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

:root {
  --primary: #00D4E0;
  --secondary: #8B5CF6;
  --foreground: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --bg: #ffffff;
  --bg-muted: #f8fafc;
  --radius: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
  --shadow-button: 0 4px 14px rgba(0,212,224,0.35);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--foreground);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 0 1.5rem;
  height: 2.75rem;
}
.btn-primary:hover { opacity: 0.9; }

.btn-outline {
  background: #fff;
  color: var(--foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 0 1.5rem;
  height: 2.75rem;
}
.btn-outline:hover { background: var(--bg-muted); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  padding: 0 1rem;
  height: 2.75rem;
  border-radius: var(--radius);
}
.btn-ghost:hover { color: var(--foreground); }

.btn-lg {
  height: 3.5rem;
  padding: 0 2rem;
  font-size: 1rem;
  border-radius: var(--radius-xl);
}

.btn-cta { width: 100%; }

/* GRADIENT TEXT */
.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-primary { color: var(--primary); }

/* SECTION LABELS */
.section-label {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.75rem;
}
.label-primary { color: var(--primary); }
.label-secondary { color: var(--secondary); }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 4rem;
}
.section-header h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: var(--foreground);
}
.section-header p {
  font-size: 1.125rem;
  color: var(--muted);
}

/* NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 72px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  animation: slideDown 0.5s ease;
}
@keyframes slideDown {
  from { transform: translateY(-20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  width: 100%;
}
.navbar-logo img { height: 32px; }
.navbar-links {
  display: none;
  align-items: center;
  gap: 2rem;
}
.navbar-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s;
}
.navbar-links a:hover { color: var(--secondary); }

.navbar-actions {
  display: none;
  align-items: center;
  gap: 1rem;
}

.mobile-menu-btn {
  display: flex;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--foreground);
  padding: 0.5rem;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem 1.5rem 1.5rem;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--muted);
  padding: 0.5rem 0;
}

/* HERO */
.hero {
  position: relative;
  padding: 4rem 1.5rem 6rem;
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg-white {
  position: absolute;
  inset: 0;
  background: #fff;
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image: radial-gradient(circle, #E2E2EC 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
#particles-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: multiply;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.hero-text h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.08;
  margin-bottom: 1.5rem;
}
.hero-subtitle {
  font-size: 1.125rem;
  color: var(--muted);
  margin-bottom: 2rem;
  max-width: 540px;
  line-height: 1.7;
}
.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
}
.hero-buttons .btn { width: 100%; }
.hero-note {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 1rem;
  font-weight: 500;
}

.hero-mascot {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  aspect-ratio: 1;
  max-width: 500px;
  margin: 0 auto;
}
.hero-mascot-glow {
  position: absolute;
  inset: 0;
  background: rgba(0,212,224,0.05);
  border-radius: 50%;
  filter: blur(100px);
}
.hero-mascot > img {
  width: 85%;
  position: relative;
  z-index: 10;
  align-self: center;
}

/* FLOATING MASCOT ANIMATION */
.mascot-float {
  animation: float 4s ease-in-out infinite;
}
.mascot-float-slow {
  animation: float 5s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* FLOATING CARDS */
.floating-card {
  position: absolute;
  background: #fff;
  padding: 1rem;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(226,232,240,0.5);
  z-index: 20;
}
.floating-card-top {
  top: 10%;
  right: 0;
  animation: floatCard 5s ease-in-out infinite;
}
.floating-card-bottom {
  bottom: 20%;
  left: 0;
  animation: floatCard 6s ease-in-out infinite reverse;
}
@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}
.floating-card-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.time-badge {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8125rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.time-badge-primary {
  background: rgba(0,212,224,0.1);
  color: var(--primary);
}
.time-badge-green {
  background: rgba(16,185,129,0.1);
  color: #059669;
}
.floating-card-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--foreground);
}
.floating-card-sub {
  font-size: 0.75rem;
  color: var(--muted);
}

/* SCROLL INDICATOR */
.scroll-indicator {
  position: absolute;
  bottom: 4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226,232,240,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  cursor: pointer;
  animation: bounce 1.5s ease-in-out infinite;
  transition: background 0.2s;
}
.scroll-indicator:hover { background: #fff; }
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* WAVE DIVIDERS */
.wave-bottom, .wave-top {
  position: absolute;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  z-index: 10;
}
.wave-bottom { bottom: -1px; }
.wave-top { top: -1px; }
.wave-bottom svg, .wave-top svg {
  position: relative;
  display: block;
  width: calc(100% + 1.3px);
}
.wave-bottom svg { transform: rotate(180deg); }
.wave-hero svg { height: 60px; }
.wave-pain svg { height: 40px; }
.wave-features svg { height: 40px; }
.wave-how svg { height: 40px; }
.wave-top svg { height: 40px; }

