:root {
  --ink: #0f172a;
  --muted: #64748b;
  --surface: #ffffff;
  --canvas: #f1f5f9;
  --accent: #0d9488;
  --accent-2: #0369a1;
  --line: #e2e8f0;
  font-family: "DM Sans", system-ui, sans-serif;
}

.dark {
  --ink: #f1f5f9;
  --muted: #94a3b8;
  --surface: #0f172a;
  --canvas: #020617;
  --line: #1e293b;
}

html {
  scroll-behavior: smooth;
  min-height: 100%;
  background-color: #f1f5f9;
}

/*
 * Single page wash that scrolls with the document.
 * Use px-sized radials + no-repeat so layers cannot tile down tall pages.
 * (Sized gradients + default repeat was the vertical banding bug.)
 */
body {
  color: var(--ink);
  min-height: 100%;
  background-color: #f1f5f9;
  background-image:
    radial-gradient(ellipse 900px 420px at 12% 0%, rgba(13, 148, 136, 0.16), transparent),
    radial-gradient(ellipse 720px 360px at 100% 0%, rgba(3, 105, 161, 0.10), transparent),
    linear-gradient(180deg, #e7f6f4 0px, #f1f5f9 420px);
  background-repeat: no-repeat;
  background-position: top left, top right, top left;
  background-size: auto, auto, 100% 420px;
}

html.dark {
  background-color: #020617;
}

html.dark body {
  background-color: #020617;
  background-image:
    radial-gradient(ellipse 900px 420px at 12% 0%, rgba(45, 212, 191, 0.10), transparent),
    radial-gradient(ellipse 720px 360px at 100% 0%, rgba(56, 189, 248, 0.08), transparent),
    linear-gradient(180deg, #0b1220 0px, #020617 420px);
}

.font-display {
  font-family: "Fraunces", Georgia, serif;
}

.mesh-panel {
  background:
    linear-gradient(145deg, rgba(255,255,255,0.9), rgba(255,255,255,0.65)),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 12px,
      rgba(13, 148, 136, 0.03) 12px,
      rgba(13, 148, 136, 0.03) 13px
    );
}
.dark .mesh-panel {
  background:
    linear-gradient(145deg, rgba(15,23,42,0.95), rgba(15,23,42,0.8)),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 12px,
      rgba(45, 212, 191, 0.04) 12px,
      rgba(45, 212, 191, 0.04) 13px
    );
}

.calc-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.25);
  border-color: #0d9488;
}

.result-glow {
  animation: rise 0.35s ease-out;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.nav-blur {
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.kbd {
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  border-radius: 0.35rem;
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--canvas);
}

/* Scientific calculator keypad */
.sci-grid button {
  transition: transform 0.08s ease, background 0.15s ease;
}
.sci-grid button:active {
  transform: scale(0.96);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

.calc-field.is-hidden-field {
  display: none !important;
}

/* ——— Modern results card (AllCalci-style) ——— */
.calc-results-col {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.04);
  overflow: hidden;
}

.calc-results-empty {
  padding: 2rem 1.25rem;
  text-align: center;
}
.calc-results-empty-title {
  font-weight: 600;
  color: var(--ink);
}
.calc-results-empty-text {
  margin-top: 0.35rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.crc-hero {
  padding: 1.35rem 1.25rem 1rem;
  text-align: center;
  border-bottom: 1px solid var(--line);
}
.crc-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7dd3fc;
}
.dark .crc-label { color: #7dd3fc; }
.crc-primary {
  margin-top: 0.35rem;
  font-size: 2.35rem;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.crc-status {
  margin-top: 0.25rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.crc-gauge-wrap {
  padding: 0.5rem 1rem 0.15rem;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.crc-gauge {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  margin: 0 auto;
  overflow: visible;
}
.crc-gauge-center {
  text-anchor: middle;
  font-weight: 700;
  fill: var(--ink);
  font-size: 18px;
}
.crc-gauge-sub {
  text-anchor: middle;
  fill: var(--muted);
  font-size: 11px;
  font-weight: 500;
}

.crc-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--line);
}
.crc-stat {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line);
}
.crc-stat:nth-child(odd) { border-right: 1px solid var(--line); }
.crc-stat:nth-last-child(-n+2) { border-bottom: none; }
.crc-stat:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  border-right: none;
}
.crc-stat-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.crc-stat-value {
  margin-top: 0.2rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
}
.crc-stat-value.is-accent { color: #16a34a; }
.dark .crc-stat-value.is-accent { color: #4ade80; }

.crc-cats {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--line);
}
.crc-cats-title {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.55rem;
}
.crc-cat {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.5rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
}
.crc-cat.is-active {
  background: color-mix(in srgb, var(--canvas) 80%, #94a3b8);
  font-weight: 700;
}
.crc-swatch {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 0.15rem;
  flex-shrink: 0;
}
.crc-cat-label { flex: 1; color: var(--ink); }
.crc-cat-range { color: var(--muted); font-size: 0.8rem; }

.crc-note {
  padding: 0.75rem 1.1rem;
  font-size: 0.75rem;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  line-height: 1.45;
}

.crc-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  padding: 0.9rem 1rem;
}
.crc-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 0.75rem;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--canvas) 70%, transparent);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.crc-action:hover {
  background: var(--canvas);
  border-color: #cbd5e1;
}
.dark .crc-action:hover { border-color: #475569; }

/* Admin-managed 300×300 ad slots */
.opencalcy-ad-slot {
  display: flex;
  justify-content: center;
  margin: 1rem 0 1.25rem;
}
.opencalcy-ad-inner {
  width: 300px;
  height: 300px;
  max-width: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--canvas) 80%, transparent);
  border: 1px dashed var(--line);
  border-radius: 0.75rem;
}
.opencalcy-ad-inner > * {
  max-width: 300px;
  max-height: 300px;
}
.opencalcy-ad-slot[data-placement="calculator-sidebar"] {
  margin: 0;
}
.opencalcy-ad-slot[data-placement="calculator-sidebar"] .opencalcy-ad-inner {
  width: 100%;
  max-width: 300px;
  margin-inline: auto;
}

@media print {
  body * { visibility: hidden !important; }
  .calc-results-col, .calc-results-col * { visibility: visible !important; }
  .calc-results-col {
    position: absolute;
    left: 0; top: 0;
    width: 100%;
    box-shadow: none;
    border: none;
  }
  .crc-actions { display: none !important; }
  .opencalcy-ad-slot { display: none !important; }
}