UI Components Medium

Ticketing — Door Check-in Scanner

A bold door check-in console for festival gate staff. A mock camera viewport with an animated targeting frame and sweeping laser feeds a color-coded result card that turns green for valid passes, amber for already-used tickets, and red for invalid codes. A live counter tracks admitted guests against capacity with a scan-rate readout, while a manual lookup searches by name or ticket code and a recent-scans feed logs every decision. Vanilla HTML, CSS, and JavaScript only.

Open in Lab

html css vanilla-js

Targets: JS HTML

Code

:root {
  --brand: #7c3aed;
  --brand-d: #6d28d9;
  --ink: #0e0e16;
  --ink-2: #3a3a4d;
  --muted: #6c6c80;
  --bg: #f5f4f9;
  --surface: #ffffff;
  --line: rgba(14, 14, 22, 0.1);
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
  --accent: #ff3d81;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --sh-sm: 0 1px 2px rgba(14, 14, 22, 0.06), 0 2px 6px rgba(14, 14, 22, 0.05);
  --sh-md: 0 8px 24px rgba(14, 14, 22, 0.12);
  --sh-lg: 0 24px 60px rgba(14, 14, 22, 0.22);
  --tier-ga: #22c55e;
  --tier-vip: #ff3d81;
  --tier-back: #38bdf8;
  --tier-press: #fbbf24;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    radial-gradient(900px 480px at 110% -10%, rgba(124, 58, 237, 0.12), transparent 60%),
    radial-gradient(700px 420px at -10% 0%, rgba(255, 61, 129, 0.1), transparent 55%);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.app {
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 22px 48px;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  margin-bottom: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  font-size: 14px;
  letter-spacing: -1px;
  box-shadow: var(--sh-md);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}
.brand__text strong {
  font-weight: 800;
  font-size: 16px;
}
.brand__text span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
}

.topbar__meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--line);
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.pill--live {
  background: rgba(22, 163, 74, 0.1);
  border-color: rgba(22, 163, 74, 0.25);
  color: var(--ok);
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.5);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.5); }
  70% { box-shadow: 0 0 0 7px rgba(22, 163, 74, 0); }
  100% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0); }
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: linear-gradient(135deg, var(--brand-d), var(--brand));
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  box-shadow: var(--sh-sm);
}

/* ---------- Layout ---------- */
.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  padding: 20px;
}

.panel__title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
}

/* ---------- Scanner ---------- */
.scanner__head h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.scanner__head p {
  margin: 4px 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.viewport {
  position: relative;
  aspect-ratio: 5 / 4;
  border-radius: var(--r-md);
  overflow: hidden;
  background: #0a0a12;
  display: grid;
  place-items: center;
  isolation: isolate;
}
.viewport__feed {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 120% at 30% 20%, rgba(124, 58, 237, 0.4), transparent 55%),
    radial-gradient(120% 120% at 80% 90%, rgba(255, 61, 129, 0.35), transparent 50%),
    repeating-linear-gradient(115deg, rgba(255, 255, 255, 0.04) 0 2px, transparent 2px 5px),
    #0a0a12;
  filter: saturate(1.1);
}
.viewport::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.45));
  z-index: 1;
}

.targeting {
  position: relative;
  z-index: 2;
  width: 58%;
  aspect-ratio: 1;
  max-width: 220px;
}
.corner {
  position: absolute;
  width: 30px;
  height: 30px;
  border: 3px solid #fff;
  transition: border-color 0.25s;
}
.tl { top: 0; left: 0; border-right: 0; border-bottom: 0; border-top-left-radius: 6px; }
.tr { top: 0; right: 0; border-left: 0; border-bottom: 0; border-top-right-radius: 6px; }
.bl { bottom: 0; left: 0; border-right: 0; border-top: 0; border-bottom-left-radius: 6px; }
.br { bottom: 0; right: 0; border-left: 0; border-top: 0; border-bottom-right-radius: 6px; }

