/* ==========================================================================
   SocialShout Enterprise Landing Page - Universal Cross-Browser Stylesheet
   Full native responsiveness for Chrome, Firefox, Safari (iOS & macOS), Edge, Opera, Brave
   ========================================================================== */

:root {
  --landing-primary: #465FFF;
  --landing-primary-hover: #3641F5;
  --landing-dark: #0F172A;
  --landing-dark-hover: #1E293B;
  --landing-accent: #00D2D3;
  --landing-emerald: #10B981;
  --landing-bg-gradient: radial-gradient(circle at 50% 0%, rgba(70, 95, 255, 0.08) 0%, transparent 60%),
                         radial-gradient(circle at 100% 30%, rgba(0, 210, 211, 0.06) 0%, transparent 50%),
                         #FFFFFF;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body.landing-body {
  font-family: 'Public Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
  background: var(--landing-bg-gradient);
  color: #1E293B;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  width: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container Constraint */
.landing-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ==========================================================================
   1. Modern Navigation Header
   ========================================================================== */
.landing-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: all 0.25s ease;
}

.landing-header .brand-logo-img {
  height: 38px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  display: block;
}

.landing-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.landing-nav-link {
  color: #475569;
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.15s ease;
}
.landing-nav-link:hover {
  color: #0F172A;
}

.landing-auth-btns {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Nav Drawer */
.mobile-nav-menu-box {
  display: none;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 20px;
  margin-top: 12px;
  box-shadow: 0 12px 30px -8px rgba(0, 0, 0, 0.12);
  animation: landingSlideDown 0.2s ease;
}
.mobile-nav-menu-box.open {
  display: block;
}
@keyframes landingSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   2. Hero Section
   ========================================================================== */
.landing-hero-section {
  padding: 50px 0 70px 0;
  position: relative;
}
@media (min-width: 992px) {
  .landing-hero-section {
    padding: 70px 0 90px 0;
  }
}

.hero-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 9999px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  color: #0F172A;
  font-size: 12.5px;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  margin-bottom: 22px;
}

.hero-main-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #0F172A;
  margin-bottom: 18px;
}
@media (min-width: 768px) {
  .hero-main-title {
    font-size: 3.25rem;
  }
}
@media (min-width: 1200px) {
  .hero-main-title {
    font-size: 3.75rem;
  }
}

.hero-subtitle {
  font-size: 16.5px;
  line-height: 1.6;
  color: #475569;
  max-width: 540px;
  margin-bottom: 30px;
}
@media (min-width: 768px) {
  .hero-subtitle {
    font-size: 18px;
  }
}

.hero-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 12px;
  background: #0F172A;
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none !important;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.25);
  transition: all 0.2s ease;
}
.hero-btn-primary:hover {
  background: #1E293B;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.35);
}

.hero-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 12px;
  background: #FFFFFF;
  color: #0F172A !important;
  border: 1.5px solid #E2E8F0;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none !important;
  transition: all 0.2s ease;
}
.hero-btn-secondary:hover {
  border-color: #94A3B8;
  background: #F8FAFC;
  transform: translateY(-2px);
}

/* Floating Hero Image Box */
.hero-art-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}
.hero-floating-svg {
  width: 100%;
  max-width: 480px;
  height: auto;
  aspect-ratio: 448 / 348;
  object-fit: contain;
  display: block;
  animation: floatHeroAnim 4.8s ease-in-out infinite;
  filter: drop-shadow(0 20px 35px rgba(70, 95, 255, 0.16));
  -webkit-filter: drop-shadow(0 20px 35px rgba(70, 95, 255, 0.16));
  transition: transform 0.3s ease;
}
@keyframes floatHeroAnim {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-14px); }
}

.hero-ambient-glow {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(70, 95, 255, 0.22) 0%, rgba(0, 210, 211, 0.12) 50%, transparent 70%);
  filter: blur(40px);
  -webkit-filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

/* ==========================================================================
   3. Integrations Row
   ========================================================================== */
.integrations-bar {
  padding: 36px 0;
  border-top: 1px solid #F1F5F9;
  border-bottom: 1px solid #F1F5F9;
  text-align: center;
}
.integrations-title {
  color: #94A3B8;
  font-size: 11.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
.integrations-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 28px;
}
.integration-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: #334155;
  transition: color 0.15s ease;
  user-select: none;
}
.integration-item i {
  font-size: 20px;
}
.integration-item:hover {
  color: #0F172A;
}

/* ==========================================================================
   4. Features Grid
   ========================================================================== */
.features-section {
  padding: 80px 0 60px 0;
}
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 9999px;
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
  color: #0F172A;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 14px;
}
.section-heading {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: #0F172A;
  margin-bottom: 12px;
}
@media (min-width: 768px) {
  .section-heading { font-size: 2.75rem; }
}
.section-description {
  font-size: 16px;
  color: #64748B;
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.6;
}

