:root {
  --accent: #0d9488;
  --accent-dark: #0f766e;
  --accent-light: #ccfbf1;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #334155;
  --muted: #94a3b8;
  --border: #e2e8f0;
  --pos: #0d9488;
  --neg: #dc2626;
  --radius: 14px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  padding-bottom: env(safe-area-inset-bottom);
}

header {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 18px 16px calc(18px + env(safe-area-inset-top));
  padding-top: calc(18px + env(safe-area-inset-top));
  background: var(--accent);
  color: #fff;
}
header h1 { margin: 0; font-size: 20px; letter-spacing: 0.3px; }

.sync-status {
  position: absolute;
  right: 16px;
  font-size: 14px;
  color: #a7f3d0;
}
.sync-status.saving { color: #fde68a; }
.sync-status.error { color: #fca5a5; }

.tabs {
  display: flex;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.tab {
  flex: 1;
  border: none;
  background: none;
  padding: 14px 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

main { max-width: 640px; margin: 0 auto; padding: 16px; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.card h2 { margin: 0 0 14px; font-size: 16px; color: var(--accent-dark); }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 12px;
}
input, select {
  display: block;
  width: 100%;
  margin-top: 5px;
  padding: 11px 12px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font-family: inherit;
}
input:focus, select:focus { outline: 2px solid var(--accent-light); border-color: var(--accent); }

.row { display: flex; gap: 12px; }
.row > label { flex: 1; }
.row > input { flex: 1; margin-top: 0; }
#person-add { width: auto; white-space: nowrap; margin-top: 0; }

button {
  cursor: pointer;
  font-family: inherit;
}
button.primary {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 13px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 10px;
}
button.primary:active { background: var(--accent-dark); }
button.danger {
  background: #fff;
  color: var(--neg);
  border: 1px solid var(--neg);
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
}
button.link {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 0;
}

.participants { margin-bottom: 14px; }
.participants-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 8px;
}
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}
.chip.on { background: var(--accent); color: #fff; border-color: var(--accent); }

.hint { font-size: 12px; color: var(--muted); margin: 8px 0 0; }
.hint.error { color: var(--neg); }

/* Segmenterad kontroll (dela lika / anpassat) */
.split-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px; font-size: 13px; font-weight: 600; color: var(--muted);
}
.seg { display: flex; background: var(--bg); border-radius: 10px; padding: 3px; gap: 3px; }
.seg-btn {
  border: none; background: none; padding: 7px 12px; font-size: 13px;
  font-weight: 600; color: var(--muted); border-radius: 8px;
}
.seg-btn.active { background: #fff; color: var(--accent); box-shadow: 0 1px 2px rgba(0,0,0,0.08); }

/* Anpassad split */
.custom-rows { display: flex; flex-direction: column; gap: 8px; margin: 10px 0 4px; }
.custom-row { display: flex; align-items: center; gap: 10px; }
.custom-row .cr-name { flex: 1; font-size: 14px; }
.custom-row input {
  width: 110px; margin-top: 0; text-align: right; padding: 9px 10px;
}
.custom-sum { font-size: 13px; font-weight: 600; margin: 6px 0 0; text-align: right; }
.custom-sum.ok { color: var(--pos); }
.custom-sum.off { color: var(--neg); }

.expense-list { display: flex; flex-direction: column; gap: 12px; }
.expense-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
}
.expense-item .ei-top { display: flex; justify-content: space-between; gap: 10px; }
.expense-item .ei-desc { font-weight: 600; }
.expense-item .ei-amount { font-weight: 700; color: var(--accent-dark); white-space: nowrap; }
.expense-item .ei-meta { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* Per-utlägg uppföljning av andelar */
.ei-progress {
  font-size: 12px; font-weight: 600; margin-top: 8px; color: var(--muted);
}
.ei-progress.done { color: var(--pos); }
.ei-shares { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.share-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 8px; background: var(--bg);
}
.share-row.payer { background: var(--accent-light); }
.share-row.paid .sr-name { text-decoration: line-through; }
.share-row .sr-name { flex: 1; font-size: 14px; }
.share-row .sr-amount { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.share-row .sr-tag { font-size: 11px; color: var(--accent-dark); font-weight: 600; }
.share-check {
  width: 22px; height: 22px; border-radius: 6px;
  border: 2px solid var(--accent); background: #fff;
  display: grid; place-items: center; flex-shrink: 0;
  font-size: 14px; color: #fff; cursor: pointer;
}
.share-row.paid .share-check { background: var(--accent); }

.expense-item .ei-del {
  background: none; border: none; color: var(--neg);
  font-size: 12px; padding: 10px 0 0; font-weight: 600;
}
.total-line { text-align: right; font-size: 14px; margin: 14px 0 0; }

.totals-list, .people-list { display: flex; flex-direction: column; gap: 10px; }
.total-person {
  border: 1px solid var(--border); border-radius: 10px; padding: 12px;
}
.total-person .tp-top {
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px;
}
.total-person .tp-name { font-weight: 600; }
.total-person .tp-amount { font-weight: 700; font-variant-numeric: tabular-nums; }
.total-person .tp-amount.owing { color: var(--neg); }
.total-person .tp-amount.clear { color: var(--pos); }
.total-person .tp-detail { font-size: 12px; color: var(--muted); margin-top: 4px; }
.total-person .tp-receive {
  font-size: 12px; color: var(--pos); font-weight: 600; margin-top: 4px;
}

.person-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px;
}
.person-item .pi-del { background: none; border: none; color: var(--neg); font-weight: 600; font-size: 13px; }

.empty { color: var(--muted); font-size: 14px; text-align: center; padding: 10px; }