:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #1a2233;
  --muted: #6b7486;
  --primary: #1a56db;
  --danger: #d92d20;
  --warn: #b54708;
  --ok: #067647;
  --border: #e3e7ef;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: env(safe-area-inset-bottom);
}
.hidden { display: none !important; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.topbar h1 { font-size: 17px; margin: 0; }
.topbar-actions { display: flex; gap: 8px; }

.tabs { display: flex; gap: 4px; padding: 10px 16px 0; }
.tab {
  border: none; background: transparent; padding: 8px 14px; border-radius: 8px 8px 0 0;
  font-size: 14px; color: var(--muted); cursor: pointer;
}
.tab.active { background: var(--card); color: var(--primary); font-weight: 600; border: 1px solid var(--border); border-bottom: none; }

main { padding: 0 16px 32px; }
.summary { padding: 10px 2px; color: var(--muted); font-size: 13px; }

.list { display: flex; flex-direction: column; gap: 10px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px;
}
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.vendor { font-weight: 700; font-size: 15px; }
.title { color: var(--muted); font-size: 13px; margin-top: 2px; }
.amount { font-size: 18px; font-weight: 700; white-space: nowrap; }

.meta { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 8px; font-size: 13px; color: var(--muted); }
.meta b { color: var(--text); font-weight: 600; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge.unpaid { background: #fef0c7; color: var(--warn); }
.badge.paid { background: #d1fadf; color: var(--ok); }
.badge.overdue { background: #fee4e2; color: var(--danger); }
.badge.soon { background: #fee4e2; color: var(--danger); }
.badge.src { background: #eef2ff; color: #3538cd; }

.links { margin-top: 8px; font-size: 13px; }
.links a { color: var(--primary); word-break: break-all; }
.links .pw { background: #f2f4f7; border-radius: 6px; padding: 1px 6px; font-family: ui-monospace, monospace; }

.actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.btn {
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  border-radius: 8px; padding: 7px 12px; font-size: 13px; cursor: pointer; text-decoration: none;
}
.btn:hover { background: #f7f8fb; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: #164bbd; }
.btn.danger { color: var(--danger); border-color: #fecdca; }
.btn.ghost { background: transparent; }

.empty { text-align: center; color: var(--muted); padding: 48px 0; }

/* modal */
.modal {
  position: fixed; inset: 0; background: rgba(16, 24, 40, 0.5);
  display: flex; align-items: center; justify-content: center; z-index: 50; padding: 16px;
}
.modal-box {
  background: var(--card); border-radius: var(--radius); width: 100%; max-width: 560px;
  max-height: 92vh; display: flex; flex-direction: column;
}
.modal-box.large { max-width: 900px; height: 92vh; }
.modal-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
}
.modal-head h2 { font-size: 15px; margin: 0; }
.modal-content { padding: 16px; overflow: auto; flex: 1; }
.modal-content iframe { width: 100%; height: 100%; min-height: 60vh; border: 1px solid var(--border); border-radius: 8px; }
.modal-content img { max-width: 100%; }
.modal-content pre.mailbody {
  white-space: pre-wrap; word-break: break-word; font-family: inherit; font-size: 14px;
  background: #f9fafb; padding: 16px; border-radius: 8px; border: 1px solid var(--border);
}

/* form */
.form label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.form input, .form textarea {
  width: 100%; margin-top: 4px; padding: 8px 10px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; font-family: inherit;
}
.form fieldset { border: 1px solid var(--border); border-radius: 8px; margin: 0 0 10px; }
.form legend { font-size: 12px; color: var(--muted); padding: 0 6px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-actions { text-align: right; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #101828; color: #fff; padding: 10px 18px; border-radius: 999px;
  font-size: 13px; z-index: 100; box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}

/* settings: ignore list */
.settings-title { font-size: 15px; margin: 0 0 4px; }
.settings-note { font-size: 12px; color: var(--muted); margin: 0 0 12px; }
.ignore-list { display: flex; flex-direction: column; gap: 8px; }
.ignore-row {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px;
}
.ignore-addr { font-size: 13px; word-break: break-all; }