/* KeyBrainer — Core Design System & Stylesheet (Clinical Light Tone Edition V2) */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

/* ==========================================================================
   1. Design Tokens & Root Variables (Light Theme)
   ========================================================================== */
:root {
  /* Color Palette - Vibrant Clinical Light Colors */
  --bg-dark: hsl(210, 25%, 98%); /* Cool white/light grey */
  --bg-card: rgba(255, 255, 255, 0.72);
  --bg-card-hover: rgba(255, 255, 255, 0.88);
  
  --primary: hsl(239, 84%, 58%); /* Deep Indigo */
  --primary-glow: hsla(239, 84%, 58%, 0.12);
  --primary-hover: hsl(239, 84%, 64%);
  
  --accent: hsl(150, 96%, 33%); /* Professional Emerald */
  --accent-glow: hsla(150, 96%, 33%, 0.15);
  --accent-hover: hsl(150, 96%, 38%);
  
  --text-primary: hsl(222, 47%, 12%); /* Dark Slate for high contrast */
  --text-secondary: hsl(218, 15%, 35%); /* Body Text Charcoal */
  --text-muted: hsl(218, 10%, 55%);
  
  --border-glass: rgba(226, 232, 240, 0.8); /* Neat light slate border */
  --border-glass-hover: rgba(110, 114, 252, 0.25);
  --border-accent: rgba(16, 185, 129, 0.4);
  
  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;
  
  /* Safe Gradient Interpolation Space Fallbacks */
  --in-oklab: ;
  --in-oklch: ;
}

@supports (linear-gradient(in oklab, white, black)) {
  :root {
    --in-oklab: in oklab;
    --in-oklch: in oklch;
  }
}

/* ==========================================================================
   2. Reset & Core Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  background: 
    radial-gradient(circle at 10% 20%, hsla(238, 83%, 66%, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, hsla(150, 96%, 40%, 0.02) 0%, transparent 40%),
    var(--bg-dark);
}

/* Premium Light Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 50px;
  border: 2.5px solid var(--bg-dark);
  transition: background 0.3s;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Common Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

/* ==========================================================================
   3. Glassmorphism & Layout Utilities
   ========================================================================== */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(9, 14, 36, 0.04), 0 1px 3px rgba(9, 14, 36, 0.01);
  transition: border-color 0.4s, background-color 0.4s, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s;
}

.glass-panel:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  box-shadow: 0 20px 40px rgba(9, 14, 36, 0.08);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section-padding {
  padding: var(--spacing-xxl) 0;
}

/* Section Titles */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg var(--in-oklch), var(--text-primary) 30%, var(--primary) 70%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header p {
  font-size: 1.1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-heading);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 2px solid transparent;
  gap: var(--spacing-xs);
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-accent {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}

.btn-secondary:hover {
  background: rgba(110, 114, 252, 0.06);
  transform: translateY(-2px);
}

/* ==========================================================================
   4. Header & Navigation (Light Style)
   ========================================================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: all 0.4s ease;
}

header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 5.5rem;
  padding: 0 var(--spacing-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
}

.logo span {
  background: linear-gradient(135deg var(--in-oklch), var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #ffffff;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

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

.nav-btn {
  display: flex;
  align-items: center;
}

/* Mobile Menu Icon */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.mobile-menu-toggle span:nth-child(1) { top: 0; }
.mobile-menu-toggle span:nth-child(2) { top: 10px; }
.mobile-menu-toggle span:nth-child(3) { top: 20px; }

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 10px;
}
.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 10px;
}

/* ==========================================================================
   5. Hero Section
   ========================================================================== */
.hero-section {
  min-height: 100vh;
  padding-top: 8.5rem;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
}

.tagline {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  background: rgba(110, 114, 252, 0.08);
  border: 1px solid rgba(110, 114, 252, 0.25);
  color: var(--primary);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tagline-accent {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent);
}

.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: var(--spacing-md);
}

.hero-content h1 span {
  display: block;
}

.hero-content h1 .gradient-text-1 {
  background: linear-gradient(135deg var(--in-oklch), var(--text-primary) 20%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content h1 .gradient-text-2 {
  background: linear-gradient(135deg var(--in-oklch), var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.15rem;
  margin-bottom: var(--spacing-lg);
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.hero-features-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
  border-top: 1px solid var(--border-glass);
  padding-top: var(--spacing-md);
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.hero-feature-item svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* Textbook White Cover Styling - Framed beautiful contrast shadows */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.glowing-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  max-width: 400px;
  max-height: 400px;
  background: radial-gradient(circle, rgba(110, 114, 252, 0.08) 0%, transparent 70%);
  filter: blur(40px);
  z-index: 1;
  pointer-events: none;
}

