/* ═══════════════════════════════════════════════════
   Kiska Kitna? — style.css
   Mobile-first, card-based, Indian-inspired palette
   ═══════════════════════════════════════════════════ */

/* ── Custom properties ──────────────────────────────── */
:root {
  --clr-primary:     #C2410C;
  --clr-primary-dk:  #9A3412;
  --clr-accent:      #16856B;
  --clr-bg:          #F5F7F4;
  --clr-surface:     #FFFFFF;
  --clr-text:        #17211C;
  --clr-muted:       #66716A;
  --clr-border:      #DDE3DE;
  --clr-error:       #B91C1C;
  --clr-settle-bg:   #ECFDF5;
  --clr-settle-bdr:  #6EE7B7;

  --radius-card: 12px;
  --radius-btn:  8px;
  --radius-input: 8px;

  --shadow-card: 0 8px 28px rgba(23,33,28,0.07);
  --shadow-btn:  0 5px 14px rgba(241,90,41,0.24);

  --font: 'Aptos', 'Segoe UI Variable', 'Trebuchet MS', sans-serif;
  --fw-normal: 400;
  --fw-medium: 500;
  --fw-bold:   700;
}

/* ── Reset & base ───────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Ensure [hidden] always wins over any display property in class rules */
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  min-height: 100vh;
  letter-spacing: 0;
}

body.modal-open { overflow: hidden; }

ul { list-style: none; }

.pwa-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
}

.connection-status {
  color: var(--clr-muted);
  font-size: 0.76rem;
}

.install-app-btn {
  min-height: 44px;
  color: inherit;
}

/* ── Container ──────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px 40px;
}

/* ═══════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════ */
.hero {
  position: relative;
  overflow: hidden;
  background: #17211C;
  min-height: 68svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
}

.hero::after {
  content: '';
  position: absolute;
  inset: auto 0 0;
  height: 5px;
  background: linear-gradient(90deg, #F15A29 0 33.33%, #FFFFFF 33.33% 66.66%, #16856B 66.66%);
}

.hero__inner { max-width: 480px; }

.hero__badge {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  color: #fff;
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero__title {
  font-size: clamp(2.8rem, 10vw, 4.5rem);
  font-weight: var(--fw-bold);
  color: #fff;
  line-height: 1.1;
  margin-bottom: 10px;
}

.hero__tagline {
  font-size: clamp(1rem, 4vw, 1.25rem);
  color: #FF875F;
  font-weight: var(--fw-medium);
  margin-bottom: 16px;
}

.hero__desc {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 36px;
}

/* ═══════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: var(--radius-btn);
  font-family: var(--font);
  font-weight: var(--fw-medium);
  font-size: 1rem;
  cursor: pointer;
  min-height: 46px;
  transition: background 0.18s, border-color 0.18s, box-shadow 0.18s, transform 0.1s, opacity 0.18s;
  padding: 12px 22px;
  touch-action: manipulation;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }
.btn:focus-visible,
.input:focus-visible,
.split-tab:focus-visible,
.payer-tab:focus-visible,
.charges-toggle:focus-visible,
.checkbox-item:has(input:focus-visible),
.payer-choice:has(input:focus-visible) {
  outline: 3px solid var(--clr-text);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px #fff;
}

.btn--primary {
  background: var(--clr-primary);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn--primary:hover { background: var(--clr-primary-dk); }

.btn--outline {
  background: transparent;
  color: var(--clr-primary);
  border: 2px solid var(--clr-primary);
  box-shadow: none;
}
.btn--outline:hover { background: #fff3ef; }

.btn--large { min-height: 54px; padding: 14px 28px; font-size: 1.05rem; }

.btn--ghost {
  background: transparent;
  color: var(--clr-muted);
  min-height: 44px;
  padding: 8px 10px;
  font-size: 0.85rem;
}
.btn--ghost:hover { color: var(--clr-error); background: #fef2f2; }

.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn:disabled:active { transform: none; }

/* ═══════════════════════════════════════════════════
   APP SECTION
   ═══════════════════════════════════════════════════ */
.app { position: relative; z-index: 1; padding-top: 28px; }

