/* Components — every interactive element has hover / focus-visible / active / disabled / loading. */

/* Buttons */
.btn {
  --_bg: var(--glass); --_fg: var(--text);
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  min-height: var(--tap); min-width: var(--tap); padding: var(--s-2) var(--s-5);
  border-radius: var(--r-pill); border: 1px solid var(--glass-border);
  background: var(--_bg); color: var(--_fg); font: 600 var(--fs-md)/1.2 var(--font-body);
  cursor: pointer; text-decoration: none;
  transition: transform var(--dur-fast) var(--ease), filter var(--dur) var(--ease), background var(--dur) var(--ease);
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: scale(.97); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; transform: none; filter: none; }
.btn[aria-busy="true"] { pointer-events: none; }
.btn[aria-busy="true"]::after {
  content: ""; width: 1em; height: 1em; border-radius: 50%;
  border: 2px solid currentColor; border-inline-end-color: transparent; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.btn--primary {
  --_bg: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 70%, white));
  --_fg: var(--accent-ink); border-color: transparent; font-size: var(--fs-lg); min-height: 56px;
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 35%, transparent);
}
.btn--block { width: 100%; }
.btn--ghost { --_bg: transparent; border-color: transparent; }
.btn--icon { padding: 0; width: var(--tap); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn--whatsapp { --_bg: #1f8f4e; --_fg: #fff; border-color: transparent; }

/* Fields */
.field { display: grid; gap: var(--s-2); }
.field label { font-weight: 600; }
.field .hint { color: var(--muted); font-size: var(--fs-sm); }
.input {
  width: 100%; min-height: 56px; padding: var(--s-3) var(--s-4);
  border-radius: var(--r-md); border: 1px solid var(--glass-border);
  background: var(--glass-strong); color: var(--text);
  font: 500 var(--fs-xl)/1.3 var(--font-body); text-align: start;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.input::placeholder { color: var(--muted); opacity: .8; }
.input:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--glass-border)); }
.input:focus-visible { outline: none; border-color: var(--focus); box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 45%, transparent); }
.input[aria-invalid="true"] { border-color: var(--warn); }
.input:disabled { opacity: .55; }
.error { display: flex; gap: var(--s-2); align-items: center; color: var(--warn); font-size: var(--fs-sm); font-weight: 500; }
.error:empty { display: none; }
.error::before { content: "ⓘ"; font-weight: 700; }

/* Chips (radiogroup) */
.chips { display: flex; flex-wrap: wrap; gap: var(--s-2); border: 0; padding: 0; margin: 0; }
.chips legend { width: 100%; margin-bottom: var(--s-2); font-size: var(--fs-sm); color: var(--muted); }
.chip {
  display: inline-flex; align-items: center; gap: var(--s-1); min-height: 40px; padding: var(--s-1) var(--s-4);
  border-radius: var(--r-pill); border: 1px solid var(--glass-border); background: var(--glass);
  color: var(--text); font: 500 var(--fs-sm) var(--font-body); cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.chip:hover { border-color: var(--accent); }
.chip[aria-checked="true"] { background: color-mix(in srgb, var(--accent) 22%, transparent); border-color: var(--accent); }
.chip[aria-checked="true"]::before { content: "✓"; font-weight: 700; }
.chip--example { font-family: var(--font-body); direction: ltr; unicode-bidi: isolate; }

/* Switch (tone) */
.switch { display: inline-flex; align-items: center; gap: var(--s-2); min-height: var(--tap); cursor: pointer;
  background: none; border: 0; color: var(--text); font: 500 var(--fs-sm) var(--font-body); padding: 0 var(--s-1); white-space: nowrap; }
.switch__track { width: 44px; height: 26px; border-radius: var(--r-pill); background: var(--glass-border); position: relative;
  transition: background var(--dur) var(--ease); flex: none; }
.switch__track::after { content: ""; position: absolute; top: 3px; inset-inline-start: 3px; width: 20px; height: 20px;
  border-radius: 50%; background: var(--text); transition: inset-inline-start var(--dur) var(--ease); }
.switch[aria-checked="true"] .switch__track { background: var(--info); }
.switch[aria-checked="true"] .switch__track::after { inset-inline-start: 21px; background: var(--bg); }