.mockup-wrapper {
  position: relative;
  z-index: 2;
  perspective: 1000px;
}

.mockup-img {
  width: 100%;
  max-width: 420px;
  border-radius: 6px !important;
  border: 1px solid rgba(0, 0, 0, 0.07) !important;
  box-shadow: 
    0 30px 70px rgba(9, 14, 36, 0.18), 
    0 0 2px rgba(9, 14, 36, 0.08) !important;
  transform: rotateY(-10deg) rotateX(4deg) rotateZ(-1deg);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  animation: float 6s ease-in-out infinite;
}

.mockup-wrapper:hover .mockup-img {
  transform: rotateY(0deg) rotateX(0deg) scale(1.02);
  box-shadow: 
    0 40px 80px rgba(9, 14, 36, 0.25), 
    0 0 20px hsla(150, 96%, 40%, 0.1) !important;
}

@keyframes float {
  0% { transform: translateY(0px) rotateY(-10deg) rotateX(4deg) rotateZ(-1deg); }
  50% { transform: translateY(-12px) rotateY(-12deg) rotateX(2deg) rotateZ(-0.5deg); }
  100% { transform: translateY(0px) rotateY(-10deg) rotateX(4deg) rotateZ(-1deg); }
}

/* ==========================================================================
   6. NCLEX Sandbox Widget
   ========================================================================== */
.sandbox-container {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.sandbox-details h2 {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.sandbox-details h2 span {
  color: var(--primary);
}

.sandbox-details p {
  margin-bottom: var(--spacing-md);
  font-size: 1.05rem;
}

.features-check {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.feature-check-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xs);
}

.feature-check-item svg {
  color: var(--accent);
  margin-top: 3px;
  flex-shrink: 0;
}

.feature-check-item strong {
  color: var(--text-primary);
  display: block;
  font-size: 0.95rem;
}

.feature-check-item span {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Sandbox Box Widget */
.sandbox-widget {
  padding: var(--spacing-lg);
  border-radius: 20px;
  position: relative;
  overflow: hidden;
  background: #ffffff !important;
  border: 1px solid rgba(226, 232, 240, 1);
  box-shadow: 0 15px 35px rgba(9, 14, 36, 0.05);
}

.sandbox-widget::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary), var(--accent));
}

.sandbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.sandbox-badge {
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(110, 114, 252, 0.1);
  color: var(--primary);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.sandbox-lang-toggle {
  display: flex;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 8px;
  padding: 2px;
}

.lang-tab {
  border: none;
  background: transparent;
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.lang-tab.active {
  background: #ffffff;
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* Question Area */
.question-container {
  min-height: 120px;
}

.question-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
}

/* Options */
.options-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.option-btn {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 1rem;
  text-align: left;
  border: 1px solid rgba(226, 232, 240, 1);
  background: #ffffff;
  border-radius: 12px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  gap: var(--spacing-sm);
}

.option-btn:hover {
  background: rgba(110, 114, 252, 0.04);
  border-color: rgba(110, 114, 252, 0.3);
  color: var(--text-primary);
  transform: translateX(4px);
}

.option-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.05);
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.85rem;
  transition: all 0.3s;
}

.option-btn:hover .option-letter {
  background: var(--primary);
  color: #ffffff;
}

/* Answer Selected States */
.option-btn.correct {
  border-color: var(--accent);
  background: hsla(150, 96%, 40%, 0.05);
  color: var(--text-primary);
}
.option-btn.correct .option-letter {
  background: var(--accent);
  color: #ffffff;
}

.option-btn.wrong {
  border-color: hsl(0, 84%, 55%);
  background: hsla(0, 84%, 60%, 0.04);
  color: var(--text-primary);
}
.option-btn.wrong .option-letter {
  background: hsl(0, 84%, 55%);
  color: #ffffff;
}

/* Expandable Nursing Rationale */
.rationale-box {
  border-top: 1px solid rgba(226, 232, 240, 1);
  padding-top: var(--spacing-sm);
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.rationale-box.show {
  display: block;
  opacity: 1;
}