.laser {
  position: absolute;
  left: 6%;
  right: 6%;
  top: 12%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 14px var(--accent);
  opacity: 0;
}
.viewport__hint {
  position: absolute;
  z-index: 3;
  bottom: 12px;
  margin: 0;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  backdrop-filter: blur(4px);
}

.viewport[data-state="scanning"] .laser {
  opacity: 1;
  animation: sweep 1.1s ease-in-out infinite;
}
.viewport[data-state="scanning"] .corner {
  border-color: var(--accent);
}
@keyframes sweep {
  0%, 100% { top: 12%; }
  50% { top: 84%; }
}
.viewport[data-state="valid"] .corner { border-color: var(--ok); }
.viewport[data-state="used"] .corner { border-color: var(--warn); }
.viewport[data-state="invalid"] .corner { border-color: var(--danger); }
.viewport[data-state="valid"],
.viewport[data-state="used"],
.viewport[data-state="invalid"] {
  animation: flash 0.4s ease;
}
@keyframes flash {
  0% { box-shadow: inset 0 0 0 4px currentColor; }
  100% { box-shadow: inset 0 0 0 0 transparent; }
}

/* scan actions */
.scan-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin: 16px 0;
}
.scan-actions__forced {
  display: flex;
  gap: 6px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-weight: 700;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  padding: 11px 18px;
  cursor: pointer;
  transition: transform 0.08s, box-shadow 0.2s, background 0.2s, opacity 0.2s;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-d));
  color: #fff;
  box-shadow: var(--sh-md);
}
.btn--primary:hover { box-shadow: var(--sh-lg); }
.btn--primary[disabled] { opacity: 0.7; cursor: progress; }
.btn--ghost {
  background: var(--surface);
  border-color: var(--line);
  color: var(--ink);
  width: 100%;
  margin-top: 4px;
}
.btn--ghost:hover { background: var(--bg); }

.btn__spin {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  display: none;
}
.btn--primary[disabled] .btn__spin {
  display: inline-block;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.chip {
  font: inherit;
  font-size: 12.5px;
  font-weight: 700;
  padding: 8px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  transition: transform 0.08s, background 0.15s, color 0.15s, border-color 0.15s;
}
.chip:hover { transform: translateY(-1px); }
.chip--ok:hover { background: rgba(22, 163, 74, 0.1); color: var(--ok); border-color: rgba(22, 163, 74, 0.3); }
.chip--used:hover { background: rgba(217, 119, 6, 0.1); color: var(--warn); border-color: rgba(217, 119, 6, 0.3); }
.chip--bad:hover { background: rgba(220, 38, 38, 0.1); color: var(--danger); border-color: rgba(220, 38, 38, 0.3); }

/* ---------- Result card ---------- */
.result {
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--bg);
  overflow: hidden;
  position: relative;
}
.result__empty {
  text-align: center;
  padding: 32px 20px;
  color: var(--muted);
}
.result__empty .result__icon {
  display: block;
  font-size: 30px;
  margin-bottom: 6px;
  opacity: 0.6;
}
.result__empty p { margin: 0; font-size: 14px; font-weight: 500; }

.result__body {
  padding: 18px 20px 20px;
  position: relative;
}
.result[data-state="valid"] { background: rgba(22, 163, 74, 0.06); border-color: rgba(22, 163, 74, 0.3); }
.result[data-state="used"] { background: rgba(217, 119, 6, 0.07); border-color: rgba(217, 119, 6, 0.32); }
.result[data-state="invalid"] { background: rgba(220, 38, 38, 0.06); border-color: rgba(220, 38, 38, 0.32); }

.result__badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 6px 13px;
  border-radius: 999px;
  color: #fff;
}
.result[data-state="valid"] .result__badge { background: var(--ok); }
.result[data-state="used"] .result__badge { background: var(--warn); }
.result[data-state="invalid"] .result__badge { background: var(--danger); }
.result__badge::before {
  content: "✓";
}
.result[data-state="used"] .result__badge::before { content: "⟳"; }
.result[data-state="invalid"] .result__badge::before { content: "✕"; }

