn--primary:hover,
.btn--primary:focus {
    background: #E02556;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn--secondary:hover,
.btn--secondary:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn--counter {
    width: var(--touch-target);
    height: var(--touch-target);
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    font-size: var(--text-lg);
    font-weight: 600;
}

.btn--counter:hover,
.btn--counter:focus {
    background: #E02556;
    transform: scale(1.05);
}

.cta-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

/* Quick start section */
.quick-start {
    padding: var(--space-16) 0;
    background: var(--color-surface);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.step {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--color-dark);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.step__number {
    width: var(--touch-target);
    height: var(--touch-target);
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.step__title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.step p {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* Rules section - Collapsible for mobile */
.rules {
    padding: var(--space-16) 0;
    background: var(--color-dark);
}

/* Rule navigation - Quick access */
.rule-nav {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-8);
}

.rule-nav__link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition-base);
    min-height: var(--touch-target);
    position: relative;
    overflow: hidden;
}

.rule-nav__link:hover,
.rule-nav__link:focus {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 46, 99, 0.3);
}

.rule-nav__link:active {
    transform: translateY(0);
}

.rule-nav__icon {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
    display: block;
}

.rule-nav__text {
    font-size: var(--text-xs);
    font-weight: 500;
    text-align: center;
    line-height: 1.2;
}

/* Game Timeline */
.game-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    position: relative;
}

/* Timeline steps */
.timeline-step {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    scroll-margin-top: calc(var(--space-16) + 60px);
}

.timeline-step--chyster {
    background: linear-gradient(135deg, var(--color-surface), rgba(255, 46, 99, 0.1));
    border-color: rgba(255, 46, 99, 0.3);
}

.step-header {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.timeline-step--chyster .step-number {
    background: linear-gradient(135deg, var(--color-primary), #FF6B35);
    font-size: var(--text-xl);
}

.step-title {
    margin: 0;
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text);
}

.step-subtitle {
    margin: var(--space-1) 0 0 0;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: 400;
}

.step-content {
    padding: var(--space-6);
}

.step-description,
.step-question {
    font-size: var(--text-base);
    color: var(--color-text);
    margin-bottom: var(--space-4);
    font-weight: 500;
    text-align: center;
}

/* Choice branches */
.choice-branches {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.branch {
    background: var(--color-dark);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.branch-header {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-4);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.branch-label {
    font-weight: 600;
    font-size: var(--text-lg);
    color: var(--color-primary);
}

.branch-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.branch-content {
    padding: var(--space-5);
}

.branch-content h4,
.branch-content h5 {
    margin: 0 0 var(--space-3) 0;
    color: var(--color-text);
    font-weight: 600;
}

.branch-content h4 {
    font-size: var(--text-lg);
}

.branch-content h5 {
    font-size: var(--text-base);
}

.branch-content p {
    margin: 0 0 var(--space-3) 0;
    color: var(--color-text-muted);
}

/* Color choices */
.color-choices {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin: var(--space-4) 0;
}

.color-choice {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-base);
}

.color-choice.color-red {
    background: rgba(239, 68, 68, 0.2);
    color: #FCA5A5;
    border: 1px solid rgba(239, 68, 68, 0.4);
}

.color-choice.color-black {
    background: rgba(75, 85, 99, 0.3);
    color: #D1D5DB;
    border: 1px solid rgba(75, 85, 99, 0.5);
}

.choice-or {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: 500;
}

/* Strategic choices */
.strategic-choices {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.choice-option {
    text-align: left;
    padding: var(--space-2) var(--space-3);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--space-2);
}

.choice-option p {
    margin: 0;
    color: var(--color-text);
    font-size: var(--text-sm);
}

/* Sub-bullets for indented choice options */
.choice-option.sub-bullet {
    margin-left: var(--space-4);
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid rgba(255, 255, 255, 0.2);
}

.choice-option.sub-bullet p {
    color: var(--color-text-muted);
    font-size: var(--text-xs);
}

.choice-or {
    text-align: center;
    font-weight: 600;
    color: var(--color-primary);
    padding: var(--space-2) 0;
}

/* Result outcomes */
.result-outcomes {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.outcome {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border-left: 4px solid;
}

.outcome h4 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-base);
    font-weight: 600;
}

.outcome ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.outcome li {
    margin-bottom: var(--space-1);
    font-size: var(--text-sm);
    color: var(--color-text);
}

.outcome-success {
    background: rgba(34, 197, 94, 0.1);
    border-color: #22C55E;
}

.outcome-success h4 {
    color: #4ADE80;
}

.outcome-failure {
    background: rgba(239, 68, 68, 0.1);
    border-color: #EF4444;
}

.outcome-failure h4 {
    color: #F87171;
}

.outcome-bonus {
    background: rgba(245, 158, 11, 0.1);
    border-color: #F59E0B;
}