.group-home { min-height: 420px; }
.group-home__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.group-home__eyebrow {
  color: var(--clr-primary);
  font-size: 0.76rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
}
.group-home__header h2 { margin-top: 2px; font-size: 1.45rem; line-height: 1.25; }
.group-home__actions { display: flex; gap: 8px; }
.group-home__actions .btn { min-height: 44px; padding-inline: 14px; font-size: 0.86rem; }
.group-home__storage {
  width: fit-content;
  margin-bottom: 18px;
  padding: 8px 10px;
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  background: rgba(255,255,255,0.7);
}
.group-home__backup-status { margin: -10px 0 12px; }
.group-list { display: grid; gap: 10px; }
.group-list-item {
  overflow: hidden;
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  background: var(--clr-surface);
  box-shadow: 0 5px 18px rgba(23,33,28,0.05);
}
.group-list-item--active { border-color: #8DCAB9; box-shadow: 0 5px 18px rgba(22,133,107,0.09); }
.group-list-item--completed { border-left: 4px solid var(--clr-accent); }
.group-list-item--archived { background: #F8F9F8; box-shadow: none; }
.group-list-item--archived .group-list-item__icon { background: #ECEFED; }
.group-list-item--current { border-color: #8DCAB9; box-shadow: 0 5px 18px rgba(22,133,107,0.09); }
.group-list-item__open {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 84px;
  padding: 13px 14px;
  border: 0;
  background: transparent;
  color: var(--clr-text);
  font-family: var(--font);
  text-align: left;
  cursor: pointer;
}
.group-list-item__open:hover { background: #FAFBFA; }
.group-list-item__open:focus-visible { outline: 3px solid var(--clr-text); outline-offset: -3px; }
.group-list-item__icon {
  display: grid;
  place-items: center;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #FFF3EF;
  font-size: 1.15rem;
}
.group-list-item__content { display: flex; flex: 1; flex-direction: column; min-width: 0; }
.group-list-item__content strong { overflow: hidden; font-size: 0.98rem; text-overflow: ellipsis; white-space: nowrap; }
.group-list-item__content span { overflow-wrap: anywhere; color: var(--clr-muted); font-size: 0.82rem; }
.group-list-item__content small { color: var(--clr-muted); font-size: 0.72rem; }
.group-list-item__active {
  flex-shrink: 0;
  padding: 3px 7px;
  border-radius: 999px;
  background: #E8F7F1;
  color: var(--clr-accent);
  font-size: 0.68rem;
  font-weight: var(--fw-bold);
}
.group-list-item__arrow { flex-shrink: 0; color: var(--clr-primary); font-size: 1.2rem; }
.group-home__empty {
  padding: 38px 18px;
  border: 1px dashed var(--clr-border);
  border-radius: 10px;
  background: rgba(255,255,255,0.62);
  text-align: center;
}
.group-home__empty > span { display: block; margin-bottom: 8px; font-size: 2rem; }
.group-home__empty h3 { font-size: 1.05rem; }
.group-home__empty p { max-width: 360px; margin: 4px auto 18px; color: var(--clr-muted); font-size: 0.86rem; }
.group-section-title { margin-bottom: 8px; color: var(--clr-muted); font-size: 0.8rem; text-transform: uppercase; }
.archived-groups {
  margin-top: 18px;
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  background: rgba(255,255,255,0.62);
  overflow: hidden;
}
.archived-groups > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 10px 14px;
  color: var(--clr-muted);
  font-size: 0.86rem;
  font-weight: var(--fw-medium);
  cursor: pointer;
  list-style: none;
}
.archived-groups > summary::-webkit-details-marker { display: none; }
.archived-groups[open] > summary > span:last-child { transform: rotate(180deg); }
.archived-group-list { padding: 0 10px 10px; }

.group-readonly-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 12px;
  padding: 10px 12px;
  border: 1px solid #C9D1CC;
  border-radius: 8px;
  background: #F5F7F5;
}
.group-readonly-note > span:last-child { display: flex; flex-direction: column; min-width: 0; }
.group-readonly-note strong { font-size: 0.84rem; }
.group-readonly-note small { color: var(--clr-muted); font-size: 0.74rem; }
.lifecycle-action { color: var(--clr-accent); }

.active-group-bar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding: 9px 10px;
  border: 1px solid #B9DCCF;
  border-radius: 10px;
  background: #F3FAF7;
}
.active-group-bar__back { color: var(--clr-accent); }
.active-group-bar__identity { display: flex; flex-direction: column; min-width: 0; }
.active-group-bar__identity small { color: var(--clr-muted); font-size: 0.68rem; text-transform: uppercase; }
.active-group-bar__identity strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.active-group-bar__actions { display: flex; gap: 2px; }
.active-group-bar__actions .btn { min-height: 44px; padding-inline: 9px; }
.active-group-bar__actions .btn--danger { color: var(--clr-error); }

