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

  font-family: Arial, Helvetica, sans-serif;
}

body {
  background: #0f172a;
  color: white;
  overflow-x: hidden;
}

/* NAVBAR */

header {
  position: fixed;
  top: 0;
  width: 100%;

  display: flex;
  justify-content: space-between;
  align-items: center;

  padding: 18px 40px;

  background: rgba(15, 23, 42, 0.9);

  backdrop-filter: blur(10px);

  border-bottom: 1px solid rgba(255,255,255,0.08);

  z-index: 1000;
}

.logo {
  font-size: 1.3rem;
  font-weight: bold;
  letter-spacing: 1px;
}

nav {
  display: flex;
  gap: 15px;
}

.nav-btn {
  background: transparent;
  color: white;

  border: 1px solid rgba(255,255,255,0.15);

  padding: 10px 18px;

  border-radius: 10px;

  cursor: pointer;

  transition: 0.3s ease;
}

.nav-btn:hover {
  background: #2563eb;
  transform: translateY(-2px);
}

.active {
  background: #2563eb;
}

/* PAGES */

.page {
  display: none;
  padding-top: 100px;
}

.active-page {
  display: block;
}

/* HERO */

.hero {
  min-height: 60vh;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  text-align: center;

  padding: 40px;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.hero p {
  max-width: 700px;
  color: #cbd5e1;
  line-height: 1.7;
  font-size: 1.1rem;
}

/* CONTENT CARDS */

.content-card {
  width: 85%;
  max-width: 1100px;

  margin: 60px auto;

  padding: 40px;

  background: rgba(255,255,255,0.05);

  border: 1px solid rgba(255,255,255,0.08);

  border-radius: 20px;

  backdrop-filter: blur(12px);

  transition: 0.3s ease;
}

.content-card:hover {
  transform: translateY(-5px);

  border-color: rgba(37, 99, 235, 0.5);

  box-shadow: 0 0 25px rgba(37, 99, 235, 0.2);
}

.content-card h2 {
  margin-bottom: 20px;
  font-size: 2rem;
}

.content-card h3 {
  margin-bottom: 15px;
  color: #dbeafe;
}

.content-card p {
  color: #cbd5e1;
  line-height: 1.8;
}

/* INPUTS */

textarea {
  width: 100%;
  min-height: 140px;

  margin-top: 20px;
  margin-bottom: 20px;

  padding: 15px;

  border-radius: 12px;

  border: 1px solid rgba(255,255,255,0.1);

  background: rgba(255,255,255,0.06);

  color: white;

  resize: vertical;

  outline: none;

  transition: 0.3s ease;
}

textarea:focus {
  border-color: #2563eb;
  box-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
}

/* BUTTONS */

.primary-btn {
  background: #2563eb;
  color: white;

  border: none;

  padding: 12px 24px;

  border-radius: 10px;

  cursor: pointer;

  font-size: 1rem;

  transition: 0.3s ease;
}

.primary-btn:hover {
  transform: scale(1.05);

  background: #3b82f6;

  box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

.email-text {
  margin-top: 20px;
  color: #93c5fd;
}

/* SCROLLBAR */

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #0f172a;
}

::-webkit-scrollbar-thumb {
  background: #2563eb;
  border-radius: 10px;
}

/* MOBILE */

@media (max-width: 768px) {

  header {
    flex-direction: column;
    gap: 15px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .content-card {
    width: 92%;
    padding: 25px;
  }

  nav {
    flex-wrap: wrap;
    justify-content: center;
  }
}