:root {
  color-scheme: dark;
  --bg: #0b1117;
  --surface: #121c25;
  --surface-raised: #182630;
  --surface-soft: #20313c;
  --text: #f7fafc;
  --muted: #aab9c5;
  --line: #30434f;
  --gold: #ffd34d;
  --gold-deep: #e8ad16;
  --mint: #62e6a7;
  --blue: #6ecbff;
  --danger: #ff8b8b;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 12% 0%, rgba(255, 211, 77, 0.12), transparent 31rem),
    radial-gradient(circle at 90% 30%, rgba(110, 203, 255, 0.08), transparent 32rem),
    var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.55;
}

button, input { font: inherit; }

button, a { -webkit-tap-highlight-color: transparent; }

button { color: inherit; }

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  transform: translateY(-200%);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  background: var(--gold);
  color: #101820;
  font-weight: 800;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.15rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  border-radius: 0.8rem 0.8rem 0.8rem 0.28rem;
  background: var(--gold);
  box-shadow: inset 0 -4px 0 rgba(111, 77, 0, 0.25);
  color: #111820;
  font-size: 1.35rem;
  font-weight: 950;
}

.brand strong, .brand small { display: block; }
.brand strong { font-size: 1.1rem; letter-spacing: -0.02em; }
.brand small { color: var(--muted); font-size: 0.78rem; }

.status-badge {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

main,
footer {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
}

.intro {
  max-width: 760px;
  padding: clamp(2rem, 7vw, 4.75rem) 0 clamp(1.5rem, 4vw, 2.5rem);
}

.eyebrow {
  margin: 0 0 0.45rem;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }

h1 {
  margin-bottom: 0.75rem;
  max-width: 720px;
  font-size: clamp(2.25rem, 7vw, 4.65rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.intro > p:last-child {
  max-width: 650px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(310px, 0.8fr);
  gap: 1.25rem;
  align-items: start;
}

.calculator-panel,
.results-panel,
.goal-card,
.understand {
  border: 1px solid var(--line);
  background: rgba(18, 28, 37, 0.94);
  box-shadow: var(--shadow);
}

.calculator-panel {
  padding: clamp(1.2rem, 3.5vw, 2rem);
  border-radius: 1.3rem;
}

.section-heading,
.section-heading > div {
  display: flex;
  align-items: center;
}

.section-heading { justify-content: space-between; gap: 1rem; }
.section-heading > div { gap: 0.7rem; }
.section-heading h2 { margin: 0; font-size: 1.25rem; letter-spacing: -0.025em; }

.step {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--gold);
  color: #111820;
  font-weight: 950;
}

.text-button {
  min-height: 2.75rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 1.3rem 0;
  padding: 0.3rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: #0c151c;
}

.mode-button {
  min-height: 3rem;
  padding: 0.6rem 0.75rem;
  border: 0;
  border-radius: 0.62rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 750;
}

.mode-button.active {
  background: var(--surface-soft);
  color: var(--text);
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
}

.field-label,
.mine-card label,
.goal-control label,
.fee-row label {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.prominent-field {
  display: grid;
  grid-template-columns: 3.25rem 1fr 3.25rem;
  gap: 0.6rem;
  margin: 0.4rem 0 1.1rem;
}

.prominent-field input,
.compact-input,
.mine-card input,
.suffix-input input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: #0d171e;
  color: var(--text);
  font-weight: 800;
}

.prominent-field input {
  min-width: 0;
  height: 3.4rem;
  text-align: center;
  font-size: 1.45rem;
}

.stepper {
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--surface-soft);
  color: var(--text);
  cursor: pointer;
  font-size: 1.5rem;
  font-weight: 800;
}

.stepper:active { transform: translateY(1px); }

.compact-label { margin-top: 0.3rem; }
.compact-input { max-width: 8rem; height: 3rem; margin-top: 0.35rem; padding: 0 0.8rem; }