.group-editor-overlay { align-items: center; padding: 16px; }
.group-editor {
  width: min(100%, 420px);
  padding: 22px;
  border-radius: 10px;
  background: var(--clr-surface);
  box-shadow: 0 20px 60px rgba(23,33,28,0.22);
}
.group-editor h3 { font-size: 1.15rem; }
.group-editor > p:first-of-type { margin: 4px 0 18px; color: var(--clr-muted); font-size: 0.86rem; }
.group-editor .error-msg { margin: 5px 0 8px; }
.group-editor__actions { display: flex; justify-content: flex-end; gap: 10px; }

@media (max-width: 620px) {
  .group-home__header { align-items: stretch; flex-direction: column; }
  .group-home__actions { display: grid; grid-template-columns: 1fr 1fr; }
  .group-home__actions .btn--primary { grid-column: 1 / -1; }
  .active-group-bar { grid-template-columns: auto minmax(0, 1fr); }
  .active-group-bar__actions { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #CFE7DF; padding-top: 8px; }
}

@media (max-width: 360px) {
  .group-list-item__open { gap: 9px; padding-inline: 11px; }
  .group-list-item__icon { display: none; }
  .active-group-bar__back { padding-inline: 7px; }
  .active-group-bar__actions .btn { font-size: 0.78rem; padding-inline: 5px; }
}

.session-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  padding: 10px 12px;
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  background: rgba(255,255,255,0.92);
  box-shadow: 0 4px 16px rgba(23,33,28,0.05);
}
.local-storage-note { display: flex; align-items: center; gap: 9px; min-width: 0; color: var(--clr-accent); }
.local-storage-note > span:last-child { display: flex; flex-direction: column; min-width: 0; }
.local-storage-note strong { color: var(--clr-text); font-size: 0.82rem; line-height: 1.25; }
.local-storage-note small { color: var(--clr-muted); font-size: 0.7rem; line-height: 1.3; }
.reset-group-btn { flex-shrink: 0; color: var(--clr-error); font-size: 0.8rem; }
.reset-group-btn:hover { color: #B91C1C; }

.backup-panel {
  margin-bottom: 16px;
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  background: rgba(255,255,255,0.78);
  overflow: hidden;
}
.backup-panel > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 10px 14px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.backup-panel > summary::-webkit-details-marker { display: none; }
.backup-panel > summary > span:first-child { display: flex; flex-direction: column; min-width: 0; }
.backup-panel > summary strong { color: var(--clr-text); font-size: 0.88rem; }
.backup-panel > summary small { color: var(--clr-muted); font-size: 0.72rem; }
.backup-panel__chevron { color: var(--clr-muted); transition: transform 0.18s; }
.backup-panel[open] .backup-panel__chevron { transform: rotate(180deg); }
.backup-panel__body { padding: 12px 14px 14px; border-top: 1px solid var(--clr-border); }
.backup-panel__body > p { color: var(--clr-muted); font-size: 0.78rem; line-height: 1.45; }
.backup-panel__actions { display: flex; gap: 10px; margin-top: 12px; }
.backup-panel__actions .btn { flex: 1; font-size: 0.86rem; }
.backup-panel__status { min-height: 1.15rem; margin-top: 8px; }
.backup-panel__status--error { color: var(--clr-error) !important; }
.backup-panel__status--success { color: var(--clr-accent) !important; }

/* ── Cards ──────────────────────────────────────────── */
.card {
  background: var(--clr-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
  margin-bottom: 16px;
  border: 1px solid var(--clr-border);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.card__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.08rem;
  font-weight: var(--fw-bold);
  color: var(--clr-text);
  margin-bottom: 16px;
}

#groupCard .card__title::before,
#peopleCard .card__title::before,
#expensesCard .card__title::before,
#settlementCard > .card__title::before {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #fff;
  background: var(--clr-text);
  font-size: 0.72rem;
  line-height: 1;
}
#groupCard .card__title::before { content: '1'; }
#peopleCard .card__title::before { content: '2'; }
#expensesCard .card__title::before { content: '3'; }
#settlementCard > .card__title::before { content: '4'; background: var(--clr-accent); }