.outcome-bonus h4 {
    color: #FCD34D;
}

.outcome-bonus p {
    margin: 0;
    color: var(--color-text);
    font-size: var(--text-sm);
}

/* Advanced rules */
.advanced-rules {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-6);
}

.advanced-rules h4 {
    margin: 0 0 var(--space-3) 0;
    font-size: var(--text-base);
    color: var(--color-text);
    font-weight: 600;
}

.advanced-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.advanced-list li {
    margin-bottom: var(--space-2);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* Special exceptions */
.special-exceptions {
    background: rgba(245, 158, 11, 0.05);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.special-exceptions h4 {
    margin: 0 0 var(--space-4) 0;
    font-size: var(--text-base);
    color: #FCD34D;
    font-weight: 600;
}

.exception-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.exception-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    padding: var(--space-4);
}

.exception-item h5 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-sm);
    color: var(--color-text);
    font-weight: 600;
}

.exception-item ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.exception-item li {
    margin-bottom: var(--space-1);
    color: var(--color-text-muted);
    font-size: var(--text-xs);
}

/* Chyster content */
.chyster-objective,
.chyster-power,
.chyster-royale {
    background: rgba(255, 46, 99, 0.05);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    border: 1px solid rgba(255, 46, 99, 0.2);
    margin-bottom: var(--space-4);
}

.chyster-royale {
    background: linear-gradient(135deg, rgba(255, 46, 99, 0.05), rgba(8, 247, 254, 0.05));
    border-color: rgba(8, 247, 254, 0.3);
}

.chyster-objective h4,
.chyster-power h4,
.chyster-royale h4 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-base);
    color: var(--color-text);
    font-weight: 600;
}

.chyster-power ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.chyster-power li {
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text);
    position: relative;
    padding-left: var(--space-4);
}

.chyster-power li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

/* Responsive design */
@media (min-width: 768px) {
    .rule-nav {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .choice-branches {
        flex-direction: row;
    }
    
    .strategic-choices {
        flex-direction: row;
        align-items: center;
    }
    
    .exception-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Sub-navigation for failure outcomes */
.sub-situation-nav {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3);
    margin: var(--space-4) 0;
}

.sub-situation-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.sub-situation-card:hover {
    background: rgba(255, 46, 99, 0.1);
    border-color: rgba(255, 46, 99, 0.3);
    transform: translateY(-2px);
}

/* Active state for deployed section */
.sub-situation-card.active {
    background: linear-gradient(135deg, rgba(255, 46, 99, 0.15), rgba(255, 107, 53, 0.1));
    border: 2px solid var(--color-primary);
    box-shadow: 0 4px 16px rgba(255, 46, 99, 0.25);
    transform: translateY(-3px);
}

.sub-situation-card.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), #FF6B35);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.sub-situation-card.active h5 {
    color: var(--color-primary);
    font-weight: 700;
}

.sub-situation-card.active p {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.sub-situation-card h5 {
    margin: 0 0 var(--space-1) 0;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
}

.sub-situation-card p {
    margin: 0;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* Expand indicator */
.expand-indicator {
    position: absolute;
    top: 50%;
    right: var(--space-3);
    transform: translateY(-50%);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    transition: all var(--transition-base);
}

.sub-situation-card.active .expand-indicator {
    transform: translateY(-50%) rotate(180deg);
    color: var(--color-primary);
}

.sub-situation-card:hover .expand-indicator {
    color: var(--color-text);
}

/* Sub-sections */
.sub-section {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin: var(--space-3) 0;
    border-left: 4px solid var(--color-primary);
    border-top: 2px solid var(--color-primary);
    box-shadow: 0 2px 8px rgba(255, 46, 99, 0.1);
    animation: slideIn 0.3s ease-out;
}

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

.sub-section h5 {
    margin: 0 0 var(--space-3) 0;
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
}

.sub-section h6 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
}

.sub-section ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.sub-section li {
    margin-bottom: var(--space-2);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* Special navigation links */
.special-link {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    background: linear-gradient(135deg, var(--color-primary), #FF6B35);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    transition: all var(--transition-fast);
    margin-left: var(--space-2);
}

.special-link:hover,
.special-link:focus {
    background: linear-gradient(135deg, #E02556, #FF6B35);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 46, 99, 0.3);
}

.special-link:active {
    transform: translateY(0);
}

/* Bonus and system explanations */
.bonus-explanation,
.system-explanation {
    background: rgba(245, 158, 11, 0.1);
    border-radius: var(--radius-sm);
    padding: var(--space-3);
    margin: var(--space-3) 0;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.system-explanation {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
}

.bonus-explanation h6,
.system-explanation h6 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
}

/* Sub-bullets for indented list items */
.sub-bullet {
    padding-left: var(--space-4) !important;
    color: var(--color-text-muted) !important;
    font-size: var(--text-xs) !important;
    position: relative;
}

