html {
  scroll-behavior: smooth;
}

section[id] {
  scroll-margin-top: 90px;
}

.grad {
  background: linear-gradient(90deg, #6C79FF, #4FD6E8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 110px 20px 80px;
  box-sizing: border-box;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 220px;
  background: linear-gradient(to bottom, rgba(15, 17, 23, 0), var(--bg-primary));
  pointer-events: none;
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(142, 0, 138, 1) 0%, rgba(11, 31, 91, 1) 100%);
  filter: blur(100px);
}

.bubble {
  position: absolute;
  left: var(--x);
  bottom: -120px;
  width: var(--s);
  height: var(--s);
  border-radius: 50%;
  background: var(--c);
  opacity: 0;
  animation: bubbleRise var(--d) linear var(--delay) infinite;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 140px;
  width: 100%;
  max-width: 1200px;
}

.hero-visual {
  flex: none;
}

.hero-logo {
  display: block;
  height: 300px;
  width: auto;
  opacity: 0;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.35));
  animation: heroFade 1.6s ease forwards 0.3s, logoFloat 6s ease-in-out 2s infinite;
}

/* Hero */
.hero-text {
  max-width: 520px;
}

.hero-eyebrow,
.hero-title,
.hero-thesis,
.hero-subtitle,
.hero-buttons {
  opacity: 0;
  animation: heroRise 1s cubic-bezier(.2, .7, .2, 1) forwards;
}

.hero-eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(108, 121, 255, 0.14);
  border: 1px solid rgba(108, 121, 255, 0.45);
  color: #B9C0FF;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation-delay: 0.3s;
}

.hero-title {
  margin: 0 0 12px;
  font-size: 64px;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #ffffff;
  animation-delay: 0.45s;
}

.hero-thesis {
  margin: 0 0 18px;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  animation-delay: 0.6s;
}

.hero-subtitle {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-muted);
  animation-delay: 0.75s;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  animation-delay: 0.9s;
}

/* Why TGBot Global */
.features-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px 40px;
}

.features-group {
  margin: 0 0 22px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.features-group + .features-cards {
  margin-bottom: 56px;
}

.features-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 26px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(108, 121, 255, 0.4);
  box-shadow: var(--shadow-hover);
}

.feature-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 16px;
  border-radius: 15px;
  background: linear-gradient(150deg, var(--c1), var(--c2));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 600;
  color: #ffffff;
}

.feature-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-muted);
}

/* Feature overview */
.features-details {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px 20px;
}

.feature-detail {
  display: flex;
  align-items: center;
  gap: 64px;
  margin-bottom: 110px;
}

.feature-detail.alt {
  flex-direction: row-reverse;
}

.detail-media {
  flex: 1.15;
  min-width: 0;
}

.browser {
  border-radius: 16px;
  overflow: hidden;
  background: #0B0D1A;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.08), 0 0 90px rgba(88, 101, 242, 0.18);
}

.browser-bar {
  height: 30px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding-left: 14px;
  background: #14172B;
}

.browser-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3A3F66;
}

.browser img {
  display: block;
  width: 100%;
  height: auto;
}

.detail-content {
  flex: 1;
}

.detail-kicker {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8D98FF;
}

.detail-content h3 {
  margin: 0 0 14px;
  font-size: 34px;
  font-weight: 800;
  line-height: 1.15;
  color: #ffffff;
}

.detail-content p {
  margin: 0 0 18px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-muted);
}

.detail-content ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.detail-content li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-dim);
}

.detail-content li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #8D98FF;
}

/* Testimonials */
.testimonials-section {
  padding: 80px 20px;
  color: var(--text-dim);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
  margin: 0 auto;
  padding: 0 128px;
}

.testimonial-card {
  background-color: var(--bg-secondary);
  position: relative;
  padding: 24px 32px 24px 56px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.testimonial-card::before {
  content: "\201C";
  font-family: serif;
  font-size: 2.5rem;
  color: rgba(255,255,255,0.05);
  position: absolute;
  top: 8px;
  left: 12px;
  z-index: 0;
}

.testimonial-text {
  position: relative;
  z-index: 1;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.95em;
  font-weight: 400;
  color: #f5f5f5;
  margin: 0 0 16px;
  line-height: 1.4;
  text-align: left;
}

.testimonial-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #ff9f1c;
}

.testimonial-initial {
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  background: linear-gradient(135deg, #6C79FF, #4FD6E8);
  font-weight: 800;
  font-size: 20px;
  color: #ffffff;
}

.testimonial-name {
  display: block;
  font-size: 0.9em;
  font-weight: 600;
  color: #ffffff;
}

.testimonial-role {
  display: block;
  font-size: 0.8em;
  color: var(--text-muted);
}

/* Call to action */
.cta-section {
  padding: 100px 20px;
  text-align: center;
  background: linear-gradient(to bottom, var(--bg-primary) 0%, #1b1f2b 60%, var(--bg-card) 100%);
  color: #f1f1f1;
}

.cta-section .hero-btn {
  display: inline-flex;
  align-items: center;
  background-color: var(--accent-discord);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition);
}

.cta-section .hero-btn:hover {
  background-color: #4752c4;
}

.cta-section .btn-icon {
  width: 20px;
  height: 20px;
  margin-right: 10px;
}

/* Animations */
@keyframes heroRise {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroFade {
  from { opacity: 0; transform: scale(0.94); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes bubbleRise {
  0% { transform: translate(0, 0); opacity: 0; }
  20% { opacity: 1; }
  50% { transform: translate(var(--sway), -55vh); }
  80% { opacity: 1; }
  100% { transform: translate(0, -115vh); opacity: 0; }
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@media (prefers-reduced-motion: reduce) {
  .bubble { animation: none; }
  .hero-logo { animation: none; opacity: 1; }
}

/* Responsive */
@media (max-width: 1100px) {
  .hero-inner { gap: 50px; }
  .features-cards { grid-template-columns: repeat(2, 1fr); }
  .feature-detail, .feature-detail.alt { flex-direction: column; gap: 32px; margin-bottom: 80px; }
  .detail-media { width: 100%; }
}

@media (max-width: 900px) {
  .hero-inner { flex-direction: column; text-align: center; }
  .hero-text { max-width: 600px; }
  .hero-buttons { justify-content: center; }
  .hero-logo { height: 200px; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 44px; }
  .hero-thesis { font-size: 20px; }
  .features-cards { grid-template-columns: 1fr; }
  .detail-content h3 { font-size: 26px; }
}

@media (max-width: 1024px) {
  .testimonials-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    padding: 0 12px;
  }
}

@media (max-width: 768px) {
  .testimonials-section {
    padding: 40px 16px;
  }

  .testimonials-section .section-title {
    font-size: 2em;
    margin-bottom: 24px;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .testimonial-card {
    padding: 16px 20px 16px 48px;
    margin-top: 60px;
  }

  .testimonial-text {
    font-size: 0.9em;
    margin-bottom: 12px;
  }

  .testimonial-avatar {
    width: 40px;
    height: 40px;
  }
}