:root {
  color: #0f172a;
  background-color: #f8fafc;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  line-height: 1.5;
}

body {
  margin: 0;
  min-height: 100vh;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

h1 {
  margin-bottom: 4px;
  font-size: 28px;
}

h2 {
  margin-top: 0;
  font-size: 20px;
}

ul {
  padding-left: 20px;
}

li {
  margin-bottom: 8px;
}

.app-header {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.subtitle {
  margin: 0;
  color: #475569;
}

.search-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.search-field input {
  border: 1px solid #cbd5f5;
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 15px;
  background: #fff;
}

.info-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.info-card {
  padding: 16px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
}

.hint {
  background: #e2e8f0;
}

.rubrics-section {
  margin-top: 28px;
  display: grid;
  gap: 16px;
}

.posts-section {
  margin-top: 32px;
  display: grid;
  gap: 16px;
}

.posts-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.state-card {
  padding: 16px;
  border-radius: 12px;
  background: #f1f5f9;
  color: #64748b;
  text-align: center;
}

.rubrics-grid {
  display: grid;
  gap: 16px;
}

.rubric-card {
  padding: 18px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.06);
  display: grid;
  gap: 10px;
}

.rubric-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.rubric-header h3 {
  margin: 0;
  font-size: 18px;
}

.rubric-count {
  color: #64748b;
  font-size: 13px;
}

.rubric-description {
  margin: 0;
  color: #475569;
}

.rubric-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: #e0f2fe;
  color: #0369a1;
  font-size: 12px;
  font-weight: 600;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.pagination-button {
  border: none;
  border-radius: 10px;
  padding: 8px 14px;
  background: #0ea5e9;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}

.pagination-button:disabled {
  background: #cbd5f5;
  cursor: not-allowed;
}

.pagination-info {
  font-size: 14px;
  color: #475569;
}

.posts-grid {
  display: grid;
  gap: 14px;
}

.post-card {
  width: 100%;
  text-align: left;
  border: none;
  border-radius: 16px;
  padding: 16px;
  background: #ffffff;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.06);
  display: grid;
  gap: 8px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.post-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

.post-card h3 {
  margin: 0;
  font-size: 16px;
}

.post-meta {
  font-size: 12px;
  color: #64748b;
  text-transform: capitalize;
}

.post-preview {
  margin: 0;
  color: #475569;
  white-space: pre-line;
}

@media (min-width: 680px) {
  .app-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .search-field {
    min-width: 240px;
  }

  .info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .posts-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}