:root {
  --bg-dark: #090D16;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(24, 33, 53, 0.85);
  --bg-elevated: #161F30;
  --primary-cyan: #00F0FF;
  --primary-lime: #CCFF00;
  --accent-purple: #A855F7;
  --accent-coral: #FF5252;
  --accent-amber: #FFB300;
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-cyan: rgba(0, 240, 255, 0.3);
  --border-lime: rgba(204, 255, 0, 0.3);
  --glow-cyan: 0 0 25px rgba(0, 240, 255, 0.35);
  --glow-lime: 0 0 25px rgba(204, 255, 0, 0.35);
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background Gradients & Glows */
.bg-glow-1 {
  position: absolute;
  top: -10%;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, rgba(0, 0, 0, 0) 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
}

.bg-glow-2 {
  position: absolute;
  top: 35%;
  right: 5%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(204, 255, 0, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
  filter: blur(90px);
  z-index: -1;
  pointer-events: none;
}

.bg-glow-3 {
  position: absolute;
  top: 70%;
  left: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.1) 0%, rgba(0, 0, 0, 0) 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  object-fit: cover;
  border: 1.5px solid var(--primary-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
}

.logo-text {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.logo-text span {
  background: linear-gradient(135deg, var(--primary-cyan), var(--primary-lime));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-cyan);
  border-radius: 2px;
}

.nav-cta {
  background: linear-gradient(135deg, var(--primary-cyan), #00A3FF);
  color: #000;
  font-weight: 800;
  font-size: 13px;
  padding: 10px 20px;
  border-radius: 12px;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 240, 255, 0.45);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
}

/* Mobile Nav Drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: 74px;
  left: 0;
  width: 100%;
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border-color);
  padding: 24px;
  z-index: 999;
}

.mobile-nav.open {
  display: block;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.mobile-nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
}

/* Hero Section */
.hero {
  padding: 80px 24px 60px;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--border-cyan);
  border-radius: 30px;
  font-size: 12px;
  font-weight: 800;
  color: var(--primary-cyan);
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 52px;
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

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

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 540px;
}

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

.btn-primary {
  background: var(--primary-lime);
  color: #000;
  font-weight: 900;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(204, 255, 0, 0.25);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(204, 255, 0, 0.4);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 15px;
  padding: 14px 24px;
  border-radius: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-cyan);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.stat-item h4 {
  font-size: 26px;
  font-weight: 900;
  color: var(--text-primary);
}

.stat-item p {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* App Mockup Component */
.hero-mockup {
  position: relative;
}

.app-frame {
  background: #0D121F;
  border-radius: 36px;
  padding: 20px;
  border: 2px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.7), var(--glow-cyan);
  position: relative;
  overflow: hidden;
}

.mockup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.mockup-phase {
  font-size: 10px;
  font-weight: 900;
  color: var(--primary-cyan);
  background: rgba(0, 240, 255, 0.12);
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.8px;
}

.mockup-vitals {
  display: flex;
  gap: 8px;
  font-size: 11px;
  font-weight: 800;
  color: var(--primary-lime);
}

.mockup-card {
  background: var(--bg-elevated);
  border-radius: 20px;
  padding: 16px;
  margin-bottom: 14px;
  border: 1px solid var(--border-color);
}

.mockup-hero-ex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.mockup-hero-ex h3 {
  font-size: 17px;
  font-weight: 900;
}

.badge-muscle {
  font-size: 10px;
  font-weight: 800;
  background: rgba(255, 82, 82, 0.15);
  color: var(--accent-coral);
  padding: 3px 8px;
  border-radius: 12px;
}

.mockup-coach-bubble {
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.3);
  padding: 12px;
  border-radius: 14px;
  font-size: 12px;
  margin-top: 10px;
  color: #E2E8F0;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.mockup-coach-bubble i {
  color: var(--accent-purple);
  margin-top: 2px;
}

.mockup-live-set {
  background: rgba(0, 240, 255, 0.05);
  border: 1.5px solid var(--border-cyan);
  border-radius: 20px;
  padding: 16px;
  text-align: center;
}

.mockup-set-title {
  font-size: 12px;
  font-weight: 900;
  color: var(--primary-cyan);
  letter-spacing: 0.8px;
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
}

.mockup-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.mockup-metric {
  background: rgba(0, 0, 0, 0.3);
  padding: 10px;
  border-radius: 12px;
}

.mockup-metric span {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 700;
  display: block;
}

.mockup-metric strong {
  font-size: 20px;
  font-weight: 900;
  color: var(--text-primary);
}