/* Remove bottom margin when header is used */
.card__header .card__title { margin-bottom: 0; }

.card--settlement {
  background: var(--clr-surface);
  border: 1px solid #B9DCCF;
  border-top: 4px solid var(--clr-accent);
  box-shadow: 0 12px 34px rgba(22,133,107,0.11);
}

/* ── Inputs ─────────────────────────────────────────── */
.input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-input);
  font-family: var(--font);
  font-size: 1rem;
  color: var(--clr-text);
  background: #fff;
  transition: border-color 0.18s, box-shadow 0.18s;
  -webkit-appearance: none;
  appearance: none;
}

.input:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(255,107,53,0.15);
}

.input::placeholder { color: #9CA3AF; }

/* ── Add-person row ─────────────────────────────────── */
.add-row {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.add-row .input { flex: 1; }
.add-row .btn { flex-shrink: 0; }

/* ── Error message ──────────────────────────────────── */
.error-msg {
  font-size: 0.82rem;
  color: var(--clr-error);
  min-height: 1.2em;
  margin-bottom: 12px;
}

/* ── People list ────────────────────────────────────── */
.people-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  max-height: 420px;
  overflow-y: auto;
  scrollbar-gutter: stable;
}

.person-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #F9FAFB;
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  padding: 10px 14px;
  animation: fadeSlideIn 0.2s ease;
}

.person-item__name {
  font-weight: var(--fw-medium);
  font-size: 0.95rem;
  min-width: 0;
  overflow-wrap: anywhere;
}

.past-members {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 12px;
  padding: 10px 12px;
  border: 1px solid #F4C7B8;
  border-radius: 8px;
  background: #FFF8F5;
  color: var(--clr-muted);
  font-size: 0.8rem;
  overflow-wrap: anywhere;
}
.past-members strong { color: var(--clr-text); font-size: 0.82rem; }

/* ── Expense list (placeholder for later) ────────────── */
.expense-list { display: flex; flex-direction: column; gap: 10px; }

/* ── Empty states ───────────────────────────────────── */
.empty-state {
  text-align: center;
  color: var(--clr-muted);
  font-size: 0.9rem;
  padding: 22px 14px;
  border: 1px dashed var(--clr-border);
  border-radius: 10px;
  background: #FAFBFA;
}

.empty-state__icon {
  display: block;
  font-size: 2rem;
  margin-bottom: 8px;
}

/* ── #groupCard input spacing ───────────────────────── */
#groupCard .card__title { margin-bottom: 12px; }

/* ═══════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════ */
.footer {
  text-align: center;
  color: var(--clr-muted);
  font-size: 0.8rem;
  padding: 0 16px 32px;
}

/* ═══════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════ */
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE — tablet & desktop
   ═══════════════════════════════════════════════════ */
@media (min-width: 480px) {
  .container { padding: 0 24px 48px; }
  .card { padding: 24px 28px; }
}

@media (min-width: 768px) {
  .hero__title { font-size: 4.5rem; }
  .container { padding: 0 32px 56px; }
}

/* ═══════════════════════════════════════════════════
   MODAL — bottom-sheet on mobile, centred on desktop
   ═══════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 900;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--clr-surface);
  border-radius: 16px 16px 0 0;
  width: 100%;
  max-width: 580px;
  max-height: 100svh;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.28s cubic-bezier(0.32,0.72,0,1);
}

@media (min-width: 600px) {
  .modal-overlay { align-items: center; }
  .modal { border-radius: 12px; max-height: 90vh; }
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--clr-border);
  flex-shrink: 0;
}

.modal__title {
  font-size: 1.1rem;
  font-weight: var(--fw-bold);
}

.modal__close { min-width: 44px; font-size: 1.1rem; padding: 6px 10px; }

.modal__body {
  overflow-y: auto;
  padding: 18px 20px;
  flex: 1;
  overscroll-behavior: contain;
  scroll-padding-bottom: 96px;
  -webkit-overflow-scrolling: touch;
}

.modal__footer {
  display: flex;
  gap: 10px;
  padding: 14px 20px max(20px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--clr-border);
  flex-shrink: 0;
}

.modal__footer .btn { flex: 1; }

@media (max-width: 599px) {
  .modal__header { padding: 14px 16px 10px; }
  .modal__body { padding: 16px; }
  .modal__footer { padding: 10px 16px max(12px, env(safe-area-inset-bottom)); background: var(--clr-surface); }
  .modal__footer .btn--outline { flex: 0 0 auto; padding-inline: 14px; }
  .modal__footer .btn--primary { min-height: 50px; }
}

