*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #f5f5f0;
  --card:    #ffffff;
  --text:    #1c1c1a;
  --muted:   #6b6b68;
  --accent:  #1a6b4a;
  --accent2: #d4eddc;
  --border:  #e2e2dc;
  --r:       10px;
  --shadow:  0 1px 3px rgba(0,0,0,.08);
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  font-size: 16px;
}

/* ── Layout ── */
main {
  max-width: 480px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

header {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .875rem 1rem;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
header h1 {
  flex: 1;
  font-size: 1rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.back { color: var(--accent); text-decoration: none; font-size: .875rem; white-space: nowrap; }

/* ── Banner ── */
.banner-area {
  position: relative; overflow: hidden; background: var(--border);
  height: 180px; transition: height .2s;
}
.banner-area.empty { height: 44px; background: var(--bg); border-bottom: 1px solid var(--border); }
.banner-img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0; transition: opacity .3s; }
.banner-img.loaded { opacity: 1; }
.banner-label {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--muted); font-size: .8125rem;
  background: transparent; transition: background .15s, color .15s;
}
.banner-label input[type="file"] { display: none; }
.banner-area:not(.empty) .banner-label { color: transparent; }
.banner-area:not(.empty) .banner-label:hover { background: rgba(0,0,0,.35); color: #fff; }
.banner-area.empty .banner-label:hover { background: var(--accent2); color: var(--accent); }

/* ── Typography ── */
h1 { font-size: 1.75rem; font-weight: 700; }
h2 { font-size: 1rem; font-weight: 600; }
.hero { padding: 1.5rem 0 1rem; }
.hero p { color: var(--muted); margin-top: .375rem; }

/* ── Cards ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

/* ── Forms ── */
.field { margin-bottom: 1rem; }
.field:last-child { margin-bottom: 0; }
.field > label, .field > .field-label {
  display: block;
  font-size: .8125rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: .375rem;
  text-transform: uppercase;
  letter-spacing: .03em;
}

input[type="text"],
input[type="number"],
input[type="date"],
textarea {
  width: 100%;
  padding: .625rem .75rem;
  border: 1.5px solid var(--border);
  border-radius: calc(var(--r) - 2px);
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  transition: border-color .15s;
  resize: vertical;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--card);
}
textarea { min-height: 4rem; margin-top: .375rem; }

.member-row { display: flex; gap: .5rem; margin-bottom: .5rem; }
.member-row input { flex: 1; }
.remove-btn {
  background: none; border: none; color: var(--muted);
  font-size: 1.25rem; line-height: 1; cursor: pointer; padding: 0 .25rem; flex-shrink: 0;
}
.remove-btn:hover { color: #c0392b; }

/* ── Buttons ── */
button {
  font-family: inherit; font-size: .9rem; font-weight: 500; cursor: pointer;
  border-radius: calc(var(--r) - 2px); transition: filter .15s, opacity .15s;
  display: inline-flex; align-items: center; gap: .375rem; border: none;
}
button:hover { filter: brightness(1.08); }
button:active { opacity: .85; }

.btn-primary  { background: var(--accent); color: #fff; padding: .625rem 1.25rem; }
.btn-ghost    { background: transparent; color: var(--text); border: 1.5px solid var(--border); padding: .5rem 1rem; }
.btn-sm       { padding: .375rem .75rem; font-size: .8125rem; }
.btn-full     { width: 100%; justify-content: center; }

#add-member   { color: var(--accent); border-color: var(--accent); margin-top: .25rem; font-size: .875rem; padding: .375rem .75rem; }

/* ── Inline link-style buttons ── */
.inline-link {
  background: none; border: none; color: var(--accent);
  font-size: .8125rem; padding: .25rem 0; cursor: pointer;
  text-decoration: underline; text-decoration-style: dotted; text-underline-offset: 3px;
  border-radius: 0;
}
.inline-link:hover { filter: none; opacity: .75; }

/* ── New person area ── */
.new-person-area { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; margin-top: .375rem; }
.inline-add { display: flex; align-items: center; gap: .375rem; }
.inline-add input { width: 140px; padding: .3rem .5rem; font-size: .875rem; }

