:root {
  color-scheme: var(--tg-color-scheme, light);
  --bg: var(--tg-theme-bg-color, #f2f2f7);
  --surface: var(--tg-theme-section-bg-color, var(--tg-theme-secondary-bg-color, #fff));
  --text: var(--tg-theme-text-color, #111);
  --hint: var(--tg-theme-hint-color, #777);
  --accent: var(--tg-theme-button-color, #2481cc);
  --accent-text: var(--tg-theme-button-text-color, #fff);
  --separator: var(--tg-theme-section-separator-color, rgba(127,127,127,.2));
  --danger: var(--tg-theme-destructive-text-color, #e53935);
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font: 16px/1.35 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; }
body { padding: max(10px, var(--tg-safe-area-inset-top, 0px)) max(12px, var(--tg-safe-area-inset-right, 0px)) calc(84px + var(--tg-safe-area-inset-bottom, 0px)) max(12px, var(--tg-safe-area-inset-left, 0px)); }
button, input, select { font: inherit; }
button { cursor: pointer; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 4px 2px 14px; }
.topbar h1 { font-size: 22px; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.actions { display: flex; gap: 8px; }
.icon-button, .chip, .secondary, .danger { border: 0; border-radius: 12px; min-height: 40px; padding: 8px 12px; color: var(--accent); background: var(--surface); }
.icon-button { width: 42px; padding: 0; font-size: 20px; }
.transaction-list { display: grid; gap: 9px; }
.card { width: 100%; text-align: left; color: var(--text); background: var(--surface); border: 0; border-radius: 14px; padding: 13px 14px; box-shadow: 0 1px 1px rgba(0,0,0,.03); }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.card-title { font-weight: 650; overflow-wrap: anywhere; }
.amount { font-weight: 700; white-space: nowrap; }
.meta { color: var(--hint); font-size: 13px; margin-top: 5px; }
.avatar { width: 28px; height: 28px; flex: 0 0 28px; border-radius: 50%; object-fit: cover; background: var(--separator); }
.avatar-fallback { display: inline-grid; place-items: center; color: var(--accent); font-size: 10px; font-weight: 700; }
.user-badge { display: inline-flex; align-items: center; gap: 5px; color: var(--text); }
.user-badge .avatar { width: 22px; height: 22px; flex-basis: 22px; }
.user-line, .badge-list { display: flex; align-items: center; flex-wrap: wrap; gap: 5px; }
.select-user { display: flex; align-items: center; gap: 10px; }
.floating-add { position: fixed; right: max(18px, calc(var(--tg-safe-area-inset-right, 0px) + 18px)); bottom: max(18px, calc(var(--tg-safe-area-inset-bottom, 0px) + 18px)); width: 56px; height: 56px; border-radius: 50%; border: 0; background: var(--accent); color: var(--accent-text); font-size: 30px; box-shadow: 0 4px 18px rgba(0,0,0,.22); }
.section-title { margin: 16px 4px 7px; color: var(--hint); font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }
.form-section { background: var(--surface); border-radius: 14px; overflow: hidden; margin-bottom: 14px; }
.field { display: block; padding: 11px 14px; border-bottom: 1px solid var(--separator); }
.field:last-child { border-bottom: 0; }
.field > span { display: block; color: var(--hint); font-size: 13px; margin-bottom: 5px; }
input, select { width: 100%; min-height: 40px; border: 0; outline: none; padding: 4px 0; background: transparent; color: var(--text); }
select option { color: #111; }
.inline { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; background: var(--bg); border-radius: 10px; padding: 3px; }
.segmented button { min-height: 36px; border: 0; border-radius: 8px; color: var(--hint); background: transparent; }
.segmented button.active { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.people { display: grid; gap: 1px; }
.person { display: grid; grid-template-columns: auto auto 1fr minmax(90px, .5fr); align-items: center; gap: 10px; min-height: 48px; padding: 6px 14px; border-bottom: 1px solid var(--separator); }
.person:last-child { border: 0; }
.person input[type=checkbox] { width: 22px; min-height: 22px; accent-color: var(--accent); }
.person .share { border: 1px solid var(--separator); border-radius: 9px; padding: 5px 8px; text-align: right; }
.summary { display: flex; justify-content: space-between; padding: 11px 14px; color: var(--hint); }
.summary.invalid { color: var(--danger); }
.fallback-save { width: 100%; min-height: 48px; border: 0; border-radius: 13px; background: var(--accent); color: var(--accent-text); font-weight: 650; }
.fallback-save:disabled { opacity: .5; }
.danger { width: 100%; color: var(--danger); margin-top: 10px; }
.center { min-height: 70vh; display: grid; place-content: center; text-align: center; color: var(--hint); padding: 24px; }
.spinner { width: 28px; height: 28px; border: 3px solid var(--separator); border-top-color: var(--accent); border-radius: 50%; margin: auto; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.empty { color: var(--hint); text-align: center; padding: 48px 20px; }
.admin-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--separator); }
.admin-row:last-child { border: 0; }
.admin-row input { border-bottom: 1px solid var(--separator); }
.admin-user { display: flex; align-items: center; gap: 10px; min-width: 0; }
.secondary { color: var(--accent); white-space: nowrap; }
#toast { position: fixed; left: 50%; bottom: 80px; z-index: 20; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; color: var(--accent-text); background: var(--accent); border-radius: 10px; padding: 9px 14px; transition: .2s; }
#toast.show { opacity: 1; transform: translate(-50%, 0); }
@media (min-width: 700px) { body { max-width: 680px; margin: auto; } }