/* ==========================================================================
   UV Atlas Batch Studio - Premium Minimalist Dark Theme ("Simple but Tasty")
   ========================================================================== */

:root {
  --bg-main: #07090E;
  --bg-surface: #0E131B;
  --bg-card: #141A24;
  --bg-card-hover: #19212E;
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-active: rgba(56, 189, 248, 0.4);
  
  --text-main: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --accent-blue: #38BDF8;
  --accent-blue-glow: rgba(56, 189, 248, 0.15);
  --accent-indigo: #6366F1;
  --accent-emerald: #10B981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.15);
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* Subtle Ambient Glow */
.ambient-glow {
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, rgba(99, 102, 241, 0.06) 50%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 14, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
}

.logo-badge {
  background: linear-gradient(135deg, #0284C7, #6366F1);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.logo-text {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-cta {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-main) !important;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  font-weight: 600 !important;
  font-size: 13px !important;
  transition: all var(--transition-fast) !important;
}

.nav-cta:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-blue);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-pill-dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-blue);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-blue);
}

.hero-title {
  font-size: clamp(34px, 5.5vw, 62px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  color: #FFFFFF;
  max-width: 900px;
  margin: 0 auto 20px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #38BDF8 0%, #818CF8 50%, #C084FC 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, #0284C7 0%, #2563EB 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369A1 0%, #1D4ED8 100%);
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 36px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.stat-icon {
  color: var(--accent-emerald);
}

/* ==========================================================================
   Interactive Showcase Section
   ========================================================================== */
.showcase-section {
  padding: 40px 0 80px;
}

.showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 16px;
}

.showcase-selector {
  display: flex;
  align-items: center;
  gap: 10px;
}

.asset-tab-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.asset-tab-btn.active {
  background: rgba(56, 189, 248, 0.12);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.showcase-nav {
  display: flex;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  overflow-x: auto;
}

.showcase-tab {
  padding: 14px 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.showcase-tab:hover {
  color: var(--text-main);
}

.showcase-tab.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
  background: rgba(56, 189, 248, 0.04);
}

.showcase-viewport {
  position: relative;
  min-height: 480px;
  max-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #06080C;
  overflow: hidden;
}

.showcase-media {
  max-width: 100%;
  max-height: 560px;
  object-fit: contain;
  display: block;
}

.viewer-3d-box {
  width: 100%;
  height: 540px;
  position: relative;
}

model-viewer {
  width: 100%;
  height: 100%;
  --poster-color: #06080C;
}

.showcase-caption {
  padding: 16px 24px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}

.caption-meta {
  display: flex;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.caption-meta span {
  color: var(--accent-emerald);
}

/* ==========================================================================
   Feature Grid
   ========================================================================== */
.features-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.section-title {
  text-align: center;
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  letter-spacing: -0.8px;
  margin-bottom: 14px;
}

.section-desc {
  text-align: center;
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto 50px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.feature-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-2px);
  background: var(--bg-card-hover);
}

.feature-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 20px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */
.pricing-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card.featured {
  border-color: var(--accent-blue);
  box-shadow: 0 10px 40px rgba(56, 189, 248, 0.12);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: linear-gradient(135deg, #0284C7, #2563EB);
  color: #FFFFFF;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-header h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.pricing-desc {
  font-size: 13px;
  color: var(--text-secondary);
  min-height: 40px;
  margin-bottom: 20px;
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.price-currency {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-secondary);
}

.price-amount {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -1px;
  color: #FFFFFF;
}

.price-period {
  font-size: 14px;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.pricing-features li svg {
  color: var(--accent-emerald);
  min-width: 16px;
  margin-top: 3px;
}

/* ==========================================================================
   Activation & Receipt Claim Section
   ========================================================================== */
.activation-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.activation-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  max-width: 680px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-input {
  width: 100%;
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: #FFFFFF;
  padding: 12px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-blue);
}

.form-help {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 5px;
}

/* Key Display Result */
.key-result-card {
  margin-top: 24px;
  background: #05080E;
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  padding: 20px;
  display: none;
}

.key-result-header {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--accent-emerald);
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.key-pill-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #090E17;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: #38BDF8;
  word-break: break-all;
}

/* ==========================================================================
   Payment Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  padding: 32px 28px;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  animation: modalSlideIn 0.25s ease;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--text-main);
}

.payment-options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.payment-option-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.payment-option-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-blue);
  transform: translateX(4px);
}

.payment-brand-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
}

.brand-stripe { background: #635BFF; color: #fff; }
.brand-lemon { background: #FFC233; color: #111; }
.brand-gumroad { background: #FF90E8; color: #111; }
.brand-direct { background: #10B981; color: #fff; }

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */
.faq-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
  padding: 20px 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding-top 0.3s ease;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-top: 12px;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-icon {
  transition: transform var(--transition-fast);
  color: var(--text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 16px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text-main);
}