.mk-energy,
.mk-energy * { box-sizing: border-box; }

.mk-energy {
  --mk-bg: #FCFAF7;
  --mk-card: #FFFFFF;
  --mk-border: #E7D8C8;
  --mk-accent: #E6761B;
  --mk-eyebrow: #C96A1A;
  --mk-text: #302820;
  --mk-muted: #6E6258;
  --mk-soft: #FFF3E8;
  --mk-danger: #8A2E22;
  width: 100%;
  color: var(--mk-text);
  font-family: inherit;
}

.mk-energy__shell {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(22px, 4vw, 42px);
  background: var(--mk-bg);
  border: 1px solid var(--mk-border);
  border-radius: 18px;
  box-shadow: 0 10px 28px rgba(48,40,32,0.06);
}

.mk-energy__intro { margin-bottom: 28px; }
.mk-energy__eyebrow { margin: 0 0 8px; color: var(--mk-eyebrow); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
.mk-energy__title { margin: 0 0 12px; line-height: 1.12; }
.mk-energy__lead { max-width: 780px; margin: 0 0 18px; font-size: 1.08rem; line-height: 1.7; }
.mk-energy__privacy, .mk-energy__notice { padding: 14px 16px; background: #fff; border: 1px solid var(--mk-border); border-radius: 14px; line-height: 1.55; }
.mk-energy__notice--warning { background: #FFF7E8; border-color: #E8C88C; }

.mk-energy__progress { height: 7px; margin: 0 0 10px; overflow: hidden; background: #EFE7DE; border-radius: 999px; }
.mk-energy__progress-bar { display: block; width: 25%; height: 100%; background: var(--mk-accent); transition: width .2s ease; }
.mk-energy__step-label { margin: 0 0 24px; color: var(--mk-muted); font-size: .95rem; font-weight: 700; }

.mk-energy fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.mk-energy legend { width: 100%; margin: 0 0 8px; padding: 0; font-size: clamp(1.45rem, 3vw, 2rem); font-weight: 800; line-height: 1.2; }
.mk-energy__help { margin: 0 0 20px; color: var(--mk-muted); line-height: 1.65; }

.mk-energy__grid { display: grid; gap: 18px; }
.mk-energy__grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.mk-energy__field { min-width: 0; }
.mk-energy__field--wide { margin-top: 26px; }
.mk-energy label, .mk-energy__label { display: block; margin-bottom: 7px; font-weight: 750; }
.mk-energy__input-unit { display: flex; align-items: stretch; }
.mk-energy input[type="number"], .mk-energy select {
  width: 100%; min-height: 48px; padding: 10px 12px; color: var(--mk-text); background: #fff;
  border: 1px solid #CFC1B2; border-radius: 12px; font: inherit;
}
.mk-energy select { cursor: pointer; }
.mk-energy__input-unit input { border-radius: 12px 0 0 12px; }
.mk-energy__input-unit span { display: flex; align-items: center; padding: 0 12px; color: var(--mk-muted); background: #F4EEE8; border: 1px solid #CFC1B2; border-left: 0; border-radius: 0 12px 12px 0; white-space: nowrap; }

.mk-energy input:focus-visible, .mk-energy select:focus-visible, .mk-energy button:focus-visible, .mk-energy summary:focus-visible {
  outline: 3px solid rgba(230,118,27,.35); outline-offset: 3px;
}

.mk-energy__choice-grid { display: grid; gap: 14px; }
.mk-energy__choice-grid--2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.mk-energy__choice { position: relative; display: block; margin: 0; cursor: pointer; }
.mk-energy__choice input { position: absolute; opacity: 0; pointer-events: none; }
.mk-energy__choice span { display: block; min-height: 100%; padding: 18px; background: #fff; border: 1px solid var(--mk-border); border-radius: 16px; transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease; }
.mk-energy__choice strong, .mk-energy__choice small { display: block; }
.mk-energy__choice small { margin-top: 6px; color: var(--mk-muted); font-weight: 400; line-height: 1.5; }
.mk-energy__choice input:checked + span { border-color: var(--mk-accent); box-shadow: 0 0 0 2px rgba(230,118,27,.17); }
.mk-energy__choice input:focus-visible + span { outline: 3px solid rgba(230,118,27,.35); outline-offset: 3px; }
.mk-energy__choice:hover span { transform: translateY(-1px); }

.mk-energy__check-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px 18px; }
.mk-energy__check-grid label { display: flex; gap: 9px; align-items: flex-start; margin: 0; font-weight: 500; line-height: 1.45; }
.mk-energy__check-grid input { margin-top: 4px; accent-color: var(--mk-accent); }

