/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #faf9fd;
  --surface: #ffffff;
  --surface-2: #f4f2fb;
  --border: #e9e6f5;
  --text: #1c1c26;
  --text-mu: #6f6f81;
  --accent: #5b5bd6;
  --accent-ink: #ffffff;
  --accent-soft: #ecebfb;
  --accent-warm: #ffd9a8;
  --ink-btn: #1c1c26;
  --ink-btn-ink: #ffffff;
  --ok: #1f9d5a;
  --ok-soft: #e6f7ee;
  --warn: #b4790a;
  --warn-soft: #fdf1dc;
  --danger: #d64545;
  --danger-soft: #fde9e9;
  --amber: #fff3cd;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(40,30,80,.04), 0 14px 32px rgba(91,91,214,.10);
  --serif: "Instrument Serif", ui-serif, Georgia, serif;
  --sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --nav-h: 72px;
}

/* Modo oscuro: solo se activa si la persona lo elige con el botón de tema
   (guardado en localStorage) — nunca automáticamente según el sistema, para
   que el color siempre sea el de la opción B elegida a menos que alguien
   pida explícitamente el modo oscuro. */
:root[data-theme="dark"] {
  --bg: #131019;
  --surface: #1a1826;
  --surface-2: #201c30;
  --border: #2d2942;
  --text: #f1eef9;
  --text-mu: #a9a4bf;
  --accent: #8a8af0;
  --accent-ink: #14121f;
  --accent-soft: #26234a;
  --accent-warm: #4a3a2c;
  --ink-btn: #f1eef9;
  --ink-btn-ink: #14121f;
  --ok-soft: #12301f;
  --warn-soft: #322209;
  --danger-soft: #391414;
  --amber: #3a2e0c;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 16px 34px rgba(0,0,0,.4);
}
:root[data-theme="dark"] .btn-primary { box-shadow: 0 6px 18px rgba(0,0,0,.4); }
:root[data-theme="dark"] .btn-primary:hover { box-shadow: 0 10px 26px rgba(0,0,0,.5); }

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; overflow-x: clip; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2 { text-wrap: balance; line-height: 1.04; letter-spacing: -0.01em; font-family: var(--serif); font-weight: 400; font-style: italic; }
h3, h4 { text-wrap: balance; line-height: 1.2; letter-spacing: -0.01em; font-family: var(--sans); font-weight: 700; }
ul { list-style: none; padding: 0; }
input, textarea, select { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* =============================================================
   3. Utilities
   ============================================================= */
[hidden] { display: none !important; }
.container { width: min(1120px, 100% - 3rem); margin-inline: auto; }
.container-narrow { width: min(760px, 100% - 3rem); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--surface); color: var(--text);
  z-index: 9999; border-radius: 8px; font-weight: 600; box-shadow: var(--shadow);
}
.skip-link:focus { top: 1rem; }
.pill {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .35rem .8rem; border-radius: 999px; font-size: .82rem; font-weight: 600;
  background: var(--accent-soft); color: var(--accent);
}
.badge-demo {
  display: inline-flex; align-items: center; gap: .4rem;
  background: var(--warn-soft); color: var(--warn);
  border: 1px solid rgba(180,121,10,.25);
  padding: .5rem .9rem; border-radius: var(--radius-sm);
  font-size: .85rem; font-weight: 600;
}
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease-out), transform .7s var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* =============================================================
   4. Typography
   ============================================================= */
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.25rem; }
.eyebrow { font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.lead { font-size: 1.15rem; color: var(--text-mu); }
.muted { color: var(--text-mu); }

