/* ---------- Landing ---------- */
.hero { padding: 28px 0 8px; max-width: 640px; }
.hero__title { font-size: clamp(30px, 8vw, 46px); margin: 14px 0 12px; letter-spacing: -.03em; }
.hero__lead { color: var(--c-muted); font-size: 16px; }
.hero__cta { margin: 18px 0; max-width: 460px; }
.hero__join { display: flex; gap: 8px; max-width: 460px; }
.features { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 28px; }
@media (min-width: 640px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .features { grid-template-columns: repeat(3, 1fr); } }
.feature__icon { font-size: 26px; margin-bottom: 6px; }
.feature h3 { margin-bottom: 4px; }

/* ---------- Dashboard ---------- */
.hero-balance { background: linear-gradient(135deg, #2a2560, #17172b); color: #fff; border-radius: var(--r-lg); padding: 18px; }
.hero-balance__label { font-size: var(--fs-xs); opacity: .75; display: block; }
.hero-balance__value { font-size: 32px; font-weight: 800; letter-spacing: -.02em; margin: 2px 0 12px; }
.hero-balance__split { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; border-top: 1px solid rgba(255,255,255,.15); padding-top: 10px; }
.hero-balance__split b { font-size: 16px; }
.quick-actions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 14px; }
.quick-actions__item { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 12px 4px; background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-md); font-size: 12px; font-weight: 700; color: var(--c-ink); text-align: center; }
.quick-actions__item span { font-size: 20px; }
.quick-actions__item:hover { text-decoration: none; border-color: var(--c-accent); }

/* ---------- Group ---------- */
.back-link { display: inline-flex; align-items: center; min-height: 32px; font-weight: 700; font-size: var(--fs-sm); margin-bottom: 4px; }
.group-head__emoji { width: 52px; height: 52px; font-size: 26px; border-radius: 16px; }
.group-head__name { font-size: 21px; margin: 0; }
.group-actions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 14px; }
@media (min-width: 640px) { .group-actions { grid-template-columns: repeat(4, 1fr); } }
.group-actions .btn { white-space: normal; text-align: center; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.filter-bar .input[type=search] { flex: 1 1 220px; }
.filter-bar select.input { flex: 0 1 180px; }
.day-head { display: flex; justify-content: space-between; font-size: var(--fs-xs); font-weight: 700; color: var(--c-muted); text-transform: capitalize; margin: 16px 4px 6px; }
.expense-item .list__sub .chip { margin-left: 4px; }
.balance-hero { border-radius: var(--r-lg); padding: 16px; background: var(--c-surface-2); }
.balance-hero--pos { background: var(--c-pos-soft); color: var(--c-pos); }
.balance-hero--neg { background: var(--c-neg-soft); color: var(--c-neg); }
.suggest { flex-wrap: wrap; }
.suggest__actions { margin-left: auto; display: flex; gap: 6px; }
.invite-card h3 { margin-bottom: 2px; }
.copy-row { display: flex; gap: 8px; margin-top: 8px; }
.copy-row .input { flex: 1; min-width: 0; font-size: 16px; } /* ≥16px: iOS would zoom on focus */
.member { align-items: flex-start; }
.divider { display: flex; align-items: center; gap: 10px; margin: 20px 0 12px; color: var(--c-muted); font-size: var(--fs-xs); font-weight: 700; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--c-line); }
.type-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.type-grid__item { position: relative; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 10px 4px; border: 1.5px solid var(--c-line-2); border-radius: var(--r-md); cursor: pointer; background: var(--c-surface); font-size: 22px; }
.type-grid__item small { font-size: 11.5px; font-weight: 700; color: var(--c-muted); }
.type-grid__item input { position: absolute; opacity: 0; }
.type-grid__item:has(input:checked) { border-color: var(--c-accent); background: var(--c-accent-soft); }
.type-grid__item:has(input:checked) small { color: var(--c-accent); }
.family-rows { display: flex; flex-direction: column; gap: 8px; }
.family-row { display: grid; grid-template-columns: 1fr 140px; gap: 8px; }

