:root {
  --bg-a: #ebf5ff;
  --bg-b: #ddecff;
  --bg-c: #f6fbff;
  --text-main: #2462c9;
  --text-sub: #6f89b8;
  --line: #cadfff;
  --spin: #2f7df4;
  --btn-a: #18b9f6;
  --btn-b: #2e65ef;
  --ok: #17a64f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at 12% 10%, rgba(114, 178, 255, 0.42) 0 18%, transparent 19%),
    radial-gradient(circle at 86% 14%, rgba(102, 164, 245, 0.3) 0 12%, transparent 13%),
    radial-gradient(circle at 84% 82%, rgba(146, 204, 255, 0.35) 0 14%, transparent 15%),
    linear-gradient(165deg, var(--bg-a) 0%, var(--bg-b) 56%, var(--bg-c) 100%);
  display: grid;
  place-items: center;
}

body::before,
body::after {
  content: "";
  position: fixed;
  border: 1px solid rgba(148, 190, 248, 0.35);
  border-radius: 50%;
  pointer-events: none;
}

body::before {
  width: 88vmax;
  height: 88vmax;
  top: -43vmax;
  left: -20vmax;
}

body::after {
  width: 96vmax;
  height: 96vmax;
  top: -48vmax;
  right: -25vmax;
}

.layout {
  width: min(92vw, 540px);
  margin-top: -4vh;
  text-align: center;
  position: relative;
  z-index: 2;
}

.loading-box {
  width: min(92vw, 420px);
  margin: 0 auto;
  padding: 18px 20px 12px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.52);
  backdrop-filter: blur(3px);
  box-shadow: 0 12px 28px rgba(64, 104, 180, 0.15);
}

.spinner {
  width: 76px;
  height: 76px;
  margin: 0 auto 12px;
  border-radius: 50%;
  border: 6px solid #d4e8ff;
  border-top-color: var(--spin);
  animation: spin 1s linear infinite;
}

.heading {
  margin: 0;
  font-size: 28px;
  letter-spacing: 0.8px;
  font-weight: 800;
  text-transform: uppercase;
}

.sub {
  margin: 7px 0 0;
  font-size: 15px;
  color: var(--text-sub);
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.timer {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-sub);
}

.success-panel {
  margin-top: 22px;
  display: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.success-panel.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.icon-wrap {
  width: 170px;
  height: 170px;
  margin: 0 auto 16px;
  border-radius: 34px;
  position: relative;
  display: grid;
  place-items: center;
  background: linear-gradient(155deg, #5da8ff 0%, #2d63ea 100%);
  box-shadow: 0 18px 32px rgba(43, 95, 189, 0.28);
  transform: rotate(-7deg);
}

.icon-wrap::before {
  content: "";
  position: absolute;
  inset: -8px;
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 30px;
  transform: rotate(7deg);
}

.check {
  color: #ffffff;
  font-size: 82px;
  line-height: 1;
  transform: rotate(7deg);
  text-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.ok-title {
  margin: 0;
  font-size: 38px;
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--ok);
  text-transform: uppercase;
}

.ok-desc {
  margin: 12px 0 24px;
  font-size: 18px;
  font-weight: 700;
  color: #2f69cc;
}

.continue-btn {
  min-width: 300px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  padding: 15px 24px;
  font-size: 34px;
  font-weight: 900;
  letter-spacing: 1px;
  color: #ffffff;
  text-transform: uppercase;
  background: linear-gradient(95deg, var(--btn-a), var(--btn-b));
  box-shadow: 0 10px 24px rgba(26, 112, 227, 0.34);
  cursor: pointer;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 640px) {
  .layout {
    margin-top: 0;
  }

  .heading {
    font-size: 22px;
  }

  .sub {
    font-size: 13px;
  }

  .icon-wrap {
    width: 130px;
    height: 130px;
    border-radius: 24px;
  }

  .check {
    font-size: 62px;
  }

  .ok-title {
    font-size: 26px;
  }

  .ok-desc {
    font-size: 15px;
  }

  .continue-btn {
    min-width: 220px;
    font-size: 24px;
    padding: 12px 18px;
  }
}