/* Calcula ENEM — interface responsiva. O modelo TRI permanece em script.js. */
:root {
  --ink: #252337;
  --muted: #6c697e;
  --green: #6547de;
  --lime: #d9f88b;
  --paper: #fff;
  --paper-line: #e6e3ef;
  --purple: #ede8ff;
  --danger: #b32e48;
  --radius: 22px;
  --shadow: 0 12px 40px #30254a08;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
body {
  margin: 0;
  background: #f8f9fd;
  color: var(--ink);
  font:
    16px/1.65 "DM Sans",
    system-ui,
    sans-serif;
}
h1,
h2,
h3 {
  font-family: Manrope, system-ui, sans-serif;
  line-height: 1.2;
  letter-spacing: -0.8px;
}
h2 {
  font-size: 28px;
}
h3 {
  font-size: 20px;
}
a {
  color: inherit;
  text-underline-offset: 4px;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a,
input,
select,
summary {
  -webkit-tap-highlight-color: transparent;
}
button,
summary {
  cursor: pointer;
}
button,
a {
  transition:
    background 0.18s,
    box-shadow 0.18s,
    transform 0.18s;
}
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
button:hover:not(:disabled),
.btn-primary:hover,
.btn-secondary:hover {
  transform: translateY(-1px);
}
:focus-visible {
  outline: 3px solid #9879f3;
  outline-offset: 4px;
}
.hidden,
[hidden] {
  display: none !important;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  background: white;
  padding: 12px 20px;
  z-index: 99;
  border: 2px solid var(--green);
  border-radius: 12px;
}
.skip-link:focus {
  top: 12px;
}
.topbar,
main,
.page-intro {
  max-width: 1240px;
  width: calc(100% - 64px);
  margin-inline: auto;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  min-height: 100px;
  border-bottom: 1px solid var(--paper-line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: Manrope, system-ui, sans-serif;
  font-size: 27px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -1.2px;
  text-decoration: none;
  white-space: nowrap;
}
.brand-icon {
  display: grid;
  place-items: center;
  background: transparent;
  width: 43px;
  height: 43px;
  border-radius: 13px;
  transform: rotate(-5deg);
}
.brand-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.brand-accent {
  color: var(--green);
}
.brand-sub {
  display: block;
  font-family: "DM Sans", system-ui, sans-serif;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 1.6px;
  margin-top: 8px;
  color: var(--muted);
}
.nav-links {
  display: flex;
  gap: 5px;
  background: #efedf5;
  padding: 5px;
  border-radius: 50px;
}
.nav-links a {
  font-size: 13px;
  font-weight: 600;
  padding: 10px 19px;
  text-decoration: none;
  border-radius: 30px;
  white-space: nowrap;
}
.nav-links a[aria-current="page"] {
  background: white;
  color: var(--green);
  box-shadow: 0 2px 7px #30254a09;
}
.nav-links a:hover {
  background: #fff9;
}
.nav-note {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #2d9575;
  display: inline-block;
}
.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-size: 10px;
  letter-spacing: 1.7px;
  font-weight: 800;
  color: var(--green);
}
.page-intro {
  padding: 48px 0 34px;
  margin-bottom: 18px;
}
.page-intro h1 {
  font-size: clamp(36px, 4.5vw, 60px);
  letter-spacing: -2.6px;
  line-height: 1.12;
  margin: 20px 0;
}
.page-intro h1 em {
  font-style: normal;
  color: var(--green);
}
.page-intro p {
  font-size: 17px;
  color: var(--muted);
  max-width: 660px;
  line-height: 1.8;
}
.calculator-intro {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  align-items: center;
  gap: 50px;
  padding: 56px 0 50px;
  margin-bottom: 0;
}
.calculator-intro h1 {
  font-size: clamp(38px, 4.4vw, 60px);
}
.hero-copy > p {
  max-width: 540px;
  font-size: 16px;
  margin: 22px 0;
}
.hero-actions {
  display: flex;
  gap: 24px;
  align-items: center;
  margin-top: 28px;
}
.learn-link {
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}
.learn-link:hover {
  text-decoration: underline;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 21px;
  font-size: 10px;
  color: var(--muted);
  margin-top: 24px;
}
.hero-visual {
  height: 330px;
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
}
.visual-orbit {
  position: absolute;
  width: 320px;
  height: 300px;
  background: #e8e1fd;
  border-radius: 48% 52% 60% 40%;
  transform: rotate(20deg);
  z-index: -1;
}
.visual-orbit:after {
  content: "";
  position: absolute;
  inset: -20px;
  border: 1px dashed #d7cbee;
  border-radius: 50%;
}
.visual-card {
  width: 300px;
  background: white;
  border-radius: 21px;
  padding: 24px;
  transform: rotate(-5deg);
  box-shadow: 0 20px 50px #57439418;
  border: 1px solid #ebe6f6;
}
.visual-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--green);
}
.visual-badge {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 1.2px;
}
.visual-card h2 {
  font-size: 25px;
  letter-spacing: -1px;
  margin: 16px 0;
}
.visual-card h2 span {
  color: var(--green);
}
.visual-bars {
  height: 91px;
  display: flex;
  align-items: end;
  gap: 10px;
  padding: 0 4px;
  border-bottom: 1px solid #eee9f5;
}
.visual-bars i {
  flex: 1;
  background: #c3b1fa;
  border-radius: 7px 7px 0 0;
  height: 20%;
}
.visual-bars i:nth-child(2) {
  height: 36%;
  background: #d4c7fa;
}
.visual-bars i:nth-child(3) {
  height: 31%;
  background: #d4c7fa;
}
.visual-bars i:nth-child(4) {
  height: 55%;
  background: #a38aef;
}
.visual-bars i:nth-child(5) {
  height: 66%;
  background: #8b6de9;
}
.visual-bars i:nth-child(6) {
  height: 80%;
  background: #7655e4;
}
.visual-bars i:nth-child(7) {
  height: 100%;
  background: #d9f88b;
}
.visual-card-bottom {
  font-size: 10px;
  display: flex;
  justify-content: space-between;
  margin-top: 16px;
  color: var(--muted);
}
.visual-card-bottom b {
  color: var(--green);
}
.visual-star {
  position: absolute;
  right: 40px;
  top: 0;
  font-size: 76px;
  color: #fe9c86;
  line-height: 1;
  z-index: 2;
}
.visual-sticker {
  position: absolute;
  right: 0;
  bottom: 39px;
  background: #dbf797;
  border-radius: 12px;
  padding: 12px 20px;
  font-size: 12px;
  line-height: 1.5;
  transform: rotate(7deg);
  box-shadow: 0 8px 20px #2923300a;
}
.visual-sticker strong {
  font-size: 14px;
}
.visual-caption {
  position: absolute;
  bottom: -16px;
  color: #928a9d;
  font-size: 10px;
}
.workspace-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 28px 0 22px;
}
.workspace-title h2 {
  font-size: 28px;
  margin: 9px 0 0;
}
.workspace-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.4px;
  color: var(--muted);
  border: 1px solid var(--paper-line);
  padding: 8px 13px;
  border-radius: 8px;
}
.session-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-size: 12px;
  padding: 14px 18px;
  background: #eff4f0;
  border: 1px solid #e1eae3;
  border-radius: 12px;
  color: #466658;
}
.session-bar > div {
  display: flex;
  gap: 18px;
  flex-shrink: 0;
}
.text-button {
  border: 0;
  background: transparent;
  color: var(--green);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 0;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.exam-summary {
  font-size: 14px;
  color: var(--green);
