:root {
  --green: #1D9E75;
  --green-dark: #167a5a;
  --bg: #f4f6f5;
  --card: #ffffff;
  --ink: #1a2420;
  --muted: #7a8a83;
  --line: #e4e9e7;
  --danger: #d9534f;
  --amber: #e0a500;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(20,40,30,0.06);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Noto Sans Thai", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
}
.muted { color: var(--muted); }
.small { font-size: 12px; }
h1,h2,h3 { margin: 0; }

/* ── Auth ── */
.auth-wrap {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 16px; padding: 20px;
}
.auth-card {
  background: var(--card); border-radius: 20px; box-shadow: var(--shadow);
  padding: 28px; width: 100%; max-width: 380px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo { font-size: 34px; }
.brand.small .logo { font-size: 22px; }
.brand h1 { font-size: 22px; }
.brand h1 .muted { font-weight: 400; }
.tabs { display: flex; gap: 6px; margin: 22px 0 16px; background: var(--bg); padding: 4px; border-radius: 10px; }
.tab { flex: 1; padding: 9px; border: 0; background: transparent; border-radius: 8px; cursor: pointer; font-weight: 600; color: var(--muted); }
.tab.active { background: var(--card); color: var(--green); box-shadow: var(--shadow); }
form label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 12px; color: var(--ink); }
form input, form select { width: 100%; margin-top: 5px; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 15px; font-weight: 400; }
form input:focus, form select:focus { outline: 2px solid var(--green); border-color: transparent; }
.error { color: var(--danger); font-size: 13px; min-height: 18px; margin: 8px 0 0; }

/* show/hide password toggle */
.pw-field { position: relative; display: block; }
.pw-field input { width: 100%; padding-right: 42px; }
.pw-eye { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); margin-top: 3px; border: 0; background: none; cursor: pointer; font-size: 17px; padding: 4px 6px; opacity: .65; line-height: 1; }
.pw-eye:hover { opacity: 1; }
.footnote { margin: 0; }

/* ── Buttons ── */
.btn { padding: 9px 14px; border: 1px solid var(--line); background: var(--card); border-radius: 10px; cursor: pointer; font-weight: 600; font-size: 14px; color: var(--ink); }
.btn:hover { border-color: var(--green); }
.btn.primary { background: var(--green); color: #fff; border-color: var(--green); }
.btn.primary:hover { background: var(--green-dark); }
.btn.ghost { border-color: transparent; background: transparent; color: var(--muted); }
.btn.danger { color: var(--danger); border-color: #f0cfce; }
.btn.block { width: 100%; padding: 12px; margin-top: 6px; }
.btn.small { padding: 5px 10px; font-size: 12px; }

/* ── Topbar ── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 22px; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 5;
}
.topbar-right { display: flex; align-items: center; gap: 14px; }
.balance-pill { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.2; }
.balance-pill strong { color: var(--green); font-size: 17px; }
.who { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.3; }

/* ── Layout ── */
.container { max-width: 980px; margin: 0 auto; padding: 24px 22px 60px; }
.section { margin-bottom: 34px; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.section-head h2 { font-size: 18px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }

/* ── Card ── */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; border: 1px solid var(--line); }
.card h3 { font-size: 16px; margin-bottom: 4px; }
.card-row { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; }
.badge { font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 20px; text-transform: uppercase; letter-spacing: .3px; }
.badge.active { background: #e2f5ee; color: var(--green); }
.badge.draft { background: #eef1f0; color: var(--muted); }
.badge.paused { background: #fbf1d8; color: var(--amber); }
.badge.ended { background: #f0e6e6; color: var(--danger); }
.badge.upcoming { background: #e7effb; color: #3b6fb5; }
.empty { color: var(--muted); font-size: 14px; padding: 20px; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); grid-column: 1/-1; }

/* progress bar */
.bar { height: 8px; background: var(--bg); border-radius: 6px; overflow: hidden; margin-top: 10px; }
.bar > span { display: block; height: 100%; background: var(--green); }

/* stats grid */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 14px 0; }
.stat { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.stat .k { font-size: 12px; color: var(--muted); }
.stat .v { font-size: 18px; font-weight: 700; }

/* ── Modal ── */
.modal-host { position: fixed; inset: 0; z-index: 20; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(20,30,25,0.45); }
.modal { position: relative; background: var(--card); border-radius: 18px; box-shadow: 0 12px 40px rgba(0,0,0,.2); padding: 24px; width: 100%; max-width: 460px; max-height: 88vh; overflow-y: auto; }
.modal h2 { font-size: 19px; margin-bottom: 4px; }
.modal .modal-sub { color: var(--muted); font-size: 13px; margin-bottom: 18px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* QR mock */
.qr-box { text-align: center; padding: 16px; background: var(--bg); border-radius: 14px; }
.qr-svg { width: 160px; height: 160px; }
.qr-payload { font-family: monospace; font-size: 11px; word-break: break-all; color: var(--muted); margin: 10px 0 0; }

/* leaderboard */
.lb-row { display: flex; align-items: center; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.lb-rank { width: 26px; height: 26px; border-radius: 50%; background: var(--bg); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; }
.lb-rank.top { background: var(--green); color: #fff; }
.lb-row .name { flex: 1; font-weight: 600; }
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 11px 18px; border-radius: 10px; z-index: 40; box-shadow: var(--shadow); font-size: 14px; }