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

body {
  font-family: Arial, sans-serif;
  margin: 0;
  line-height: 1.3;
}

a:link {
  color: #447799;
}

p {
  margin: 0.5rem 0;
}

.small {
    font-size: 0.9rem;
}

.container {
  width: min(100% - 2rem, 960px);
  margin-inline: auto;
}

/* Header */

.title-bar {
  background-color: #447799;
  color: white;
}

.title-bar-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-block: 1rem;
}

.site-logo {
  width: 50px;
  height: 50px;
  flex: 0 0 auto;
  background-color: white;
  border-radius: 5px;
  object-fit: contain;
}

.title-bar h1 {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 2rem);
  line-height: 1.1;
}

h2 {
  font-size: 1.5rem;
  margin: 0.6rem 0;
}

h3 {
  font-size: 1.3rem;
  margin: 0.6rem 0;
}

h4 {
  font-size: 1.1rem;
  margin: 0.35rem 0;
}

/* Navigation */

.site-nav {
  background-color: #dedede;
  color: #000000;
}

.site-nav > nav {
  border-top: 1px solid #c2c2c2;
}

.site-nav-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.site-nav-toggle::-webkit-details-marker {
  display: none;
}

.site-nav-toggle::after {
  content: "+";
  font-size: 1.1rem;
  line-height: 1;
}

.site-nav[open] .site-nav-toggle::after {
  content: "-";
}

.site-nav .site-nav-inner {
  display: none;
  flex-direction: column;
  gap: 0;
  padding-block: 0.5rem;
}

.site-nav[open] .site-nav-inner {
  display: flex;
}

.site-nav a {
  text-decoration: none;
  padding: 0.65rem 0;
}

@media (min-width: 640px) {
  .site-nav > nav {
    border-top: 0;
  }

  .site-nav-toggle {
    display: none;
  }

  .site-nav .site-nav-inner {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    padding-block: 0.5rem;
  }

  .site-nav a {
    padding: 0;
  }
}

/* Main content */

main {
  padding: 1rem 0;
}

.citation-page {
  display: grid;
  gap: 1.5rem;
  min-width: 0;
}

.citation-page a:link {
  color: #447799;
}

.citation-page a {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.citation-page > * {
  min-width: 0;
}

.app-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

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

@media (min-width: 900px) {
  .app-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.app-card {
  display: flex;
  flex-direction: column;
  border: 1px solid #c9d4dc;
  border-radius: 10px;
  padding: 1rem;
  background-color: #f7fafc;
}

.app-card h3 {
  margin-top: 0;
}

.app-link {
  display: inline-block;
  margin-top: auto;
  margin-left: auto;
  padding-top: 0.75rem;
}

.collapsible-panel {
  padding: 0;
}

.collapsible-panel[open] {
  padding-bottom: 1rem;
}

.collapsible-summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.collapsible-summary::-webkit-details-marker {
  display: none;
}

.collapsible-summary h3 {
  margin: 0;
}

.toggle-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1rem;
  height: 1.1rem;
  border: 1px solid #447799;
  border-radius: 2px;
  background-color: #ffffff;
  color: #447799;
  font-size: 0.95rem;
  line-height: 1;
  flex: 0 0 auto;
  margin-left: auto;
}

.toggle-box::before {
  content: "+";
}

.collapsible-panel[open] .toggle-box::before {
  content: "-";
}

.collapsible-content {
  padding: 0 1rem;
}

.flash {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid #d9b0b0;
  border-radius: 8px;
  background-color: #fff2f2;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

button,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.65rem 1rem;
  border: 1px solid #447799;
  border-radius: 8px;
  background-color: #447799;
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
}

button:hover,
.button-link:hover {
  background-color: #345f7c;
}

input[type="text"],
input[type="file"],
select,
textarea {
  width: 100%;
  max-width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid #b7c6cf;
  border-radius: 8px;
  font: inherit;
  background-color: #ffffff;
}

fieldset {
  min-width: 0;
  margin: 0;
  padding: 0.85rem 1rem 1rem;
  border: 1px solid #c9d4dc;
  border-radius: 8px;
}

legend {
  padding: 0 0.35rem;
}

label {
  display: block;
}

.site-footer {
  background-color: #1b2f52;
  color: #ffffff;
  margin-top: 2rem;
}

.site-footer-inner {
  padding: 1.25rem 0;
}

.keyword-finder-page {
  display: grid;
  gap: 1.5rem;
}

.keyword-finder-page a:link {
  color: #447799;
}

.keyword-finder-info {
  padding-bottom: 1rem;
}

.keyword-finder-steps {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
}

.keyword-finder-panel,
.keyword-finder-results {
  display: grid;
  gap: 1rem;
}

.keyword-finder-form {
  display: grid;
  gap: 1rem;
}

.keyword-finder-option-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.keyword-finder-option-card {
  display: grid;
  gap: 0.6rem;
}

.keyword-finder-options {
  display: grid;
  gap: 0.6rem;
}

.keyword-finder-options label {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.keyword-finder-options input[type="radio"] {
  margin: 0;
}

.keyword-finder-box {
  padding: 1rem;
  border: 1px solid #c9d4dc;
  border-radius: 8px;
  background-color: #ffffff;
}

.keyword-finder-list {
  margin: 0;
  padding-left: 1.25rem;
}

.keyword-finder-result-row {
  margin-bottom: 0.9rem;
}

.keyword-finder-muted {
  color: #6a6f75;
}

.keyword-finder-match-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-top: 0.5rem;
}

.keyword-finder-match-option {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.keyword-finder-match-option input[type="checkbox"] {
  margin: 0;
}

.keyword-finder-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (min-width: 800px) {
  .keyword-finder-option-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
}

.tool-form {
  display: grid;
  gap: 0.9rem;
  width: 100%;
}

.tool-form input[type="file"] {
  max-width: 100%;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-form button {
  width: fit-content;
  padding: 0.6rem 1rem;
  border: 1px solid #447799;
  border-radius: 6px;
  background-color: #447799;
  color: white;
  cursor: pointer;
}

.tool-form button:hover {
  background-color: #365f79;
}

.tool-form button:disabled,
.result-actions button:disabled {
  opacity: 0.65;
  cursor: default;
}

.result-panel {
  display: grid;
  gap: 0.9rem;
  width: 100%;
}

.result-textarea {
  width: 100%;
  min-height: 22rem;
  padding: 0.85rem;
  resize: vertical;
  font: inherit;
  font-size: 1rem;
  line-height: 1.3;
}

.result-status {
  min-height: 1.2rem;
  font-size: 1.05rem;
  line-height: 1.4;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.result-actions button {
  padding: 0.6rem 1rem;
  border: 1px solid #447799;
  border-radius: 6px;
  background-color: #f7fafc;
  color: #1b2f52;
  cursor: pointer;
}

.result-actions button:not(:disabled) {
  background-color: #447799;
  color: white;
}

.result-actions button:hover:not(:disabled) {
  background-color: #365f79;
}

/* Footer */

.site-footer {
  margin-top: 2rem;
  background-color: #1b2f52;
  color: white;
}

.site-footer-inner {
  padding: 20px 0;
  font-size: 0.9rem;
  text-align: center;
}

/* Small screens */

@media (max-width: 600px) {
  .container {
    width: min(100% - 1rem, 960px);
  }

  .citation-page {
    gap: 1.5rem;
  }

  .title-bar-inner {
    min-height: auto;
    padding-block: 0.75rem;
    align-items: center;
  }

  .site-logo {
    width: 50px;
    height: 50px;
  }

  .site-nav .site-nav-inner {
    flex-wrap: wrap;
  }
}