:root {
  --bg: #0e1013;
  --bg-soft: #15181d;
  --panel: #1b1f26;
  --panel-2: #222731;
  --line: #2c323d;
  --line-soft: #242932;
  --text: #eef1f5;
  --muted: #8d95a3;
  --accent: #e8863a;
  --accent-2: #f5a45c;
  --accent-dim: rgba(232, 134, 58, 0.12);
  --ok: #4ec98a;
  --err: #ef6d6d;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Inter", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image:
    radial-gradient(1100px 500px at 50% -12%, rgba(232, 134, 58, 0.09), transparent 65%),
    linear-gradient(180deg, #0e1013 0%, #101318 100%);
}

/* ---------- Header ---------- */
.site-header {
  padding: 38px 20px 26px;
  text-align: center;
  border-bottom: 1px solid var(--line-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 44px;
  height: 44px;
  flex: none;
  border-radius: 10px;
  background: linear-gradient(145deg, var(--accent), #c9662a);
  display: grid;
  place-items: center;
  box-shadow: 0 6px 18px rgba(232, 134, 58, 0.28);
}

.brand-mark svg { width: 24px; height: 24px; display: block; }

.brand-text {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 3.5px;
  text-transform: uppercase;
  line-height: 1;
}

.brand-text span { color: var(--accent); }

.tagline {
  margin: 14px 0 0;
  font-size: 15px;
  color: var(--muted);
  letter-spacing: 0.4px;
}

/* ---------- Layout ---------- */
.page {
  flex: 1;
  width: 100%;
  max-width: 940px;
  margin: 0 auto;
  padding: 34px 20px 60px;
}

.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-soft) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}

.card + .card { margin-top: 22px; }

.card-title {
  margin: 0 0 22px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- Form ---------- */
.field { margin-bottom: 20px; }

.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.3px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

input[type="text"],
input[type="number"],
input[type="password"],
select {
  width: 100%;
  padding: 13px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
}

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

input::placeholder { color: #5c6472; }

select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8' fill='none' stroke='%238d95a3' stroke-width='1.6'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px;
  padding-right: 38px;
}

select option { background: var(--panel-2); color: var(--text); }

.hint {
  margin-top: 7px;
  font-size: 12px;
  color: #6e7684;
}

/* ---------- Payment picker ---------- */
.pay-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.pay-option input { position: absolute; opacity: 0; pointer-events: none; }

.pay-option span {
  display: block;
  padding: 13px 8px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}

.pay-option span:hover { border-color: #3c434f; color: var(--text); }

.pay-option input:checked + span {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent-2);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.12s, filter 0.15s;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  width: 100%;
  background: linear-gradient(145deg, var(--accent-2), var(--accent));
  color: #1a1206;
  box-shadow: 0 8px 22px rgba(232, 134, 58, 0.25);
}

.btn-primary:hover { filter: brightness(1.07); }

.btn-ghost {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
}

.btn-ghost:hover { border-color: #3c434f; }

.btn-danger { background: rgba(239, 109, 109, 0.14); color: var(--err); border: 1px solid rgba(239, 109, 109, 0.3); }
.btn-danger:hover { background: rgba(239, 109, 109, 0.22); }

.btn-sm { padding: 9px 15px; font-size: 13px; }

/* ---------- Result ---------- */
.result { display: none; }
.result.show { display: block; animation: rise 0.28s ease; }

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.result-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}

.result-door { font-size: 20px; font-weight: 700; }
.result-cat { font-size: 13px; color: var(--muted); }

.total-box {
  margin: 22px 0 6px;
  padding: 24px;
  text-align: center;
  border-radius: 12px;
  background: var(--accent-dim);
  border: 1px solid rgba(232, 134, 58, 0.28);
}

.total-label {
  font-size: 12px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 8px;
}

.total-value {
  font-size: clamp(30px, 7vw, 42px);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
}

.total-sub { margin-top: 8px; font-size: 13px; color: var(--muted); }

.specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.spec {
  padding: 15px;
  background: var(--panel-2);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  text-align: center;
}

.spec-label {
  font-size: 11px;
  letter-spacing: 0.9px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.spec-value { font-size: 17px; font-weight: 600; }

.compare { margin-top: 24px; }

.compare-title {
  font-size: 12px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.compare-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 15px;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  margin-bottom: 8px;
  font-size: 14px;
}

.compare-row.active {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.compare-row .name { color: var(--muted); }
.compare-row.active .name { color: var(--accent-2); font-weight: 600; }
.compare-row .sum { font-weight: 600; font-variant-numeric: tabular-nums; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; margin: 0 -6px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 620px; }

th {
  text-align: left;
  padding: 11px 10px;
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

td { padding: 9px 10px; border-bottom: 1px solid var(--line-soft); vertical-align: middle; }

tr:last-child td { border-bottom: none; }

td input { padding: 9px 11px; font-size: 14px; }
td input[type="number"] { font-variant-numeric: tabular-nums; }

.col-num { width: 42px; color: var(--muted); text-align: center; font-variant-numeric: tabular-nums; }
.col-act { width: 60px; text-align: right; }

.icon-btn {
  border: none;
  background: transparent;
  color: #6e7684;
  cursor: pointer;
  padding: 7px;
  border-radius: 7px;
  line-height: 0;
  transition: all 0.15s;
}

.icon-btn:hover { color: var(--err); background: rgba(239, 109, 109, 0.12); }
.icon-btn svg { width: 16px; height: 16px; }

/* ---------- Alerts ---------- */
.alert {
  padding: 12px 15px;
  border-radius: 9px;
  font-size: 14px;
  margin-bottom: 18px;
}

.alert-err { background: rgba(239, 109, 109, 0.12); border: 1px solid rgba(239, 109, 109, 0.3); color: #ffb4b4; }
.alert-ok { background: rgba(78, 201, 138, 0.12); border: 1px solid rgba(78, 201, 138, 0.3); color: #9ae9c1; }

.hidden { display: none !important; }

/* ---------- Misc ---------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.toolbar-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.auth-card { max-width: 400px; margin: 40px auto; }

.site-footer {
  padding: 22px 20px 34px;
  text-align: center;
  font-size: 13px;
  color: #5c6472;
  border-top: 1px solid var(--line-soft);
}

.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

@media (max-width: 620px) {
  .site-header { padding: 28px 16px 22px; }
  .brand-text { font-size: 22px; letter-spacing: 2.5px; }
  .brand-mark { width: 38px; height: 38px; }
  .card { padding: 20px; }
  .grid-2 { grid-template-columns: 1fr; }
  .pay-options { grid-template-columns: 1fr; }
}