/* ========== GLOBAL RESET ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

/* ========== PAGE BACKGROUND ========== */
body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;

  background: #0f172a;
  color: #ffffff;
  overflow: hidden;
}

/* Animated gradient glow background */
body::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.4), transparent 40%),
    radial-gradient(circle at bottom right, rgba(124, 58, 237, 0.4), transparent 40%);
  z-index: -1;
  filter: blur(40px);
}

/* ========== MAIN CARD ========== */
.card {
  width: min(90%, 700px);
  padding: 3rem;
  text-align: center;

  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;

  backdrop-filter: blur(14px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* ========== TITLE ========== */
h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 1rem;
  letter-spacing: 1px;
}

/* ========== TEXT ========== */
p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #cbd5e1;
  margin-bottom: 2rem;
}

/* ========== BUTTON ========== */
.button {
  display: inline-block;
  padding: 0.9rem 1.6rem;

  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  text-decoration: none;

  border-radius: 12px;
  font-weight: bold;

  transition: transform 0.2s ease, opacity 0.2s ease;
}

.button:hover {
  transform: translateY(-3px);
  opacity: 0.9;
}

/* ========== SMALL SCREEN FIX ========== */
@media (max-width: 500px) {
  .card {
    padding: 2rem;
  }
}