:root {
  --ink-strong: #132238;
  --ink: #21354e;
  --ink-soft: #5d6d83;
  --paper: #f5f1ea;
  --paper-strong: #fffdfa;
  --panel: rgba(255, 253, 250, 0.84);
  --panel-deep: rgba(248, 243, 235, 0.92);
  --line: rgba(19, 34, 56, 0.1);
  --accent: #0f766e;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --gold: #b6853b;
  --shadow: 0 24px 70px rgba(27, 43, 68, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-pill: 999px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  overflow-x: hidden;
  background:
    radial-gradient(circle at top left, rgba(182, 133, 59, 0.12), transparent 28%),
    radial-gradient(circle at 86% 12%, rgba(15, 118, 110, 0.1), transparent 24%),
    linear-gradient(180deg, #faf6f0 0%, var(--paper) 50%, #eee7de 100%);
}

button,
input,
select {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  width: min(1180px, calc(100% - 1.5rem));
  margin: 0 auto;
  padding: 1rem 0 3rem;
}

.site-header,
.hero-panel,
.calculator-card,
.results-card,
.methodology-section {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-radius: 24px;
  position: sticky;
  top: 0.8rem;
  z-index: 5;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  flex: 0 0 auto;
}

.brand-mark-symbol img {
  display: block;
  width: 100%;
  height: 100%;
}

.site-nav {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  color: var(--ink-soft);
}

.site-nav a {
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-pill);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.62);
  outline: none;
}

main {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
  align-items: start;
  margin-bottom: -0.1rem;
}

.hero-copy,
.hero-side,
.hero-panel,
.calculator-section,
.methodology-section {
  border-radius: var(--radius-xl);
}

.hero-copy {
  padding: 0 0.35rem 0 0;
  display: grid;
  align-content: start;
  gap: 0.75rem;
}

.hero-side {
  align-content: start;
}

.eyebrow {
  margin: 0 0 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.73rem;
  color: var(--accent);
  font-weight: 800;
}

.hero h1,
.section-heading h2,
.results-header h3,
.method-card h3 {
  letter-spacing: -0.05em;
}

.hero h1 {
  margin: 0;
  max-width: 14ch;
  font-family: "Newsreader", serif;
  font-weight: 600;
  font-size: clamp(2.4rem, 5.4vw, 4.7rem);
  line-height: 0.92;
  color: var(--ink-strong);
}

.hero-body,
.section-note,
.rate-detail,
.method-card p {
  color: var(--ink-soft);
  line-height: 1.7;
}

.hero-body {
  max-width: 60ch;
  font-size: 1.03rem;
  margin: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.3rem;
  padding: 0 1.2rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--ink-strong);
  color: white;
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.68);
}

.button-block {
  width: 100%;
}

.section-heading-compact {
  margin-bottom: 0.85rem;
}

.section-heading-compact h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.hero-panel {
  padding: 1.15rem;
  display: grid;
  align-content: start;
  gap: 1rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(248, 243, 235, 0.9)),
    var(--panel);
}

.hero-panel-topline,
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.hero-panel-topline {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.status-dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0.45rem rgba(15, 118, 110, 0.12);
}

.snapshot-grid,
.results-grid,
.methodology-grid {
  display: grid;
  gap: 0.85rem;
}

.snapshot-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.snapshot-card,
.result-panel,
.difference-card,
.method-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(19, 34, 56, 0.08);
  background: var(--paper-strong);
}

.snapshot-card {
  padding: 1rem;
}

.snapshot-card p,
.result-panel p,
.difference-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.snapshot-card strong,
.result-panel strong,
.difference-card strong {
  display: block;
  margin-top: 0.5rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
  letter-spacing: -0.05em;
  color: var(--ink-strong);
}

.snapshot-source {
  display: block;
  margin-top: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.45;
}

.snapshot-updated {
  display: grid;
  gap: 0.45rem;
  padding: 0.1rem 0.15rem 0;
}

.snapshot-note {
  margin: 0.45rem 0 0;
  padding: 0 0.15rem;
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.45;
}

.share-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.85rem;
  justify-content: center;
}

.share-label {
  margin: 1rem 0 0;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: center;
}

.share-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.5rem;
  padding: 0 0.95rem;
  border: 1px solid rgba(19, 34, 56, 0.1);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink-strong);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease;
}

.share-button:hover {
  transform: translateY(-1px);
  border-color: rgba(15, 118, 110, 0.2);
  background: rgba(241, 248, 247, 0.96);
}

.share-button:disabled {
  opacity: 0.6;
  cursor: wait;
  transform: none;
}

.share-button-accent {
  background: rgba(15, 118, 110, 0.12);
  color: var(--accent);
  border-color: rgba(15, 118, 110, 0.18);
}

.share-button-whatsapp {
  background: rgba(34, 197, 94, 0.12);
  color: #15803d;
  border-color: rgba(34, 197, 94, 0.22);
}

.share-button-icon {
  display: inline-flex;
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
}

.share-button-icon svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.share-feedback {
  min-height: 1.25rem;
  margin: 0.45rem 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.snapshot-update-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  color: var(--ink-soft);
}

.snapshot-update-item span {
  font-size: 0.92rem;
}

.snapshot-update-item strong {
  font-size: 0.98rem;
  color: var(--ink-strong);
  text-align: right;
}

.snapshot-update-action {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.45rem;
}

.refresh-button {
  border: 1px solid rgba(19, 34, 56, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  color: var(--ink-strong);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 700;
  padding: 0.38rem 0.82rem;
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease;
}

.refresh-button:hover {
  transform: translateY(-1px);
  border-color: rgba(15, 118, 110, 0.24);
  background: rgba(240, 248, 246, 0.95);
}