.rationale-header-box {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--accent);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.rationale-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  padding: 0.75rem;
  background: rgba(16, 185, 129, 0.04);
  border-radius: 8px;
  border-left: 2.5px solid var(--accent);
}

/* ==========================================================================
   7. Localization & Target Markets
   ========================================================================== */
.market-section {
  position: relative;
  background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.015), transparent);
}

.market-tabs-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.market-flags {
  display: flex;
  gap: var(--spacing-sm);
  padding: 0.5rem;
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 1);
  border-radius: 50px;
  margin-bottom: var(--spacing-md);
  max-width: 100%;
  overflow-x: auto;
  box-shadow: 0 4px 12px rgba(0,0,0,0.02);
}

.flag-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.flag-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.15);
}

.flag-emoji {
  font-size: 1.25rem;
}

/* Market Panel Card */
.market-content-card {
  padding: var(--spacing-xl);
  border-radius: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  position: relative;
  overflow: hidden;
}

.market-left {
  display: flex;
  flex-direction: column;
}

.market-badge {
  display: inline-flex;
  align-self: flex-start;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--accent);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.market-left h3 {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.market-edition-title {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
}

.market-left p {
  margin-bottom: var(--spacing-lg);
  font-size: 1.05rem;
}

.market-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 1);
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 8px 25px rgba(0,0,0,0.02);
}

.price-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-xs);
}

.price-val {
  font-size: 3.5rem;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.price-note {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.market-testimonial {
  border-top: 1px solid rgba(226, 232, 240, 1);
  padding-top: var(--spacing-md);
  text-align: left;
  width: 100%;
}

.testimonial-text {
  font-style: italic;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.5;
}

.testimonial-author {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ==========================================================================
   8. Curriculum Roadmap (volumes)
   ========================================================================== */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

.volume-card {
  padding: var(--spacing-md);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.volume-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(226, 232, 240, 1);
}

.volume-card.active::before {
  background: linear-gradient(to right, var(--primary), var(--accent));
}

.volume-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
}

.volume-badge.coming-soon {
  color: var(--text-muted);
}

.volume-card h3 {
  font-size: 1.15rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.volume-card p {
  font-size: 0.85rem;
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.volume-status {
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

.volume-status.active {
  color: var(--accent);
}

.volume-status.inactive {
  color: var(--text-muted);
}


/* ==========================================================================
   9. Interactive Cart & Payment System (New Features)
   ========================================================================== */

/* Floating Cart Button */
.floating-cart {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  border: none;
  cursor: pointer;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(110, 114, 252, 0.4), 0 0 0 0px rgba(110, 114, 252, 0.4);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  animation: cartPulse 2s infinite;
}

@keyframes cartPulse {
  0% { box-shadow: 0 10px 25px rgba(110, 114, 252, 0.4), 0 0 0 0px rgba(110, 114, 252, 0.4); }
  70% { box-shadow: 0 10px 25px rgba(110, 114, 252, 0.4), 0 0 0 15px rgba(110, 114, 252, 0); }
  100% { box-shadow: 0 10px 25px rgba(110, 114, 252, 0.4), 0 0 0 0px rgba(110, 114, 252, 0); }
}

.floating-cart:hover {
  transform: scale(1.1) translateY(-5px);
  box-shadow: 0 15px 30px rgba(16, 185, 129, 0.5);
}

.cart-icon-wrapper {
  position: relative;
}

.cart-badge {
  position: absolute;
  top: -12px;
  right: -12px;
  background: hsl(0, 84%, 55%);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #ffffff;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  transition: all 0.3s;
}

/* Sidebar Cart Drawer Overlay */
.cart-drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(3, 6, 23, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

.cart-drawer-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Drawer Panel */
.cart-drawer-panel {
  position: absolute;
  top: 0;
  right: -450px;
  width: 100%;
  max-width: 440px;
  height: 100%;
  background: #ffffff;
  box-shadow: -10px 0 35px rgba(9, 14, 36, 0.1);
  display: flex;
  flex-direction: column;
  transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1060;
  border-left: 1px solid rgba(226, 232, 240, 1);
}

.cart-drawer-overlay.open .cart-drawer-panel {
  right: 0;
}

/* Drawer Header */
.cart-drawer-header {
  padding: 1.5rem;
  border-bottom: 1px solid rgba(226, 232, 240, 1);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cart-drawer-header h3 {
  font-size: 1.25rem;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 800;
}

