.ac-wrapper {
  --ac-accent: #0ea5e9;
  --ac-accent-dim: rgba(14,165,233,0.12);
  --ac-surface: var(--bg-surface);
  --ac-border: var(--border-color);
  --ac-text: var(--text-main);
  --ac-muted: var(--text-muted);

  width: 100%;
  padding: 1rem 0;
}

.ac-card {
  background: var(--ac-surface);
  width: calc(100% - 24px);
  max-width: 900px;
  margin: 0 auto;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--ac-border);
  color: var(--ac-text);
  display: flex;
  flex-direction: column;
}

@media (min-width: 1024px) {
  .ac-card {
    flex-direction: row;
    min-height: 600px;
  }
}

.ac-left {
  flex: 0 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

@media (min-width: 1024px) {
  .ac-left {
    flex: 1 1 auto;
    width: auto;
    min-width: 280px;
  }
}

.ac-unit-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 10px;
  background: var(--bg-page);
  border: 1px solid var(--ac-border);
  align-self: flex-start;
}

.ac-unit-toggle button {
  padding: 5px 10px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--ac-muted);
  font-size: 0.6875rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s;
}

.ac-power-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px;
  border-radius: 8px;
  background: var(--bg-page);
  border: 1px solid var(--ac-border);
}

.ac-power-toggle button {
  padding: 4px 8px;
  border-radius: 5px;
  border: none;
  background: transparent;
  color: var(--ac-muted);
  font-size: 0.625rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.ac-power-toggle button.active {
  background: var(--ac-accent);
  color: #fff;
}

.ac-unit-toggle button.active {
  background: var(--ac-accent);
  color: #fff;
}

.ac-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ac-field-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.ac-label {
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ac-muted);
  flex-shrink: 0;
}

.ac-val {
  font-size: 0.875rem;
  font-weight: 900;
  color: var(--ac-accent);
  white-space: nowrap;
}

.ac-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-muted);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.ac-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ac-accent);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(14,165,233,0.3);
  transition: transform 0.15s;
}

.ac-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.ac-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ac-accent);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(14,165,233,0.3);
}

.ac-steps {
  display: flex;
  gap: 6px;
}

.ac-step {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid var(--ac-border);
  background: var(--bg-page);
  color: var(--ac-text);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.ac-step:hover {
  border-color: var(--ac-accent);
  color: var(--ac-accent);
}

.ac-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.ac-select-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ac-select {
  padding: 10px 36px 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--ac-border);
  background: var(--bg-page);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  color: var(--ac-text);
  font-size: 0.875rem;
  font-weight: 700;
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.ac-select:focus {
  border-color: var(--ac-accent);
  box-shadow: 0 0 0 3px var(--ac-accent-dim);
}

.ac-right {
  flex: 0 0 auto;
  width: 100%;
  padding: 24px;
  border-top: 1px solid var(--ac-border);
  background: var(--bg-page);
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .ac-right {
    width: 300px;
    border-top: none;
    border-left: 1px solid var(--ac-border);
  }
}

.ac-ring-wrap {
  position: relative;
  width: 160px;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ac-ring-wrap svg {
  position: absolute;
  inset: 0;
  transform: rotate(-90deg);
}

.ac-ring-glow {
  position: absolute;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s;
}

.ac-ring-glow.active {
  opacity: 1;
  animation: ac-glow-pulse 2s ease-in-out infinite;
}

@keyframes ac-glow-pulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(14,165,233,0.2);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 40px rgba(14,165,233,0.4);
    transform: scale(1.05);
  }
}

.ac-ring-bg {
  fill: none;
  stroke: var(--bg-muted);
  stroke-width: 10;
}

.ac-ring-fill {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), stroke 0.5s ease;
}

.ac-ring-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.ac-ring-label {
  font-size: 0.625rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ac-muted);
}

.ac-ring-btu {
  font-size: 1.75rem;
  font-weight: 900;
  line-height: 1;
  color: var(--ac-text);
}

.ac-ring-unit {
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--ac-muted);
}

.ac-mini-room {
  padding: 10px;
  border-radius: 14px;
  background: var(--ac-surface);
  border: 1px solid var(--ac-border);
  transition: all 0.5s;
}

.ac-mini-room svg {
  display: block;
}

.ac-room-wall {
  fill: var(--bg-page);
  stroke: var(--ac-border);
  stroke-width: 1.5;
  transition: fill 0.5s;
}

.ac-room-window {
  fill: #bfdbfe;
  transition: fill 0.5s;
}

.ac-room-person {
  fill: #94a3b8;
  transition: fill 0.5s;
}

.ac-room-pc {
  fill: #475569;
  transition: fill 0.5s;
}

.ac-room-sun {
  fill: #fbbf24;
  transition: fill 0.5s;
}

.ac-theme-low .ac-room-wall { fill: #e0f2fe; }
.ac-theme-low .ac-card { border-color: #7dd3fc; }

.ac-theme-med .ac-room-wall { fill: #fef3c7; }
.ac-theme-med .ac-card { border-color: #fcd34d; }

.ac-theme-high .ac-room-wall { fill: #fee2e2; }
.ac-theme-high .ac-card { border-color: #fca5a5; }

.ac-stats {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.ac-stat {
  padding: 12px;
  border-radius: 12px;
  background: var(--ac-surface);
  border: 1px solid var(--ac-border);
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
}

.ac-stat-label {
  font-size: 0.625rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ac-muted);
}

.ac-stat-val {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--ac-accent);
}

.ac-breakdown {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ac-bd-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 9px;
  border-radius: 8px;
  background: var(--ac-surface);
  border: 1px solid var(--ac-border);
}

.ac-bd-label {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--ac-text);
  min-width: 100px;
}

.ac-bd-bar-wrap {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-muted);
  overflow: hidden;
}

.ac-bd-bar {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, #0ea5e9, #22c55e);
  transition: width 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.ac-bd-val {
  font-size: 0.6875rem;
  font-weight: 800;
  color: var(--ac-muted);
  min-width: 48px;
  text-align: right;
}

.ac-peak {
  animation: ac-peak-in 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes ac-peak-in {
  0% { transform: scale(1); }
  50% { transform: scale(1.02); }
  100% { transform: scale(1); }
}