:root {
  color-scheme: light;
  --ink: #172943;
  --muted: #64748b;
  --blue: #205eea;
  --line: #e4eaf3;
  --soft-blue: #f3f7ff;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background: #f7f9fc;
  color: var(--ink);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

[hidden] {
  display: none !important;
}

.dictionary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 12px max(5vw, 22px);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.dictionary-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
}

.dictionary-brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.dictionary-brand strong {
  color: var(--blue);
}

.dictionary-header nav {
  display: flex;
  gap: 24px;
  color: #4c5d75;
  font-size: 14px;
  font-weight: 600;
}

.dictionary-header nav a:hover,
.page-footer a:hover {
  color: var(--blue);
}

.dictionary-main {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 54px 0 32px;
}

.page-intro {
  max-width: 700px;
  margin: 0 auto 34px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.page-intro h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -0.045em;
  line-height: 1.12;
}

.page-intro > p:last-child {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 22px;
}

.tool-card {
  min-width: 0;
  padding: 27px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: #fff;
  box-shadow: 0 12px 35px rgba(27, 47, 78, 0.05);
}

.grammar-toggle {
  display: none;
}

.tool-heading {
  display: flex;
  align-items: center;
  gap: 13px;
}

.tool-icon {
  display: grid;
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 13px;
  background: #eaf1ff;
  color: var(--blue);
  font-size: 18px;
  font-weight: 800;
}

.grammar-icon {
  font-size: 14px;
}

.tool-heading .eyebrow {
  margin-bottom: 3px;
}

.tool-heading h2 {
  margin: 0;
  font-size: 23px;
  letter-spacing: -0.03em;
}

.card-description {
  margin: 18px 0 21px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.lookup-form label,
.grammar-form label,
.suggest-form label {
  display: block;
  margin-bottom: 8px;
  color: #33445e;
  font-size: 13px;
  font-weight: 700;
}

.input-row {
  display: flex;
  gap: 9px;
}

.input-row input,
.grammar-form textarea,
.suggest-form input,
.suggest-form textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid #d6deea;
  border-radius: 9px;
  background: #fff;
  color: var(--ink);
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.input-row input,
.suggest-form input {
  min-height: 46px;
  padding: 0 12px;
}

.grammar-form textarea,
.suggest-form textarea {
  padding: 12px;
  resize: vertical;
  line-height: 1.55;
}

.input-row input:focus,
.grammar-form textarea:focus,
.suggest-form input:focus,
.suggest-form textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(32, 94, 234, 0.12);
}

.primary-button,
.secondary-button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 9px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  transition: background 150ms ease, transform 150ms ease;
}

.primary-button {
  flex: 0 0 auto;
  color: #fff;
  background: var(--blue);
}

.primary-button:hover:not(:disabled) {
  background: #174dc2;
  transform: translateY(-1px);
}

.primary-button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.secondary-button,
.icon-button {
  border-color: #d7e2f5;
  color: var(--blue);
  background: #fff;
}

.secondary-button:hover,
.icon-button:hover {
  background: var(--soft-blue);
}

.icon-button {
  min-height: 36px;
  padding: 0 12px;
}

.status-message {
  min-height: 20px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.status-message[data-state="error"] {
  color: #b42318;
}

.status-message[data-state="success"] {
  color: #18804b;
}

.word-result,
.grammar-result {
  margin-top: 15px;
  padding-top: 17px;
  border-top: 1px solid var(--line);
}

.word-title-row,
.grammar-result-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.word-title-row h3,
.grammar-result-heading h3 {
  margin: 0;
  font-size: 23px;
  text-transform: capitalize;
}

.phonetic {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.definition-group {
  margin-top: 17px;
}

.definition-group h4,
.related-words h4 {
  margin: 0 0 8px;
  color: #475a76;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.definition-list {
  margin: 0;
  padding-left: 21px;
}

.definition-list li {
  padding-left: 3px;
  color: #34445c;
  font-size: 14px;
  line-height: 1.55;
}

.definition-list li + li {
  margin-top: 12px;
}

.example {
  display: block;
  margin-top: 4px;
  color: #718198;
  font-size: 13px;
  font-style: italic;
}

