/* PC Bottleneck Calculator — large two-column layout */
.pbc-calculator {
  width: 100%;
  max-width: 100%;
  margin: 0 auto 1.5rem;
  padding: 0 0.75rem;
  overflow-x: hidden;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: #CBD5E1 !important;
  line-height: 1.55;
  clear: both;
  --pbc-bg: #0F172A;
  --pbc-panel: #1E293B;
  --pbc-panel2: #162033;
  --pbc-border: #334155;
  --pbc-heading: #E2E8F0;
  --pbc-text: #CBD5E1;
  --pbc-green: #22C55E;
  --pbc-yellow: #EAB308;
  --pbc-red: #EF4444;
  --pbc-cyan: #38BDF8;
  --pbc-muted: #94A3B8;
}

.pbc-calculator *,
.pbc-calculator *::before,
.pbc-calculator *::after {
  box-sizing: border-box;
}

/* Header */
.pbc-calculator .pbc-hero {
  width: 100%;
  padding: 2.5rem 2rem;
  margin-bottom: 2rem;
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
  border: 1px solid var(--pbc-border);
  border-radius: 18px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.pbc-calculator .pbc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% -30%, rgba(56, 189, 248, 0.12), transparent 60%);
  pointer-events: none;
}

.pbc-calculator .pbc-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
}

.pbc-calculator .pbc-eyebrow {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--pbc-cyan) !important;
  margin: 0 0 0.5rem;
}

.pbc-calculator .pbc-title {
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 600;
  margin: 0 0 0.85rem;
  padding: 0;
  letter-spacing: 0;
  color: var(--pbc-heading) !important;
  line-height: 1.15;
}

.pbc-calculator .pbc-desc {
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  color: var(--pbc-muted) !important;
  margin: 0 auto;
  max-width: 780px;
  line-height: 1.7;
}

/* Two columns: tool | info */
.pbc-calculator .pbc-layout {
  display: grid;
  gap: 1.5rem;
  width: 100%;
  align-items: start;
}

@media (min-width: 1024px) {
  .pbc-calculator {
    max-width: 1280px;
    padding: 0 1rem;
    margin-bottom: 2.5rem;
  }
  .pbc-calculator .pbc-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2rem;
  }
  .pbc-calculator .pbc-col-tool .pbc-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 1023px) {
  .pbc-calculator .pbc-layout {
    grid-template-columns: 1fr !important;
  }
  .pbc-calculator .pbc-card {
    padding: 1rem 0.875rem;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  }
  .pbc-calculator .pbc-col-tool .pbc-grid {
    grid-template-columns: 1fr !important;
  }
  .pbc-calculator .pbc-meters {
    grid-template-columns: 1fr !important;
  }
  .pbc-calculator .pbc-score-box {
    flex-direction: column;
    align-items: flex-start;
  }
  .pbc-calculator .pbc-card-head {
    flex-wrap: wrap;
  }
  .pbc-calculator select {
    font-size: 16px !important;
    min-height: 48px;
  }
  .pbc-calculator button.pbc-go {
    font-size: 1rem;
    padding: 1rem;
    min-height: 48px;
  }
  .pbc-calculator a.pbc-amz {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    word-break: break-word;
  }
  .pbc-calculator .pbc-title {
    font-weight: 600;
    font-size: clamp(1.25rem, 5vw, 1.75rem);
  }
  .pbc-calculator .pbc-ph-title,
  .pbc-calculator .pbc-guide-row strong {
    font-weight: 600;
    color: var(--pbc-heading) !important;
  }
}

@media (max-width: 480px) {
  .pbc-calculator {
    padding: 0 0.5rem;
  }
  .pbc-calculator .pbc-pct {
    font-size: clamp(2rem, 14vw, 3rem) !important;
  }
  .pbc-calculator .pbc-badge {
    font-size: 0.75rem;
    padding: 0.4rem 0.75rem;
  }
}

.pbc-calculator .pbc-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 0;
}

.pbc-calculator .pbc-card {
  background: var(--pbc-panel) !important;
  border: 1px solid var(--pbc-border);
  border-radius: 16px;
  padding: 1.75rem 2rem;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.pbc-calculator .pbc-card-head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.35rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--pbc-border);
}

.pbc-calculator .pbc-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: 12px;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.pbc-calculator .pbc-t {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--pbc-cyan) !important;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0;
}

.pbc-calculator .pbc-t-sub {
  font-size: 0.88rem;
  color: var(--pbc-muted) !important;
  margin: 0.2rem 0 0;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
}

.pbc-calculator .pbc-grid {
  display: grid;
  gap: 1.15rem;
  grid-template-columns: 1fr;
}

.pbc-calculator .pbc-field label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--pbc-muted) !important;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pbc-calculator select {
  width: 100%;
  padding: 1rem 1.1rem;
  border-radius: 12px;
  border: 1px solid var(--pbc-border) !important;
  background: var(--pbc-panel2) !important;
  color: var(--pbc-heading) !important;
  font-size: 1.05rem;
  line-height: 1.4;
  min-height: 54px;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.pbc-calculator select:hover {
  border-color: #44445a !important;
}