.result__perf {
  height: 2px;
  margin: 16px -20px;
  border-top: 2px dashed var(--line);
}

.result__guest {
  display: flex;
  align-items: center;
  gap: 13px;
}
.result__avatar {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  font-weight: 800;
  display: grid;
  place-items: center;
  flex: none;
  box-shadow: var(--sh-sm);
}
.result__guest h2 { margin: 0; font-size: 18px; font-weight: 800; }
.result__guest p { margin: 1px 0 0; color: var(--muted); font-size: 13px; font-weight: 600; }
.tier-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  margin-left: auto;
  flex: none;
  border: 2px solid #fff;
  box-shadow: var(--sh-sm);
}

.result__meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 16px 0 0;
}
.result__meta dt {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 700;
}
.result__meta dd {
  margin: 2px 0 0;
  font-weight: 700;
  font-size: 14px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
}

.result__note {
  margin: 14px 0 0;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  background: var(--surface);
  border: 1px solid var(--line);
}
.result[data-state="used"] .result__note { color: var(--warn); }
.result[data-state="invalid"] .result__note { color: var(--danger); }

/* ---------- Side / stats ---------- */
.side {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.stats { display: flex; flex-direction: column; gap: 18px; }
.stat { display: flex; flex-direction: column; gap: 3px; }
.stat__label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--muted);
}
.stat--main .stat__value {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.stat__total { font-size: 18px; color: var(--muted); margin-left: 4px; }
.stat__value--sm { font-size: 22px; font-weight: 800; }
.stat__value--sm small { font-size: 12px; color: var(--muted); font-weight: 600; }
.stat__value--bad { color: var(--danger); }

.bar {
  height: 9px;
  border-radius: 999px;
  background: var(--bg);
  overflow: hidden;
  margin: 10px 0 4px;
  border: 1px solid var(--line);
}
.bar__fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.stat__pct { font-size: 12.5px; color: var(--muted); font-weight: 600; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

/* ---------- Lookup ---------- */
.lookup__field {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 12px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.lookup__field:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
  background: var(--surface);
}
.lookup__field span { color: var(--muted); font-size: 17px; }
.lookup__field input {
  flex: 1;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 14px;
  padding: 11px 0;
  color: var(--ink);
  outline: none;
}

.lookup__results { list-style: none; margin: 12px 0 0; padding: 0; }
.lookup__results:empty { display: none; }
.lookup__row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  font: inherit;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--r-md);
  padding: 9px 11px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: transform 0.08s, box-shadow 0.15s, border-color 0.15s;
}
.lookup__row:hover { transform: translateX(2px); box-shadow: var(--sh-sm); border-color: var(--brand); }
.lookup__row .tier-dot { margin: 0; width: 11px; height: 11px; }
.lookup__row b { font-size: 14px; }
.lookup__row small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-family: "JetBrains Mono", monospace;
}
.lookup__row .mini-badge {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 999px;
}
.mini-badge--in { background: rgba(217, 119, 6, 0.12); color: var(--warn); }
.mini-badge--out { background: rgba(22, 163, 74, 0.12); color: var(--ok); }
.lookup__none { color: var(--muted); font-size: 13px; padding: 4px 2px; margin: 0; }

/* ---------- Recent ---------- */
.recent__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.link {
  border: 0;
  background: none;
  font: inherit;
  font-weight: 700;
  font-size: 13px;
  color: var(--brand);
  cursor: pointer;
  padding: 4px;
}
.link:hover { text-decoration: underline; }

.recent__list { list-style: none; margin: 14px 0 0; padding: 0; }
.recent__empty { color: var(--muted); font-size: 13px; padding: 4px 0; }
.recent__item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  animation: slideIn 0.3s ease;
}
.recent__item:last-child { border-bottom: 0; }
@keyframes slideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
.recent__icon {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 14px;
  flex: none;
  color: #fff;
}
.recent__icon--valid { background: var(--ok); }
.recent__icon--used { background: var(--warn); }
.recent__icon--invalid { background: var(--danger); }
.recent__name { font-weight: 700; font-size: 14px; }
.recent__sub {
  color: var(--muted);
  font-size: 12px;
  font-family: "JetBrains Mono", monospace;
}
.recent__time {
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  flex: none;
}

