*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, sans-serif;
  line-height: 1.5;
  color: #111;
  background: #f8fafc;
}

.hidden {
  display: none !important;
}

.site-header,
.site-footer {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.site-header h1 {
  margin: 0;
  font-size: 1.5rem;
}

.site-header a {
  color: inherit;
  text-decoration: none;
}

.site-header a:hover {
  text-decoration: underline;
}

.muted {
  color: #64748b;
  font-size: 0.9rem;
}

.main,
.auth-panel {
  max-width: 42rem;
  margin: 0 auto;
  padding: 0 1.25rem 2rem;
}

.auth-panel {
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  background: #fff;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.auth-row {
  margin-bottom: 0.75rem;
}

.auth-row label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.auth-row input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 0.375rem;
  font: inherit;
}

.auth-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 1rem;
}

button {
  font: inherit;
  cursor: pointer;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  border: none;
  background: #0f172a;
  color: #fff;
}

button.secondary {
  background: #e2e8f0;
  color: #0f172a;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.user-badge {
  font-size: 0.875rem;
  color: #334155;
}

.card-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  background: #fff;
  overflow: hidden;
}

.card-list li {
  border-bottom: 1px solid #e2e8f0;
}

.card-list li:last-child {
  border-bottom: none;
}

.card-list a {
  display: block;
  padding: 1rem 1.25rem;
  color: inherit;
  text-decoration: none;
}

.card-list a:hover {
  background: #f1f5f9;
}

.card-title {
  font-weight: 600;
  margin: 0;
}

.card-sub {
  margin: 0.25rem 0 0;
  font-size: 0.875rem;
  color: #64748b;
}

.error {
  padding: 1rem;
  border-radius: 0.5rem;
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.article-meta {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748b;
  margin: 0 0 0.5rem;
}

.article-title {
  font-size: 1.75rem;
  margin: 0 0 1rem;
  line-height: 1.2;
}

.article-summary {
  font-size: 1rem;
  color: #334155;
  margin: 0 0 1rem;
}

.article-body {
  white-space: pre-wrap;
  font-size: 1rem;
  color: #1e293b;
  margin-top: 1rem;
}

.back-row {
  margin-bottom: 1rem;
}

.back-row a {
  font-size: 0.9rem;
  color: #0f172a;
}

.grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.article-card {
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  padding: 1rem;
  background: #fff;
}

.article-card h3 {
  margin: 0.5rem 0 0;
  font-size: 1.1rem;
}

.article-card a {
  color: inherit;
  text-decoration: none;
}

.article-card a:hover {
  text-decoration: underline;
}

.article-card p {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  color: #475569;
}

.article-card .article-date {
  margin-top: 0.5rem;
}

.article-card .article-snippet {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  color: #475569;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}