/**
 * Styles for the Colour Contrast Checker tool.
 * Live preview, WCAG pass/fail rows, and tint suggestion cards.
 */

.contrast-tool {
  --tool-ink: #2c3e50;
  --tool-teal: #1abc9c;
  --tool-teal-deep: #16a085;
  --tool-paper: #ffffff;
  --tool-mist: #f3f7f6;
  --tool-pass: #1e8449;
  --tool-fail: #c0392b;
}

.contrast-tool .page-section {
  background:
    radial-gradient(circle at top right, rgba(26, 188, 156, 0.12), transparent 40%),
    linear-gradient(180deg, #f7faf9 0%, #ffffff 55%, #f4f8f7 100%);
}

.contrast-layout {
  display: grid;
  gap: 1.5rem;
  max-width: 72rem;
  margin: 0 auto;
}

@media (min-width: 960px) {
  .contrast-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

.contrast-panel {
  background: var(--tool-paper);
  border: 1px solid rgba(44, 62, 80, 0.1);
  border-radius: 0.55rem;
  box-shadow: 0 10px 28px rgba(44, 62, 80, 0.07);
  padding: 1.35rem;
}

.contrast-panel h2 {
  margin: 0 0 1rem;
  font-family: "Montserrat", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--tool-ink);
}

.contrast-controls {
  display: grid;
  gap: 1rem;
}

.contrast-colour-field {
  display: grid;
  gap: 0.45rem;
}

.contrast-colour-field label {
  font-family: "Montserrat", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--tool-ink);
}

.contrast-colour-row {
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr);
  gap: 0.65rem;
  align-items: center;
}

.contrast-colour-row input[type="color"] {
  width: 3.25rem;
  height: 3.25rem;
  padding: 0;
  border: 2px solid rgba(44, 62, 80, 0.18);
  border-radius: 0.4rem;
  background: transparent;
  cursor: pointer;
}

.contrast-colour-row input[type="text"] {
  width: 100%;
  border: 2px solid rgba(44, 62, 80, 0.18);
  border-radius: 0.4rem;
  padding: 0.7rem 0.85rem;
  font-family: "Montserrat", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--tool-ink);
}

.contrast-colour-row input[type="text"]:focus {
  outline: none;
  border-color: var(--tool-teal);
  box-shadow: 0 0 0 3px rgba(26, 188, 156, 0.2);
}

.contrast-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.contrast-action-btn {
  appearance: none;
  border: 2px solid var(--tool-ink);
  background: transparent;
  color: var(--tool-ink);
  font-family: "Montserrat", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.6rem 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.contrast-action-btn:hover,
.contrast-action-btn:focus-visible {
  background: var(--tool-teal);
  border-color: var(--tool-teal);
  color: #fff;
  outline: none;
}

.contrast-preview {
  min-height: 11rem;
  border-radius: 0.45rem;
  padding: 1.35rem 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.65rem;
  border: 1px solid rgba(44, 62, 80, 0.08);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.contrast-preview-kicker {
  margin: 0;
  font-family: "Montserrat", sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
}

.contrast-preview-title {
  margin: 0;
  font-family: "Montserrat", sans-serif;
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.2;
}

.contrast-preview-body {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.55;
  max-width: 28rem;
}

.contrast-ratio-block {
  margin-top: 1.15rem;
  padding-top: 1.15rem;
  border-top: 1px solid rgba(44, 62, 80, 0.1);
}

.contrast-ratio-label {
  margin: 0 0 0.25rem;
  font-family: "Montserrat", sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #6c757d;
}

.contrast-ratio-value {
  margin: 0 0 1rem;
  font-family: "Montserrat", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--tool-ink);
}

.contrast-result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid rgba(44, 62, 80, 0.08);
  color: var(--tool-ink);
  font-size: 0.95rem;
}

.contrast-result-row:last-child {
  border-bottom: none;
}

.contrast-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3.6rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  font-family: "Montserrat", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #fff;
}

.contrast-badge.is-pass {
  background: var(--tool-pass);
}

.contrast-badge.is-fail {
  background: var(--tool-fail);
}

.tint-section {
  max-width: 72rem;
  margin: 2rem auto 0;
}

.tint-section-intro {
  margin: 0 0 1rem;
  color: #495057;
  max-width: 40rem;
}

.tint-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

@media (min-width: 700px) {
  .tint-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.tint-card {
  appearance: none;
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 0.9rem;
  align-items: stretch;
  width: 100%;
  text-align: left;
  border: 2px solid rgba(44, 62, 80, 0.12);
  border-radius: 0.5rem;
  background: var(--tool-paper);
  padding: 0.65rem;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.tint-card:hover,
.tint-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--tool-teal);
  box-shadow: 0 10px 22px rgba(44, 62, 80, 0.1);
  outline: none;
}

.tint-swatch {
  display: grid;
  place-items: center;
  border-radius: 0.35rem;
  background: var(--tint-bg);
  color: var(--tint-fg);
  min-height: 5.5rem;
}

.tint-swatch-sample {
  font-family: "Montserrat", sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
}

.tint-card-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.2rem 0.2rem 0.2rem 0;
}

.tint-card-label {
  font-family: "Montserrat", sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--tool-ink);
}

.tint-card-meta {
  color: #6c757d;
  font-size: 0.82rem;
  line-height: 1.4;
}

.tint-card-action {
  margin-top: 0.25rem;
  font-family: "Montserrat", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--tool-teal-deep);
}

.tint-empty {
  margin: 0;
  color: #6c757d;
}

.tool-intro {
  max-width: 40rem;
  margin: 0 auto 2rem;
  text-align: center;
  color: #495057;
  font-size: 1.05rem;
  line-height: 1.6;
}