.close-drawer-btn {
  background: transparent;
  border: none;
  font-size: 2rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s;
  line-height: 1;
}

.close-drawer-btn:hover {
  color: var(--text-primary);
}

/* Drawer Items List */
.cart-drawer-items {
  flex-grow: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.empty-cart-message {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

.empty-cart-message p {
  margin-bottom: var(--spacing-md);
  font-size: 1.05rem;
}

.cart-item {
  display: flex;
  gap: var(--spacing-sm);
  padding: 1rem;
  background: rgba(110, 114, 252, 0.02);
  border: 1px solid rgba(226, 232, 240, 1);
  border-radius: 12px;
  position: relative;
  align-items: center;
}

.cart-item-img {
  width: 50px;
  height: 65px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid rgba(226, 232, 240, 1);
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.cart-item-info {
  flex-grow: 1;
  text-align: left;
}

.cart-item-info h4 {
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 2px;
  font-weight: 700;
  line-height: 1.3;
}

.cart-item-edition {
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 4px;
  display: block;
}

.cart-item-price {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
}

.btn-remove-item {
  background: transparent;
  border: none;
  color: hsl(0, 84%, 55%);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.2s;
}

.btn-remove-item:hover {
  background: hsla(0, 84%, 60%, 0.05);
}

/* Drawer Footer */
.cart-drawer-footer {
  padding: 1.5rem;
  border-top: 1px solid rgba(226, 232, 240, 1);
  background: rgba(110, 114, 252, 0.01);
}

.cart-summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.cart-summary-row strong, .cart-summary-row #cart-subtotal {
  font-weight: 800;
  color: var(--text-primary);
}

.promo-row {
  font-size: 0.85rem;
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
}

/* Modals Overlay (Checkout / Success) */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(3, 6, 23, 0.6);
  backdrop-filter: blur(5px);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Modal Box Container */
.modal-container {
  width: 100%;
  max-width: 850px;
  background: #ffffff;
  border-radius: 24px;
  border: 1px solid rgba(226, 232, 240, 1);
  box-shadow: 0 25px 60px rgba(9, 14, 36, 0.15);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.9);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
}

.modal-overlay.open .modal-container {
  transform: scale(1);
}

.modal-header {
  padding: 1.25rem 2rem;
  border-bottom: 1px solid rgba(226, 232, 240, 1);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.3rem;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 800;
}

.close-modal-btn {
  background: transparent;
  border: none;
  font-size: 1.8rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

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

.modal-body {
  padding: 2rem;
  overflow-y: auto;
}

/* Grid Layout for Checkout modal */
.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.checkout-summary-col {
  border-right: 1px solid rgba(226, 232, 240, 1);
  padding-right: 2.5rem;
}

.checkout-summary-col h4, .checkout-payment-col h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.review-items-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
  max-height: 180px;
  overflow-y: auto;
}

.review-item-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.review-item-title {
  font-weight: 700;
  color: var(--text-primary);
}

.review-totals {
  border-top: 1px solid rgba(226, 232, 240, 1);
  padding-top: 1rem;
  margin-bottom: 1.5rem;
}

.review-total-row {
  display: flex;
  justify-content: space-between;
  font-size: 1.1rem;
}

.review-total-row strong {
  font-weight: 900;
  color: var(--primary);
  font-size: 1.25rem;
}

/* DRM Safety Card Banner */
.drm-safety-badge {
  display: flex;
  gap: 0.75rem;
  background: rgba(16, 185, 129, 0.04);
  border: 1px dashed rgba(16, 185, 129, 0.3);
  padding: 1rem;
  border-radius: 12px;
  align-items: flex-start;
  text-align: left;
}

.badge-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.drm-safety-badge strong {
  display: block;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 2px;
}

.drm-safety-badge p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Payment Tabs Options */
.payment-tabs {
  display: flex;
  background: rgba(0,0,0,0.03);
  padding: 4px;
  border-radius: 10px;
  gap: 2px;
  margin-bottom: 1.5rem;
}

.pay-tab {
  flex-grow: 1;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0.55rem 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: all 0.3s ease;
}

.pay-tab.active {
  background: #ffffff;
  color: var(--text-primary);
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.payment-panels {
  position: relative;
}

