:root {
  --bg: #07111f;
  --bg-deep: #040a12;
  --panel: #0d1a29;
  --panel-2: #111f2f;
  --text: #edf5fb;
  --muted: #9fb0c0;
  --ink: #162334;
  --ink-soft: #607185;
  --surface: #f4f7fa;
  --white: #ffffff;
  --line: rgba(255, 255, 255, 0.12);
  --line-dark: rgba(22, 35, 52, 0.14);
  --teal: #4f8cff;
  --mint: #eef4ff;
  --blue: #4fa3ff;
  --amber: #f5b94c;
  --red: #ff7272;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

body.nav-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
[hidden] { display: none !important; }
h1, h2, h3, p { overflow-wrap: anywhere; }

.section-wrap {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  width: min(1180px, calc(100% - 32px));
  min-height: 72px;
  margin: 16px auto 0;
  padding: 10px 12px 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(7, 17, 31, 0.8);
  box-shadow: 0 20px 55px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(18px);
  transition: background 180ms ease;
}

.site-header.is-scrolled { background: rgba(7, 17, 31, 0.96); }
.brand { display: flex; width: 170px; }
.brand img { width: 100%; }

.site-nav {
  display: flex;
  justify-content: center;
  gap: 28px;
  color: #d9e6ef;
  font-size: 0.92rem;
}

.site-nav a { padding: 8px 0; }

.header-cta {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 17px;
  border-radius: 8px;
  background: var(--mint);
  color: #10254a;
  font-weight: 780;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.tool-intro {
  position: relative;
  min-height: 480px;
  overflow: hidden;
  padding: 136px 0 62px;
  isolation: isolate;
}

.tool-intro::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 10, 18, 0.98), rgba(4, 10, 18, 0.82) 58%, rgba(4, 10, 18, 0.38)),
    linear-gradient(0deg, var(--bg), transparent 45%);
  content: "";
}

.tool-intro-media {
  position: absolute;
  z-index: -2;
  inset: 0;
}

.tool-intro-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 58%;
  opacity: 0.7;
  transform: scale(1.04);
}

.tool-intro-grid {
  position: absolute;
  z-index: -1;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(90deg, black, transparent 72%);
}

.intro-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 48px;
}

.back-link {
  grid-column: 1 / -1;
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 10px;
  color: #b9c8d4;
  font-size: 0.82rem;
  font-weight: 700;
}

.eyebrow,
.workspace-index {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}

.intro-copy h1 {
  margin: 0;
  max-width: 780px;
  font-size: clamp(3.1rem, 7vw, 6.3rem);
  line-height: 0.92;
  letter-spacing: 0;
  text-transform: uppercase;
}

.intro-copy > p:last-child {
  max-width: 670px;
  margin: 25px 0 0;
  color: #d2e0e9;
  font-size: 1.06rem;
}

.intro-status {
  min-width: 260px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: rgba(4, 10, 18, 0.55);
  backdrop-filter: blur(12px);
}

.intro-status span {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #c8d6df;
  font-size: 0.74rem;
}

.intro-status i,
.live-chip i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 12px rgba(79, 140, 255, 0.82);
}

.intro-status strong {
  display: block;
  margin-top: 13px;
  color: var(--teal);
  font-size: 0.8rem;
}

.simulator-section {
  padding: 72px 0 110px;
  background: var(--surface);
  color: var(--ink);
}

.simulator-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(390px, 0.92fr);
  gap: 28px;
  align-items: start;
}

.input-workspace,
.result-workspace {
  border: 1px solid var(--line-dark);
  border-radius: 8px;
}

.input-workspace {
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 18px 60px rgba(22, 35, 52, 0.08);
}

.result-workspace {
  position: sticky;
  top: 108px;
  overflow: hidden;
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow);
}

.workspace-head,
.result-head {
  display: flex;
  min-height: 105px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 28px;
  border-bottom: 1px solid var(--line-dark);
}