.feature-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.feature-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 18px;
  padding: 26px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.02);
  transition: all 0.22s ease;
}
.feature-card:hover {
  border-color: #CBD5E1;
  transform: translateY(-3px);
  box-shadow: 0 12px 28px -6px rgba(0, 0, 0, 0.08);
}
.feature-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: #0F172A;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}
.feature-card:hover .feature-icon-box {
  transform: scale(1.08);
  background: #465FFF;
}
.feature-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 6px;
}
.feature-card p {
  font-size: 13.5px;
  color: #64748B;
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   5. Interactive ROI Calculator
   ========================================================================== */
.calculator-card-wrapper {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 24px;
  padding: 36px 28px;
  margin-top: 70px;
}
@media (min-width: 768px) {
  .calculator-card-wrapper {
    padding: 48px 40px;
  }
}

.roi-stat-box {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 18px;
  padding: 32px 24px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.03);
}
.roi-stat-amount {
  font-size: 2.5rem;
  font-weight: 900;
  color: #0F172A;
  letter-spacing: -0.03em;
  margin: 10px 0;
}
@media (min-width: 768px) {
  .roi-stat-amount {
    font-size: 3rem;
  }
}

/* ==========================================================================
   6. Pricing Section
   ========================================================================== */
.pricing-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
  margin-top: 48px;
  align-items: stretch;
}
.pricing-card {
  background: #FFFFFF;
  border: 2px solid #E2E8F0;
  border-radius: 20px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.22s ease;
}
.pricing-card:hover {
  border-color: #94A3B8;
  transform: translateY(-2px);
}
.pricing-card.popular {
  border: none;
  box-shadow: 0 20px 40px -10px rgba(70, 95, 255, 0.18);
}

.pricing-title {
  font-size: 22px;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 4px;
}
.pricing-desc {
  font-size: 13.5px;
  color: #64748B;
  margin-bottom: 22px;
}
.pricing-amount-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
}
.pricing-amount {
  font-size: 2.75rem;
  font-weight: 900;
  color: #0F172A;
  letter-spacing: -0.03em;
}
.pricing-period {
  font-size: 14px;
  color: #64748B;
}

.pricing-features-list {
  list-style: none;
  margin: 0 0 28px 0;
  padding: 0;
}
.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: #334155;
  margin-bottom: 12px;
}
.pricing-feature-item i {
  color: #10B981;
  font-size: 16px;
  font-weight: bold;
  flex-shrink: 0;
}

/* ==========================================================================
   7. FAQ & CTA Banner
   ========================================================================== */
.faq-box-item {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 14px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}
.faq-box-item h4 {
  font-size: 16.5px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 8px;
}
.faq-box-item p {
  font-size: 14px;
  color: #64748B;
  line-height: 1.6;
  margin: 0;
}

.cta-banner-wrapper {
  background: #020617;
  border-radius: 24px;
  padding: 48px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: 80px;
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.4);
}
@media (min-width: 768px) {
  .cta-banner-wrapper {
    padding: 64px 48px;
  }
}
.cta-banner-wrapper h2 {
  color: #FFFFFF;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
}
@media (min-width: 768px) {
  .cta-banner-wrapper h2 {
    font-size: 2.75rem;
  }
}
.cta-banner-wrapper p {
  color: #94A3B8;
  font-size: 16px;
  max-width: 540px;
  margin: 0 auto 28px auto;
}

/* ==========================================================================
   8. Footer
   ========================================================================== */
.landing-footer {
  padding: 40px 0;
  margin-top: 60px;
  border-top: 1px solid #E2E8F0;
  color: #64748B;
  font-size: 13px;
}
.landing-footer a {
  color: #64748B;
  text-decoration: none;
  transition: color 0.15s ease;
}
.landing-footer a:hover {
  color: #0F172A;
}

/* ==========================================================================
   9. Modern Floating Back to Top Button
   ========================================================================== */
#back-to-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 25px -4px rgba(15, 23, 42, 0.4), 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.85);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  outline: none;
}

#back-to-top-btn i {
  font-size: 20px;
  line-height: 1;
  transition: transform 0.25s ease;
}

#back-to-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

#back-to-top-btn:hover {
  background: linear-gradient(135deg, #465FFF 0%, #3641F5 100%);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 14px 30px -4px rgba(70, 95, 255, 0.55), 0 6px 15px rgba(0, 0, 0, 0.15);
  transform: translateY(-4px) scale(1.08);
}

#back-to-top-btn:hover i {
  transform: translateY(-3px);
}

#back-to-top-btn:active {
  transform: translateY(0) scale(0.95);
}

@media (max-width: 768px) {
  #back-to-top-btn {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
  #back-to-top-btn i {
    font-size: 18px;
  }
}