/* =============================================================
   5. Components
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .85rem 1.5rem; border-radius: 999px; font-weight: 600; font-size: .96rem;
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), background .2s;
  white-space: nowrap;
}
.btn-primary { background: var(--ink-btn); color: var(--ink-btn-ink); box-shadow: 0 6px 18px rgba(28,28,38,.22); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(28,28,38,.28); }
.btn-ghost { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger-soft); color: var(--danger); }
.btn-sm { padding: .55rem 1rem; font-size: .85rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; pointer-events: none; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.field { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1rem; text-align: left; }
.field label { font-size: .85rem; font-weight: 600; color: var(--text-mu); }
.field input, .field select {
  padding: .8rem .9rem; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--surface); color: var(--text);
}
.field input:focus, .field select:focus { border-color: var(--accent); }

.toast-stack {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 200;
  display: flex; flex-direction: column; gap: .6rem; max-width: min(360px, 90vw);
}
.toast {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow); padding: .85rem 1rem; font-size: .9rem;
  display: flex; align-items: center; gap: .6rem;
  animation: toastIn .3s var(--ease-out);
}
.toast.is-error { border-color: rgba(214,69,69,.4); background: var(--danger-soft); }
.toast.is-ok { border-color: rgba(31,157,90,.35); background: var(--ok-soft); }
@keyframes toastIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

dialog {
  border: none; border-radius: var(--radius); padding: 0; max-width: min(480px, 92vw);
  width: 100%; box-shadow: var(--shadow); background: var(--surface); color: var(--text);
}
dialog::backdrop { background: rgba(10,12,16,.5); backdrop-filter: blur(2px); }
.modal-body { padding: 1.75rem; }
.modal-close { position: absolute; top: 1rem; right: 1.1rem; font-size: 1.3rem; color: var(--text-mu); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 100; height: var(--nav-h);
  display: flex; align-items: center;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.logo { display: flex; align-items: center; gap: .55rem; font-family: var(--serif); font-style: italic; font-weight: 400; font-size: 1.3rem; }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px; background: var(--accent); color: var(--accent-ink);
  display: grid; place-items: center; font-family: var(--sans); font-weight: 800; font-size: .95rem;
}
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a { font-size: .92rem; font-weight: 600; color: var(--text-mu); transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: .7rem; }
.nav-utils { display: flex; align-items: center; gap: .4rem; }
.theme-toggle {
  width: 34px; height: 34px; border-radius: 999px; display: grid; place-items: center;
  background: var(--surface); border: 1px solid var(--border); font-size: 1rem; line-height: 1;
  transition: border-color .2s;
}
.theme-toggle:hover { border-color: var(--accent); }
.lang-switch {
  display: inline-flex; align-items: center; background: var(--surface);
  border: 1px solid var(--border); border-radius: 999px; padding: .2rem;
}
.lang-btn {
  padding: .3rem .6rem; border-radius: 999px; font-size: .76rem; font-weight: 700;
  letter-spacing: .03em; color: var(--text-mu); transition: background .2s, color .2s;
}
.lang-btn.is-active { background: var(--accent); color: var(--accent-ink); }
.nav-credits {
  display: inline-flex; align-items: center; gap: .4rem; font-weight: 700; font-size: .9rem;
  background: var(--accent-soft); color: var(--accent); padding: .5rem .85rem; border-radius: 999px;
}
.nav-credits.is-low { background: var(--danger-soft); color: var(--danger); }

/* Hero */
.hero { position: relative; padding: clamp(3rem, 8vw, 6.5rem) 0 clamp(2.5rem, 6vw, 4rem); overflow: clip; }
.hero::before, .hero::after {
  content: ""; position: absolute; z-index: 0; border-radius: 50%; pointer-events: none; filter: blur(2px);
}
.hero::before { top: -22%; right: -8%; width: 46%; height: 60%; background: radial-gradient(circle, color-mix(in srgb, var(--accent) 30%, transparent), transparent 72%); }
.hero::after { left: -14%; bottom: -32%; width: 40%; height: 55%; background: radial-gradient(circle, color-mix(in srgb, var(--accent-warm) 55%, transparent), transparent 72%); }
.hero-grid { position: relative; z-index: 1; display: grid; gap: 3rem; align-items: center; }
.hero-title { max-width: 15ch; }
.hero-cta { display: flex; gap: .9rem; margin-top: 1.8rem; flex-wrap: wrap; }
.hero-trust { margin-top: 1.4rem; font-size: .85rem; color: var(--text-mu); }

