/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #f4f1ea;
  --card: #fffdf8;
  --ink: #1b1f24;
  --muted: #5a616b;
  --line: #e2ddd3;
  --accent: #0b6e63;
  --accent-ink: #f4fffc;
  --ss: #3d6486;
  --irpf: #b45309;
  --neto: #0b6e63;
  --danger: #9f2d2d;
  --gutter: 1rem;
  --radius: 12px;
  --shadow: 0 1px 0 rgba(27, 31, 36, 0.04), 0 8px 24px rgba(27, 31, 36, 0.05);
  --sans: "Segoe UI", system-ui, -apple-system, "Roboto", "Helvetica Neue", sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121416;
    --card: #1b1e23;
    --ink: #f2efe8;
    --muted: #a8b0ba;
    --line: #2c323a;
    --accent: #3dbaab;
    --accent-ink: #06221f;
    --ss: #7eb0d4;
    --irpf: #e2a066;
    --neto: #5fd0c3;
    --danger: #f0a3a3;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.4), 0 10px 28px rgba(0, 0, 0, 0.28);
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; letter-spacing: -0.02em; line-height: 1.15; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
::selection { background: var(--accent); color: var(--accent-ink); }

/* =============================================================
   3. Utilities
   ============================================================= */
.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 9999;
  padding: 0.55rem 0.9rem; background: var(--ink); color: var(--bg);
  border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.wrap {
  width: min(100% - 2 * var(--gutter), var(--max));
  margin-inline: auto;
}

/* =============================================================
   4. Header
   ============================================================= */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  padding: 0.45rem 0;
  min-height: 40px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--accent); color: var(--accent-ink);
  display: grid; place-items: center; font-size: 0.85rem;
}
.year-chip {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  white-space: nowrap;
}
.nav-tools {
  font-size: 0.78rem;
  font-weight: 600;
  color: inherit;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.22rem 0.5rem;
  background: var(--card);
  flex: 0 1 auto;
  white-space: nowrap;
}
.nav-panel {
  position: absolute;
  right: var(--gutter);
  top: 44px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.5rem 0.75rem;
  box-shadow: var(--shadow);
  z-index: 20;
  min-width: 180px;
}
.nav-panel a { display: block; padding: 0.35rem 0; color: inherit; text-decoration: none; }
.nav-long { display: none; }
.header-wrap { position: relative; }

/* =============================================================
   5. Hero + tool
   ============================================================= */
.hero { padding: 0.35rem 0 0.4rem; }
.hero h1 { font-size: clamp(1.28rem, 4.4vw, 2rem); margin-bottom: 0.28rem; }
.lede {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.35;
  max-width: 42rem;
}

.tool-card {
  margin-top: 0.7rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.75rem;
}
.tool-layout {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.tool-primary { order: 1; }
.tool-result { order: 2; }
.tool-more { order: 3; }

.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 0.6rem;
}
.field { display: flex; flex-direction: column; gap: 0.22rem; min-width: 0; }
.field-wide { grid-column: 1 / -1; }
label, .label {
  font-size: 0.74rem;
  font-weight: 650;
  color: var(--muted);
}
input[type="number"], select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 8px;
  padding: 0.42rem 0.55rem;
  min-height: 40px;
}
.seg {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg);
}
.seg label {
  flex: 1;
  text-align: center;
  padding: 0.4rem 0.2rem;
  font-size: 0.78rem;
  font-weight: 650;
  color: var(--ink);
  cursor: pointer;
}
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg input:checked + span,
.seg label:has(input:checked) {
  background: var(--accent);
  color: var(--accent-ink);
}
.seg label span { display: block; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.4rem 0.9rem;
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: 8px;
  font-weight: 700;
  width: 100%;
}
.btn:hover { filter: brightness(1.05); }

.tool-more summary {
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 650;
  color: var(--accent);
  list-style: none;
}
.tool-more summary::-webkit-details-marker { display: none; }
.tool-more[open] summary { margin-bottom: 0.5rem; }

.noscript {
  padding: 0.7rem 0.8rem;
  background: #f6e7d8;
  color: #6a3a12;
  border-radius: 8px;
  font-size: 0.9rem;
}
@media (prefers-color-scheme: dark) {
  .noscript { background: #3a2a18; color: #f3d7b3; }
}

.tool-result {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.75rem 0.8rem;
}
.result-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.neto-mes {
  font-size: clamp(1.7rem, 6vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--accent);
  line-height: 1.05;
  margin: 0.15rem 0 0.1rem;
}
.neto-sub { font-size: 0.82rem; color: var(--muted); }
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  margin: 0.65rem 0 0.55rem;
}
.result-stat {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.4rem 0.5rem;
}
.result-stat b { display: block; font-size: 0.95rem; }
.result-stat span { font-size: 0.7rem; color: var(--muted); }
.bar {
  display: flex;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--line);
}
.bar > i { display: block; height: 100%; }
.bar [data-seg="ss"] { background: var(--ss); }
.bar [data-seg="irpf"] { background: var(--irpf); }
.bar [data-seg="neto"] { background: var(--neto); }
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  margin-top: 0.4rem;
  font-size: 0.72rem;
  color: var(--muted);
}
.legend b { font-weight: 650; color: var(--ink); }
.swatch {
  display: inline-block; width: 0.55rem; height: 0.55rem;
  border-radius: 2px; margin-right: 0.25rem; vertical-align: -1px;
}
.swatch.ss { background: var(--ss); }
.swatch.irpf { background: var(--irpf); }
.swatch.neto { background: var(--neto); }
.breakdown {
  list-style: none;
  margin-top: 0.55rem;
  font-size: 0.82rem;
}
.breakdown li {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.22rem 0;
  border-bottom: 1px solid var(--line);
}
.year-line {
  margin-top: 0.5rem;
  font-size: 0.72rem;
  color: var(--muted);
}
.notes {
  margin-top: 0.45rem;
  padding-left: 1rem;
  font-size: 0.75rem;
  color: var(--muted);
}
.error-box {
  display: none;
  color: var(--danger);
  font-size: 0.9rem;
  font-weight: 650;
}

