:root {
  --bg: #f5f3ee; --card: #ffffff; --ink: #1d2422; --muted: #66706c; --line: #e2ded5;
  --accent: #14363a; --accent-2: #2f6f6a; --warn: #a15c00; --bad: #a3271f; --ok: #2b6b3f;
  --test: #7a3db8; --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121614; --card: #1b201e; --ink: #e9ece8; --muted: #9aa49f; --line: #2c3330;
    --accent: #9fd4cc; --accent-2: #7cc0b6; --warn: #e3a54b; --bad: #ef8a80; --ok: #8fd3a3; --test: #c49af0; color-scheme: dark; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif; }
a { color: var(--accent-2); }
.muted { color: var(--muted); } .small { font-size: 13px; }
.wrap { max-width: 720px; margin: 0 auto; padding: 12px 16px 40px; }

.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; padding-top: max(10px, env(safe-area-inset-top)); background: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { .top { background: #0d1a1b; } }
.brand { font-weight: 800; letter-spacing: .04em; font-size: 18px; }
.brand-sub { font-weight: 600; font-size: 12px; opacity: .7; }
.top-right { display: flex; gap: 10px; align-items: center; }
.btn-link { background: none; border: 0; color: inherit; font-size: 13px; text-decoration: underline; padding: 6px; }
.badge { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 99px; background: #fff3; }
.badge-test { background: var(--test); color: #fff; }
.badge-live { background: #2b6b3f; color: #fff; }
.mock-banner { background: var(--test); color: #fff; font-size: 13px; padding: 8px 16px; text-align: center; font-weight: 600; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 12px 0; }
.label { display: block; font-weight: 700; margin-bottom: 6px; }
textarea, input { width: 100%; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px; }
textarea:focus, input:focus { outline: 2px solid var(--accent-2); outline-offset: 0; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 12px; }
.chip { border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 99px; padding: 4px 12px; font-size: 13px; }
.btn-primary, .btn-secondary { width: 100%; font: inherit; font-weight: 700; border-radius: 12px; padding: 12px; border: 0; }
.btn-primary { background: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { .btn-primary { color: #0d1a1b; } }
.btn-secondary { background: transparent; border: 1.5px solid var(--accent-2); color: var(--accent-2); margin-top: 6px; }
button:disabled { opacity: .5; }

.status { min-height: 1.4em; margin: 8px 2px; font-size: 14px; color: var(--muted); }
.status.busy::before { content: ""; display: inline-block; width: 12px; height: 12px; margin-right: 8px; vertical-align: -1px;
  border: 2px solid var(--accent-2); border-right-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.h2 { font-size: 15px; margin: 0 0 8px; }
.kv { display: grid; grid-template-columns: 6.5em 1fr; gap: 4px 10px; margin: 0; font-size: 14px; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; }
.assume { margin: 10px 0 0; padding: 0; list-style: none; font-size: 13px; color: var(--muted); }
.questions { margin-top: 10px; padding: 10px 12px; border-radius: 10px; background: color-mix(in srgb, var(--warn) 14%, transparent); font-size: 14px; }
.questions p { margin: 2px 0; }
.edit-wrap { margin-top: 10px; } .edit-wrap summary { font-size: 14px; color: var(--accent-2); cursor: pointer; }
.edit { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 8px; }
.edit .btn-secondary { grid-column: 1 / -1; }
.field { font-size: 12px; color: var(--muted); display: flex; flex-direction: column; gap: 2px; }
.field.need input { border-color: var(--warn); border-width: 2px; }

.plain { list-style: none; padding: 0; margin: 0; font-size: 14px; }
.plan-title { font-size: 17px; margin: 0 0 8px; }
.mock-tag { font-size: 12px; font-weight: 700; color: var(--test); margin-bottom: 6px; }
.total { border-radius: 12px; padding: 10px 12px; background: var(--bg); }
.total-label { font-size: 12px; color: var(--muted); font-weight: 700; }
.total-amount { font-size: 32px; font-weight: 800; letter-spacing: .01em; line-height: 1.2; font-variant-numeric: tabular-nums; }
.total-amount.is-mock { color: var(--test); }
.total-amount .plus { font-size: 14px; font-weight: 700; color: var(--bad); margin-left: 8px; }
.budget { font-size: 13px; font-weight: 600; margin-top: 2px; }
.budget.over { color: var(--bad); } .budget.within { color: var(--ok); } .budget.within_known { color: var(--warn); }
.feas { margin: 10px 0 6px; font-size: 14px; font-weight: 700; }
.feas-ok { color: var(--ok); } .feas-risky { color: var(--warn); } .feas-unknown { color: var(--muted); } .feas-infeasible { color: var(--bad); }
.lodging-name { font-weight: 700; }
.why { font-size: 14px; background: color-mix(in srgb, var(--accent-2) 10%, transparent); border-radius: 10px; padding: 8px 10px; }
.list h3 { font-size: 13px; margin: 10px 0 2px; color: var(--muted); }
.list ul { margin: 0; padding-left: 1.2em; font-size: 14px; }
.list.cons li::marker { color: var(--bad); } .list.notes { font-size: 13px; }
.breakdown { margin-top: 8px; font-size: 14px; } .breakdown summary { color: var(--accent-2); cursor: pointer; }
.breakdown table { width: 100%; border-collapse: collapse; margin-top: 6px; }
.breakdown td { border-top: 1px solid var(--line); padding: 6px 4px; vertical-align: top; }
.breakdown .num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.transport { margin-top: 10px; }
.plan-overall { border: 2px solid var(--accent-2); }
.excluded summary { font-size: 14px; font-weight: 700; color: var(--bad); cursor: pointer; }
.excluded li { font-size: 13px; margin: 6px 0; }
.bae { padding-left: 1.4em; margin: 0; } .bae li { margin: 8px 0; }
.bae-head { display: flex; justify-content: space-between; gap: 8px; }
.score { font-weight: 800; color: var(--accent-2); white-space: nowrap; }
.spots { padding-left: 1.2em; margin: 0; font-size: 14px; }
.foot { text-align: center; padding: 16px; padding-bottom: max(16px, env(safe-area-inset-bottom)); }

.login-body { display: grid; place-items: center; min-height: 100vh; }
.login { width: min(360px, 100% - 32px); }
.login form { display: grid; gap: 10px; }
.login label { font-weight: 700; font-size: 14px; }
.login input { font-size: 20px; letter-spacing: .15em; text-align: center; }
.login .brand { color: var(--accent); font-size: 26px; margin: 0; }
.error { color: var(--bad); font-size: 14px; min-height: 1.2em; margin: 0; }