  background: #ede8ff;
  border-radius: 10px;
  padding: 12px 18px;
  margin: 18px 0 0;
}
.journey {
  list-style: none;
  padding: 0;
  display: flex;
  gap: 25px;
  border-bottom: 1px solid var(--paper-line);
  margin: 7px 0 26px;
}
.journey li {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 12px;
  padding: 20px 0 17px;
  border-bottom: 2px solid transparent;
  color: #767181;
}
.journey li span {
  display: grid;
  place-items: center;
  border-radius: 50%;
  width: 29px;
  height: 29px;
  background: #eceaf2;
  font-size: 12px;
  flex-shrink: 0;
}
.journey li.active {
  border-color: var(--green);
  color: var(--green);
  font-weight: 700;
}
.journey li.active span {
  background: var(--green);
  color: white;
  box-shadow: 0 0 0 5px #eee9ff;
}
.journey li.complete span {
  background: #dff1e8;
  color: #277355;
}
.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 26px;
  align-items: start;
}
.calculator-panels {
  min-width: 0;
}
.card {
  background: white;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  padding: 32px;
  margin: 0 0 24px;
  box-shadow: var(--shadow);
}
.card-label {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  color: var(--green);
}
.step-index {
  display: inline-flex;
  padding: 3px 7px;
  background: #eee9fc;
  border-radius: 5px;
  letter-spacing: 0;
}
.card h2 {
  font-size: 27px;
  margin: 17px 0 10px;
}
.card-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin: 0 0 26px;
}
.input-mode-toggle {
  display: flex;
  gap: 5px;
  padding: 5px;
  border-radius: 11px;
  background: #f2f0f7;
  margin: 24px 0 !important;
}
.input-mode-toggle .radio-label {
  flex: 1;
  justify-content: center;
  padding: 10px 8px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
}
.input-mode-toggle .radio-label:has(:checked) {
  background: white;
  color: var(--green);
  font-weight: 700;
  box-shadow: 0 2px 5px #3123480a;
}
.radio-label {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
}
.radio-label input {
  width: 16px;
  height: 16px;
  accent-color: var(--green);
  flex-shrink: 0;
}
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 21px 18px;
}
.field-row label,
.paste-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 8px;
}
select,
input[type="text"],
input[type="number"] {
  width: 100%;
  height: 51px;
  border: 1px solid #dedbe8;
  border-radius: 10px;
  padding: 0 13px;
  color: var(--ink);
  background: #fff;
  min-width: 0;
  font-size: 14px;
}
select:disabled {
  background: #f6f5f9;
  color: #938d9f;
}
input::placeholder,
textarea::placeholder {
  color: #9a94a6;
}
#bloco-codigo {
  border: 0 !important;
  margin-top: 0 !important;
  padding-top: 0 !important;
}
#bloco-cascata[inert] {
  display: none;
}
.btn-primary,
.btn-secondary,
.choice-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: 47px;
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 13px 21px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}
.btn-primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 5px 13px #6547de15;
}
.btn-primary:hover {
  background: #5434c9;
  box-shadow: 0 8px 18px #6547de22;
}
.btn-secondary {
  background: white;
  color: var(--green);
  border-color: #ded6f4;
}
.btn-secondary:hover {
  background: #f4f0ff;
}
.choice-row {
  display: flex;
  gap: 14px;
}
.choice-btn {
  flex: 1;
  background: #f3effe;
  border-color: #e1d8f7;
  color: var(--green);
  min-height: 70px;
  font-size: 17px;
}
.choice-btn.selected {
  background: var(--green);
  color: white;
}
#btn-carregar {
  width: 100%;
  margin-top: 26px;
}
#btn-calcular {
  min-width: 245px;
  margin-top: 18px;
}
.hint {
  font-size: 13px;
  margin: 13px 0 0;
}
.hint:empty {
  display: none;
}
.error {
  color: var(--danger);
}
.ok {
  color: #247050;
}
.alerta {
  color: #936016;
}
.workspace-aside {
  display: grid;
  gap: 17px;
}
.aside-tip {
  background: #ebe5fc;
  border: 1px solid #e1d8f7;
  border-radius: 22px;
  padding: 27px;
}
.aside-icon {
  display: block;
  font-size: 40px;
  line-height: 1;
  color: var(--green);
  margin-bottom: 22px;
}
.aside-tip .eyebrow {
  font-size: 9px;
}
.aside-tip h2 {
  font-size: 23px;
  margin: 12px 0 24px;
  letter-spacing: -0.8px;
}
.aside-tip ol {
  padding: 0;
  list-style: none;
  counter-reset: guide;
}
.aside-tip li {
  position: relative;
  counter-increment: guide;
  padding-left: 31px;
  margin: 20px 0;
  font-size: 12px;
}
.aside-tip li:before {
  content: "0" counter(guide);
  position: absolute;
  left: 0;
  top: 1px;
  color: #8b75bb;
  font-size: 10px;
  font-weight: 700;
}
.aside-tip b,
.aside-tip li span {
  display: block;
}
.aside-tip li span {
  color: #756687;
  font-size: 12px;
  margin-top: 5px;
}
.aside-tip > a {
  font-size: 12px;
  font-weight: 700;
  color: #614593;
  display: block;
  border-top: 1px solid #d8cdef;
  padding-top: 18px;
  text-decoration: none;
}
.aside-note {
  display: flex;
  gap: 13px;
  padding: 17px 21px;
  border: 1px solid #e9e1d8;
  background: #fff8ee;
  border-radius: 15px;
}
.aside-note > span {
  font-size: 25px;
  color: #af754b;
}
.aside-note p {
  font-size: 12px;
  color: #89745d;
  margin: 0;
}
.aside-note b {
  display: block;
  color: #695541;
  margin-bottom: 4px;
}
.info-precisao {
  border: 1px solid #d9e8df;
  background: #f1f8f3;
  border-radius: 12px;
  padding: 0 16px;
  margin: 22px 0;
}
.info-precisao details {
  border: 0;
}
.precisao-badge,
.precisao-label {
  font-size: 12px;
}
.precisao-grid {
  display: flex;
  gap: 30px;
  margin: 12px 0;
  flex-wrap: wrap;
}
.precisao-item span {
  display: block;
}
.precisao-label {
  color: #69796f;
}
.precisao-valor {
  font-size: 24px;
  font-weight: 700;
  color: #287552;
}
.precisao-obs {
  font-size: 12px;
  line-height: 1.6;
  margin-bottom: 16px;
}
.optional-panel {
  border: 1px solid var(--paper-line);
  background: #faf9fc;
  padding: 0 18px;
  border-radius: 12px;
  margin: 20px 0;
}
details {
  border-bottom: 1px solid var(--paper-line);
}
summary {
  font-size: 14px;
  font-weight: 600;
  list-style: none;
  padding: 18px 27px 18px 0;
  position: relative;
}
summary:after {
  content: "+";
  position: absolute;
  right: 1px;
  top: 15px;
  font-size: 22px;
  line-height: 1.3;
  color: var(--green);
  font-weight: 400;
}
details[open] > summary:after {
  content: "−";
}
summary::-webkit-details-marker {
  display: none;
}
details p,
details li {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}
details p {
  margin-top: 0;
  padding-bottom: 10px;
}
details ul {
  padding-left: 23px;
}
details li {
  margin: 10px 0;
}
.paste-label {
  margin-top: 10px;
}
.paste-row {
  display: flex;
  gap: 10px;
  margin: 15px 0;
  flex-wrap: wrap;
}
textarea {
  width: 100%;
  min-height: 105px;
  resize: vertical;
  border: 1px solid #dcd7e7;
  border-radius: 10px;
  padding: 14px;
  font:
    15px/1.7 ui-monospace,
    monospace;
  color: var(--ink);
  background: white;
}
.input-help {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
}
