:root {
  --bg: #0b1220;
  --panel: #ffffff;
  --ink: #0f172a;
  --ink-soft: #475569;
  --ink-faint: #94a3b8;
  --line: #e7ecf3;
  --brand: #0f9d6e;
  --brand-deep: #0a7a55;
  --brand-soft: #e6f7f0;
  --accent: #2563eb;
  --loss: #e11d48;
  --profit: #2563eb;
  --shadow: 0 1px 2px rgba(15,23,42,.04), 0 12px 32px rgba(15,23,42,.06);
  --shadow-lg: 0 24px 60px rgba(8,30,22,.12);
  --radius: 18px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: "Noto Sans JP", "Inter", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 80% -10%, #103b2e 0%, transparent 55%),
    radial-gradient(900px 500px at -10% 0%, #0d2940 0%, transparent 50%),
    var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
header.hero { padding: 44px 0 36px; color: #fff; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; letter-spacing: .14em; font-weight: 700;
  color: #8ff0c8; background: rgba(15,157,110,.16);
  border: 1px solid rgba(143,240,200,.25);
  padding: 6px 14px; border-radius: 999px; text-transform: uppercase;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: #34e3a3; box-shadow: 0 0 0 4px rgba(52,227,163,.2); }
header.hero h1 {
  font-size: clamp(28px, 5vw, 46px); font-weight: 900; line-height: 1.18;
  margin: 18px 0 12px; letter-spacing: -0.01em;
}
header.hero h1 .hl { color: #34e3a3; }
header.hero p.lead { color: #c7d4e5; font-size: clamp(14px,2.2vw,16.5px); max-width: 640px; }

/* ---------- ページ切替ナビ ---------- */
.nav { display: inline-flex; gap: 6px; padding: 5px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: 999px; margin-bottom: 18px; }
.nav a {
  text-decoration: none; color: #c7d4e5; font-size: 13.5px; font-weight: 700;
  padding: 8px 18px; border-radius: 999px; transition: background .15s, color .15s; white-space: nowrap;
}
.nav a:hover { color: #fff; }
.nav a.active { background: #fff; color: var(--brand-deep); box-shadow: 0 2px 8px rgba(0,0,0,.12); }

/* ---------- 結果ヘッダー（トグル＋保存ボタン） ---------- */
.results-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.results-bar .toggle { margin-bottom: 0; }
.save-btn {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  border: 1px solid rgba(255,255,255,.22); background: rgba(255,255,255,.10); color: #fff;
  font-family: inherit; font-weight: 700; font-size: 13px; padding: 11px 18px; border-radius: 999px;
  transition: background .15s, border-color .15s, color .15s;
}
.save-btn:hover { background: rgba(255,255,255,.18); }
.save-btn.copied { background: #fff; color: var(--brand-deep); border-color: #fff; }

/* ---------- 結果ビュー切替トグル ---------- */
.toggle { display: inline-flex; gap: 4px; padding: 4px; background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.16); border-radius: 13px; margin-bottom: 22px; }
.toggle-btn { border: 0; cursor: pointer; font-family: inherit; font-weight: 700; font-size: 13.5px; color: #c7d4e5; background: transparent; padding: 10px 22px; border-radius: 9px; transition: background .15s, color .15s, box-shadow .15s; }
.toggle-btn:hover { color: #fff; }
.toggle-btn.active { background: #fff; color: var(--brand-deep); box-shadow: 0 2px 8px rgba(0,0,0,.14); }
.view { display: none; }
.view.active { display: block; }

/* ---------- Main layout ---------- */
main { padding-bottom: 70px; }
.grid {
  display: grid; grid-template-columns: 380px 1fr; gap: 22px; align-items: start;
}
@media (max-width: 940px){ .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--panel); border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid rgba(255,255,255,.6);
}
.card-pad { padding: 24px; }
.card h2 {
  font-size: 15px; font-weight: 800; color: var(--ink);
  display: flex; align-items: center; gap: 9px; margin-bottom: 4px;
}
.card h2 .ic { width: 26px; height: 26px; border-radius: 8px; background: var(--brand-soft); color: var(--brand-deep); display: grid; place-items: center; flex: none; }
.card .sub { color: var(--ink-faint); font-size: 12.5px; margin-bottom: 18px; }

