/* CardStrata Marketing Landing Site Design System */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Color Palette - Dark Obsidian & Slate */
  --bg-primary: hsl(222, 30%, 7%);
  --bg-secondary: hsl(222, 25%, 11%);
  --bg-tertiary: hsl(222, 22%, 15%);
  --bg-card: hsl(222, 24%, 13%);
  --bg-card-hover: hsl(222, 24%, 17%);
  --bg-glass: rgba(18, 24, 38, 0.85);

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-active: rgba(255, 255, 255, 0.25);

  /* Typography Colors */
  --text-primary: hsl(0, 0%, 98%);
  --text-secondary: hsl(220, 15%, 72%);
  --text-muted: hsl(220, 12%, 50%);
  --text-inverse: hsl(222, 30%, 7%);

  /* Accent Colors */
  --accent-emerald: hsl(160, 75%, 46%);
  --accent-emerald-glow: rgba(24, 210, 137, 0.15);
  --accent-cyan: hsl(190, 85%, 48%);
  --accent-amber: hsl(38, 92%, 50%);
  --accent-blue: hsl(212, 90%, 55%);

  /* Typography System */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Spacing & Layout */
  --max-width: 1200px;
  --header-height: 72px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: background-color var(--transition-normal);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Primary Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.375rem;
  background: var(--text-primary);
  color: var(--text-inverse);
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: var(--radius-pill);
  transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: hsl(0, 0%, 90%);
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.15);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.375rem;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-active);
  transform: translateY(-1px);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-fast);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-medium);
  padding: 1.5rem;
  z-index: 999;
}

.mobile-nav-drawer.active {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-nav-list .nav-link {
  font-size: 1.125rem;
}

/* Hero Section */
.hero-section {
  padding-top: calc(var(--header-height) + 4rem);
  padding-bottom: 5rem;
  text-align: center;
  position: relative;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-emerald);
  margin-bottom: 1.5rem;
}

.hero-headline {
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 850px;
  margin: 0 auto 1.5rem auto;
  color: var(--text-primary);
}

.hero-subheadline {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 2.5rem auto;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

/* Showcase App Preview Card */
.hero-mockup-wrapper {
  margin: 0 auto;
  max-width: 1000px;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
}

.mockup-header {
  height: 42px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.5rem;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot.red { background-color: #ff5f56; }
.dot.yellow { background-color: #ffbd2e; }
.dot.green { background-color: #27c93f; }

.mockup-title {
  margin-left: auto;
  margin-right: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.mockup-body {
  padding: 2rem;
  background: radial-gradient(circle at 50% 0%, var(--bg-tertiary), var(--bg-card));
  min-height: 380px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Interactive Demo Showcase Widgets */
.demo-binder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.demo-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: left;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.demo-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-emerald);
}

.demo-card-image {
  aspect-ratio: 0.7;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0.75rem;
  position: relative;
  overflow: hidden;
}

.card-img-art {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius-sm) - 2px);
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
  transition: transform var(--transition-normal);
}

.demo-card:hover .card-img-art {
  transform: scale(1.04);
}

.card-badge {
  align-self: flex-end;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(4px);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 1;
}

.card-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.card-price {
  font-weight: 700;
  color: var(--accent-emerald);
}

/* TCG Supported Games Banner */
.games-banner-section {
  padding: 3rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-secondary);
}

.section-label {
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.games-flex {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.game-chip {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem 1.25rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.game-chip-icon {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.icon-pokemon { background-color: #ffcb05; }
.icon-lorcana { background-color: #00d2ff; }
.icon-mtg { background-color: #f77014; }
.icon-onepiece { background-color: #e60012; }
.icon-gundam { background-color: #0066cc; }
.icon-riftbound { background-color: #a855f7; }

/* Features Section */
.features-section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 4rem auto;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.0625rem;
  color: var(--text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), background-color var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-active);
  background-color: var(--bg-card-hover);
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--accent-emerald);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.feature-body {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Interactive Tabs Section (How It Works) */
.how-it-works-section {
  padding: 6rem 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.tabs-nav {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
}

.tab-btn.active {
  background: var(--text-primary);
  color: var(--text-inverse);
  border-color: var(--text-primary);
}

.tab-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.tab-panel.active {
  display: grid;
}

@media (max-width: 768px) {
  .tab-panel.active {
    grid-template-columns: 1fr;
  }
}

.tab-content-text h3 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.tab-content-text p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.tab-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tab-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: 500;
}

.check-icon {
  color: var(--accent-emerald);
  font-weight: 800;
}

.tab-visual-preview {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}

/* Beta Access Invitation Banner */
.beta-banner-section {
  padding: 6rem 0;
}

.beta-card {
  background: linear-gradient(135deg, hsl(222, 26%, 14%), hsl(222, 30%, 10%));
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.beta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.beta-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem auto;
}

/* Legal Documents & Content Pages */
.doc-page {
  padding-top: calc(var(--header-height) + 3rem);
  padding-bottom: 6rem;
}

.doc-header {
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border-medium);
  padding-bottom: 2rem;
}

.doc-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.doc-date {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.doc-content {
  max-width: 800px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.doc-content h2 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.doc-content h3 {
  font-size: 1.1875rem;
  color: var(--text-primary);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.doc-content p {
  margin-bottom: 1.25rem;
}

.doc-content ul {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.doc-content li {
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 1rem;
  max-width: 300px;
}

.footer-col-title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* Mobile Media Queries */
@media (max-width: 768px) {
  .nav-links, .nav-actions {
    display: none;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .hero-headline {
    font-size: 2.25rem;
  }
}