.paste-options {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 18px 0;
}
.paste-options label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
}
.paste-options input {
  width: 130px;
}
.correction-toggle {
  padding: 14px 16px;
  border: 1px solid var(--paper-line);
  border-radius: 10px;
  margin-top: 22px;
}
.answer-progress {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--green);
  margin: 22px 0 10px;
}
progress {
  height: 8px;
  width: 160px;
  border: 0;
  border-radius: 20px;
  overflow: hidden;
  accent-color: var(--green);
}
progress::-webkit-progress-bar {
  background: #ece6fa;
}
progress::-webkit-progress-value {
  background: var(--green);
}
.correction-legend {
  display: none;
  font-size: 12px;
  color: var(--muted);
  margin: 12px 0;
}
.correction-legend span {
  margin-left: 12px;
}
#step-respostas:has(#check-correcao:checked) .correction-legend {
  display: block;
}
.bubble-sheet {
  display: grid;
  grid-auto-flow: column;
  gap: 0 24px;
  margin: 20px 0;
}
.bubble-row,
.bubble-row.answered {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 9px 7px;
  background: #fcfbff;
  border-bottom: 1px solid #ebe6f5;
  break-inside: avoid;
}
.bubble-row.stripe,
.bubble-row.stripe.answered {
  background: #f0edf8;
}
.bubble-qnum {
  min-width: 29px;
  font-size: 13px;
  font-weight: 700;
  color: #7a7189;
  font-variant-numeric: tabular-nums;
}
.bubble {
  height: 38px;
  width: 38px;
  flex-shrink: 0;
  display: inline-grid;
  place-items: center;
  border: 1px solid #d7d0e6;
  border-radius: 50%;
  padding: 0;
  background: #fff;
  color: #7d728b;
  font-size: 13px;
}
.bubble:hover {
  border-color: var(--green);
  background: #ebe5ff;
}
.bubble.filled {
  background: var(--green);
  color: white;
  border-color: var(--green);
  box-shadow: 0 2px 7px #6547de22;
}
.blank-bubble {
  border-style: dashed;
}
.blank-bubble.filled {
  background: #ded8e9;
  color: #524765;
  border-color: #b7adc8;
  box-shadow: none;
}
.mostrar-gabarito .bubble[data-is-correct="true"] {
  background: #e1f5e9;
  color: #217448;
  border: 2px solid #369667;
}
.mostrar-gabarito .bubble.filled[data-is-correct="true"] {
  background: #267c51;
  color: white;
}
.mostrar-gabarito .bubble.filled[data-is-correct="false"] {
  background: #ffedf1;
  color: #b12e4d;
  border: 2px dashed #c63d60;
}
.calculator-layout:has(#step-identificacao.hidden) {
  grid-template-columns: 1fr;
}
.calculator-layout:has(#step-identificacao.hidden) .workspace-aside {
  display: none;
}
.calculator-page:has(#step-identificacao.hidden) .hero-visual {
  display: none;
}
.calculator-page:has(#step-identificacao.hidden) .calculator-intro {
  display: none;
}
.calculator-page:has(#step-identificacao.hidden) .workspace-title {
  margin-top: 30px;
}
.result-kicker {
  font-size: 11px;
  color: var(--green);
  letter-spacing: 1.5px;
  margin-top: 27px;
}
.score-block {
  position: relative;
  border-radius: 18px;
  padding: 30px;
  background: linear-gradient(115deg, #eee7ff, #f4f0ff 70%, #e9f3e4);
  margin: 15px 0 24px;
  overflow: hidden;
}
.score-main {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.score-label {
  flex-basis: 100%;
  font-size: 16px;
}
.score-number {
  font:
    800 90px/1.3 Manrope,
    system-ui,
    sans-serif;
  letter-spacing: -5px;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}
.score-unit {
  font-size: 17px;
  color: #847598;
}
.score-theta {
  font-size: 14px;
  color: #685b7d;
  margin-top: 10px;
}
.technical-details {
  max-width: 460px;
}
.technical-details summary {
  font-size: 12px;
  padding-block: 10px;
}
.technical-details summary:after {
  top: 8px;
}
.technical-details p {
  font-size: 13px;
  margin: 0;
}
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
#result-precision {
  padding: 20px;
  margin-bottom: 24px;
}
#result-precision h3 {
  font-size: 17px;
  margin: 0 0 10px;
}
#result-precision p {
  font-size: 13px;
  margin: 8px 0;
  color: #627769;
}
.delta-table {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 30px;
  margin-bottom: 22px;
}
.delta-row {
  display: grid;
  grid-template-columns: 40px 1fr 125px;
  gap: 10px;
  align-items: center;
  border-bottom: 1px solid var(--paper-line);
  padding: 12px 0;
  font-size: 13px;
}
.delta-bar-wrap {
  height: 7px;
  background: #eeeaf5;
  border-radius: 10px;
  overflow: hidden;
}
.delta-bar {
  display: block;
  height: 100%;
  border-radius: 10px;
}
.delta-bar.acerto {
  background: #51a883;
}
.delta-bar.erro {
  background: #a486e9;
}
.delta-value {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.delta-badge {
  font-size: 10px;
  padding: 3px 5px;
  border-radius: 5px;
  margin-left: 4px;
}
.delta-badge.acerto {
  background: #e3f5e9;
  color: #276c49;
}
.delta-badge.erro {
  background: #efe5fb;
  color: #855aa9;
}
.loading {
  padding: 15px;
  font-size: 13px;
  color: var(--muted);
}
.spinner {
  display: inline-block;
  height: 15px;
  width: 15px;
  border: 2px solid #e6dff7;
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.bottom-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 25px;
  margin: 18px 0 28px;
  font-size: 13px;
}
.bottom-links p {
  margin: 0;
  color: var(--muted);
}
.bottom-links a {
  color: var(--green);
  font-weight: 600;
}
.privacy-note {
  margin-bottom: 45px;
  background: transparent;
}
.privacy-note p {
  font-size: 12px;
}
.privacy-note summary {
  font-size: 12px;
}
footer {
  border-top: 1px solid var(--paper-line);
  background: #f0eef6;
  padding: 35px max(32px, calc((100vw - 1240px) / 2));
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 28px;
  align-items: start;
}
footer p {
  font-size: 13px;
  color: var(--muted);
  margin: 12px 0;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}
.footer-contact strong {
  font-size: 14px;
}
.footer-contact a {
  color: #75678c;
  text-decoration: none;
}
.footer-contact a:hover {
  text-decoration: underline;
}
footer small {
  width: 100%;
  font-size: 11px;
  color: #8d859b;
  padding-top: 18px;
  border-top: 1px solid #e1ddeb;
}
.learning-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0 0 30px;
}
.learning-nav a {
  font-size: 12px;
  padding: 9px 15px;
  background: white;
  border: 1px solid var(--paper-line);
  border-radius: 25px;
  color: var(--green);
  text-decoration: none;
  font-weight: 600;
}
.learning-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}
.learning-page .card > p {
  color: var(--muted);
  font-size: 15px;
}
.tinted {
  background: #efe9fc;
  border-color: #e2d7f7;
}
.parameter-list {
  font-size: 14px;
}
.parameter-list div {
  margin: 18px 0;
}
.parameter-list dt {
  font-weight: 700;
  color: #614394;
}
.parameter-list dd {
  margin: 6px 0;
  color: #82718e;
}
.section-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 30px;
}
.section-heading p {
  font-size: 14px;
  max-width: 730px;
  color: var(--muted);
}
.section-heading .btn-secondary {
  white-space: nowrap;
}
.chart-layout {
  display: grid;
  grid-template-columns: 255px minmax(0, 1fr);
  gap: 30px;
