/* ==========================================================================
   Scroll Stopper - Landing Page Stylesheet
   Design System: Mindful Glassmorphism Theme (Rose & Emerald Focus Tokens)
   ========================================================================== */

:root {
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Color Tokens */
  --bg-dark: #0B0F17;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  
  --primary: #F43F5E;
  --primary-hover: #E11D48;
  --primary-glow: rgba(244, 63, 94, 0.35);
  
  --secondary: #10B981;
  --secondary-glow: rgba(16, 185, 129, 0.3);
  
  --accent-purple: #8B5CF6;
  --accent-cyan: #06B6D4;
  --accent-amber: #F59E0B;
  
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(244, 63, 94, 0.3);
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(244, 63, 94, 0.25);
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background Ambient Glow Orbs */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.bg-glow-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.35) 0%, rgba(0, 0, 0, 0) 70%);
  top: -150px;
  left: -100px;
}

.bg-glow-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.3) 0%, rgba(0, 0, 0, 0) 70%);
  top: 35%;
  right: -150px;
  animation-delay: -6s;
}

.bg-glow-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.3) 0%, rgba(0, 0, 0, 0) 70%);
  bottom: 5%;
  left: 20%;
  animation-delay: -12s;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 30px) scale(1.08); }
  100% { transform: translate(-30px, 50px) scale(0.95); }
}

/* Reusable Glass Utility */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.shadow-blur {
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, #F43F5E 0%, #F97316 50%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Header & Nav */
.header {
  position: sticky;
  top: 16px;
  z-index: 100;
  max-width: 1200px;
  margin: 16px auto 0;
  border-radius: var(--radius-full);
  padding: 10px 24px;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.nav {
  display: flex;
  gap: 24px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-select {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}

.lang-select option {
  background-color: var(--bg-dark);
  color: var(--text-main);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #E11D48 100%);
  color: #FFF;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--primary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.btn-large {
  padding: 14px 28px;
  font-size: 1.05rem;
}

.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Main Layout */
.main-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}

/* Hero Section */
.hero-section {
  padding: 40px 0 80px;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.promo-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.3);
  font-size: 0.88rem;
  color: var(--primary);
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-glass);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Mock Browser & Feed Simulator */
.mock-browser {
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.9);
  border-bottom: 1px solid var(--border-glass);
}

.bar-circle {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.bar-circle.close { background-color: #FF5F56; }
.bar-circle.min { background-color: #FFBD2E; }
.bar-circle.max { background-color: #27C93F; }

.browser-title {
  margin-left: 12px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.demo-feed-container {
  position: relative;
  height: 480px;
  background: #090D14;
  overflow: hidden;
}

.demo-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: rgba(30, 41, 59, 0.7);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border-glass);
}

.feed-counter-badge {
  background: rgba(244, 63, 94, 0.2);
  border: 1px solid rgba(244, 63, 94, 0.4);
  color: var(--primary);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.demo-feed-scrollable {
  height: calc(100% - 40px);
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feed-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 16px;
}

.feed-card.highlight-card {
  border-color: rgba(244, 63, 94, 0.5);
  background: rgba(244, 63, 94, 0.1);
}

.feed-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.avatar {
  font-size: 1.2rem;
}

.feed-content {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Friction Overlay Modal */
.friction-overlay {
  position: absolute;
  inset: 0;
  background: rgba(11, 15, 23, 0.88);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 10;
  transition: opacity 0.3s ease;
}

.friction-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.friction-card {
  text-align: center;
  max-width: 360px;
  width: 100%;
  padding: 28px 24px;
  border-color: rgba(244, 63, 94, 0.4);
  box-shadow: 0 0 40px rgba(244, 63, 94, 0.25);
}

.friction-icon {
  font-size: 2.8rem;
  margin-bottom: 12px;
}

.friction-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.friction-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* Breathing Ring Animation */
.breathing-circle-container {
  position: relative;
  width: 110px;
  height: 110px;
  margin: 0 auto 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.breathing-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid var(--secondary);
  box-shadow: 0 0 25px var(--secondary-glow);
  animation: pulseBreath 4s ease-in-out infinite;
}

@keyframes pulseBreath {
  0%, 100% { transform: scale(0.85); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 1; }
}

.breathing-timer {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary);
  z-index: 1;
}

.breathing-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  z-index: 1;
}

.friction-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Features Grid */
.features-section {
  padding: 100px 0;
}

.section-heading {
  margin-bottom: 60px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  margin-top: 12px;
  margin-bottom: 16px;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  padding: 32px;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glass-hover);
  background: var(--bg-card-hover);
}

.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: 12px;
}

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

/* Privacy Section */
.privacy-section {
  padding: 40px 0 80px;
}

.about-card {
  padding: 48px;
}

.about-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: 16px;
}

.about-text {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 24px;
  max-width: 800px;
}

.privacy-highlights {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.privacy-pill {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--secondary);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
}

/* FAQ Accordion */
.faq-section {
  padding: 60px 0;
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.4rem;
  color: var(--primary);
  transition: transform var(--transition-fast);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-in-out, padding 0.35s ease-in-out;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px;
}

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

/* CTA Banner */
.cta-banner {
  padding: 60px 0 100px;
}

.cta-card {
  padding: 60px 24px;
}

.cta-card h2 {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.cta-card p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

/* Footer */
.footer-section {
  border-top: 1px solid var(--border-glass);
  padding: 40px 24px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.footer-links {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  gap: 16px;
}

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

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

.text-center {
  text-align: center;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .nav {
    display: none;
  }
}