/* =============================================================
   CambioHoy — styles.css
   Mobile-first. Sections: tokens · base · utilities · header ·
   hero · tool card · results · content · ads · dialogs · footer ·
   responsive · reduced-motion
   ============================================================= */

/* 1. Tokens ---------------------------------------------------- */
:root {
  --bg: #f2f8f7;
  --surface: #ffffff;
  --surface-2: #eaf4f3;
  --ink: #0d1f24;
  --ink-2: #3f5a5f;
  --ink-3: #66808a;
  --line: #d4e5e3;
  --accent: #0e8077;          /* verde agua — 4.8:1 on white */
  --accent-ink: #ffffff;
  --accent-soft: #ddf3f0;
  --aqua-1: #74dccc;
  --aqua-2: #2db3a2;
  --aqua-ink: #04332e;
  --aqua-glow: rgba(45, 179, 162, .35);
  --sun: #f6b40e;
  --good: #0a7d4f;
  --good-soft: #e3f5ec;
  --best: #b97d00;
  --best-soft: #fff2cc;
  --warn: #8a5a00;
  --warn-soft: #fff4d6;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 1px 2px rgba(15, 27, 45, .06), 0 8px 28px rgba(15, 27, 45, .08);
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --wrap: 1080px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #081719;
    --surface: #0f2226;
    --surface-2: #142c31;
    --ink: #e6f3f2;
    --ink-2: #a9c6c4;
    --ink-3: #7f9d9d;
    --line: #1f3c42;
    --accent: #4fd1bf;
    --accent-ink: #032a26;
    --accent-soft: #123a38;
    --good: #43c58a;
    --good-soft: #13352a;
    --best: #f2c14e;
    --best-soft: #3a2e10;
    --warn: #f4c35a;
    --warn-soft: #3a2e10;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 28px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}

/* 2. Base ------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: var(--accent); }
p { text-wrap: pretty; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; text-wrap: balance; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.num { font-variant-numeric: tabular-nums; }

/* 3. Utilities ------------------------------------------------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 16px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: -100px; left: 1rem; padding: .6rem 1rem; background: var(--surface); color: var(--ink); z-index: 9999; border-radius: 8px; }
.skip-link:focus { top: 1rem; }

/* 4. Header ---------------------------------------------------- */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.08rem; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.brand svg { width: 28px; height: 28px; }
.brand b { color: var(--accent); font-weight: 800; }
.lang { display: inline-flex; background: var(--surface-2); border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.lang a { display: inline-block; padding: 4px 11px; border-radius: 999px; font-size: .82rem; font-weight: 700; color: var(--ink-2); text-decoration: none; }
.lang a[aria-current="true"] { background: var(--accent); color: var(--accent-ink); }

/* 5. Hero ------------------------------------------------------ */
.hero { padding-top: 18px; padding-bottom: 12px; }
.hero h1 { font-size: clamp(1.45rem, 5.4vw, 2.3rem); font-weight: 800; }
.hero .sub { color: var(--ink-2); margin-top: 6px; font-size: .98rem; }
.today { display: flex; flex-wrap: wrap; gap: 6px 16px; align-items: baseline; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 12px; font-size: .95rem; }
.today strong { font-size: 1.15rem; }
.today .lbl { color: var(--ink-3); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; font-weight: 700; }
.tourist-btn {
  margin-top: 14px; width: 100%; display: flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 56px; padding: 12px 18px; border-radius: 16px;
  background: linear-gradient(135deg, var(--aqua-1), var(--aqua-2)); color: var(--aqua-ink);
  font-weight: 800; font-size: 1.06rem; box-shadow: 0 6px 18px var(--aqua-glow);
  transition: transform .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.tourist-btn svg { width: 26px; height: 26px; flex: none; }
.tourist-btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px var(--aqua-glow); }
.tourist-btn:active { transform: translateY(1px); }

