* { box-sizing: border-box; }

html, body {
  width: 100%;
  margin: 0;
}

body {
  font-family: serif;
  font-size: 1.6rem;
  line-height: 1.5;
  padding: 1rem;
}

.add-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.add-form input[type="url"] {
  flex: 1;
  font-size: 1.6rem;
  padding: 0.75rem;
  border: 2px solid #000;
  min-width: 0;
}

.add-form button,
.page-btn,
button {
  font-size: 1.6rem;
  padding: 0.75rem 1.25rem;
  border: 2px solid #000;
  background: #fff;
  color: #000;
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
}

.page-btn.disabled {
  opacity: 0.4;
}

.articles {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
}

.articles li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid #999;
}

.articles .article-title {
  flex: 1;
  color: #000;
  text-decoration: none;
  word-break: break-word;
}

.articles .delete {
  font-size: 1.4rem;
  padding: 0.5rem 0.75rem;
  border: 2px solid #000;
  text-decoration: none;
  color: #000;
}

.empty {
  font-style: italic;
  color: #666;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.page-info {
  font-size: 1.4rem;
}

.confirm {
  text-align: center;
}

.confirm .article-title {
  font-weight: bold;
  margin: 1rem 0 2rem 0;
  display: block;
}

.confirm form {
  margin-bottom: 1rem;
}

button.danger {
  border-color: #c00;
  color: #c00;
}

.error p {
  margin-bottom: 1.5rem;
}