/* Card */
.card { padding: var(--s-5); display: grid; gap: var(--s-5); }
.card__title { font-size: var(--fs-xl); }
.card__title:focus { outline: none; }
.card__title:focus-visible { outline: none; } /* programmatic focus target (tabindex=-1), not a control */
.big { display: grid; justify-items: center; gap: var(--s-1); padding-block: var(--s-3); text-align: center; }
.big__value { font: 700 var(--fs-hero)/1 var(--font-display); color: var(--accent);
  text-shadow: 0 4px 30px color-mix(in srgb, var(--accent) 45%, transparent); }
.big__meta { color: var(--muted); font-size: var(--fs-md); }
.badge { display: inline-flex; align-items: center; gap: var(--s-1); padding: 2px var(--s-3); border-radius: var(--r-pill);
  font-size: var(--fs-xs); font-weight: 700; background: color-mix(in srgb, var(--info) 22%, transparent); color: var(--text); }
.section { display: grid; gap: var(--s-3); padding-top: var(--s-4); border-top: 1px solid var(--glass-border); }
.section__title { font-family: var(--font-body); font-size: var(--fs-sm); font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--muted); }
.pills { display: flex; flex-wrap: wrap; gap: var(--s-2); list-style: none; margin: 0; padding: 0; }
.pill { display: inline-flex; gap: var(--s-2); align-items: baseline; padding: var(--s-2) var(--s-4); border-radius: var(--r-pill);
  background: var(--glass); border: 1px solid var(--glass-border); }
.pill b { color: var(--accent); font-variant-numeric: tabular-nums; }
.table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.table th, .table td { padding: var(--s-2) 0; text-align: start; border-bottom: 1px solid var(--glass-border); }
.table td:last-child { text-align: end; font-weight: 700; color: var(--accent); }
.table tr:last-child th, .table tr:last-child td { border-bottom: 0; }
.numrow { display: grid; grid-template-columns: auto 1fr; gap: var(--s-1) var(--s-3); align-items: baseline; }
.numrow__n { font: 700 var(--fs-xl) var(--font-display); color: var(--accent); min-width: 2ch; text-align: center; }
.numrow__label { font-weight: 600; }
.numrow__m { grid-column: 2; color: var(--muted); }
.letter { display: flex; gap: var(--s-4); align-items: center; }
.letter__char { font: 700 var(--fs-3xl)/1 var(--font-display); color: var(--accent); width: 64px; height: 64px;
  display: grid; place-items: center; border-radius: var(--r-md); background: var(--glass); border: 1px solid var(--glass-border); }
.quote { margin: 0; padding: var(--s-4); border-radius: var(--r-md); border-inline-start: 3px solid var(--info);
  background: color-mix(in srgb, var(--info) 10%, transparent); font-family: var(--font-display); font-size: var(--fs-lg); }
.quote cite { display: block; margin-top: var(--s-2); font: 500 var(--fs-sm) var(--font-body); color: var(--muted); font-style: normal; }
.bottomline { padding: var(--s-4); border-radius: var(--r-md);
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--info) 12%, transparent));
  font-size: var(--fs-lg); font-weight: 500; }
.disclaimer { color: var(--muted); font-size: var(--fs-xs); text-align: center; margin-inline: auto; }

/* Share bar (sticky, glass) */
.sharebar { position: sticky; bottom: 88px; z-index: 5; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--s-1); padding: var(--s-1); border-radius: var(--r-lg); }
.sharebar .btn { flex-direction: column; gap: 2px; min-height: 56px; padding-inline: var(--s-2); border-radius: var(--r-md);
  font-size: var(--fs-xs); line-height: 1.15; text-align: center; }
.narrow { max-width: 640px; margin-inline: auto; width: 100%; }
.empty-state { display: grid; place-items: center; gap: var(--s-3); min-height: 280px; padding: var(--s-6);
  text-align: center; color: var(--muted); border: 1px dashed var(--glass-border); border-radius: var(--r-lg); }
.empty-state__icon { font: 700 var(--fs-3xl)/1 var(--font-display); color: var(--accent); opacity: .7; }
.about-grid { display: grid; gap: var(--s-5); }
@media (min-width: 600px) {
  .columns { grid-auto-flow: row; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); overflow: visible; }
}
@media (min-width: 1024px) {
  .sharebar { position: static; grid-template-columns: 1fr; padding: var(--s-2); }
  .sharebar .btn { flex-direction: row; justify-content: flex-start; min-height: 52px; font-size: var(--fs-md); padding-inline: var(--s-4); gap: var(--s-3); }
  .about-grid { grid-template-columns: 1fr 1fr; align-items: start; }
  .about-grid > .span-2 { grid-column: 1 / -1; }
}