/* 6. Tool card ------------------------------------------------- */
.tool-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.noscript { padding: 12px; background: var(--warn-soft); color: var(--warn); border-radius: var(--radius-sm); margin-bottom: 12px; }
.field-label { display: block; font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); margin-bottom: 4px; }
.amount-wrap { position: relative; }
.amount-input {
  width: 100%; min-height: 60px; padding: 10px 76px 10px 14px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--line); background: var(--surface-2); font-size: 1.75rem; font-weight: 700;
  font-variant-numeric: tabular-nums; transition: border-color .15s;
}
.amount-input:focus { outline: none; border-color: var(--accent); background: var(--surface); }
.amount-code { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); font-weight: 800; color: var(--ink-3); pointer-events: none; }
.pair { display: grid; grid-template-columns: 1fr auto 1fr; gap: 8px; align-items: end; margin-top: 12px; }
.cur-pick { position: relative; min-width: 0; }
.cur-face {
  display: flex; flex-direction: column; justify-content: center; min-height: 58px; padding: 6px 30px 6px 12px;
  border: 1.5px solid var(--line); border-radius: var(--radius-sm); background: var(--surface);
  position: relative;
}
.cur-face::after { content: ""; position: absolute; right: 12px; top: 50%; width: 8px; height: 8px; border-right: 2px solid var(--ink-3); border-bottom: 2px solid var(--ink-3); transform: translateY(-70%) rotate(45deg); }
.cur-code { font-weight: 800; font-size: 1.12rem; line-height: 1.2; }
.cur-name { font-size: .78rem; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; line-height: 1.3; }
.cur-pick select { position: absolute; inset: auto 0 0 0; height: 58px; width: 100%; opacity: 0; cursor: pointer; font-size: 16px; }
.cur-pick:focus-within .cur-face { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.swap {
  width: 46px; height: 46px; margin-bottom: 6px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: var(--accent-ink); box-shadow: 0 4px 12px var(--aqua-glow);
  transition: transform .35s var(--ease-out);
}
.swap svg { width: 22px; height: 22px; }
.swap.spin { transform: rotate(180deg); }

.types { display: flex; gap: 6px; overflow-x: auto; margin: 14px -16px 0; padding: 2px 16px 4px; scrollbar-width: none; }
.types::-webkit-scrollbar { display: none; }
.types[hidden] { display: none; }
.chip {
  flex: none; padding: 7px 13px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--surface);
  font-size: .88rem; font-weight: 700; color: var(--ink-2); white-space: nowrap;
}
.chip[aria-checked="true"] { background: var(--ink); border-color: var(--ink); color: var(--surface); }

/* 7. Results --------------------------------------------------- */
.result { margin-top: 14px; min-height: 92px; }
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.rcard {
  position: relative; text-align: left; padding: 10px 12px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--line); background: var(--surface); min-width: 0;
  transition: border-color .15s, background .15s;
}
.rcard:last-child:nth-child(odd) { grid-column: 1 / -1; }
.rcard[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); }
.rcard .t { display: flex; align-items: center; gap: 6px; font-size: .8rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-2); }
.rcard .v { display: block; font-size: 1.22rem; font-weight: 800; font-variant-numeric: tabular-nums; margin-top: 2px; overflow-wrap: anywhere; line-height: 1.25; }
.rcard .v small { font-size: .72rem; color: var(--ink-3); font-weight: 700; margin-left: 3px; }
.rcard .r { display: block; font-size: .74rem; color: var(--ink-3); font-variant-numeric: tabular-nums; margin-top: 2px; }
.rcard .note { font-style: italic; }
.rcard .badge { position: absolute; top: -9px; right: 8px; }
.badge { display: inline-block; font-size: .64rem; font-weight: 800; letter-spacing: .03em; padding: 2px 7px; border-radius: 999px; background: var(--best-soft); color: var(--best); text-transform: uppercase; }
.rcard.best { border-color: var(--best); }
.single { padding: 14px; border-radius: var(--radius-sm); background: var(--accent-soft); }
.single .big { font-size: clamp(1.9rem, 8vw, 2.6rem); font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1.1; overflow-wrap: anywhere; }
.single .big small { font-size: 1rem; color: var(--ink-2); margin-left: 6px; }
.single .from { color: var(--ink-2); font-size: .92rem; font-variant-numeric: tabular-nums; }
.rate-line { margin-top: 10px; font-size: .86rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.status { margin-top: 8px; font-size: .8rem; color: var(--ink-3); display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; }
.status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--good); display: inline-block; margin-right: 5px; }
.status.loading .dot { background: var(--sun); animation: pulse 1s infinite alternate; }
.status.stale .dot { background: #d9822b; }
.warn { margin-top: 10px; padding: 10px 12px; border-radius: var(--radius-sm); background: var(--warn-soft); color: var(--warn); font-size: .86rem; font-weight: 600; }
.warn[hidden] { display: none; }
.warn button { text-decoration: underline; font-weight: 800; color: inherit; margin-left: 4px; }
.actions { display: flex; gap: 8px; margin-top: 12px; }
.btn-share {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px;
  border-radius: var(--radius-sm); border: 1.5px solid var(--accent); color: var(--accent); font-weight: 800;
}
.btn-share svg { width: 18px; height: 18px; }
.btn-share.ok { border-color: var(--good); color: var(--good); }
.quick { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.quick-title { font-size: 1rem; font-weight: 800; }
.quick table { width: 100%; border-collapse: collapse; margin-top: 6px; font-variant-numeric: tabular-nums; }
.quick th, .quick td { padding: 7px 4px; border-bottom: 1px solid var(--line); text-align: right; font-size: .94rem; }
.quick th { font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); }
.quick th:first-child, .quick td:first-child { text-align: left; color: var(--ink-2); }
.quick td:last-child { font-weight: 700; }
.quick-note { font-size: .78rem; color: var(--ink-3); margin-top: 6px; }
.disclaimer-mini { font-size: .78rem; color: var(--ink-3); margin-top: 10px; text-align: center; }

