:root {
  --bg: #f6f7f9;
  --bg-elevated: #ffffff;
  --bg-sunken: #f0f2f5;
  --border: #dfe3ea;
  --text: #1b1f27;
  --text-muted: #5f6875;
  --accent: #0f8a63;
  --accent-soft: rgba(15, 138, 99, 0.12);
  --warn: #a86414;
  --danger: #c0453f;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 25, 35, 0.05), 0 8px 24px rgba(20, 25, 35, 0.06);
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bg-elevated: #171a21;
    --bg-sunken: #10131a;
    --border: #2a2f3a;
    --text: #eef0f4;
    --text-muted: #98a0ad;
    --accent: #4fd1a5;
    --accent-soft: rgba(79, 209, 165, 0.14);
    --warn: #f5b95a;
    --danger: #f27a7a;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.5;
  min-height: 100vh;
}

.page {
  max-width: 1060px;
  margin: 0 auto;
  padding: 40px 20px 56px;
}

/* --- Hero ---------------------------------------------------------------- */
.hero {
  text-align: center;
  margin-bottom: 32px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 12px;
}

.hero h1 {
  font-size: clamp(26px, 4.2vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.hero-sub {
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  font-size: 15.5px;
}

.hero-sub strong {
  color: var(--text);
}

/* --- Layout -------------------------------------------------------------- */
.layout {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 880px) {
  .layout {
    grid-template-columns: 1fr;
  }
  /* Empilhado, o formulário tem 11 campos. Se o resultado ficasse embaixo dele, a estimativa
     só apareceria depois de rolar tudo — então ela vem primeiro. */
  .result-panel {
    order: -1;
    position: static;
  }
}

.panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel h2 {
  margin: 0 0 18px;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.result-panel {
  position: sticky;
  top: 20px;
}

/* --- Form ---------------------------------------------------------------- */
.field {
  margin-bottom: 14px;
}

.field label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 5px;
}

select {
  width: 100%;
  background: var(--bg-sunken);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 34px 10px 12px;
  font-size: 14.5px;
  font-family: inherit;
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2.4' 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;
  text-overflow: ellipsis;
}

select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.field-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin: 16px 0 14px;
}

.btn {
  display: block;
  width: 100%;
  padding: 11px;
  border-radius: 9px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.btn-ghost {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* --- Result -------------------------------------------------------------- */
.result-caption {
  font-size: 12.5px;
  color: var(--text-muted);
  margin: 0 0 2px;
}

.result-value {
  display: flex;
  align-items: baseline;
  gap: 7px;
  margin-bottom: 14px;
}

.currency {
  font-size: 21px;
  color: var(--text-muted);
  font-weight: 650;
}

#result-amount {
  font-size: clamp(38px, 6vw, 50px);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
}

.result-stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 20px;
  margin: 0 0 12px;
  padding: 12px 14px;
  background: var(--bg-sunken);
  border-radius: 10px;
}

.result-stats > div {
  display: contents;
}

.result-stats dt {
  font-size: 13px;
  color: var(--text-muted);
}

.result-stats dd {
  margin: 0;
  font-size: 13.5px;
  font-weight: 600;
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.has-tip {
  cursor: help;
  text-decoration: underline dotted var(--border);
  text-underline-offset: 3px;
}

.median-note {
  font-size: 12.5px;
  color: var(--text-muted);
  margin: 0 0 14px;
}

.confidence {
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 13px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--accent);
}

.dot.warn {
  background: var(--warn);
}

.dot.danger {
  background: var(--danger);
}

.note {
  font-size: 12.5px;
  background: var(--bg-sunken);
  border-left: 3px solid;
  border-radius: 0 8px 8px 0;
  padding: 9px 12px;
  margin: 0 0 12px;
}

.note-warn {
  color: var(--warn);
  border-left-color: var(--warn);
}

.note-info {
  color: var(--text-muted);
  border-left-color: var(--border);
}

.trend {
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 12px;
  padding: 0 2px;
  font-weight: 600;
}

.trend.down {
  color: var(--danger);
}

/* --- Breakdown ----------------------------------------------------------- */
.breakdown-title {
  font-size: 12px;
  color: var(--text-muted);
  margin: 20px 0 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.breakdown-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.breakdown-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: var(--bg-sunken);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 13.5px;
}

.breakdown-empty {
  color: var(--text-muted);
  justify-content: flex-start !important;
}

.breakdown-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.breakdown-label {
  color: var(--text);
}

.breakdown-sub {
  color: var(--text-muted);
  font-size: 11.5px;
}

.breakdown-list li.is-unidentified {
  border-left: 3px solid var(--border);
}

.breakdown-flag {
  display: inline-block;
  margin-left: 7px;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--border);
  color: var(--text-muted);
  font-size: 10.5px;
  font-weight: 600;
  vertical-align: 1px;
  cursor: help;
}

.breakdown-impact {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.breakdown-impact.up {
  color: var(--accent);
}

.breakdown-impact.down {
  color: var(--danger);
}

/* --- Methodology --------------------------------------------------------- */
.methodology {
  font-size: 12.5px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 16px;
}

.methodology summary {
  cursor: pointer;
  font-weight: 650;
  color: var(--text);
  font-size: 13px;
  list-style-position: outside;
}

.methodology summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

.methodology p {
  margin: 10px 0 0;
}

.methodology strong {
  color: var(--text);
}

/* --- Footer -------------------------------------------------------------- */
.footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 12.5px;
  margin-top: 30px;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}