:root {
  --color-primary: #ce0f69;
  --color-secondary-teal: #009ca6;
  --color-secondary-purple: #68478d;
  --color-tertiary-gold: #ffb81c;
  --color-tertiary-black: #000000;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 24px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #f4f5f7;
  color: var(--color-tertiary-black);
}

.card {
  width: 100%;
  max-width: 440px;
  background: #ffffff;
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  border-top: 6px solid transparent;
  border-image: linear-gradient(
    90deg,
    var(--color-primary),
    var(--color-secondary-teal),
    var(--color-secondary-purple),
    var(--color-tertiary-gold)
  );
  border-image-slice: 1;
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.subtitle {
  font-size: 0.9rem;
  color: #6b7280;
  margin-bottom: 28px;
  line-height: 1.4;
}

.input-group {
  margin-bottom: 28px;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: #374151;
}

.input-row {
  display: flex;
  gap: 10px;
}

.input-wrapper {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 0 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input-wrapper:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(206, 15, 105, 0.12);
}

.currency-symbol {
  font-size: 1.1rem;
  color: #6b7280;
  margin-right: 6px;
}

#income {
  flex: 1;
  min-width: 0;
  width: 100%;
  border: none;
  outline: none;
  padding: 12px 0;
  font-size: 1.1rem;
  color: var(--color-tertiary-black);
  background: transparent;
  -moz-appearance: textfield;
}

#income::-webkit-outer-spin-button,
#income::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.currency-select {
  flex-shrink: 0;
  width: 100px;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 0 10px;
  font-size: 0.95rem;
  color: var(--color-tertiary-black);
  background: #ffffff;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.currency-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(206, 15, 105, 0.12);
}

.results {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: 10px;
  background: #f9fafb;
}

.result-label {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.needs .dot { background: var(--color-primary); }
.wants .dot { background: var(--color-secondary-teal); }
.savings .dot { background: var(--color-tertiary-gold); }

.result-label div {
  display: flex;
  flex-direction: column;
}

.result-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.result-percent {
  font-size: 0.8rem;
  color: #6b7280;
}

.result-amount {
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.bar {
  display: flex;
  width: 100%;
  height: 10px;
  border-radius: 6px;
  overflow: hidden;
  background: #e5e7eb;
}

.bar-segment {
  height: 100%;
}

.bar-needs { background: var(--color-primary); width: 50%; }
.bar-wants { background: var(--color-secondary-teal); width: 30%; }
.bar-savings { background: var(--color-tertiary-gold); width: 20%; }

.explainer {
  width: 100%;
  max-width: 440px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  overflow: hidden;
}

.explainer summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 24px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-tertiary-black);
}

.explainer summary::-webkit-details-marker {
  display: none;
}

.explainer summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.explainer summary::after {
  content: "";
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border-right: 2px solid #6b7280;
  border-bottom: 2px solid #6b7280;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.explainer[open] summary::after {
  transform: rotate(-135deg);
}

.explainer[open] summary {
  border-bottom: 1px solid #f0f1f3;
}

.explainer-content {
  padding: 4px 24px 24px;
}

.explainer-content h2 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-top: 18px;
  margin-bottom: 6px;
}

.explainer-content h2:first-child {
  margin-top: 0;
}

.explainer-content p {
  font-size: 0.9rem;
  line-height: 1.55;
  color: #374151;
}

.explainer-content ul {
  margin-top: 4px;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.explainer-content li {
  font-size: 0.9rem;
  line-height: 1.5;
  color: #374151;
}

.powered-by a {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: #6b7280;
  font-size: 0.85rem;
  transition: color 0.15s ease;
}

.powered-by a:hover {
  color: var(--color-tertiary-black);
}

.powered-by-logo {
  width: 20px;
  height: 20px;
  border-radius: 5px;
}

.powered-by strong {
  color: var(--color-primary);
  font-weight: 700;
}