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

/* Body base */
body {
  font-family: 'Inter', sans-serif;
  background: #0a0e1a;
  color: #e8edf5;
  overflow-x: hidden;
  line-height: 1.7;
  font-size: 1.08rem;
}

/* Links */
a {
  color: #2de1fc;
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover,
a:focus {
  color: #43f7b7;
  outline: none;
}

/* Header */
header {
  position: sticky;
  top: 0;
  background-color: #0a0e1a;
  border-bottom: 2px solid #e74c3c;
  padding: 24px 40px;
  z-index: 9999;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

#header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#logo {
  font-size: 1.9rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: #e74c3c;
  user-select: none;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
  align-items: center;
  margin: 0;
  padding: 0;
}

nav ul li a {
  font-weight: 600;
  font-size: 1.05rem;
  padding: 10px 14px;
  border-radius: 7px;
  color: #bec6d1;
  display: block;
  transition: all 0.3s ease;
}

nav ul li a:hover,
nav ul li a:focus,
nav ul li a.active {
  background: #e74c3c;
  color: #0a0e1a;
  outline: none;
}

/* Footer */
footer {
  background: #a6f2f7;
  border-top: 2px solid #e74c3c;
  padding: 60px 40px 30px;
  color: #778da5;
  font-weight: 600;
  font-size: 15px;
  user-select: none;
}
.footer-content {
  max-width: 1200px;
  margin: 0 auto 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 45px;
}
.footer-col h3 {
  font-size: 1.3rem;
  margin-bottom: 18px;
  color: #2de1fc;
  font-weight: 700;
  letter-spacing: 0.07em;
}
.footer-col ul {
  list-style: none;
  padding: 0;
}
.footer-col li {
  margin-bottom: 12px;
}
.footer-col a {
  color: #6f86b9;
  font-weight: 500;
  transition: color 0.3s ease;
}
.footer-col a:hover {
  color: #12affc;
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid #123970;
  padding-top: 20px;
  letter-spacing: 0.04em;
  user-select: text;
  font-size: 14px;
}

/* Hero Section */
.hero {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: linear-gradient(135deg, #a6f2f7 0%, #1a1f35 100%);
  position: relative;
  padding: 80px 5vw;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(circle at 30% 20%, rgba(45,225,252,0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, rgba(67,247,183,0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #2de1fc 0%, #43f7b7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
}
.hero p {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: #a8b5cc;
  max-width: 700px;
  line-height: 1.6;
  font-weight: 300;
  position: relative;
  z-index: 1;
}

/* Animations Example */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translate3d(0, 40px, 0);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Utility Classes */
.fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}