/* ---------- Expense form ---------- */
.amount-row { display: grid; grid-template-columns: 1fr 96px; gap: 8px; }
.fx-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; margin-top: 10px; padding: 10px; background: var(--c-surface-2); border-radius: var(--r-md); }
.fx-row__rate { width: 130px; min-height: 38px; }
.fx-row__src { flex-basis: 100%; }
.split-row { display: flex; align-items: center; gap: 10px; padding: 9px 0; border-top: 1px solid var(--c-line); }
.split-row:first-child { border-top: 0; }
.split-row__check { width: 22px; height: 22px; accent-color: var(--c-accent); flex-shrink: 0; }
.split-row__value { width: 110px; min-height: 38px; text-align: right; padding: 6px 10px; }
.split-row__share { min-width: 84px; text-align: right; font-weight: 700; font-size: var(--fs-sm); }
.split-row--off { opacity: .55; }
.participants[data-mode=Equal] .split-row__value { display: none; }
.sum-line { display: flex; justify-content: space-between; font-size: var(--fs-sm); font-weight: 700; padding-top: 8px; border-top: 1px dashed var(--c-line-2); margin-top: 4px; }
.sum-line:empty { display: none; }
.quick-pick { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.sponsor__box { border: 1.5px solid color-mix(in srgb, var(--c-warn) 40%, var(--c-line-2)); background: var(--c-warn-soft); border-radius: var(--r-md); padding: 12px; }
.form-actions { display: flex; gap: 8px; margin-top: 16px; position: sticky; bottom: calc(var(--nav-h) + 8px); z-index: 5; }
.form-actions > * { flex: 1; }
.form-actions form .btn { width: 100%; }
@media (min-width: 1024px) { .form-actions { bottom: 12px; } }
[hidden] { display: none !important; }
@media (max-width: 420px) {
  .split-row__value { width: 88px; }
  .split-row__share { min-width: 70px; }
  .family-row { grid-template-columns: 1fr 120px; }
}

/* ---------- Expense details ---------- */
.expense-head { text-align: center; }
.expense-head__icon { font-size: 40px; }
.expense-head h1 { font-size: 20px; }
.creator { margin-top: 12px; }
.photo--lg { width: 110px; height: 110px; }
.photo-wrap { display: flex; flex-direction: column; align-items: center; gap: 4px; }

/* ---------- Pay ---------- */
.pay { text-align: center; }
.pay__qr { width: 240px; height: auto; margin: 14px auto 6px; border-radius: var(--r-md); background: #fff; padding: 8px; border: 1px solid var(--c-line); }
.pay__info { text-align: left; margin-top: 10px; border: 1px solid var(--c-line); border-radius: var(--r-md); }

/* ---------- Join ---------- */
.join { text-align: center; }
.join__emoji { font-size: 44px; }

/* ---------- Debts ---------- */
.debt-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.debt-summary__item { border-radius: var(--r-lg); padding: 14px; display: flex; flex-direction: column; gap: 2px; }
.debt-summary__item .amount { font-size: 20px; }
.debt-summary__item--pos { background: var(--c-pos-soft); color: var(--c-pos); }
.debt-summary__item--neg { background: var(--c-neg-soft); color: var(--c-neg); }

/* ---------- Profile ---------- */
.profile-head { display: flex; align-items: center; gap: 14px; }
.profile-head__name { font-size: 18px; font-weight: 800; }
.avatar-upload__label { position: relative; display: inline-block; cursor: pointer; }
.avatar-upload__badge { position: absolute; right: -4px; bottom: -4px; width: 24px; height: 24px; border-radius: 50%; background: var(--c-accent); color: #fff; display: grid; place-items: center; font-size: 12px; border: 2px solid var(--c-surface); }
.g { color: #ea4335; }
.fb { color: #1877f2; }

/* ---------- Static pages ---------- */
.prose { max-width: 720px; }
.prose h2 { margin-top: 18px; font-size: 16px; }
.prose li { margin-bottom: 6px; }