.confirm-overlay { align-items: center; padding: 20px; }
.confirm-dialog {
  width: min(100%, 440px);
  padding: 24px;
  border-radius: 12px;
  background: var(--clr-surface);
  box-shadow: 0 20px 60px rgba(23,33,28,0.22);
  animation: fadeSlideIn 0.18s ease;
}
.confirm-dialog__icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: #FEF2F2;
  color: var(--clr-error);
  font-weight: var(--fw-bold);
}
.confirm-dialog__title { font-size: 1.12rem; line-height: 1.35; }
.confirm-dialog__message { margin-top: 8px; color: var(--clr-muted); font-size: 0.9rem; line-height: 1.55; }
.confirm-dialog__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; margin-top: 22px; }
.btn--danger-solid { background: #B91C1C; color: #fff; }
.btn--danger-solid:hover { background: #DC2626; }

/* ── Form groups ──────────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-group--primary { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: var(--fw-medium);
  color: var(--clr-muted);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.form-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 7px;
}

.form-label-row .form-label { margin-bottom: 0; }

/* ── Amount prefix ────────────────────────────────── */
.input-prefix-wrap {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-input);
  overflow: hidden;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.input-prefix-wrap:focus-within {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(255,107,53,0.15);
}

.input-prefix {
  padding: 12px 12px 12px 14px;
  font-size: 1.05rem;
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  background: #fff8f5;
  border-right: 1.5px solid var(--clr-border);
  user-select: none;
}

.input--prefixed {
  border: none;
  border-radius: 0;
  flex: 1;
}

.input--prefixed:focus { box-shadow: none; }

.amount-input-wrap { border-width: 2px; }
.amount-input-wrap .input-prefix {
  padding-block: 14px;
  font-size: 1.35rem;
}
.amount-input-wrap .input {
  min-width: 0;
  padding-block: 13px;
  font-size: 1.45rem;
  font-weight: var(--fw-bold);
  font-variant-numeric: tabular-nums;
}

.field-error {
  min-height: 1.25rem;
  margin-top: 4px;
  color: var(--clr-error);
  font-size: 0.78rem;
  line-height: 1.35;
}
.input[aria-invalid="true"],
.input-prefix-wrap:has(.input[aria-invalid="true"]) { border-color: var(--clr-error); }

/* ── Select ───────────────────────────────────────── */
.select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7280' stroke-width='1.8' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
  cursor: pointer;
}

/* ── Checkboxes ───────────────────────────────────── */
.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 180px;
  overflow-y: auto;
}

.selection-summary {
  margin-top: 8px;
  color: var(--clr-muted);
  font-size: 0.82rem;
  font-weight: var(--fw-medium);
}
.select-all-btn { color: var(--clr-primary); }

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #F9FAFB;
  border: 1.5px solid var(--clr-border);
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  user-select: none;
}

.checkbox-item:has(input:checked) {
  border-color: var(--clr-primary);
  background: #fff8f5;
}

.checkbox-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--clr-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox-item__name { font-weight: var(--fw-medium); font-size: 0.95rem; }
.checkbox-item__name { min-width: 0; overflow-wrap: anywhere; }
.checkbox-item__name small { display: block; color: var(--clr-muted); font-size: 0.72rem; font-weight: var(--fw-normal); }

/* ── Split type tabs ──────────────────────────────── */
.split-tabs {
  display: flex;
  gap: 8px;
}

.split-tab {
  flex: 1;
  min-height: 44px;
  padding: 10px;
  border: 2px solid var(--clr-border);
  border-radius: 10px;
  background: #F9FAFB;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: all 0.15s;
  color: var(--clr-muted);
}

.split-tab--active {
  border-color: var(--clr-primary);
  background: #fff3ef;
  color: var(--clr-primary);
}

/* ── Share rows (equal preview and custom inputs) ─── */
.share-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 12px;
  background: #F9FAFB;
  border: 1px solid var(--clr-border);
  border-radius: 9px;
  margin-bottom: 7px;
  font-size: 0.9rem;
}

.share-row__name { font-weight: var(--fw-medium); flex: 1; min-width: 0; overflow-wrap: anywhere; }
.share-row__amount { color: var(--clr-primary); font-weight: var(--fw-bold); }

