/* =====================================================================
   BuddyBudget — clean, minimal, app-style UI layered on Bootstrap 5
   =====================================================================
   Layout model
   ------------
   Desktop : centred column, floating rounded cards on a soft grey canvas.
   Mobile  : native-app feel — sticky translucent app bar with safe-area
             padding, edge-to-edge card sections, bottom tab bar and
             bottom-sheet dialogs for editing.
   ===================================================================== */

:root {
  --ts-bg:        #f3f4f6;
  --ts-surface:   #ffffff;
  --ts-ink:       #10151b;
  --ts-muted:     #79828e;
  --ts-line:      #ebedf0;
  --ts-line-soft: #f1f2f4;

  --ts-brand:     #2f6f4f;
  --ts-brand-ink: #24573e;
  --ts-brand-2:   #e8f1ec;

  --ts-pos:       #2f6f4f;
  --ts-neg:       #c1543a;

  --ts-radius:    18px;
  --ts-radius-sm: 12px;
  --ts-shadow:    0 1px 2px rgba(16, 21, 27, .05);

  --ts-nav-h:     64px;
  --ts-gutter:    1rem;

  --sat: env(safe-area-inset-top, 0px);
  --sab: env(safe-area-inset-bottom, 0px);

  /* Where a sticky call-to-action parks itself on small screens. */
  --ts-cta-bottom: calc(var(--ts-nav-h) + var(--sab) + .5rem);
}

* { -webkit-tap-highlight-color: transparent; }

body {
  background: var(--ts-bg);
  color: var(--ts-ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  padding-bottom: calc(var(--ts-nav-h) + var(--sab));
}

a { color: var(--ts-brand); text-decoration: none; }
a:hover { color: var(--ts-brand-ink); }

.ts-page { max-width: 900px; }
.min-w-0 { min-width: 0; }

/* =====================================================================
   App bar
   ===================================================================== */
.ts-appbar {
  position: sticky;
  top: 0;
  z-index: 1030;
  padding-top: var(--sat);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--ts-line);
}
.ts-appbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 56px;
}
.ts-brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.03em;
  color: var(--ts-ink);
}
.ts-brand:hover { color: var(--ts-ink); }
.ts-brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: var(--ts-brand);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
}
.ts-appbar-tools { display: flex; align-items: center; gap: .6rem; }

/* ---- Desktop tab strip --------------------------------------------- */
.ts-desktop-nav .nav { gap: .15rem; }
.ts-desktop-nav .nav-link {
  color: var(--ts-muted);
  font-weight: 500;
  font-size: .84rem;
  border-radius: 999px;
  padding: .35rem .75rem;
  transition: background-color .15s ease, color .15s ease;
}
.ts-desktop-nav .nav-link:hover { color: var(--ts-ink); background: var(--ts-line-soft); }
.ts-desktop-nav .nav-link.active { color: var(--ts-brand); background: var(--ts-brand-2); }
.ts-desktop-nav .nav-link i { margin-right: .35rem; font-size: .85em; }

/* =====================================================================
   Page header (large title, iOS style)
   ===================================================================== */
.ts-main { padding-top: 1.5rem; padding-bottom: 2rem; }

.ts-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
}
.ts-title {
  margin: 0;
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.035em;
}
.ts-head-tools { margin-left: auto; display: flex; align-items: center; gap: .5rem; }

/* =====================================================================
   Surfaces
   ===================================================================== */
.ts-card {
  background: var(--ts-surface);
  border: 1px solid var(--ts-line);
  border-radius: var(--ts-radius);
  box-shadow: var(--ts-shadow);
  padding: 1.15rem 1.25rem;
}
.ts-card + .ts-card,
.ts-card + .ts-stack,
.ts-stack + .ts-card { margin-top: .85rem; }

.ts-section-title {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--ts-muted);
  font-weight: 600;
  margin-bottom: .85rem;
}

