:root {
  --primary: #dd5828;
  --dark: #333;
  --light: #f4f4f4;
  --border: #ddd;
  --white: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background: #f9f9f9;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

.hidden { display: none; }

/* Header */
.main-header {
  background: var(--white);
  border-bottom: 2px solid var(--primary);
  padding: 20px 0;
  text-align: center;
}

#site-title a {
  text-decoration: none;
  color: var(--primary);
  font-size: 1.5rem;
  font-weight: bold;
}

/* Posts Grid (3x3) */
.section-header {
  margin: 40px 0 20px;
  text-align: center;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

.post-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s;
}

.post-card:hover { transform: translateY(-5px); box-shadow: 0 5px 15px rgba(0,0,0,0.1); }

.post-thumb {
  width: 100%;
  height: 180px;
  background: #eee;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ccc;
  font-weight: bold;
  object-fit: cover;
}

.post-card h3 {
  padding: 15px;
  font-size: 1rem;
  height: 70px;
  overflow: hidden;
  text-align: center;
  border-top: 1px solid #f0f0f0;
}

/* Detail View */
.back-nav { margin: 20px 0; }
.btn-back {
  color: var(--primary);
  text-decoration: none;
  font-weight: bold;
}

#post-detail-content {
  background: white;
  padding: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

#post-detail-content img { max-width: 100%; height: auto; margin-bottom: 20px; border-radius: 4px; }

/* Admin View */
.file-label { display: block; margin: 10px 0; font-weight: bold; }
#image-preview img { max-width: 200px; margin: 10px 0; border: 1px solid #ddd; }

.editor-area {
  min-height: 300px;
  border: 1px solid var(--border);
  background: white;
  padding: 20px;
  margin: 10px 0;
  border-radius: 4px;
}

.editor-tools { background: #eee; padding: 10px; display: flex; gap: 10px; }
#post-form input[type="text"] { width: 100%; padding: 10px; margin-bottom: 10px; border: 1px solid #ddd; }

.btn-submit { width: 100%; padding: 15px; background: var(--primary); color: white; border: none; font-size: 1.1rem; cursor: pointer; margin-bottom: 10px; }
.btn-cancel { width: 100%; padding: 10px; background: #999; color: white; border: none; cursor: pointer; }

/* Partner Section */
.partner-section { background: #fff; padding: 50px 0; border-top: 1px solid var(--border); text-align: center; }
.partner-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; margin-top: 20px; }
.partner-link {
  background: #fff; padding: 10px 20px; border: 1px solid var(--primary);
  color: var(--primary); text-decoration: none; font-weight: bold; border-radius: 4px; font-size: 0.9rem;
}
.partner-link:hover { background: var(--primary); color: white; }

/* Footer */
.main-footer { text-align: center; padding: 40px 0; border-top: 1px solid var(--border); color: #888; }
.footer-bottom { margin-top: 10px; display: flex; justify-content: center; align-items: center; gap: 20px; }
.btn-admin-small { background: none; border: none; color: #ccc; cursor: pointer; font-size: 0.75rem; }
.btn-admin-small:hover { color: #888; }
.btn-link { background: none; border: none; color: #888; text-decoration: underline; cursor: pointer; font-size: 0.85rem; }

/* Modal */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); }
.modal-content { background: white; margin: 10% auto; padding: 0; width: 90%; max-width: 600px; border-radius: 8px; }
.modal-header { padding: 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-body { padding: 20px; }
.close { cursor: pointer; font-size: 1.5rem; }

@media (max-width: 768px) {
  .posts-grid { grid-template-columns: 1fr; }
}