/* RESET & BASE */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f2f2f2;
  color: #333;
  line-height: 1.6;
}

/* HEADER */
header {
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
  color: white;
  padding: 2.5rem 1rem;
  text-align: center;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1rem;
  color: #ddd;
}

/* MAIN CONTAINER */
main.preview-container,
main#content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 2rem;
  max-width: 1200px;
  margin: auto;
}

/* PREVIEW CARD */
.preview-block {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease;
  cursor: pointer;
}

.preview-block:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

/* IMAGE WRAPPER */
.image-wrapper {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none; /* prevent click interfering */
}

/* TEXT CONTENT */
.preview-block h3 {
  margin: 1rem 1rem 0.5rem;
  font-size: 1.2rem;
  color: #222;
}

.preview-block p {
  margin: 0 1rem 1rem;
  font-size: 0.95rem;
  color: #555;
}

/* 2-line Clamp */
.preview-text {
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
}
.pagination-controls {
  text-align: center;
  margin: 2rem auto;
  font-size: 1rem;
}

.pagination-controls button {
  margin: 0 10px;
  padding: 0.5rem 1rem;
  background: #0077cc;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.pagination-controls button:disabled {
  background: #ccc;
  cursor: not-allowed;
}


/* FOOTER */
footer {
  background: #2c3e50;
  color: #ccc;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.9rem;
  margin-top: 2rem;
}

/* MOBILE RESPONSIVE */
@media (max-width: 600px) {
  .image-wrapper {
    height: 140px;
  }

  header h1 {
    font-size: 1.8rem;
  }
}