/* PAIN POINTS */
.pain-points {
  padding: 6rem 1.5rem 8rem;
  background: var(--bg-muted);
  position: relative;
  overflow: hidden;
}
.pain-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.pain-card {
  background: #fff;
  border-radius: var(--radius-3xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226,232,240,0.6);
  transition: box-shadow 0.3s;
}
.pain-card:hover { box-shadow: var(--shadow-md); }
.pain-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-2xl);
  background: rgba(139,92,246,0.1);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.pain-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.3;
}
.pain-card p {
  color: var(--muted);
  line-height: 1.7;
}
.pain-tagline {
  margin-top: 4rem;
  text-align: center;
}
.pain-tagline p {
  font-size: 1.25rem;
  font-weight: 600;
  background: #fff;
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

/* FEATURES */
.features {
  padding: 6rem 1.5rem 8rem;
  background: #fff;
  position: relative;
  overflow: hidden;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.feature-card {
  position: relative;
  background: var(--bg-muted);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226,232,240,0.5);
  overflow: hidden;
  transition: all 0.3s;
}
.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.feature-hover-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom right, rgba(0,212,224,0.05), rgba(139,92,246,0.05));
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.feature-card:hover .feature-hover-bg { opacity: 1; }
.feature-inner { position: relative; z-index: 10; }
.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-xl);
  background: #fff;
  box-shadow: var(--shadow-sm);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: transform 0.3s;
}
.feature-card:hover .feature-icon { transform: scale(1.1); }
.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.feature-card p {
  color: var(--muted);
  line-height: 1.7;
}

/* HOW IT WORKS */
.how-it-works {
  padding: 6rem 1.5rem 8rem;
  background: var(--bg-muted);
  position: relative;
  overflow: hidden;
}
.how-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
  align-items: center;
}
.how-steps h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}
.how-subtitle {
  font-size: 1.125rem;
  color: var(--muted);
  margin-bottom: 3rem;
}

.steps-list { display: flex; flex-direction: column; gap: 0; }
.step-item {
  display: flex;
  gap: 1.5rem;
}
.step-indicator {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.step-number {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: #fff;
  border: 2px solid rgba(0,212,224,0.2);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  z-index: 10;
  position: relative;
  font-family: 'Plus Jakarta Sans', sans-serif;
  transition: all 0.3s;
}
.step-item:hover .step-number {
  background: var(--primary);
  color: #fff;
}
.step-line {
  width: 2px;
  flex: 1;
  background: var(--border);
  margin: -0.5rem 0;
  transition: background 0.3s;
}
.step-item:hover .step-line { background: rgba(0,212,224,0.3); }
.step-item.last .step-line { display: none; }
.step-content {
  padding-bottom: 2rem;
  padding-top: 0.5rem;
}
.step-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.step-content p {
  color: var(--muted);
  line-height: 1.7;
}

.how-cta-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  cursor: pointer;
  width: fit-content;
}
.how-cta-circle {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: rgba(0,212,224,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: all 0.3s;
}
.how-cta-link:hover .how-cta-circle {
  background: var(--primary);
  color: #fff;
}
.how-cta-title {
  font-weight: 700;
  color: var(--foreground);
}
.how-cta-sub {
  font-size: 0.875rem;
  color: var(--muted);
}

.how-mascot {
  display: none;
  position: relative;
  justify-content: center;
}
.how-mascot-glow {
  position: absolute;
  width: 75%;
  height: 75%;
  margin: auto;
  inset: 0;
  background: rgba(0,212,224,0.1);
  border-radius: 50%;
  filter: blur(100px);
}
.how-mascot img {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 400px;
  filter: drop-shadow(0 25px 25px rgba(0,0,0,0.15));
}

/* TESTIMONIALS */
.testimonials {
  padding: 6rem 1.5rem;
  background: #fff;
  position: relative;
  overflow: hidden;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.testimonial-card {
  background: var(--bg-muted);
  border-radius: var(--radius-2xl);
  padding: 2rem;
  border: 1px solid rgba(226,232,240,0.5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s, transform 0.3s;
}
.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.testimonial-stars {
  display: flex;
  gap: 0.2rem;
  margin-bottom: 1rem;
}
.testimonial-text {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--foreground);
  margin-bottom: 1.5rem;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.testimonial-avatar {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-weight: 700;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.testimonial-name {
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--foreground);
}
.testimonial-role {
  font-size: 0.8125rem;
  color: var(--muted);
}

