:root {
  --bg-dark: #0b0c10;
  --bg-darker: #060608;
  --bg-card: #14161c;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #39ff14; /* Neon Green */
  --accent-rgb: 57, 255, 20;
  --accent-dim: rgba(var(--accent-rgb), 0.15);
  --accent-glow: rgba(var(--accent-rgb), 0.4);
  --font-family: 'Outfit', sans-serif;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

ul { list-style: none; }
a { text-decoration: none; color: inherit; }

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 90%;
  max-width: 1280px;
  margin: 0 auto;
}

.accent {
  color: var(--accent);
}

.glow-text {
  text-shadow: 0 0 10px var(--accent-glow), 0 0 20px var(--accent-dim);
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-darker);
  box-shadow: 0 0 15px var(--accent-dim);
}

.btn-primary:hover {
  background-color: #32e612;
  box-shadow: 0 0 25px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--text-muted);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-large {
  padding: 1.2rem 3rem;
  font-size: 1.2rem;
}

.btn-pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0.7); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(var(--accent-rgb), 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0); }
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 0;
  z-index: 1000;
  background: transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(6, 6, 8, 0.9);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 1px;
  position: relative;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-main);
  position: absolute;
  transition: var(--transition);
}

.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 9px; }
.menu-toggle span:nth-child(3) { bottom: 0; }

.menu-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-darker);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.77, 0, 0.175, 1);
  visibility: hidden;
}

.mobile-nav.open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-nav a {
  font-size: 2rem;
  font-weight: 900;
  text-transform: uppercase;
}

/* Sections */
.section {
  padding: 8rem 0;
}

.section-title {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 600px;
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(6, 6, 8, 0.9) 0%, rgba(6, 6, 8, 0.6) 50%, rgba(6, 6, 8, 0.3) 100%),
              linear-gradient(to top, var(--bg-dark) 0%, transparent 20%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(4rem, 8vw, 6.5rem);
  margin-bottom: 1.5rem;
  line-height: 0.95;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  margin-bottom: 2.5rem;
  color: var(--text-muted);
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Classes Section */
.classes-section {
  background-color: var(--bg-dark);
}

.section-header {
  margin-bottom: 4rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.card {
  background-color: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-glow);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 20px var(--accent-dim);
}

.card-img-wrapper {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.card-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.card:hover .card-img-wrapper img {
  transform: scale(1.1);
}

.card-overlay {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(to top, var(--bg-card) 0%, transparent 100%);
}

.card-body {
  padding: 2rem;
}

.card-title {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.card-text {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.card-link {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 1px;
}

/* Atmosphere Section */
.atmosphere-section {
  background-color: var(--bg-darker);
}

.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.subheading {
  font-size: 1.8rem;
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

.split-content p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.stat h4 {
  font-size: 2.5rem;
  margin-bottom: 0.2rem;
}

.stat span {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.split-image {
  position: relative;
}

.split-image img {
  border-radius: 4px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.8);
  position: relative;
  z-index: 2;
}

.image-accent-border {
  position: absolute;
  top: 20px;
  right: -20px;
  width: 100%;
  height: 100%;
  border: 3px solid var(--accent);
  border-radius: 4px;
  z-index: 1;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(rgba(11, 12, 16, 0.8), rgba(11, 12, 16, 0.9)), 
              url('assets/gym_dark_interior_1774955300255.png') center/cover fixed;
  padding: 10rem 0;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: radial-gradient(circle at center, transparent 0%, var(--bg-dark) 100%);
}

.cta-section > div {
  position: relative;
  z-index: 2;
}

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

.cta-title {
  font-size: clamp(3rem, 6vw, 5rem);
  margin-bottom: 1rem;
}

.cta-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Footer */
.footer {
  background-color: var(--bg-darker);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 1rem;
  max-width: 300px;
}

.footer-links {
  display: flex;
  gap: 4rem;
}

.link-column h4 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

.link-column a {
  display: block;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
  transition: var(--transition);
}

.link-column a:hover {
  color: var(--accent);
  transform: translateX(5px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Animations Triggered by Scroll */
.animate-on-scroll {
  opacity: 0;
  visibility: hidden;
}

.animate-on-scroll.active {
  opacity: 1;
  visibility: visible;
}

.fade-up {
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-up.active {
  transform: translateY(0);
}

.slide-in-left {
  transform: translateX(-50px);
  transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.slide-in-left.active {
  transform: translateX(0);
}

.slide-in-right {
  transform: translateX(50px);
  transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.slide-in-right.active {
  transform: translateX(0);
}

.scale-in {
  transform: scale(0.9);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scale-in.active {
  transform: scale(1);
}

/* Responsive */
@media (max-width: 900px) {
  .split-layout {
    grid-template-columns: 1fr;
  }
  
  .split-image {
    order: -1;
    margin-bottom: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta {
    display: none;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .section {
    padding: 5rem 0;
  }
  
  .section-title {
    font-size: 2.5rem;
  }
  
  .footer-content {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}