.fmcc-calculator,
.fmcc-calculator * {
  box-sizing: border-box;
}

.fmcc-calculator {
  --fmcc-bg: #f5f6f8;
  --fmcc-card: #ffffff;
  --fmcc-card-strong: #f0f2f5;
  --fmcc-text: #1f2933;
  --fmcc-muted: #5f6b7a;
  --fmcc-border: #d9dee7;
  --fmcc-primary: #3e4653;
  --fmcc-primary-strong: #232a34;
  --fmcc-accent: #697386;
  --fmcc-danger: #9d2c2c;
  --fmcc-good: #1d6f52;
  --fmcc-focus: #2563eb;
  --fmcc-shadow: 0 18px 45px rgba(31, 41, 51, 0.12);
  --fmcc-radius: 20px;
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  color: var(--fmcc-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  line-height: 1.5;
}

.fmcc-shell[data-theme="dark"] {
  --fmcc-bg: #12161c;
  --fmcc-card: #1a2029;
  --fmcc-card-strong: #232b36;
  --fmcc-text: #f3f5f7;
  --fmcc-muted: #a9b3c1;
  --fmcc-border: #354052;
  --fmcc-primary: #d1d5db;
  --fmcc-primary-strong: #f8fafc;
  --fmcc-accent: #9aa7ba;
  --fmcc-danger: #f08b8b;
  --fmcc-good: #74d9af;
  --fmcc-focus: #60a5fa;
  --fmcc-shadow: 0 18px 45px rgba(0, 0, 0, 0.32);
}

.fmcc-shell {
  background: linear-gradient(135deg, var(--fmcc-bg), var(--fmcc-card-strong));
  border: 1px solid var(--fmcc-border);
  border-radius: 26px;
  padding: 16px;
  box-shadow: var(--fmcc-shadow);
  overflow: hidden;
}

.fmcc-header {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 10px 4px 18px;
}

.fmcc-header h2,
.fmcc-result-head h3,
.fmcc-card h3 {
  margin: 0;
  color: var(--fmcc-text);
  line-height: 1.15;
}

.fmcc-header h2 {
  font-size: clamp(1.65rem, 4vw, 2.65rem);
  letter-spacing: -0.04em;
}

.fmcc-kicker {
  margin: 0 0 5px;
  color: var(--fmcc-muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.fmcc-theme-toggle,
.fmcc-btn {
  appearance: none;
  border: 1px solid var(--fmcc-border);
  border-radius: 999px;
  background: var(--fmcc-card);
  color: var(--fmcc-text);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  min-height: 44px;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}

.fmcc-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  align-self: flex-start;
  padding: 10px 15px;
}

.fmcc-theme-toggle:hover,
.fmcc-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 9px 20px rgba(31, 41, 51, 0.12);
}

.fmcc-theme-toggle:focus-visible,
.fmcc-btn:focus-visible,
.fmcc-calculator input:focus-visible,
.fmcc-calculator select:focus-visible {
  outline: 3px solid var(--fmcc-focus);
  outline-offset: 2px;
}

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

.fmcc-card {
  background: rgba(255, 255, 255, 0.72);
  background: var(--fmcc-card);
  border: 1px solid var(--fmcc-border);
  border-radius: var(--fmcc-radius);
  padding: 18px;
  box-shadow: 0 12px 32px rgba(31, 41, 51, 0.08);
}

.fmcc-shell[data-theme="dark"] .fmcc-card {
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}

.fmcc-card h3 {
  font-size: 1.16rem;
  margin-bottom: 16px;
}

.fmcc-field-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 13px;
}

.fmcc-field-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 13px;
}

.fmcc-field-group label,
.fmcc-switch {
  color: var(--fmcc-text);
  font-size: 0.92rem;
  font-weight: 800;
}

.fmcc-field-group input,
.fmcc-field-group select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--fmcc-border);
  border-radius: 14px;
  background: var(--fmcc-card-strong);
  color: var(--fmcc-text);
  padding: 11px 13px;
  font: inherit;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.fmcc-field-group input[aria-invalid="true"] {
  border-color: var(--fmcc-danger);
  box-shadow: 0 0 0 3px rgba(157, 44, 44, 0.14);
}

.fmcc-input-unit {
  display: flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--fmcc-border);
  border-radius: 14px;
  background: var(--fmcc-card-strong);
}

.fmcc-input-unit input {
  border: 0;
  border-radius: 0;
  background: transparent;
}

