/* Layout: sticky notebook header with tabs, one working column (max 1120px); panels laid out in an auto-fit grid. */
:root {
  --bg: #F4F6F9;
  --surface: #FFFFFF;
  --surface-2: #EEF1F6;
  --ink: #18202E;
  --muted: #5B6476;
  --line: #DCE1E9;
  --accent: #2B4ACB;
  --accent-ink: #FFFFFF;
  --accent-soft: #E5EAFB;
  --mark: #D99A00;
  --mark-soft: #FBF1D6;
  --good: #1D8752;
  --good-soft: #E1F3E9;
  --warn: #A9670F;
  --warn-soft: #FAEEDC;
  --bad: #BE3B26;
  --bad-soft: #FBE6E1;
  --shadow: 0 1px 2px rgba(24,32,46,.06), 0 6px 20px rgba(24,32,46,.06);
  --font-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --font-body: "Figtree", "Segoe UI", system-ui, -apple-system, sans-serif;
  --r: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0F131B; --surface: #171C26; --surface-2: #1E2431; --ink: #E7EAF0; --muted: #9AA3B5; --line: #2A3141;
    --accent: #8099FF; --accent-ink: #0F131B; --accent-soft: #1E284A; --mark: #F0C04F; --mark-soft: #3A3018;
    --good: #52C68E; --good-soft: #17352A; --warn: #E4AA52; --warn-soft: #3A2C17; --bad: #F2806B; --bad-soft: #3F211C;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: 15px; line-height: 1.5; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
h1 { font-size: 1.7rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }
button, input, select, textarea { font: inherit; color: inherit; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .9em; }
.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.top { position: sticky; top: 0; z-index: 5; background: var(--surface); border-bottom: 1px solid var(--line); padding-top: env(safe-area-inset-top, 0px); }
.top-in { max-width: 1120px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); display: flex; align-items: center; gap: 20px; flex-wrap: wrap; padding-block: 10px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.brand-mark { width: 28px; height: 28px; border-radius: 7px; background: var(--accent); display: grid; place-items: center; }
.brand-mark svg { display: block; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.tab { padding: 7px 12px; border-radius: 8px; color: var(--muted); text-decoration: none; font-weight: 600; }
.tab:hover { background: var(--surface-2); color: var(--ink); }
.tab[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }
.tab.private { display: inline-flex; align-items: center; gap: 6px; }
.tab.private svg { display: block; }
.top-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
main { max-width: 1120px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); padding-block: 24px 64px; display: grid; gap: 20px; }
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--surface); padding: 7px 12px; border-radius: 8px; cursor: pointer; font-weight: 600; font-size: .9rem; white-space: nowrap; text-decoration: none; color: var(--ink); }
.btn:hover { border-color: var(--muted); }
.btn:disabled { opacity: .6; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { border-color: transparent; background: transparent; color: var(--accent); padding-inline: 8px; }
.btn.ghost:hover { background: var(--accent-soft); }
.btn.danger { color: var(--bad); }
.btn.danger.armed { background: var(--bad); color: var(--surface); border-color: var(--bad); }
.btn:focus-visible, .tab:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .card-link:focus-visible, .seg button:focus-visible, tr.clickable:focus-visible, li.clickable:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.page-head p { margin: 2px 0 0; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 16px; }
.kpi .label { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 600; }
.kpi .value { font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; margin-top: 2px; font-variant-numeric: tabular-nums; }
.kpi .sub { font-size: .85rem; color: var(--muted); }
.kpi.alert .value { color: var(--warn); }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; align-items: start; }
@media (max-width: 400px) { .grid2 { grid-template-columns: 1fr; } }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); min-width: 0; }
.panel-h { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 14px 16px 10px; flex-wrap: wrap; }
.panel-b { padding: 0 16px 14px; }
.list { list-style: none; margin: 0; padding: 0; }
.row { display: flex; align-items: center; gap: 12px; padding: 10px 16px; border-top: 1px solid var(--line); }
.row:first-child { border-top: 0; }
.row .grow { flex: 1; min-width: 0; }
.row .title { font-weight: 600; overflow-wrap: anywhere; }
.row .meta { font-size: .85rem; color: var(--muted); overflow-wrap: anywhere; }
