:root {
  --bg: #ffffff;
  --bg-soft: #f5f3ff;
  --card: #ffffff;
  --ink: #170f30;
  --ink-soft: #675f80;
  --purple: #6d3ef0;
  --purple-dark: #4c1fc7;
  --purple-light: #9a6bff;
  --purple-tint: #efe9ff;
  --paid: #17b26a;
  --paid-bg: #e4f9ee;
  --unpaid: #e6483a;
  --unpaid-bg: #fdecea;
  --line: #ece8fb;
  --shadow: rgba(76, 42, 199, 0.14);
  --focus: #4c1fc7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #140b2e;
    --bg-soft: #190f3c;
    --card: #1f1547;
    --ink: #f1edff;
    --ink-soft: #b7aed9;
    --purple: #a686ff;
    --purple-dark: #c3aeff;
    --purple-light: #8a63f2;
    --purple-tint: #2a1e5c;
    --paid: #35d38a;
    --paid-bg: #123322;
    --unpaid: #ff7a6b;
    --unpaid-bg: #3a1a17;
    --line: #2d2260;
    --shadow: rgba(0, 0, 0, 0.5);
    --focus: #c3aeff;
  }
}

* { box-sizing: border-box; }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

html, body { margin: 0; }

body {
  background: var(--bg-soft);
  color: var(--ink);
  font-family: "Poppins", "Segoe UI", system-ui, sans-serif;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 72px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

h1, h2, h3 { font-family: "Poppins", "Segoe UI", system-ui, sans-serif; text-wrap: balance; margin: 0; font-weight: 700; }

a { color: var(--purple-dark); }

/* Hero */
.hero {
  background: linear-gradient(135deg, #6d3ef0 0%, #7f52f5 45%, #9a6bff 100%);
  border-radius: 28px;
  padding: 36px 32px;
  color: #ffffff;
  box-shadow: 0 20px 40px -20px var(--shadow);
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}
.hero-title {
  font-size: clamp(30px, 6vw, 42px);
  font-weight: 800;
  margin-top: 16px;
  color: #ffffff;
}
.hero-sub {
  margin-top: 8px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
  max-width: 46ch;
}
.hero-amount {
  margin-top: 22px;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  background: #ffffff;
  color: var(--purple-dark);
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 800;
}
.hero-amount .num { font-size: 22px; }
.hero-amount .lbl { font-size: 13px; font-weight: 600; color: var(--ink-soft); }

/* Cards */
.card {
  background: var(--card);
  border-radius: 22px;
  box-shadow: 0 1px 2px var(--shadow), 0 12px 30px -22px var(--shadow);
}

/* Payment tiles */
.pay-card { padding: 24px; }
.pay-card h2 { font-size: 17px; margin-bottom: 14px; }
.tile-row { display: flex; gap: 12px; }
.tile { width: 100%; }

.share-card { padding: 24px; }
.share-card h2 { font-size: 17px; margin-bottom: 18px; }
.share-body { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.share-body img {
  box-sizing: content-box;
  width: 120px; height: 120px; flex: none; display: block; border-radius: 12px;
  background: #fff; border: 1px solid var(--line); padding: 16px; margin: 2px;
}
.share-body p { flex: 1; min-width: 200px; margin: 0; }
.tile {
  background: var(--purple-tint);
  border-radius: 16px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tile .icon {
  width: 30px; height: 30px; border-radius: 999px;
  background: var(--purple); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}
.tile .tile-label { font-size: 12px; color: var(--ink-soft); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
.tile .tile-value { font-size: 16px; font-weight: 700; overflow-wrap: anywhere; }
.pay-note { margin-top: 14px; font-size: 13px; color: var(--ink-soft); }