  margin-top: 25px;
}
.chart-controls {
  background: #f6f3fd;
  border: 1px solid #ece4fa;
  border-radius: 14px;
  padding: 24px;
}
.chart-controls label {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
}
.chart-controls output {
  color: var(--green);
  font-variant-numeric: tabular-nums;
}
.chart-controls input {
  width: 100%;
  accent-color: var(--green);
  min-height: 30px;
}
.chart-controls p {
  font-size: 11px !important;
  color: #8c7d9e;
  margin: 0 0 22px;
}
.chart-controls p:last-child {
  margin: 0;
}
.chart-display {
  min-width: 0;
}
.chart-readout {
  padding: 15px 20px;
  border-radius: 12px;
  background: #ede8ff;
  color: #604196 !important;
  font-size: 14px !important;
}
.curve-toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 18px;
}
.curve-mode {
  border: 1px solid #e0d6f3;
  background: #f7f3ff;
  color: #6c528c;
  border-radius: 8px;
  padding: 10px 15px;
  font-size: 12px;
  font-weight: 600;
}
.curve-mode.active {
  background: var(--green);
  color: white;
  border-color: var(--green);
}
#tri-chart-direct {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}
#tri-chart-direct text {
  font:
    14px "DM Sans",
    system-ui,
    sans-serif;
  fill: #82718e;
}
#curve-hit {
  cursor: move;
  touch-action: none;
  pointer-events: stroke;
}
#curve-hit:focus-visible {
  stroke: #b29be85c;
  outline: 0;
}
#tri-chart-direct.scaling #curve-hit {
  cursor: ew-resize;
}
#tri-chart-direct.dragging #curve-hit {
  cursor: grabbing;
}
#theta-line {
  pointer-events: none;
  stroke-width: 2;
  stroke-opacity: 1;
}
#theta-dot {
  cursor: ew-resize;
  touch-action: none;
}
#theta-dot:focus-visible {
  stroke: #412b76;
  stroke-width: 4;
  outline: 0;
}
.question-collection {
  border: 0;
  background: #f7f4fc;
  border-radius: 12px;
  padding: 0 18px;
  margin-top: 18px;
}
.question-collection > summary {
  color: var(--green);
  font-weight: 700;
}
.question-count {
  font-size: 11px;
  font-weight: 400;
  margin-left: 10px;
  color: var(--muted);
}
.question-list {
  padding-bottom: 18px;
}
.question-list details {
  background: white;
  padding: 0 16px;
  border: 1px solid var(--paper-line);
  margin: 8px 0;
  border-radius: 10px;
}
.math-block {
  overflow-x: auto;
  padding: 24px 16px;
  border-radius: 12px;
  background: #f3effc;
  margin: 20px 0;
}
.math-block math {
  font-family: "STIX Two Math", "Cambria Math", math;
  font-size: 1.25em;
  min-width: max-content;
  margin: 0 auto;
}
.worked-example {
  padding: 20px 24px;
  border-left: 4px solid #8d6de0;
  background: #f3effc;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
}
.worked-example h3 {
  margin-top: 0;
}
.worked-example p {
  font-size: 14px;
  color: var(--muted);
}
.table-scroll {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th,
td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid var(--paper-line);
}
th {
  background: #f5f1fb;
}
caption {
  text-align: left;
  font-size: 12px;
  padding: 12px;
  color: var(--muted);
}
.page-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  border-radius: 20px;
  padding: 32px;
  background: #ebe4fc;
  margin: 28px 0 45px;
}
.page-cta h2 {
  font-size: 26px;
  margin: 0 0 10px;
}
.page-cta p {
  font-size: 14px;
  color: #8c7d9e;
  margin: 0;
}
.page-cta .btn-primary {
  white-space: nowrap;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
}
.contact-primary {
  background: #e9f4eb;
  border-color: #dce9df;
}
.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 45px;
  height: 45px;
  font-size: 26px;
  border-radius: 13px;
}
.feature-icon.green {
  background: #d4e9d9;
  color: #357659;
}
.feature-icon.purple {
  background: #e0d3f8;
  color: #815db5;
}
.contact-primary h2,
.contact-grid h2 {
  margin-top: 25px;
}
.contact-grid p {
  font-size: 14px;
  color: var(--muted);
}
.contact-email {
  font-size: clamp(17px, 2vw, 27px);
  font-weight: 700;
  color: #2d7757;
  display: block;
  overflow-wrap: anywhere;
  margin: 24px 0;
}
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.contact-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid #ddd1ef;
  text-decoration: none;
}
.contact-link strong {
  font-size: 16px;
}
.contact-link span {
  color: #8a769e;
  font-size: 13px;
}
.contact-link:hover strong {
  color: var(--green);
}
.faq-page h2 {
  margin-bottom: 24px;
}
.noscript-note {
  padding: 20px;
  background: #fff0dd;
  color: #83501d;
  text-align: center;
}
@media (min-width: 1500px) {
  .topbar,
  main,
  .page-intro {
    max-width: 1380px;
  }
  .calculator-layout {
    grid-template-columns: minmax(0, 1fr) 325px;
  }
  .calculator-intro {
    gap: 100px;
  }
  footer {
    padding-inline: max(32px, calc((100vw - 1380px) / 2));
  }
}
@media (max-width: 1050px) {
  .nav-note {
    display: none;
  }
  .calculator-intro {
    gap: 25px;
    grid-template-columns: 1.2fr 1fr;
  }
  .calculator-intro h1 {
    font-size: 43px;
  }
  .visual-card {
    width: 270px;
  }
  .visual-orbit {
    width: 275px;
    height: 275px;
  }
  .visual-star {
    right: 0;
  }
  .visual-sticker {
    right: -5px;
  }
  .calculator-layout {
    grid-template-columns: minmax(0, 1fr) 255px;
    gap: 20px;
  }
  .aside-tip {
    padding: 23px;
  }
  .card {
    padding: 27px;
  }
  .chart-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 18px;
  }
  .chart-controls {
    padding: 19px;
  }
  .hero-actions {
    gap: 18px;
  }
  .hero-tags {
    gap: 8px 12px;
  }
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 800px) {
  .topbar,
  main,
  .page-intro {
    width: calc(100% - 40px);
  }
  .calculator-intro {
    grid-template-columns: 1fr;
    padding: 36px 0 24px;
  }
  .hero-visual {
    display: none;
  }
  .calculator-intro h1 {
    font-size: 48px;
  }
  .hero-copy > p {
    max-width: 590px;
  }
  .workspace-aside {
    display: none;
  }
  .calculator-layout {
    grid-template-columns: 1fr;
  }
  .card {
    padding: 26px;
  }
  .page-intro h1 {
    font-size: 44px;
  }
  .learning-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .section-heading {
    display: block;
  }
  .section-heading .btn-secondary {
    margin-top: 8px;
  }
  .chart-layout {
    grid-template-columns: 1fr;
  }
  .chart-display {
    grid-row: 1;
  }
  .chart-controls {
    display: grid;
    grid-template-columns: 1fr;
  }
  .delta-table {
    grid-template-columns: 1fr;
  }
  .page-cta {
    align-items: start;
  }
  .nav-links a {
    padding: 10px 14px;
  }
  .brand {
    font-size: 24px;
  }
  .brand-icon {
    width: 38px;
    height: 38px;
  }
  .brand-sub {
    font-size: 7px;
  }
  .session-bar {
    font-size: 12px;
  }
  footer {
    padding: 30px 20px;
  }
  .contact-email {
    font-size: 27px;
  }
}
@media (max-width: 540px) {
  .topbar,
  main,
  .page-intro {
    width: calc(100% - 32px);
  }
  .topbar {
    flex-wrap: wrap;
    padding: 20px 0 16px;
    gap: 18px;
    justify-content: center;
  }
  .brand {
    font-size: 26px;
  }
  .brand-icon {
    width: 40px;
    height: 40px;
  }