.date-chip { flex: none; width: 52px; text-align: center; border-radius: 8px; background: var(--surface-2); padding: 4px 0; line-height: 1.15; }
.date-chip b { display: block; font-family: var(--font-display); font-size: 1.2rem; }
.date-chip span { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.date-chip.today { background: var(--accent); color: var(--accent-ink); }
.date-chip.today span { color: var(--accent-ink); opacity: .85; }
.empty { padding: 18px 16px; color: var(--muted); border-top: 1px dashed var(--line); }
.panel-h + .empty { border-top: 0; }
.pill { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 99px; font-size: .78rem; font-weight: 600; white-space: nowrap; }
.pill.planned, .pill.new { background: var(--accent-soft); color: var(--accent); }
.pill.done, .pill.paid { background: var(--good-soft); color: var(--good); }
.pill.cancelled { background: var(--surface-2); color: var(--muted); text-decoration: line-through; }
.pill.unpaid, .pill.opened { background: var(--warn-soft); color: var(--warn); }
.pill.late { background: var(--bad-soft); color: var(--bad); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.card-link { display: grid; gap: 10px; text-decoration: none; color: inherit; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 16px; transition: border-color .15s, box-shadow .15s; }
.card-link:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.card-top { display: flex; align-items: center; gap: 10px; }
.avatar { flex: none; width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; background: var(--accent-soft); color: var(--accent); }
.card-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; border-top: 1px solid var(--line); padding-top: 10px; }
.card-stats div { min-width: 0; }
.card-stats b { display: block; font-variant-numeric: tabular-nums; }
.card-stats span { font-size: .75rem; color: var(--muted); }
.card-link.inactive { opacity: .6; }
.trend-up { color: var(--good); }
.trend-down { color: var(--bad); }
.dots { display: inline-flex; gap: 3px; vertical-align: middle; }
.dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
.dots i.on { background: var(--accent); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th { text-align: left; font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 600; padding: 8px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--surface-2); }
td.right, th.right { text-align: right; }
.month-h td { background: var(--surface-2); font-weight: 600; font-family: var(--font-display); }
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.filters select { padding: 7px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); max-width: 100%; }
.profile { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 18px; }
.profile .avatar { width: 56px; height: 56px; font-size: 1.3rem; }
.profile dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px 16px; margin: 12px 0 0; }
.profile dt { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 600; }
.profile dd { margin: 0; overflow-wrap: anywhere; }
.profile .actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 640px) { .profile { grid-template-columns: auto 1fr !important; } .profile .actions { grid-column: 1 / -1; justify-content: flex-start !important; } }
.back { color: var(--accent); text-decoration: none; font-weight: 600; font-size: .9rem; }
.chart-wrap { padding: 0 8px 12px; }
.chart-wrap svg { width: 100%; height: auto; display: block; }
.legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: .85rem; color: var(--muted); padding: 0 16px 14px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.sw { width: 14px; height: 3px; background: var(--accent); border-radius: 2px; }
.sw.sq { width: 10px; height: 10px; background: var(--mark); border-radius: 2px; }
.topics { display: flex; flex-wrap: wrap; gap: 6px; }
.topic { background: var(--surface-2); border-radius: 6px; padding: 3px 8px; font-size: .85rem; }
.state { background: var(--surface); border: 1px dashed var(--line); border-radius: var(--r); padding: 28px; text-align: center; color: var(--muted); }
.overlay { position: fixed; inset: 0; z-index: 20; background: rgba(10,14,22,.45); display: grid; place-items: center; padding: max(16px, env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) max(16px, env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px)); }
.modal { background: var(--surface); border-radius: 14px; width: min(560px, 100%); max-height: 100%; overflow: auto; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.modal-h { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 16px 18px 6px; }
.modal form { padding: 8px 18px 18px; display: grid; gap: 12px; }
