/* Palette matches cloudberry.apache.org brand tokens:
   orange-deep #ff5900, orange #fea315, hover #d94a00, bg-muted #f5f6f8,
   border #e6e8ec, text #18181b, text-muted #4a5160. */
:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --fg: #18181b;
  --fg-soft: #4a5160;
  --accent: #ff5900;
  --accent-text: #d94a00;
  --accent-soft: #fff1e8;
  --orange-soft: rgba(254, 163, 21, .16);
  --neutral-text: #4a5160;
  --neutral-soft: #eef0f3;
  --border: #d0d4dc;
  --border-soft: #e6e8ec;
  --warn: #b45309;
  --shadow: 0 1px 2px rgba(24, 24, 27, .05), 0 8px 24px -12px rgba(24, 24, 27, .16);
  --radius: 14px;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 320px);
  color: var(--fg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.site-header { padding: 30px 24px 22px; }
.header-inner {
  max-width: 960px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: flex-start; gap: 16px;
}
h1 { font-size: 1.55rem; margin: 0; letter-spacing: -.01em; }
.subtitle { margin: 6px 0 0; color: var(--fg-soft); font-size: .92rem; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.nav-link {
  border: 1px solid var(--border); background: var(--card); border-radius: 999px;
  padding: 6px 16px; font-weight: 600; color: var(--fg-soft); text-decoration: none;
  font-size: .9rem; transition: box-shadow .15s, color .15s;
}
.nav-link:hover { box-shadow: var(--shadow); color: var(--accent-text); }
#lang-toggle {
  cursor: pointer; border: 1px solid var(--border); background: var(--card);
  border-radius: 999px; padding: 6px 16px; font-weight: 600; color: var(--accent-text);
  transition: box-shadow .15s;
}
#lang-toggle:hover { box-shadow: var(--shadow); }

main { max-width: 960px; margin: 0 auto; padding: 0 20px 40px; }

.card {
  background: var(--card); border: 1px solid var(--border-soft);
  border-radius: var(--radius); padding: 26px 28px; margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.field-grid { display: grid; grid-template-columns: minmax(220px, 320px) 1fr; gap: 24px; }
label { display: block; margin: 0 0 8px; font-weight: 600; font-size: .92rem; }
.row { display: flex; gap: 8px; }

input, select, button { font: inherit; color: inherit; }
input[type=number], select {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 9px;
  background: #fbfcfe; width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
input[type=number]:focus, select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
.row select { width: auto; }

.tabs { display: flex; gap: 0; background: #eceff6; border-radius: 10px; padding: 4px; width: fit-content; flex-wrap: wrap; }
.tabs button {
  cursor: pointer; border: 0; background: transparent; border-radius: 8px;
  padding: 8px 18px; font-weight: 600; color: var(--fg-soft);
  transition: background .15s, color .15s;
}
.tabs button.active { background: var(--card); color: var(--accent-text); box-shadow: 0 1px 3px rgba(24,24,27,.12); }

.adv { margin-top: 20px; }
.preset-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; }
.preset-card {
  cursor: pointer; text-align: left; display: flex; flex-direction: column; gap: 4px;
  border: 1.5px solid var(--border); border-radius: 12px; padding: 14px 16px; background: #fbfcfe;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.preset-card:hover { border-color: var(--accent); }
.preset-card.selected { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 0 0 3px var(--accent-soft); }
.preset-name { font-weight: 700; font-size: .98rem; }
.preset-desc { color: var(--fg-soft); font-size: .84rem; }

.hint { color: var(--fg-soft); font-size: .85rem; margin: 8px 0 0; }
.check-row { display: flex; align-items: center; gap: 8px; margin-top: 16px; font-weight: 600; font-size: .92rem; }
.check-row input { width: 16px; height: 16px; accent-color: var(--accent); }
#advanced summary { cursor: pointer; font-weight: 600; font-size: .92rem; color: var(--fg-soft); }
.adv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 260px)); gap: 12px; margin-top: 12px; }
.adv-grid label span { display: block; margin-bottom: 6px; }

.result-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 4px; }
h2 { font-size: 1.15rem; margin: 18px 0 10px; }
.result-head h2 { margin: 0; }
.product-chip {
  background: var(--accent-soft); color: var(--accent-text); border-radius: 999px;
  padding: 4px 14px; font-size: .82rem; font-weight: 600;
}
.badge {
  display: inline-block; padding: 5px 14px; border-radius: 999px; font-size: .85rem;
  font-weight: 600; margin: 6px 0;
}
.badge-storage { background: var(--neutral-soft); color: var(--neutral-text); }
.badge-compute { background: var(--orange-soft); color: var(--accent-text); }
.warn { color: var(--warn); font-weight: 600; margin: 10px 0 0; }
.callout {
  display: flex; align-items: center; gap: 10px;
  background: var(--orange-soft); border: 1px solid rgba(255, 89, 0, .25);
  border-radius: 10px; padding: 10px 14px; margin: 12px 0 4px;
  color: var(--accent-text); font-weight: 600; font-size: .9rem;
}
.callout::before { content: "⚠"; font-size: 1.05rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin: 8px 0 10px; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--border-soft); vertical-align: top; font-size: .92rem; }
thead th {
  font-size: .76rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--fg-soft); border-bottom: 1px solid var(--border);
}
tbody tr:hover { background: #f8fafd; }
td.num { font-variant-numeric: tabular-nums; font-weight: 700; }
td.note { color: var(--fg-soft); font-size: .85rem; max-width: 260px; }

.spec-inst { display: block; font-weight: 700; color: var(--accent-text); }
.spec-main { display: block; font-weight: 600; }
.bom-line { display: flex; gap: 8px; font-size: .82rem; color: var(--fg-soft); margin-top: 3px; }
.bom-k { flex: 0 0 5.5em; color: #8b94ab; }
.bom-v { flex: 1; }

.summary th { width: 40%; color: var(--fg-soft); font-weight: 600; }
.summary td { font-weight: 700; font-variant-numeric: tabular-nums; }
.meta-line { color: var(--fg-soft); font-size: .85rem; margin: 8px 0 0; }

footer { text-align: center; padding: 10px 16px 30px; font-size: .84rem; }
footer p { color: #93a0bb; }

@media (max-width: 680px) {
  .field-grid { grid-template-columns: 1fr; }
  .card { padding: 20px 18px; }
  .tabs { width: 100%; }
  .tabs button { flex: 1; padding: 8px 8px; }
}