.result-head { border-color: var(--line); }
.workspace-head h2,
.result-head h2 { margin: 0; font-size: 1.55rem; line-height: 1.1; }

.reset-button {
  min-height: 40px;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  padding: 8px 14px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font-weight: 740;
}

.input-section {
  margin: 0;
  border: 0;
  border-bottom: 1px solid var(--line-dark);
  padding: 27px 28px 30px;
}

.input-section:last-child { border-bottom: 0; }
.input-section legend { padding: 0; font-size: 1rem; font-weight: 820; }
.field-hint { margin: 6px 0 18px; color: var(--ink-soft); font-size: 0.78rem; }

.package-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
}

.package-selector button {
  display: grid;
  min-height: 112px;
  align-content: center;
  justify-items: start;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  padding: 14px;
  background: #f8fafc;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.package-selector button[aria-pressed="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(22, 35, 52, 0.16);
}

.package-selector button > span { color: #8191a0; font-size: 0.65rem; font-weight: 820; }
.package-selector button[aria-pressed="true"] > span { color: var(--teal); }
.package-selector button strong { margin-top: 9px; font-size: 1rem; }
.package-selector button small { margin-top: 3px; color: #758696; }
.package-selector button[aria-pressed="true"] small { color: #aebfcb; }
.custom-investment { margin-top: 15px; }

.field {
  display: grid;
  gap: 7px;
  color: #425568;
  font-size: 0.8rem;
  font-weight: 730;
}

.field input,
.field select,
.vehicle-row > input,
.money-input,
.suffix-input {
  width: 100%;
  min-width: 0;
  min-height: 46px;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
  background: #ffffff;
  color: var(--ink);
}

.field input,
.field select,
.vehicle-row > input { padding: 10px 12px; }
.field input:focus,
.field select:focus,
.vehicle-row > input:focus,
.money-input:focus-within,
.suffix-input:focus-within { border-color: #2864d7; outline: 3px solid rgba(79, 140, 255, 0.14); }

.money-input,
.suffix-input {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  overflow: hidden;
}

.suffix-input { grid-template-columns: minmax(0, 1fr) auto; }
.money-input b,
.suffix-input b { padding: 0 11px; color: #708294; font-size: 0.75rem; }
.money-input input,
.suffix-input input { min-height: 44px; border: 0; border-radius: 0; outline: 0; }
.field small { color: #8493a1; font-size: 0.71rem; font-weight: 500; }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, #708294 50%), linear-gradient(135deg, #708294 50%, transparent 50%); background-position: calc(100% - 16px) 19px, calc(100% - 11px) 19px; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.amortization-grid { grid-template-columns: 1fr 1fr; margin-bottom: 0; }

.vehicle-table {
  overflow: hidden;
  margin-top: 14px;
  border: 1px solid var(--line-dark);
  border-radius: 7px;
}

.vehicle-row {
  display: grid;
  grid-template-columns: minmax(90px, 0.65fr) minmax(130px, 1fr) minmax(150px, 1fr);
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-dark);
}

.vehicle-row:last-child { border-bottom: 0; }
.vehicle-row label { font-size: 0.82rem; font-weight: 780; }
.vehicle-head { min-height: 44px; background: #eef3f7; color: #6f8192; font-size: 0.68rem; font-weight: 820; text-transform: uppercase; }

.field-grid { display: grid; gap: 12px; margin-top: 14px; margin-bottom: 15px; }
.three-columns { grid-template-columns: repeat(3, 1fr); }

.mode-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin-top: 15px;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  padding: 4px;
  background: #edf2f7;
}

.mode-selector button {
  min-height: 48px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #5e7184;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 800;
}

.mode-selector button[aria-selected="true"] { background: var(--ink); color: #ffffff; }

.mode-description {
  margin: 14px 0;
  border-left: 3px solid var(--teal);
  padding: 11px 13px;
  background: #f1f5ff;
  color: #5d6f80;
  font-size: 0.78rem;
}