.mk-energy__actions, .mk-energy__result-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.mk-energy__button { min-height: 46px; padding: 11px 20px; color: #fff; background: var(--mk-accent); border: 1px solid var(--mk-accent); border-radius: 12px; font: inherit; font-weight: 800; cursor: pointer; }
.mk-energy__button:hover { filter: brightness(.94); }
.mk-energy__button--secondary { color: var(--mk-text); background: #fff; border-color: var(--mk-border); }

.mk-energy__errors { margin: 0 0 22px; padding: 16px 18px; color: var(--mk-danger); background: #FFF1EF; border: 1px solid #E7B7B0; border-radius: 14px; }
.mk-energy__errors ul { margin: 8px 0 0 20px; }

.mk-energy__result h3 { margin: 0 0 12px; font-size: clamp(1.5rem, 3vw, 2.2rem); }
.mk-energy__result-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; margin: 24px 0; }
.mk-energy__result-card { padding: 20px; background: #fff; border: 1px solid var(--mk-border); border-radius: 16px; }
.mk-energy__result-card--accent { border-top: 4px solid var(--mk-accent); }
.mk-energy__result-card span, .mk-energy__result-card small { display: block; }
.mk-energy__result-card span { font-weight: 750; }
.mk-energy__result-card strong { display: block; margin: 8px 0; color: var(--mk-eyebrow); font-size: clamp(1.55rem, 4vw, 2.2rem); line-height: 1.15; }
.mk-energy__result-card small { color: var(--mk-muted); line-height: 1.5; }
.mk-energy__result-section { margin-top: 18px; padding: 20px; background: #fff; border: 1px solid var(--mk-border); border-radius: 16px; }
.mk-energy__result-section--next { background: var(--mk-soft); }
.mk-energy__result-section h4 { margin: 0 0 8px; font-size: 1.18rem; }
.mk-energy__result-section p:last-child { margin-bottom: 0; }
.mk-energy__small-note { color: var(--mk-muted); font-size: .92rem; }

.mk-energy__method { margin-top: 24px; }
.mk-energy__method details { background: #fff; border: 1px solid var(--mk-border); border-radius: 14px; }
.mk-energy__method summary { padding: 15px 18px; font-weight: 800; cursor: pointer; }
.mk-energy__method details > div { padding: 0 18px 18px; color: var(--mk-muted); line-height: 1.65; }

@media (max-width: 760px) {
  .mk-energy__grid--3, .mk-energy__choice-grid--2, .mk-energy__check-grid, .mk-energy__result-grid { grid-template-columns: 1fr; }
  .mk-energy__shell { padding: 22px 16px; border-radius: 14px; }
  .mk-energy__actions .mk-energy__button, .mk-energy__result-actions .mk-energy__button { flex: 1 1 100%; }
}

@media print {
  body * { visibility: hidden !important; }
  .mk-energy__result, .mk-energy__result * { visibility: visible !important; }
  .mk-energy__result { position: absolute; inset: 0 auto auto 0; width: 100%; color: #000; }
  .mk-energy__result-actions { display: none !important; }
  .mk-energy__result-card, .mk-energy__result-section { break-inside: avoid; box-shadow: none; }
}
.mk-energy__grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}.mk-energy__module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.mk-energy__module{position:relative;margin:0;cursor:pointer}.mk-energy__module input{position:absolute;opacity:0}.mk-energy__module span{display:block;height:100%;padding:18px;background:#fff;border:1px solid var(--mk-border);border-radius:16px}.mk-energy__module strong,.mk-energy__module small{display:block}.mk-energy__module small{margin-top:6px;color:var(--mk-muted);font-weight:400;line-height:1.5}.mk-energy__module input:checked+span{border-color:var(--mk-accent);box-shadow:0 0 0 2px rgba(230,118,27,.17)}.mk-energy__sum{margin-top:16px;padding:12px 14px;background:#fff;border:1px solid var(--mk-border);border-radius:12px;font-weight:800}@media(max-width:760px){.mk-energy__grid--2,.mk-energy__module-grid{grid-template-columns:1fr}}

/* Version 0.2.1: live validation and button activation */
.mk-energy__step-prompt {
  margin: 20px 0 0;
  padding: 12px 15px;
  border: 1px solid var(--mk-border);
  border-radius: 12px;
  line-height: 1.5;
  font-weight: 700;
}
.mk-energy__step-prompt.is-incomplete {
  color: #7A3A20;
  background: #FFF3E8;
  border-color: #E7C4A5;
}
.mk-energy__step-prompt.is-ready {
  color: #315D3B;
  background: #F0F7F1;
  border-color: #BFD5C3;
}
.mk-energy__button:disabled,
.mk-energy__button[aria-disabled="true"] {
  color: #786F67;
  background: #E8E2DC;
  border-color: #D8CEC4;
  cursor: not-allowed;
  filter: none;
  opacity: 1;
}
.mk-energy__button:disabled:hover { filter: none; }