/* FAQ */
.faq {
  padding: 6rem 1.5rem;
  background: #fff;
  position: relative;
  overflow: hidden;
}
.faq-container { max-width: 800px; }
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.faq-item {
  border: 1px solid rgba(226,232,240,0.5);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  background: #fff;
  transition: all 0.3s;
}
.faq-item.active {
  background: var(--bg-muted);
  box-shadow: var(--shadow-sm);
}
.faq-item:hover:not(.active) { background: rgba(248,250,252,0.5); }
.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1rem;
  color: var(--foreground);
  background: transparent;
  border: none;
  cursor: pointer;
}
.faq-icon {
  flex-shrink: 0;
  color: var(--muted);
  display: flex;
  align-items: center;
}
.faq-item .icon-minus { display: none; }
.faq-item .icon-plus { display: block; }
.faq-item.active .icon-minus { display: block; }
.faq-item.active .icon-plus { display: none; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.2s ease;
  padding: 0 1.5rem;
  opacity: 0;
  visibility: hidden;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.5rem;
  opacity: 1;
  visibility: visible;
}
.faq-answer p {
  color: var(--muted);
  line-height: 1.7;
}

/* CTA */
.cta-section {
  padding: 6rem 1.5rem;
  background: var(--bg-muted);
  position: relative;
  overflow: hidden;
}
.cta-dot-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image: radial-gradient(circle, #d4d4d8 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}
.cta-card {
  background: linear-gradient(to bottom right, var(--foreground), #262626);
  color: #fff;
  border-radius: var(--radius-3xl);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(255,255,255,0.1);
}
.cta-glow-1 {
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: rgba(0,212,224,0.2);
  filter: blur(80px);
  border-radius: 50%;
  transform: translate(50%, -50%);
  pointer-events: none;
}
.cta-glow-2 {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 400px;
  height: 400px;
  background: rgba(139,92,246,0.2);
  filter: blur(80px);
  border-radius: 50%;
  transform: translate(-50%, 50%);
  pointer-events: none;
}
.cta-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 540px;
}
.cta-content h2 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.cta-content > p:first-of-type {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 2rem;
}
.cta-buttons { margin-bottom: 0; }
.cta-note {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  margin-top: 1rem;
  font-weight: 500;
}
.cta-urgency {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.cta-mascot {
  display: none;
  position: relative;
  z-index: 10;
  width: 18rem;
}

/* FOOTER */
.footer {
  padding: 3rem 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-brand img {
  height: 32px;
  width: auto;
}
.footer-brand p {
  color: var(--muted);
  margin: 1.5rem 0;
  max-width: 360px;
}
.footer-social {
  display: flex;
  gap: 1rem;
}
.footer-social a {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  box-shadow: var(--shadow-sm);
  transition: color 0.2s;
}
.footer-social a:hover { color: var(--primary); }
.footer-links h4 {
  font-weight: 600;
  margin-bottom: 1rem;
}
.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.footer-links a {
  color: var(--muted);
  font-size: 0.875rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--secondary); }
.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.footer-bottom p {
  font-size: 0.875rem;
  color: var(--muted);
}
.footer-legal {
  display: flex;
  gap: 1.5rem;
}
.footer-legal a {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.2s;
}
.footer-legal a:hover { color: var(--foreground); }

/* BACK TO TOP */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 40;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

/* SCROLL ANIMATIONS */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll[data-animation="fade-in-left"] {
  transform: translateX(-30px);
}
.animate-on-scroll[data-animation="fade-in-right"] {
  transform: translateX(30px);
}
.animate-on-scroll[data-animation="scale-in"] {
  transform: scale(0.9);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* RESPONSIVE */
@media (min-width: 768px) {
  .section-header h2 { font-size: 3rem; }
  .hero-text h1 { font-size: 3.5rem; }
  .hero-buttons { flex-direction: row; }
  .hero-buttons .btn { width: auto; }
  .btn-cta { width: auto; }
  .pain-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(3, 1fr); }
  .cta-card {
    flex-direction: row;
    padding: 4rem;
    align-items: center;
    justify-content: space-between;
  }
  .cta-content { text-align: left; }
  .cta-mascot { display: block; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
  .wave-hero svg { height: 80px; }
  .wave-pain svg, .wave-features svg, .wave-how svg, .wave-top svg { height: 60px; }
  .scroll-indicator { bottom: 6rem; }
}

@media (min-width: 1024px) {
  .navbar-links { display: flex; }
  .navbar-actions { display: flex; }
  .mobile-menu-btn { display: none; }
  .hero-content { grid-template-columns: 1fr 1fr; }
  .hero-text h1 { font-size: 4.5rem; }
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .how-grid { grid-template-columns: 1fr 1fr; }
  .how-mascot { display: flex; }
  .section-header h2 { font-size: 3.25rem; }
  .cta-content h2 { font-size: 3rem; }
  .how-steps h2 { font-size: 3rem; }
  .wave-hero svg { height: 120px; }
  .wave-pain svg, .wave-features svg, .wave-how svg, .wave-top svg { height: 70px; }
}