.share-row .input {
  width: 100px;
  padding: 7px 10px;
  font-size: 0.9rem;
  text-align: right;
}

.modal-error { margin-top: 4px; }

.split-progress {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 12px;
  margin-top: 9px;
  padding: 9px 11px;
  border-radius: 8px;
  background: #F3F4F6;
  color: var(--clr-muted);
  font-size: 0.8rem;
  line-height: 1.35;
}
.split-progress--ok { background: #ECFDF5; color: #08745D; }
.split-progress--pending strong { color: var(--clr-error); }

.expense-review {
  margin: 4px 0 18px;
  padding: 14px;
  border: 1px solid #BBDDD4;
  border-left: 4px solid var(--clr-accent);
  border-radius: 8px;
  background: #F3FAF7;
}
.expense-review__eyebrow {
  margin-bottom: 6px;
  color: var(--clr-accent);
  font-size: 0.75rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
}
.expense-review__headline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}
.expense-review__headline strong:first-child { min-width: 0; overflow-wrap: anywhere; }
.expense-review__headline strong:last-child { flex-shrink: 0; color: var(--clr-accent); font-size: 1.1rem; }
.expense-review > p:not(.expense-review__eyebrow) { color: var(--clr-muted); font-size: 0.82rem; line-height: 1.45; }

/* ── Small button variant ─────────────────────────── */
.btn--sm { min-height: 44px; padding: 7px 12px; font-size: 0.82rem; }

/* ═══════════════════════════════════════════════════
   EXPENSE CARDS
   ═══════════════════════════════════════════════════ */
.expense-list { display: flex; flex-direction: column; gap: 12px; margin-top: 4px; }

.expense-history-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}

.expense-history-controls[hidden] { display: none; }
.expense-history-controls p { margin: 0; color: var(--clr-text-muted); font-size: 0.9rem; }

@media (max-width: 479px) {
  .expense-history-controls { align-items: stretch; flex-direction: column; }
  .expense-history-controls .btn { width: 100%; }
}

.expense-card {
  border: 1.5px solid var(--clr-border);
  border-radius: 10px;
  padding: 16px;
  animation: fadeSlideIn 0.22s ease;
  background: #fff;
}

.expense-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.expense-card__header > div:first-child { flex: 1; min-width: 0; }

.expense-card__name {
  font-size: 1rem;
  font-weight: var(--fw-bold);
  color: var(--clr-text);
  overflow-wrap: anywhere;
}

.expense-card__amount {
  display: block;
  font-size: 1.15rem;
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  margin-top: 2px;
  overflow-wrap: anywhere;
}

.expense-card__actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.expense-card__actions .btn--ghost { padding: 6px 8px; font-size: 1rem; }
.expense-card__actions .btn--ghost { width: 44px; min-height: 44px; }
.btn--danger { color: var(--clr-error) !important; }
.btn--danger:hover { background: #fef2f2 !important; }

/* Confirm-delete state on the button */
.btn--confirm {
  background: var(--clr-error) !important;
  color: #fff !important;
  width: auto !important;
  min-width: 56px;
  border-radius: 8px;
  font-size: 0.78rem;
  padding: 6px 8px;
}

.expense-card__payer {
  font-size: 0.85rem;
  color: var(--clr-muted);
  margin-bottom: 8px;
}

.expense-card__shares-title {
  font-size: 0.8rem;
  font-weight: var(--fw-medium);
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: 0;
  margin-bottom: 5px;
}

.expense-card__share-list { display: flex; flex-direction: column; gap: 4px; }

.expense-card__share-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  padding: 4px 0;
  border-bottom: 1px dashed var(--clr-border);
}

.expense-card__share-item:last-child { border-bottom: none; }
.expense-card__share-item span:last-child { font-weight: var(--fw-medium); color: var(--clr-text); }

/* ── Expenses empty state refinement ──────────────── */
#expensesEmptyState { padding: 28px 14px; }

/* ═══════════════════════════════════════════════════
   TOAST NOTIFICATION
   ═══════════════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #1C1C2E;
  color: #fff;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: var(--fw-medium);
  z-index: 9999;
  width: max-content;
  max-width: calc(100vw - 32px);
  text-align: center;
  white-space: normal;
  transition: transform 0.3s cubic-bezier(0.32,0.72,0,1), opacity 0.3s;
  opacity: 0;
  pointer-events: none;
}