  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 0;
  }
  .nav-links a {
    text-align: center;
    flex: 1;
    font-size: 12px;
    padding: 10px 8px;
  }
  .calculator-intro {
    padding: 30px 0 14px;
  }
  .page-intro h1,
  .calculator-intro h1 {
    font-size: 38px;
    letter-spacing: -1.7px;
  }
  .page-intro {
    padding: 30px 0 12px;
  }
  .page-intro p,
  .hero-copy > p {
    font-size: 15px;
    line-height: 1.75;
  }
  .hero-actions {
    gap: 18px;
    flex-wrap: wrap;
    margin-top: 23px;
  }
  .hero-actions .btn-primary {
    padding-inline: 18px;
  }
  .learn-link {
    font-size: 12px;
  }
  .hero-tags {
    font-size: 9px;
  }
  .workspace-title {
    margin: 27px 0 18px;
  }
  .workspace-title h2 {
    font-size: 23px;
  }
  .workspace-label {
    display: none;
  }
  .session-bar {
    padding: 12px;
    align-items: start;
    flex-direction: column;
    gap: 4px;
  }
  .session-bar > div {
    gap: 22px;
  }
  .journey {
    gap: 9px;
    margin-bottom: 20px;
  }
  .journey li {
    flex-direction: column;
    align-items: start;
    font-size: 10px;
    line-height: 1.4;
    gap: 9px;
    padding: 17px 0 14px;
  }
  .journey li span {
    width: 26px;
    height: 26px;
  }
  .card {
    padding: 22px 17px;
    border-radius: 16px;
  }
  .card h2 {
    font-size: 25px;
  }
  .card-desc {
    font-size: 13px;
  }
  .card-label {
    font-size: 9px;
  }
  .input-mode-toggle .radio-label {
    font-size: 11px;
    gap: 6px;
    padding: 10px 5px;
  }
  .input-mode-toggle .radio-label input {
    width: 13px;
    height: 13px;
  }
  .field-grid {
    gap: 17px 12px;
  }
  .field-row label {
    font-size: 12px;
  }
  select,
  input[type="text"],
  input[type="number"],
  textarea {
    font-size: 16px;
  }
  .btn-primary,
  .btn-secondary {
    font-size: 12px;
    padding: 13px 16px;
    min-height: 46px;
  }
  .hero-actions .btn-primary {
    font-size: 13px;
  }
  .optional-panel {
    padding-inline: 13px;
  }
  .paste-options {
    display: grid;
    grid-template-columns: 1fr;
  }
  .paste-options input {
    width: 100%;
  }
  .paste-row .btn-secondary {
    flex: 1;
  }
  .radio-label {
    font-size: 12px;
  }
  .correction-toggle {
    padding: 12px;
  }
  .answer-progress {
    font-size: 12px;
  }
  progress {
    width: 85px;
  }
  .bubble-row {
    padding: 9px 6px;
    gap: 4px;
  }
  .bubble {
    width: 39px;
    height: 39px;
    font-size: 14px;
  }
  .bubble-qnum {
    min-width: 24px;
    font-size: 12px;
  }
  .correction-legend span {
    display: block;
    margin-left: 0;
  }
  #btn-calcular {
    width: 100%;
    min-width: 0;
  }
  .score-number {
    font-size: 76px;
  }
  .score-label {
    font-size: 14px;
  }
  .score-block {
    padding: 23px 20px;
  }
  .score-unit {
    font-size: 14px;
  }
  .result-actions {
    flex-direction: column;
  }
  .result-actions button {
    width: 100%;
  }
  .delta-row {
    grid-template-columns: 31px 1fr 122px;
    gap: 7px;
    font-size: 12px;
  }
  .precisao-grid {
    gap: 18px;
  }
  .precisao-label {
    font-size: 11px;
  }
  .bottom-links {
    flex-direction: column;
    gap: 12px;
    font-size: 12px;
  }
  summary {
    font-size: 13px;
  }
  details p,
  details li {
    font-size: 13px;
  }
  .learning-nav {
    gap: 8px;
    margin-bottom: 24px;
  }
  .learning-nav a {
    font-size: 10px;
    padding: 8px 12px;
  }
  .learning-page .card > p {
    font-size: 14px;
  }
  .chart-controls label {
    font-size: 13px;
  }
  .chart-controls p {
    font-size: 12px !important;
  }
  .chart-readout {
    font-size: 13px !important;
  }
  .curve-mode {
    flex: 1;
    font-size: 11px;
    padding: 10px 8px;
  }
  .question-collection {
    padding-inline: 12px;
  }
  .question-count {
    display: block;
    margin: 5px 0 0;
  }
  .question-list details {
    padding-inline: 12px;
  }
  .math-block {
    padding: 22px 12px;
  }
  .math-block math {
    font-size: 1.05em;
  }
  .page-cta {
    flex-direction: column;
    padding: 25px;
    gap: 15px;
  }
  .page-cta h2 {
    font-size: 23px;
  }
  .contact-email {
    font-size: 23px;
  }
  .contact-actions {
    flex-direction: column;
  }
  footer {
    flex-direction: column;
    gap: 22px;
  }
  footer small {
    font-size: 10px;
  }
  .privacy-note {
    margin-bottom: 30px;
  }
}
@media (max-width: 360px) {
  .field-grid {
    grid-template-columns: 1fr;
  }
  .bubble {
    width: 32px;
    height: 35px;
  }
  .bubble-row {
    gap: 3px;
  }
  .bubble-qnum {
    min-width: 20px;
  }
  .hero-actions {
    gap: 12px;
  }
  .page-intro h1,
  .calculator-intro h1 {
    font-size: 34px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
  }
}
@media print {
  body {
    background: white;
    color: #111;
    font-size: 12pt;
  }
  .topbar,
  .calculator-intro,
  .workspace-title,
  .session-bar,
  .journey,
  .workspace-aside,
  .bottom-links,
  .privacy-note,
  footer,
  .result-actions,
  .skip-link,
  #export-status {
    display: none !important;
  }
  main {
    width: 100%;
    max-width: none;
  }
  .calculator-layout {
    display: block;
  }
  .card {
    box-shadow: none;
    border: 0;
    padding: 0;
  }
  .score-block {
    border: 1px solid #ccc;
    background: white;
  }
  .score-number {
    color: #111;
  }
  .exam-summary {
    background: white;
  }
  .delta-table {
    display: block;
  }
  .delta-row {
    break-inside: avoid;
  }
  .score-block,
  #result-precision {
    break-inside: avoid;
  }
  .optional-panel {
    background: white;
  }
  a {
    text-decoration: none;
  }
}

/* Sobre, precisão e navegação entre etapas. */
.journey li {
  padding: 0;
}
.journey button {
  display: flex;
  align-items: center;
  gap: 11px;
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  padding: 20px 0 17px;
  border-radius: 8px;
}
.journey button:hover {
  background: #ede8ff;
  transform: none;
}
.journey button:focus-visible {
  outline-offset: 0;
}
.journey button[aria-current="step"] {
  font-weight: 700;
}
#journey-status:empty {
  display: none;
}
#journey-status:not(:empty) {
  margin: -10px 0 22px;
  color: var(--green);
}
.info-precisao.precision-warning {
  background: #fff0f2;
  border-color: #efb8c4;
  color: #8f243f;
}
.precision-warning summary,
.precision-warning summary:after,
.precision-warning .precisao-valor,
.precision-warning .precisao-label,
.precision-warning .precisao-obs {
  color: #982d45;
}
.precision-warning .precisao-badge {
  color: #85273c;
}
#result-precision {
  padding: 19px 22px;
  max-width: 760px;
  border-left: 4px solid #5b9d78;
}
#result-precision.precision-warning {
  border-left-color: #cb4e6b;
}
#result-precision h3 {
  font-size: 16px;
  letter-spacing: -0.25px;
  margin: 0 0 13px;
}
#result-precision .result-precision-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 13px 36px;
}
#result-precision .result-precision-metrics > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
#result-precision .result-precision-metrics span {
  font-size: 12px;
