:root {
  --primary-blue: #1e3a8a; 
  --secondary-blue: #3b82f6; 
  --vibrant-orange: #f97316; 
  --vibrant-yellow: #eab308; 
  --neutral-gray: #6b7280; 
  --subtle-green: #10b981; 
  --dark-gray: #374151; 
  --light-bg: #f9fafb; 
  --white: #ffffff;
  --black: #000000;

  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Roboto', sans-serif;

  --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-strong: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --border-radius: 8px;
  --border-radius-large: 16px;

  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  opacity: 1 !important;
  visibility: visible !important;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary-blue);
}

a {
  color: var(--secondary-blue);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--vibrant-orange);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

[data-aos] { opacity: 1 !important; }
.menu-item, .card, .content-block { display: block !important; opacity: 1 !important; }

.text-primary { color: var(--primary-blue); }
.text-secondary { color: var(--secondary-blue); }
.text-accent { color: var(--vibrant-orange); }
.text-success { color: var(--subtle-green); }
.text-muted { color: var(--neutral-gray); }

.font-heading { font-family: var(--font-heading); }
.font-body { font-family: var(--font-body); }

.btn {
  border-radius: var(--border-radius);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: var(--transition-medium);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
  color: var(--white);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--secondary-blue), var(--primary-blue));
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-accent {
  background: linear-gradient(135deg, var(--vibrant-orange), var(--vibrant-yellow));
  color: var(--white);
}

.btn-accent:hover {
  background: linear-gradient(135deg, var(--vibrant-yellow), var(--vibrant-orange));
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-blue);
  color: var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--white);
}

.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--primary-blue);
}

.navbar-nav .nav-link {
  font-weight: 600;
  color: var(--dark-gray);
  transition: var(--transition-fast);
}

.navbar-nav .nav-link:hover {
  color: var(--vibrant-orange);
}

.hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  color: var(--white);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 900;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero .btn {
  font-size: 1.1rem;
  padding: 12px 30px;
}

.card {
  border: none;
  border-radius: var(--border-radius-large);
  box-shadow: var(--shadow-soft);
  transition: var(--transition-medium);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.card-header {
  background: linear-gradient(135deg, var(--vibrant-orange), var(--vibrant-yellow));
  color: var(--white);
  border-bottom: none;
  padding: 1.5rem;
}

.card-body {
  padding: 2rem;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.section {
  padding: 80px 0;
}

.section-bg {
  background: var(--light-bg);
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--vibrant-orange), var(--vibrant-yellow));
  border-radius: 2px;
}

.form-control {
  border-radius: var(--border-radius);
  border: 2px solid #e5e7eb;
  padding: 12px 16px;
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--secondary-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.progress {
  height: 8px;
  border-radius: 4px;
  background: #e5e7eb;
  overflow: hidden;
}

.progress-bar {
  background: linear-gradient(90deg, var(--subtle-green), var(--vibrant-orange));
  transition: width 0.6s ease;
}

.badge {
  border-radius: 20px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-primary {
  background: var(--primary-blue);
}

.badge-accent {
  background: var(--vibrant-orange);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

.animate-pulse { animation: pulse 2s infinite; }
.animate-bounce { animation: bounce 1s infinite; }

.shape {
  position: absolute;
  opacity: 0.1;
  z-index: -1;
}

.shape-circle {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--vibrant-orange);
}

.shape-triangle {
  width: 0;
  height: 0;
  border-left: 100px solid transparent;
  border-right: 100px solid transparent;
  border-bottom: 173px solid var(--subtle-green);
}

.shape-square {
  width: 150px;
  height: 150px;
  background: var(--secondary-blue);
  transform: rotate(45deg);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .card-body {
    padding: 1.5rem;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.focus-visible:focus {
  outline: 2px solid var(--secondary-blue);
  outline-offset: 2px;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--neutral-gray);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--dark-gray);
}

.glass {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.hover-lift:hover {
  transform: translateY(-3px);
  transition: var(--transition-medium);
}

.hover-scale:hover {
  transform: scale(1.05);
  transition: var(--transition-medium);
}

.workout-card {
  background: linear-gradient(135deg, var(--white), var(--light-bg));
  border-left: 5px solid var(--vibrant-orange);
}

.meal-card {
  background: linear-gradient(135deg, var(--white), var(--light-bg));
  border-left: 5px solid var(--subtle-green);
}

.challenge-card {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
  color: var(--white);
}

.progress-tracker {
  background: var(--white);
  border-radius: var(--border-radius-large);
  padding: 2rem;
  box-shadow: var(--shadow-medium);
}

.leaderboard {
  background: var(--white);
  border-radius: var(--border-radius-large);
  overflow: hidden;
}

.leaderboard-item {
  padding: 1rem;
  border-bottom: 1px solid #e5e7eb;
  transition: var(--transition-fast);
}

.leaderboard-item:hover {
  background: var(--light-bg);
}

.leaderboard-item.top {
  background: linear-gradient(90deg, var(--vibrant-yellow), var(--vibrant-orange));
  color: var(--white);
}

.footer {
  background: var(--dark-gray);
  color: var(--white);
  padding: 40px 0;
}

.footer a {
  color: var(--neutral-gray);
}

.footer a:hover {
  color: var(--vibrant-orange);
}