/* ── Calculator page ──────────────────────────────── */
.calc-pg { padding: 72px 0; }

/* ── Step tracker ─────────────────────────────────── */
.step-trk { display: flex; align-items: flex-start; max-width: 640px; margin-bottom: 44px; }
.step-col { display: flex; flex-direction: column; align-items: center; }
.step-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-faint);
  background: var(--surface);
  transition: all var(--duration-base) var(--ease);
  flex-shrink: 0;
}
.step-dot.active { border-color: var(--blue); color: var(--blue); }
.step-dot.done   { border-color: var(--blue); background: var(--blue); color: white; }
.step-nm { font-family: var(--font-mono); font-size: 0.67rem; color: var(--text-faint); font-weight: 500; margin-top: 7px; text-align: center; letter-spacing: 0.05em; text-transform: uppercase; }
.step-lw { flex: 1; padding: 15px 0 0; }
.step-ln { height: 2px; background: var(--border-dark); transition: background var(--duration-base) var(--ease); }
.step-ln.done { background: var(--blue); }

/* ── Step content ─────────────────────────────────── */
.sc { display: none; }
.sc.active { display: block; }

/* ── Step description note ────────────────────────── */
.step-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
}

/* ── Welcome screen ───────────────────────────────── */
.welcome-steps { display: flex; flex-direction: column; gap: 22px; margin: 8px 0 32px; }
.ws-row { display: flex; align-items: flex-start; gap: 16px; }
.ws-num {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--blue); color: white;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 600;
  flex-shrink: 0; margin-top: 1px;
}
.ws-row strong { display: block; font-size: 0.88rem; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.ws-row p { font-size: 0.81rem; color: var(--text-muted); margin: 0; line-height: 1.55; }

/* ── Location step ────────────────────────────────── */
.loc-row { display: flex; gap: 10px; }
.loc-row .fi { flex: 1; min-width: 0; }
.loc-row .ebtn { white-space: nowrap; flex-shrink: 0; }
.loc-confirm {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: #f0fdf4;
  border: 1.5px solid #86efac;
  border-radius: var(--radius-md);
  font-size: 0.87rem;
  font-weight: 600;
  color: #166534;
  margin-bottom: 4px;
}

/* ── Usage step ───────────────────────────────────── */
.kwh-row { display: flex; align-items: center; gap: 12px; }
.kwh-row .fi { max-width: 220px; }
.kwh-unit { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; }
.f-hint { font-size: 0.78rem; color: var(--text-muted); margin-top: 9px; line-height: 1.55; }

/* ── Backup options ───────────────────────────────── */
.backup-opts { display: flex; flex-direction: column; gap: 10px; margin-bottom: 4px; }
.backup-opt {
  width: 100%;
  text-align: left;
  padding: 15px 18px;
  border: 1.5px solid var(--border-dark);
  border-radius: var(--radius-md);
  cursor: pointer;
  background: var(--surface);
  transition: all var(--duration-fast) var(--ease);
  color: var(--text-dark);
}
.bo-header { display: flex; align-items: center; gap: 8px; margin-bottom: 3px; }
.backup-opt strong { font-size: 0.88rem; font-weight: 600; color: var(--ink); }
.bo-desc { display: block; font-size: 0.78rem; color: var(--text-muted); line-height: 1.45; }
.backup-opt:hover { border-color: var(--blue); background: var(--blue-tint); }
.backup-opt.sel { border-color: var(--blue); background: var(--blue-tint); box-shadow: inset 0 0 0 1px var(--blue); }
.backup-opt.sel strong { color: var(--blue); }
.backup-opt.sel .bo-desc { color: var(--blue); opacity: 0.8; }
/* Badge — sits in .bo-header flex row, never full-width, color never inherits from strong */
.rec-tag {
  flex-shrink: 0;
  font-size: 0.62rem;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--blue);
  color: #fff;
  border-radius: var(--radius-full);
  padding: 2px 8px;
  line-height: 1.4;
}
/* Custom duration input */
.custom-hrs-wrap { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.custom-hr-row { display: flex; gap: 10px; }
.custom-hr-row .fi:first-child { flex: 1; max-width: 160px; }
.custom-hr-row select.fi { width: 120px; flex-shrink: 0; }

/* ── Results ──────────────────────────────────────── */
.res-wrap { max-width: 960px; }
.res-hd { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 16px; margin-bottom: 28px; }
.res-hd h3 { font-size: 1rem; font-weight: 700; }
.res-note { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; line-height: 1.5; }
.res-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 28px; }
.res-cta { margin-top: 24px; text-align: center; }
.btn-grp { display: flex; gap: 10px; flex-wrap: wrap; }

/* ── Product breakdown ────────────────────────────── */
.breakdown-wrap {
  margin-bottom: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.breakdown-hd {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 14px 18px 12px;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
  margin: 0;
}
.bkd-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
}
.bkd-row:last-child { border-bottom: none; }
.bkd-name { flex: 1; min-width: 0; }
.bkd-name strong { display: block; font-size: 0.85rem; font-weight: 600; color: var(--ink); }
.bkd-spec {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-top: 2px;
}
.bkd-price {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  flex-shrink: 0;
}
.bkd-unit { font-size: 0.72rem; color: var(--text-muted); font-family: var(--font-mono); }
.bkd-total { font-size: 0.88rem; font-weight: 600; color: var(--ink); font-family: var(--font-mono); }
.bkd-sum { background: var(--surface-raised); }
.bkd-sum strong { font-size: 0.88rem; }
.bkd-sum .bkd-total { font-size: 1rem; color: var(--blue); }
.breakdown-note {
  font-size: 0.72rem;
  color: var(--text-faint);
  padding: 9px 18px;
  margin: 0;
  background: var(--surface-raised);
  border-top: 1px solid var(--border);
  font-style: italic;
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 920px) {
  .step-trk { max-width: 100%; }
  .res-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .kwh-row { flex-wrap: wrap; }
  .kwh-row .fi { max-width: 100%; width: 100%; }
}
@media (max-width: 480px) {
  .res-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .loc-row { flex-direction: column; }
}