/* 8. Content sections ----------------------------------------- */
.section { padding-block: 28px; }
.section h2 { font-size: clamp(1.3rem, 4.4vw, 1.75rem); font-weight: 800; margin-bottom: 6px; }
.section .lead { color: var(--ink-2); margin-bottom: 14px; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.rates-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.rates-table th, .rates-table td { padding: 10px 6px; border-bottom: 1px solid var(--line); text-align: right; }
.rates-table th:first-child, .rates-table td:first-child { text-align: left; }
.rates-table thead th { font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); }
.rates-table td:first-child strong { display: block; }
.rates-table td:first-child span { font-size: .78rem; color: var(--ink-3); }
.rates-meta { font-size: .8rem; color: var(--ink-3); margin-top: 8px; }
.steps { display: grid; gap: 10px; counter-reset: s; list-style: none; padding: 0; }
.steps li { display: grid; grid-template-columns: 40px 1fr; gap: 12px; align-items: start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.steps li::before { counter-increment: s; content: counter(s); width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 800; font-size: 1.1rem; }
.steps h3, .grid h3 { font-size: 1.04rem; margin-bottom: 2px; }
.steps p, .grid p { color: var(--ink-2); font-size: .95rem; }
.grid { display: grid; gap: 10px; }
.grid article { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.grid .tag { display: inline-block; font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; padding: 2px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); margin-bottom: 6px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 8px; }
.faq summary { cursor: pointer; padding: 13px 40px 13px 14px; font-weight: 700; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 14px; top: 50%; transform: translateY(-50%); font-size: 1.3rem; color: var(--accent); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 14px 14px; color: var(--ink-2); }
.links { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; list-style: none; padding: 0; }
.links a { display: block; padding: 11px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); text-decoration: none; color: var(--ink); font-weight: 600; font-size: .92rem; height: 100%; }
.links a:hover { border-color: var(--accent); }
.links a[aria-current="page"] { border-color: var(--accent); background: var(--accent-soft); }
.disclaimer { font-size: .88rem; color: var(--ink-2); background: var(--surface-2); border-radius: var(--radius); padding: 14px 16px; border: 1px solid var(--line); }
.prose { max-width: 760px; }
.prose h1 { font-size: 1.8rem; margin: 24px 0 10px; }
.prose h2 { font-size: 1.2rem; margin: 20px 0 6px; }
.prose p, .prose li { color: var(--ink-2); margin-bottom: 8px; }
.prose ul { padding-left: 1.2rem; }
.todo { background: var(--warn-soft); color: var(--warn); padding: 1px 6px; border-radius: 4px; }

/* 9. Ads (placeholders only) ---------------------------------- */
.ad-slot {
  display: grid; place-items: center; text-align: center; color: var(--ink-3); background: repeating-linear-gradient(-45deg, transparent 0 10px, rgba(127, 140, 160, .07) 10px 20px);
  border: 1.5px dashed var(--line); border-radius: var(--radius-sm); font-size: .74rem; font-weight: 800; letter-spacing: .14em;
}
.ad-slot small { display: block; font-weight: 500; letter-spacing: 0; font-size: .7rem; }
.ad-leaderboard { min-height: 100px; margin-top: 18px; }
.ad-incontent { min-height: 280px; margin-block: 8px; }
.x-btn { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--surface-2); color: var(--ink); font-size: 1.2rem; line-height: 1; border: 1px solid var(--line); }