/* ── File input ── */
.file-label {
  display: inline-flex; align-items: center; gap: .5rem;
  cursor: pointer; font-size: .875rem; color: var(--muted);
  border: 1.5px dashed var(--border); border-radius: calc(var(--r) - 2px);
  padding: .5rem .75rem; margin-top: .375rem;
}
.file-label input[type="file"] { display: none; }
.file-label:hover { border-color: var(--accent); color: var(--accent); }
.image-preview { display: block; max-width: 100%; max-height: 200px; object-fit: contain; border-radius: calc(var(--r) - 2px); margin-top: .5rem; }

/* ── Divider ── */
.divider {
  text-align: center; color: var(--muted); font-size: .8125rem; margin: 1.25rem 0; position: relative;
}
.divider::before, .divider::after { content: ''; position: absolute; top: 50%; width: 42%; height: 1px; background: var(--border); }
.divider::before { left: 0; } .divider::after { right: 0; }

/* ── Row ── */
.row { display: flex; align-items: center; gap: .5rem; }
.row.gap { align-items: flex-start; }
.flex1 { flex: 1; }

/* ── Sections ── */
section { margin-bottom: 2rem; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: .75rem; }
.section-header h2 { margin: 0; }

/* ── Expense items ── */
.expense-item {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r);
  margin-bottom: .5rem; overflow: hidden;
  transition: border-color .15s;
}
.expense-item.clickable { cursor: pointer; }
.expense-item.clickable:hover { border-color: var(--accent); }
.expense-item.expanded { border-color: var(--accent); }

.expense-summary {
  display: flex; justify-content: space-between; align-items: flex-start;
  padding: .75rem;
}
.expense-left { flex: 1; min-width: 0; }
.expense-desc {
  display: block; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.expense-meta { font-size: .8rem; color: var(--muted); margin-top: .125rem; }
.expense-right { text-align: right; flex-shrink: 0; padding-left: .75rem; }
.expense-amount { font-weight: 600; font-size: 1rem; }
.expense-payer  { font-size: .8rem; color: var(--muted); }

.expense-indicator { font-size: .7rem; color: var(--accent); margin-left: .25rem; }

/* ── Expense detail (expanded) ── */
.expense-detail {
  border-top: 1px solid var(--border); padding: .75rem; background: var(--bg);
}
.expense-note { font-size: .9rem; color: var(--text); white-space: pre-wrap; line-height: 1.5; }
.expense-image { display: block; max-width: 100%; max-height: 300px; object-fit: contain; border-radius: calc(var(--r) - 2px); margin-top: .625rem; }
.expense-note + .expense-image { margin-top: .625rem; }

/* ── Transfer items ── */
.transfer-item {
  display: flex; align-items: center; gap: .5rem;
  padding: .625rem .875rem; background: var(--accent2); border-radius: var(--r);
  margin-bottom: .5rem; font-size: .9375rem;
  cursor: pointer; transition: filter .15s;
}
.transfer-item:hover { filter: brightness(.96); }
.transfer-arrow { color: var(--muted); }
.transfer-amount { margin-left: auto; font-weight: 600; color: var(--accent); }
.transfer-hint { font-size: .75rem; color: var(--accent); margin-left: .25rem; opacity: .7; }

.empty { color: var(--muted); font-style: italic; font-size: .9rem; padding: .5rem 0; }

/* ── Pill group ── */
.pill-group { display: flex; flex-wrap: wrap; gap: .375rem; }
.pill-group label {
  display: flex; align-items: center; gap: .375rem; padding: .375rem .75rem;
  border: 1.5px solid var(--border); border-radius: 99px; cursor: pointer;
  font-size: .875rem; user-select: none; transition: border-color .15s, background .15s;
}
.pill-group input { position: absolute; opacity: 0; width: 0; height: 0; }
.pill-group label:has(input:checked) { border-color: var(--accent); background: var(--accent2); color: var(--accent); font-weight: 500; }