/* Exceptions and powers sections */
.exceptions-section,
.powers-section {
    margin: var(--space-4) 0;
}

.exceptions-section h6,
.powers-section h6 {
    margin: 0 0 var(--space-3) 0;
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.power-details {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3);
}

.power-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    padding: var(--space-3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.power-item h6 {
    margin: 0 0 var(--space-1) 0;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
}

.power-item p {
    margin: 0;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    line-height: 1.4;
}

.power-item p em {
    color: var(--color-primary);
    font-style: italic;
    font-weight: 500;
}

/* Responsive for sub-sections */
@media (min-width: 768px) {
    .sub-situation-nav {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .power-details {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Game Timeline - New rules design */
.game-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.timeline-step {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    position: relative;
}

.timeline-step--chyster {
    background: linear-gradient(135deg, var(--color-surface), rgba(255, 46, 99, 0.1));
    border-color: rgba(255, 46, 99, 0.3);
}

.timeline-step--final {
    background: linear-gradient(135deg, var(--color-surface), rgba(8, 247, 254, 0.1));
    border-color: rgba(8, 247, 254, 0.3);
}

.step-header {
    padding: var(--space-5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.timeline-step--chyster .step-number {
    background: linear-gradient(135deg, var(--color-primary), #FF6B35);
    font-size: var(--text-xl);
}

.step-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin: 0;
    color: var(--color-text);
}

.step-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0;
    font-weight: 500;
}

.step-content {
    padding: var(--space-5);
}

.step-description,
.step-question {
    font-size: var(--text-base);
    color: var(--color-text);
    margin-bottom: var(--space-4);
    text-align: center;
    font-weight: 500;
}

/* Choice branches */
.choice-branches {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.branch {
    background: var(--color-dark);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.branch-header {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-3);
    text-align: center;
}

.branch-label {
    font-weight: 700;
    font-size: var(--text-lg);
    color: var(--color-primary);
}

.branch-subtitle {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

.branch-content {
    padding: var(--space-4);
}

.branch-content h4 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-base);
    color: var(--color-text);
}

.branch-content h5 {
    margin: 0 0 var(--space-1) 0;
    font-size: var(--text-sm);
    color: var(--color-text);
    font-weight: 600;
}

.color-choices {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.color-choice {
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--text-sm);
}

.color-choice.color-red {
    background: rgba(220, 38, 127, 0.2);
    color: #FF6B6B;
}

.color-choice.color-black {
    background: rgba(0, 0, 0, 0.3);
    color: var(--color-text);
}

.choice-or {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: 500;
}

.strategic-choices {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.choice-option {
    text-align: center;
    padding: var(--space-3);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
}

/* Results and outcomes */
.result-outcomes {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.outcome {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border-left: 4px solid;
}

.outcome-success {
    background: rgba(34, 197, 94, 0.1);
    border-left-color: #22C55E;
}

.outcome-failure {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: #EF4444;
}

.outcome-bonus {
    background: rgba(245, 158, 11, 0.1);
    border-left-color: #F59E0B;
}

.outcome h4 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-base);
    font-weight: 600;
}

.outcome ul {
    margin: 0;
    padding-left: var(--space-4);
    list-style: none;
}

.outcome li {
    margin-bottom: var(--space-1);
    position: relative;
}

.outcome li::before {
    content: '';
    position: absolute;
    left: -var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: currentColor;
}

/* Advanced rules */
.advanced-rules,
.special-exceptions {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.advanced-rules h4,
.special-exceptions h4 {
    margin: 0 0 var(--space-3) 0;
    font-size: var(--text-base);
    color: var(--color-text);
    font-weight: 600;
}

.advanced-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.advanced-list li {
    margin-bottom: var(--space-2);
    color: var(--color-text);
    font-size: var(--text-sm);
}

.exception-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.exception-item h5 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-sm);
    color: var(--color-text);
    font-weight: 600;
}

.exception-item ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.exception-item li {
    margin-bottom: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* Chyster specific styles */
.chyster-objective,
.chyster-power,
.chyster-royale {
    background: rgba(255, 46, 99, 0.05);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    border: 1px solid rgba(255, 46, 99, 0.2);
}

.chyster-royale {
    background: linear-gradient(135deg, rgba(255, 46, 99, 0.05), rgba(8, 247, 254, 0.05));
    border-color: rgba(8, 247, 254, 0.3);
}

.chyster-objective h4,
.chyster-power h4,
.chyster-royale h4 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-base);
    color: var(--color-text);
    font-weight: 600;
}

.chyster-power ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.chyster-power li {
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text);
    position: relative;
    padding-left: var(--space-4);
}

.chyster-power li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

/* Responsive design for timeline */
@media (min-width: 768px) {
    .choice-branches {
        grid-template-columns: 1fr 1fr;
    }
    