.payment-panel {
  display: none;
}

.payment-panel.active {
  display: block;
}

.panel-instruction {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.4;
  text-align: left;
}

/* PromptPay QR Code Visual Mockup */
.qr-code-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1.25rem;
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 1);
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}

.mock-qr-code {
  width: 160px;
  height: 160px;
  background-color: #f7f9fc;
  border: 4px solid #113566;
  border-radius: 12px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.qr-pattern-box {
  width: 130px;
  height: 130px;
  background-image: 
    linear-gradient(45deg, #113566 25%, transparent 25%), 
    linear-gradient(-45deg, #113566 25%, transparent 25%), 
    linear-gradient(45deg, transparent 75%, #113566 75%), 
    linear-gradient(-45deg, transparent 75%, #113566 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
  opacity: 0.85;
}

.mock-qr-code::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 10px;
  width: 32px;
  height: 32px;
  border: 6px solid #113566;
  background: #f7f9fc;
  box-sizing: border-box;
}

.mock-qr-code::after {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border: 6px solid #113566;
  background: #f7f9fc;
  box-sizing: border-box;
}

.qr-logo-overlay {
  position: absolute;
  background: #113566;
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 900;
  padding: 4px 6px;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  z-index: 10;
}

.mock-qr-code::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: qrScan 3s linear infinite;
  z-index: 8;
}

@keyframes qrScan {
  0% { top: 0%; }
  50% { top: 100%; }
  100% { top: 0%; }
}

.qr-timer {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
}

.qr-timer span {
  color: hsl(0, 84%, 55%);
  font-family: monospace;
}

.qr-payment-info {
  width: 100%;
  background: rgba(0,0,0,0.02);
  border-radius: 12px;
  padding: 0.75rem var(--spacing-md);
  margin-bottom: 1.25rem;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border: 1px solid rgba(226, 232, 240, 1);
  text-align: left;
}

/* Credit Card panel */
.form-group {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.form-group input {
  padding: 0.75rem var(--spacing-sm);
  border: 1px solid rgba(226, 232, 240, 1);
  border-radius: 8px;
  font-size: 0.9rem;
  outline: none;
  background: rgba(0,0,0,0.01);
  color: var(--text-primary);
  transition: all 0.3s;
}

.form-group input:focus {
  border-color: var(--primary);
  background: #ffffff;
  box-shadow: 0 0 10px var(--primary-glow);
}

.form-row {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-sm);
}

.input-icon-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon-wrap input {
  width: 100%;
  padding-right: 2.5rem;
}

.card-brand-icon {
  position: absolute;
  right: 12px;
  font-size: 1.2rem;
}

/* PayPal Buttons */
.paypal-buttons-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.btn-paypal-checkout {
  background: #FFC439;
  border: none;
  border-radius: 8px;
  padding: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.btn-paypal-checkout:hover {
  background: #F2BA36;
}

.paypal-logo {
  font-family: var(--font-heading);
  font-weight: 900;
  font-style: italic;
  color: #003087;
  font-size: 1.1rem;
}

.btn-paypal-card-checkout {
  background: #2C2E2F;
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 0.9rem;
}

.btn-paypal-card-checkout:hover {
  background: #202223;
}

/* Success Modal */
.success-container {
  max-width: 600px;
  text-align: center;
}

.success-header {
  background: linear-gradient(to bottom, rgba(16, 185, 129, 0.05), transparent);
  padding: 2.5rem 2rem 1rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.success-icon-badge {
  width: 72px;
  height: 72px;
  background: var(--accent);
  color: #ffffff;
  font-size: 2.2rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px var(--accent-glow);
  margin-bottom: 1.25rem;
}

.success-header h3 {
  font-size: 1.6rem;
  font-family: var(--font-heading);
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.success-header p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.success-body {
  padding: 1rem 2rem 2.5rem 2rem;
}

.success-main-p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.delivery-box {
  background: rgba(110, 114, 252, 0.02);
  border: 1px solid rgba(226, 232, 240, 1);
  padding: 1.5rem;
  border-radius: 16px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0,0,0,0.01);
}

.delivery-box h4 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: 6px;
}

.delivery-warning {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: 1rem;
}

.stamped-info-card {
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 1);
  border-radius: 10px;
  padding: 0.75rem var(--spacing-sm);
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 1.25rem;
}

.stamped-info-card strong {
  color: var(--text-primary);
}

.download-actions-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-sm);
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.75rem;
}

