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

body {
  background: #030407;
  color: white;
  font-family: Arial, Helvetica, sans-serif;
}

.hidden {
  display: none;
}

.password-screen,
.screen {
  min-height: 100vh;
  padding: 25px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at top left, rgba(0,255,160,.28), transparent 35%),
    radial-gradient(circle at top right, rgba(255,0,220,.22), transparent 35%),
    radial-gradient(circle at bottom, rgba(0,140,255,.20), transparent 40%),
    #030407;
}

.screen {
  display: none;
}

.screen.active {
  display: flex;
}

.password-card,
.hero-card,
.main-card {
  width: 100%;
  max-width: 850px;
  padding: 45px 30px;
  text-align: center;
  border-radius: 35px;
  background: rgba(0, 0, 0, .72);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: 0 0 55px rgba(0,255,180,.20);
  backdrop-filter: blur(18px);
}

.wide {
  max-width: 1150px;
}

.logo-text {
  font-size: clamp(42px, 8vw, 88px);
  font-weight: 900;
  letter-spacing: 8px;
  background: linear-gradient(90deg, #00ff99, #00cfff, #ff2bd6, #7c3cff);
  -webkit-background-clip: text;
  color: transparent;
  margin-bottom: 20px;
}

.logo-orb {
  width: 190px;
  height: 190px;
  margin: 0 auto 30px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 90px;
  font-weight: 900;
  background: conic-gradient(#00ff99, #00cfff, #ff2bd6, #7c3cff, #00ff99);
  box-shadow: 0 0 80px rgba(0,255,180,.45);
}

h1 {
  font-size: clamp(34px, 6vw, 70px);
  letter-spacing: 4px;
  margin-bottom: 24px;
}

h2 {
  font-size: 30px;
  margin: 18px 0;
}

p {
  color: #d8e8ff;
  font-size: clamp(18px, 3vw, 23px);
  line-height: 1.6;
  margin-bottom: 28px;
}

input {
  width: 100%;
  max-width: 420px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.08);
  color: white;
  font-size: 20px;
  text-align: center;
  margin-bottom: 18px;
}

button,
.contact-grid a {
  display: block;
  width: 100%;
  max-width: 500px;
  margin: 16px auto;
  padding: 19px;
  border: none;
  border-radius: 22px;
  color: white;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 3px;
  text-decoration: none;
  cursor: pointer;
  background: linear-gradient(90deg, #00ff99, #00cfff, #ff2bd6);
  box-shadow: 0 0 30px rgba(0,255,180,.32);
  transition: .25s;
}

button:hover,
.contact-grid a:hover {
  transform: translateY(-4px);
}

.menu-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 25px;
}

.package-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 35px 0;
}

.package-card {
  padding: 25px;
  border-radius: 28px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.13);
  box-shadow: inset 0 0 30px rgba(255,255,255,.04);
}

.package-card.featured {
  border-color: rgba(0,255,160,.7);
  box-shadow: 0 0 45px rgba(0,255,160,.22);
}

.mockup {
  height: 170px;
  border-radius: 22px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  font-weight: 900;
  letter-spacing: 4px;
  background:
    linear-gradient(135deg, rgba(0,255,160,.35), rgba(0,207,255,.25), rgba(255,43,214,.28)),
    rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 35px 0;
}

.service-grid div {
  padding: 24px;
  border-radius: 22px;
  font-weight: 900;
  font-size: 20px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.13);
}

.back {
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: none;
}

#errorMsg {
  color: #ff4b8b;
  font-weight: bold;
  display: block;
  margin-top: 10px;
}

footer {
  text-align: center;
  padding: 28px;
  color: #9da8c6;
  background: #030407;
  border-top: 1px solid rgba(255,255,255,.08);
}

@media (max-width: 850px) {
  .menu-grid,
  .contact-grid,
  .package-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .password-card,
  .hero-card,
  .main-card {
    padding: 35px 20px;
  }

  button,
  .contact-grid a {
    font-size: 18px;
  }
}