:root {
  --bf-navy: #163A5F;
  --bf-green: #2E7D4F;
  --bf-heading: #162B45;
  --bf-text: #222222;
  --bf-link: #0066CC;
  --bf-light-blue: #F3F7FB;
  --bf-light-green: #F2F8F4;
  --bf-light-gray: #F6F7F8;
  --bf-border: #E2E6EA;
  --bf-white: #FFFFFF;
  --bf-danger: #A32626;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; background: transparent; }

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--bf-text);
  line-height: 1.5;
}

.bf-app {
  max-width: 920px;
  margin: 0 auto;
  padding: 4px;
}

.bf-card,
.bf-results {
  background: var(--bf-white);
  border: 1px solid var(--bf-border);
  border-radius: 10px;
  padding: 22px;
  margin-bottom: 18px;
}

.bf-intro { background: var(--bf-light-blue); }

h1, h2, h3 {
  color: var(--bf-heading);
  line-height: 1.25;
  margin-top: 0;
}

h1 { font-size: 30px; margin-bottom: 10px; }
h2 { font-size: 22px; margin-bottom: 8px; }
h3 { font-size: 18px; }
p { margin: 0 0 12px; }

.bf-help { color: #555; }

.bf-privacy {
  margin-top: 14px;
  margin-bottom: 0;
  padding: 12px 14px;
  border-left: 4px solid var(--bf-navy);
  background: #fff;
}

.bf-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin-top: 16px;
}

.bf-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  font-weight: 600;
  color: var(--bf-heading);
}

.bf-money {
  display: flex;
  align-items: center;
  min-height: 46px;
  border: 1px solid #BCC5CD;
  border-radius: 7px;
  background: #fff;
  overflow: hidden;
}

.bf-money:focus-within {
  border-color: var(--bf-navy);
  box-shadow: 0 0 0 3px rgba(22,58,95,.12);
}

.bf-prefix {
  padding-left: 12px;
  padding-right: 6px;
  color: #444;
}

.bf-money input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  box-shadow: none;
  padding: 11px 12px 11px 0;
  font: inherit;
  font-size: 16px;
  color: var(--bf-text);
  background: transparent;
}

.bf-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 8px 0 6px;
}

.bf-btn {
  min-height: 46px;
  border-radius: 7px;
  padding: 12px 20px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

.bf-btn-primary {
  border: 1px solid var(--bf-green);
  background: var(--bf-green);
  color: #fff;
}

.bf-btn-secondary {
  border: 1px solid var(--bf-border);
  background: var(--bf-light-gray);
  color: var(--bf-heading);
}

.bf-btn:focus-visible,
.bf-money input:focus-visible {
  outline: 3px solid rgba(0,102,204,.25);
  outline-offset: 2px;
}

.bf-error {
  min-height: 24px;
  margin: 8px 0 0;
  color: var(--bf-danger);
  font-weight: 600;
}

.bf-results {
  background: var(--bf-light-blue);
  margin-top: 20px;
}

.bf-main-result {
  text-align: center;
  border: 2px solid var(--bf-green);
  background: var(--bf-light-green);
  border-radius: 10px;
  padding: 22px;
  margin: 18px 0;
}

.bf-main-result span { display: block; font-weight: 700; }
.bf-main-result strong {
  display: block;
  margin-top: 4px;
  color: var(--bf-green);
  font-size: clamp(32px, 7vw, 46px);
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.bf-main-result.is-deficit { border-color: var(--bf-danger); background: #FFF6F6; }
.bf-main-result.is-deficit strong { color: var(--bf-danger); }
.bf-main-result.is-balanced { border-color: var(--bf-navy); background: var(--bf-light-blue); }
.bf-main-result.is-balanced strong { color: var(--bf-navy); }

.bf-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.bf-result-card {
  background: #fff;
  border: 1px solid var(--bf-border);
  border-radius: 8px;
  padding: 15px;
}

.bf-result-card span { display: block; font-size: 14px; }
.bf-result-card strong { display: block; margin-top: 3px; color: var(--bf-heading); font-size: 21px; overflow-wrap: anywhere; }

.bf-message {
  background: #fff;
  border-left: 4px solid var(--bf-navy);
  padding: 14px 15px;
  margin: 18px 0 24px;
}

.bf-table-wrap { overflow-x: auto; }
.bf-table { width: 100%; border-collapse: collapse; background: #fff; }
.bf-table th, .bf-table td { padding: 11px; border: 1px solid var(--bf-border); text-align: left; }
.bf-table th { background: var(--bf-light-gray); color: var(--bf-heading); }
.bf-table th:nth-child(2), .bf-table th:nth-child(3), .bf-table td:nth-child(2), .bf-table td:nth-child(3) { text-align: right; }
.bf-note { margin: 14px 0 0; color: #555; font-size: 14px; }

@media (max-width: 640px) {
  .bf-app { padding: 2px; }
  .bf-card, .bf-results { padding: 16px; }
  .bf-grid, .bf-result-grid { grid-template-columns: 1fr; }
  .bf-actions { flex-direction: column; }
  .bf-btn { width: 100%; }
  h1 { font-size: 26px; }
}