  color: #627769;
}
#result-precision .result-precision-metrics strong {
  font-size: 20px;
  color: #276e4b;
  font-variant-numeric: tabular-nums;
}
#result-precision p {
  font-size: 12px;
  line-height: 1.65;
  margin: 12px 0 0;
}
#result-precision.precision-warning h3,
#result-precision.precision-warning p,
#result-precision.precision-warning .result-precision-metrics span,
#result-precision.precision-warning .result-precision-metrics strong {
  color: #942d46;
}
.delta-table {
  align-items: start;
}
.delta-column {
  min-width: 0;
}
.about-page .card > p,
.about-timeline p {
  font-size: 15px;
  color: var(--muted);
}
.editorial-placeholder {
  border: 1px dashed #b9a0e6;
  background: #f6f0ff;
  padding: 14px 16px;
  border-radius: 10px;
  color: #735492 !important;
  font-size: 12px !important;
  line-height: 1.8;
}
.about-timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  margin-top: 28px;
}
.about-timeline article > span {
  display: inline-grid;
  place-items: center;
  background: #ede6fc;
  color: var(--green);
  width: 35px;
  height: 35px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 12px;
}
.support-card {
  border-left: 5px solid var(--green);
  background: #f5f1fc;
}
.about-page .contact-actions {
  margin-top: 24px;
}
.about-page h3 {
  font-size: 19px;
}
@media (max-width: 1050px) {
  .nav-links a {
    padding-inline: 12px;
  }
  .nav-note {
    display: none;
  }
}
@media (max-width: 800px) {
  .about-timeline {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .delta-table {
    gap: 0;
  }
  .nav-links a {
    padding-inline: 10px;
    font-size: 12px;
  }
}
@media (max-width: 540px) {
  .journey li {
    padding: 0;
  }
  .journey button {
    flex-direction: column;
    align-items: start;
    gap: 9px;
    padding: 17px 2px 14px;
  }
  .nav-links {
    flex-wrap: wrap;
    border-radius: 14px;
  }
  .nav-links a {
    flex: 1 0 42%;
    padding: 10px 6px;
  }
  #result-precision {
    padding: 17px;
  }
  #result-precision .result-precision-metrics {
    gap: 12px 24px;
  }
  .about-page .card > p,
  .about-timeline p {
    font-size: 14px;
  }
}

/* Theme controls, answer import and impact exploration. */
.theme-toggle {
  flex-shrink: 0;
  border: 1px solid var(--paper-line);
  border-radius: 24px;
  padding: 9px 13px;
  background: var(--paper);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
}
.topbar {
  gap: 16px;
  flex-wrap: wrap;
  padding-block: 18px;
}
.paste-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 20px 0;
}
.paste-action {
  border: 1px solid var(--paper-line);
  border-radius: 12px;
  padding: 18px;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  align-items: start;
  gap: 10px;
  min-width: 0;
}
.paste-action h3 {
  margin: 0;
  font-size: 17px;
}
.paste-action p {
  margin: 0;
  padding: 0;
  font-size: 12px;
}
.paste-action label {
  font-size: 12px;
  font-weight: 700;
}
.paste-action button {
  margin-top: auto;
  width: 100%;
}
.paste-action input {
  max-width: 150px;
}
.impact-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.impact-controls label {
  flex: 1;
  min-width: 180px;
  font-size: 12px;
  font-weight: 700;
}
.impact-controls select {
  display: block;
  margin-top: 6px;
}
.metric-help {
  display: inline-block;
  position: relative;
  margin-left: 8px;
  vertical-align: middle;
  font:
    400 13px/1.6 "DM Sans",
    sans-serif;
  letter-spacing: 0;
}
.metric-help-button {
  display: inline-grid;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  color: var(--ink);
  font-weight: 700;
}
.metric-tooltip {
  display: none;
  position: absolute;
  z-index: 20;
  top: 100%;
  right: -12px;
  width: min(320px, 70vw);
  padding: 15px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--paper-line);
  border-radius: 12px;
  box-shadow: 0 8px 30px #0003;
  text-align: left;
}
.metric-help:not(.help-dismissed):is(:hover, :focus-within, .help-open) .metric-tooltip {
  display: block;
}
:root {
  color-scheme: light;
}
/* Night palette: neutral surfaces first, brand and semantic colors second.
   Surface levels distinguish page, cards and controls without tinting everything purple. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #edf0f6;
  --muted: #a3adbf;
  --green: #b6a5fa;
  --paper: #191f2b;
  --paper-line: #30394a;
  --purple: #28263e;
  --danger: #f3a3ad;
  --shadow: 0 12px 36px #05091230, inset 0 1px 0 #ffffff04;
  --night-bg: #10151e;
  --night-inset: #141a25;
  --night-raised: #222a38;
  --night-hover: #2b3444;
  --night-chart-fill: #34304d;
  --night-chart-line: #b6a5fa;
  --night-brand: #7c63df;
  --night-brand-hover: #8c72ed;
  --night-success: #8ed3b7;
  --night-warning: #e4c18c;
}
[data-theme="dark"] body {
  background: radial-gradient(ellipse 75% 550px at 75% 0, #25233d60, transparent), var(--night-bg);
}
[data-theme="dark"] .topbar {
  border-bottom-color: #ffffff0d;
}
[data-theme="dark"] .brand-icon {
  background: transparent;
  box-shadow: 0 5px 18px #0002;
}
[data-theme="dark"] .brand-accent {
  color: #c0afff;
}
[data-theme="dark"] .nav-links {
  background: #ffffff04;
  border: 1px solid #ffffff08;
}
[data-theme="dark"] .nav-links a {
  color: var(--muted);
}
[data-theme="dark"] .nav-links a[aria-current="page"] {
  background: #2a3040;
  color: var(--ink);
  box-shadow:
    0 2px 6px #0002,
    inset 0 1px 0 #ffffff08;
}
[data-theme="dark"] :is(.nav-links a:hover, .journey button:hover) {
  background: #ffffff07;
  color: var(--ink);
}
[data-theme="dark"] .theme-toggle {
  background: transparent;
  color: #c2c9d6;
  border-color: #394153;
}
[data-theme="dark"] .theme-toggle:hover {
  background: var(--night-raised);
}
[data-theme="dark"] .card {
  background: var(--paper);
  border-color: #2b3342;
}
[data-theme="dark"] :is(.optional-panel, .question-collection, .input-mode-toggle) {
  background: var(--night-inset);
  border-color: #2b3342;
}
[data-theme="dark"] :is(.paste-action, .question-list details) {
  background: #1c2330;
  border-color: #30394a;
  box-shadow: 0 2px 8px #0000000a;
}
[data-theme="dark"] :is(textarea, select, input[type="text"], input[type="number"]) {
  background: #111722;
  border-color: #394355;
  color: var(--ink);
  box-shadow: inset 0 1px 3px #00000014;
}
[data-theme="dark"] :is(input, textarea)::placeholder {
  color: #8390a5;
}
[data-theme="dark"] select:disabled {
  background: #181e29;
  color: #8893a5;
  border-color: #2c3443;
}
[data-theme="dark"] .input-mode-toggle .radio-label:has(:checked) {
  background: #2a3040;
  color: var(--ink);
  box-shadow:
    inset 0 1px 0 #ffffff08,
    0 2px 5px #0002;
}
[data-theme="dark"] .btn-primary {
  background: linear-gradient(180deg, #795bd5, #694bc2);
  color: #fff;
  border-color: #a38beb44;
  box-shadow:
    inset 0 1px 0 #ffffff15,
    0 4px 12px #080c1426;
}
[data-theme="dark"] .btn-primary:hover {
  background: linear-gradient(180deg, #8061da, #7253cc);
  box-shadow: 0 5px 16px #080c1440;
}
[data-theme="dark"] :is(.btn-secondary, .choice-btn, .curve-mode, .learning-nav a) {
