:root {
  --bg: #F6F8FB; --card: #FFFFFF; --text: #111827; --muted: #6B7280; --line: #E5E7EB;
  --blue: #1A6BFF; --blue-soft: #EEF4FF; --green: #059669; --green-soft: #ECFDF5;
  --amber: #B45309; --amber-soft: #FFFBEB; --red: #DC2626; --red-soft: #FEF2F2;
  --purple: #7C3AED; --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F141B; --card: #171E28; --text: #E5E7EB; --muted: #9CA3AF; --line: #2A3442;
    --blue: #5B93FF; --blue-soft: #1A2A47; --green: #34D399; --green-soft: #12312A;
    --amber: #FBBF24; --amber-soft: #3A2E12; --red: #F87171; --red-soft: #3B1A1A; --purple: #A78BFA;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.center { display: flex; align-items: center; justify-content: center; min-height: 60vh; }

/* top bar */
.top { position: sticky; top: 0; z-index: 10; background: var(--card); border-bottom: 1px solid var(--line); }
.top-in { max-width: 1240px; margin: 0 auto; display: flex; align-items: center; gap: 20px; padding: 0 20px; height: 56px; }
.brand { font-weight: 800; font-size: 17px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.brand .dot { width: 22px; height: 22px; border-radius: 6px; background: var(--blue); }
.nav { display: flex; gap: 4px; flex: 1; }
.nav a { padding: 8px 12px; border-radius: 8px; color: var(--muted); font-weight: 600; }
.nav a.on { background: var(--blue-soft); color: var(--blue); text-decoration: none; }
.nav a:hover { text-decoration: none; color: var(--text); }
.who { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 999px;
  background: var(--blue-soft); color: var(--blue); letter-spacing: .02em; }
.badge.free { background: var(--line); color: var(--muted); }
.badge.premium { background: #F3E8FF; color: var(--purple); }
@media (prefers-color-scheme: dark) { .badge.premium { background: #2A1F45; } }

main { max-width: 1240px; margin: 0 auto; padding: 24px 20px 120px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.row { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12px; color: var(--muted); font-weight: 600; }
input, select, textarea { font: inherit; color: var(--text); background: var(--card);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; min-height: 36px; }
textarea { min-height: 70px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--blue); outline-offset: -1px; border-color: transparent; }
.btn { font: inherit; font-weight: 600; border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 8px; padding: 8px 14px; min-height: 36px; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { border-color: transparent; background: transparent; color: var(--blue); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.sm { padding: 4px 10px; min-height: 28px; font-size: 13px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font: inherit; font-size: 13px; border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 999px; padding: 5px 12px; cursor: pointer; }
.chip.on { background: var(--blue); border-color: var(--blue); color: #fff; }

/* tables */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; background: var(--bg); position: sticky; top: 0; }
tr:last-child td { border-bottom: none; }
tr.sel td { background: var(--blue-soft); }
td.num, th.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
td.nowrap { white-space: nowrap; }
.addr { max-width: 300px; }
.addr div { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.month-row td { background: var(--bg); font-weight: 700; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.tag { display: inline-block; font-size: 11px; font-weight: 600; padding: 1px 7px; border-radius: 6px; background: var(--line); color: var(--muted); }
.tag.green { background: var(--green-soft); color: var(--green); }
.tag.amber { background: var(--amber-soft); color: var(--amber); }
.tag.blue  { background: var(--blue-soft); color: var(--blue); }
input[type=checkbox] { width: 16px; height: 16px; min-height: 0; accent-color: var(--blue); cursor: pointer; }
td select { min-height: 28px; padding: 3px 6px; font-size: 13px; }

/* summary tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin: 14px 0; }
.tile { background: var(--bg); border-radius: 10px; padding: 12px 14px; }
.tile .k { font-size: 12px; color: var(--muted); }
.tile .v { font-size: 20px; font-weight: 700; margin-top: 2px; font-variant-numeric: tabular-nums; }
.tile .v.green { color: var(--green); }

/* selection bar */
.selbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; background: var(--card); border-top: 1px solid var(--line);
  box-shadow: 0 -6px 20px rgba(0,0,0,.06); }
.selbar-in { max-width: 1240px; margin: 0 auto; padding: 12px 20px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.selbar .info { flex: 1; min-width: 200px; font-weight: 600; }

/* banners */
.banner { border-radius: 10px; padding: 10px 14px; margin-bottom: 12px; font-size: 13px; }
.banner.info { background: var(--blue-soft); color: var(--blue); }
.banner.warn { background: var(--amber-soft); color: var(--amber); }
.banner.err  { background: var(--red-soft); color: var(--red); }
.banner.ok   { background: var(--green-soft); color: var(--green); }

/* login */
.login { max-width: 380px; margin: 9vh auto 0; }
.login .card { padding: 26px; }
.login .field { margin-bottom: 12px; }
.login input:not([type=checkbox]) { width: 100%; }
.login .btn.primary { width: 100%; margin-top: 6px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); margin: 6px 0 4px; }

/* drop zone */
.drop { display: block; border: 2px dashed var(--line); border-radius: var(--radius); padding: 34px 20px; text-align: center; cursor: pointer; background: var(--card); }
.drop.over { border-color: var(--blue); background: var(--blue-soft); }
.drop strong { display: block; font-size: 15px; margin-bottom: 4px; }

/* modal */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 50; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal { background: var(--card); border-radius: var(--radius); padding: 22px; width: 100%; max-width: 460px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.toast { position: fixed; left: 50%; bottom: 84px; transform: translateX(-50%); z-index: 60; background: #111827; color: #fff;
  padding: 10px 16px; border-radius: 10px; font-size: 13px; max-width: 90vw; box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.toast.err { background: var(--red); }
.spin { display: inline-block; width: 14px; height: 14px; border: 2px solid currentColor; border-right-color: transparent;
  border-radius: 50%; animation: sp .7s linear infinite; vertical-align: -2px; }
@keyframes sp { to { transform: rotate(360deg); } }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 860px) {
  .grid2 { grid-template-columns: 1fr; }
  .top-in { flex-wrap: wrap; height: auto; padding: 8px 16px; gap: 8px; }
  .nav { order: 3; width: 100%; overflow-x: auto; }
  main { padding: 16px 16px 140px; }
}