.ts-section-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  width: 100%;
  padding: 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
}
.ts-section-toggle:focus-visible { outline: 2px solid var(--ts-brand); outline-offset: 3px; }
.ts-section-toggle-end { display: inline-flex; align-items: center; gap: .5rem; }
.ts-section-toggle .ts-caret { transition: transform .2s ease; }
.ts-section-toggle.collapsed .ts-caret { transform: rotate(180deg); }

.ts-empty {
  text-align: center;
  color: var(--ts-muted);
  padding: 2.25rem 1rem;
}
.ts-empty i { color: var(--ts-brand); opacity: .8; }

.ts-note { font-size: .78rem; color: var(--ts-muted); margin: .85rem 0 0; }

/* =====================================================================
   Stat strip — three figures separated by hairlines
   ===================================================================== */
.ts-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.ts-stats > * + * { border-left: 1px solid var(--ts-line); }
.ts-stat {
  display: flex;
  flex-direction: column;
  gap: .1rem;
  padding: 0 .75rem;
  min-width: 0;
}
.ts-stats > .ts-stat:first-child { padding-left: 0; }
.ts-stats > .ts-stat:last-child  { padding-right: 0; }
.ts-stat .val {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}
.ts-stat .lbl { font-size: .74rem; color: var(--ts-muted); }

.text-pos { color: var(--ts-pos) !important; }
.text-neg { color: var(--ts-neg) !important; }

/* =====================================================================
   Avatars
   ===================================================================== */
.ts-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--ts-brand-2);
  color: var(--ts-brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: .8rem;
  flex: none;
  letter-spacing: 0;
}
.ts-avatar-sm { width: 30px; height: 30px; font-size: .72rem; }
.ts-avatar-lg { width: 56px; height: 56px; font-size: 1.35rem; }
.ts-avatar-btn { border: 0; padding: 0; cursor: pointer; }

/* =====================================================================
   Rows
   ===================================================================== */
.ts-row {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .8rem 0;
  border-top: 1px solid var(--ts-line-soft);
}
.ts-row:first-child { border-top: 0; padding-top: 0; }
.ts-row:last-child { padding-bottom: 0; }

/* Backwards-compatible aliases used across the pages. */
.ts-list-item { padding: .8rem 0; border-top: 1px solid var(--ts-line-soft); }
.ts-list-item:first-child { border-top: 0; padding-top: 0; }
.ts-list-item:last-child { padding-bottom: 0; }

/* ---- "Who pays who" transfer rows ---------------------------------- */
.ts-transfer {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .7rem 0;
  border-top: 1px solid var(--ts-line-soft);
}
.ts-transfer:first-child { border-top: 0; padding-top: 0; }
.ts-transfer:last-child { padding-bottom: 0; }
.ts-transfer-people {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: .45rem;
  flex: 1 1 auto;
  min-width: 0;
}
.ts-transfer-party {
  display: flex;
  align-items: center;
  gap: .4rem;
  flex: 1 1 0;
  min-width: 0;
}
.ts-transfer .fa-arrow-right-long { color: #c3c8cf; flex: none; font-size: .8rem; }
@media (min-width: 768px) {
  .ts-transfer-party { flex: 0 1 auto; }
  .ts-transfer-people { flex: 0 1 auto; }
}
.ts-transfer-amount {
  margin-left: auto;
  white-space: nowrap;
  flex: none;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* ---- Balance rows --------------------------------------------------- */
.ts-balance {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .75rem 0;
  border-top: 1px solid var(--ts-line-soft);
}
.ts-balance:first-child { border-top: 0; padding-top: 0; }
.ts-balance:last-child { padding-bottom: 0; }
.ts-balance-info { min-width: 0; flex: 1; }
.ts-balance-figures {
  display: flex;
  gap: .75rem;
  margin: .1rem 0 0;
  font-size: .78rem;
  color: var(--ts-muted);
  font-variant-numeric: tabular-nums;
}
.ts-balance-figures span { white-space: nowrap; }
.ts-balance-net {
  text-align: right;
  font-weight: 700;
  white-space: nowrap;
  flex: none;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.ts-balance-net small {
  display: block;
  font-size: .68rem;
  font-weight: 500;
  color: var(--ts-muted);
}