.mockup-btn {
  background: var(--primary-cyan);
  color: #000;
  font-weight: 900;
  font-size: 13px;
  padding: 12px;
  border-radius: 12px;
  width: 100%;
  display: block;
  letter-spacing: 0.5px;
}

/* Sections */
.section {
  padding: 100px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  font-size: 12px;
  font-weight: 900;
  color: var(--primary-lime);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  display: inline-block;
  margin-bottom: 12px;
}

.section-title {
  font-size: 40px;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 36px 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-cyan);
  box-shadow: 0 20px 40px -15px rgba(0, 240, 255, 0.15);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 24px;
}

.icon-cyan {
  background: rgba(0, 240, 255, 0.12);
  color: var(--primary-cyan);
  border: 1px solid var(--border-cyan);
}

.icon-lime {
  background: rgba(204, 255, 0, 0.12);
  color: var(--primary-lime);
  border: 1px solid var(--border-lime);
}

.icon-purple {
  background: rgba(168, 85, 247, 0.12);
  color: var(--accent-purple);
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.icon-coral {
  background: rgba(255, 82, 82, 0.12);
  color: var(--accent-coral);
  border: 1px solid rgba(255, 82, 82, 0.3);
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Voice & GenUI Showcase Banner */
.showcase-banner {
  background: linear-gradient(135deg, rgba(22, 31, 48, 0.9), rgba(13, 18, 31, 0.9));
  border: 1.5px solid var(--border-cyan);
  border-radius: 32px;
  padding: 60px 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  margin-top: 40px;
}

.showcase-content h3 {
  font-size: 32px;
  font-weight: 900;
  margin-bottom: 18px;
  line-height: 1.2;
}

.showcase-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 24px 0 32px;
}

.showcase-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: #CBD5E1;
}

.showcase-list li i {
  color: var(--primary-lime);
  font-size: 18px;
}

/* FAQ Accordion */
.faq-grid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 24px;
  cursor: pointer;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 800;
  font-size: 17px;
}

.faq-answer {
  display: none;
  margin-top: 14px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-toggle {
  transform: rotate(180deg);
  color: var(--primary-cyan);
}

/* Contact & Delete Form Styles */
.form-card {
  max-width: 680px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 44px 36px;
  backdrop-filter: blur(20px);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
}

.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.form-control {
  width: 100%;
  background: rgba(13, 18, 31, 0.8);
  border: 1.5px solid var(--border-color);
  border-radius: 14px;
  padding: 14px 18px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
}

textarea.form-control {
  min-height: 130px;
  resize: vertical;
}

.alert-box {
  padding: 16px;
  border-radius: 14px;
  margin-bottom: 24px;
  font-size: 14px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.alert-warning {
  background: rgba(255, 179, 0, 0.12);
  border: 1px solid rgba(255, 179, 0, 0.35);
  color: #FDE68A;
}

.alert-danger {
  background: rgba(255, 82, 82, 0.12);
  border: 1px solid rgba(255, 82, 82, 0.35);
  color: #FECACA;
}

.alert-success {
  background: rgba(204, 255, 0, 0.12);
  border: 1px solid rgba(204, 255, 0, 0.35);
  color: #E2F952;
}

/* Privacy & Legal Content */
.legal-content {
  max-width: 880px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 50px;
  backdrop-filter: blur(20px);
}

.legal-content h2 {
  font-size: 24px;
  font-weight: 800;
  margin: 36px 0 14px;
  color: var(--primary-cyan);
}

.legal-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 24px 0 10px;
  color: var(--text-primary);
}

.legal-content p, .legal-content li {
  font-size: 15px;
  color: #CBD5E1;
  line-height: 1.75;
  margin-bottom: 14px;
}

.legal-content ul {
  padding-left: 24px;
  margin-bottom: 20px;
}

.badge-legal {
  background: rgba(0, 240, 255, 0.12);
  border: 1px solid var(--border-cyan);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 800;
  color: var(--primary-cyan);
  display: inline-block;
  margin-bottom: 20px;
}

/* Footer */
footer {
  background: #060910;
  border-top: 1px solid var(--border-color);
  padding: 70px 24px 40px;
  margin-top: 80px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 16px;
  max-width: 320px;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 28px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* Responsive */
@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-subtitle {
    margin: 0 auto 36px;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-stats {
    justify-content: center;
  }
  .showcase-banner {
    grid-template-columns: 1fr;
  }
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .nav-links, .nav-cta {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 36px;
  }
  .section-title {
    font-size: 30px;
  }
  .footer-container {
    grid-template-columns: 1fr;
  }
  .legal-content, .form-card {
    padding: 28px 20px;
  }
}