/* Progress */
.progress-card { padding: 24px; display: flex; flex-direction: column; gap: 12px; }
.progress-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.progress-head h2 { font-size: 19px; }
.progress-pct {
  font-size: 20px; font-weight: 800;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.bar-track { height: 12px; border-radius: 999px; background: var(--purple-tint); overflow: hidden; }
.bar-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--purple), var(--purple-light)); transition: width 0.4s ease; }
.progress-sub { color: var(--ink-soft); font-size: 13px; }

/* Roster */
.list-card { padding: 8px 0 4px; }
.list-head { padding: 18px 24px 12px; display: flex; justify-content: space-between; align-items: center; }
.list-head h2 { font-size: 18px; }
.list-head .count { color: var(--ink-soft); font-size: 13px; font-weight: 600; }
ul.roster { list-style: none; margin: 0; padding: 0; }
.roster li { border-top: 1px solid var(--line); }
.roster li:first-child { border-top: none; }
.row-form, .row-static {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 24px; width: 100%;
}
.name-row { display: flex; align-items: center; gap: 12px; min-width: 0; }
.avatar {
  flex: none; width: 34px; height: 34px; border-radius: 999px;
  background: var(--purple-tint); color: var(--purple-dark);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
}
.name { font-weight: 600; overflow-wrap: anywhere; }
.remove-btn {
  border: none; background: none; color: var(--ink-soft); cursor: pointer; font-size: 17px; line-height: 1;
  padding: 4px 6px; border-radius: 8px;
}
.remove-btn:hover { color: var(--unpaid); background: var(--unpaid-bg); }

.pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 700; white-space: nowrap; border: none;
}
.pill .dot { width: 7px; height: 7px; border-radius: 999px; }
.pill.paid { background: var(--paid-bg); color: var(--paid); }
.pill.paid .dot { background: var(--paid); }
.pill.unpaid { background: var(--unpaid-bg); color: var(--unpaid); }
.pill.unpaid .dot { background: var(--unpaid); }
button.pill { cursor: pointer; font-family: inherit; }
button.pill:hover { filter: brightness(0.96); }

.add-row { padding: 16px 24px 20px; display: flex; gap: 8px; border-top: 1px solid var(--line); }
.add-row input { flex: 1; }

input, select {
  font: inherit; color: var(--ink); background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: 12px; padding: 10px 14px;
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--focus); outline-offset: 2px;
}

.btn {
  font: inherit; font-weight: 700; border-radius: 999px; padding: 11px 22px; cursor: pointer; border: none;
}
.btn-primary { background: linear-gradient(135deg, var(--purple), var(--purple-light)); color: #fff; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-primary:disabled { opacity: 0.6; cursor: default; }
.btn-ghost { background: var(--purple-tint); color: var(--purple-dark); }
.btn-ghost:hover { filter: brightness(0.97); }
.btn-quiet { background: none; border: none; color: var(--ink-soft); font: inherit; font-weight: 600; cursor: pointer; padding: 6px 4px; }
.btn-quiet:hover { color: var(--purple-dark); }

/* Admin */
.admin-card { padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.admin-card h2 { font-size: 18px; }
.admin-flag {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; color: var(--purple-dark);
  background: var(--purple-tint); padding: 5px 12px; border-radius: 999px; text-transform: uppercase; letter-spacing: 0.05em;
  width: fit-content;
}
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .field-grid { grid-template-columns: 1fr; } }
.field label { display: block; font-size: 12px; font-weight: 600; color: var(--ink-soft); margin-bottom: 5px; }
.field input { width: 100%; }
.admin-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.save-error { color: var(--unpaid); font-size: 13px; font-weight: 600; }
.save-ok { color: var(--paid); font-size: 13px; font-weight: 600; }

/* Footer / pin gate */
.foot { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--ink-soft); }
.pin-panel { padding: 20px 24px; display: flex; flex-direction: column; gap: 10px; }
.pin-row { display: flex; gap: 8px; align-items: center; }
.pin-row input { width: 110px; letter-spacing: 0.3em; text-align: center; }
.pin-error { color: var(--unpaid); font-size: 13px; font-weight: 600; }