/* Double pricing layout grid for footprint markets section */
.market-right-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  width: 100%;
}

.price-tier-card {
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 1);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.01);
  transition: all 0.3s;
}

.price-tier-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.03);
  border-color: rgba(110, 114, 252, 0.2);
}

.price-tier-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.tier-highlighted {
  border-color: var(--accent);
  background: rgba(16, 185, 129, 0.01);
}

.tier-highlighted:hover {
  border-color: var(--accent-hover);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.08);
}

.price-tier-card .price-val {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.price-tier-card .price-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.btn-add-cart {
  font-size: 0.8rem !important;
  font-weight: 700 !important;
  padding: 0.65rem 1rem !important;
}

/* Nav elements gap fix and iPad menu responsive overrides */
nav {
  margin-left: 2.5rem;
}

footer {
  background: hsl(220, 25%, 95%);

  border-top: 1px solid rgba(226, 232, 240, 1);
  padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-brand p {
  font-size: 0.9rem;
}

.footer-links-col h4 {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-links-col a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid rgba(226, 232, 240, 0.5);
  padding-top: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.legal-links {
  display: flex;
  gap: var(--spacing-sm);
  list-style: none;
}

.legal-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.legal-links a:hover {
  color: var(--text-secondary);
}

/* ==========================================================================
   10. Responsiveness
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-lg);
  }
  
  .hero-content h1 {
    font-size: 3rem;
  }
  
  .tagline {
    align-self: center;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-features-list {
    justify-items: center;
  }
  
  .sandbox-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .market-content-card {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .roadmap-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  html {
    font-size: 15px;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 5.5rem;
    left: -100%;
    width: 100%;
    height: calc(100vh - 5.5rem);
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    padding: var(--spacing-xl) 0;
    gap: var(--spacing-md);
    transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .nav-btn {
    display: none;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .roadmap-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
}

/* Scroll Animation States */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   11. Internationalization, Social Links & Dropdowns
   ========================================================================== */

/* Header Actions Container */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Premium Global Language Dropdown */
.lang-dropdown {
  position: relative;
  display: inline-block;
}

.lang-dropbtn {
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 1);
  color: var(--text-primary);
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.lang-dropbtn:hover {
  background: rgba(110, 114, 252, 0.04);
  border-color: var(--primary);
}

.lang-dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  top: 115%;
  background: #ffffff;
  min-width: 145px;
  border: 1px solid rgba(226, 232, 240, 1);
  box-shadow: 0 10px 30px rgba(9, 14, 36, 0.08);
  border-radius: 12px;
  padding: 0.4rem;
  z-index: 1001;
  flex-direction: column;
  gap: 2px;
}

.lang-dropdown-content.show {
  display: flex;
}

.lang-dropdown-content button {
  color: var(--text-secondary);
  padding: 0.55rem 0.85rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-dropdown-content button:hover {
  background: rgba(110, 114, 252, 0.06);
  color: var(--primary);
}

/* Creator Social Media Links Panel */
.social-links-panel {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  width: 100%;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 8px;
  color: var(--text-secondary);
  border: 1px solid rgba(226, 232, 240, 1);
  background: #ffffff;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  text-transform: capitalize;
  box-shadow: 0 2px 4px rgba(0,0,0,0.01);
}

.social-btn:hover {
  transform: translateY(-2px);
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.social-btn.facebook:hover {
  background: #1877F2;
  border-color: #1877F2;
}

.social-btn.tiktok:hover {
  background: #010101;
  border-color: #010101;
}

.social-btn.line:hover {
  background: #06C755;
  border-color: #06C755;
}

.social-btn.youtube:hover {
  background: #FF0000;
  border-color: #FF0000;
}

.social-btn.telegram:hover {
  background: #24A1DE;
  border-color: #24A1DE;
}

/* Footer Social Icons */
.footer-socials {
  display: flex;
  gap: 10px;
  margin-top: var(--spacing-sm);
}

.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-secondary);
  border: 1px solid rgba(226, 232, 240, 1);
  background: #ffffff;
  transition: all 0.3s ease;
  box-shadow: 0 2px 5px rgba(0,0,0,0.01);
}

.footer-socials a:hover {
  transform: translateY(-2px);
  color: #ffffff;
  border-color: var(--primary);
  background: var(--primary);
  box-shadow: 0 4px 10px rgba(110, 114, 252, 0.2);
}

