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

:root {
  --green:     #16a34a;
  --green-dim: #dcfce7;
  --bg:        #f9fafb;
  --card:      #ffffff;
  --text:      #111827;
  --muted:     #6b7280;
  --border:    #e5e7eb;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

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

/* Landing */

.landing {
  display: flex;
  align-items: center;
  justify-content: center;
}

.landing-main {
  text-align: center;
  padding: 48px 24px;
}

.logo {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--green);
}

.tagline {
  margin-top: 8px;
  color: var(--muted);
  font-size: 1.05rem;
}

.country-grid {
  display: flex;
  gap: 16px;
  margin-top: 40px;
  flex-wrap: wrap;
  justify-content: center;
}

.country-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 32px 40px;
  background: var(--card);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.15s;
  min-width: 180px;
}

.country-card:hover {
  border-color: var(--green);
}

.flag {
  font-size: 2.5rem;
}

.country-name {
  font-weight: 600;
  font-size: 1.05rem;
}

.country-sub {
  font-size: 0.8rem;
  color: var(--muted);
}

/* Calculator pages */

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--green);
}

.nav-country {
  font-size: 0.95rem;
  color: var(--muted);
  margin-left: 12px;
}

.nav-link {
  font-size: 0.9rem;
  color: var(--green);
  font-weight: 500;
  border-bottom: 1px solid var(--green);
  padding-bottom: 1px;
}

.nav-link:hover {
  color: var(--text);
  border-color: var(--text);
}

.page {
  max-width: 560px;
  margin: 40px auto;
  padding: 0 16px 48px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 24px;
}

.card + .card {
  margin-top: 16px;
}

/* Mode toggle */

.toggle {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  gap: 0;
}

.toggle-btn {
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  padding: 6px 16px 8px;
  font-size: 0.875rem;
  cursor: pointer;
  color: var(--muted);
  font-family: inherit;
  margin-bottom: -1px;
}

.toggle-btn.active {
  color: var(--green);
  border-bottom-color: var(--green);
  font-weight: 600;
}

/* Inputs */

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 6px;
}

.loan-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  text-transform: none;
  letter-spacing: normal;
  margin-bottom: 0;
}

.loan-label input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: var(--green);
  cursor: pointer;
  flex-shrink: 0;
}

.loan-plan-select {
  display: none;
  margin-top: 8px;
}

.loan-status {
  font-size: 0.78rem;
  margin-top: 6px;
}

.loan-status.rpi-linked { color: var(--green); }
.loan-status.frozen     { color: var(--muted); }

.rpi-field {
  margin-top: 10px;
}

.rpi-field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 6px;
}

.rpi-field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
}

.rpi-field input:focus {
  outline: none;
  border-color: var(--green);
}

.info-link {
  font-size: 0.75rem;
  color: var(--muted);
  text-decoration: none;
  flex-shrink: 0;
}

.info-link:hover { color: var(--green); }

.info-link-inline {
  font-size: 0.72rem;
  color: var(--muted);
  text-decoration: none;
  vertical-align: middle;
  margin-left: 3px;
}

.info-link-inline:hover { color: var(--green); }

.input-wrap {
  position: relative;
}

.input-symbol {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 1rem;
  pointer-events: none;
}

.input-wrap input {
  width: 100%;
  padding: 10px 12px 10px 28px;
  border: 1px solid var(--border);
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  transition: border-color 0.15s;
}

.input-wrap input:focus {
  outline: none;
  border-color: var(--green);
  background: var(--card);
}

select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}

select:focus {
  outline: none;
  border-color: var(--green);
}

/* Results */

.result-hero {
  text-align: center;
  padding: 8px 0 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.result-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 4px;
}

.result-amount {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--green);
}

.result-monthly {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 2px;
}

.result-rate {
  display: block;
  margin-top: 8px;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 600;
}

.breakdown {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.breakdown tr:not(:last-child) td {
  border-bottom: 1px solid var(--border);
}

.breakdown td {
  padding: 9px 0;
  color: var(--text);
}

.breakdown td:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.breakdown .deduct {
  color: var(--muted);
}

.breakdown .total-row td {
  font-weight: 700;
  padding-top: 12px;
  color: var(--green);
  border-top: 2px solid var(--border) !important;
  border-bottom: none !important;
}

.reverse-gross {
  text-align: center;
  padding: 8px 0 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.reverse-gross .result-label {
  margin-bottom: 4px;
}

.reverse-gross .gross-amount {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 32px 0;
  font-size: 0.95rem;
}

@media (max-width: 480px) {
  .result-amount { font-size: 1.9rem; }
  .nav { padding: 12px 16px; }
}