.tool-card[data-state="idle"] .tool-result,
.tool-card[data-state="working"] .tool-result { opacity: 0.85; }
.tool-card[data-state="error"] .tool-result { display: none; }
.tool-card[data-state="error"] .error-box { display: block; }
.tool-card[data-state="working"] .btn { opacity: 0.8; }

.honesty {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  margin: 0.65rem 0 0.2rem;
  font-size: 0.8rem;
  color: var(--muted);
}
.honesty svg { flex: 0 0 auto; margin-top: 0.1rem; }

/* =============================================================
   6. Ads
   ============================================================= */
.ad-slot {
  margin: 1rem 0;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--card) 70%, transparent);
}
.ad-leader { min-height: 90px; }
.ad-rect { min-height: 250px; max-width: 300px; margin-inline: auto; }
.ad-billboard { min-height: 100px; }

/* =============================================================
   7. Content
   ============================================================= */
.section { padding: 1.4rem 0; }
.section h2 { font-size: 1.25rem; margin-bottom: 0.8rem; }
.steps {
  display: grid;
  gap: 0.7rem;
}
.step {
  display: flex;
  gap: 0.7rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem;
}
.step svg { flex: 0 0 auto; color: var(--accent); }
.step h3 { font-size: 0.95rem; margin-bottom: 0.15rem; }
.step p { font-size: 0.88rem; color: var(--muted); }
.seo p { margin-bottom: 0.75rem; color: var(--ink); }
.seo h2 { margin-top: 0.2rem; }
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0;
}
.faq summary { cursor: pointer; font-weight: 650; }
.faq details p { margin-top: 0.4rem; color: var(--muted); font-size: 0.95rem; }
.tools-grid {
  display: grid;
  gap: 0.7rem;
}
.tool-teaser {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.85rem;
  text-decoration: none;
  color: inherit;
}
.tool-teaser h3 { font-size: 1rem; margin-bottom: 0.2rem; }
.tool-teaser p { font-size: 0.88rem; color: var(--muted); }
.soon {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.site-footer {
  padding: 1.4rem 0 2rem;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: space-between;
}
.site-footer a { color: inherit; }

.legal { padding: 2rem 0 3rem; }
.legal h1 { margin-bottom: 0.8rem; }
.legal p, .legal li { margin-bottom: 0.65rem; color: var(--muted); }
.todo {
  background: var(--card);
  border: 1px dashed var(--irpf);
  border-radius: 8px;
  padding: 0.7rem 0.8rem;
  color: var(--ink);
  font-size: 0.9rem;
}

@media (max-width: 539px) {
  .breakdown { display: none; }
  .tool-card { padding: 0.5rem; }
  .tool-result { padding: 0.5rem 0.55rem 0.55rem; }
  .btn { min-height: 36px; margin-top: 0.35rem; }
  .notes { margin-top: 0.2rem; max-height: 2.4em; overflow: auto; }
  .hero { padding: 0.15rem 0 0.2rem; }
  .hero h1 { font-size: 1.2rem; }
  .lede { font-size: 0.78rem; }
  .honesty { font-size: 0.72rem; margin-top: 0.45rem; }
  .year-chip { font-size: 0.62rem; padding: 0.12rem 0.38rem; }
  .neto-mes { font-size: 1.5rem; }
  .result-grid { margin: 0.35rem 0 0.3rem; gap: 0.35rem; }
  .fields { gap: 0.38rem 0.45rem; }
  input[type="number"], select { min-height: 36px; padding: 0.3rem 0.45rem; }
  .seg label { padding: 0.3rem 0.12rem; }
  .nav-long { display: none; }
  .site-header { min-width: 0; }
  .brand { min-width: 0; }
}

/* =============================================================
   8. Responsive
   ============================================================= */
@media (min-width: 540px) {
  .nav-long { display: inline; }
  .nav-short { display: none; }
  .steps { grid-template-columns: 1fr 1fr; }
  .steps .step:last-child { grid-column: 1 / -1; }
}
@media (min-width: 720px) {
  :root { --gutter: 1.25rem; }
  .tool-card { padding: 1rem; }
  .tool-layout {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    grid-template-areas:
      "primary result"
      "more result";
    align-items: start;
    gap: 0.9rem 1rem;
  }
  .tool-primary { grid-area: primary; order: unset; }
  .tool-result { grid-area: result; order: unset; position: sticky; top: 0.6rem; }
  .tool-more { grid-area: more; order: unset; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps .step:last-child { grid-column: auto; }
  .tools-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 960px) {
  .hero h1 { font-size: 2.1rem; }
}
@media (min-width: 1280px) {
  :root { --max: 1120px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}