:root {
  --primary-color: #1e3a5f;
  --accent-color: #e74c3c;
  --accent-gradient: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
  --text-light: #f8fafc;
  --text-dark: #1e293b;
  --text-muted: rgba(255, 255, 255, 0.7);
  --background-dark: #0f172a;
  --background-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --card-bg: rgba(255, 255, 255, 0.05);
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 40px rgba(231, 76, 60, 0.15);
  --border-radius: 1rem;
  --border-radius-lg: 1.5rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--background-gradient);
  color: var(--text-light);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* Modern Hero Section */
.hero {
  position: relative;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #1e3c72 100%);
  padding: 8rem 2rem 10rem;
  margin-bottom: -4rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-gradient);
  color: white;
  padding: 0.5rem 1.25rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-glow);
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-light);
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border-radius: 2rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(231, 76, 60, 0.4);
}

.btn .material-icons {
  font-size: 1.25rem;
}

/* Main Container */
.main-container {
  max-width: 1100px;
  width: 90%;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
  z-index: 2;
}

/* Feature Cards */
.features-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.feature-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  text-align: center;
  backdrop-filter: blur(20px);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-light);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}

/* Tree Container */
.tree-container {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 3rem 2rem;
  margin: 2rem 0;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.tree-container pre {
  font-family: "Fira Code", "Consolas", monospace;
  line-height: 1.2;
  color: #2ecc71;
  text-shadow: 0 0 10px rgba(46, 204, 113, 0.5);
  font-size: clamp(0.7rem, 2vw, 1.1rem);
  margin: 0;
  white-space: pre;
  display: inline-block;
  text-align: center;
}

.tree {
  font-size: 2.5rem;
  color: #f1c40f;
  text-shadow: 0 0 20px rgba(241, 196, 15, 0.8);
  animation: starTwinkle 2s ease-in-out infinite;
  display: block;
  margin-bottom: 0;
}

@keyframes starTwinkle {
  0%, 100% {
    opacity: 1;
    text-shadow: 0 0 20px rgba(241, 196, 15, 0.8);
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    text-shadow: 0 0 40px rgba(241, 196, 15, 1);
    transform: scale(1.1);
  }
}

/* Instructions Section */
.instructions {
  text-align: center;
  margin: 2rem 0;
  padding: 2rem;
}

.instructions h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-light);
}

.instructions code {
  background: rgba(231, 76, 60, 0.2);
  color: var(--accent-color);
  padding: 0.25rem 0.75rem;
  border-radius: 0.5rem;
  font-family: "Fira Code", monospace;
  font-size: 0.9rem;
}

/* About Section */
.about {
  margin: 2rem 0;
}

.about h2 {
  color: var(--accent-color);
  margin-bottom: 1.25rem;
  font-size: 1.75rem;
  font-weight: 600;
}

.about p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.about p:last-child {
  margin-bottom: 0;
}

/* Releases Section */
.releases-container {
  margin: 2rem 0;
}

.releases-container h2 {
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
  font-weight: 600;
}

.card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.05);
}

.card-content {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-light);
  display: block;
  margin-bottom: 0.75rem;
}

.card-title a {
  color: var(--text-light);
  text-decoration: none;
  transition: var(--transition);
}

.card-title a:hover {
  color: var(--accent-color);
}

.release-date {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.release-body {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.release-body a {
  color: var(--accent-color);
  text-decoration: none;
}

.release-body a:hover {
  text-decoration: underline;
}

/* Swiper Customization */
.swiper {
  padding-bottom: 3rem;
}

.swiper-pagination-bullet {
  background: var(--text-muted);
  opacity: 0.5;
  transition: var(--transition);
}

.swiper-pagination-bullet-active {
  background: var(--accent-color);
  opacity: 1;
  transform: scale(1.2);
}

/* Snowfall Enhancement */
.snowfall {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 100;
  overflow: hidden;
}

.snowflake {
  position: absolute;
  top: -20px;
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  filter: blur(1px);
  opacity: 0.7;
  animation: snowfall linear infinite;
}

@keyframes snowfall {
  0% {
    transform: translateY(-20px) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.7;
  }
  90% {
    opacity: 0.7;
  }
  100% {
    transform: translateY(100vh) rotate(360deg);
    opacity: 0;
  }
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

footer .highlight {
  color: #2ecc71;
  font-weight: 600;
}

footer strong {
  color: var(--text-light);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero {
    padding: 5rem 1rem 8rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .main-container {
    width: 95%;
    padding: 1rem;
  }

  .glass-card {
    padding: 1.5rem;
  }

  .features-section {
    grid-template-columns: 1fr;
  }

  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.9rem;
  }
}

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

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Holiday Spirit Generator Styles */
.spirit-generator {
  margin: 3rem 0;
}

.spirit-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin: 2rem 0;
}

.spirit-output {
  margin: 2rem 0;
  display: none;
  animation: fadeIn 0.5s ease-in;
}

.spirit-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.spirit-card h4 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-light);
}

.spirit-card p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.joke-card {
  border-left: 4px solid #f39c12;
}

.trivia-card {
  border-left: 4px solid #3498db;
}

.activity-card {
  border-left: 4px solid #9b59b6;
}

/* Countdown Section */
.countdown-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
}

.countdown-section h3 {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 2rem;
  color: var(--text-light);
}

.countdown-display {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem;
  max-width: 600px;
  margin: 0 auto;
}

.countdown-item {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 1.5rem 1rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.countdown-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.countdown-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.countdown-label {
  display: block;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

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

@media (max-width: 768px) {
  .spirit-buttons {
    flex-direction: column;
  }
  
  .countdown-display {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .countdown-number {
    font-size: 2rem;
  }
}