/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #f7f7f4;
  --surface: #ffffff;
  --ink: #1c1e1b;
  --ink-soft: #55584f;
  --accent: #2f6f4f;
  --accent-ink: #ffffff;
  --line: #e2e1d8;
  --warn-bg: #fff6e0;
  --warn-ink: #6b4e00;
  --error-bg: #fdeceb;
  --error-ink: #8a2116;
  --radius: 14px;
  --sans: "Inter", system-ui, sans-serif;
  --display: "Manrope", var(--sans);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14160f;
    --surface: #1d201a;
    --ink: #f2f1ea;
    --ink-soft: #b7bab0;
    --accent: #5fb885;
    --accent-ink: #0c1a12;
    --line: #333527;
    --warn-bg: #33290a;
    --warn-ink: #ffd479;
    --error-bg: #3a1512;
    --error-ink: #ff9d90;
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3 { font-family: var(--display); text-wrap: balance; line-height: 1.15; letter-spacing: -0.01em; }
p { text-wrap: pretty; }
a { color: var(--accent); }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: 760px; margin-inline: auto; padding-inline: 1.25rem; }
.skip-link {
  position: fixed; top: -100px; left: 1rem; padding: .6rem 1rem;
  background: var(--surface); color: var(--ink); z-index: 999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   4. Header / footer
   ============================================================= */
.site-header { border-bottom: 1px solid var(--line); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; padding-block: 1rem; }
.brand-mark { font-family: var(--display); font-weight: 800; font-size: 1.05rem; }
.site-header nav a, .site-footer nav a { color: var(--ink-soft); text-decoration: none; font-size: .9rem; }
.site-footer { border-top: 1px solid var(--line); margin-top: 3rem; padding-block: 1.5rem; color: var(--ink-soft); font-size: .85rem; }
.site-footer .container { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; align-items: center; justify-content: space-between; }
.site-footer nav { display: flex; gap: 1rem; }

/* =============================================================
   5. Hero + tool card
   ============================================================= */
.hero { padding-block: 2rem 1rem; }
.hero h1 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.3rem); }
.hero-subtitle { color: var(--ink-soft); margin-top: .6rem; max-width: 56ch; }

.tool-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
}

.grupo { border: 0; padding: 0; display: grid; gap: .8rem; }
.grupo legend { font-weight: 700; font-family: var(--display); margin-bottom: .2rem; padding: 0; }
.grupo--details { border-top: 1px solid var(--line); padding-top: .9rem; }
.grupo--details summary { cursor: pointer; font-weight: 600; padding: .3rem 0; }
.grupo--details[open] summary { margin-bottom: .5rem; }

.campo { display: grid; gap: .3rem; }
.campo label { font-size: .88rem; font-weight: 500; color: var(--ink-soft); }
.campo--checkbox label { display: flex; align-items: center; gap: .5rem; font-weight: 500; color: var(--ink); }
.campo input[type="text"], .campo input[type="number"], .campo select {
  font: inherit; padding: .6rem .7rem; border-radius: 9px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); width: 100%;
}
.campo input:focus-visible, .campo select:focus-visible { border-color: var(--accent); }

.sub-lista { display: grid; gap: .5rem; }
.sub-lista > p { font-weight: 600; font-size: .88rem; color: var(--ink-soft); }
.sub-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: .6rem .9rem;
  border: 1px dashed var(--line); border-radius: 9px; padding: .6rem .8rem; font-size: .9rem;
}
.sub-row label { display: flex; align-items: center; gap: .4rem; }
.btn-quitar {
  margin-left: auto; border: 0; background: var(--error-bg); color: var(--error-ink);
  width: 1.6rem; height: 1.6rem; border-radius: 50%; font-size: 1rem; line-height: 1; cursor: pointer;
}

.btn {
  font: inherit; font-weight: 700; border: 0; border-radius: 999px; padding: .85rem 1.4rem;
  cursor: pointer; transition: transform .15s var(--ease-out), background .15s var(--ease-out);
}
.btn:hover { transform: translateY(-1px); }
.btn-primario { background: var(--accent); color: var(--accent-ink); font-size: 1rem; justify-self: start; }
.btn-secundario { background: transparent; border: 1px solid var(--line); color: var(--ink); }
.btn-pequeno { padding: .45rem .9rem; font-size: .85rem; }

.privacidad-badge { font-size: .85rem; color: var(--ink-soft); }
.limites { font-size: .78rem; color: var(--ink-soft); }

/* =============================================================
   6. Resultado
   ============================================================= */
.resultado h2 { margin-bottom: .4rem; }
.resultado h3 { margin-top: 1rem; margin-bottom: .4rem; font-size: 1.05rem; }
.resultado-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .7rem; margin-top: .8rem; }
.resultado-tile {
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: .8rem;
  display: grid; gap: .3rem;
}
.resultado-tile span { font-size: .78rem; color: var(--ink-soft); }
.resultado-tile strong { font-size: 1.15rem; font-family: var(--display); }
.resultado-tile--big { grid-column: 1 / -1; }
.resultado-tile--big strong { font-size: 1.6rem; }

.tabla-desglose { width: 100%; border-collapse: collapse; font-size: .9rem; }
.tabla-desglose td { padding: .45rem .2rem; border-bottom: 1px solid var(--line); }
.tabla-desglose td:last-child { text-align: right; white-space: nowrap; }

.aviso { border-radius: 10px; padding: .7rem .9rem; font-size: .85rem; margin-top: .6rem; }
.aviso-warn { background: var(--warn-bg); color: var(--warn-ink); }
.aviso-error { background: var(--error-bg); color: var(--error-ink); }
.aviso-legal { color: var(--ink-soft); }

/* =============================================================
   7. Ad slots
   ============================================================= */
.espacio-reservado {
  min-height: 90px; border: 1px dashed var(--line); border-radius: 10px;
  background: var(--surface);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .25rem;
  color: var(--ink-soft); font-size: .78rem; margin-block: 1.5rem;
  overflow: hidden;
}
.espacio-reservado::before {
  content: "Espacio publicitario"; text-transform: uppercase; letter-spacing: .06em;
  font-size: .68rem; font-weight: 700; color: var(--ink-soft); opacity: .7;
}
.espacio-reservado--cabecera { margin-block: 1rem 0; min-height: 70px; }
@media (min-width: 720px) { .espacio-reservado--cabecera { min-height: 90px; } }
.espacio-reservado__medida { font-size: .68rem; opacity: .55; }

/* =============================================================
   8. SEO / content section
   ============================================================= */
.seccion-info { padding-block: 1.5rem 2.5rem; display: grid; gap: 1rem; }
.seccion-info h2 { font-size: 1.25rem; margin-top: .5rem; }
.seccion-info p { color: var(--ink-soft); }
.pasos { display: grid; gap: .6rem; padding-left: 1.1rem; }
.seccion-info details { border-bottom: 1px solid var(--line); padding-block: .6rem; }
.seccion-info details summary { cursor: pointer; font-weight: 600; }
.seccion-info details p { margin-top: .4rem; }

/* =============================================================
   9. Responsive
   ============================================================= */
@media (min-width: 720px) {
  .tool-card { padding: 1.75rem; }
  .grupo { grid-template-columns: 1fr 1fr; }
  .grupo legend { grid-column: 1 / -1; }
}

/* =============================================================
   10. Reduced motion
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}