/* Responsive Overrides */
@media (max-width: 1024px) {
  .header-actions {
    margin-right: var(--spacing-sm);
  }
}

/* ==========================================================================
   8. Dynamic Theme Toggle & Dark Mode Styling
   ========================================================================== */
.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-glass-hover);
  color: var(--text-primary);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
  margin-right: 0.75rem;
}

.theme-toggle-btn:hover {
  background: var(--border-glass);
  border-color: var(--primary);
  color: var(--primary);
  transform: scale(1.05);
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --bg-dark: hsl(224, 71%, 4%);
  --bg-card: hsla(223, 47%, 11%, 0.65);
  --bg-card-hover: hsla(223, 47%, 15%, 0.8);
  
  --primary: hsl(239, 84%, 67%);
  --primary-glow: hsla(239, 84%, 67%, 0.25);
  --primary-hover: hsl(239, 84%, 73%);
  
  --accent: hsl(150, 96%, 40%);
  --accent-glow: hsla(150, 96%, 40%, 0.3);
  --accent-hover: hsl(150, 96%, 48%);
  
  --text-primary: hsl(0, 0%, 98%);
  --text-secondary: hsl(218, 15%, 65%);
  --text-muted: hsl(218, 12%, 45%);
  
  --border-glass: hsla(220, 20%, 95%, 0.08);
  --border-glass-hover: hsla(220, 20%, 95%, 0.18);
  --border-accent: hsla(150, 96%, 40%, 0.3);
}

[data-theme="dark"] body {
  background: 
    radial-gradient(circle at 10% 20%, hsla(238, 83%, 66%, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, hsla(150, 96%, 40%, 0.05) 0%, transparent 40%),
    var(--bg-dark);
}

[data-theme="dark"] header {
  background: rgba(4, 7, 20, 0.6);
  border-bottom: 1px solid var(--border-glass);
}

[data-theme="dark"] header.scrolled {
  background: rgba(4, 7, 20, 0.85);
}

[data-theme="dark"] .sandbox-widget {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-glass);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

[data-theme="dark"] .option-btn {
  border: 1px solid var(--border-glass);
  background: hsla(220, 20%, 95%, 0.02);
}

[data-theme="dark"] .option-btn:hover {
  background: hsla(220, 20%, 95%, 0.05);
}

[data-theme="dark"] .option-letter {
  background: hsla(220, 20%, 95%, 0.08);
}

[data-theme="dark"] .rationale-text {
  background: hsla(220, 20%, 95%, 0.03);
}

[data-theme="dark"] .market-flags {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
}

[data-theme="dark"] .price-tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
}

[data-theme="dark"] .price-tier-card.tier-highlighted {
  border-color: var(--accent);
  background: hsla(150, 96%, 40%, 0.04);
}

[data-theme="dark"] .btn-secondary {
  border: 1px solid var(--border-glass-hover);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-secondary:hover {
  background: hsla(220, 20%, 95%, 0.05);
  border-color: var(--text-primary);
}

[data-theme="dark"] .lang-tab.active {
  background: var(--bg-dark);
}

/* ==========================================================================
   9. Creator Section Grid Responsive Correction
   ========================================================================== */
@media (min-width: 1025px) {
  #creator-panel {
    display: grid !important;
    grid-template-columns: 0.8fr 1.2fr !important;
  }
}

@media (max-width: 1024px) {
  #creator-panel {
    display: grid !important;
    grid-template-columns: 1fr !important;
  }
}

/* ==========================================================================
   10. Mobile Navigation & Spacing Optimizations (Fits all elements side-by-side)
   ========================================================================== */
@media (max-width: 768px) {
  .logo {
    font-size: 1.25rem !important;
  }
  .logo-icon {
    width: 28px !important;
    height: 28px !important;
    font-size: 0.95rem !important;
  }
  .header-actions {
    gap: 0.35rem !important;
    margin-right: 0.25rem !important;
  }
  .theme-toggle-btn {
    width: 36px !important;
    height: 36px !important;
    margin-right: 0.15rem !important;
  }
  .lang-dropbtn {
    padding: 0.35rem 0.5rem !important;
    font-size: 0.8rem !important;
  }
  .mobile-menu-toggle {
    margin-left: 0.25rem !important;
    flex-shrink: 0 !important;
    display: block !important;
  }
}