body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(to bottom, #dff3f3, #f7f7f7);
  color: #333;
}

header {
  text-align: center;
  padding: 40px 20px;
}

h1 {
  font-size: 2.5rem;
  color: #2b5d5d;
}

.tagline {
  font-size: 1.1rem;
  color: #555;
}

.hero {
  display: flex;
  justify-content: center;
  padding: 20px;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 16px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

textarea {
  width: 100%;
  height: 120px;
  margin-top: 10px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #ccc;
}

button {
  margin-top: 10px;
  width: 100%;
  padding: 12px;
  background: #2b5d5d;
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background: #1f4444;
}

.feed {
  padding: 20px;
  max-width: 700px;
  margin: auto;
}

.post {
  background: white;
  padding: 15px;
  margin-bottom: 10px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

footer {
  text-align: center;
  padding: 30px;
  font-size: 0.9rem;
  color: #666;
}

.overlay {
  position: fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background: radial-gradient(circle, rgba(255,255,255,0.6), rgba(220,240,240,0.2));
  pointer-events:none;
}