* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}

html, body {
  width: 100%;
  height: 100%;
  background: #05070e;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  min-height: 100vh;
  position: relative;
  background: radial-gradient(circle at top, #0d2a4f 0%, #05070e 60%, #02040a 100%);
}

/* animated grid background */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 75px 75px;
  opacity: 0.25;
  mask-image: radial-gradient(circle at center, black 40%, transparent 75%);
  animation: gridMove 8s linear infinite;
  pointer-events: none;
}

@keyframes gridMove {
  from { transform: translateY(0px); }
  to { transform: translateY(75px); }
}

/* glow blobs */
.glow {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  filter: blur(130px);
  pointer-events: none;
  opacity: 0.9;
}

.glow-top {
  top: -320px;
  left: -320px;
  background: radial-gradient(circle, rgba(0, 170, 255, 0.35), transparent 70%);
}

.glow-bottom {
  bottom: -340px;
  right: -340px;
  background: radial-gradient(circle, rgba(0, 110, 255, 0.25), transparent 70%);
}

/* main card */
.card {
  z-index: 5;
  text-align: center;
  width: 92%;
  max-width: 750px;
  padding: 60px 60px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(18px);
  box-shadow: 0 0 70px rgba(0, 140, 255, 0.14);
}

/* title */
.title {
  font-size: clamp(52px, 6vw, 95px);
  font-weight: 900;
  letter-spacing: -2px;
  margin-bottom: 18px;
  background: linear-gradient(90deg, #00c3ff, #0077ff, #6a5cff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 50px rgba(0, 140, 255, 0.2);
}

/* subtitle */
.subtitle {
  font-size: clamp(14px, 1.6vw, 18px);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  margin-bottom: 45px;
}

/* button layout */
.buttons {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

/* base button */
.btn {
  width: 210px;
  height: 56px;
  border-radius: 16px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.35s ease;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* shine effect */
.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -65%;
  width: 60%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-25deg);
  transition: left 0.6s ease;
}

.btn:hover::before {
  left: 130%;
}

.btn:hover {
  transform: scale(1.06);
}

/* primary button */
.btn-primary {
  background: linear-gradient(90deg, #00b7ff, #0077ff);
  color: #0b0e16;
  box-shadow: 0 0 20px rgba(0, 119, 255, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 0 35px rgba(0, 119, 255, 0.75),
              0 0 90px rgba(0, 119, 255, 0.35);
}

/* secondary button */
.btn-secondary {
  background: rgba(10, 10, 10, 0.75);
  color: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
}

.btn-secondary:hover {
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.9),
              0 0 80px rgba(0, 0, 0, 0.45);
}

/* entrance animation */
.animate {
  opacity: 0;
  transform: translateY(45px);
  filter: blur(10px);
  animation: popIn 0.65s ease forwards;
}

@keyframes popIn {
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}