/* =====================================================================
   Tables (desktop only surfaces)
   ===================================================================== */
.table { --bs-table-border-color: var(--ts-line-soft); margin-bottom: 0; }
.table > thead th {
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  font-weight: 600;
  color: var(--ts-muted);
  border-bottom-color: var(--ts-line);
}
.table > tbody > tr:last-child > * { border-bottom-width: 0; }
.table td { font-variant-numeric: tabular-nums; }

/* =====================================================================
   Buttons
   ===================================================================== */
.btn {
  --bs-btn-font-weight: 600;
  border-radius: 12px;
  letter-spacing: -0.01em;
}
.btn-brand {
  background: var(--ts-brand);
  border-color: var(--ts-brand);
  color: #fff;
}
.btn-brand:hover, .btn-brand:focus, .btn-brand:active {
  background: var(--ts-brand-ink);
  border-color: var(--ts-brand-ink);
  color: #fff;
}
.btn-brand:focus-visible { box-shadow: 0 0 0 .2rem rgba(47, 111, 79, .25); }
.btn-soft {
  background: var(--ts-brand-2);
  color: var(--ts-brand);
  border: 0;
}
.btn-soft:hover { background: #dcebe2; color: var(--ts-brand-ink); }
.btn-danger {
  background: var(--ts-neg);
  border-color: var(--ts-neg);
}
.btn-danger:hover, .btn-danger:focus, .btn-danger:active {
  background: #a5462f;
  border-color: #a5462f;
}

/* Quiet, round icon buttons for row actions. */
.ts-icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--ts-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .82rem;
  flex: none;
  text-decoration: none;
  transition: background-color .15s ease, color .15s ease;
}
.ts-icon-btn:hover { background: var(--ts-line-soft); color: var(--ts-ink); }
.ts-icon-btn.is-danger:hover { background: #fbeeea; color: var(--ts-neg); }
.ts-row-actions { display: inline-flex; align-items: center; gap: .1rem; flex: none; }
.ts-row-actions form { display: inline-flex; }

/* Full-width primary action; only stretches edge to edge on phones. */
.ts-cta { width: 100%; padding-top: .7rem; padding-bottom: .7rem; }
@media (min-width: 768px) {
  .ts-cta { width: auto; min-width: 190px; padding-top: .55rem; padding-bottom: .55rem; }
}
.ts-login .ts-cta { width: 100%; }

/* =====================================================================
   Forms
   ===================================================================== */
.form-label {
  font-size: .78rem;
  font-weight: 500;
  color: var(--ts-muted);
  margin-bottom: .3rem;
}
.form-control, .form-select {
  border-radius: var(--ts-radius-sm);
  border-color: var(--ts-line);
  background-color: #fbfbfc;
  padding: .6rem .8rem;
  font-size: .95rem;
}
.form-select { padding-right: 2.4rem; }
.form-control:focus, .form-select:focus {
  background-color: var(--ts-surface);
  border-color: var(--ts-brand);
  box-shadow: 0 0 0 .18rem rgba(47, 111, 79, .13);
}
.form-control::placeholder { color: #aab0b9; opacity: 1; }
.input-group-text {
  border-radius: var(--ts-radius-sm);
  border-color: var(--ts-line);
  background: var(--ts-line-soft);
  color: var(--ts-muted);
  font-size: .9rem;
}
.form-check-input { border-color: #d3d7dd; }
.form-check-input:checked {
  background-color: var(--ts-brand);
  border-color: var(--ts-brand);
}
.form-check-input:focus {
  border-color: var(--ts-brand);
  box-shadow: 0 0 0 .18rem rgba(47, 111, 79, .13);
}
.form-switch .form-check-input { width: 2.35em; height: 1.3em; }

