/* CSS Variables for consistent theming */
:root {
  /* Colors */
  --primary-color: #ff6b9d;
  --primary-color-dark: #e85a87;
  --secondary-color: #a8e6cf;
  --accent-color: #ffd93d;
  --text-color: #333333;
  --text-color-light: #666666;
  --text-color-white: #ffffff;
  --background-color: #ffffff;
  --background-color-light: #f8f9fa;
  --border-color: #e9ecef;
  --shadow-light: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-strong: 0 8px 16px rgba(0, 0, 0, 0.2);

  /* Typography */
  --font-family-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--spacing-md) 0;
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
  margin: 0 0 var(--spacing-md) 0;
}

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

a:hover, a:focus {
  color: var(--primary-color-dark);
  text-decoration: underline;
}

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

/* Button Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  min-height: 44px; /* Accessibility: minimum touch target size */
}

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

.btn--primary:hover, .btn--primary:focus {
  background-color: var(--primary-color-dark);
  border-color: var(--primary-color-dark);
  color: var(--text-color-white);
  text-decoration: none;
}

.btn--secondary {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn--secondary:hover, .btn--secondary:focus {
  background-color: var(--primary-color);
  color: var(--text-color-white);
  text-decoration: none;
}

/* Container utility */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.header {
  background-color: var(--background-color);
  box-shadow: var(--shadow-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.nav__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-color);
  margin: 0;
}

.nav__menu {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-lg);
}

.nav__link {
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) 0;
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
}

.nav__toggle-icon {
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--text-color);
  transition: var(--transition);
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--text-color);
  transition: var(--transition);
}

.nav__toggle-icon::before {
  top: -8px;
}

.nav__toggle-icon::after {
  bottom: -8px;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--background-color-light) 0%, var(--secondary-color) 100%);
  padding: var(--spacing-2xl) 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 64px); /* Full viewport height minus header */
}

.hero__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

.hero__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--text-color-light);
  margin-bottom: var(--spacing-xl);
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.hero__media {
  display: flex;
  justify-content: center;
}

.game-iframe {
  width: 100%;
  height: 300px;
  max-width: 800px;
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
  background-color: var(--background-color);
}

.hero__game-preview {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

/* How to Play Section */
.how-to-play {
  padding: var(--spacing-3xl) 0;
  background-color: var(--background-color);
}

.how-to-play__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.how-to-play__title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.how-to-play__instructions {
  font-size: var(--font-size-lg);
  color: var(--text-color-light);
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Comments Section */
.comments {
  padding: var(--spacing-3xl) 0;
  background-color: var(--background-color-light);
}

.comments__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.comments__title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.comment-form {
  background-color: var(--background-color);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  margin-bottom: var(--spacing-2xl);
}

.comment-form__title {
  margin-bottom: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--primary-color);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-help {
  display: block;
  color: var(--text-color-light);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.comments-list {
  margin-top: var(--spacing-2xl);
}

.comments-list__title {
  margin-bottom: var(--spacing-lg);
}

.comment {
  background-color: var(--background-color);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  margin-bottom: var(--spacing-lg);
}

.comment__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.comment__author {
  font-weight: var(--font-weight-semibold);
  color: var(--primary-color);
  margin: 0;
}

.comment__date {
  color: var(--text-color-light);
  font-size: var(--font-size-sm);
}

.comment__text {
  margin: 0;
  line-height: 1.6;
}

.image-preview {
  margin-top: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-height: 40px;
}

.image-preview img {
  max-width: 120px;
  max-height: 120px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  object-fit: cover;
  border: 1.5px solid var(--border-color);
}

.comment__image {
  display: block;
  margin: var(--spacing-md) 0 0 0;
  max-width: 180px;
  max-height: 180px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  object-fit: cover;
  border: 1.5px solid var(--border-color);
}

/* Footer */
.footer {
  background-color: var(--text-color);
  color: var(--text-color-white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg) 0;
}

.footer__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.footer__content {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__title {
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.footer__subtitle {
  margin-bottom: var(--spacing-md);
}

.footer__description {
  color: #cccccc;
  margin: 0;
}

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

.footer__links li {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: #cccccc;
  text-decoration: none;
  transition: var(--transition);
}

.footer__link:hover,
.footer__link:focus {
  color: var(--primary-color);
  text-decoration: none;
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid #555555;
}

.footer__copyright {
  color: #cccccc;
  font-size: var(--font-size-sm);
  margin: 0;
}

/* Responsive Design - Tablet */
@media (min-width: 768px) {
  /* Navigation */
  .nav__menu {
    display: flex;
  }
  
  .nav__toggle {
    display: none;
  }

  /* Hero */
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }

  /* Game iframe */
  .game-iframe {
    height: 400px;
  }

  /* How to Play */
  
  /* Comments */
  .comment__header {
    flex-direction: row;
  }

  .image-preview img {
    max-width: 180px;
    max-height: 180px;
  }
  .comment__image {
    max-width: 240px;
    max-height: 240px;
  }

  /* Footer */
  .footer__content {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Responsive Design - Desktop */
@media (min-width: 1024px) {
  /* Typography */
  .hero__title {
    font-size: var(--font-size-4xl);
  }

  /* Hero */
  .hero {
    padding: var(--spacing-3xl) 0;
  }

  /* Game iframe */
  .game-iframe {
    height: 600px;
    max-width: 960px;
  }

  .hero__game-preview {
    max-width: 960px;
  }

  /* How to Play */
  
  /* Comments */
  .comment__header {
    flex-direction: row;
  }

  /* Footer */
  .footer__content {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Animation and Interactions */
@media (prefers-reduced-motion: no-preference) {
  .comment {
    transition: transform 0.3s ease;
  }
  
  .comment:hover {
    transform: translateY(-2px);
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --shadow-light: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-strong: 0 8px 16px rgba(0, 0, 0, 0.5);
  }
}

/* Print styles */
@media print {
  .header,
  .footer,
  .comment-form {
    display: none;
  }
  
  .hero,
  .how-to-play,
  .comments {
    padding: var(--spacing-lg) 0;
  }
  
  * {
    box-shadow: none !important;
  }
}