/* Modern Design System & Global Styles */
:root {
  /* Color Palette - Deep Space & Vibrant Accents */
  --bg-dark: #02040a;
  --bg-card: rgba(12, 18, 32, 0.65);
  --bg-card-hover: rgba(18, 26, 46, 0.75);

  --primary: #8b5cf6;
  /* Violet 500 */
  --primary-glow: rgba(139, 92, 246, 0.5);
  --accent: #06b6d4;
  /* Cyan 500 */
  --accent-2: #d946ef;
  /* Fuchsia 500 */
  --accent-glow: rgba(6, 182, 212, 0.5);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --border-light: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Plus Jakarta Sans', system-ui, sans-serif;

  /* Spacing & Layout */
  --container-width: 1200px;
  --header-height: 80px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Effects */
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);

  --backdrop-blur: blur(12px);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* Dynamic Background */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 15% 50%, rgba(139, 92, 246, 0.15), transparent 35%),
    radial-gradient(circle at 85% 30%, rgba(6, 182, 212, 0.12), transparent 35%);
  z-index: -2;
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  z-index: -1;
  pointer-events: none;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  color: var(--text-main);
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
  background: linear-gradient(to right, #fff, #e9d5ff);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
}

p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 65ch;
}

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

a:hover {
  color: var(--primary);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(2, 4, 10, 0.8);
  backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(2, 4, 10, 0.95);
  box-shadow: var(--shadow-md);
}

.header-inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text-main);
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.logo span {
  display: none;
  /* Hide text as requested */
}

.logo img {
  height: 48px;
  /* Slightly larger logo since text is gone */
  width: auto;
}

.nav-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-main);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding-top: calc(var(--header-height) + 4rem);
  padding-bottom: 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  min-height: 90vh;
}

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

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-glow);
  animation: float 6s ease-in-out infinite;
}

.hero-visual img {
  width: 100%;
  height: auto;
  display: block;
  transform: scale(1.05);
  transition: transform 0.5s ease;
}

.hero-visual:hover img {
  transform: scale(1.1);
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-20px);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-fast);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent-2));
  color: white;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition-normal);
  backdrop-filter: var(--backdrop-blur);
  position: relative;
  overflow: hidden;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03), transparent);
  transform: translateX(-100%);
  transition: 0.5s;
}

.card:hover::before {
  transform: translateX(100%);
}

/* Features / Grid Items */
.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(6, 182, 212, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

/* Footer */
.site-footer {
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid var(--border-light);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--text-main);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

.copyright {
  text-align: center;
  color: var(--text-dim);
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 968px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-content {
    order: 2;
  }

  .hero-visual {
    order: 1;
    max-width: 500px;
    margin: 0 auto;
  }

  h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--bg-dark);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    transform: translateY(-150%);
    transition: var(--transition-normal);
    z-index: 999;
  }

  .nav-menu.active {
    transform: translateY(0);
    box-shadow: var(--shadow-lg);
  }

  .nav-link {
    font-size: 1.1rem;
    display: block;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mb-1 {
  margin-bottom: 0.5rem;
}

.mb-2 {
  margin-bottom: 1rem;
}

.mb-3 {
  margin-bottom: 1.5rem;
}

.mb-4 {
  margin-bottom: 2rem;
}

.mt-4 {
  margin-top: 2rem;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  border: 1px solid rgba(6, 182, 212, 0.2);
}

/* Breathing Exercise */
.breathing-circle {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary-glow), transparent);
  border: 2px solid var(--primary);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 600;
  color: white;
  box-shadow: 0 0 30px var(--primary-glow);
  transition: all 4s ease-in-out;
}

.breathing-circle.inhale {
  transform: scale(1.3);
  box-shadow: 0 0 50px var(--accent-glow);
  border-color: var(--accent);
}

.breathing-circle.exhale {
  transform: scale(1);
  box-shadow: 0 0 20px var(--primary-glow);
  border-color: var(--primary);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Animations */
.fade-in-section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  will-change: opacity, visibility;
}

.fade-in-section.visible {
  opacity: 1;
  transform: none;
}