/* ── Modal ── */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: flex-end; justify-content: center; }
.modal.hidden { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.35); }
.modal .card {
  position: relative; width: 100%; max-width: 480px; max-height: 92dvh; overflow-y: auto;
  border-bottom-left-radius: 0; border-bottom-right-radius: 0; margin-bottom: 0;
}
.modal-actions { display: flex; gap: .5rem; margin-top: 1.25rem; }
.modal-actions button { flex: 1; justify-content: center; }

/* ── Utility ── */
.hidden { display: none !important; }

/* ── Lang button ── */
.lang-bar {
  display: flex; justify-content: flex-end;
  padding: .5rem 1rem 0;
  max-width: 480px; margin: 0 auto;
}
.lang-btn {
  background: none; border: 1.5px solid var(--border);
  border-radius: calc(var(--r) - 2px);
  padding: .25rem .5rem; font-size: 1.1rem; line-height: 1;
  cursor: pointer;
}
.lang-btn:hover { border-color: var(--accent); filter: none; }

/* ── Recent groups (index) ── */
#recent-section { margin-bottom: 1.5rem; }
#recent-section h2 { font-size: .8125rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin-bottom: .5rem; }
.recent-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: .625rem .875rem; background: var(--card);
  border: 1px solid var(--border); border-radius: var(--r);
  text-decoration: none; color: var(--text);
  margin-bottom: .375rem; transition: border-color .15s;
}
.recent-item:hover { border-color: var(--accent); }
.recent-name { font-weight: 500; }
.recent-id { font-size: .75rem; color: var(--muted); font-family: monospace; }

/* ── All expenses now clickable ── */
.expense-item { cursor: pointer; }
.expense-item:hover { border-color: var(--accent); }

/* ── Expense actions (edit / delete in detail) ── */
.expense-actions {
  display: flex; gap: .5rem; margin-top: .75rem; padding-top: .625rem;
  border-top: 1px solid var(--border);
}
.expense-actions .delete-btn { color: #c0392b; border-color: #f5c6c6; }
.expense-actions .delete-btn:hover { background: #fff0f0; filter: none; }

/* ── QR overlay ── */
.qr-overlay { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; }
.qr-overlay.hidden { display: none; }
.qr-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.5); }
.qr-box { position: relative; background: white; border-radius: var(--r); padding: 1.5rem; text-align: center; max-width: 300px; width: 90%; box-shadow: 0 8px 32px rgba(0,0,0,.2); }
.qr-box svg { width: 100%; max-width: 240px; height: auto; display: block; margin: 0 auto; }
.qr-url { font-size: .75rem; color: var(--muted); margin-top: .75rem; word-break: break-all; font-family: monospace; }
.qr-close { position: absolute; top: .5rem; right: .75rem; background: none; border: none; font-size: 1.25rem; color: var(--muted); cursor: pointer; padding: .25rem; }

/* ── Data section (export / import) ── */
#data-section { margin-bottom: 2rem; }
.data-actions { display: flex; gap: .5rem; }
#import-label { cursor: pointer; user-select: none; }
#import-label input[type="file"] { display: none; }

/* ── Journal ── */
#journal-section { margin-bottom: 2rem; }

#journal-details > summary {
  list-style: none;
  display: flex; align-items: center; gap: .375rem;
  cursor: pointer; padding: .375rem 0;
  font-size: 1rem; font-weight: 600; user-select: none;
}
#journal-details > summary::-webkit-details-marker { display: none; }
#journal-details > summary::before {
  content: '▾';
  color: var(--accent); font-size: .7rem;
  display: inline-block; transition: transform .15s;
}
#journal-details[open] > summary::before { transform: rotate(-180deg); }

.journal-count { font-size: .8rem; font-weight: 400; color: var(--muted); }

#journal-list { margin-top: .625rem; }
.journal-entry {
  display: flex; gap: .375rem; flex-wrap: wrap;
  padding: .375rem 0; border-bottom: 1px solid var(--border);
  font-size: .8125rem;
}
.journal-entry:last-child { border-bottom: none; }
.journal-ts { color: var(--muted); white-space: nowrap; flex-shrink: 0; }
.journal-sep { color: var(--muted); }
.journal-details { color: var(--text); }