:root {
  --paper: #f2f4f7;
  --paper-2: #ffffff;
  --ink: #152436;
  --ink-soft: #55627a;
  --ink-faint: #8590a3;
  --line: #d9dee6;
  --line-soft: #e8ebf0;
  --primary: #1d5085;
  --primary-2: #2e6ab4;
  --primary-soft: #e4edf8;
  --accent: #a9752c;
  --accent-soft: #f4e8d3;
  --good: #1f7a4d;
  --good-soft: #e1f3e8;
  --warn: #9a5b12;
  --warn-soft: #fbeedb;
  --bad: #a33d3d;
  --bad-soft: #f9e8e8;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(21,36,54,0.06), 0 8px 24px -12px rgba(21,36,54,0.18);
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #12181f;
    --paper-2: #1a222c;
    --ink: #eaeef3;
    --ink-soft: #a7b2c2;
    --ink-faint: #71798a;
    --line: #2b3644;
    --line-soft: #232c38;
    --primary: #7fb0e6;
    --primary-2: #a9cdf2;
    --primary-soft: #16283b;
    --accent: #d9ac67;
    --accent-soft: #332a1a;
    --good: #6fce9c;
    --good-soft: #16281f;
    --warn: #e3b673;
    --warn-soft: #332811;
    --bad: #e39191;
    --bad-soft: #33201f;
    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px -12px rgba(0,0,0,0.5);
  }
}
:root[data-theme="dark"] {
  --paper: #12181f;
  --paper-2: #1a222c;
  --ink: #eaeef3;
  --ink-soft: #a7b2c2;
  --ink-faint: #71798a;
  --line: #2b3644;
  --line-soft: #232c38;
  --primary: #7fb0e6;
  --primary-2: #a9cdf2;
  --primary-soft: #16283b;
  --accent: #d9ac67;
  --accent-soft: #332a1a;
  --good: #6fce9c;
  --good-soft: #16281f;
  --warn: #e3b673;
  --warn-soft: #332811;
  --bad: #e39191;
  --bad-soft: #33201f;
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px -12px rgba(0,0,0,0.5);
}

* { box-sizing: border-box; }

/* Corrige un bug pre-existente: algunas reglas de abajo (p. ej. .resultado-item,
   con display:flex) anulaban el atributo "hidden" de sus elementos porque, en
   CSS, cualquier regla de autor gana siempre a la regla por defecto del
   navegador para [hidden], sea cual sea su especificidad. Sin esta línea, la
   tarjeta de IVA se quedaba visible aunque el vendedor fuera un particular. */
[hidden] { display: none !important; }

html { background: var(--paper); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 920px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { padding: 28px 0 8px; }
.header-top,
header.top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark { width: 56px; height: 56px; flex-shrink: 0; }
.brand-mark img { width: 100%; height: 100%; display: block; }
.brand-text { display: flex; flex-direction: column; }
.back-link { font-size: 0.85rem; font-weight: 600; color: var(--ink-soft); text-decoration: none; white-space: nowrap; }
.back-link:hover { color: var(--primary-2); }

h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.7rem;
  margin: 0 0 2px;
  color: var(--ink);
  text-wrap: balance;
}
.subtitle { color: var(--ink-soft); font-size: 0.92rem; margin: 0 0 6px; max-width: 62ch; }
.lead-disclaimer { color: var(--ink-faint); font-size: 0.78rem; font-style: italic; margin: 0; }
.lead-disclaimer a { color: inherit; }

.partner-logo {
  display: block;
  height: 34px;
  width: auto;
  flex-shrink: 0;
  opacity: 0.9;
}

main.wrap { padding-top: 4px; padding-bottom: 56px; }

/* Card */
.card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
  margin: 20px 0;
}
.card h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}
.card h2 svg { color: var(--primary-2); flex-shrink: 0; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 880px) { .grid { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}
.field-note, .hint { font-size: 0.78rem; color: var(--ink-faint); }

input[type="text"], input[type="number"], input[type="tel"], input[type="email"], select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.96rem;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  outline: none;
  appearance: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2355627a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}
input:focus, select:focus, button:focus-visible {
  outline: 2px solid var(--primary-2);
  outline-offset: 1px;
}
select:disabled, input:disabled {
  background-color: var(--line-soft);
  color: var(--ink-faint);
  cursor: not-allowed;
}