/* ---------- Inputs ---------- */
.field { margin-bottom: 18px; }
.field:last-child { margin-bottom: 0; }
.field label { display: block; font-size: 13px; font-weight: 700; color: var(--ink-soft); margin-bottom: 7px; }
.field .hint { font-weight: 400; color: var(--ink-faint); font-size: 11.5px; }
.input-shell {
  display: flex; align-items: center; gap: 8px;
  border: 1.5px solid var(--line); border-radius: 12px;
  padding: 0 14px; background: #fbfdff; transition: border-color .15s, box-shadow .15s, background .15s;
}
.input-shell:focus-within { border-color: var(--brand); background: #fff; box-shadow: 0 0 0 4px var(--brand-soft); }
.input-shell .pre { color: var(--ink-faint); font-weight: 700; font-size: 15px; }
.input-shell .post { color: var(--ink-faint); font-weight: 600; font-size: 13px; white-space: nowrap; }
.input-shell input {
  border: 0; outline: 0; background: transparent; width: 100%;
  font-family: "Inter","Noto Sans JP",sans-serif; font-size: 19px; font-weight: 700; color: var(--ink);
  padding: 13px 0; text-align: right; letter-spacing: .01em;
}
.input-shell input::-webkit-outer-spin-button,
.input-shell input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.input-shell input[type=number]{ -moz-appearance: textfield; }

/* ---------- 項目別リスト（固定費・変動費） ---------- */
.item-list { display: flex; flex-direction: column; gap: 8px; }
.item-row { display: flex; align-items: center; gap: 7px; }
.item-row .item-name {
  flex: 1 1 auto; min-width: 0;
  border: 1.5px solid var(--line); border-radius: 10px; padding: 10px 11px;
  font-family: inherit; font-size: 13.5px; font-weight: 600; color: var(--ink); background: #fbfdff;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.item-row .item-name::placeholder { color: var(--ink-faint); font-weight: 400; }
.item-row .item-name:focus { outline: 0; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); background: #fff; }
.item-row .amt-shell {
  flex: 0 0 auto; width: 122px; display: flex; align-items: center; gap: 3px;
  border: 1.5px solid var(--line); border-radius: 10px; padding: 0 10px; background: #fbfdff;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.item-row .amt-shell:focus-within { border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); background: #fff; }
.item-row .amt-shell .pre { color: var(--ink-faint); font-weight: 700; font-size: 13px; }
.item-row .amt-shell input {
  border: 0; outline: 0; background: transparent; width: 100%; text-align: right;
  font-family: "Inter","Noto Sans JP",sans-serif; font-size: 15px; font-weight: 700; color: var(--ink); padding: 9px 0;
}
.item-row .amt-shell input::-webkit-outer-spin-button,
.item-row .amt-shell input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.item-row .amt-shell input[type=number]{ -moz-appearance: textfield; }
.item-row .item-del {
  flex: 0 0 auto; width: 30px; height: 30px; border: 0; border-radius: 8px;
  background: #f1f5f9; color: #94a3b8; font-size: 17px; line-height: 1; cursor: pointer;
  display: grid; place-items: center; transition: background .14s, color .14s; font-family: inherit;
}
.item-row .item-del:hover { background: #fee2e2; color: var(--loss); }
.add-item {
  width: 100%; margin-top: 9px; border: 1.5px dashed var(--line); background: #fff;
  color: var(--brand-deep); font-weight: 700; font-size: 12.5px; padding: 10px; border-radius: 10px;
  cursor: pointer; font-family: inherit; transition: all .14s;
}
.add-item:hover { border-color: var(--brand); background: var(--brand-soft); }
.sum-line {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-top: 13px; padding-top: 12px; border-top: 1px dashed var(--line);
}
.sum-line .sum-label { font-size: 12.5px; font-weight: 700; color: var(--ink-soft); }
.sum-line .sum-val { font-family: "Inter","Noto Sans JP",sans-serif; font-size: 19px; font-weight: 800; color: var(--ink); }
.sum-line .sum-val .u { font-size: .62em; color: var(--ink-faint); font-weight: 700; }