  background: var(--night-raised);
  color: #ded8f5;
  border-color: #42475d;
}
[data-theme="dark"]
  :is(.btn-secondary:hover, .choice-btn:hover, .curve-mode:hover, .learning-nav a:hover) {
  background: #30364a;
  border-color: #70628e;
}
[data-theme="dark"] :is(.choice-btn.selected, .curve-mode.active) {
  background: #6750bb;
  color: #fff;
  border-color: #9c84e5;
}
[data-theme="dark"] :focus-visible {
  outline-color: #b8a4ff;
}
[data-theme="dark"] .step-index {
  background: #b6a5fa12;
  color: #c5b6fb;
}
[data-theme="dark"] .journey li {
  color: #949fb2;
}
[data-theme="dark"] .journey li span {
  background: #232b39;
  color: #aeb8c9;
}
[data-theme="dark"] .journey li.active {
  color: #d4c8ff;
  border-color: #a58ae9;
}
[data-theme="dark"] .journey li.active span {
  background: #7860cd;
  color: #fff;
  box-shadow: 0 0 0 5px #9c84e512;
}
[data-theme="dark"] .journey li.complete span {
  background: #20362f;
  color: #a2d7bf;
}
[data-theme="dark"] .session-bar {
  background: #192623;
  border-color: #2b3d37;
  color: #a6c2b6;
}
[data-theme="dark"] .exam-summary {
  background: #1e2532;
  color: #c1c9d8;
  border: 1px solid #30394a;
}

/* Illustration: a quiet violet halo, a raised card, and a muted sage sticker. */
[data-theme="dark"] .visual-orbit {
  background: radial-gradient(ellipse, #54417e55, #29273e44);
}
[data-theme="dark"] .visual-orbit:after {
  border-color: #70608f38;
}
[data-theme="dark"] .visual-card {
  background: linear-gradient(145deg, #272d3e, #1c2230);
  border-color: #45465c;
  box-shadow: 0 24px 55px #05070d55;
}
[data-theme="dark"] .visual-bars {
  border-color: #ffffff0d;
}
[data-theme="dark"] .visual-bars i {
  background: #5e527e;
}
[data-theme="dark"] .visual-bars i:nth-child(2),
[data-theme="dark"] .visual-bars i:nth-child(3) {
  background: #746294;
}
[data-theme="dark"] .visual-bars i:nth-child(4) {
  background: #8971b3;
}
[data-theme="dark"] .visual-bars i:nth-child(5) {
  background: #9d81cf;
}
[data-theme="dark"] .visual-bars i:nth-child(6) {
  background: #b49ae7;
}
[data-theme="dark"] .visual-bars i:nth-child(7) {
  background: #b2cdb5;
}
[data-theme="dark"] .visual-sticker {
  background: #bed1b4;
  color: #25352b;
  box-shadow: 0 8px 24px #0003;
}
[data-theme="dark"] .visual-star {
  color: #c99d91;
}
[data-theme="dark"] .visual-caption {
  color: #9b9fb1;
}
[data-theme="dark"] :is(.aside-tip, .tinted, .support-card, .page-cta) {
  background: linear-gradient(135deg, #25273c, #1e2532);
  border-color: #3b3b52;
}
[data-theme="dark"] :is(.aside-tip li span, .aside-tip > a, .page-cta p) {
  color: #b1b7cb;
}
[data-theme="dark"] .aside-tip > a {
  border-color: #424159;
}
[data-theme="dark"] .aside-tip li:before {
  color: #a798c8;
}
[data-theme="dark"] .aside-note {
  background: #26241f;
  border-color: #423c30;
}
[data-theme="dark"] .aside-note p {
  color: #bbb3a3;
}
[data-theme="dark"] :is(.aside-note b, .aside-note > span, .alerta) {
  color: var(--night-warning);
}

/* Answer states stay distinct from general controls and background surfaces. */
[data-theme="dark"] :is(.bubble-row, .bubble-row.answered) {
  background: #181f2b;
  border-color: #2c3544;
}
[data-theme="dark"] :is(.bubble-row.stripe, .bubble-row.stripe.answered) {
  background: #202836;
}
[data-theme="dark"] .bubble-qnum {
  color: #adb8ca;
}
[data-theme="dark"] .bubble {
  background: #161d29;
  border-color: #465064;
  color: #bfc8d7;
}
[data-theme="dark"] .bubble:hover {
  background: #353048;
  border-color: #a18acb;
}
[data-theme="dark"] .bubble.filled {
  background: #7560ca;
  color: white;
  border-color: #af99ec;
  box-shadow: 0 2px 6px #0002;
}
[data-theme="dark"] .blank-bubble.filled {
  background: #343e4f;
  color: #e1e6ef;
  border-color: #657187;
  box-shadow: none;
}
[data-theme="dark"] .mostrar-gabarito .bubble[data-is-correct="true"] {
  background: #203b32;
  border-color: #6cb898;
  color: #b7ead4;
}
[data-theme="dark"] .mostrar-gabarito .bubble.filled[data-is-correct="true"] {
  background: #356f58;
  border-color: #87d1ae;
  color: #fff;
}
[data-theme="dark"] .mostrar-gabarito .bubble.filled[data-is-correct="false"] {
  background: #452c36;
  border-color: #d78798;
  color: #ffd2da;
}
[data-theme="dark"] progress::-webkit-progress-bar {
  background: #2e3747;
}

/* Results: the score carries the brand; validation remains a supporting detail. */
[data-theme="dark"] .score-block {
  background:
    radial-gradient(ellipse at 100% 0, #62548130, transparent 70%),
    linear-gradient(120deg, #262b40, #1c2533);
  border: 1px solid #42415a;
  box-shadow: inset 0 1px 0 #ffffff06;
}
[data-theme="dark"] .score-number {
  color: #d3c5ff;
}
[data-theme="dark"] :is(.score-unit, .score-theta) {
  color: #b0b6ca;
}
[data-theme="dark"] .info-precisao {
  background: #1b2728;
  border-color: #334441;
}
[data-theme="dark"] #result-precision {
  border-left-color: #6eac93;
}
[data-theme="dark"] :is(.precisao-label, #result-precision .result-precision-metrics span) {
  color: #a7bab5;
}
[data-theme="dark"] :is(.precisao-valor, #result-precision .result-precision-metrics strong, .ok) {
  color: #a7d9c3;
}
[data-theme="dark"] :is(.precisao-obs, #result-precision p) {
  color: #a7bab5;
}
[data-theme="dark"] .precisao-badge {
  color: #c0d4cd;
}
[data-theme="dark"] .info-precisao.precision-warning {
  background: #2d252a;
  border-color: #5b3e49;
}
[data-theme="dark"] #result-precision.precision-warning {
  border-left-color: #c58292;
}
[data-theme="dark"]
  :is(
    .precision-warning summary,
    .precision-warning summary:after,
    .precision-warning .precisao-valor,
    .precision-warning .precisao-label,
    .precision-warning .precisao-obs,
    .precision-warning .precisao-badge,
    #result-precision.precision-warning h3,
    #result-precision.precision-warning p,
    #result-precision.precision-warning .result-precision-metrics span,
    #result-precision.precision-warning .result-precision-metrics strong
  ) {
  color: #edb5c0;
}
[data-theme="dark"] .metric-tooltip {
  background: #283140;
  border-color: #566174;
  color: #e3e8f1;
  box-shadow: 0 10px 30px #0005;
}
[data-theme="dark"] .delta-bar-wrap {
  background: #2b3443;
}
[data-theme="dark"] .delta-bar.acerto {
  background: #78b69c;
}
[data-theme="dark"] .delta-bar.erro {
  background: #a08bcc;
}
[data-theme="dark"] .delta-badge.acerto {
  background: #263c33;
  color: #addac3;
}
[data-theme="dark"] .delta-badge.erro {
  background: #332d46;
  color: #d0c0ef;
}

/* Learning and contact use the same surface levels as the calculator. */
[data-theme="dark"] :is(.chart-controls, .math-block, .worked-example, th) {
  background: #202735;
  border-color: #343e50;
}
[data-theme="dark"] .chart-readout {
  background: #2b2c42;
  color: #d0c5ec !important;
}
[data-theme="dark"]
  :is(.parameter-list dd, .chart-controls p, .contact-link span, .footer-contact a, footer small) {
  color: var(--muted);
}
[data-theme="dark"] .parameter-list dt {
  color: #cabceb;
}