.pbc-calculator select:focus {
  outline: none;
  border-color: var(--pbc-green) !important;
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.18);
}

.pbc-calculator button.pbc-go {
  width: 100%;
  margin-top: 1.35rem;
  padding: 1.15rem 1.75rem;
  border: none;
  border-radius: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  color: #000 !important;
  background: linear-gradient(135deg, var(--pbc-green), #00bb66) !important;
  box-shadow: 0 6px 28px rgba(0, 255, 136, 0.35);
  transition: transform 0.15s, box-shadow 0.2s, filter 0.2s;
}

.pbc-calculator button.pbc-go:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 36px rgba(0, 255, 136, 0.45);
  filter: brightness(1.06);
}

/* Guide panel (right, always visible) */
.pbc-calculator .pbc-guide-card {
  background: linear-gradient(160deg, #1E293B 0%, #162033 100%) !important;
}

.pbc-calculator .pbc-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  background: var(--pbc-panel2);
  border-radius: 14px;
  border: 1px solid var(--pbc-border);
}

.pbc-calculator .pbc-visual-cpu,
.pbc-calculator .pbc-visual-gpu {
  flex: 1;
  text-align: center;
  padding: 1rem 0.5rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.pbc-calculator .pbc-visual-cpu {
  background: rgba(0, 212, 255, 0.12);
  border: 1px solid rgba(0, 212, 255, 0.35);
  color: var(--pbc-cyan) !important;
}

.pbc-calculator .pbc-visual-gpu {
  background: rgba(0, 255, 136, 0.12);
  border: 1px solid rgba(0, 255, 136, 0.35);
  color: var(--pbc-green) !important;
}

.pbc-calculator .pbc-visual-arrow {
  font-size: 1.5rem;
  color: var(--pbc-muted) !important;
  flex-shrink: 0;
}

.pbc-calculator .pbc-guide-intro {
  font-size: 1rem;
  color: var(--pbc-text) !important;
  margin: 0 0 1.25rem;
  line-height: 1.65;
}

.pbc-calculator .pbc-guide-intro strong {
  color: var(--pbc-green) !important;
}

.pbc-calculator .pbc-score-guide {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.pbc-calculator .pbc-guide-row {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  border-radius: 12px;
  border: 1px solid var(--pbc-border);
  background: var(--pbc-panel2) !important;
}

.pbc-calculator .pbc-guide-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.pbc-calculator .pbc-guide-good .pbc-guide-dot { background: var(--pbc-green); box-shadow: 0 0 10px var(--pbc-green); }
.pbc-calculator .pbc-guide-ok .pbc-guide-dot { background: var(--pbc-yellow); box-shadow: 0 0 10px var(--pbc-yellow); }
.pbc-calculator .pbc-guide-bad .pbc-guide-dot { background: var(--pbc-red); box-shadow: 0 0 10px var(--pbc-red); }

.pbc-calculator .pbc-guide-row strong {
  display: block;
  font-size: 0.95rem;
  color: var(--pbc-heading) !important;
  margin-bottom: 0.2rem;
}

.pbc-calculator .pbc-guide-row span {
  font-size: 0.88rem;
  color: var(--pbc-muted) !important;
  line-height: 1.5;
}

/* Placeholder */
.pbc-calculator .pbc-out.pbc-result {
  display: none;
}

.pbc-calculator .pbc-out.pbc-result.pbc-show {
  display: block;
  animation: pbcFadeIn 0.4s ease;
}

.pbc-calculator .pbc-out.pbc-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 200px;
  border-style: dashed;
  border-color: #3a3a52;
  padding: 2rem;
}

.pbc-calculator .pbc-ph-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  opacity: 0.7;
}

.pbc-calculator .pbc-ph-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--pbc-heading) !important;
  margin: 0 0 0.5rem;
}

.pbc-calculator .pbc-ph-text {
  color: var(--pbc-muted) !important;
  font-size: 1rem;
  max-width: 360px;
  margin: 0;
  line-height: 1.65;
}

.pbc-calculator .pbc-col-tool:has(.pbc-result.pbc-show) .pbc-placeholder {
  display: none;
}

@keyframes pbcFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Verdict banner */
.pbc-calculator .pbc-verdict {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.9rem 1.15rem;
  border-radius: 12px;
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
  font-weight: 700;
  border: 1px solid;
}

.pbc-calculator .pbc-verdict-good {
  background: rgba(0, 255, 136, 0.1);
  border-color: rgba(0, 255, 136, 0.4);
  color: var(--pbc-green) !important;
}

.pbc-calculator .pbc-verdict-ok {
  background: rgba(255, 204, 0, 0.1);
  border-color: rgba(255, 204, 0, 0.4);
  color: var(--pbc-yellow) !important;
}

.pbc-calculator .pbc-verdict-bad {
  background: rgba(255, 51, 85, 0.1);
  border-color: rgba(255, 51, 85, 0.4);
  color: var(--pbc-red) !important;
}

