.smtp-success-dialog {
  box-sizing: border-box;
  width: min(880px, calc(100% - 32px));
  max-height: calc(100% - 32px);
  overflow: auto;
  padding: clamp(20px, 4vw, 36px);
  border: 0;
  border-radius: 12px;
  background: #fff;
  color: #252525;
  font-family: Arial, sans-serif;
  text-align: center;
  box-shadow: 0 16px 64px rgba(0, 0, 0, 0.18);
}

.smtp-success-dialog::backdrop {
  background: rgba(0, 0, 0, 0.42);
}

.smtp-success-check {
  box-sizing: border-box;
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  margin: 0 auto 18px;
  border: 4px solid #cce5b8;
  border-radius: 50%;
}

.smtp-success-check::before {
  content: "";
  width: 44px;
  height: 24px;
  border-bottom: 7px solid #61ae24;
  border-left: 7px solid #61ae24;
  transform: translateY(-4px) rotate(-45deg);
}

.smtp-success-dialog h2 {
  margin: 0 0 10px;
  color: inherit;
  font: 700 clamp(24px, 4vw, 42px)/1.16 Arial, sans-serif;
}

.smtp-success-dialog p {
  margin: 0;
  font: 400 clamp(17px, 2.5vw, 27px)/1.35 Arial, sans-serif;
}

.smtp-success-note {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
  padding: 14px 18px;
  border: 1px solid #edc358;
  border-radius: 10px;
  background: #fff3d5;
  font-size: clamp(15px, 2vw, 22px);
  line-height: 1.4;
  text-align: left;
}

.smtp-success-note[hidden] {
  display: none;
}

.smtp-success-note > span {
  flex: none;
  font-size: 30px;
}

.smtp-success-dialog .smtp-success-ok {
  min-width: 112px;
  margin-top: 20px;
  padding: 12px 24px;
  border: 0;
  border-radius: 8px;
  background: #8ed1ec;
  color: #163847;
  font: 700 19px/1.2 Arial, sans-serif;
  cursor: pointer;
}

.smtp-success-dialog .smtp-success-ok:hover {
  background: #76c4e4;
}

.smtp-success-dialog .smtp-success-ok:focus-visible {
  outline: 2px solid #246481;
  outline-offset: 3px;
}