.mode-fields { max-width: 310px; }
.live-chip { display: inline-flex; align-items: center; gap: 8px; color: #b8c8d3; font-size: 0.74rem; font-weight: 750; }

.primary-metric { padding: 30px 28px; border-bottom: 1px solid var(--line); }
.primary-metric > span { display: block; color: #aebdca; font-size: 0.78rem; font-weight: 740; }
.primary-metric strong { display: block; margin: 9px 0 7px; color: var(--teal); font-size: clamp(2.3rem, 4.6vw, 4rem); line-height: 0.95; }
.primary-metric small { color: #7890a3; font-size: 0.72rem; }

.metric-grid { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; border-bottom: 1px solid var(--line); }
.metric-grid div { padding: 18px 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metric-grid div:nth-child(even) { border-right: 0; }
.metric-grid div:nth-last-child(-n + 2) { border-bottom: 0; }
.metric-grid dt { color: #718699; font-size: 0.67rem; font-weight: 780; text-transform: uppercase; }
.metric-grid dd { margin: 6px 0 0; color: #ffffff; font-size: 0.96rem; font-weight: 800; }

.flow-panel { padding: 23px 28px 8px; }
.flow-head,
.distribution-legend { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: #7890a3; font-size: 0.68rem; font-weight: 800; text-transform: uppercase; }
.flow-head span:last-child { color: var(--teal); }
.flow-panel dl { margin: 13px 0 0; }
.flow-panel dl div { display: flex; justify-content: space-between; gap: 24px; padding: 9px 0; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.flow-panel dt { color: #a9bac7; font-size: 0.76rem; }
.flow-panel dd { margin: 0; color: #ffffff; font-size: 0.78rem; font-weight: 760; text-align: right; }
.flow-panel dd.negative { color: #f4a7a7; }

.distribution-panel { margin: 16px 28px 0; border-top: 1px solid var(--line); padding-top: 18px; }
.distribution-bar { display: flex; height: 11px; margin: 13px 0; overflow: hidden; border-radius: 3px; background: #203044; }
.distribution-bar i { display: block; width: 0; transition: width 280ms ease; }
.bar-primary { background: var(--teal); }
.bar-partner { background: var(--blue); }
.bar-cost { background: var(--amber); }
.distribution-labels { display: flex; flex-wrap: wrap; gap: 15px; color: #8195a7; font-size: 0.65rem; }
.distribution-labels span { display: inline-flex; align-items: center; gap: 6px; }
.distribution-labels i { width: 7px; height: 7px; border-radius: 50%; }
.dot-primary { background: var(--teal); }
.dot-partner { background: var(--blue); }
.dot-cost { background: var(--amber); }

.result-status { margin: 22px 28px 0; border: 1px solid rgba(79, 140, 255, 0.22); border-radius: 7px; padding: 13px; background: rgba(79, 140, 255, 0.08); color: #b8c8e8; font-size: 0.76rem; }
.result-status.is-positive { color: #c9d9ff; }
.result-status.is-warning { border-color: rgba(245, 185, 76, 0.24); background: rgba(245, 185, 76, 0.07); color: #e1c590; }
.result-status.is-negative { border-color: rgba(255, 114, 114, 0.24); background: rgba(255, 114, 114, 0.07); color: #e5aaaa; }

.whatsapp-button {
  display: flex;
  min-height: 49px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 22px 28px 0;
  border-radius: 8px;
  background: var(--mint);
  color: #10254a;
  font-weight: 820;
}

.result-disclaimer { margin: 14px 28px 27px; color: #70869a; font-size: 0.67rem; }

.formula-section { padding: 105px 0; background: var(--bg); }
.formula-heading { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 70px; align-items: end; margin-bottom: 50px; }
.formula-heading h2 { margin: 0; max-width: 720px; font-size: clamp(2.4rem, 5vw, 4.7rem); line-height: 0.98; }
.formula-heading > p { margin: 0; color: var(--muted); }
.formula-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.formula-grid article { min-height: 310px; padding: 28px; border-right: 1px solid var(--line); }
.formula-grid article:last-child { border-right: 0; }
.formula-grid span { color: var(--teal); font-size: 0.68rem; font-weight: 850; }
.formula-grid h3 { margin: 88px 0 0; font-size: 1.28rem; }
.formula-grid p { margin: 14px 0 0; color: var(--muted); font-size: 0.88rem; }

