@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary-color: #0076f5;
  --secondary-color: #00d2ff;
  --bg-color: #f7f9fc;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a68;
  --surface-color: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.05);
  --card-bg: #ffffff;
  
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow-sm: 0 4px 6px rgba(0,0,0,0.05);
  --shadow-md: 0 10px 20px rgba(0,118,245,0.1);
  --shadow-lg: 0 20px 40px rgba(0,118,245,0.15);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #0b0c10;
    --text-primary: #f8f9fa;
    --text-secondary: #a0aab2;
    --surface-color: rgba(20, 22, 28, 0.85);
    --glass-border: rgba(255, 255, 255, 0.05);
    --card-bg: #15171e;
    --shadow-md: 0 10px 20px rgba(0,0,0,0.5);
    --shadow-lg: 0 20px 40px rgba(0,0,0,0.6);
  }
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--surface-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container img {
  height: 48px;
  width: auto;
  transition: transform 0.3s ease;
}

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

.logo-dark { display: none; }
.logo-light { display: block; }

@media (prefers-color-scheme: dark) {
  .logo-dark { display: block; }
  .logo-light { display: none; }
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
  font-size: 0.95rem;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: width 0.3s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white !important;
  padding: 0.75rem 1.75rem !important;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
}

.btn-primary::after {
  display: none;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: white !important;
}

main {
  margin-top: 80px;
  min-height: calc(100vh - 80px - 300px);
  position: relative;
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 8rem 5% 6rem;
  position: relative;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, var(--primary-color), var(--text-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  max-width: 900px;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

.page-header {
  text-align: center;
  padding: 4rem 5% 2rem;
}

.page-header h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.content-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--card-bg);
  padding: 3rem;
  border-radius: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--glass-border);
  position: relative;
  z-index: 10;
  margin-bottom: 4rem;
}

.content-container h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
  font-size: 1.75rem;
}

.content-container h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.content-container p, .content-container ul {
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

.content-container ul {
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.content-container li {
  margin-bottom: 0.5rem;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--bg-color);
  border-radius: 16px;
  margin-bottom: 1.5rem;
  border: 1px solid var(--glass-border);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.contact-icon {
  font-size: 2.5rem;
}

.contact-info h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.contact-info p, .contact-info a {
  margin: 0;
  color: var(--text-secondary);
  text-decoration: none;
}

.contact-info a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

.footer {
  background: var(--surface-color);
  padding: 4rem 5% 2rem;
  border-top: 1px solid var(--glass-border);
  position: relative;
  z-index: 10;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 3rem;
  margin-bottom: 3rem;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.footer-col {
  flex: 1;
  min-width: 250px;
}

.footer-col h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.footer-col p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 0.75rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.sleep-bg-pattern {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: url('sleep_bg.png');
  background-size: 400px;
  background-repeat: repeat;
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero h1 {
    font-size: 2.5rem;
  }
  .page-header h1 {
    font-size: 2rem;
  }
  .content-container {
    padding: 1.5rem;
    margin: 0 5% 4rem;
  }
  .contact-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}