/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #0f0d0b;
  --bg-soft: #17140f;
  --card: #1d1811;
  --card-2: #241e15;
  --border: #362c1e;
  --tx: #f3ede3;
  --mu: #b3a691;
  --mu-2: #7d7261;
  --accent: #e0964d;
  --accent-2: #f2b877;
  --accent-ink: #1a1005;
  --ok: #4caf7d;
  --ok-bg: rgba(76, 175, 125, .12);
  --warn: #e0b34d;
  --warn-bg: rgba(224, 179, 77, .14);
  --danger: #e0684d;
  --danger-bg: rgba(224, 104, 77, .12);
  --cream: #f3ede3;

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Fraunces", Georgia, serif;

  --radius: 16px;
  --radius-sm: 10px;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #faf6ef;
    --bg-soft: #f2ece1;
    --card: #ffffff;
    --card-2: #f5f0e7;
    --border: #e6ddcc;
    --tx: #211a10;
    --mu: #5c5343;
    --mu-2: #8a8071;
    --accent: #c9722c;
    --accent-2: #a85d20;
    --accent-ink: #ffffff;
    --ok: #237a52;
    --ok-bg: rgba(35, 122, 82, .1);
    --warn: #9c6c11;
    --warn-bg: rgba(156, 108, 17, .12);
    --danger: #b8402a;
    --danger-bg: rgba(184, 64, 42, .1);
    --cream: #211a10;
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--tx);
  -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, h3, h4 { text-wrap: balance; line-height: 1.08; letter-spacing: -0.01em; font-family: var(--serif); font-weight: 600; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--accent); color: var(--accent-ink);
  z-index: 9999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: 1120px; margin: 0 auto; padding-inline: var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.mu { color: var(--mu); }
.center { text-align: center; }
.stack { display: flex; flex-direction: column; gap: 1rem; }
.row { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }

/* =============================================================
   4. Buttons & form controls
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .8rem 1.4rem; border-radius: 999px; font-weight: 600; font-size: .95rem;
  transition: transform .2s var(--ease-out), background .2s var(--ease-out), opacity .2s var(--ease-out);
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-2); transform: translateY(-1px); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--tx); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-block { width: 100%; }
.btn-sm { padding: .55rem 1rem; font-size: .85rem; }

input[type="text"], input[type="email"], input[type="password"], textarea, select {
  width: 100%; padding: .75rem .9rem; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--card-2); color: var(--tx); font: inherit;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
label { font-size: .85rem; color: var(--mu); display: block; margin-bottom: .35rem; }
.field { margin-bottom: 1rem; }

/* =============================================================
   5. Components
   ============================================================= */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }

.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .3rem .7rem; border-radius: 999px; font-size: .78rem; font-weight: 700;
  letter-spacing: .02em; text-transform: uppercase;
}
.badge-demo { background: var(--warn-bg); color: var(--warn); }
.badge-ok { background: var(--ok-bg); color: var(--ok); }

.pill {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .4rem .85rem; border-radius: 999px; background: var(--card-2);
  border: 1px solid var(--border); font-size: .85rem; font-weight: 600;
}
.pill-credits { color: var(--accent-2); }

.nav {
  position: sticky; top: 0; z-index: 50;
  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; padding-block: 1rem; }
.logo { font-family: var(--serif); font-size: 1.35rem; font-weight: 700; display: flex; align-items: center; gap: .5rem; }
.logo svg { width: 26px; height: 26px; }
.nav-links { display: none; gap: 1.75rem; font-size: .95rem; color: var(--mu); }
.nav-links a:hover { color: var(--tx); }

@media (min-width: 720px) { .nav-links { display: flex; } }

/* ---- ad slot ---- */
.ad-slot {
  border: 1px dashed var(--border); border-radius: var(--radius-sm);
  background: var(--card-2); color: var(--mu-2);
  display: flex; align-items: center; justify-content: center;
  font-size: .78rem; text-align: center; padding: .75rem;
  min-height: 90px;
}
.ad-slot[data-size="leaderboard"] { min-height: 90px; }
.ad-slot[data-size="rectangle"] { min-height: 250px; max-width: 336px; margin-inline: auto; }
.ad-slot[data-size="banner"] { min-height: 60px; }

/* =============================================================
   6. Sections — landing
   ============================================================= */
.hero {
  padding-block: clamp(3rem, 8vw, 6rem) clamp(2rem, 6vw, 4rem);
  display: grid; gap: 3rem;
}
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); margin-bottom: 1rem; }
.hero p.lead { font-size: 1.15rem; color: var(--mu); max-width: 46ch; margin-bottom: 1.75rem; }

