:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --surface-2: #f0efe9;
  --text: #14171f;
  --muted: #5b6170;
  --border: #e2e0d8;
  --accent: #0f7a5c;
  --accent-hover: #0b6249;
  --accent-ink: #ffffff;
  --accent-soft: #e3f3ec;
  --warn: #8a5a00;
  --warn-soft: #fdf3dc;
  --error: #b42318;
  --error-soft: #fdecea;
  --info: #2457a6;
  --info-soft: #e8f0fb;
  --radius: 14px;
  --shadow: 0 1px 2px rgb(20 23 31 / 0.04), 0 8px 24px rgb(20 23 31 / 0.06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --surface-2: #1e222b;
    --text: #eceef2;
    --muted: #a0a6b4;
    --border: #2a2f3a;
    --accent: #3ccf9b;
    --accent-hover: #5fdcb0;
    --accent-ink: #062b1f;
    --accent-soft: #12322a;
    --warn: #f2b84b;
    --warn-soft: #3a2d12;
    --error: #ff7b72;
    --error-soft: #3d1b1a;
    --info: #7fb0ff;
    --info-soft: #17263f;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 8px 24px rgb(0 0 0 / 0.25);
    color-scheme: dark;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

[id] {
  scroll-margin-top: 76px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
}

h2 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
}

h3 {
  font-size: 1.05rem;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--accent);
}

[hidden] {
  display: none !important;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 720px) {
  .container {
    padding: 0 24px;
  }
}

/* Cabeçalho */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  gap: 20px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover {
  color: var(--text);
}

@media (max-width: 560px) {
  .nav a:not(:first-child) {
    display: none;
  }
}

/* Hero */

.hero {
  padding: clamp(48px, 10vw, 96px) 0 48px;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2rem, 6vw, 3.4rem);
  max-width: 14ch;
  letter-spacing: -0.03em;
}

.lead {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--muted);
  max-width: 60ch;
}

.trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding: 0;
  margin: 24px 0 32px;
  list-style: none;
  color: var(--text);
  font-size: 0.95rem;
}

.trust li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
  margin-right: 8px;
}

/* Botões */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.button:hover {
  border-color: var(--muted);
}

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  min-height: 48px;
  padding: 0 24px;
}

.button-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* Calculadora */

.app {
  padding: 24px 0 64px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(20px, 4vw, 32px);
  margin-bottom: 24px;
}

.dropzone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 40px 16px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover,
.dropzone.dragging {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.dropzone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone-title {
  font-weight: 600;
}

.dropzone-hint {
  color: var(--muted);
  font-size: 0.9rem;
}

.privacy {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.privacy a {
  margin-left: 4px;
}

.file-list {
  display: grid;
  gap: 8px;
  padding: 0;
  margin: 16px 0 0;
  list-style: none;
}

.file {
  position: relative;
  padding: 12px 48px 12px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.file-error {
  border-color: color-mix(in srgb, var(--error) 40%, var(--border));
  background: var(--error-soft);
}

.file-main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  word-break: break-all;
}

.file-meta {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.file details {
  margin-top: 6px;
  font-size: 0.9rem;
}

.file details ul {
  margin: 6px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.file-remove {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 1.3rem;
  cursor: pointer;
}

.file-remove:hover {
  background: var(--surface-2);
  color: var(--text);
}

.badge {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
}

/* Resultados */

.results-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.results-head h2 {
  margin: 0;
}

.year-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.year-picker select {
  min-height: 38px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

.empty {
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.card {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
}

.card h3 {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.card-value {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.card-note {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.card-accent {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}

.card-accent .card-value {
  color: var(--accent);
}

.warnings {
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}

.callout {
  padding: 12px 16px;
  border-radius: 10px;
  border-left: 4px solid;
}

.callout p {
  margin: 2px 0 0;
  font-size: 0.92rem;
}

.callout-erro {
  background: var(--error-soft);
  border-color: var(--error);
}

.callout-aviso {
  background: var(--warn-soft);
  border-color: var(--warn);
}

.callout-info {
  background: var(--info-soft);
  border-color: var(--info);
}

.table-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.table-head h3 {
  margin: 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.lines {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.lines th,
.lines td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.lines th {
  background: var(--surface-2);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
}

.lines tbody tr:last-child td {
  border-bottom: 0;
}

.lines .num {
  text-align: right;
}

.negative {
  color: var(--error);
}

.pill {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  font-weight: 600;
}

.pill-ok {
  background: var(--accent-soft);
  border-color: transparent;
  color: var(--accent);
}

.pill-error {
  background: var(--error-soft);
  border-color: transparent;
  color: var(--error);
}

.disclaimer {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

/* Secções informativas */

.steps,
.faq {
  padding: 56px 0;
  border-top: 1px solid var(--border);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
  counter-reset: step;
}

.step-list li {
  counter-increment: step;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.step-list li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.step-list p {
  margin: 0;
  color: var(--muted);
}

.faq details {
  max-width: 760px;
  border-bottom: 1px solid var(--border);
}

.faq summary {
  padding: 16px 0;
  font-weight: 600;
  cursor: pointer;
}

.faq details p {
  color: var(--muted);
}

.site-footer {
  padding: 32px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

/* Impressão: só o resumo e a tabela. */

@media print {
  .site-header,
  .hero,
  .steps,
  .faq,
  .site-footer,
  .panel:first-child,
  .actions,
  .year-picker {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .panel {
    box-shadow: none;
    border: 0;
    padding: 0;
  }

