/* Kit Monotributo Freelancer — estilos base
   Mobile-first, sin frameworks, sin dependencias externas. */

:root {
  --color-bg: #faf9f7;
  --color-bg-alt: #ffffff;
  --color-text: #1b1d1f;
  --color-text-muted: #5a5f66;
  --color-border: #e4e1db;
  --color-primary: #1b5e4a;
  --color-primary-dark: #123f32;
  --color-primary-light: #e5f0ec;
  --color-accent: #d98a3d;
  --color-ok: #1b5e4a;
  --color-warn: #b5731b;
  --color-danger: #a3372c;
  --radius: 10px;
  --max-width: 960px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14161a;
    --color-bg-alt: #1b1e23;
    --color-text: #ececec;
    --color-text-muted: #a6acb5;
    --color-border: #2c3038;
    --color-primary: #4fb894;
    --color-primary-dark: #7fd4b5;
    --color-primary-light: #1c2b26;
    --color-accent: #e6a35c;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

a { color: var(--color-primary-dark); }

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  position: sticky;
  top: 0;
  z-index: 20;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 12px;
}
.brand {
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand .brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
}
.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
  font-size: 0.92rem;
}
.nav-links a { text-decoration: none; color: var(--color-text-muted); }
.nav-links a:hover { color: var(--color-text); }
.btn-nav {
  background: var(--color-primary);
  color: #fff !important;
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 600;
}

/* Hero */
.hero {
  padding: 48px 0 28px;
  text-align: center;
}
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  padding: 5px 12px;
  border-radius: 999px;
  font-weight: 700;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(1.65rem, 5vw, 2.5rem);
  margin: 0 0 14px;
  line-height: 1.2;
}
.hero p.lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 auto;
}

/* Calculator card */
.calc-section { padding: 12px 0 56px; }
.calc-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
@media (min-width: 640px) {
  .calc-card { padding: 28px; }
}

.calc-toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.toggle-btn {
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.88rem;
  cursor: pointer;
  font-family: inherit;
}
.toggle-btn[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.field-group { margin-bottom: 16px; }
.field-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text-muted);
}
.field-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: flex-end;
}
.field-row .field-group { flex: 1 1 160px; margin-bottom: 0; }

input[type="number"], input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-bg-alt);
  color: var(--color-text);
}
input:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }

.months-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
@media (min-width: 520px) {
  .months-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 760px) {
  .months-grid { grid-template-columns: repeat(4, 1fr); }
}
.month-field label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 4px;
}

[hidden] { display: none !important; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary:hover { background: var(--color-primary-dark); }

.btn-secondary {
  background: transparent;
  color: var(--color-primary-dark);
  border: 1px solid var(--color-primary);
  padding: 11px 20px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
}

/* Results */
.results {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--color-border);
}
.result-headline {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.cat-badge {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.result-headline h3 { margin: 0 0 2px; font-size: 1.15rem; }
.result-headline p { margin: 0; color: var(--color-text-muted); font-size: 0.92rem; }

.result-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 16px;
}
@media (min-width: 640px) {
  .result-grid { grid-template-columns: repeat(3, 1fr); }
}
.stat-box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 14px;
}
.stat-box .stat-label {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  font-weight: 700;
  margin-bottom: 6px;
}
.stat-box .stat-value {
  font-size: 1.25rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.stat-box .stat-sub { font-size: 0.82rem; color: var(--color-text-muted); margin-top: 2px; }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}
.status-ok { background: #e5f0ec; color: var(--color-ok); }
.status-warn { background: #fbeed9; color: var(--color-warn); }
.status-danger { background: #fbe4e0; color: var(--color-danger); }

@media (prefers-color-scheme: dark) {
  .status-ok { background: #17332a; }
  .status-warn { background: #3a2c14; }
  .status-danger { background: #3a1c17; }
}

.progress-bar {
  height: 10px;
  border-radius: 999px;
  background: var(--color-border);
  overflow: hidden;
  margin: 10px 0 4px;
}
.progress-bar-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 999px;
  transition: width 0.3s ease;
}
.progress-bar-fill.warn { background: var(--color-accent); }
.progress-bar-fill.danger { background: var(--color-danger); }

.note-box {
  background: var(--color-primary-light);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.88rem;
  color: var(--color-text);
  margin-top: 10px;
}
.note-box.small { font-size: 0.8rem; color: var(--color-text-muted); background: transparent; padding: 0; margin-top: 14px; }

.disclaimer {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 18px;
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
}

/* Product section */
.product-section {
  padding: 56px 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
@media (min-width: 800px) {
  .product-grid { grid-template-columns: 1.2fr 1fr; }
}
.product-copy h2 { font-size: 1.7rem; margin-top: 0; }
.feature-list { list-style: none; padding: 0; margin: 20px 0; }
.feature-list li {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  align-items: flex-start;
}
.feature-list li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 800;
  flex-shrink: 0;
}

.price-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  position: sticky;
  top: 90px;
}
.price-card .price {
  font-size: 2.6rem;
  font-weight: 800;
  margin: 6px 0 2px;
}
.price-card .price-sub { color: var(--color-text-muted); font-size: 0.88rem; margin-bottom: 18px; }
.price-card .btn-primary { width: 100%; padding: 14px; font-size: 1.05rem; }
.price-card .guarantee { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 12px; }

.included-list {
  text-align: left;
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  font-size: 0.88rem;
}
.included-list li { padding: 5px 0; display: flex; gap: 8px; }
.included-list li::before { content: "•"; color: var(--color-accent); font-weight: 800; }

/* FAQ */
.faq-section { padding: 56px 0; }
.faq-section h2 { text-align: center; margin-bottom: 28px; }
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  color: var(--color-primary);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p { color: var(--color-text-muted); margin: 10px 0 0; }

/* Footer */
.site-footer {
  padding: 32px 0 40px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.site-footer .footer-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.site-footer a { color: var(--color-text-muted); }

/* Legal pages */
.legal-page { padding: 40px 0 60px; }
.legal-page h1 { margin-bottom: 4px; }
.legal-page .updated { color: var(--color-text-muted); font-size: 0.85rem; margin-bottom: 28px; }
.legal-page h2 { margin-top: 32px; font-size: 1.15rem; }
.legal-page p, .legal-page li { color: var(--color-text); }
.legal-page ul { padding-left: 20px; }

.section-divider { height: 1px; background: var(--color-border); margin: 0; }