/* ---------- 月別入力グリッド（年間ページ） ---------- */
.month-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
@media (max-width: 520px){ .month-grid { grid-template-columns: 1fr; } }
.month-row { display: flex; align-items: center; gap: 8px; }
.month-row .m-label { flex: 0 0 36px; font-size: 12.5px; font-weight: 700; color: var(--ink-soft); }
.month-row .m-shell {
  flex: 1 1 auto; min-width: 0; display: flex; align-items: center; gap: 4px;
  border: 1.5px solid var(--line); border-radius: 10px; padding: 0 10px; background: #fbfdff;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.month-row .m-shell:focus-within { border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); background: #fff; }
.month-row .m-shell input {
  border: 0; outline: 0; background: transparent; width: 100%; text-align: right;
  font-family: "Inter","Noto Sans JP",sans-serif; font-size: 15px; font-weight: 700; color: var(--ink); padding: 9px 0;
}
.month-row .m-shell input::-webkit-outer-spin-button,
.month-row .m-shell input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.month-row .m-shell input[type=number]{ -moz-appearance: textfield; }
.month-row .m-shell .post { color: var(--ink-faint); font-weight: 600; font-size: 12px; }

/* 一括設定 */
.bulk-row { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.bulk-row .input-shell { flex: 1 1 130px; }
.bulk-row .input-shell input { font-size: 16px; padding: 10px 0; }
.btn-mini {
  border: 0; cursor: pointer; border-radius: 10px; padding: 11px 16px; background: var(--brand); color: #fff;
  font-family: inherit; font-weight: 700; font-size: 13px; white-space: nowrap; transition: filter .15s;
}
.btn-mini:hover { filter: brightness(1.05); }

.btn-row { display: flex; gap: 10px; margin-top: 22px; }
.btn {
  flex: 1; border: 0; cursor: pointer; border-radius: 11px; padding: 12px;
  font-family: inherit; font-weight: 700; font-size: 13.5px; transition: transform .08s, filter .15s, background .15s;
}
.btn:active { transform: translateY(1px); }
.btn.ghost { background: #f1f5f9; color: var(--ink-soft); }
.btn.ghost:hover { background: #e7edf4; }

/* presets */
.presets { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 4px; }
.preset {
  border: 1px solid var(--line); background: #fff; color: var(--ink-soft);
  font-size: 11.5px; font-weight: 600; padding: 6px 11px; border-radius: 999px; cursor: pointer;
  transition: all .14s; font-family: inherit;
}
.preset:hover { border-color: var(--brand); color: var(--brand-deep); background: var(--brand-soft); }

/* ---------- KPI cards ---------- */
.kpis { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; margin-bottom: 22px; }
@media (max-width: 520px){ .kpis { grid-template-columns: 1fr; } }
.kpi {
  position: relative; overflow: hidden; padding: 20px;
  border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.6);
}
.kpi.hero-kpi {
  grid-column: 1 / -1; color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-deep) 70%, #075c40 100%);
  box-shadow: var(--shadow-lg);
}
.kpi.hero-kpi.is-loss { background: linear-gradient(135deg, #f43f5e 0%, #be123c 70%, #9f1239 100%); }
.kpi .k-label { font-size: 12.5px; font-weight: 700; color: var(--ink-faint); margin-bottom: 6px; }
.kpi.hero-kpi .k-label { color: rgba(255,255,255,.82); }
.kpi .k-value { font-family:"Inter","Noto Sans JP",sans-serif; font-weight: 800; line-height: 1.05; letter-spacing: -0.01em; }
.kpi .k-value { font-size: 26px; color: var(--ink); }
.kpi.hero-kpi .k-value { font-size: clamp(30px,5vw,42px); }
.kpi .k-value .unit { font-size: .5em; font-weight: 700; margin-left: 3px; opacity: .85; }
.kpi .k-note { font-size: 12px; color: var(--ink-faint); margin-top: 6px; }
.kpi.hero-kpi .k-note { color: rgba(255,255,255,.9); }
.kpi.hero-kpi .badge {
  display:inline-block; margin-top: 10px; background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.3); padding: 5px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 700;
}
.kpi.hero-kpi::after{
  content:""; position:absolute; right:-40px; top:-40px; width:160px; height:160px;
  background: radial-gradient(circle, rgba(255,255,255,.18), transparent 70%);
}