  .lines {
    white-space: normal;
    font-size: 9pt;
  }
}

/* Ficheiros: avisos e guias de exportação */

.panel-intro {
  color: var(--muted);
  max-width: 70ch;
}

.file-notice {
  margin: 6px 0 0;
  font-size: 0.88rem;
  color: var(--warn);
}

.guides {
  margin-top: 16px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.guides summary {
  font-weight: 600;
  cursor: pointer;
}

.guides dl {
  margin: 12px 0 0;
}

.guides dt {
  font-weight: 600;
  margin-top: 12px;
}

.guides dd {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.93rem;
}

/* Plataformas e opções */

.hint {
  color: var(--muted);
  font-size: 0.88rem;
  margin: 0 0 12px;
}

.settings {
  margin-bottom: 28px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.platforms {
  display: grid;
  gap: 12px;
  margin-bottom: 16px;
}

.platform {
  display: grid;
  grid-template-columns: minmax(110px, 160px) minmax(0, 1fr);
  align-items: center;
  gap: 6px 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.platform label {
  grid-column: 2;
}

.platform-note,
.platform-warn {
  grid-column: 2;
  margin: 0;
  font-size: 0.85rem;
}

.platform-note {
  color: var(--muted);
}

.platform-warn {
  color: var(--error);
}

.settings label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-size: 0.9rem;
  color: var(--muted);
}

.settings select,
.settings input {
  min-height: 38px;
  max-width: 100%;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

.settings input {
  width: 12ch;
}

.options {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.options label {
  display: grid;
  gap: 4px;
  justify-items: start;
}

.options select,
.platform select {
  width: min(100%, 420px);
  min-width: 0;
}

@media (max-width: 560px) {
  .platform {
    grid-template-columns: 1fr;
  }

  .platform label,
  .platform-note,
  .platform-warn {
    grid-column: 1;
  }
}

/* Quadros da declaração */

.form-card {
  margin-bottom: 20px;
}

.form-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 10px;
}

.form-head h4 {
  margin: 2px 0 4px;
  font-size: 1rem;
}

.form-head .hint {
  margin: 0;
}

.form-annex {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
}

.form-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.form-table th,
.form-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.form-table thead th {
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
}

.form-table thead tr:first-child th[colspan] {
  border-bottom: 1px solid var(--border);
}

.form-table .num {
  text-align: right;
}

.form-table .value {
  font-weight: 600;
}

.form-table tfoot td {
  background: var(--surface-2);
  font-weight: 700;
  border-bottom: 0;
}

.row-flagged td {
  background: var(--error-soft);
}

.missing {
  display: inline-grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--error-soft);
  color: var(--error);
  font-weight: 700;
}

.detail {
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.detail > summary {
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 12px;
}

@media print {
  .settings,
  .detail,
  .form-head .button {
    display: none !important;
  }

  .form-table {
    font-size: 8pt;
  }
}

.link-button {
  padding: 0;
  border: 0;
  background: none;
  color: var(--accent);
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}

/* Relatório completo (pagamento) */

.paywall {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 24px;
  margin-bottom: 24px;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: var(--radius);
  background: var(--accent-soft);
  transition: box-shadow 0.3s;
}

.paywall.highlight {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 35%, transparent);
}

.paywall-kicker {
  margin: 0 0 4px;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
}

.paywall h3 {
  font-size: 1.2rem;
}

.paywall ul {
  margin: 0;
  padding-left: 20px;
}

.paywall li {
  margin-bottom: 6px;
}

.paywall-price {
  margin: 0 0 12px;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.paywall-price small {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0;
}

.paywall .button-primary {
  width: 100%;
}

.button.disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.paywall-legal {
  margin: 10px 0 16px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.paywall-key label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.9rem;
}

.key-row {
  display: flex;
  gap: 8px;
}

.key-row input {
  flex: 1;
  min-width: 0;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
}

.paywall-status {
  min-height: 1.4em;
  margin: 8px 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.paywall-error {
  color: var(--error);
}

.unlocked {
  margin: 0 0 20px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.92rem;
}

.locked-row td {
  padding: 14px 12px;
  text-align: center;
  background: repeating-linear-gradient(135deg, var(--surface-2), var(--surface-2) 8px, transparent 8px, transparent 16px);
}

.locked-row .link-button {
  font-weight: 600;
}

@media (max-width: 720px) {
  .paywall {
    grid-template-columns: 1fr;
  }
}

@media print {
  .paywall,
  .unlocked,
  .locked-row {
    display: none !important;
  }
}

/* Páginas de texto: termos, privacidade e guias */

.prose {
  max-width: 760px;
  padding-top: 48px;
  padding-bottom: 64px;
}

.prose h1 {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  letter-spacing: -0.025em;
}

.prose h2 {
  margin-top: 2em;
  font-size: 1.3rem;
}

.prose h3 {
  margin-top: 1.5em;
}

.prose p,
.prose li {
  color: var(--text);
}

.prose ul,
.prose ol {
  padding-left: 22px;
}

.prose li {
  margin-bottom: 6px;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 0.92rem;
}

.prose th,
.prose td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.85rem;
}

.updated {
  color: var(--muted);
  font-size: 0.9rem;
}

.cta {
  margin: 32px 0;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--accent-soft);
}

.cta p {
  margin-bottom: 12px;
}

.footer-inner {
  display: grid;
  gap: 12px;
}

.footer-inner p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-links a {
  color: var(--muted);
}