* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;

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

  background: linear-gradient(135deg, #0f172a, #1e293b, #334155);

  padding: 20px;
}

.container {
  width: 90%;
  max-width: 900px;

  display: flex;
  flex-direction: column;

  justify-content: center;
  align-items: center;

  gap: 25px;
}

.container h1 {
  font-size: 3rem;
  color: white;
  text-align: center;
}

.author {
  color: #cbd5e1;
  font-size: 18px;
  letter-spacing: 1px;
}

.card {
  width: 100%;

  background: rgba(255, 255, 255, 0.08);

  backdrop-filter: blur(12px);

  border: 1px solid rgba(255, 255, 255, 0.15);

  border-radius: 25px;

  padding: 30px;

  text-align: center;

  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card h2 {
  color: white;
  margin-bottom: 20px;
}

button {
  background: #38bdf8;

  color: white;

  border: none;

  padding: 12px 25px;

  border-radius: 12px;

  cursor: pointer;

  font-size: 16px;

  font-weight: bold;

  transition: 0.3s;
}

button:hover {
  background: #0ea5e9;

  transform: translateY(-4px);
}

.btn-group {
  display: flex;
  justify-content: center;
  gap: 15px;

  margin-top: 10px;
}

.clear-btn {
  background: #ef4444;
}

.clear-btn:hover {
  background: #dc2626;
}

.message {
  color: #cbd5e1;
}

#user {
  margin-bottom: 20px;
}

#user img {
  width: 130px;

  border-radius: 50%;

  border: 4px solid #38bdf8;

  margin-bottom: 15px;
}

#user h3 {
  color: white;
  margin-bottom: 10px;
}

#user p {
  color: #cbd5e1;
  margin-bottom: 5px;
}

#postContainer {
  margin-top: 20px;

  max-height: 350px;

  overflow-y: auto;
}

.post {
  background: rgba(255, 255, 255, 0.08);

  border-left: 5px solid #38bdf8;

  padding: 15px;

  border-radius: 12px;

  margin-bottom: 15px;

  text-align: left;
}

.post h3 {
  color: #38bdf8;

  margin-bottom: 10px;

  text-transform: capitalize;
}

.post p {
  color: #e2e8f0;
}

@media (max-width: 768px) {
  .container h1 {
    font-size: 2rem;
  }

  .card {
    padding: 20px;
  }

  .btn-group {
    flex-direction: column;
  }
}