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

:root {
  --bg: #f5f3ef;
  --bg2: #edeae4;
  --surface: #ffffff;
  --border: #ddd9d0;
  --ink: #1a1714;
  --ink2: #4a4540;
  --ink3: #6f6961;
  --accent: #c8522a;
  --accent-bg: #fdf0e8;
  --green: #2d6a4f;
  --green-bg: #eaf4ef;
  --blue: #1a4a7a;
  --blue-bg: #e8f0f8;
  --purple: #5a3a7a;
  --purple-bg: #f0eaf8;
  --radius: 14px;
  --shadow: 0 2px 14px rgba(26, 23, 20, 0.08);
  --shadow-lg: 0 14px 38px rgba(26, 23, 20, 0.14);
  --max: 1120px;
}

html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Sora, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.main-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(245, 243, 239, 0.94);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}
.nav-inner {
  max-width: var(--max);
  height: 66px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-logo,
.footer-logo {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 1.45rem;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.nav-logo span,
.footer-logo span { color: var(--accent); }
.nav-logo-badge {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: Sora, sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}
.nav-links a,
.footer-links a {
  color: var(--ink2);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
}
.nav-links a:hover,
.nav-links a.active,
.footer-links a:hover { color: var(--accent); }
.nav-cta {
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  border-radius: 9px;
  padding: 10px 18px;
  font-size: 0.84rem;
  font-weight: 700;
}

main { min-height: calc(100vh - 180px); }
.tool-hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px 24px 28px;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 22px;
  color: var(--ink3);
  font-size: 0.78rem;
}
.breadcrumb a { color: var(--ink3); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.hero-label,
.calc-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid #f0c8a8;
  background: var(--accent-bg);
  color: var(--accent);
  padding: 5px 12px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.tool-hero h1 {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  line-height: 1.05;
  margin: 16px 0 14px;
}
.hero-desc {
  max-width: 760px;
  margin: 0;
  color: var(--ink2);
  font-size: 1rem;
}
.tool-main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 70px;
}
.calculator-shell { --tone: var(--accent); --tone-bg: var(--accent-bg); }
.tone-invest { --tone: var(--green); --tone-bg: var(--green-bg); }
.tone-tax { --tone: var(--blue); --tone-bg: var(--blue-bg); }
.tone-personal { --tone: var(--purple); --tone-bg: var(--purple-bg); }
.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 24px;
  align-items: start;
}
.calc-panel,
.result-panel,
.related-tools {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.calc-panel,
.result-panel { padding: 28px; }
.calc-panel h2,
.related-tools h2 {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 1.75rem;
  line-height: 1.15;
  margin: 14px 0 8px;
}
.calc-panel p {
  margin: 0 0 22px;
  color: var(--ink2);
}
.calculator-context {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
  gap: 14px;
  align-items: end;
  margin: 0 0 18px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
}
.calculator-context p,
.calc-panel .method-note {
  margin: 0;
  color: var(--ink3);
  font-size: 0.8rem;
  line-height: 1.55;
}
.calc-panel .method-note {
  margin: -8px 0 18px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--tone-bg);
  color: var(--ink2);
}
.currency-field label { margin-bottom: 6px; }
.calc-badge { border-color: color-mix(in srgb, var(--tone) 35%, #fff); background: var(--tone-bg); color: var(--tone); }
.fields-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.field label {
  display: block;
  margin-bottom: 7px;
  color: var(--ink2);
  font-size: 0.82rem;
  font-weight: 800;
}
.field-row {
  display: flex;
  align-items: center;
  min-height: 48px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.field-prefix,
.field-suffix {
  color: var(--ink3);
  font-size: 0.82rem;
  font-weight: 800;
  padding: 0 12px;
  white-space: nowrap;
}
input,
select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
  font-weight: 650;
  padding: 0 13px;
}
.field-row input {
  min-width: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}
.calc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}
.calc-btn {
  border: 0;
  border-radius: 10px;
  min-height: 46px;
  padding: 0 18px;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 800;
  cursor: pointer;
}
.calc-btn.primary { background: var(--tone); color: #fff; }
.calc-btn.secondary { background: var(--bg2); color: var(--ink); }
.result-panel {
  position: sticky;
  top: 86px;
}
.result-panel h3 {
  margin: 0 0 16px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink3);
}
.result-primary {
  border-radius: 14px;
  background: var(--ink);
  color: #fff;
  padding: 22px;
  margin-bottom: 16px;
}
.result-primary .label,
.result-item .label {
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.78rem;
  font-weight: 700;
}
.result-primary .value {
  font-size: clamp(1.75rem, 4vw, 2.45rem);
  line-height: 1.1;
  font-weight: 800;
  margin-top: 5px;
}
.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.result-item {
  min-height: 78px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  padding: 13px;
}
.result-item .label { color: var(--ink3); }
.result-item .value {
  margin-top: 4px;
  color: var(--ink);
  font-weight: 800;
  overflow-wrap: anywhere;
}
.result-item .positive { color: var(--green); }
.result-item .negative { color: #9f2d20; }
.mini-result-chart {
  margin: 18px 0 14px;
  min-height: 38px;
}
.mini-result-chart span {
  display: inline-block;
  height: 12px;
  background: var(--tone);
}
.mini-result-chart span + span { background: var(--ink); }
.mini-result-chart small {
  display: block;
  margin-top: 8px;
  color: var(--ink3);
  font-size: 0.76rem;
}
.info-box {
  border-radius: 12px;
  background: var(--tone-bg);
  color: var(--ink2);
  padding: 14px 16px;
  font-size: 0.88rem;
}
.related-tools {
  margin-top: 24px;
  padding: 26px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.tool-card {
  display: block;
  min-height: 190px;
  padding: 20px;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--card-accent, var(--accent));
}
.tool-card h3 {
  font-family: "DM Serif Display", Georgia, serif;
  margin: 14px 0 8px;
  font-size: 1.25rem;
}
.tool-card p {
  margin: 0;
  color: var(--ink2);
  font-size: 0.88rem;
}
.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 40;
  background: var(--ink);
  color: #fff;
  border-radius: 10px;
  padding: 12px 16px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }
footer {
  background: var(--ink);
  color: #fff;
  padding: 34px 0;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}
.footer-logo { color: #fff; }
footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.82rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.footer-links a { color: rgba(255, 255, 255, 0.72); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-inner { gap: 16px; }
  .nav-cta { margin-left: auto; }
  .calc-layout,
  .related-grid { grid-template-columns: 1fr; }
  .result-panel { position: static; }
}
@media (max-width: 560px) {
  .nav-inner,
  .tool-hero,
  .tool-main,
  .footer-inner { padding-left: 18px; padding-right: 18px; }
  .nav-cta { display: none; }
  .fields-grid,
  .result-grid,
  .calculator-context { grid-template-columns: 1fr; }
  .calc-panel,
  .result-panel,
  .related-tools { padding: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}