/* ==========================================================================
   Library, Search, Glossary & Interactive Browser Tools
   ========================================================================== */

/* Tool Panels & Inputs */
.tool-panel,
.library-tools {
  border: 1px solid var(--line);
  border-radius: var(--radius-m, 14px);
  background: var(--surface);
  padding: clamp(18px, 3vw, 28px);
  margin-block: 1.25rem;
  box-shadow: var(--card-shadow);
}

.tool-panel label {
  display: block;
  font: 700 1rem var(--font-text);
  margin-bottom: 8px;
  color: var(--ink);
}

.tool-input {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s, 8px);
  background: var(--bg);
  color: var(--ink);
  font: 500 0.95rem var(--font-text);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.tool-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  outline: none;
}

.tool-muted {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
  margin-top: 8px;
}

[data-search-status] {
  margin-block: 14px;
}

/* Reading Library Tabs & View */
.library-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-block: 1.25rem;
}

.library-tab {
  min-height: 42px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font: 600 0.92rem var(--font-text);
  cursor: pointer;
  transition: all 0.15s ease;
}

.library-tab:hover {
  background: var(--surface-2);
  border-color: var(--line-strong);
}

.library-tab.is-active,
.library-tab[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink, #ffffff);
}

.library-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.library-list {
  display: grid;
  gap: 14px;
  margin-top: 1rem;
}

.library-list:empty::after {
  content: "Your saved articles and reading history will appear here.";
  display: block;
  border: 1px dashed var(--line);
  border-radius: var(--radius-m, 14px);
  padding: 36px 20px;
  color: var(--muted);
  text-align: center;
  background: var(--surface);
  font-size: 0.95rem;
}

.library-item {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-m, 14px);
  padding: 20px 24px;
  box-shadow: var(--card-shadow);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.library-item:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--card-hover-shadow);
}

.library-item h2 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.library-item h2 a {
  color: var(--ink);
  text-decoration: none;
}

.library-item h2 a:hover {
  color: var(--accent-text);
  text-decoration: underline;
}

.library-item p {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.6;
  margin-bottom: 12px;
}

.library-item .button-quiet {
  margin-top: 4px;
  cursor: pointer;
}

/* Developer & Startup Glossary */
.glossary-tools {
  margin-bottom: 2rem;
}

.glossary-list {
  margin: 1.5rem 0 3rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.glossary-item {
  padding: 20px 22px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-m, 12px);
  box-shadow: var(--card-shadow);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.glossary-item:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.glossary-item dt {
  font: 700 1.08rem/1.3 var(--font-text);
  color: var(--ink);
  margin-bottom: 8px;
}

.glossary-item dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

.glossary-item[hidden] {
  display: none !important;
}

@media (max-width: 768px) {
  .tool-panel,
  .library-tools {
    padding: 14px 16px;
    margin-block: 1rem;
    border-radius: 12px;
  }
  .tool-input {
    min-height: 42px;
    padding: 10px 12px;
    font-size: 0.9rem;
  }
  .library-tabs {
    margin-block: 1rem;
    gap: 6px;
  }
  .library-tab {
    min-height: 36px;
    padding: 6px 14px;
    font-size: 0.84rem;
  }
  .library-item {
    padding: 14px 16px;
    border-radius: 12px;
  }
  .library-item h2 {
    font-size: 1.15rem;
    margin-bottom: 6px;
  }
  .library-item p {
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 10px;
  }
  .glossary-list {
    grid-template-columns: minmax(0, 1fr);
    margin: 1rem 0 2rem;
    gap: 10px;
  }
  .glossary-item {
    padding: 14px 16px;
    border-radius: 12px;
  }
  .glossary-item dt {
    font-size: 1rem;
    margin-bottom: 4px;
  }
  .glossary-item dd {
    font-size: 0.88rem;
    line-height: 1.5;
  }
  .library-tools {
    align-items: flex-start;
  }
}