.hero-demo { }
.demo-card { padding: 1.5rem; box-shadow: 0 12px 34px color-mix(in srgb, var(--accent) 16%, transparent); }
.demo-row { display: flex; align-items: center; gap: 1rem; }
.demo-arrow { color: var(--accent); font-size: 1.4rem; flex-shrink: 0; }
.demo-box { flex: 1; border-radius: var(--radius-sm); padding: 1rem; background: var(--surface-2); border: 1px solid var(--border); }
.demo-box h4 { font-family: var(--sans); font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 700; color: var(--text-mu); margin-bottom: .5rem; }
.demo-box p { font-size: .95rem; }
.mini-table { width: 100%; font-size: .78rem; border-collapse: collapse; margin-top: .4rem; }
.mini-table th, .mini-table td { border-bottom: 1px solid var(--border); padding: .35rem .3rem; text-align: left; }
.mini-table th { color: var(--text-mu); font-weight: 600; }
.mini-table tr:last-child td { color: var(--accent); font-weight: 700; }

/* Steps */
.steps { display: grid; gap: 1.5rem; margin-top: 2.5rem; }
.step-card { padding: 1.6rem; text-align: left; }
.step-num {
  width: 38px; height: 38px; border-radius: 999px; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-weight: 800; margin-bottom: 1rem;
}

/* Section */
.section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.section-head { max-width: 640px; margin-bottom: 2.5rem; }
.section-alt { background: var(--surface-2); }

/* Pricing */
.pricing-grid { display: grid; gap: 1.5rem; align-items: start; }
.plan-card { padding: 2rem; display: flex; flex-direction: column; gap: 1.1rem; position: relative; }
.plan-card.is-featured { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent), var(--shadow); }
.plan-featured-tag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: var(--accent-ink); font-size: .75rem; font-weight: 700;
  padding: .3rem .8rem; border-radius: 999px;
}
.plan-price { display: flex; align-items: baseline; gap: .3rem; }
.plan-price strong { font-family: var(--sans); font-weight: 800; font-size: 2.3rem; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.plan-price span { color: var(--text-mu); font-size: .9rem; }
.plan-items { display: flex; flex-direction: column; gap: .6rem; }
.plan-items li { display: flex; gap: .55rem; font-size: .92rem; align-items: flex-start; }
.plan-items li::before { content: "✓"; color: var(--ok); font-weight: 800; flex-shrink: 0; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 0; font-weight: 600; text-align: left; font-size: 1.02rem;
}
.faq-q .chev { transition: transform .3s var(--ease-out); color: var(--accent); flex-shrink: 0; margin-left: 1rem; }
.faq-item.is-open .faq-q .chev { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s var(--ease-out); color: var(--text-mu); }
.faq-a p { padding-bottom: 1.25rem; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 2.5rem 0; }
.footer-grid { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1.5rem; font-size: .88rem; color: var(--text-mu); }
.footer-links { display: flex; gap: 1.3rem; flex-wrap: wrap; }

/* App shell */
.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.app-main { flex: 1; padding: 2rem 0 4rem; }
.app-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.8rem; flex-wrap: wrap; gap: 1rem; }

.dropzone {
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 2.6rem 1.5rem;
  text-align: center; transition: border-color .2s, background .2s; cursor: pointer;
}
.dropzone:hover, .dropzone.is-drag { border-color: var(--accent); background: var(--accent-soft); }
.dropzone[data-state="uploading"], .dropzone[data-state="working"] { opacity: .7; pointer-events: none; }
.dropzone-icon { font-size: 2rem; margin-bottom: .6rem; }