.input-money { position: relative; }
.input-money input { padding-right: 32px; }
.input-money::after {
  content: "€";
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  color: var(--ink-faint); font-size: 0.9rem; pointer-events: none;
}

.form-error {
  margin-top: 18px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--bad-soft);
  border: 1px solid color-mix(in srgb, var(--bad) 35%, transparent);
  color: var(--bad);
  font-size: 0.85rem;
  font-weight: 600;
}

.btn-primary {
  margin-top: 26px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 15px 20px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.12s, box-shadow 0.12s, filter 0.15s;
}
.btn-primary:hover { filter: brightness(1.06); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

/* Resultado */
.resultado { animation: aparecer 0.35s ease; }
@keyframes aparecer {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.total-card {
  background: linear-gradient(155deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.total-card .total-label { font-size: 0.82rem; opacity: 0.85; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; }
.total-card .total-figure {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2.4rem;
  margin: 4px 0 0;
  letter-spacing: -0.01em;
}

.breakdown { list-style: none; margin: 0; padding: 0; }
.breakdown li.b-item {
  display: flex; flex-direction: column; gap: 4px;
  padding: 12px 0; border-top: 1px solid var(--line-soft);
}
.breakdown li.b-item:first-child { border-top: none; padding-top: 0; }
.breakdown .b-row { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.breakdown .b-label { color: var(--ink-soft); font-size: 0.9rem; }
.breakdown .b-value { font-weight: 700; white-space: nowrap; font-size: 1.05rem; color: var(--ink); }
.breakdown .b-detail { font-size: 0.78rem; color: var(--ink-faint); line-height: 1.5; }

.notes-box {
  background: var(--primary-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 0.83rem;
  color: var(--ink-soft);
  margin-top: 16px;
  line-height: 1.55;
}
.notes-box + .notes-box { margin-top: 10px; }

/* Lead */
.lead-card { background: linear-gradient(155deg, var(--primary-soft) 0%, var(--paper-2) 65%); }
.lead-card .claim {
  font-family: var(--font-display); font-style: italic; font-weight: 500;
  font-size: 1.05rem; color: var(--primary-2); margin: 0 0 10px; text-wrap: balance;
}
.lead-card h2 { margin-top: 0; margin-bottom: 6px; }
.lead-card .lead-intro { margin: 0 0 20px; color: var(--ink-soft); font-size: 0.92rem; }

.btn-add-row {
  appearance: none; border: 1px dashed var(--line); background: transparent;
  color: var(--primary-2); font-family: var(--font-body); font-weight: 600; font-size: 0.92rem;
  padding: 12px 16px; border-radius: var(--radius-sm); cursor: pointer; width: 100%;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: background 0.15s;
}
.btn-add-row:hover { background: var(--primary-soft); }

.lead-grid { margin-bottom: 4px; }

.campo-trampa {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.checkbox-field {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  cursor: pointer;
}
.checkbox-field input {
  margin-top: 3px;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  accent-color: var(--primary-2);
}
.checkbox-field a { color: var(--primary-2); }

.lead-success {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--good-soft);
  border: 1px solid color-mix(in srgb, var(--good) 35%, transparent);
  color: var(--good);
  font-size: 0.88rem;
  font-weight: 600;
}

#lead-submit { margin-top: 20px; }
#lead-submit:disabled { opacity: 0.6; cursor: not-allowed; }

/* Footer */
.site-footer {
  margin-top: 12px;
  padding: 20px 0 48px;
  border-top: 1px solid var(--line);
}
.site-footer p {
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin: 0 0 8px;
  text-align: left;
  line-height: 1.6;
}
.site-footer p:last-child { margin-bottom: 0; }
.site-footer a { color: inherit; }

/* Responsive */
@media (max-width: 640px) {
  .card { padding: 20px; }
  h1 { font-size: 1.4rem; }
}


.whatsapp-float {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 58px;
  height: 58px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(18, 55, 30, 0.35);
  z-index: 999;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.whatsapp-float:hover,
.whatsapp-float:focus-visible { transform: scale(1.08); box-shadow: 0 8px 22px rgba(18, 55, 30, 0.42); }
.whatsapp-float svg { width: 30px; height: 30px; fill: #ffffff; }
@media (max-width: 560px) {
  .whatsapp-float { width: 52px; height: 52px; bottom: 16px; right: 16px; }
  .whatsapp-float svg { width: 27px; height: 27px; }
}
@media (prefers-reduced-motion: reduce) {
  .whatsapp-float { transition: none; }
}