:root {
  --paper: #f3efe4;
  --card: #fffdf7;
  --ink: #1b2430;
  --muted: #5d6672;
  --line: #ddd4c4;
  --gold: #b98a2d;
  --income: #1f6b4a;
  --income-soft: #e7f3ec;
  --loss: #9f1d1d;
  --loss-soft: #f8e8e6;
  --even: #3d4a3f;
  --shadow: 0 18px 40px rgba(47, 38, 22, 0.08);
  --radius: 18px;
  --sans: "Source Sans 3", "Segoe UI", sans-serif;
  --serif: "Fraunces", "Times New Roman", serif;
}

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

html {
  background: var(--paper);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.45;
  background:
    radial-gradient(circle at top left, rgba(185, 138, 45, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(31, 107, 74, 0.1), transparent 24%),
    var(--paper);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  padding: 8px 12px;
  background: var(--ink);
  color: white;
  z-index: 10;
}

.skip-link:focus {
  top: 12px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.fatal-error {
  margin: 0;
  padding: 16px 20px;
  background: #9f1d1d;
  color: white;
  font-weight: 650;
}

.fatal-error p {
  margin: 0 auto;
  max-width: 880px;
}

.page {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 72px;
}

.hero {
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  font-weight: 640;
  letter-spacing: -0.03em;
}

.lede {
  margin: 0;
  max-width: 36rem;
  color: var(--muted);
}

.calculator {
  display: grid;
  gap: 20px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.field label,
.ledger h2 {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.optional {
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

input[type="month"],
input[type="text"],
input[type="number"] {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: white;
  color: var(--ink);
  font: inherit;
}

input:focus {
  outline: 2px solid var(--gold);
  outline-offset: 1px;
}

.month-field {
  min-width: min(100%, 220px);
}

.ghost-btn,
.add-btn,
.icon-btn {
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.ghost-btn,
.add-btn {
  min-height: 48px;
  padding: 10px 16px;
  border-radius: 12px;
}

.ghost-btn:hover,
.add-btn:hover,
.icon-btn:hover {
  background: #f7f1e4;
}

.ghost-btn:disabled,
.add-btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.result {
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: var(--card);
  border: 1px solid var(--line);
}

.result[data-status="profit"] {
  background: linear-gradient(180deg, #f3faf6 0%, var(--card) 58%);
  border-color: #c6dfd1;
}

.result[data-status="loss"] {
  background: linear-gradient(180deg, #fdf4f3 0%, var(--card) 58%);
  border-color: #ebc8c4;
}

.result-kicker {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--even);
}

.result[data-status="profit"] .result-kicker,
.result[data-status="profit"] .result-amount {
  color: var(--income);
}

.result[data-status="loss"] .result-kicker,
.result[data-status="loss"] .result-amount {
  color: var(--loss);
}

.result-amount {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: clamp(2.4rem, 8vw, 4rem);
  font-weight: 640;
  letter-spacing: -0.03em;
  line-height: 1;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.result-grid dt {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 13px;
}

.result-grid dd {
  margin: 0;
  font-weight: 650;
}

.margin-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.ledgers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.ledger {
  padding: 18px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.ledger.income {
  background: linear-gradient(180deg, var(--income-soft), var(--card) 90px);
}

.ledger.expense {
  background: linear-gradient(180deg, var(--loss-soft), var(--card) 90px);
}

.ledger-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.ledger h2 {
  margin: 0;
}

.line-list {
  display: grid;
  gap: 10px;
}

.line {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: start;
}

.line-fields {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(110px, 0.9fr);
  gap: 8px;
}

.amount-wrap {
  position: relative;
}

.amount-wrap .peso {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.amount-wrap input {
  padding-left: 28px;
}

.icon-btn {
  min-height: 48px;
  padding: 0 12px;
  border-radius: 12px;
}

@media (max-width: 800px) {
  .ledgers,
  .result-grid,
  .line-fields {
    grid-template-columns: 1fr;
  }

  .page {
    padding-top: 28px;
  }
}