/* Design Tokens & Custom Properties */
:root {
  --font-family-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-display: 'Outfit', system-ui, -apple-system, sans-serif;

  /* Colors */
  --bg-color: #0d0f14;
  --bg-card: rgba(20, 23, 34, 0.6);
  --bg-card-hover: rgba(28, 32, 48, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-indigo: #6366f1;
  --accent-purple: #a855f7;
  --accent-gradient: linear-gradient(135deg, var(--accent-indigo) 0%, var(--accent-purple) 100%);
  --accent-success: #10b981;
  --accent-success-bg: rgba(16, 185, 129, 0.1);
  --accent-warning: #f59e0b;
  --accent-warning-bg: rgba(245, 158, 11, 0.1);

  /* Structure */
  --header-height: 64px;
  --max-width: 1200px;
}

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

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-family-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Typography Custom Styling */
h1, h2, h3, h4 {
  font-family: var(--font-family-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

p {
  line-height: 1.6;
  color: var(--text-secondary);
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

/* Header & Glassmorphism Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 1000;
  background: rgba(13, 15, 20, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-family-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Hamburger Menu Button */
.menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* Mobile Drawer Styling */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background: rgba(13, 15, 20, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--border-color);
  padding: 6rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  z-index: 999;
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav.open {
  right: 0;
}

.mobile-nav a {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.mobile-nav a:hover {
  color: var(--text-primary);
  padding-left: 0.5rem;
}

.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.menu-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* Main Layout */
.main-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--header-height) + 4rem) 2rem 6rem;
}

/* Hero Section */
.hero {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 5rem;
}

.hero-subtitle {
  font-family: var(--font-family-display);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: 2.5rem;
}

/* Professional Product Overview Write-up Box */
.overview-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 3rem;
  text-align: left;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  margin-bottom: 6rem;
  position: relative;
  overflow: hidden;
}

.overview-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-gradient);
}

.overview-title {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.overview-title span {
  display: inline-block;
  width: 8px;
  height: 24px;
  background: var(--accent-gradient);
  border-radius: 4px;
}

.overview-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.overview-p {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.overview-column {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.overview-column p + p {
  margin-top: 1.25rem;
}

.overview-column .p-ps {
  margin-top: auto;
  padding-top: 3rem;
  font-style: italic;
}

.overview-link {
  color: var(--accent-purple);
  text-decoration: underline;
  font-weight: 500;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: opacity 0.2s ease;
}

.overview-link:hover {
  opacity: 0.8;
}

/* Product Section */
.products-section {
  width: 100%;
}

.section-header {
  margin-bottom: 3rem;
  text-align: center;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--text-secondary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  width: 100%;
}

/* Product Card */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 380px;
  position: relative;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.05), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.product-card:hover {
  transform: translateY(-8px);
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(99, 102, 241, 0.1);
}

.product-card:hover::before {
  opacity: 1;
}

.product-card-top {
  margin-bottom: 2rem;
}

.product-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.product-badge.available {
  background: var(--accent-success-bg);
  color: var(--accent-success);
}

.product-badge.unavailable {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

.product-card-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.product-card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.product-card-action {
  margin-top: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.9rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.2);
}

.btn-primary:hover {
  transform: scale(1.02);
  box-shadow: 0 6px 24px rgba(168, 85, 247, 0.3);
}

.btn-disabled {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.05);
  cursor: not-allowed;
}

/* Footer Section */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem;
  text-align: center;
  background: rgba(8, 9, 12, 0.5);
}

.footer-text {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Hamburger animations */
.menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-btn.active span:nth-child(2) {
  opacity: 0;
}
.menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .overview-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .menu-btn {
    display: block;
  }

  .overview-box {
    padding: 2rem;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }
}

/* Page 2 Details Styling */
.product-card-detailed {
  min-height: auto; /* Allow growth based on content */
  gap: 1.5rem;
}

.details-section-title {
  font-family: var(--font-family-display);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin: 1.5rem 0 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-levels-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.user-level-badge {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.6rem 0.4rem;
  font-size: 0.8rem;
  text-align: center;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.user-level-badge:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.user-level-badge strong {
  color: var(--text-primary);
  font-weight: 600;
}

.tier-card {
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 0.75rem;
  transition: all 0.3s ease;
}

.tier-card:hover {
  border-color: rgba(99, 102, 241, 0.2);
  background: rgba(255, 255, 255, 0.03);
}

.tier-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tier-title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-indigo);
}

.tier-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.tier-features-list {
  list-style: none;
  margin-top: 0.5rem;
  padding-left: 0.5rem;
}

.tier-features-list li {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  position: relative;
  padding-left: 1rem;
}

.tier-features-list li::before {
  content: "•";
  color: var(--accent-purple);
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* Dimmed / In Development Styling */
.product-card.less-highlighted {
  opacity: 0.75;
  border-style: dashed;
  border-width: 1px;
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(20, 23, 34, 0.3);
}

.product-card.less-highlighted:hover {
  opacity: 0.95;
  border-color: var(--border-hover);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transform: translateY(-4px);
}

.card-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: -0.5rem;
  margin-bottom: 1rem;
}

/* Shop Link Placement */
.shop-link-container {
  margin-top: 1rem;
  text-align: center;
}

.secondary-shop-link {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: underline;
  transition: color 0.2s ease;
}

.secondary-shop-link:hover {
  color: var(--accent-indigo);
}