.field-help,
.panel-instruction {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.mine-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.mine-card {
  padding: 1rem;
  border: 1px solid var(--line);
  border-top: 3px solid var(--mine-color);
  border-radius: 0.9rem;
  background: #0e181f;
}

.mine-card.rock { --mine-color: #9fb0bb; }
.mine-card.coal { --mine-color: #6b8090; }
.mine-card.gold { --mine-color: var(--gold); }
.mine-card.diamond { --mine-color: var(--blue); }

.mine-title { display: flex; align-items: center; gap: 0.45rem; margin-bottom: 0.75rem; }
.mine-title span { color: var(--mine-color); }
.mine-card label { margin: 0.55rem 0 0.25rem; }
.mine-card input { height: 2.75rem; padding: 0 0.7rem; }

.divider { height: 1px; margin: 1.7rem 0; background: var(--line); }
.boost-heading { margin-bottom: 1rem; }
.boost-output { color: var(--gold); font-weight: 850; }

.preset-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.2rem;
}

.preset-buttons button {
  min-height: 2.85rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: #0d171e;
  cursor: pointer;
  font-weight: 800;
}

.preset-buttons button.active {
  border-color: var(--gold);
  background: var(--gold);
  color: #101820;
}

.range { width: 100%; accent-color: var(--gold); cursor: pointer; }
.range-labels { display: flex; justify-content: space-between; color: var(--muted); font-size: 0.78rem; }

.fee-details,
.formula-details {
  margin-top: 1.2rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

summary { cursor: pointer; color: var(--muted); font-weight: 750; }
.fee-row { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-top: 1rem; }

.suffix-input {
  position: relative;
  max-width: 8rem;
}

.suffix-input input { height: 3rem; padding: 0 2.2rem 0 0.8rem; }
.suffix-input span { position: absolute; top: 50%; right: 0.85rem; transform: translateY(-50%); color: var(--muted); font-weight: 800; }

.results-panel {
  position: sticky;
  top: 1rem;
  padding: clamp(1.3rem, 3vw, 1.8rem);
  overflow: hidden;
  border-color: rgba(255, 211, 77, 0.46);
  border-radius: 1.3rem;
  background:
    linear-gradient(150deg, rgba(255, 211, 77, 0.12), transparent 48%),
    rgba(18, 28, 37, 0.98);
}

.results-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 0.28rem;
  background: linear-gradient(90deg, var(--gold), var(--mint));
}

.result-kicker { margin-bottom: 0.35rem; color: var(--muted); font-size: 0.86rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; }
.primary-result strong { display: block; color: var(--mint); font-size: clamp(2.8rem, 7vw, 4.3rem); line-height: 1; letter-spacing: -0.06em; overflow-wrap: anywhere; }
.primary-result span { color: var(--muted); font-weight: 700; }
.result-summary { margin: 1rem 0 1.2rem; padding-bottom: 1.1rem; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }

.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.65rem; }
.result-grid > div { min-width: 0; padding: 0.8rem; border-radius: 0.75rem; background: rgba(11, 17, 23, 0.55); }
.result-grid span, .net-result span, .tb-conversion > span { display: block; color: var(--muted); font-size: 0.76rem; font-weight: 700; }
.result-grid strong { display: block; margin-top: 0.1rem; font-size: 1rem; overflow-wrap: anywhere; }

.net-result {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 0.75rem;
  padding: 0.85rem;
  border: 1px solid rgba(98, 230, 167, 0.35);
  border-radius: 0.75rem;
  background: rgba(98, 230, 167, 0.08);
}

.net-result[hidden] { display: none; }
.net-result strong { color: var(--mint); text-align: right; }