    .exception-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .strategic-choices {
        flex-direction: row;
        align-items: center;
        justify-content: space-around;
    }
    
    .color-choices {
        gap: var(--space-6);
    }
}

.chyster-bonus {
    background: rgba(8, 247, 254, 0.1);
    border-left: 3px solid var(--color-secondary);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    margin-top: var(--space-4);
    font-size: var(--text-sm);
}

/* Special cards - Simple mobile grid */
.special-cards {
    padding: var(--space-16) 0;
    background: var(--color-surface);
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.card-simple {
    background: var(--color-dark);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-4);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    min-height: 140px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.card-simple:hover,
.card-simple:focus {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.card-simple__front {
    margin-bottom: var(--space-3);
}

.card-rank {
    font-size: var(--text-3xl);
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-text);
}

.card-rank--red {
    color: var(--color-primary);
}

.card-simple__info h4 {
    font-size: var(--text-base);
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.card-simple__info p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* Footer */
.footer {
    padding: var(--space-10) 0;
    background: var(--color-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

.footer__text {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.footer__legal {
    color: var(--color-text-muted);
    font-size: var(--text-xs);
}

/* Progressive enhancement for larger screens */
@media (min-width: 768px) {
    .container {
        max-width: 768px;
        padding-left: var(--space-6);
        padding-right: var(--space-6);
    }
    
    .nav__toggle {
        display: none;
    }
    
    .nav__menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        background: none;
        border: none;
        padding: 0;
        display: flex;
        gap: var(--space-6);
    }
    
    .nav__link {
        padding: var(--space-2) 0;
        min-height: auto;
    }
    
    .hero__title {
        font-size: 3.5rem;
    }
    
    .cta-group {
        flex-direction: row;
        justify-content: center;
    }
    
    .steps {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }
    
    .cards-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .rule-accordion {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .rule-nav {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .choice-branches {
        grid-template-columns: 1fr 1fr;
    }
    
    .exception-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .strategic-choices {
        flex-direction: row;
        align-items: center;
        justify-content: space-around;
    }
    
    .color-choices {
        gap: var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 1024px;
        padding-left: var(--space-8);
        padding-right: var(--space-8);
    }
    
    .hero__title {
        font-size: 4rem;
    }
    
    .hero__subtitle {
        font-size: var(--text-xl);
        max-width: 600px;
    }
}

/* Dark mode is default, but we can add light mode support */
@media (prefers-color-scheme: light) {
    :root {
        --color-dark: #FFFFFF;
        --color-surface: #F8F9FA;
        --color-text: #1A1A1A;
        --color-text-muted: #6B7280;
    }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn--secondary {
        border-width: 2px;
    }
    
    .card-simple {
        border-width: 2px;
    }
}

/* Focus styles for better accessibility */
*:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Ensure touch targets are large enough */
@media (pointer: coarse) {
    .btn,
    .rule-header,
    .card-simple,
    .nav__link {
        min-height: var(--touch-target);
    }
}

/* ===================================
   ACCORDION PROGRESSIVE ENHANCEMENT
   =================================== */

.accordion-step {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-4);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s ease;
}

.accordion-step:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.accordion-header {
    width: 100%;
    background: var(--color-surface);
    border: none;
    padding: var(--space-5) var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    min-height: var(--touch-target);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.accordion-header:hover {
    background: linear-gradient(135deg, var(--color-surface), rgba(255, 46, 99, 0.05));
}

.accordion-header[aria-expanded="true"] {
    background: linear-gradient(135deg, var(--color-surface), rgba(255, 46, 99, 0.1));
}

.accordion-header .step-number {
    background: var(--color-primary);
    color: var(--color-text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.accordion-header .step-title {
    flex: 1;
    margin: 0;
    color: var(--color-text);
    font-size: var(--text-xl);
    font-weight: 600;
}

.accordion-icon {
    color: var(--color-primary);
    font-size: var(--text-lg);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.accordion-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    background: var(--color-surface);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.accordion-content.expanded {
    display: block !important;
    max-height: 2000px;
    padding: var(--space-6);
    animation: accordionSlide 0.3s ease;
}

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

/* Mobile optimizations */
@media (max-width: 768px) {
    .accordion-header {
        padding: var(--space-4) var(--space-5);
        gap: var(--space-3);
    }
    
    .accordion-header .step-number {
        width: 36px;
        height: 36px;
        font-size: var(--text-base);
    }
    
    .accordion-header .step-title {
        font-size: var(--text-lg);
    }
    
    .accordion-content.expanded {
        padding: var(--space-4);
    }
}

/* Focus and active states */
.accordion-header:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    background: linear-gradient(135deg, var(--color-surface), rgba(255, 46, 99, 0.1));
}

.accordion-header:active {
    transform: translateY(1px);
}