/* Selectable member chips (admin group editor). */
.ts-check-chip {
  display: flex;
  align-items: center;
  gap: .5rem;
  border: 1px solid var(--ts-line);
  border-radius: 999px;
  padding: .35rem .75rem;
  font-size: .85rem;
  cursor: pointer;
  background: var(--ts-surface);
  transition: border-color .15s ease, background-color .15s ease;
}
.ts-check-chip:has(input:checked) {
  border-color: var(--ts-brand);
  background: var(--ts-brand-2);
  color: var(--ts-brand-ink);
}
.ts-check-chip input { margin: 0; flex: none; }

/* =====================================================================
   Misc components
   ===================================================================== */
.progress { background: var(--ts-line-soft); border-radius: 999px; height: 8px; }
.progress-bar { background: var(--ts-brand); border-radius: 999px; }

.ts-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-weight: 600;
  font-size: .74rem;
  padding: .25rem .7rem;
  background: var(--ts-brand-2);
  color: var(--ts-brand);
  white-space: nowrap;
}
.ts-pill-dark { background: var(--ts-ink); color: #fff; }
.ts-pill.ts-head-tools { text-transform: uppercase; letter-spacing: .06em; }

.alert {
  border: 0;
  border-radius: var(--ts-radius-sm);
  font-size: .875rem;
  padding: .7rem .9rem;
}
.alert-success { background: var(--ts-brand-2); color: var(--ts-brand-ink); }
.alert-danger  { background: #fbeeea; color: #97402b; }

/* ---- Language switcher ---------------------------------------------- */
.ts-lang {
  display: inline-flex;
  gap: 2px;
  background: var(--ts-line-soft);
  border-radius: 999px;
  padding: 3px;
}
.ts-lang a {
  padding: .12rem .5rem;
  border-radius: 999px;
  font-size: .7rem;
  font-weight: 600;
  color: var(--ts-muted);
  line-height: 1.5;
}
.ts-lang a.active {
  background: var(--ts-surface);
  color: var(--ts-brand);
  box-shadow: 0 1px 2px rgba(0, 0, 0, .07);
}

/* =====================================================================
   Bottom sheet dialogs (Bootstrap modal, restyled)
   ===================================================================== */
.ts-sheet .modal-content {
  border: 0;
  border-radius: var(--ts-radius);
  box-shadow: 0 20px 50px rgba(16, 21, 27, .18);
}
.ts-sheet .modal-header {
  border-bottom: 1px solid var(--ts-line-soft);
  padding: 1rem 1.25rem;
}
.ts-sheet .modal-title { font-size: .95rem; font-weight: 700; letter-spacing: -0.02em; }
.ts-sheet .modal-body { padding: 1.15rem 1.25rem; }
.ts-sheet-grip { display: none; }

.ts-sheet-actions { display: flex; gap: .5rem; margin-top: 1.35rem; }
.ts-sheet-actions .btn { flex: 1; padding-top: .65rem; padding-bottom: .65rem; }
.ts-sheet-actions .btn-light {
  background: var(--ts-line-soft);
  border-color: var(--ts-line-soft);
  color: var(--ts-ink);
}
@media (min-width: 768px) {
  .ts-sheet-actions { justify-content: flex-end; }
  .ts-sheet-actions .btn { flex: 0 0 auto; min-width: 130px; }
}

@media (max-width: 767.98px) {
  .ts-sheet .modal-dialog {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
    margin: 0;
    min-height: 0;
    max-width: none;
    width: 100%;
  }
  .ts-sheet .modal-content {
    border-radius: 22px 22px 0 0;
    padding-bottom: var(--sab);
    max-height: 88vh;
  }
  .ts-sheet .modal-body { overflow-y: auto; }
  .ts-sheet.fade .modal-dialog {
    transform: translateY(100%);
    transition: transform .28s cubic-bezier(.32, .72, 0, 1);
  }
  .ts-sheet.show .modal-dialog { transform: none; }
  .ts-sheet-grip {
    display: block;
    width: 38px;
    height: 4px;
    border-radius: 999px;
    background: #dfe2e6;
    margin: .55rem auto -.25rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ts-sheet.fade .modal-dialog { transition: none; }
}

