/* ==========================================================================
   Rule34dle Responsive UI/UX Styles
   Mobile-first responsive design with modern CSS techniques
   ========================================================================== */

/* CSS Custom Properties (Variables) */
:root {
  /* Colors */
  --color-primary: #6366f1;
  --color-primary-hover: #5b57f4;
  --color-primary-dark: #4f46e5;
  --color-secondary: #ec4899;
  --color-secondary-hover: #db2777;
  --color-accent: #06b6d4;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-black: #000000;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
  
  /* Font Sizes - Mobile First */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  
  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Spacing - Mobile First */
  --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 */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */
  
  /* Border Radius */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.375rem;
  --border-radius-lg: 0.5rem;
  --border-radius-xl: 0.75rem;
  --border-radius-2xl: 1rem;
  --border-radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Container Sizes */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  
  /* Breakpoints for reference */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* Z-index scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
  
  /* Animation */
  --transition-fast: 150ms ease-out;
  --transition-normal: 300ms ease-out;
  --transition-slow: 500ms ease-out;
}

/* ==========================================================================
   Reset and Base Styles
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Remove default margins and paddings */
h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd {
  margin: 0;
  padding: 0;
}

/* List styles */
ul, ol {
  list-style: none;
}

/* Link styles */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

/* Button reset */
button {
  border: none;
  background: none;
  font: inherit;
  cursor: pointer;
  padding: 0;
  margin: 0;
}

/* Image styles */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

:focus:not(:focus-visible) {
  outline: none;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--border-radius-md);
  text-decoration: none;
  z-index: var(--z-tooltip);
  font-weight: var(--font-weight-medium);
  transform: translateY(-100%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
  top: var(--space-2);
}

/* ==========================================================================
   Typography System
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

h5, h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-700);
}

/* Responsive typography adjustments */
@media (min-width: 640px) {
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
  
  h3 {
    font-size: var(--font-size-2xl);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: var(--font-size-5xl);
  }
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

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

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

@media (min-width: 1536px) {
  .container {
    max-width: var(--container-2xl);
  }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: var(--z-sticky);
  transition: all var(--transition-normal);
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  max-width: var(--container-2xl);
  margin: 0 auto;
}

@media (min-width: 640px) {
  .nav__container {
    padding: var(--space-4) var(--space-6);
  }
}

@media (min-width: 1024px) {
  .nav__container {
    padding: var(--space-4) var(--space-8);
  }
}

.nav__logo {
  display: flex;
  align-items: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.nav__logo:hover {
  color: var(--color-primary-hover);
}

.nav__logo-text {
  font-family: var(--font-mono);
  letter-spacing: -0.025em;
}

/* Mobile Navigation Toggle */
.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 32px;
  height: 32px;
  position: relative;
  z-index: var(--z-modal);
}

.nav__toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-gray-700);
  border-radius: var(--border-radius-full);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.nav__toggle-line:not(:last-child) {
  margin-bottom: 4px;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:first-child {
  transform: rotate(45deg) translate(3px, 3px);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(2) {
  opacity: 0;
  transform: scale(0);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:last-child {
  transform: rotate(-45deg) translate(3px, -3px);
}

/* Navigation Menu */
.nav__menu {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  height: 100vh;
  background: var(--color-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: var(--z-modal-backdrop);
  padding: var(--space-8);
}

.nav__menu.nav__menu--open {
  transform: translateX(0);
}

.nav__item {
  opacity: 0;
  animation: fadeInUp 0.5s ease-out forwards;
}

.nav__menu--open .nav__item:nth-child(1) {
  animation-delay: 0.1s;
}

.nav__menu--open .nav__item:nth-child(2) {
  animation-delay: 0.2s;
}

.nav__menu--open .nav__item:nth-child(3) {
  animation-delay: 0.3s;
}

.nav__menu--open .nav__item:nth-child(4) {
  animation-delay: 0.4s;
}

.nav__menu--open .nav__item:nth-child(5) {
  animation-delay: 0.5s;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav__link {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: color var(--transition-fast);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius-lg);
  position: relative;
}

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

.nav__link--active {
  color: var(--color-primary);
  background-color: var(--color-gray-50);
}

/* Desktop Navigation */
@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }
  
  .nav__menu {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    flex-direction: row;
    justify-content: flex-end;
    transform: none;
    gap: var(--space-2);
    padding: 0;
  }
  
