/* age-calculator-specific styles.
 * Base chrome (variables, .pane, .btn, .actions, .status, .footer) is in /_chrome.css.
 */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 20px;
  padding: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.calc-pane {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.tab {
  appearance: none;
  background: transparent;
  color: var(--fg-mute);
  border: 1px solid transparent;
  border-bottom: none;
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
  padding: 10px 14px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: -1px;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.tab:hover {
  color: var(--fg);
}

.tab[aria-selected="true"] {
  color: var(--fg);
  background: var(--bg-pane);
  border-color: var(--border);
}

.tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Form */
.panel {
  padding-top: 6px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-time .optional {
  font-weight: 400;
  color: var(--fg-mute);
  font-size: 0.85em;
}

.field label {
  font-weight: 600;
  color: var(--fg);
}

.field input {
  appearance: none;
  background: var(--bg-elev);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  font-family: var(--mono);
  font-size: 0.95em;
}

.field input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}

.field-hint {
  margin: 0;
  font-size: 0.85em;
  color: var(--fg-mute);
}

.field-hint code {
  font-family: var(--mono);
  background: var(--bg-elev);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Result */
.result {
  display: block;
  min-height: 0;
}

.result-card {
  border-radius: 10px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.result-card.ok {
  border-color: color-mix(in srgb, var(--ok) 50%, var(--border));
}

.result-card.err {
  border-color: color-mix(in srgb, var(--err) 60%, var(--border));
  background: var(--err-bg);
}

.result-eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.78em;
  color: var(--fg-mute);
}

.result-headline {
  margin: 0;
  font-size: 1.5em;
  font-weight: 700;
  color: var(--fg);
  line-height: 1.2;
}

.result-sub {
  margin: 0;
  color: var(--fg-mute);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin: 8px 0 0 0;
}

.result-grid > div {
  background: var(--bg-pane);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
}

.result-grid dt {
  font-size: 0.78em;
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 2px 0;
}

.result-grid dd {
  margin: 0;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.05em;
  color: var(--fg);
}

.result-whimsy {
  margin: 0;
  color: var(--fg);
}

.share-note {
  margin: 10px 0 0 0;
  font-size: 0.85em;
  color: var(--fg-mute);
  word-break: break-all;
}

/* Ad slots */
.ad-slot {
  background: var(--bg-pane);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 18px;
  color: var(--fg-mute);
}

.ad-placeholder {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
}

.ad-eyebrow {
  font-size: 0.72em;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-mute);
}

.ad-placeholder code {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--fg);
  background: var(--bg-elev);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.ad-note {
  margin: 0;
  font-size: 0.85em;
  color: var(--fg-mute);
}

.ad-result {
  margin-top: 4px;
}

.sidebar-ad {
  position: sticky;
  top: 16px;
  min-height: 200px;
}

@media (max-width: 900px) {
  .sidebar-ad {
    position: static;
  }
}

/* Affiliate strip */
.affiliate-strip {
  margin: 24px 20px;
}

.affiliate-strip h2 {
  margin: 0 0 6px 0;
  font-size: 1.1em;
  color: var(--fg);
}

.affiliate-note {
  margin: 0 0 12px 0;
  font-size: 0.85em;
  color: var(--fg-mute);
}

.aff-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.aff-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
}

.aff-thumb {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 25%, var(--bg-pane)), var(--bg-pane));
  border-radius: 6px;
}

.aff-label {
  font-size: 0.9em;
  color: var(--fg);
}