.queue { margin-top: 1.6rem; display: flex; flex-direction: column; gap: .6rem; }
.queue-item {
  display: flex; align-items: center; gap: .8rem; padding: .8rem 1rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface);
  font-size: .9rem;
}
.queue-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.queue-status { font-size: .8rem; font-weight: 700; padding: .25rem .6rem; border-radius: 999px; flex-shrink: 0; }
.queue-status.st-espera { background: var(--surface-2); color: var(--text-mu); }
.queue-status.st-subiendo, .queue-status.st-procesando { background: var(--accent-soft); color: var(--accent); }
.queue-status.st-listo { background: var(--ok-soft); color: var(--ok); }
.queue-status.st-error { background: var(--danger-soft); color: var(--danger); }

.results-wrap { margin-top: 2rem; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.results-table { min-width: 900px; font-size: .87rem; }
.results-table th, .results-table td { padding: .65rem .7rem; border-bottom: 1px solid var(--border); text-align: left; }
.results-table thead th { background: var(--surface-2); font-weight: 700; position: sticky; top: 0; }
.results-table td[contenteditable="true"] { cursor: text; border-radius: 6px; }
.results-table td[contenteditable="true"]:focus { outline: 2px solid var(--accent); outline-offset: -2px; background: var(--accent-soft); }
.results-table td.is-low-conf { background: var(--amber); }
.results-table td.is-mismatch { background: var(--danger-soft); }
.results-table tr.is-total td { font-weight: 700; background: var(--surface-2); }
.row-del { color: var(--text-mu); }
.row-del:hover { color: var(--danger); }

.export-bar { display: flex; gap: .8rem; margin-top: 1.4rem; flex-wrap: wrap; align-items: center; }

.cost-hint { font-size: .85rem; color: var(--text-mu); margin-top: .8rem; }

/* Auth / upgrade modal */
.plan-choice { display: flex; flex-direction: column; gap: .7rem; margin: 1.2rem 0; }
.plan-choice label {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: .9rem 1rem; cursor: pointer;
}
.plan-choice input:checked + span, .plan-choice label:has(input:checked) { border-color: var(--accent); }
.plan-choice label:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.fake-card { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: .9rem 1rem; font-family: var(--mono); color: var(--text-mu); margin: 1rem 0; }

.account-grid { display: grid; gap: 1.4rem; }
.stat-card { padding: 1.4rem; }
.stat-card .num { font-family: var(--sans); font-weight: 800; font-size: 2rem; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.history-table { font-size: .88rem; }
.history-table th, .history-table td { padding: .6rem .5rem; border-bottom: 1px solid var(--border); text-align: left; }

/* =============================================================
   6. Sections spacing helpers
   ============================================================= */
.stack-lg > * + * { margin-top: 1.4rem; }
.center { text-align: center; }
.mx-auto { margin-inline: auto; }

/* =============================================================
   7. Effects
   ============================================================= */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid var(--border);
  border-top-color: var(--accent); animation: spin .7s linear infinite; flex-shrink: 0;
}

/* =============================================================
   8. Responsive
   ============================================================= */
@media (min-width: 720px) {
  .hero-grid { grid-template-columns: 1.05fr .95fr; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
  .account-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 960px) {
  .nav-links { display: flex; }
}
@media (max-width: 959px) {
  .nav-links { display: none; }
}
@media (max-width: 640px) {
  .nav-actions { gap: .4rem; }
  .nav-utils { gap: .25rem; }
  .theme-toggle { width: 30px; height: 30px; font-size: .9rem; }
  .lang-btn { padding: .25rem .45rem; font-size: .7rem; }
  [data-open-login] { display: none; }
}
@media (max-width: 480px) {
  .logo-text { display: none; }
  .nav { height: auto; padding: .55rem 0; }
  .nav-inner { flex-wrap: wrap; row-gap: .5rem; }
  .nav-actions { flex-wrap: wrap; justify-content: flex-end; row-gap: .5rem; }
}

/* =============================================================
   9. Reduced motion (only intrusive)
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .spinner { animation-duration: 1.4s; }
}