  .nav__item {
    opacity: 1;
    animation: none;
  }
  
  .nav__link {
    font-size: var(--font-size-base);
    padding: var(--space-2) var(--space-4);
  }
}

/* ==========================================================================
   Button System
   ========================================================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
  min-height: 44px; /* Touch target size */
  gap: var(--space-2);
}

.button--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.button--primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.button--primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.button--secondary {
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
}

.button--secondary:hover {
  background-color: var(--color-gray-200);
  color: var(--color-gray-900);
}

.button--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.button--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.button--large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

.button--small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ==========================================================================
   Age Gate Overlay
   ========================================================================== */

.age-gate {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.age-gate.age-gate--show {
  opacity: 1;
  visibility: visible;
}

.age-gate__content {
  background: var(--color-white);
  border-radius: var(--border-radius-2xl);
  padding: var(--space-8);
  max-width: 500px;
  width: 100%;
  text-align: center;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.age-gate--show .age-gate__content {
  transform: scale(1);
}

.age-gate__title {
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-2xl);
}

.age-gate__description {
  color: var(--color-gray-600);
  margin-bottom: var(--space-8);
  line-height: var(--line-height-relaxed);
}

.age-gate__buttons {
  display: flex;
  gap: var(--space-4);
  flex-direction: column;
}

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

.age-gate__button {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--border-radius-lg);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
  flex: 1;
}

.age-gate__button--confirm {
  background-color: var(--color-success);
  color: var(--color-white);
}

.age-gate__button--confirm:hover {
  background-color: #059669;
  transform: translateY(-1px);
}

.age-gate__button--deny {
  background-color: var(--color-gray-200);
  color: var(--color-gray-700);
}

.age-gate__button--deny:hover {
  background-color: var(--color-gray-300);
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */

.main {
  min-height: calc(100vh - 140px); /* Account for header and footer */
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  padding: var(--space-12) 0 var(--space-16);
  background: linear-gradient(
    135deg,
    var(--color-gray-50) 0%,
    var(--color-white) 50%,
    var(--color-gray-50) 100%
  );
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, var(--color-primary) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, var(--color-secondary) 0%, transparent 50%);
  opacity: 0.03;
  pointer-events: none;
}

.hero__container {
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 640px) {
  .hero__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    padding: 0 var(--space-8);
  }
}

.hero__content {
  text-align: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 1024px) {
  .hero__content {
    text-align: left;
  }
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-tight);
}

@media (min-width: 640px) {
  .hero__title {
    font-size: var(--font-size-5xl);
  }
}

@media (min-width: 1024px) {
  .hero__title {
    font-size: 3.5rem;
  }
}

.hero__subtitle {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  margin-top: var(--space-2);
}

@media (min-width: 640px) {
  .hero__subtitle {
    font-size: var(--font-size-2xl);
  }
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: var(--space-8);
  line-height: var(--line-height-relaxed);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 1024px) {
  .hero__description {
    margin-left: 0;
    margin-right: 0;
  }
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

@media (min-width: 640px) {
  .hero__stats {
    gap: var(--space-8);
  }
}

.stat {
  text-align: center;
  padding: var(--space-4);
  background: var(--color-white);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-100);
}

.stat__number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-family: var(--font-mono);
}

@media (min-width: 640px) {
  .stat__number {
    font-size: var(--font-size-3xl);
  }
}

.stat__label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin-top: var(--space-2);
  font-weight: var(--font-weight-medium);
}

/* ==========================================================================
   Game Container & Iframe Integration
   ========================================================================== */

.game-container {
  position: relative;
  z-index: 1;
}

.game-wrapper {
  position: relative;
  background: var(--color-white);
  border-radius: var(--border-radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  aspect-ratio: 16 / 9;
  min-height: 400px;
}

@media (min-width: 640px) {
  .game-wrapper {
    min-height: 500px;
  }
}

@media (min-width: 1024px) {
  .game-wrapper {
    min-height: 600px;
  }
}

.game__iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--border-radius-2xl);
  background: var(--color-gray-50);
}

/* Game Loading State */
.game__loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-50);
  color: var(--color-gray-600);
  gap: var(--space-4);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray-300);
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Game Error State */
.game__error {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-50);
  text-align: center;
  padding: var(--space-8);
  gap: var(--space-4);
}

.error-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.game__error h3 {
  color: var(--color-error);
  margin-bottom: var(--space-2);
}

