/* Mutuo - estilos. Tokens semánticos, modo oscuro automático, tamaños de texto en rem. */
:root {
  color-scheme: light dark;
  --bg: #F5F5F7;
  --surface: #FFFFFF;
  --fill: #EFEFF4;
  --text: #1D1D1F;
  --text-2: #636368;
  --line: rgba(60, 60, 67, .16);
  --accent: #4338CA;
  --on-accent: #FFFFFF;
  --ok: #177A43;
  --danger: #B3261E;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 8px 24px rgba(0, 0, 0, .06);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI Variable Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI Variable Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --surface: #1C1C1E;
    --fill: #2C2C2E;
    --text: #F5F5F7;
    --text-2: #A1A1A6;
    --line: rgba(235, 235, 245, .18);
    --accent: #A5A0FF;
    --on-accent: #10103A;
    --ok: #4CD27F;
    --danger: #FF8A80;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.47 var(--font);
  -webkit-font-smoothing: antialiased;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

a { color: var(--accent); text-underline-offset: 3px; }
code { font: 0.9em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--fill); padding: .1em .35em; border-radius: 6px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 8px; }

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

.skip { position: absolute; left: 12px; top: -60px; background: var(--accent); color: var(--on-accent); padding: 10px 14px; border-radius: 10px; z-index: 10; }
.skip:focus { top: 12px; }

/* Cabecera */
.site-header {
  max-width: 44rem; margin: 0 auto; padding: 18px 20px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font: 700 1.25rem/1 var(--font-display); letter-spacing: -.02em; min-height: 44px; }
.brand-mark { color: var(--accent); }
.site-header nav { display: flex; gap: 4px; }
.site-header nav a { color: var(--text-2); text-decoration: none; padding: 10px 12px; min-height: 44px; display: inline-flex; align-items: center; border-radius: 10px; font-size: .9375rem; }
.site-header nav a:hover { color: var(--text); background: var(--fill); }

/* Página */
.page { max-width: 44rem; margin: 0 auto; padding: 8px 20px 56px; }

.hero { padding: 28px 0 24px; }
h1 { font: 700 clamp(2rem, 7vw, 2.75rem)/1.08 var(--font-display); letter-spacing: -.03em; margin: 0 0 14px; text-wrap: balance; }
h2 { font: 600 1.375rem/1.2 var(--font-display); letter-spacing: -.015em; margin: 0 0 16px; }
h3 { font: 600 1.0625rem/1.3 var(--font); margin: 24px 0 6px; }
.lead { font-size: 1.1875rem; color: var(--text-2); margin: 0 0 20px; max-width: 34rem; text-wrap: pretty; }

.trust { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.trust li { display: flex; align-items: flex-start; gap: 10px; font-size: .9375rem; color: var(--text); }
.trust svg { width: 20px; height: 20px; flex: none; margin-top: 2px; color: var(--ok); }

/* Tarjetas */
.card { background: var(--surface); border-radius: var(--radius); padding: 24px; margin-top: 16px; box-shadow: var(--shadow); }
.card[hidden] { display: none; }

/* Zona de carga */
.dropzone {
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px;
  padding: 28px 16px; min-height: 44px;
  border: 2px dashed var(--line); border-radius: 14px; background: var(--fill);
  color: var(--text); cursor: pointer; transition: border-color .15s, background-color .15s;
}
.dropzone svg { color: var(--accent); }
.dropzone:hover, .dropzone.is-over { border-color: var(--accent); }
.dropzone:focus-within { outline: 3px solid var(--accent); outline-offset: 2px; }
.dz-title { font-weight: 600; }
.dz-hint { font-size: .9375rem; color: var(--text-2); }

.files { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 8px; }
.files:empty { display: none; }
.file { display: flex; align-items: center; gap: 12px; background: var(--fill); border-radius: 12px; padding: 8px 8px 8px 14px; min-height: 52px; }
.file-info { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.file-name { font-weight: 600; font-size: .9375rem; overflow-wrap: anywhere; }
.file-meta { font-size: .8125rem; color: var(--text-2); }

.status { margin: 12px 0 0; font-size: .9375rem; color: var(--text-2); }
.status:empty { display: none; }
.status-error { color: var(--danger); }

.help { margin-top: 16px; font-size: .9375rem; }
.help summary { cursor: pointer; color: var(--accent); min-height: 44px; display: flex; align-items: center; font-weight: 500; }
.help ol { padding-left: 1.25rem; margin: 4px 0 8px; display: grid; gap: 6px; }

/* Botones */
.btn {
  appearance: none; font: 600 1rem/1 var(--font); min-height: 44px; padding: 0 18px;
  border: 0; border-radius: 12px; cursor: pointer; transition: opacity .15s, background-color .15s;
}
.btn:active { opacity: .7; }
.btn-secondary { background: var(--fill); color: var(--accent); }
.btn-secondary:hover { filter: brightness(.97); }
.btn-quiet { background: transparent; color: var(--text-2); }
.btn-quiet:hover { color: var(--text); }
.btn-block { width: 100%; margin-top: 12px; }
.btn[hidden] { display: none; }
.link-btn { appearance: none; background: none; border: 0; padding: 0 4px; font: inherit; color: var(--accent); cursor: pointer; min-height: 44px; text-decoration: underline; text-underline-offset: 3px; }
.icon-btn { appearance: none; border: 0; background: transparent; color: var(--text-2); width: 44px; height: 44px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; flex: none; }
.icon-btn:hover { background: var(--fill); color: var(--text); }
.icon-btn svg { width: 20px; height: 20px; }