.site-footer { border-top: 1px solid var(--line); padding: 34px 0; background: var(--bg-deep); }
.footer-inner { display: grid; grid-template-columns: 170px 1fr auto; align-items: center; gap: 30px; }
.footer-inner a { width: 170px; }
.footer-inner p { margin: 0; color: #8ea1b2; font-size: 0.8rem; }
.footer-inner > span { color: #73889a; font-size: 0.75rem; }

@media (max-width: 1000px) {
  .site-nav { position: fixed; top: 96px; left: 16px; right: 16px; display: none; flex-direction: column; gap: 2px; border: 1px solid var(--line); border-radius: 8px; padding: 16px; background: rgba(7, 17, 31, 0.98); box-shadow: var(--shadow); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 12px; }
  .nav-toggle { display: block; }
  .simulator-grid { grid-template-columns: 1fr; }
  .result-workspace { position: static; }
  .formula-heading { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 700px) {
  html { scroll-padding-top: 88px; }
  .section-wrap { width: min(100% - 28px, 1180px); }
  .site-header { width: calc(100% - 20px); min-height: 64px; margin-top: 10px; padding: 8px 9px 8px 12px; }
  .brand { width: 135px; }
  .header-cta { display: none; }
  .tool-intro { min-height: 555px; padding: 112px 0 48px; }
  .tool-intro::before { background: linear-gradient(180deg, rgba(4, 10, 18, 0.55), rgba(4, 10, 18, 0.94) 66%, var(--bg)); }
  .tool-intro-media img { object-position: 58% center; }
  .intro-inner { grid-template-columns: 1fr; gap: 28px; }
  .intro-copy h1 { font-size: clamp(3rem, 16vw, 4.5rem); }
  .intro-status { min-width: 0; }
  .simulator-section { padding: 30px 0 76px; }
  .workspace-head, .result-head, .input-section { padding-left: 18px; padding-right: 18px; }
  .package-selector { grid-template-columns: 1fr; }
  .package-selector button { grid-template-columns: auto 1fr auto; min-height: 72px; align-items: center; justify-items: start; gap: 12px; }
  .package-selector button strong, .package-selector button small { margin: 0; }
  .vehicle-head { display: none; }
  .vehicle-row { grid-template-columns: 1fr 1fr; gap: 9px; padding: 14px; }
  .vehicle-row label { grid-column: 1 / -1; }
  .three-columns { grid-template-columns: 1fr; }
  .amortization-grid { grid-template-columns: 1fr 1fr; }
  .mode-selector { grid-template-columns: 1fr; }
  .mode-selector button { min-height: 43px; }
  .mode-fields { max-width: none; }
  .primary-metric, .flow-panel { padding-left: 20px; padding-right: 20px; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric-grid div, .metric-grid div:nth-child(even), .metric-grid div:nth-last-child(-n + 2) { border-right: 0; border-bottom: 1px solid var(--line); }
  .metric-grid div:last-child { border-bottom: 0; }
  .distribution-panel, .result-status, .whatsapp-button { margin-left: 20px; margin-right: 20px; }
  .result-disclaimer { margin-left: 20px; margin-right: 20px; }
  .formula-section { padding: 76px 0; }
  .formula-heading h2 { font-size: clamp(2.2rem, 11vw, 3.2rem); }
  .formula-grid { grid-template-columns: 1fr; }
  .formula-grid article { min-height: 250px; border-right: 0; border-bottom: 1px solid var(--line); }
  .formula-grid article:last-child { border-bottom: 0; }
  .formula-grid h3 { margin-top: 55px; }
  .footer-inner { grid-template-columns: 1fr; gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}