/* ==========================================================================
   TESU APP - MODERN SEO PROMOTIONAL WEBSITE STYLESHEET
   Aesthetics: Sleek Dark Glassmorphism, Electric Cyan/Indigo Accents, Micro-interactions
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@500;600;700;800;900&display=swap');

:root {
  /* Color Palette */
  --primary: #0088cc;
  --primary-light: #00c6ff;
  --primary-dark: #006699;
  --primary-glow: rgba(0, 198, 255, 0.35);
  
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.35);
  
  --secondary: #10b981;
  --secondary-glow: rgba(16, 185, 129, 0.3);

  /* Backgrounds */
  --bg-dark: #080c14;
  --bg-darker: #04070d;
  --bg-surface: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-strong: rgba(255, 255, 255, 0.07);

  /* Borders */
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 198, 255, 0.3);
  --border-accent: rgba(99, 102, 241, 0.3);

  /* Typography */
  --text-main: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Typography Fonts */
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', 'Plus Jakarta Sans', sans-serif;

  /* Layout & Spacing */
  --container-max: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background: 
    radial-gradient(circle at 15% 15%, rgba(0, 136, 204, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 25%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 50% 75%, rgba(0, 198, 255, 0.08) 0%, transparent 50%),
    var(--bg-dark);
  background-attachment: fixed;
}

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

h1 {
  font-size: clamp(2.3rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

/* Gradient Text Utilities */
.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #00c6ff 50%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-text-alt {
  background: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Navbar */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: all var(--transition-normal);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(8, 12, 20, 0.7);
  border-bottom: 1px solid var(--border-glass);
}

.site-header.scrolled {
  padding: 0.75rem 0;
  background: rgba(8, 12, 20, 0.9);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
}

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 15px var(--primary-glow);
  transition: transform var(--transition-fast);
}

.brand-logo:hover .brand-icon {
  transform: scale(1.08) rotate(-3deg);
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  position: relative;
  padding: 0.4rem 0;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

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

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* Buttons & Badges */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #0088cc 0%, #00c6ff 100%);
  color: #ffffff;
  box-shadow: 0 8px 25px var(--primary-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(0, 198, 255, 0.55);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-playstore {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  border: 1px solid var(--border-glass);
  color: #fff;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  transition: all var(--transition-normal);
}

.btn-playstore:hover {
  border-color: var(--primary-light);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px var(--primary-glow);
}

.btn-playstore img {
  width: 28px;
  height: 28px;
}

.btn-playstore .btn-text {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.1;
}

.btn-playstore .btn-subtitle {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.btn-playstore .btn-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

.btn-secondary {
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  color: #fff;
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.badge-glow {
  background: rgba(0, 198, 255, 0.1);
  border: 1px solid rgba(0, 198, 255, 0.3);
  color: var(--primary-light);
  box-shadow: 0 0 20px rgba(0, 198, 255, 0.15);
}

.badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
  animation: pulseDot 1.8s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

/* Hero Section */
.hero-section {
  padding: 9rem 0 5rem 0;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-title {
  margin-top: 0.5rem;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  align-items: center;
  margin-top: 0.8rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-glass);
}

.stat-item h4 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Phone Mockup Showcase */
.phone-mockup-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-glow-orb {
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary-glow) 0%, var(--accent-glow) 60%, transparent 80%);
  filter: blur(50px);
  z-index: 1;
  animation: orbFloat 6s ease-in-out infinite alternate;
}

@keyframes orbFloat {
  0% { transform: translateY(-10px) scale(0.95); }
  100% { transform: translateY(15px) scale(1.05); }
}

.phone-frame {
  position: relative;
  z-index: 2;
  width: 280px;
  height: 570px;
  background: #000;
  border: 10px solid #1e293b;
  border-radius: 40px;
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.7),
    0 0 35px rgba(0, 198, 255, 0.25);
  overflow: hidden;
  transform: perspective(1000px) rotateY(-8deg) rotateX(4deg);
  transition: transform var(--transition-normal);
}

.phone-frame:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg) translateY(-8px);
}

.phone-notch {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 18px;
  background: #1e293b;
  border-radius: var(--radius-full);
  z-index: 10;
}

.phone-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Floating Info Cards */
.floating-card {
  position: absolute;
  z-index: 3;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-md);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  animation: floatCard 4s ease-in-out infinite alternate;
}

.floating-card-1 {
  top: 15%;
  left: -15%;
  animation-delay: 0s;
}

.floating-card-2 {
  bottom: 15%;
  right: -10%;
  animation-delay: 1.5s;
}

@keyframes floatCard {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-12px); }
}

.floating-card-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(0, 198, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 1.2rem;
}

.floating-card-text strong {
  display: block;
  font-size: 0.9rem;
  color: #fff;
}

.floating-card-text span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Section Common */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 4rem auto;
}

.section-tag {
  color: var(--primary-light);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: block;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
}

