:root {
  --bg: #0b1220;
  --bg-2: #0f1a2b;
  --card: #16202e;
  --border: #24334a;
  --text: #e6edf6;
  --muted: #93a4bd;
  --accent: #38bdf8;
  --warm: #fb923c;
  --cool: #38bdf8;
  --danger-bg: #4a1d12;
  --danger-border: #b45309;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 600px at 50% -10%, var(--bg-2), var(--bg));
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(9, 15, 26, 0.6);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.wheel { color: var(--accent); flex: none; }
.brand { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 1.35rem; font-weight: 700; letter-spacing: 0.02em; }
.brand-sub { font-size: 0.72rem; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; }

main { max-width: 560px; margin: 0 auto; padding: 1.25rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem 1.15rem 1.3rem;
  margin-bottom: 1.1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.step { display: flex; align-items: center; gap: 0.55rem; margin: 0 0 0.9rem; font-size: 1.05rem; }
.step .num {
  display: grid; place-items: center;
  width: 1.6rem; height: 1.6rem; border-radius: 50%;
  background: var(--accent); color: #06263a; font-size: 0.9rem; font-weight: 700; flex: none;
}

label { display: block; margin: 0.55rem 0; font-size: 0.9rem; color: var(--muted); }
input, select {
  width: 100%; margin-top: 0.3rem; padding: 0.7rem 0.75rem;
  font-size: 1rem; color: var(--text);
  background: #0e1826; border: 1px solid var(--border); border-radius: 9px;
}
input:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18); }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.35rem 0.9rem; }
@media (max-width: 420px) { .grid { grid-template-columns: 1fr; } }

button.primary {
  width: 100%; margin-top: 1.1rem; padding: 0.85rem;
  font-size: 1rem; font-weight: 650; cursor: pointer;
  color: #04263a; background: linear-gradient(180deg, #5cc9fb, var(--accent));
  border: none; border-radius: 10px;
}
button.primary:hover { filter: brightness(1.06); }
button.primary:active { transform: translateY(1px); }

.note {
  background: var(--danger-bg); border: 1px solid var(--danger-border);
  color: #fed7aa; padding: 0.65rem 0.75rem; border-radius: 9px; font-size: 0.88rem; margin: 0 0 0.6rem;
}

.loads { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }
@media (max-width: 420px) { .loads { grid-template-columns: 1fr; } }
.load-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 1.1rem; display: flex; flex-direction: column; gap: 0.25rem;
  border-top: 3px solid var(--border);
}
.load-card.heating { border-top-color: var(--warm); }
.load-card.cooling { border-top-color: var(--cool); }
.load-label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.load-tons { font-size: 1.05rem; color: var(--text); }
.load-card.heating .load-tons strong { color: var(--warm); font-size: 2rem; }
.load-card.cooling .load-tons strong { color: var(--cool); font-size: 2rem; }
.load-btu { font-size: 0.85rem; color: var(--muted); }

.disclaimer { margin: 1rem 0 0; font-size: 0.78rem; color: var(--muted); font-style: italic; }

.review-box { background: #0e1826; border: 1px solid var(--border); border-radius: 10px; padding: 0.9rem 1rem; margin-bottom: 1rem; }
.review-addr { font-size: 1.05rem; font-weight: 600; color: var(--text); }
.review-found { margin-top: 0.35rem; font-size: 0.9rem; color: var(--muted); }
.review-found strong { color: #38bdf8; }
.check { display: flex; gap: 0.6rem; align-items: flex-start; margin: 0.7rem 0; font-size: 0.92rem; color: var(--text); cursor: pointer; }
.check input { width: 1.15rem; height: 1.15rem; margin-top: 0.1rem; flex: none; accent-color: #38bdf8; cursor: pointer; }
.linkbtn { display: inline-block; width: auto; margin-top: 0.7rem; padding: 0.3rem 0; background: none; border: none; color: var(--muted); font-size: 0.85rem; cursor: pointer; }
.linkbtn:hover { color: #38bdf8; }
button.primary:disabled { opacity: 0.45; cursor: not-allowed; filter: none; }

.services { display: flex; flex-direction: column; gap: 0.5rem; }
.svc-opt { display: flex; align-items: center; gap: 0.7rem; border: 1px solid var(--border); border-radius: 10px; padding: 0.7rem 0.9rem; cursor: pointer; }
.svc-opt:hover { border-color: #38bdf8; }
.svc-opt.sel { border-color: #38bdf8; background: rgba(56, 189, 248, 0.08); }
.svc-opt input { width: 1.1rem; height: 1.1rem; flex: none; accent-color: #38bdf8; cursor: pointer; }
.svc-opt .svc-label { flex: 1; font-size: 0.92rem; }
.svc-opt .svc-price { font-weight: 700; color: #38bdf8; }
.review-svc { margin-top: 0.6rem; padding-top: 0.6rem; border-top: 1px solid var(--border); font-weight: 600; color: var(--text); }

.muted { color: var(--muted); font-size: 0.9rem; margin: 0 0 0.6rem; }
.operator { opacity: 0.92; }
button.secondary {
  width: 100%; margin-top: 0.4rem; padding: 0.75rem;
  font-size: 0.95rem; font-weight: 600; cursor: pointer;
  color: var(--text); background: transparent;
  border: 1px solid var(--accent); border-radius: 10px;
}
button.secondary:hover { background: rgba(56, 189, 248, 0.12); }