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.fields .full { grid-column: 1 / -1; }
@media (max-width: 480px) { .fields { grid-template-columns: 1fr; } }
label.f { display: grid; gap: 4px; font-size: .85rem; font-weight: 600; color: var(--muted); }
label.f input, label.f select, label.f textarea { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); font-weight: 400; font-size: .95rem; color: var(--ink); width: 100%; }
label.f textarea { resize: vertical; min-height: 64px; }
.check { display: flex; align-items: center; gap: 8px; font-size: .92rem; }
.check input { width: 18px; height: 18px; accent-color: var(--accent); flex: none; }
.seg { display: flex; gap: 4px; }
.seg button { flex: 1; border: 1px solid var(--line); background: var(--bg); border-radius: 8px; padding: 6px 0; cursor: pointer; font-weight: 600; }
.seg button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.modal-f { display: flex; gap: 8px; justify-content: space-between; flex-wrap: wrap; padding-top: 4px; }
.modal-f .right { display: flex; gap: 8px; margin-left: auto; }
.hint { font-size: .8rem; color: var(--muted); font-weight: 400; }
.prev { background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; display: grid; gap: 6px; font-size: .9rem; }
.prev-h { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; font-weight: 600; color: var(--accent); font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; }
.prev p { margin: 0; overflow-wrap: anywhere; }
.prev b { font-weight: 600; }
.prev.none { background: var(--surface-2); color: var(--muted); }
.plan-text { white-space: pre-line; }
details.money { border: 1px dashed var(--line); border-radius: 10px; padding: 8px 12px; }
details.money summary { cursor: pointer; font-weight: 600; font-size: .88rem; color: var(--muted); }
details.money[open] summary { margin-bottom: 10px; }
.toast { position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-weight: 600; z-index: 30; box-shadow: var(--shadow); max-width: calc(100% - 32px); }
html, body { margin: 0; }
[hidden] { display: none !important; }
img { max-width: 100%; }
.login-wrap { min-height: 100dvh; display: grid; place-items: center; padding-block: 24px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.login { width: min(420px, 100%); background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 28px; display: grid; gap: 14px; box-shadow: var(--shadow); }
.login .brand { justify-content: center; font-size: 1.35rem; }
.login p { margin: 0; text-align: center; }
.err { color: var(--bad); font-size: .9rem; }
.err:empty { display: none; }
.user-chip { display: flex; align-items: center; gap: 8px; font-size: .88rem; color: var(--muted); }
.solve { position: fixed; inset: 0; z-index: 8; display: grid; grid-template-rows: auto 1fr; background: var(--bg); }
.solve-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding-block: calc(8px + env(safe-area-inset-top, 0px)) 8px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); background: var(--surface); border-bottom: 1px solid var(--line); }
.solve-bar .grow { flex: 1; min-width: 0; }
.solve-bar .title { font-family: var(--font-display); font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.solve iframe { width: 100%; height: 100%; border: 0; background: #fff; }
.result-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 99px; font-weight: 600; font-size: .85rem; background: var(--good-soft); color: var(--good); white-space: nowrap; }
.result-chip.preview { background: var(--mark-soft); color: var(--warn); }
.codebox { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; background: var(--surface-2); padding: 10px 12px; border-radius: 8px; font-size: .84rem; overflow-x: auto; white-space: pre; margin: 0; }
.answers { display: grid; gap: 4px; font-size: .88rem; background: var(--surface-2); border-radius: 8px; padding: 10px 12px; overflow-wrap: anywhere; }
.answers div { display: flex; gap: 8px; }
.answers b { flex: none; }
.hw-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.hw-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 16px; display: grid; gap: 10px; align-content: start; }
.hw-card h3 { font-size: 1.05rem; }
.hw-card p { margin: 0; color: var(--muted); font-size: .9rem; overflow-wrap: anywhere; }
.hw-card .foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.cred { display: grid; gap: 6px; background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; font-size: .95rem; }
.checklist { display: grid; gap: 6px; max-height: 260px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
.section-title { font-family: var(--font-display); font-size: 1.05rem; margin: 6px 0 0; }