.refresh-button:disabled {
  opacity: 0.6;
  cursor: wait;
  transform: none;
}

.methodology-section {
  padding: 1.15rem;
}

.section-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-heading h2,
.results-header h3 {
  margin: 0;
  font-family: "Newsreader", serif;
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--ink-strong);
}

.section-note {
  max-width: none;
  margin: 0;
  text-align: right;
  white-space: nowrap;
}

.calculator-section .section-heading > div:first-child {
  max-width: none;
}

.calculator-section .section-heading h2 {
  white-space: nowrap;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

.calculator-section {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  padding: 1.15rem;
}

.calculator-card,
.results-card {
  padding: 0;
  border-radius: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.calculator-workbench {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 1rem;
  align-items: start;
}

.field {
  display: grid;
  gap: 0.55rem;
}

.field span {
  font-size: 0.92rem;
  font-weight: 700;
}

.field input,
.field select {
  min-height: 3.4rem;
  width: 100%;
  padding: 0 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(19, 34, 56, 0.12);
  background: rgba(255, 255, 255, 0.8);
  color: var(--ink-strong);
}

.field input:focus-visible,
.field select:focus-visible,
.chip:focus-visible,
.button:focus-visible {
  outline: 2px solid rgba(15, 118, 110, 0.3);
  outline-offset: 2px;
}

.calculator-card {
  display: grid;
  gap: 0.95rem;
  grid-template-rows: 1fr auto;
}

.calculator-inputs,
.calculator-actions {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(19, 34, 56, 0.08);
  background: var(--paper-strong);
  padding: 1rem;
}

.calculator-inputs {
  display: grid;
  gap: 0.95rem;
}

.calculator-actions {
  display: grid;
  gap: 0;
}

.quick-amounts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.chip {
  min-height: 2.6rem;
  padding: 0 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(19, 34, 56, 0.12);
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink-soft);
  cursor: pointer;
}

.chip-active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(15, 118, 110, 0.18);
}

.results-card {
  display: grid;
  gap: 1rem;
}

.result-panel,
.difference-card {
  padding: 1rem;
}

.results-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.result-panel span,
.difference-card span {
  display: block;
  margin-top: 0.4rem;
  color: var(--ink-soft);
}

.result-panel-reference {
  background: linear-gradient(180deg, #fafdfe, #eef7f5);
}

.result-panel-custom {
  background: linear-gradient(180deg, #fffdfa, #f5f1ea);
  grid-column: 1 / -1;
}

.difference-card {
  background: linear-gradient(135deg, rgba(19, 34, 56, 0.97), rgba(34, 66, 95, 0.96));
}

.difference-card p,
.difference-card strong,
.difference-card span {
  color: white;
}

.methodology-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.method-card {
  padding: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(248, 243, 235, 0.9));
}

.method-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink-strong);
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  animation: rise 700ms ease forwards;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .hero,
  .methodology-grid,
  .calculator-workbench {
    grid-template-columns: 1fr;
  }

  .section-heading {
    align-items: start;
  }

  .section-note {
    text-align: left;
    white-space: normal;
  }
}

@media (max-width: 720px) {
  html {
    scroll-padding-top: 1rem;
  }

  .page-shell {
    width: min(100% - 1rem, 100%);
    padding-top: 0.6rem;
  }

  .site-header {
    position: static;
    flex-direction: column;
    align-items: start;
    gap: 0.85rem;
    padding: 0.9rem 1rem;
    border-radius: 22px;
  }

  .site-nav {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.25rem;
    font-size: 0.88rem;
  }

  .site-nav a {
    min-width: 0;
    padding: 0.35rem 0.25rem;
    text-align: center;
  }

  .hero {
    gap: 0.8rem;
  }

  .hero-copy {
    padding-right: 0;
    gap: 0.65rem;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(1.72rem, 8.2vw, 2.45rem);
    line-height: 0.94;
    letter-spacing: -0.05em;
    overflow-wrap: normal;
  }

  .hero-body {
    font-size: 0.92rem;
    line-height: 1.5;
  }

  .hero-panel,
  .calculator-section,
  .methodology-section {
    padding: 1rem;
    border-radius: 24px;
  }

  .hero-panel-topline,
  .snapshot-update-item,
  .section-heading {
    gap: 0.7rem;
  }

  .section-heading h2 {
    font-size: clamp(1.55rem, 7vw, 2rem);
  }

  .calculator-section .section-heading h2 {
    white-space: normal;
    font-size: clamp(1.55rem, 7vw, 2rem);
  }

  .section-note {
    font-size: 0.95rem;
  }

  .calculator-workbench {
    gap: 0.8rem;
  }

  .calculator-inputs,
  .calculator-actions,
  .result-panel,
  .difference-card,
  .snapshot-card,
  .method-card {
    padding: 0.9rem;
    border-radius: 20px;
  }

  .field input,
  .field select,
  .button-block {
    min-height: 3.15rem;
  }

  .quick-amounts {
    gap: 0.5rem;
  }

  .share-actions {
    gap: 0.5rem;
  }

  .chip {
    min-height: 2.45rem;
    padding: 0 0.8rem;
  }

  .snapshot-card strong,
  .result-panel strong,
  .difference-card strong {
    font-size: clamp(1.2rem, 9vw, 1.9rem);
  }

  .snapshot-source,
  .result-panel span,
  .difference-card span {
    font-size: 0.82rem;
    line-height: 1.4;
  }

  .snapshot-grid,
  .results-grid {
    grid-template-columns: 1fr;
  }

  .result-panel-custom {
    grid-column: auto;
  }
}