/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colors - HSL format */
  --background: hsl(0, 0%, 0%);
  --foreground: hsl(0, 40%, 98%);
  --card: hsl(0, 39%, 15%);
  --card-foreground: hsl(0, 40%, 98%);
  --primary: hsl(0, 94%, 43%);
  --primary-foreground: hsl(0, 47%, 11%);
  --secondary: hsl(0, 39%, 18%);
  --secondary-foreground: hsl(0, 40%, 98%);
  --muted: hsl(0, 39%, 18%);
  --muted-foreground: hsl(0, 20%, 65%);
  --accent: hsl(0, 94%, 43%);
  --border: hsl(0, 39%, 22%);
  --input-bg: hsl(0, 39%, 22%);
  --radius: 0.75rem;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, hsl(0, 60%, 2%) 0%, hsl(0, 0%, 0%) 100%);
  --gradient-accent: linear-gradient(135deg, hsl(0, 94%, 43%) 0%, hsl(0, 94%, 53%) 100%);

  /* Effects */
  --shadow-glow: 0 0 40px hsla(0, 94%, 43%, 0.3);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  background: url('https://raw.githubusercontent.com/RPNPanda/RPNPanda.github.io/main/Background.png') no-repeat center center fixed;
  background-size: cover;
  color: var(--foreground);
  line-height: 1.6;
  min-height: 100vh;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Navbar */
.navbar {
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(34, 40, 49, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.navbar-logo:hover .logo-icon {
  box-shadow: var(--shadow-glow);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Icon box style stays the same */
.logo-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.logo-icon img {
  max-width: 100%;      /* image won't exceed 70% of the box width */
  max-height: 100%;     /* image won't exceed 70% of the box height */
  object-fit: contain;  /* maintain aspect ratio */
  display: block;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: bold;
  background: linear-gradient(to right, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-links {
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--muted-foreground);
  font-weight: 500;
  transition: var(--transition-smooth);
}

.nav-link:hover {
  color: var(--foreground);
  background: var(--secondary);
}

.nav-link.active {
  background: var(--primary);
  color: var(--primary-foreground);
  box-shadow: var(--shadow-glow);
}

.nav-icon {
  width: 1rem;
  height: 1rem;
}

/* Main Content */
main {
  padding-top: 8rem;
  padding-bottom: 4rem;
}

/* Hero Section */
.hero {
  text-align: center;
  margin-bottom: 5rem;
  animation: fadeIn 1s ease-in;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: bold;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, var(--foreground), var(--primary), var(--foreground));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  color: var(--muted-foreground);
  margin-bottom: 2rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-smooth);
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--primary-foreground);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--secondary-foreground);
}

.btn-secondary:hover {
  background: hsl(220, 39%, 22%);
}

.btn-outline {
  background: transparent;
  border: 1px solid hsla(189, 94%, 43%, 0.5);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--secondary);
}

.btn-icon {
  width: 1.25rem;
  height: 1.25rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 80rem;
  margin: 0 auto;
}

.card {
  background: rgba(34, 40, 49, 0.5);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition-smooth);
  animation: fadeInUp 0.7s ease-in;
}

.card:hover {
  border-color: hsla(189, 94%, 43%, 0.5);
  box-shadow: var(--shadow-glow);
}

.card-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  animation: float 6s ease-in-out infinite;
}

.card-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--primary-foreground);
}

.card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--foreground);
}

.card p {
  color: var(--muted-foreground);
}

/* Stats Section */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  max-width: 56rem;
  margin: 5rem auto 0;
  text-align: center;
}

.stat-value {
  font-size: clamp(2rem, 5vw, 2.5rem);
  font-weight: bold;
  background: linear-gradient(to right, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--muted-foreground);
}

/* Key System Specific */
.page-header {
  text-align: center;
  margin-bottom: 3rem;
  animation: fadeIn 0.7s ease-in;
}

.page-icon {
  width: 5rem;
  height: 5rem;
  background: var(--gradient-accent);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  animation: float 6s ease-in-out infinite;
  box-shadow: var(--shadow-glow);
}

.page-icon svg {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--primary-foreground);
}

.page-title {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: bold;
  margin-bottom: 1rem;
  background: linear-gradient(to right, var(--foreground), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-description {
  font-size: 1.125rem;
  color: var(--muted-foreground);
}

/* Content Wrapper */
.content-wrapper {
  max-width: 42rem;
  margin: 0 auto;
}

/* Steps */
.steps {
  margin-bottom: 1.5rem;
}

.step {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.step-number {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--primary);
  color: var(--primary-foreground);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  flex-shrink: 0;
}

.step-content h3 {
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 0.25rem;
}

.step-content p {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

/* Alert */
.alert {
  background: rgba(34, 40, 49, 0.5);
  border: 1px solid hsla(189, 94%, 43%, 0.3);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1.5rem;
  display: flex;
  gap: 0.75rem;
  animation: fadeInUp 0.7s ease-in 0.1s backwards;
}

.alert-icon {
  width: 1rem;
  height: 1rem;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.alert-content {
  flex: 1;
  color: var(--foreground);
}

.alert code {
  background: var(--card);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  color: var(--primary);
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
}

.copy-btn {
  background: transparent;
  border: none;
  color: var(--primary);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  margin-left: 0.5rem;
  border-radius: 0.25rem;
  transition: var(--transition-smooth);
}

.copy-btn:hover {
  background: var(--secondary);
}

/* Form */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--foreground);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--foreground);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition-smooth);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px hsla(189, 94%, 43%, 0.2);
}

.form-input::placeholder {
  color: var(--muted-foreground);
}

/* Badge */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.5rem;
}

.badge-primary {
  background: var(--primary);
  color: var(--primary-foreground);
}

.badge-outline {
  background: transparent;
  border: 1px solid hsla(189, 94%, 43%, 0.5);
  color: var(--primary);
}

.badge-muted {
  background: transparent;
  border: 1px solid hsla(215, 20%, 65%, 0.5);
  color: var(--muted-foreground);
}

/* Download Cards */
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.download-card {
  animation: fadeInUp 0.7s ease-in;
}

.download-card:nth-child(2) {
  animation-delay: 0.1s;
}

.card-header {
  margin-bottom: 1.5rem;
}

.badge-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.5rem;
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.card-description {
  color: var(--muted-foreground);
}

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

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
  margin-bottom: 0.5rem;
}

.check-icon {
  width: 1rem;
  height: 1rem;
  color: var(--primary);
  flex-shrink: 0;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.75rem;
}

.feature-item-full {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feature-item-full .check-icon {
  width: 1.25rem;
  height: 1.25rem;
}

.feature-item-full span {
  color: var(--foreground);
}

/* Help Section */
.help-section {
  text-align: center;
  margin-top: 2rem;
  animation: fadeInUp 0.7s ease-in 0.3s backwards;
}

.help-section p {
  color: var(--muted-foreground);
  margin-bottom: 1rem;
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  margin-bottom: 0.5rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  animation: slideInRight 0.3s ease-out;
  pointer-events: auto;
  min-width: 300px;
}

.toast.removing {
  animation: slideOutRight 0.3s ease-out forwards;
}

.toast-title {
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 0.25rem;
}

.toast-description {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .navbar-links {
    gap: 0;
  }
  
  .nav-link {
    padding: 0.5rem;
    font-size: 0.875rem;
  }
  
  .nav-link span {
    display: none;
  }
  
  .logo-text {
    display: none;
  }
  
  .toast-container {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }
  
  .toast {
    min-width: auto;
  }
}

/* Utility Classes */
.w-full {
  width: 100%;
}

.hidden {
  display: none;
}