.tb-conversion { margin-top: 1rem; padding: 1rem; border: 1px dashed var(--line); border-radius: 0.8rem; }
.tb-conversion > span { margin-bottom: 0.6rem; }
.tb-conversion > div { display: flex; align-items: baseline; justify-content: space-between; gap: 0.8rem; padding: 0.2rem 0; }
.tb-conversion small { color: var(--muted); text-align: right; }
.estimate-note { margin: 1rem 0 0; color: var(--muted); font-size: 0.76rem; }

.ad-slot {
  min-height: 7.5rem;
  margin: 1.3rem 0;
  padding: 1rem;
  display: grid;
  place-items: center;
  align-content: center;
  border: 1px dashed #526674;
  border-radius: 1rem;
  background: rgba(18, 28, 37, 0.52);
  color: var(--muted);
  text-align: center;
}

.ad-slot span { font-size: 0.68rem; letter-spacing: 0.12em; }
.ad-slot p { margin: 0.25rem 0 0; font-size: 0.85rem; }
.ad-slot-small { min-height: 5.5rem; }

.goal-card {
  display: grid;
  grid-template-columns: 1.2fr minmax(160px, .55fr) minmax(220px, .8fr);
  gap: 1.5rem;
  align-items: center;
  margin: 1.3rem 0;
  padding: clamp(1.3rem, 3vw, 2rem);
  border-radius: 1.3rem;
}

.goal-copy h2 { margin-bottom: 0.35rem; font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -0.035em; }
.goal-copy > p:last-child { margin-bottom: 0; color: var(--muted); }
.goal-input { max-width: 100%; margin-top: 0.4rem; }
.goal-answer { padding-left: 1.5rem; border-left: 1px solid var(--line); }
.goal-answer span, .goal-answer small { display: block; color: var(--muted); }
.goal-answer strong { display: block; color: var(--gold); font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.15; overflow-wrap: anywhere; }

.understand {
  margin: 1.3rem 0;
  padding: clamp(1.3rem, 3vw, 2rem);
  border-radius: 1.3rem;
}

.understand h2 { margin-bottom: 1.2rem; font-size: clamp(1.6rem, 3vw, 2.2rem); }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem; }
.info-grid article { padding: 1rem; border-radius: 0.8rem; background: #0e181f; }
.info-grid strong { color: var(--text); }
.info-grid p { margin: 0.3rem 0 0; color: var(--muted); font-size: 0.88rem; }

.rates-table-wrap { margin-top: 1rem; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.75rem; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--muted); font-size: 0.8rem; }
td:last-child, th:last-child { text-align: right; }

footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  padding: 2.3rem 0 3.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

footer p { margin: 0.25rem 0 0; }
footer nav { display: flex; flex-wrap: wrap; gap: 1rem; align-items: start; }
.disclaimer { grid-column: 1 / -1; max-width: 780px; }

.privacy-main { max-width: 820px; padding: 3rem 0 5rem; }
.privacy-main h1 { font-size: clamp(2.2rem, 6vw, 4rem); }
.privacy-main h2 { margin-top: 2rem; }
.privacy-main p, .privacy-main li { color: var(--muted); }
.back-link { display: inline-block; margin-bottom: 2rem; }

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@media (max-width: 840px) {
  .workspace { grid-template-columns: 1fr; }
  .results-panel { position: static; }
  .goal-card { grid-template-columns: 1fr 1fr; }
  .goal-copy { grid-column: 1 / -1; }
  .goal-answer { min-height: 100%; }
  .info-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .site-header { align-items: flex-start; }
  .status-badge { max-width: 9rem; white-space: normal; text-align: center; }
  .intro { padding-top: 2.2rem; }
  .mode-switch, .preset-buttons { grid-template-columns: 1fr 1fr; }
  .mine-grid { grid-template-columns: 1fr; }
  .goal-card { grid-template-columns: 1fr; }
  .goal-answer { padding: 1rem 0 0; border-top: 1px solid var(--line); border-left: 0; }
  footer { grid-template-columns: 1fr; }
  footer nav { flex-direction: column; }
  .disclaimer { grid-column: auto; }
}

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