:root {
  --bg: #EDEAE3;
  --paper: #FFFFFF;
  --ink: #1F2126;
  --muted: #6E7076;
  --muted2: #9B9DA2;
  --border: #E5E2DB;
  --border2: #D8D4CA;
  --orange: #E8630A;
  --orange-dark: #C55208;
  --blue: #2F6FBF;
  --green: #2E7D4F;
  --green-bg: #E3F1E8;
  --red: #C6402F;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, system-ui, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.5;
}

a { color: var(--orange); }
a:hover { color: var(--orange-dark); }

.wrap {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: #F2F0EA;
}

.hdr {
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hdr .mark {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--ink); color: #F7F5F1;
  font-weight: 900; display: flex; align-items: center; justify-content: center;
  font-size: 15px; flex-shrink: 0;
}
.hdr .biz-name { font-weight: 800; font-size: 16px; }
.hdr .lic { color: var(--muted); font-size: 12px; margin-top: 2px; }

main { flex: 1; padding-bottom: 24px; }

.doc {
  background: var(--paper);
  margin: 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 18px;
}
.doc .t { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.doc .k { font-weight: 900; letter-spacing: 0.08em; font-size: 13px; }
.doc .k.invoice { color: var(--orange); }
.doc .k.estimate { color: var(--blue); }
.doc .no { color: var(--muted); font-size: 12px; text-align: right; }
.doc .amt { font-weight: 900; font-size: 32px; margin-top: 8px; }
.doc .due { color: var(--muted); font-size: 13px; margin-top: 2px; }
.doc .billto { margin-top: 14px; font-size: 13px; color: var(--muted); }
.doc .billto b { color: var(--ink); }

.doc table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 13px; }
.doc td { padding: 8px 0; border-top: 1px solid #F0EDE6; vertical-align: top; }
.doc td.num { text-align: right; font-weight: 600; white-space: nowrap; }
.doc .line-sub { color: var(--muted2); font-size: 12px; margin-top: 2px; }

.totals { margin: 14px; background: var(--paper); border: 1px solid var(--border); border-radius: 10px; padding: 14px 18px; }
.totals .row { display: flex; justify-content: space-between; font-size: 14px; padding: 4px 0; }
.totals .row.total { font-weight: 900; font-size: 18px; padding-top: 10px; margin-top: 6px; border-top: 1px solid var(--border); }

.paybtn {
  margin: 0 14px 10px 14px; min-height: 54px; border-radius: 12px;
  background: var(--orange); color: #FFFFFF; text-decoration: none;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 17px; font-weight: 800;
}
.paybtn:hover { color: #FFFFFF; background: var(--orange-dark); }

.cta { display: flex; gap: 10px; margin: 4px 14px 0 14px; }
.btn { border: none; font: inherit; cursor: pointer; }
.ok { flex: 1.5; min-height: 54px; border-radius: 12px; background: var(--green); color: #FFFFFF; display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 16px; font-weight: 800; }
.decline { flex: 1; min-height: 54px; border-radius: 12px; border: 1.5px solid var(--border2); background: var(--paper); color: var(--red); display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 700; }
.hint { margin: 8px 18px 0 18px; color: var(--muted2); font-size: 12px; text-align: center; }

.banner { margin: 14px; border-radius: 10px; padding: 14px 16px; font-weight: 700; font-size: 14px; }
.banner.approved { background: var(--green-bg); color: var(--green); }
.banner.declined { background: #F2EFE8; color: var(--muted); border: 1px solid var(--border); }

.thanks { text-align: center; color: var(--muted2); font-size: 12px; padding: 4px 14px 14px 14px; }

.state-page {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 32px 24px; text-align: center; gap: 12px;
}
.state-page .mark { width: 40px; height: 40px; border-radius: 10px; background: var(--ink); color: #F7F5F1; font-weight: 900; display: flex; align-items: center; justify-content: center; }
.state-page h1 { font-size: 20px; margin: 0; }
.state-page p { color: var(--muted); font-size: 14px; margin: 0; line-height: 1.6; max-width: 320px; }

.foot { margin-top: auto; padding: 16px; text-align: center; color: var(--muted2); font-size: 12px; line-height: 1.8; border-top: 1px solid var(--border); background: var(--paper); }
.foot b { color: var(--muted); }
.linklike { background: none; border: none; padding: 0; font: inherit; color: inherit; cursor: pointer; text-decoration: none; }
.linklike:hover { color: var(--ink); }
.foot .sep { margin: 0 6px; }

/* Report a problem インラインフォーム */
.report-form { margin: 10px 14px 0 14px; background: var(--paper); border: 1px solid var(--border); border-radius: 10px; padding: 14px; text-align: left; }
.report-form p.desc { color: var(--muted); font-size: 12px; margin: 0 0 10px 0; line-height: 1.6; }
.report-form textarea {
  width: 100%; min-height: 80px; border: 1.5px solid var(--border2); border-radius: 8px;
  padding: 10px; font: inherit; font-size: 14px; color: var(--ink); resize: vertical;
}
.report-form .actions { display: flex; gap: 8px; margin-top: 10px; justify-content: flex-end; }
.report-form .actions button { min-height: 40px; padding: 0 16px; border-radius: 8px; font-size: 14px; font-weight: 700; }
.report-form .actions .primary { background: var(--ink); color: #fff; border: none; }
.report-form .actions .cancel { background: none; border: 1.5px solid var(--border2); color: var(--ink); }
.report-form .error { color: var(--red); font-size: 12px; margin-top: 6px; }
.report-form .success { color: var(--green); font-size: 13px; font-weight: 700; }

/* 承認/辞退の確認モーダル */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(31,33,38,0.45);
  display: flex; align-items: flex-end; justify-content: center; z-index: 10;
}
@media (min-width: 480px) {
  .modal-backdrop { align-items: center; }
}
.modal {
  background: var(--paper); border-radius: 16px 16px 0 0; padding: 20px;
  width: 100%; max-width: 480px;
}
@media (min-width: 480px) {
  .modal { border-radius: 16px; }
}
.modal h2 { font-size: 17px; margin: 0 0 4px 0; }
.modal .modal-amt { font-weight: 900; font-size: 24px; margin: 6px 0 12px 0; }
.modal label { display: block; font-size: 12px; font-weight: 700; color: var(--muted); letter-spacing: 0.03em; margin-bottom: 6px; }
.modal input[type="text"] {
  width: 100%; min-height: 48px; border: 1.5px solid var(--border2); border-radius: 10px;
  padding: 0 14px; font: inherit; font-size: 17px; color: var(--ink);
}
.modal .error { color: var(--red); font-size: 13px; margin-top: 8px; }
.modal .actions { display: flex; gap: 10px; margin-top: 16px; }
.modal .actions button { flex: 1; min-height: 50px; border-radius: 12px; font-size: 15px; font-weight: 700; }
.modal .actions .confirm { border: none; color: #fff; }
.modal .actions .confirm.approve { background: var(--green); }
.modal .actions .confirm.decline { background: var(--red); }
.modal .actions .cancel { background: none; border: 1.5px solid var(--border2); color: var(--ink); }

.offline-toast {
  position: fixed; left: 14px; right: 14px; bottom: 14px; max-width: 452px; margin: 0 auto;
  background: var(--ink); color: #fff; padding: 12px 16px; border-radius: 10px; font-size: 13px; text-align: center;
}