/* Chrome paints backdrop-filter layers above the modal backdrop, which would
   leave the frosted bars undimmed while a sheet is open. */
body.modal-open .ts-appbar,
body.modal-open .ts-tabbar {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* =====================================================================
   Bottom tab bar (phones only)
   ===================================================================== */
.ts-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  display: flex;
  height: calc(var(--ts-nav-h) + var(--sab));
  padding-bottom: var(--sab);
  background: rgba(255, 255, 255, .9);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-top: 1px solid var(--ts-line);
}
.ts-tabbar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--ts-muted);
  font-size: .66rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  min-width: 0;
}
.ts-tabbar a span {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 0 2px;
}
.ts-tabbar a i { font-size: 1.15rem; line-height: 1; }
.ts-tabbar a.active { color: var(--ts-brand); }
.ts-tabbar a:active { opacity: .55; }

/* The prominent centre action: only the label follows the active state. */
.ts-tabbar a.ts-fab { color: var(--ts-muted); }
.ts-tabbar a.ts-fab.active { color: var(--ts-brand); }
.ts-tabbar a.ts-fab i {
  background: var(--ts-brand);
  color: #fff;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  margin-top: -20px;
  box-shadow: 0 8px 18px rgba(47, 111, 79, .3);
}

@media (min-width: 768px) {
  .ts-tabbar { display: none; }
  body { padding-bottom: 0; }
}
@media (max-width: 767.98px) {
  .ts-desktop-nav { display: none !important; }
}

/* =====================================================================
   Phone layout — edge-to-edge sections, compact type
   ===================================================================== */
@media (max-width: 767.98px) {
  :root { --ts-radius: 16px; --ts-nav-h: 60px; }

  body { font-size: .925rem; }

  .ts-appbar-inner { min-height: 50px; padding-top: .3rem; padding-bottom: .3rem; }
  .ts-brand-name { font-size: .95rem; }

  .container.ts-page { padding-left: var(--ts-gutter); padding-right: var(--ts-gutter); }

  .ts-main { padding-top: 1.1rem; padding-bottom: 1.25rem; }
  .ts-title { font-size: 1.5rem; }
  .ts-head { margin-bottom: .85rem; }

  /* Sections run to the screen edges like a native list. */
  .ts-main > .ts-card {
    margin-left: calc(var(--ts-gutter) * -1);
    margin-right: calc(var(--ts-gutter) * -1);
    border-radius: 0;
    border-left: 0;
    border-right: 0;
    box-shadow: none;
    padding: 1rem var(--ts-gutter);
  }
  .ts-card + .ts-card { margin-top: .6rem; }

  .ts-section-title { font-size: .68rem; margin-bottom: .65rem; }
  .ts-stat .val { font-size: 1.15rem; }
  .ts-stat .lbl { font-size: .68rem; }
  .ts-stat { padding: 0 .5rem; }

  /* Keep 16px inputs so iOS never zooms on focus. */
  .form-control, .form-select { font-size: 16px; padding: .55rem .75rem; }
  .form-select { padding-right: 2.2rem; }
  .form-label { font-size: .74rem; }

  .ts-cta { padding-top: .8rem; padding-bottom: .8rem; font-size: .95rem; }
  .ts-sticky-cta {
    position: sticky;
    bottom: var(--ts-cta-bottom);
    z-index: 5;
  }

  .alert { margin-bottom: .7rem; }
}

/* =====================================================================
   Login screen
   ===================================================================== */
body.ts-login {
  padding-bottom: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  --ts-cta-bottom: calc(var(--sab) + 1rem);
}
.ts-login .ts-login-box { width: 100%; max-width: 380px; margin: 0 auto; padding: 2rem 1.25rem; }
.ts-login .ts-brand-mark { border-radius: 18px; }

@media (max-width: 767.98px) {
  body.ts-login { align-items: flex-start; }
  .ts-login .ts-login-box { padding-top: calc(var(--sat) + 2.5rem); }
}