/* Glass Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.glass-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 25px rgba(0, 198, 255, 0.15);
}

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

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

.feature-card-icon {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 198, 255, 0.15) 0%, rgba(99, 102, 241, 0.15) 100%);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.4rem;
  color: var(--primary-light);
}

.feature-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.feature-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.2rem;
}

.feature-keywords span {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
}

/* Fair Use & Legal Disclaimer Box */
.fair-use-box {
  background: rgba(16, 185, 129, 0.06);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.4rem;
  margin-top: 1.5rem;
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.fair-use-box-icon {
  font-size: 1.3rem;
  color: var(--secondary);
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.fair-use-box p {
  font-size: 0.86rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin: 0;
}

.fair-use-box strong {
  color: #fff;
}

.fair-use-banner {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(15, 23, 42, 0.9) 100%);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  margin: 3rem 0;
}

.fair-use-banner h4 {
  color: #10b981;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.fair-use-banner p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* In-App Browser & Interactive Live Demo Box */
.interactive-chat-hub {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.92) 0%, rgba(8, 12, 20, 0.98) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 198, 255, 0.2);
  margin-bottom: 5rem;
}

.demo-tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 1rem;
  overflow-x: auto;
}

.demo-tab-btn {
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.demo-tab-btn.active, .demo-tab-btn:hover {
  background: rgba(0, 198, 255, 0.15);
  border-color: var(--primary-light);
  color: #fff;
}

.chat-preview-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.chat-mock-card {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.chat-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background var(--transition-fast);
  border-radius: var(--radius-md);
}

.chat-item-row:hover {
  background: rgba(255, 255, 255, 0.04);
}

.dictionary-demo-card {
  background: rgba(99, 102, 241, 0.06);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
}

.dict-word-highlight {
  background: rgba(0, 198, 255, 0.25);
  color: #00c6ff;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  cursor: pointer;
  border-bottom: 2px solid #00c6ff;
  font-weight: 600;
}

.dict-popup-box {
  background: #1e293b;
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-top: 1rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.3s ease;
}

/* Steps / How It Works */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  position: relative;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.2rem 1.8rem;
  position: relative;
}

.step-number {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.05);
  line-height: 1;
}

.step-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 1.4rem;
  box-shadow: 0 4px 15px var(--primary-glow);
}

/* Comparison Table */
.comparison-container {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-glass);
  background: var(--bg-card);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th, 
.comparison-table td {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-glass);
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

.comparison-table th.highlight,
.comparison-table td.highlight {
  background: rgba(0, 198, 255, 0.07);
  color: #fff;
}

.comparison-table td {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.table-check {
  color: #10b981;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.table-cross {
  color: #ef4444;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* FAQ Accordion */
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.active {
  border-color: var(--border-glow);
  box-shadow: 0 10px 25px rgba(0, 198, 255, 0.1);
}

.faq-question {
  width: 100%;
  padding: 1.4rem 1.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  gap: 1rem;
}

.faq-icon {
  font-size: 1.3rem;
  transition: transform var(--transition-fast);
  color: var(--primary-light);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.8rem;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.8rem 1.4rem 1.8rem;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, rgba(0, 136, 204, 0.25) 0%, rgba(99, 102, 241, 0.25) 100%), var(--bg-surface);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
}

.cta-banner h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.cta-banner p {
  max-width: 650px;
  margin: 1rem auto 2rem auto;
  font-size: 1.15rem;
}

/* SEO Keyword Cloud Box */
.seo-keywords-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  margin-top: 4rem;
}

.seo-keywords-box h4 {
  font-size: 0.95rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.keywords-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.keywords-tags a, .keywords-tags span {
  font-size: 0.8rem;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.keywords-tags a:hover {
  color: var(--primary-light);
  border-color: var(--border-glow);
  background: rgba(0, 198, 255, 0.1);
}

/* Footer */
.site-footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border-glass);
  padding: 5rem 0 2rem 0;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 1rem;
  max-width: 320px;
}

.footer-column h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.2rem;
}

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

.footer-links a {
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-glass);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.disclaimer-text {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.5;
  margin-top: 1rem;
  max-width: 900px;
}

/* Mobile Sticky Download Bar */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(8, 12, 20, 0.95);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-glass);
  padding: 0.75rem 1.25rem;
  z-index: 999;
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.6);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-content {
    align-items: center;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-stats {
    width: 100%;
    max-width: 500px;
  }

  .phone-mockup-wrapper {
    margin-top: 2rem;
  }

  .chat-preview-container {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(8, 12, 20, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-glass);
    display: none;
  }

  .nav-menu.open {
    display: flex;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
  }

  .stat-item h4 {
    font-size: 1.3rem;
  }

  .floating-card {
    display: none;
  }

  .mobile-sticky-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  body {
    padding-bottom: 70px;
  }
}

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

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn, 
  .hero-cta-group .btn-playstore {
    width: 100%;
    justify-content: center;
  }
}