/* Compare */
.compare-list { display: grid; gap: var(--s-3); }
.compare-item { display: grid; grid-template-columns: 1fr auto; gap: var(--s-2); align-items: end; }
.columns { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(200px, 1fr); gap: var(--s-3);
  overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: var(--s-2); }
.columns > * { scroll-snap-align: start; }
.mini { padding: var(--s-4); display: grid; gap: var(--s-2); text-align: center; }
.mini__num { direction: ltr; unicode-bidi: isolate; color: var(--muted); font-size: var(--fs-sm); }
.mini__big { font: 700 var(--fs-3xl)/1 var(--font-display); color: var(--accent); }
.mini[data-match="true"] { outline: 2px solid var(--accent); outline-offset: 2px; }
.mini[data-match="true"]::after { content: "✦"; position: absolute; top: var(--s-2); inset-inline-end: var(--s-3); color: var(--accent); }

/* Couple */
.duo { display: grid; gap: var(--s-4); }
@media (min-width: 560px) { .duo { grid-template-columns: 1fr 1fr; } }
.heart { font: 700 var(--fs-hero)/1 var(--font-display); color: var(--accent); text-align: center; }

/* Toast + dialog */
.toast { position: fixed; inset-inline: 0; bottom: 110px; margin-inline: auto; width: max-content; max-width: calc(100% - 32px);
  padding: var(--s-3) var(--s-5); z-index: 50; font-weight: 600; animation: rise var(--dur-slow) var(--ease); }
.toast[hidden] { display: none; }
@keyframes rise { from { opacity: 0; transform: translateY(12px); } }
dialog.sheet { width: min(100% - 24px, 520px); max-height: 92dvh; padding: var(--s-5); color: var(--text);
  border-radius: var(--r-lg); margin: auto auto var(--s-3); }
dialog.sheet::backdrop { background: rgb(5 8 20 / .55); backdrop-filter: blur(4px); }
.story-preview { width: 100%; max-height: 60dvh; object-fit: contain; border-radius: var(--r-md); }

/* Skeleton */
.skeleton { border-radius: var(--r-sm); min-height: 1.2em;
  background: linear-gradient(90deg, var(--glass), var(--glass-highlight), var(--glass)); background-size: 200% 100%;
  animation: shimmer 1.2s linear infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }

.banner { padding: var(--s-3) var(--s-4); text-align: center; font-size: var(--fs-sm); }
.trust { display: flex; gap: var(--s-2); align-items: center; justify-content: center; color: var(--muted); font-size: var(--fs-sm); text-align: center; flex-wrap: wrap; }
.divider-or { display: flex; gap: var(--s-2); }
.divider-or > * { flex: 1; }

/* Smart input */
.input--smart { resize: none; overflow: hidden; min-height: 64px; line-height: 1.4; font-size: var(--fs-xl); }
textarea.input--smart[rows="4"] { min-height: 140px; overflow: auto; font-size: var(--fs-lg); }
.detect { min-height: 1.4em; font-size: var(--fs-sm); font-weight: 600; color: var(--info); }
.detect:empty::before { content: "\a0"; }

/* How we got there */
.how { border: 1px solid var(--glass-border); border-radius: var(--r-md); background: var(--glass); }
.how + .how { margin-top: var(--s-3); }
.how summary { cursor: pointer; padding: var(--s-3) var(--s-4); min-height: var(--tap); font-weight: 700; list-style-position: inside; border-radius: var(--r-md); }
.how summary:hover { background: var(--glass); }
.steps { margin: 0; padding: 0 var(--s-4) var(--s-4); list-style: none; display: grid; gap: var(--s-3); counter-reset: step; }
.steps li { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-2); counter-increment: step; }
.steps li::before { content: counter(step); width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center;
  font-size: var(--fs-xs); font-weight: 700; background: color-mix(in srgb, var(--accent) 25%, transparent); flex: none; }
.step__label { color: var(--muted); font-size: var(--fs-sm); min-width: 7ch; }
.terms { display: inline-flex; flex-wrap: wrap; gap: var(--s-1); align-items: center; }
.term { display: inline-grid; justify-items: center; padding: 2px var(--s-2); border-radius: var(--r-sm);
  background: var(--glass-strong); border: 1px solid var(--glass-border); line-height: 1.2; }
.term__label { font: 700 var(--fs-md) var(--font-display); }
.term__value { font-size: var(--fs-xs); color: var(--accent); font-variant-numeric: tabular-nums; }
.op { color: var(--muted); }
.eq { font-weight: 700; color: var(--accent); }
.pill--combo { flex-wrap: wrap; }
.pill__how { flex-basis: 100%; color: var(--muted); font-size: var(--fs-xs); }