.toast--show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ═══════════════════════════════════════════════════
   ANIMATIONS (extended)
   ═══════════════════════════════════════════════════ */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ═══════════════════════════════════════════════════
   CHARGES SECTION
   ═══════════════════════════════════════════════════ */
.charges-toggle {
  width: 100%;
  min-height: 44px;
  text-align: left;
  background: transparent;
  border: 1.5px dashed var(--clr-border);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--clr-primary);
  font-family: var(--font);
  font-weight: var(--fw-medium);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.charges-toggle:hover { background: #fff8f5; border-color: var(--clr-primary); }

.charges-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.charge-field .form-label { margin-bottom: 5px; }

/* ── Amount breakdown ─────────────────────────────── */
.breakdown-box {
  background: #fafafa;
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 4px;
}
.breakdown-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  padding: 3px 0;
  color: var(--clr-text);
}
.breakdown-total {
  border-top: 1px solid var(--clr-border);
  margin-top: 6px;
  padding-top: 7px;
  font-weight: var(--fw-bold);
  font-size: 0.95rem;
  color: var(--clr-primary);
}

/* ── Expense card breakdown (collapsible) ─────────── */
.card-breakdown {
  margin-top: 8px;
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 0.82rem;
}
.card-breakdown summary {
  min-height: 44px;
  padding: 7px 12px;
  display: flex;
  align-items: center;
  color: var(--clr-muted);
  cursor: pointer;
  background: #f9f9f9;
  user-select: none;
  list-style: none;
}
.card-breakdown summary::-webkit-details-marker { display: none; }
.card-breakdown summary::before { content: '\25B6\00A0'; font-size: 0.65rem; }
.card-breakdown[open] summary::before { content: '\25BC\00A0'; }
.card-breakdown .breakdown-row {
  font-size: 0.82rem;
  padding: 3px 12px;
}
.card-breakdown .breakdown-total {
  padding: 6px 12px;
  margin-top: 3px;
}

/* ═══════════════════════════════════════════════════
   WHO PAID — payer mode
   ═══════════════════════════════════════════════════ */
.payer-mode-tabs {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.payer-select { display: none; }
.payer-choice-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  max-height: 190px;
  overflow-y: auto;
  padding: 2px;
}
.payer-choice {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
  min-height: 46px;
  padding: 9px 11px;
  border: 1.5px solid var(--clr-border);
  border-radius: 8px;
  background: #F9FAFB;
  cursor: pointer;
}
.payer-choice:has(input:checked) { border-color: var(--clr-primary); background: #FFF3EF; color: var(--clr-primary); }
.payer-choice input { width: 18px; height: 18px; margin-right: 8px; accent-color: var(--clr-primary); flex-shrink: 0; }
.payer-choice span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.88rem; font-weight: var(--fw-medium); }

.payer-tab {
  flex: 1;
  min-height: 44px;
  padding: 9px 10px;
  border: 2px solid var(--clr-border);
  border-radius: 10px;
  background: #F9FAFB;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: all 0.15s;
  color: var(--clr-muted);
}

.payer-tab--active {
  border-color: var(--clr-primary);
  background: #fff3ef;
  color: var(--clr-primary);
}

.payer-input-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: #F9FAFB;
  border: 1px solid var(--clr-border);
  border-radius: 9px;
  padding: 9px 12px;
}

.payer-input-name {
  font-weight: var(--fw-medium);
  font-size: 0.9rem;
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
}

@media (min-width: 480px) {
  .payer-choice-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.payer-actions-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.payer-total {
  font-size: 0.9rem;
  font-weight: var(--fw-bold);
  margin-top: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  min-height: 2rem;
}

.payer-total--ok  { background: #ecfdf5; color: #059669; }
.payer-total--err { background: #fef2f2; color: #dc2626; }

.switch-confirm {
  background: #fffbeb;
  border: 1px solid #fbbf24;
  border-radius: 10px;
  padding: 12px 14px;
  margin-top: 10px;
}

.switch-confirm p { font-size: 0.875rem; margin-bottom: 10px; color: var(--clr-text); }
.switch-confirm-btns { display: flex; gap: 8px; }

/* Expense card payments */
.expense-card__payments {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 4px;
}

.expense-card__payer-label {
  font-size: 0.8rem;
  font-weight: var(--fw-medium);
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: 0;
  margin-bottom: 4px;
}

