* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

body {
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
  background: radial-gradient(circle at top, #1e1f29 0%, #0f0f14 70%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.card {
  background: #191a23;
  border: 1px solid #2a2b38;
  border-radius: 16px;
  padding: 48px 40px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.logo {
  font-size: 48px;
  margin-bottom: 16px;
}

h1 {
  color: #f2f2f5;
  font-size: 24px;
  margin-bottom: 12px;
}

.subtitle {
  color: #9a9bab;
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 32px;
}

.verify-btn {
  display: inline-block;
  background: #5865f2;
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  padding: 14px 36px;
  border-radius: 10px;
  transition: background 0.2s ease, transform 0.2s ease;
  cursor: pointer;
}

.verify-btn:hover {
  background: #4752c4;
  transform: translateY(-1px);
}

.footer-note {
  color: #6b6c7c;
  font-size: 13px;
  margin-top: 24px;
}

.error-box {
  background: rgba(237, 66, 69, 0.12);
  border: 1px solid rgba(237, 66, 69, 0.4);
  color: #ff8b8f;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 24px;
}

.success .logo {
  font-size: 56px;
}

::selection {
  background: transparent;
}

::-moz-selection {
  background: transparent;
}