/* ---------- Chart ---------- */
.chart-card { margin-bottom: 22px; }
.chart-wrap { position: relative; height: 360px; }
@media (max-width: 520px){ .chart-wrap { height: 280px; } }

/* ---------- Table ---------- */
.table-scroll { overflow: auto; max-height: 560px; border-radius: 12px; border: 1px solid var(--line); -webkit-overflow-scrolling: touch; }
.step-ctrl { display: flex; align-items: center; gap: 10px; margin: 2px 0 16px; flex-wrap: wrap; }
.step-ctrl > span { font-size: 13px; font-weight: 700; color: var(--ink-soft); }
.step-ctrl select {
  font-family: inherit; font-size: 13.5px; font-weight: 700; color: var(--ink);
  border: 1.5px solid var(--line); border-radius: 10px; padding: 9px 36px 9px 13px; background-color: #fbfdff;
  cursor: pointer; appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='3'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
  transition: border-color .15s, box-shadow .15s;
}
.step-ctrl select:focus { outline: 0; border-color: var(--brand); box-shadow: 0 0 0 4px var(--brand-soft); background-color: #fff; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 460px; }
thead th {
  background: var(--brand); color: #fff; font-weight: 700; font-size: 12.5px;
  padding: 12px 16px; text-align: right; white-space: nowrap; position: sticky; top: 0;
}
thead th:first-child { text-align: center; }
tbody td { padding: 11px 16px; text-align: right; border-bottom: 1px solid #f1f5f9; font-variant-numeric: tabular-nums; font-family:"Inter","Noto Sans JP",sans-serif; }
tbody td:first-child { text-align: center; font-weight: 700; color: var(--ink-soft); }
tbody tr:nth-child(even){ background: #fafcfe; }
tbody tr.be-row { background: var(--brand-soft) !important; }
tbody tr.be-row td { font-weight: 800; color: var(--brand-deep); border-bottom: 1px solid #bfe9d6; }
tbody tr.be-row td:first-child::after{ content:" ◀ 損益分岐"; font-size: 10.5px; color: var(--brand); font-weight:700; }
tbody tr.total-row td { font-weight: 800; color: var(--ink); border-top: 2px solid var(--brand); background: var(--brand-soft); }
tbody tr.payback-row td:first-child::after{ content:" ◀ 投資回収"; font-size: 10.5px; color: var(--brand); font-weight: 700; }
tbody tr.payback-row { background: var(--brand-soft) !important; }
.loss { color: var(--loss); font-weight: 700; }
.profit { color: var(--profit); font-weight: 700; }

.warn {
  display:none; margin-bottom: 22px; padding: 16px 18px; border-radius: 14px;
  background: #fff5f5; border: 1px solid #fecaca; color: #b42318; font-size: 13.5px; font-weight: 600;
}
.warn.show { display: block; }

footer { color: #8aa0b8; font-size: 12px; text-align: center; padding: 30px 0 40px; }
footer a { color: #b6c6d8; }
.legend-note { font-size: 12px; color: var(--ink-faint); margin-top: 12px; display:flex; gap:18px; flex-wrap:wrap; }
.legend-note span { display:inline-flex; align-items:center; gap:6px; }
.legend-note i { width: 22px; height: 4px; border-radius: 3px; display:inline-block; }
.legend-note i.sq { width: 13px; height: 13px; border-radius: 3px; }