:root {
  --bg: #f4f6f5; --card: #ffffff; --ink: #18211f; --muted: #5d6b67; --line: #dbe3e0;
  --brand: #0f5c4d; --brand-ink: #ffffff; --warn-bg: #fff4e0; --warn-ink: #7a4b00;
  --ok: #1d7a46; --bad: #a3271c;
  font-family: "Segoe UI", Tahoma, "Noto Sans Arabic", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1413; --card: #182120; --ink: #e8eeec; --muted: #9aa9a5; --line: #2a3533;
          --brand: #36b394; --brand-ink: #062019; --warn-bg: #3a2c12; --warn-ink: #ffd590; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); }
header { display: flex; justify-content: space-between; align-items: center; gap: 8px;
         padding: 12px 16px; background: var(--brand); color: var(--brand-ink); }
header h1 { font-size: 1.1rem; margin: 0; }
.head-actions { display: flex; gap: 8px; align-items: center; }
main { max-width: 640px; margin: 0 auto; padding: 16px; display: grid; gap: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.card h2 { margin: 0 0 12px; font-size: 1rem; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }
.row > input { flex: 1 1 160px; }
label { display: grid; gap: 4px; margin-bottom: 10px; font-size: .9rem; }
input, textarea { font: inherit; padding: 12px; border: 1px solid var(--line); border-radius: 8px;
                  background: var(--bg); color: var(--ink); min-height: 48px; }
button { font: inherit; min-height: 48px; padding: 0 18px; border-radius: 8px; border: 0;
         background: var(--brand); color: var(--brand-ink); cursor: pointer; }
button.secondary { background: transparent; color: var(--brand); border: 2px solid var(--brand); }
button.ghost { background: transparent; color: inherit; border: 1px solid currentColor; min-height: 36px; }
button:disabled { opacity: .5; cursor: progress; }
.big { font-size: 1.4rem; font-weight: 600; }
.muted, .hint { color: var(--muted); font-size: .85rem; }
.member-head { display: flex; justify-content: space-between; gap: 12px; }
.balance { text-align: end; }
.warn { background: var(--warn-bg); color: var(--warn-ink); padding: 8px 12px; border-radius: 8px; margin-top: 12px; }
.rewards { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 6px; }
.rewards li { border: 1px dashed var(--line); border-radius: 8px; padding: 8px 12px; }
.pill { font-size: .75rem; padding: 2px 8px; border-radius: 999px; background: rgba(255,255,255,.2); }
video { width: 100%; border-radius: 8px; margin-bottom: 8px; }
/* F3 counter code: full screen, readable from across the counter */
#counter { position: fixed; inset: 0; z-index: 10; background: var(--card); display: flex; flex-direction: column;
           align-items: center; justify-content: center; gap: 16px; padding: 24px 16px; text-align: center; overflow: auto; }
#counter[hidden] { display: none; }
#counter h2 { margin: 0; font-size: 1.4rem; }
#counter-qr { width: min(70vw, 50vh, 360px); background: #fff; padding: 8px; border-radius: 12px; }
#counter-qr svg { display: block; width: 100%; height: auto; }
#counter-code { font-size: clamp(2.6rem, 12vw, 5rem); font-weight: 700; letter-spacing: .08em;
                font-variant-numeric: tabular-nums; color: var(--brand); }
.counter-bar { width: min(80vw, 360px); height: 28px; border-radius: 999px; background: var(--line); overflow: hidden; }
#counter-left { display: block; height: 100%; background: var(--brand); color: var(--brand-ink); font-size: .8rem;
                line-height: 28px; white-space: nowrap; transition: width 1s linear; min-width: max-content; padding: 0 10px; }
#toast { position: fixed; inset-inline: 16px; bottom: 16px; max-width: 608px; margin: 0 auto; padding: 12px 16px;
         border-radius: 8px; color: #fff; background: var(--ok); opacity: 0; transition: opacity .2s; pointer-events: none; }
#toast.show { opacity: 1; }
#toast.bad { background: var(--bad); }