* {
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  background:
    radial-gradient(
      1200px circle at 50% 40%,
      rgba(70, 110, 180, 0.25),
      rgba(15, 25, 45, 0.9) 60%
    ),
    linear-gradient(
      135deg,
      #0f172a,
      #1e293b,
      #0b1220
    );

  min-height: 100vh;
  min-height: 100dvh;
  min-height: 100svh;

  margin: 0;
  padding: 16px;

  display: flex;
  justify-content: center;
  align-items: center;
}

@media (min-height: 700px) and (min-width: 480px) {
  body {
    align-items: center;
  }
}

.card {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(2px);
  border-radius: 14px;
  padding: 24px;
  width: 100%;
  max-width: 420px;
  margin: 0 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
}

h2 {
  margin-top: 0;
  text-align: center;
}

textarea {
  width: 100%;
  height: 120px;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #ddd;
  resize: none;
  font-size: 14px;
}

textarea:focus {
  outline: none;
  border-color: #2d749f;
}

button {
  width: 100%;
  margin-top: 12px;
  padding: 12px;
  background: #2d749f;
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 15px;
  cursor: pointer;
}

button:hover {
  background: #2d749f;
}

.link-box {
  margin-top: 16px;
  padding: 12px;
  background: #f6f7ff;
  border-radius: 8px;
  word-break: break-all;
}

.copy {
  margin-top: 8px;
  background: #2d749f;
}

.copy:hover {
  background: #2d749f;
}

.warning {
  text-align: center;
  color: #121618;
}

.secret-box {
  background: #111;
  color: #0f0;
  padding: 16px;
  border-radius: 8px;
  margin-top: 16px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.error {
  color: #d63031;
  text-align: center;
}

#copyStatus {
  margin-top: 8px;
  text-align: center;
  font-size: 14px;
}

.hidden {
  filter: blur(8px);
  user-select: none;
}

.toggle {
  background: #2d749f; 
}

.toggle:hover {
  background: #2d749f;
}

.copy {
  background: #2d749f; 
}

.copy:hover {
  background: #2d749f;
}

.countdown {
  text-align: center;
  margin-top: 10px;
  font-size: 14px;
}

@media (max-width: 480px) {
  body {
    padding: 12px;
  }

  .card {
    padding: 16px;
    border-radius: 12px;
  }

  h2 {
    font-size: 18px;
  }

  textarea {
    height: 100px;
    font-size: 15px;
  }

  button {
    font-size: 16px;
    padding: 14px;
  }

  .secret-box {
    font-size: 14px;
    padding: 12px;
  }
}


.center-logo {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 5;
  pointer-events: none;
}


.center-logo img {
  width: 520px;
  max-width: none;
  height: auto;


  filter:
    drop-shadow(0 0 6px rgba(120,180,255,0.35))
    drop-shadow(0 0 14px rgba(120,180,255,0.25));

 
  animation: contactRandom 18s infinite;
}

@keyframes contactRandom {


  0%, 55% {
    opacity: 1;
    filter:
      drop-shadow(0 0 6px rgba(120,180,255,0.35))
      drop-shadow(0 0 14px rgba(120,180,255,0.25));
  }


  57% {
    opacity: 0.85;
    filter:
      drop-shadow(0 0 3px rgba(120,180,255,0.2));
  }

  58% {
    opacity: 1;
  }


  58.5%, 74% {
    opacity: 1;
  }


  75% {
    opacity: 0.7;
    filter:
      drop-shadow(0 0 2px rgba(120,180,255,0.15));
  }

  76% {
    opacity: 1;
    filter:
      drop-shadow(0 0 8px rgba(120,180,255,0.4))
      drop-shadow(0 0 18px rgba(120,180,255,0.3));
  }


  77% {
    opacity: 0.9;
  }

  78% {
    opacity: 1;
  }

 
  78.5%, 100% {
    opacity: 1;
    filter:
      drop-shadow(0 0 6px rgba(120,180,255,0.35))
      drop-shadow(0 0 14px rgba(120,180,255,0.25));
  }
}


@media (max-width: 480px) {
  .center-logo img {
    width: 280px;
  }
}

.limit-warning {
  margin-top: 6px;
  font-size: 13px;
  color: #d63031;
  text-align: right;
}