.related-words {
  margin-top: 18px;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.word-chip {
  padding: 5px 9px;
  border-radius: 20px;
  background: var(--soft-blue);
  color: #31569a;
  font-size: 12px;
}

.result-source {
  margin: 17px 0 0;
  color: #8290a4;
  font-size: 11px;
}

.suggest-word {
  margin-top: 21px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
}

.suggest-word summary {
  color: #435570;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}

.suggest-form {
  display: grid;
  gap: 9px;
  margin-top: 14px;
}

.suggest-form label {
  margin: 2px 0 -4px;
}

.suggest-form .secondary-button {
  justify-self: start;
  margin-top: 4px;
}

.grammar-form textarea {
  display: block;
  min-height: 165px;
}

.grammar-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 11px;
}

.grammar-controls span {
  color: #8290a4;
  font-size: 11px;
}

.privacy-note {
  margin: 13px 0 0;
  color: #78869a;
  font-size: 11px;
  line-height: 1.5;
}

.grammar-result-heading {
  align-items: center;
}

.grammar-result-heading h3 {
  font-size: 16px;
}

.grammar-result-heading .secondary-button {
  min-height: 36px;
  padding: 0 10px;
  font-size: 11px;
}

.issue-list {
  display: grid;
  gap: 10px;
  margin: 15px 0 0;
  padding: 0;
  list-style: none;
}

.issue-card {
  padding: 12px;
  border: 1px solid #e8edf4;
  border-radius: 10px;
  background: #fbfcfe;
}

.issue-message {
  margin: 0;
  color: #43536b;
  font-size: 13px;
  line-height: 1.5;
}

.issue-context {
  margin: 7px 0 0;
  color: #74839a;
  font-size: 12px;
  line-height: 1.5;
}

.issue-fixes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 9px;
}

.fix-button {
  padding: 5px 9px;
  border: 1px solid #d7e2f5;
  border-radius: 7px;
  background: #fff;
  color: var(--blue);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
}

.fix-button:hover {
  background: var(--soft-blue);
}

.page-footer {
  margin: 27px 0 0;
  color: #8995a8;
  font-size: 12px;
  text-align: center;
}

.page-footer a {
  display: inline;
  color: #5b6b82;
  font-weight: 700;
}

@media (max-width: 780px) {
  .dictionary-main {
    padding-top: 40px;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .grammar-toggle {
    display: flex;
    width: 100%;
    min-width: 0;
    align-items: center;
    gap: 13px;
    padding: 15px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    color: var(--ink);
    box-shadow: 0 8px 24px rgba(27, 47, 78, 0.045);
    cursor: pointer;
    text-align: left;
  }

  .grammar-toggle-icon {
    display: grid;
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    place-items: center;
    border-radius: 12px;
    background: #eaf1ff;
    color: var(--blue);
    font-size: 13px;
    font-weight: 800;
  }

  .grammar-toggle-copy {
    display: grid;
    min-width: 0;
    gap: 3px;
  }

  .grammar-toggle-copy strong {
    font-size: 14px;
  }

  .grammar-toggle-copy > span {
    color: var(--muted);
    font-size: 11px;
    line-height: 1.4;
  }

  .grammar-toggle-action {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-left: auto;
    color: var(--blue);
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
  }

  .grammar-toggle-chevron {
    font-size: 18px;
    transition: transform 150ms ease;
  }

  .grammar-toggle[aria-pressed="true"] .grammar-toggle-chevron {
    transform: rotate(180deg);
  }

  .dictionary-card.is-hidden {
    display: none;
  }

  .grammar-card:not(.is-open) {
    display: none;
  }
}

@media (max-width: 480px) {
  .dictionary-header {
    min-height: 62px;
    padding: 10px 16px;
  }

  .dictionary-brand {
    font-size: 15px;
  }

  .dictionary-brand img {
    width: 30px;
    height: 30px;
  }

  .dictionary-header nav {
    gap: 13px;
    font-size: 12px;
  }

  .dictionary-main {
    width: min(100% - 28px, 560px);
    padding-top: 34px;
  }

  .tool-card {
    padding: 21px 17px;
  }

  .input-row {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}