/* Comparison table — a real table on tablet/desktop, stacked cards on phones */
.table-wrap { overflow-x: auto; border-radius: var(--r-md); }
.cmp-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.cmp-table th, .cmp-table td { padding: var(--s-3); text-align: start; border-bottom: 1px solid var(--glass-border); vertical-align: middle; }
.cmp-table thead th { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.cmp-table .strong { font: 700 var(--fs-xl) var(--font-display); color: var(--accent); }
.cmp-table tbody tr { transition: background var(--dur) var(--ease); }
.cmp-table tbody tr[data-match="true"] { background: color-mix(in srgb, var(--accent) 16%, transparent); }
.cmp-table tbody tr[data-match="true"] th::after { content: " ✦"; color: var(--accent); }
@media (max-width: 599px) {
  .cmp-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .cmp-table, .cmp-table tbody, .cmp-table tr, .cmp-table th, .cmp-table td { display: block; }
  .cmp-table tr { padding: var(--s-3); margin-bottom: var(--s-3); border: 1px solid var(--glass-border); border-radius: var(--r-md); }
  .cmp-table th, .cmp-table td { display: flex; justify-content: space-between; gap: var(--s-3); border: 0; padding: var(--s-1) 0; }
  .cmp-table th[data-label]::before, .cmp-table td[data-label]::before { content: attr(data-label); color: var(--muted); font: 500 var(--fs-sm) var(--font-body); }
}

/* S8 feedback */
.hp { position: absolute !important; inset-inline-start: -10000px; width: 1px; height: 1px; opacity: 0; }
.chip--radio { cursor: pointer; }
.chip--radio input { position: absolute; opacity: 0; pointer-events: none; }
.chip--radio:has(input:checked) { background: color-mix(in srgb, var(--accent) 22%, transparent); border-color: var(--accent); }
.chip--radio:has(input:checked)::before { content: "✓"; font-weight: 700; }
.chip--radio:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }
.linkish { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; font: inherit; cursor: pointer; min-height: 24px; }
.linkish:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
textarea.input { resize: vertical; min-height: 140px; line-height: 1.5; }

/* Result page: "new search or correction" bar (spans both columns on desktop) */
.again { padding: var(--s-3) var(--s-4); display: grid; gap: var(--s-2); border-radius: var(--r-lg); }
.layout-card > .again { grid-column: 1 / -1; }
.again__label { font-weight: 700; font-size: var(--fs-sm); }
.again__row { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.again__row .input { flex: 1 1 220px; min-width: 0; }
.again__row .btn { flex: 1 0 auto; }
@media (min-width: 600px) { .again__row .btn { flex: 0 0 auto; } }
.again .error:empty { display: none; }

/* "With sources" extras: method notes, letter-by-letter list */
.method-note { display: block; font-weight: 400; font-size: var(--fs-xs); color: var(--muted); margin-top: 2px; }
.letters-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s-2); }
.letters-list li { display: flex; align-items: center; gap: var(--s-3); }

/* Segmented two-option switch (couple match: names / dates) */
.seg { border: 0; margin: 0 0 var(--s-3); padding: 0; display: flex; flex-wrap: wrap; gap: var(--s-2); align-items: center; }
.seg__legend { font-weight: 700; font-size: var(--fs-sm); padding: 0; margin-bottom: var(--s-2); width: 100%; }
.seg__opt { position: relative; }
.seg__opt input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg__opt span { display: inline-block; min-height: 40px; padding: var(--s-2) var(--s-4); border-radius: var(--r-pill);
  border: 1px solid var(--glass-border); line-height: 24px; transition: background-color 160ms ease, color 160ms ease; }
.seg__opt input:checked + span { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.seg__opt input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }