/* ── Finance Calculators — extends main design system ─────────────────── */

.fc-page {
  min-height: 100vh;
  padding-top: 100px;
  padding-bottom: 80px;
  background: var(--bg);
}

.fc-page-header {
  text-align: center;
  margin-bottom: 48px;
}

.fc-page-header h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.12;
  margin-bottom: 14px;
}

.fc-page-header p {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.75;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: 28px;
}

.breadcrumbs a {
  color: var(--text-muted);
  transition: var(--transition);
}

.breadcrumbs a:hover { color: var(--accent); }

.breadcrumbs span[aria-current] {
  color: var(--accent);
  font-weight: 500;
}

.breadcrumb-sep { opacity: 0.4; }

/* Calculator cards grid (hub) */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.calc-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.calc-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(129,140,248,0.08) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.35s;
  pointer-events: none;
}

.calc-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.35);
}

.calc-card:hover::before { opacity: 1; }

.calc-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(129,140,248,0.12);
  border: 1px solid rgba(129,140,248,0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
}

.calc-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.calc-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 22px;
}

.calc-card .btn { align-self: flex-start; margin-top: auto; }

/* Calculator layout */
.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.calc-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.calc-panel h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 22px;
  color: var(--text);
}

.calc-panel h2 .panel-icon { margin-right: 8px; }

.form-grid {
  display: grid;
  gap: 16px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.input-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.input-group input,
.input-group select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  transition: var(--transition);
  outline: none;
  width: 100%;
}

.input-group input:focus,
.input-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(129,140,248,0.1);
}

.input-group input.input-error,
.input-group select.input-error {
  border-color: #f87171;
  box-shadow: 0 0 0 3px rgba(248,113,113,0.12);
}

.input-error-msg {
  font-size: 12px;
  color: #f87171;
  min-height: 16px;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* Results */
.results-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-faint);
  font-size: 14px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.result-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.result-item.full-width { grid-column: 1 / -1; }

.result-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-faint);
  margin-bottom: 6px;
}

.result-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

.result-value.accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-value.positive { color: var(--green); }

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Chart */
.chart-wrap {
  position: relative;
  height: 280px;
  margin-top: 20px;
}

/* Data table */
.data-table-wrap {
  overflow-x: auto;
  margin-top: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: right;
  border-bottom: 1px solid var(--border);
}

.data-table th:first-child,
.data-table td:first-child { text-align: left; }

.data-table th {
  background: var(--surface);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.data-table tr:last-child td { border-bottom: none; }

.data-table tbody tr:hover { background: rgba(129,140,248,0.04); }

/* Educational section */
.edu-section {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.edu-section h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  margin-bottom: 32px;
  text-align: center;
}

.edu-grid {
  display: grid;
  gap: 20px;
}

.edu-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
}

.edu-block h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.edu-block p,
.edu-block li {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

.edu-block ul {
  padding-left: 20px;
  list-style: disc;
}

.edu-block li { margin-bottom: 6px; list-style: disc; }

.formula-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  overflow-x: auto;
  margin: 12px 0;
  text-align: center;
}

.example-box {
  background: rgba(129,140,248,0.06);
  border: 1px solid rgba(129,140,248,0.18);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin-top: 10px;
}

/* FAQ accordion */
.faq-list { display: flex; flex-direction: column; gap: 10px; }

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover { color: var(--accent); }

.faq-question::after {
  content: '+';
  font-size: 18px;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 0.25s;
}

.faq-question[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* Other calculators nav */
.other-calcs {
  margin-top: 48px;
  text-align: center;
}

.other-calcs h3 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-faint);
  margin-bottom: 16px;
}

.other-calcs-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.other-calcs-links a {
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 99px;
  color: var(--text-muted);
  transition: var(--transition);
}

.other-calcs-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Toast */
.fc-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--card);
  border: 1px solid var(--border-hover);
  color: var(--text);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
  z-index: 200;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}

.fc-toast.show {
  opacity: 1;
  transform: none;
}

@media print {
  #navbar, .footer, .form-actions, .result-actions, .other-calcs, .edu-section, .breadcrumbs { display: none !important; }
  .fc-page { padding-top: 20px; }
  body { background: #fff; color: #000; }
  .calc-panel { border: 1px solid #ccc; break-inside: avoid; }
}

@media (max-width: 900px) {
  .calc-layout { grid-template-columns: 1fr; }
  .form-grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .result-grid { grid-template-columns: 1fr; }
  .fc-page { padding-top: 88px; }
}