.bnh-404 {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
}

.bnh-404-logo img {
  width: 180px;
  height: auto;
  margin-bottom: 40px;
}

.bnh-404-code {
  font-family: 'Changa One', Impact, sans-serif;
  font-size: 130px;
  line-height: 1;
  color: #fff;
  letter-spacing: 4px;
  text-shadow: 0 6px 30px rgba(0, 0, 0, 0.8);
}

.bnh-404-title {
  font-family: 'Changa One', Impact, sans-serif;
  font-size: 44px;
  color: #fff;
  margin: 18px 0 10px;
  letter-spacing: 1px;
}

.bnh-404-text {
  font-family: 'Exo', sans-serif;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 440px;
  margin: 0 0 34px;
}

.bnh-404-btn {
  font-family: 'Oswald', sans-serif;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #fff;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 999px;
  padding: 14px 34px;
  transition: background 0.2s ease, color 0.2s ease;
}

.bnh-404-btn:hover {
  background: #fff;
  color: #000;
}

@media (max-width: 767px) {
  .bnh-404-logo img {
    width: 140px;
    margin-bottom: 30px;
  }

  .bnh-404-code {
    font-size: 90px;
  }

  .bnh-404-title {
    font-size: 30px;
  }

  .bnh-404-text {
    font-size: 16px;
  }
}