.pbc-calculator .pbc-verdict-icon {
  font-size: 1.25rem;
}

/* Score */
.pbc-calculator .pbc-score-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.35rem;
  padding: 1.5rem;
  background: var(--pbc-panel2) !important;
  border-radius: 14px;
  border: 1px solid var(--pbc-border);
}

.pbc-calculator .pbc-pct {
  font-size: clamp(3rem, 8vw, 4.25rem);
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.pbc-calculator .pbc-pct-label {
  font-size: 1rem;
  color: var(--pbc-muted) !important;
  font-weight: 600;
}

.pbc-calculator .pbc-badge {
  padding: 0.55rem 1.15rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pbc-calculator .pbc-green { color: var(--pbc-green) !important; }
.pbc-calculator .pbc-green .pbc-badge {
  background: rgba(0, 255, 136, 0.15);
  border: 1px solid var(--pbc-green);
  color: var(--pbc-green) !important;
}
.pbc-calculator .pbc-yellow { color: var(--pbc-yellow) !important; }
.pbc-calculator .pbc-yellow .pbc-badge {
  background: rgba(255, 204, 0, 0.15);
  border: 1px solid var(--pbc-yellow);
  color: var(--pbc-yellow) !important;
}
.pbc-calculator .pbc-red { color: var(--pbc-red) !important; }
.pbc-calculator .pbc-red .pbc-badge {
  background: rgba(255, 51, 85, 0.15);
  border: 1px solid var(--pbc-red);
  color: var(--pbc-red) !important;
}

.pbc-calculator .pbc-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--pbc-muted) !important;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pbc-calculator .pbc-track {
  height: 20px;
  background: var(--pbc-panel2);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 1.35rem;
  border: 1px solid var(--pbc-border);
}

.pbc-calculator .pbc-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.65s cubic-bezier(0.22, 1, 0.36, 1);
  width: 0;
}

.pbc-calculator .pbc-green .pbc-fill {
  background: linear-gradient(90deg, #00cc6a, var(--pbc-green));
  box-shadow: 0 0 16px rgba(0, 255, 136, 0.4);
}
.pbc-calculator .pbc-yellow .pbc-fill {
  background: linear-gradient(90deg, #cc9900, var(--pbc-yellow));
}
.pbc-calculator .pbc-red .pbc-fill {
  background: linear-gradient(90deg, #cc2244, var(--pbc-red));
}

.pbc-calculator .pbc-perf-summary {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--pbc-heading) !important;
  margin: 0 0 1rem;
  line-height: 1.55;
}

.pbc-calculator .pbc-note {
  font-size: 1rem;
  color: var(--pbc-text) !important;
  padding: 1.1rem 1.2rem;
  background: var(--pbc-panel2) !important;
  border-left: 4px solid var(--pbc-cyan);
  border-radius: 0 12px 12px 0;
  margin: 0 0 1.35rem;
  line-height: 1.7;
}

.pbc-calculator .pbc-note b { color: #fff !important; }
.pbc-calculator .pbc-note .cpu { color: var(--pbc-yellow) !important; }
.pbc-calculator .pbc-note .gpu { color: var(--pbc-red) !important; }

.pbc-calculator .pbc-meters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.15rem;
  margin-bottom: 1.25rem;
}

.pbc-calculator .pbc-meter label {
  display: block;
  font-size: 0.75rem;
  color: var(--pbc-muted) !important;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}

.pbc-calculator .pbc-meter-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--pbc-heading) !important;
  margin-bottom: 0.4rem;
}

.pbc-calculator .pbc-meter-bar {
  height: 10px;
  background: var(--pbc-panel2);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--pbc-border);
}

.pbc-calculator .pbc-meter-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.5s ease;
  width: 0;
}

.pbc-calculator .pbc-meter-fill.pbc-m-cpu {
  background: linear-gradient(90deg, #0088cc, var(--pbc-cyan));
}
.pbc-calculator .pbc-meter-fill.pbc-m-gpu {
  background: linear-gradient(90deg, #00aa55, var(--pbc-green));
}

.pbc-calculator .pbc-limiter {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.85rem 1rem;
  background: var(--pbc-panel2);
  border-radius: 10px;
  border: 1px solid var(--pbc-border);
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

.pbc-calculator .pbc-limiter-label {
  color: var(--pbc-muted) !important;
}

.pbc-calculator .pbc-limiter-val {
  font-weight: 700;
  color: var(--pbc-heading) !important;
}

.pbc-calculator .pbc-up {
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--pbc-border);
}

.pbc-calculator .pbc-upg {
  font-size: 1rem;
  color: var(--pbc-text) !important;
  margin: 0 0 0.85rem;
  font-weight: 600;
}

.pbc-calculator a.pbc-amz {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, #232f3e, #131921) !important;
  border: 1px solid #ff9900 !important;
  color: var(--pbc-heading) !important;
  text-decoration: none !important;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.15s, color 0.2s, box-shadow 0.2s;
}

.pbc-calculator a.pbc-amz:hover {
  color: #ff9900 !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 153, 0, 0.25);
}

.pbc-calculator .pbc-foot {
  margin-top: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--pbc-muted) !important;
}