/* Self-hosted OFL fonts (no remote font CDN). Space Grotesk + Figtree, SIL Open Font License 1.1. */

@font-face {
  font-family: 'Figtree';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/figtree-latin-400-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Figtree';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/figtree-latin-500-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Figtree';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/figtree-latin-600-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Figtree';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/assets/fonts/figtree-latin-700-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/space-grotesk-latin-500-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/space-grotesk-latin-600-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/assets/fonts/space-grotesk-latin-700-normal.woff2') format('woff2');
}

:root {
  color-scheme: light;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(1200px 700px at 8% -10%, rgba(20, 184, 166, 0.28), transparent 55%),
    radial-gradient(900px 600px at 92% 8%, rgba(59, 130, 246, 0.18), transparent 50%),
    radial-gradient(800px 500px at 70% 100%, rgba(251, 191, 36, 0.16), transparent 45%),
    linear-gradient(165deg, #e7f3ef 0%, #f7f5f0 42%, #dceaf5 100%);
  background-attachment: fixed;
}

.bg-orb {
  position: absolute;
  border-radius: 9999px;
  filter: blur(40px);
  pointer-events: none;
}

.tool-surface {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(20, 35, 31, 0.08);
}

.control-field select {
  width: 100%;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2314231f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.5rem;
}

/* Range: input tall as thumb; WebKit needs explicit margin-top to center thumb on track. */
input[type='range'] {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 1.35rem;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  outline: none;
  cursor: pointer;
}

input[type='range']::-webkit-slider-runnable-track {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 0.4rem;
  border: none;
  border-radius: 9999px;
  background: linear-gradient(90deg, #14b8a6, #c2410c);
}

input[type='range']::-moz-range-track {
  width: 100%;
  height: 0.4rem;
  border: none;
  border-radius: 9999px;
  background: linear-gradient(90deg, #14b8a6, #c2410c);
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.35rem;
  height: 1.35rem;
  /* Center thumb on track: (0.4rem track − 1.35rem thumb) / 2 */
  margin-top: -0.475rem;
  border-radius: 9999px;
  background: #fff;
  border: 3px solid #0f766e;
  box-sizing: border-box;
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.35);
  cursor: pointer;
  transition: transform 0.15s ease;
}

input[type='range']::-webkit-slider-thumb:hover {
  transform: scale(1.08);
}

input[type='range']::-moz-range-thumb {
  width: 1.35rem;
  height: 1.35rem;
  border: 3px solid #0f766e;
  border-radius: 9999px;
  background: #fff;
  box-sizing: border-box;
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.35);
  cursor: pointer;
}

.result-number {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  transition: color 0.35s ease, transform 0.35s ease;
}

.result-number.is-updating {
  transform: translateY(-2px);
}

.savings-positive {
  color: #0f766e;
}

.savings-negative {
  color: #c2410c;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}