/* Resultados: barra de equilibrio */
.balance-wrap { margin-bottom: 20px; }
.balance { height: 10px; border-radius: 999px; background: repeating-linear-gradient(135deg, var(--fill) 0 6px, var(--line) 6px 8px); overflow: hidden; }
.balance-mutual { display: block; height: 100%; width: var(--mutual, 0%); background: var(--accent); border-radius: 999px; transition: width .4s ease; }
.balance-text { margin: 8px 0 0; font-size: .9375rem; color: var(--text-2); }

/* Control segmentado: también funciona como resumen numérico */
.toolbar { display: grid; gap: 12px; position: sticky; top: 0; z-index: 2; background: var(--surface); padding: 8px 0 12px; }
.segmented { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--fill); padding: 3px; border-radius: 13px; }
.segmented button {
  appearance: none; border: 0; background: transparent; color: var(--text-2); cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 8px 4px; min-height: 56px; border-radius: 10px; font: inherit;
  transition: background-color .15s, color .15s;
}
.segmented button[aria-selected="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0, 0, 0, .15); }
.seg-count { font: 700 1.375rem/1.1 var(--font-display); letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.seg-label { font-size: .8125rem; font-weight: 500; }

.filters { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.field {
  font: 400 1rem/1.2 var(--font); min-height: 44px; padding: 0 14px; color: var(--text);
  background: var(--fill); border: 0; border-radius: 12px; min-width: 0;
}
.field::placeholder { color: var(--text-2); }
select.field { padding-right: 10px; }

.panel-hint { margin: 8px 0 4px; font-size: .9375rem; color: var(--text-2); }

/* Lista */
.list { list-style: none; margin: 0; padding: 0; }
.row { display: flex; align-items: center; gap: 4px; border-top: 1px solid var(--line); }
.row:first-child { border-top: 0; }
.row-link { flex: 1; min-width: 0; display: flex; align-items: center; gap: 12px; padding: 8px 4px; min-height: 60px; color: var(--text); text-decoration: none; border-radius: 12px; }
.row-link:hover { background: var(--fill); }
.avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--fill); color: var(--text-2); display: inline-flex; align-items: center; justify-content: center; font-weight: 600; text-transform: uppercase; flex: none; }
.row-text { display: flex; flex-direction: column; min-width: 0; }
.row-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-meta { font-size: .8125rem; color: var(--text-2); }
.row.is-visited .row-name { color: var(--text-2); font-weight: 500; }
.row.is-visited .avatar { background: var(--ok); color: var(--surface); }

.empty { text-align: center; color: var(--text-2); padding: 28px 8px; margin: 0; }
.hidden-note { font-size: .9375rem; color: var(--text-2); margin: 8px 0 0; text-align: center; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.note { font-size: .875rem; color: var(--text-2); margin: 16px 0 0; }

/* Pie */
.site-footer { max-width: 44rem; margin: 0 auto; padding: 0 20px 40px; font-size: .8125rem; color: var(--text-2); }
.site-footer nav { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 4px; }
.site-footer a { color: var(--text-2); padding: 12px 8px 12px 0; min-height: 44px; display: inline-flex; align-items: center; }

/* Páginas de contenido (guía, privacidad, términos) */
.prose { max-width: 40rem; }
.prose h1 { margin-top: 20px; }
.prose p, .prose li { color: var(--text); }
.prose ol, .prose ul { padding-left: 1.4rem; }
.prose li { margin: 6px 0; }
.prose .meta { color: var(--text-2); font-size: .9375rem; }
.callout { background: var(--fill); border-radius: 14px; padding: 14px 16px; margin: 20px 0; font-size: .9375rem; }

/* Anuncios (solo se muestran si ads.js los activa) */
.ad-slot { margin: 28px 0; min-height: 100px; text-align: center; }
.ad-slot[hidden] { display: none; }
.ad-label { display: block; font-size: .75rem; color: var(--text-2); margin-bottom: 4px; }

.consent {
  position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 20;
  max-width: 34rem; margin: 0 auto; background: var(--surface); color: var(--text);
  border: 1px solid var(--line); border-radius: 16px; padding: 16px; box-shadow: 0 8px 32px rgba(0, 0, 0, .25);
}
.consent p { margin: 0 0 12px; font-size: .9375rem; }
.consent-actions { display: flex; gap: 8px; }
.consent-actions .btn { flex: 1; }
.btn-primary { background: var(--accent); color: var(--on-accent); }

@media (max-width: 420px) {
  .card { padding: 18px; }
  .filters { grid-template-columns: 1fr; }
}

@media (prefers-reduced-transparency: reduce) {
  .toolbar { background: var(--surface); }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

@media (forced-colors: active) {
  .segmented button[aria-selected="true"] { outline: 2px solid Highlight; }
  .balance-mutual { background: Highlight; }
}