/* ═══════════════════════════════════════════════════
   SETTLEMENT ENGINE
   ═══════════════════════════════════════════════════ */
.settlement-subtitle {
  font-size: 0.9rem;
  font-weight: var(--fw-bold);
  color: var(--clr-text);
  margin-bottom: 10px;
  margin-top: 16px;
}
.settlement-subtitle:first-child { margin-top: 0; }

.settlement-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}
.settlement-overview div {
  display: flex;
  flex-direction: column;
  padding: 10px 12px;
  background: #F6FAF8;
  border: 1px solid var(--clr-settle-bdr);
  border-radius: 10px;
}
.settlement-overview span { color: var(--clr-muted); font-size: 0.75rem; }
.settlement-overview strong { font-size: 0.95rem; }

.settlement-headline {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  color: #075E4B;
  background: #E7F6F0;
  border-radius: 10px;
}
.settlement-headline span { font-size: 0.82rem; }

/* Balance cards */
.balance-card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 7px;
  border: 1.5px solid;
}
.balance-grid { display: grid; gap: 8px; }
.balance-grid .balance-card { margin-bottom: 0; min-width: 0; }
.balance-receives { background: #ecfdf5; border-color: #6ee7b7; }
.balance-owes     { background: #fef2f2; border-color: #fca5a5; }
.balance-settled  { background: #f9fafb; border-color: #e5e7eb; }

.balance-name   { font-weight: var(--fw-bold); font-size: 0.9rem; }
.balance-name { overflow-wrap: anywhere; }
.past-member-badge {
  display: inline-block;
  margin-left: 5px;
  padding: 2px 6px;
  border-radius: 999px;
  background: #F3F4F6;
  color: var(--clr-muted);
  font-size: 0.66rem;
  font-weight: var(--fw-medium);
  vertical-align: middle;
}
.balance-detail { display: flex; flex-wrap: wrap; gap: 2px 14px; font-size: 0.78rem; color: var(--clr-muted); margin-top: 1px; }
.balance-status { font-weight: var(--fw-bold); font-size: 0.88rem; margin-top: 4px; }
.balance-receives .balance-status { color: #059669; }
.balance-owes     .balance-status { color: #dc2626; }
.balance-settled  .balance-status { color: var(--clr-muted); }

/* Transaction cards */
.settlement-tx {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: 8px;
  border-left: 4px solid var(--clr-primary);
  margin-bottom: 8px;
}
.settlement-tx-label  { min-width: 0; overflow-wrap: anywhere; font-weight: var(--fw-bold); font-size: 0.95rem; flex: 1; }
.settlement-tx-amount { font-weight: var(--fw-bold); font-size: 1.08rem; color: var(--clr-primary); white-space: nowrap; }

.settlement-all-clear {
  text-align: center;
  display: flex;
  flex-direction: column;
  padding: 16px 12px;
  background: #d1fae5;
  border-radius: 10px;
  font-size: 1rem;
  color: #059669;
  font-weight: var(--fw-medium);
}
.settlement-tx-count {
  font-size: 0.82rem;
  color: var(--clr-muted);
  margin-bottom: 12px;
}

.settlement-share {
  margin-top: 20px;
  padding-top: 2px;
  border-top: 1px solid #B9DCCF;
}
.settlement-share__actions { display: flex; gap: 10px; }
.settlement-share__actions .btn { flex: 1; min-height: 48px; }
.btn--whatsapp { background: #0D713B; color: #fff; }
.btn--whatsapp:hover { background: #095C30; }
.btn--copy { background: #fff; color: var(--clr-text); border: 1.5px solid var(--clr-border); }
.btn--copy:hover { background: #f9fafb; }

@media (max-width: 479px) {
  .settlement-overview { grid-template-columns: 1fr; }
  .settlement-share__actions { flex-direction: column; }
  .settlement-share__actions .btn { width: 100%; }
  .add-row { align-items: stretch; }
  .add-row .btn { padding-inline: 14px; }
  .settlement-tx { align-items: flex-start; flex-direction: column; gap: 3px; }
  .session-tools { align-items: stretch; flex-direction: column; }
  .reset-group-btn { width: 100%; border-top: 1px solid var(--clr-border); border-radius: 0; }
  .backup-panel__actions { flex-direction: column; }
  .backup-panel__actions .btn { width: 100%; }
}

@media (min-width: 600px) {
  .balance-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}