/* ==========================================================================
   Worldwide LTD. - Lite Mode Design System
   SEO & Performance Optimized CSS
   ========================================================================== */

/* --- Custom CSS Variables --- */
:root {
  --bg-main: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-subtle: #F1F5F9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #EFF6FF;
  --accent-cyan: #0284C7;
  --accent-green: #10B981;
  --accent-orange: #F97316;
  --accent-purple: #8B5CF6;
  
  --text-main: #0F172A;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border-color: #E2E8F0;
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 10px 25px -5px rgba(37, 99, 235, 0.08);
  --shadow-lg: 0 20px 40px -15px rgba(15, 23, 42, 0.1);
  --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.25);
  
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

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

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

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

/* --- Layout Utility Classes --- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-title-wrapper {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem auto;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.badge-pill svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
}

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

/* --- Header / Navigation Bar --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-main);
}

.brand-logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  background: transparent;
  border: none;
  box-shadow: none;
  transition: var(--transition);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.1);
}

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

.nav-link {
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: var(--transition);
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  color: #FFFFFF;
  box-shadow: var(--shadow-md);
}

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

.btn-outline {
  background-color: #FFFFFF;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background-color: var(--bg-subtle);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-playstore {
  background-color: #0F172A;
  color: #FFFFFF;
  padding: 0.65rem 1.4rem;
  border-radius: 12px;
}

.btn-playstore:hover {
  background-color: #1E293B;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.15);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-main);
}

/* --- Hero Section --- */
.hero {
  padding-top: 10rem;
  padding-bottom: 5rem;
  background: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.08) 0%, rgba(248, 250, 252, 0) 70%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  max-width: 620px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

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

.stat-item h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  font-weight: 500;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

/* --- Phone Mockup Component --- */
.phone-mockup {
  position: relative;
  border-radius: 36px;
  background-color: #0F172A;
  padding: 10px;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.2), 0 0 0 2px rgba(226, 232, 240, 0.8);
  overflow: hidden;
  transition: var(--transition);
  max-width: 280px;
  margin: 0 auto;
}

.phone-mockup::before {
  content: '';
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 16px;
  background-color: #0F172A;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
  z-index: 10;
}

.phone-mockup img {
  width: 100%;
  height: auto;
  border-radius: 26px;
  display: block;
  object-fit: cover;
}

.phone-mockup:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 35px 70px -15px rgba(37, 99, 235, 0.3);
}

.hero-phone-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  position: relative;
  width: 100%;
}

.hero-phone-container .phone-mockup:nth-child(2) {
  transform: translateY(24px);
}

.hero-phone-container .phone-mockup:nth-child(2):hover {
  transform: translateY(16px) scale(1.02);
}

/* --- App Features Cards Showcase Section --- */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.app-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.app-card:hover {
  transform: translateY(-6px);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.12);
}

.app-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.app-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  object-fit: cover;
  box-shadow: var(--shadow-md);
}

.app-meta h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.app-meta .developer {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 600;
}

.app-tags {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.tag {
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--bg-subtle);
  color: var(--text-muted);
}

.tag-green {
  background-color: #ECFDF5;
  color: var(--accent-green);
}

.tag-blue {
  background-color: #EFF6FF;
  color: var(--primary);
}

.app-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.app-features-list {
  list-style: none;
  margin-bottom: 2rem;
  display: grid;
  gap: 0.75rem;
}

.app-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
}

.app-feature-item svg {
  width: 20px;
  height: 20px;
  fill: var(--accent-green);
  flex-shrink: 0;
}

.app-action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.playstore-badge-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background-color: #0F172A;
  color: #FFFFFF;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  transition: var(--transition);
}

.playstore-badge-link:hover {
  background-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.playstore-badge-link svg {
  width: 24px;
  height: 24px;
}

/* --- Detailed App Spotlight Section --- */
.spotlight-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  box-shadow: var(--shadow-lg);
  margin-bottom: 4rem;
}

.spotlight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.spotlight-grid.reverse {
  direction: rtl;
}

.spotlight-grid.reverse > * {
  direction: ltr;
}

.spotlight-image-box {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.spotlight-image-box img {
  width: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.spotlight-image-box:hover img {
  transform: scale(1.03);
}

/* --- Interactive Screenshots Slider/Gallery Section --- */
.gallery-section {
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.gallery-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.tab-btn {
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
  background-color: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

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

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 4px solid #FFFFFF;
  background-color: #FFFFFF;
  transition: var(--transition);
  cursor: pointer;
}

.gallery-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
}

/* --- Features & Value Proposition --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.3);
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-icon-wrapper svg {
  width: 28px;
  height: 28px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- Developer Banner CTA --- */
.dev-banner {
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.dev-banner-content {
  position: relative;
  z-index: 2;
  max-width: 650px;
  margin: 0 auto;
}

.dev-banner h2 {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 1rem;
}

.dev-banner p {
  font-size: 1.125rem;
  color: #94A3B8;
  margin-bottom: 2rem;
}

/* --- Footer Section --- */
.footer {
  background-color: #FFFFFF;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  font-size: 0.95rem;
}

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

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

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-light);
  font-size: 0.875rem;
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  
  .hero-content {
    margin: 0 auto;
  }
  
  .hero-buttons {
    justify-content: center;
  }

  .spotlight-grid, .spotlight-grid.reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
    direction: ltr;
  }

  .apps-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

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

  .mobile-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--bg-card);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    display: none;
  }

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

  .hero-title {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

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

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

  .spotlight-card {
    padding: 2rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}