.compare {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); aspect-ratio: 4/3; cursor: ew-resize; user-select: none;
  background: var(--card-2);
}
.compare img, .compare > svg, .compare .after-wrap svg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.compare .after-wrap { clip-path: inset(0 0 0 50%); }
.compare .handle {
  position: absolute; top: 0; bottom: 0; left: 50%; width: 3px; background: var(--cream);
  transform: translateX(-50%); box-shadow: 0 0 0 1px rgba(0,0,0,.2);
}
.compare .handle::after {
  content: "⇔"; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 40px; height: 40px; border-radius: 50%; background: var(--cream); color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem; font-weight: 700;
}
.compare .tag { position: absolute; bottom: .75rem; font-size: .75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .05em; padding: .3rem .6rem; border-radius: 999px; background: rgba(0,0,0,.55); color: #fff; }
.compare .tag.before { left: .75rem; } .compare .tag.after { right: .75rem; }

.before-after { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.before-after figure { position: relative; margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); aspect-ratio: 3/4; background: var(--card-2); }
.before-after img { width: 100%; height: 100%; object-fit: cover; display: block; }
.before-after figcaption { position: absolute; bottom: .6rem; left: .6rem; font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .05em; padding: .3rem .6rem; border-radius: 999px;
  background: rgba(0,0,0,.55); color: #fff; }

@media (min-width: 960px) { .hero { grid-template-columns: 1fr 1fr; align-items: center; } }

.section { padding-block: clamp(3rem, 6vw, 5rem); border-top: 1px solid var(--border); }
.section-head { max-width: 60ch; margin-bottom: 2.5rem; }
.section-head h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); margin-bottom: .6rem; }

.features { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .features { grid-template-columns: repeat(2, 1fr); } }
.feature-card { padding: 1.75rem; }
.feature-card .icon {
  width: 46px; height: 46px; border-radius: 12px; background: var(--card-2);
  display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; color: var(--accent);
}
.feature-card h3 { font-size: 1.15rem; margin-bottom: .5rem; }

.steps { display: grid; gap: 1.5rem; grid-template-columns: 1fr; counter-reset: step; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { position: relative; padding-top: 2.5rem; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: 0; left: 0; width: 2.25rem; height: 2.25rem; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-family: var(--serif);
}

/* pricing */
.pricing-grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 860px) { .pricing-grid { grid-template-columns: repeat(3, 1fr); } }
.plan-card { padding: 1.75rem; display: flex; flex-direction: column; gap: 1rem; position: relative; }
.plan-card.featured {
  border: 2px solid var(--accent);
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent) 16%, var(--card)) 0%, var(--card) 60%);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent), 0 16px 40px -12px color-mix(in srgb, var(--accent) 55%, transparent);
  transform: scale(1.02);
}
.plan-card.featured::before {
  content: "✨ Más elegido"; position: absolute; top: -.7rem; right: 1.25rem;
  background: var(--accent); color: var(--accent-ink); font-size: .7rem; font-weight: 700;
  padding: .25rem .6rem; border-radius: 999px; text-transform: uppercase; letter-spacing: .04em;
}

/* Botón/CTA "llamativo" para incitar a pasarse a Pro */
.btn-plan-llamativo {
  background: linear-gradient(135deg, var(--accent-2), var(--accent) 60%, var(--warn));
  color: var(--accent-ink); box-shadow: 0 6px 20px -6px color-mix(in srgb, var(--accent) 70%, transparent);
  animation: pulso-llamativo 2.2s ease-in-out infinite;
}
.btn-plan-llamativo:hover { filter: brightness(1.08); }
@keyframes pulso-llamativo {
  0%, 100% { box-shadow: 0 6px 20px -6px color-mix(in srgb, var(--accent) 70%, transparent); }
  50% { box-shadow: 0 6px 28px -4px color-mix(in srgb, var(--accent) 95%, transparent); }
}
@media (prefers-reduced-motion: reduce) { .btn-plan-llamativo { animation: none; } }
.plan-card .price { font-family: var(--serif); font-size: 2.2rem; }
.plan-card .price small { font-family: var(--sans); font-size: .9rem; color: var(--mu); font-weight: 500; }
.plan-card ul { list-style: none; display: flex; flex-direction: column; gap: .5rem; font-size: .92rem; color: var(--mu); }
.plan-card li::before { content: "✓ "; color: var(--ok); font-weight: 700; }

.faq-item { padding-block: 1.1rem; border-bottom: 1px solid var(--border); }
.faq-item summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--accent); font-size: 1.3rem; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { margin-top: .6rem; color: var(--mu); }

footer { border-top: 1px solid var(--border); padding-block: 2.5rem; margin-top: 2rem; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.5rem; }
.footer-links { display: flex; gap: 1.25rem; flex-wrap: wrap; font-size: .9rem; color: var(--mu); }
.footer-links a:hover { color: var(--tx); }

