:root {
  --bg: #0f1117;
  --bg-elev: #171a22;
  --bg-elev2: #1e222c;
  --border: #2a2f3a;
  --text: #e8eaf0;
  --muted: #9aa3b2;
  --primary: #4f8cff;
  --primary-strong: #2f6fe0;
  --accent: #38d39f;
  --warn: #ffb020;
  --danger: #ff5c6c;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
  --maxw: 1180px;
}
:root[data-theme='light'] {
  --bg: #f4f6fb;
  --bg-elev: #ffffff;
  --bg-elev2: #eef1f7;
  --border: #dde2ec;
  --text: #1c2230;
  --muted: #5a6473;
  --shadow: 0 6px 24px rgba(20, 30, 60, 0.1);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; } /* .modal 等の display 指定が hidden を上書きするのを防ぐ */
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
h1, h2, h3 { margin: 0; line-height: 1.25; }
button { font-family: inherit; cursor: pointer; }
a { color: var(--primary); }
.muted { color: var(--muted); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { font-size: 30px; }
.brand h1 { font-size: 21px; letter-spacing: .02em; }
.tagline { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }
.header-meta { display: flex; align-items: center; gap: 10px; }
.badge {
  font-size: 12px; padding: 5px 11px; border-radius: 999px;
  background: var(--bg-elev2); border: 1px solid var(--border); color: var(--muted);
  white-space: nowrap;
}
.icon-btn {
  background: var(--bg-elev2); border: 1px solid var(--border); color: var(--text);
  width: 38px; height: 38px; border-radius: 10px; font-size: 16px;
}
.icon-btn:hover { border-color: var(--primary); }

/* ---------- Layout ---------- */
.layout { display: grid; grid-template-columns: 300px 1fr; gap: 22px; padding-top: 24px; padding-bottom: 60px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }

.panel {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px;
}
.filters { position: sticky; top: 88px; }
@media (max-width: 900px) { .filters { position: static; } }
.panel-title { font-size: 15px; margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }

.field { margin-bottom: 16px; }
.field > label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 7px; font-weight: 600; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

input[type="number"], select {
  width: 100%; background: var(--bg-elev2); border: 1px solid var(--border);
  color: var(--text); border-radius: 9px; padding: 8px 10px; font-size: 14px;
}
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: right 14px center, right 9px center; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 26px; }
input:focus, select:focus { outline: none; border-color: var(--primary); }

.budget-row { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; align-items: center; }
.budget-row input[type="range"] { grid-column: 1 / -1; width: 100%; accent-color: var(--primary); }
.budget-row input[type="number"] { width: 110px; }
.budget-row .unit { color: var(--muted); font-size: 13px; }

.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.segmented button {
  background: var(--bg-elev2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 9px 6px; font-size: 13px; transition: .15s;
}
.segmented button:hover { border-color: var(--primary); }
.segmented button.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }

.toggles { display: flex; flex-direction: column; gap: 9px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text); cursor: pointer; }
.check input { accent-color: var(--primary); width: 16px; height: 16px; }

.maker-list { display: flex; flex-direction: column; gap: 8px; }

/* 詳細スペック（型番指定） */
.detail-spec { margin-bottom: 16px; border: 1px solid var(--border); border-radius: 10px; padding: 0 12px; background: var(--bg-elev2); }
.detail-spec > summary { cursor: pointer; padding: 11px 2px; font-size: 12.5px; font-weight: 600; color: var(--text); list-style: none; display: flex; align-items: center; gap: 6px; }
.detail-spec > summary::-webkit-details-marker { display: none; }
.detail-spec > summary::before { content: '▸'; color: var(--muted); transition: transform .15s; }
.detail-spec[open] > summary::before { transform: rotate(90deg); }
.detail-spec[open] { padding-bottom: 4px; }
.detail-spec .field { margin-bottom: 12px; }

/* マルチセレクト */
.ms { position: relative; }
.ms-toggle { width: 100%; text-align: left; background: var(--bg-elev); border: 1px solid var(--border); color: var(--muted); border-radius: 9px; padding: 8px 28px 8px 10px; font-size: 13px; position: relative; }
.ms-toggle::after { content: '▾'; position: absolute; right: 11px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.ms-toggle:hover { border-color: var(--primary); }
.ms-toggle.active { color: var(--text); border-color: var(--accent); font-weight: 600; }
.ms-panel { position: absolute; z-index: 15; top: calc(100% + 4px); left: 0; right: 0; background: var(--bg-elev); border: 1px solid var(--primary); border-radius: 10px; box-shadow: var(--shadow); padding: 8px; }
.ms-search { width: 100%; margin-bottom: 8px; background: var(--bg-elev2); border: 1px solid var(--border); color: var(--text); border-radius: 7px; padding: 7px 9px; font-size: 13px; }
.ms-search:focus { outline: none; border-color: var(--primary); }
.ms-list { max-height: 240px; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
.ms-item { display: flex; align-items: center; gap: 8px; padding: 6px 7px; border-radius: 7px; font-size: 13px; cursor: pointer; }
.ms-item:hover { background: var(--bg-elev2); }
.ms-item input { accent-color: var(--accent); width: 15px; height: 15px; flex: none; }
.ms-item .ms-label { flex: 1; }
.ms-item .ms-count { color: var(--muted); font-size: 11px; background: var(--bg-elev2); padding: 1px 7px; border-radius: 999px; }
.ms-empty { padding: 14px; text-align: center; color: var(--muted); font-size: 12.5px; }

