/* Apple‑style soft gradient background */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

body {
  margin: 0;
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #0f1c2e, #1d3a5a, #2f5f88, #3f7aa3);
  background-size: 300% 300%;
  animation: gradientShift 22s ease infinite;
  color: #ffffff;
  -webkit-font-smoothing: antialiased;
}

/* Apple‑style text clarity */
h1, h2, h3, h4, p, a {
  text-shadow:
    0 1px 2px rgba(0,0,0,0.35);
}

/* NAVIGATION – Apple minimalism */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 0.75rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(15, 25, 40, 0.35);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  z-index: 1000;
  box-sizing: border-box;
}

nav .logo img {
  height: 42px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.4));
}

nav .nav-links {
  display: flex;
  gap: 1.75rem;
}

nav .nav-links a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

nav .nav-links a:hover {
  opacity: 0.6;
}

/* SECTION – Apple vertical rhythm */
section {
  min-height: 100vh;
  padding: 8rem 2rem 4rem;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  box-sizing: border-box;
}

/* Apple‑style glass panel */
.container {
  max-width: 900px;
  width: 100%;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(30px);
  border-radius: 24px;
  padding: 4rem 3rem;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow:
    0 20px 40px rgba(0,0,0,0.25),
    0 1px 3px rgba(255,255,255,0.1) inset;
}

/* TYPOGRAPHY – Apple hierarchy */
h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 2.1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.3px;
}

p {
  line-height: 1.7;
  font-size: 1.1rem;
  opacity: 0.95;
}

/* HERO LOGO – Apple presentation style */
.hero-logo {
  width: 240px;
  max-width: 90%;
  margin-bottom: 2rem;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.45));
  opacity: 0.95;
}