/* Keep the shared lilac fill readable on dark surfaces. */
[data-theme="dark"] .tinted {
  background: var(--night-chart-fill);
  border-color: #51476f;
}
[data-theme="dark"] #curve-area {
  fill: var(--night-chart-fill);
}
[data-theme="dark"] :is(#curve-path, #theta-line) {
  stroke: var(--night-chart-line);
}
[data-theme="dark"] #theta-dot {
  fill: var(--night-chart-line);
  stroke: var(--paper);
}
[data-theme="dark"] #tri-chart-direct text {
  fill: #a9b3c5;
}
[data-theme="dark"] #chart-grid line {
  stroke: #69768d;
}
[data-theme="dark"] .contact-primary {
  background: linear-gradient(130deg, #1e302c, #1c252c);
  border-color: #354c44;
}
[data-theme="dark"] .contact-email {
  color: #a5d7bf;
}
[data-theme="dark"] .feature-icon.green {
  background: #304c3e;
  color: #aed8bd;
}
[data-theme="dark"] .feature-icon.purple {
  background: #3b3151;
  color: #c9b5ef;
}
[data-theme="dark"] .contact-link {
  border-color: #3c374d;
}
[data-theme="dark"] .editorial-placeholder {
  background: #282335;
  border-color: #645477;
  color: #c9b8df !important;
}
[data-theme="dark"] footer {
  background: #121822;
  border-color: #2b3342;
}
[data-theme="dark"] footer small {
  border-color: #2b3342;
}
[data-theme="dark"] .skip-link {
  background: var(--night-raised);
}
[data-theme="dark"] .privacy-note {
  background: transparent;
}

@media (max-width: 600px) {
  .paste-actions {
    grid-template-columns: 1fr;
  }
  .topbar .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
  }
  .topbar {
    justify-content: space-between;
  }
  .nav-note {
    display: none;
  }
  .metric-tooltip {
    right: auto;
    left: -175px;
  }
}

/* Keep help text inside the precision panel, including narrow screens. */
.info-precisao {
  position: relative;
}
.metric-help {
  position: static;
}
.metric-tooltip {
  left: 16px;
  right: auto;
  width: calc(100% - 32px);
  max-width: 360px;
  top: auto;
  margin-top: 8px;
}

/* Compact information pages and the 2026 launch. */
.info-page .page-intro {
  padding-bottom: 12px;
  margin-bottom: 8px;
}
main.compact-page {
  max-width: 960px;
  margin-bottom: 48px;
}
.compact-page .card > :first-child {
  margin-top: 0;
}
.compact-page .card p:last-child {
  margin-bottom: 0;
}
.support-panel {
  background: var(--purple);
  border-color: var(--paper-line);
}
.support-panel p {
  color: var(--muted);
}
.launch-page main {
  max-width: 900px;
  margin-bottom: 56px;
}
.launch-card {
  text-align: center;
  padding: clamp(24px, 5vw, 56px);
}
.launch-card h1 {
  font-size: clamp(32px, 5vw, 54px);
  margin: 16px 0;
}
.launch-card > p {
  max-width: 580px;
  margin-inline: auto;
  color: var(--muted);
}
.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  max-width: 600px;
  margin: 32px auto;
  font-variant-numeric: tabular-nums;
}
.countdown-unit {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 8px;
  border: 1px solid var(--paper-line);
  border-radius: 14px;
  background: var(--purple);
  min-width: 0;
}
.countdown-unit :is(strong, .countdown-value) {
  font: 800 clamp(28px, 5vw, 46px)/1.2 Manrope, system-ui, sans-serif;
  color: var(--green);
}
.countdown-unit :is(span, small) {
  font-size: 12px;
  color: var(--muted);
}
.launch-status {
  color: var(--green);
  font-weight: 700;
}
.launch-card .contact-actions {
  justify-content: center;
  margin-top: 24px;
}
.launch-card time {
  font-variant-numeric: tabular-nums;
}

/* Distinguishable controls and states on every dark surface. */
[data-theme="dark"] :is(textarea, select, input[type="text"], input[type="number"],
  .btn-secondary, .choice-btn, .curve-mode, .learning-nav a, .theme-toggle, .bubble) {
  border-color: #69768d;
}
[data-theme="dark"] .btn-primary:hover {
  background: linear-gradient(180deg, #7656ca, #694bc2);
}
[data-theme="dark"] :is(.btn-secondary:hover, .choice-btn:hover, .curve-mode:hover,
  .learning-nav a:hover, .theme-toggle:hover) {
  border-color: #9c89bd;
}
[data-theme="dark"] .about-timeline article > span {
  background: var(--purple);
  color: var(--green);
}
[data-theme="dark"] .noscript-note {
  background: #30291f;
  color: #edce9d;
}
[data-theme="dark"] #theta-dot:focus-visible {
  stroke: #fff;
  stroke-width: 5;
}
[data-theme="dark"] #curve-hit:focus-visible {
  stroke: #c8b7ff66;
}

/* Layout remains usable with long labels, browser zoom and narrow phones. */
:is(.field-row, .contact-grid > *, .learning-grid > *, .launch-card, .hero-copy) {
  min-width: 0;
}
:is(.card, footer, .page-intro) {
  overflow-wrap: break-word;
}
.theme-toggle,
.learning-nav a,
.curve-mode,
.text-button,
.learn-link {
  min-height: 44px;
}
.learning-nav a,
.learn-link {
  display: inline-flex;
  align-items: center;
}
.metric-help-button {
  width: 32px;
  height: 32px;
}
.chart-controls input[type="range"] {
  min-height: 44px;
}
@media (max-width: 800px) {
  .page-cta .btn-primary {
    white-space: normal;
    text-align: center;
  }
  .contact-actions > * {
    max-width: 100%;
  }
}
@media (max-width: 600px) {
  .topbar {
    gap: 10px;
  }
  .topbar .brand {
    font-size: 22px;
    gap: 8px;
  }
  .topbar .brand-icon {
    width: 34px;
    height: 34px;
  }
  .theme-toggle {
    font-size: 11px;
    padding: 9px 10px;
  }
  .nav-links {
    gap: 3px;
  }
  .nav-links a {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1 0 30%;
    min-height: 44px;
    white-space: normal;
    line-height: 1.35;
    font-size: 12px;
    padding: 8px 5px;
  }
  .bubble-row,
  .bubble-row.answered {
    display: grid;
    grid-template-columns: minmax(20px, .65fr) repeat(6, minmax(0, 1fr));
    gap: 4px;
    min-height: 62px;
    padding-inline: 4px;
  }
  .bubble {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    max-width: 44px;
    min-width: 0;
    justify-self: center;
  }
  .bubble-qnum {
    min-width: 0;
  }
  .session-bar > div,
  .answer-progress {
    flex-wrap: wrap;
  }
  .input-mode-toggle .radio-label {
    min-height: 44px;
  }
  .impact-controls label {
    min-width: min(180px, 100%);
  }
  .countdown {
    gap: 8px;
    margin: 24px auto;
  }
  .countdown-unit {
    border-radius: 10px;
    padding: 16px 4px;
  }
  .countdown-unit :is(strong, .countdown-value) {
    font-size: clamp(24px, 7vw, 36px);
  }
  .countdown-unit :is(span, small) {
    font-size: 11px;
  }
  .launch-card .contact-actions {
    flex-direction: column;
  }
}
@media (max-width: 360px) {
  .field-grid {
    grid-template-columns: 1fr;
  }
  .topbar .brand {
    font-size: 20px;
  }
  .topbar .brand-sub {
    letter-spacing: 1px;
  }
  .score-number {
    font-size: 64px;
  }
  .delta-row {
    grid-template-columns: 25px minmax(16px, 1fr) 112px;
    gap: 5px;
  }
}

/* Keep chart labels readable after the SVG scales down on phones. */
.chart-axis-label {
  display: none;
}
@media (max-width: 600px) {
  .chart-axis-label {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin: 0 0 12px;
  }
  #chart-grid text {
    font-size: 32px;
  }
  #tri-chart-direct > text {
    display: none;
  }
}