.fmcc-input-unit span {
  padding: 0 12px;
  color: var(--fmcc-muted);
  font-weight: 800;
  white-space: nowrap;
}

.fmcc-range {
  padding: 0 !important;
  min-height: 32px !important;
}

.fmcc-toggle-row {
  display: grid;
  gap: 10px;
  margin: 8px 0 16px;
}

.fmcc-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.fmcc-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.fmcc-slider {
  position: relative;
  width: 50px;
  height: 28px;
  border-radius: 999px;
  background: var(--fmcc-border);
  flex: 0 0 auto;
  transition: background 160ms ease;
}

.fmcc-slider::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.25);
  transition: transform 160ms ease;
}

.fmcc-switch input:checked + .fmcc-slider {
  background: var(--fmcc-primary);
}

.fmcc-switch input:checked + .fmcc-slider::after {
  transform: translateX(22px);
}

.fmcc-switch input:focus-visible + .fmcc-slider {
  outline: 3px solid var(--fmcc-focus);
  outline-offset: 2px;
}

.fmcc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.fmcc-btn {
  padding: 10px 15px;
  min-width: 118px;
}

.fmcc-btn-primary {
  background: var(--fmcc-primary);
  color: var(--fmcc-bg);
  border-color: var(--fmcc-primary);
}

.fmcc-btn-danger {
  color: var(--fmcc-danger);
}

.fmcc-status {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--fmcc-muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.fmcc-result-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.fmcc-result-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--fmcc-card-strong), var(--fmcc-card));
  border: 1px solid var(--fmcc-border);
}

.fmcc-result-head h3 {
  font-size: clamp(2rem, 7vw, 3.2rem);
  letter-spacing: -0.06em;
}

.fmcc-badge {
  align-self: flex-start;
  border: 1px solid var(--fmcc-border);
  background: var(--fmcc-card);
  color: var(--fmcc-muted);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.86rem;
  font-weight: 900;
}

.fmcc-result-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.fmcc-metric {
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--fmcc-border);
  background: var(--fmcc-card-strong);
}

.fmcc-metric span {
  display: block;
  color: var(--fmcc-muted);
  font-size: 0.83rem;
  font-weight: 800;
}

.fmcc-metric strong {
  display: block;
  margin-top: 4px;
  font-size: 1.25rem;
  color: var(--fmcc-text);
}

.fmcc-summary {
  border-left: 4px solid var(--fmcc-good);
  background: var(--fmcc-card-strong);
  border-radius: 14px;
  padding: 12px 14px;
  color: var(--fmcc-muted);
  font-weight: 700;
}

.fmcc-chart-wrap {
  width: 100%;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--fmcc-border);
  background: var(--fmcc-card-strong);
  padding: 10px;
}

.fmcc-chart-wrap canvas {
  display: block;
  width: 100%;
  height: auto;
  max-height: 280px;
}

.fmcc-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--fmcc-border);
  border-radius: 16px;
}

.fmcc-breakdown {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  background: var(--fmcc-card);
}

.fmcc-breakdown caption {
  text-align: left;
  padding: 12px 14px;
  color: var(--fmcc-muted);
  font-weight: 900;
}

.fmcc-breakdown th,
.fmcc-breakdown td {
  padding: 12px 14px;
  border-top: 1px solid var(--fmcc-border);
  text-align: right;
}

.fmcc-breakdown th:first-child,
.fmcc-breakdown td:first-child {
  text-align: left;
}

.fmcc-breakdown th {
  color: var(--fmcc-text);
  background: var(--fmcc-card-strong);
  font-weight: 900;
}

.fmcc-breakdown td {
  color: var(--fmcc-muted);
  font-weight: 700;
}

@media (min-width: 640px) {
  .fmcc-shell {
    padding: 22px;
  }

  .fmcc-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .fmcc-field-row,
  .fmcc-result-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fmcc-result-head {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

@media (min-width: 1040px) {
  .fmcc-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
    align-items: start;
  }

  .fmcc-input-card:nth-of-type(1),
  .fmcc-input-card:nth-of-type(2),
  .fmcc-input-card:nth-of-type(3) {
    grid-column: 1;
  }

  .fmcc-result-card {
    grid-column: 2;
    grid-row: 1 / span 3;
    position: sticky;
    top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fmcc-calculator *,
  .fmcc-calculator *::before,
  .fmcc-calculator *::after {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .fmcc-theme-toggle,
  .fmcc-actions {
    display: none !important;
  }

  .fmcc-shell,
  .fmcc-card {
    box-shadow: none !important;
  }
}