/* 10. Dialogs -------------------------------------------------- */
dialog { border: 0; padding: 0; background: transparent; color: var(--ink); max-width: none; max-height: none; }
dialog::backdrop { background: rgba(8, 15, 28, .55); }
.sheet {
  position: fixed; inset: auto 0 0 0; margin: 0; width: 100%; max-height: 92vh; overflow: auto;
  background: var(--surface); border-radius: 22px 22px 0 0; padding: 18px 16px calc(18px + env(safe-area-inset-bottom));
}
.sheet-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 12px; }
.sheet-head h2 { font-size: 1.3rem; font-weight: 800; }
.sheet-head p { font-size: .9rem; color: var(--ink-2); margin-top: 2px; }
.t-row { display: grid; grid-template-columns: 1fr; gap: 10px; }
.t-row select { width: 100%; min-height: 50px; border-radius: var(--radius-sm); border: 1.5px solid var(--line); background: var(--surface); padding: 0 12px; font-weight: 700; font-size: 16px; }
.t-price .amount-input { padding-left: 38px; font-size: 2rem; min-height: 68px; }
.t-price .peso { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); font-size: 1.6rem; font-weight: 800; color: var(--ink-3); pointer-events: none; }
.t-result { margin-top: 14px; padding: 14px; border-radius: var(--radius-sm); background: var(--accent-soft); }
.t-result .big { font-size: clamp(2rem, 9vw, 2.6rem); font-weight: 800; line-height: 1.1; font-variant-numeric: tabular-nums; }
.t-result .big small { font-size: 1rem; margin-left: 6px; color: var(--ink-2); }
.t-result .how { font-size: .85rem; color: var(--ink-2); }
.t-list { list-style: none; padding: 0; margin-top: 10px; display: grid; gap: 6px; }
.t-list li { display: flex; justify-content: space-between; gap: 10px; align-items: center; padding: 9px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; font-size: .94rem; }
.t-list li.best { border-color: var(--best); }
.t-list b { font-variant-numeric: tabular-nums; white-space: nowrap; }
.t-hint { margin-top: 10px; font-size: .9rem; font-weight: 700; color: var(--accent); }
.t-tips { margin-top: 16px; }
.t-tips h3 { font-size: 1.02rem; margin-bottom: 6px; }
.t-tips dl { display: grid; gap: 8px; }
.t-tips dt { font-weight: 800; font-size: .92rem; }
.t-tips dd { margin: 0; color: var(--ink-2); font-size: .9rem; }

/* 11. Footer --------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); margin-top: 24px; padding: 22px 0 40px; font-size: .86rem; color: var(--ink-3); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 10px; }
.site-footer a { color: var(--ink-2); }

/* 12. Effects -------------------------------------------------- */
@keyframes pulse { from { opacity: .35; } to { opacity: 1; } }
@keyframes pop { from { opacity: .4; } to { opacity: 1; } }
.flash { animation: pop .3s var(--ease-out); }

/* 13. Responsive ----------------------------------------------- */
@media (min-width: 540px) {
  .cards { grid-template-columns: repeat(3, 1fr); }
  .rcard:last-child:nth-child(odd) { grid-column: auto; }
  .t-row { grid-template-columns: 1.4fr 1fr; align-items: end; }
  .links { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 720px) {
  .tool-card { padding: 22px; }
  .types { margin-inline: 0; padding-inline: 0; flex-wrap: wrap; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps li { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr 1fr; }
  .sheet { inset: 0; margin: auto; width: min(560px, calc(100vw - 32px)); height: fit-content; border-radius: 22px; }
  .tourist-btn { width: auto; padding-inline: 28px; }
}
@media (min-width: 960px) {
  .cards { grid-template-columns: repeat(5, 1fr); }
  .tool-layout { display: grid; grid-template-columns: minmax(0, 1fr); }
  .links { grid-template-columns: repeat(4, 1fr); }
}

/* 14. Reduced motion (only intrusive effects) ------------------ */
@media (prefers-reduced-motion: reduce) {
  .status.loading .dot { animation: none; }
  html { scroll-behavior: auto; }
}