.ghost-btn { width: 100%; background: transparent; border: 1px solid var(--border); color: var(--muted); border-radius: 9px; padding: 9px; font-size: 13px; }
.ghost-btn:hover { border-color: var(--primary); color: var(--text); }
.ghost-btn.small { width: auto; padding: 7px 12px; }
.primary-btn { background: var(--primary); color: #fff; border: none; border-radius: 9px; padding: 9px 16px; font-size: 14px; font-weight: 600; }
.primary-btn:disabled { opacity: .45; cursor: not-allowed; }
.primary-btn:not(:disabled):hover { background: var(--primary-strong); }

/* ---------- Results ---------- */
.results-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.results-head h2 { font-size: 18px; }

.top-pick {
  border: 1px solid var(--primary); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 20px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 16%, var(--bg-elev)), var(--bg-elev));
  box-shadow: var(--shadow);
}
.top-pick .tp-label { font-size: 12px; font-weight: 700; color: var(--primary); letter-spacing: .08em; }
.top-pick .tp-main { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 6px; }
.top-pick .tp-name { font-size: 20px; font-weight: 700; }
.top-pick .tp-price { font-size: 24px; font-weight: 800; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }

.card {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: flex; flex-direction: column; gap: 12px; transition: .15s; position: relative;
}
.card:hover { border-color: color-mix(in srgb, var(--primary) 55%, var(--border)); transform: translateY(-2px); }
.card.is-top { border-color: var(--primary); }

.card-top { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.maker-tag { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; font-weight: 700; padding: 3px 9px; border-radius: 999px; color: #fff; }
.card-name { font-size: 16px; font-weight: 700; margin-top: 8px; }
.card-series { font-size: 12px; color: var(--muted); }

.score-ring { width: 54px; height: 54px; flex: none; position: relative; }
.score-ring svg { transform: rotate(-90deg); }
.score-ring .score-val { position: absolute; inset: 0; display: grid; place-items: center; font-weight: 800; font-size: 15px; }
.score-ring .score-unit { font-size: 9px; color: var(--muted); }

.price-row { display: flex; align-items: baseline; gap: 8px; }
.price { font-size: 22px; font-weight: 800; }
.cat-chip { font-size: 11px; padding: 2px 8px; border-radius: 6px; background: var(--bg-elev2); border: 1px solid var(--border); color: var(--muted); }
.cat-chip.src-live { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }

.specs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; font-size: 12.5px; }
.spec { display: flex; gap: 6px; }
.spec .k { color: var(--muted); min-width: 42px; }
.spec .v { color: var(--text); font-weight: 500; }

.reasons { display: flex; flex-wrap: wrap; gap: 6px; }
.reason { font-size: 11.5px; padding: 3px 9px; border-radius: 999px; background: color-mix(in srgb, var(--accent) 15%, transparent); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); }

.bars { display: flex; flex-direction: column; gap: 5px; }
.bar-row { display: grid; grid-template-columns: 66px 1fr 28px; align-items: center; gap: 8px; font-size: 11px; color: var(--muted); }
.bar { height: 6px; border-radius: 999px; background: var(--bg-elev2); overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--primary), var(--accent)); }

.card-actions { display: flex; gap: 8px; margin-top: auto; }
.card-actions a { flex: 1; text-align: center; text-decoration: none; background: var(--primary); color: #fff; border-radius: 9px; padding: 8px; font-size: 13px; font-weight: 600; }
.card-actions a:hover { background: var(--primary-strong); }
.compare-btn { background: transparent; border: 1px solid var(--border); color: var(--muted); border-radius: 9px; padding: 8px 12px; font-size: 12.5px; }
.compare-btn.added { border-color: var(--accent); color: var(--accent); }

.empty { text-align: center; padding: 60px 20px; }

/* ---------- Compare tray & modal ---------- */
.compare-tray {
  position: sticky; bottom: 0; z-index: 25; border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(10px);
}
.tray-inner { display: flex; align-items: center; gap: 12px; padding: 12px 20px; flex-wrap: wrap; }
.tray-items { display: flex; gap: 8px; flex: 1; flex-wrap: wrap; }
.tray-chip { font-size: 12px; padding: 4px 10px; border-radius: 999px; background: var(--bg-elev2); border: 1px solid var(--border); }

.modal { position: fixed; inset: 0; z-index: 40; background: rgba(0,0,0,.6); display: grid; place-items: center; padding: 20px; }
.modal-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); max-width: 900px; width: 100%; max-height: 85vh; overflow: auto; box-shadow: var(--shadow); }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--bg-elev); }
.modal-body { padding: 12px 20px 24px; }
#compareTable { width: 100%; border-collapse: collapse; font-size: 13px; }
#compareTable th, #compareTable td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
#compareTable th { color: var(--muted); font-weight: 600; white-space: nowrap; }
#compareTable td.best { color: var(--accent); font-weight: 700; }

.site-footer { border-top: 1px solid var(--border); padding: 24px 0 40px; font-size: 13px; color: var(--muted); }
.site-footer b { color: var(--text); }