/* =============================================================
   7. App shell (app.html / cuenta.html)
   ============================================================= */
body.app-body { background: var(--bg-soft); }
.app-top {
  position: sticky; top: 0; z-index: 40; background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.app-top-inner { display: flex; align-items: center; justify-content: space-between; padding-block: .85rem; gap: 1rem; }
.demo-banner {
  background: var(--warn-bg); color: var(--warn); text-align: center; font-size: .82rem; font-weight: 600;
  padding: .5rem 1rem;
}
.account-menu { position: relative; }
.account-btn {
  width: 38px; height: 38px; border-radius: 50%; background: var(--card-2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--accent-2);
}
.account-dropdown {
  position: absolute; right: 0; top: calc(100% + .5rem); background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); min-width: 190px; padding: .4rem; display: none; flex-direction: column;
  box-shadow: 0 12px 32px rgba(0,0,0,.35);
}
.account-dropdown.open { display: flex; }
.account-dropdown a, .account-dropdown button {
  padding: .6rem .7rem; border-radius: 8px; text-align: left; font-size: .9rem;
}
.account-dropdown a:hover, .account-dropdown button:hover { background: var(--card-2); }

.app-main { padding-block: 2rem 4rem; }

.tabs { display: flex; gap: .5rem; margin-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.tab-btn { padding: .75rem 1.1rem; font-weight: 600; color: var(--mu); border-bottom: 2px solid transparent; }
.tab-btn.active { color: var(--tx); border-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.tool-grid { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 960px) { .tool-grid { grid-template-columns: 1.1fr .9fr; } }

.dropzone {
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 2.5rem 1.5rem;
  text-align: center; color: var(--mu); transition: border-color .2s var(--ease-out), background .2s var(--ease-out);
  cursor: pointer;
}
.dropzone.drag { border-color: var(--accent); background: var(--card-2); }
.dropzone svg { width: 40px; height: 40px; margin: 0 auto 1rem; color: var(--accent); }

.canvas-wrap { position: relative; border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--border); }
.canvas-wrap canvas { display: block; width: 100%; height: auto; touch-action: none; }
.brush-controls { display: flex; align-items: center; gap: .75rem; margin-top: .75rem; flex-wrap: wrap; }
.brush-controls input[type="range"] { width: 140px; }

.result-slider { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); min-height: 220px;
  display: flex; align-items: center; justify-content: center; color: var(--mu-2); font-size: .9rem; }

[data-state="idle"] .only-working, [data-state="idle"] .only-done, [data-state="idle"] .only-error { display: none; }
[data-state="working"] .only-idle, [data-state="working"] .only-done, [data-state="working"] .only-error { display: none; }
[data-state="done"] .only-idle, [data-state="done"] .only-working, [data-state="done"] .only-error { display: none; }
[data-state="error"] .only-idle, [data-state="error"] .only-working, [data-state="error"] .only-done { display: none; }

.spinner {
  width: 22px; height: 22px; border-radius: 50%; border: 3px solid var(--border);
  border-top-color: var(--accent); animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.cost-line { display: flex; justify-content: space-between; align-items: center; padding: .85rem 1rem;
  border-radius: var(--radius-sm); background: var(--card-2); font-size: .9rem; margin-block: 1rem; }

.toast-stack { position: fixed; bottom: 1.25rem; right: 1.25rem; display: flex; flex-direction: column; gap: .6rem; z-index: 999; max-width: min(360px, 90vw); }
.toast { padding: .85rem 1rem; border-radius: var(--radius-sm); background: var(--card); border: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(0,0,0,.3); font-size: .9rem; animation: toast-in .25s var(--ease-out); }
.toast.err { border-color: var(--danger); color: var(--danger); }
.toast.ok { border-color: var(--ok); color: var(--ok); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* modal */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(10,8,5,.6); display: none;
  align-items: center; justify-content: center; z-index: 200; padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.75rem; max-width: 420px; width: 100%; max-height: 90vh; overflow-y: auto; }
.modal h2 { font-size: 1.3rem; margin-bottom: .3rem; }
.modal .close { position: absolute; }
.modal-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; }

/* history table */
.table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table th, .table td { text-align: left; padding: .7rem .5rem; border-bottom: 1px solid var(--border); color: var(--mu); }
.table th { color: var(--mu-2); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; }

/* =============================================================
   8. Responsive
   ============================================================= */
@media (min-width: 540px) {}
@media (min-width: 720px) {}
@media (min-width: 960px) {}
@media (min-width: 1280px) {}

/* =============================================================
   9. Reduced motion
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .spinner { animation-duration: 1.6s; }
}