.game__error p {
  color: var(--color-gray-600);
  margin-bottom: var(--space-6);
}

/* Game Controls */
.game-controls {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  margin-top: var(--space-8);
  flex-direction: column;
}

@media (min-width: 640px) {
  .game-controls {
    flex-direction: row;
  }
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features {
  padding: var(--space-16) 0;
  background: var(--color-white);
}

.features__container {
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .features__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .features__container {
    padding: 0 var(--space-8);
  }
}

.features__title {
  text-align: center;
  margin-bottom: var(--space-12);
  color: var(--color-gray-900);
}

.features__grid {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
}

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

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

.feature {
  text-align: center;
  padding: var(--space-6);
  border-radius: var(--border-radius-xl);
  background: var(--color-gray-50);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: var(--color-white);
}

.feature__icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
  display: block;
}

.feature__title {
  margin-bottom: var(--space-3);
  color: var(--color-gray-900);
  font-size: var(--font-size-lg);
}

.feature__description {
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

/* ==========================================================================
   How to Play Section
   ========================================================================== */

.how-to-play {
  padding: var(--space-16) 0;
  background: var(--color-gray-50);
}

.how-to-play__container {
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 640px) {
  .how-to-play__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .how-to-play__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    padding: 0 var(--space-8);
  }
}

.how-to-play__title {
  text-align: center;
  margin-bottom: var(--space-8);
}

@media (min-width: 1024px) {
  .how-to-play__title {
    text-align: left;
  }
}

.how-to-play__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.step {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

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

.step__content {
  flex: 1;
}

.step__title {
  margin-bottom: var(--space-2);
  color: var(--color-gray-900);
  font-size: var(--font-size-lg);
}

.step__description {
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

/* Game Preview Visual */
.game-preview {
  background: var(--color-white);
  border-radius: var(--border-radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-gray-200);
  position: relative;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
}

.game-preview__option {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  width: 100%;
}

.game-preview__tag {
  background: var(--color-gray-100);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--border-radius-lg);
  font-family: var(--font-mono);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.game-preview__tag:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.05);
}

.game-preview__vs {
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-400);
  font-size: var(--font-size-lg);
}

.game-preview__question {
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
  text-align: center;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta {
  padding: var(--space-16) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
}

.cta__container {
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .cta__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .cta__container {
    padding: 0 var(--space-8);
  }
}

.cta__title {
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.cta__description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta__buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-direction: column;
}

@media (min-width: 640px) {
  .cta__buttons {
    flex-direction: row;
  }
}

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

.cta .button--primary:hover {
  background: var(--color-gray-100);
  transform: translateY(-2px);
}

.cta .button--outline {
  border-color: var(--color-white);
  color: var(--color-white);
}

.cta .button--outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__container {
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .footer__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .footer__container {
    padding: 0 var(--space-8);
  }
}

.footer__content {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer__content {
    grid-template-columns: 1fr 2fr;
    gap: var(--space-12);
  }
}

.footer__brand {
  max-width: 400px;
}

.footer__title {
  color: var(--color-white);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
}

.footer__description {
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

.footer__links {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.footer__section {
  min-width: 0;
}

.footer__heading {
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
}

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

.footer__link {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
  line-height: var(--line-height-relaxed);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-gray-800);
  text-align: center;
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: 0;
}

.footer__age-notice {
  color: var(--color-warning);
  font-weight: var(--font-weight-medium);
}

.footer__social {
  display: flex;
  gap: var(--space-4);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-gray-800);
  border-radius: 50%;
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ==========================================================================
   Responsive Images and Media
   ========================================================================== */

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

/* ==========================================================================
   Animations and Transitions
   ========================================================================== */

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

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .nav__toggle,
  .age-gate,
  .game-container,
  .cta,
  .footer__social {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
  }
  
  p {
    orphans: 3;
    widows: 3;
  }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.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;
}

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

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

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

.hidden {
  display: none;
}

.visible {
  visibility: visible;
}

.invisible {
  visibility: hidden;
}

/* ==========================================================================
   High Contrast Mode Support
   ========================================================================== */

@media (prefers-contrast: high) {
  .button--primary {
    border: 2px solid var(--color-gray-900);
  }
  
  .nav__link:focus,
  .button:focus {
    outline: 3px solid;
    outline-offset: 2px;
  }
}