/* ---------- Toast ---------- */
.toast-wrap {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 50;
  width: min(360px, calc(100vw - 32px));
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: #fff;
  padding: 12px 15px;
  border-radius: var(--r-md);
  box-shadow: var(--sh-lg);
  font-size: 13.5px;
  font-weight: 600;
  animation: toastIn 0.25s ease;
}
.toast.out { animation: toastOut 0.25s ease forwards; }
.toast::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}
.toast--ok::before { background: var(--ok); }
.toast--warn::before { background: var(--warn); }
.toast--bad::before { background: var(--danger); }
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateY(12px); }
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .app { padding: 14px 14px 40px; }
  .topbar { flex-wrap: wrap; gap: 12px; }
  .scan-actions { flex-direction: column; align-items: stretch; }
  .btn--primary { width: 100%; }
  .scan-actions__forced { justify-content: space-between; }
  .stat--main .stat__value { font-size: 32px; }
  .result__meta { grid-template-columns: 1fr 1fr; }
}

(function () {
  "use strict";

  // ---- Fictional ticket holders ----------------------------------------
  var TIERS = {
    GA: { label: "General Admission", color: "var(--tier-ga)" },
    VIP: { label: "VIP Pit", color: "var(--tier-vip)" },
    BACK: { label: "Backstage", color: "var(--tier-back)" },
    PRESS: { label: "Press", color: "var(--tier-press)" },
  };

  var GUESTS = [
    { code: "NP-7K2Q", name: "Mara Velez", tier: "VIP", seat: "Pit A · Row 2" },
    { code: "NP-3H8R", name: "Desmond Okafor", tier: "GA", seat: "Floor · GA" },
    { code: "NP-9F4T", name: "Yuki Tanabe", tier: "BACK", seat: "Backstage · West" },
    { code: "NP-2C6L", name: "Priya Nadkarni", tier: "GA", seat: "Floor · GA" },
    { code: "NP-5M1W", name: "Leo Marchetti", tier: "PRESS", seat: "Press Box · 4" },
    { code: "NP-8B0X", name: "Aisha Rahman", tier: "VIP", seat: "Pit B · Row 1" },
    { code: "NP-4D7N", name: "Connor Walsh", tier: "GA", seat: "Floor · GA" },
    { code: "NP-6J3K", name: "Sofia Reyes", tier: "BACK", seat: "Backstage · East" },
    { code: "NP-1G5P", name: "Theo Lindqvist", tier: "GA", seat: "Floor · GA" },
    { code: "NP-0R9V", name: "Nadia Haddad", tier: "VIP", seat: "Pit A · Row 5" },
  ];
  // track who has already been admitted
  var admitted = {};

  // ---- DOM refs --------------------------------------------------------
  var $ = function (id) { return document.getElementById(id); };
  var viewport = $("viewport");
  var viewportHint = $("viewportHint");
  var resultEl = $("result");
  var resultEmpty = $("resultEmpty");
  var resultBody = $("resultBody");
  var refs = {
    badge: $("resultBadge"),
    initials: $("resultInitials"),
    name: $("resultName"),
    tier: $("resultTier"),
    tierDot: $("resultTierDot"),
    code: $("resultCode"),
    seat: $("resultSeat"),
    status: $("resultStatus"),
    note: $("resultNote"),
    override: $("overrideBtn"),
  };
  var simBtn = $("simScan");
  var recentList = $("recentList");
  var lookupForm = $("lookupForm");
  var lookupInput = $("lookupInput");
  var lookupResults = $("lookupResults");

  var statCountIn = $("countIn");
  var statBar = $("bar");
  var statPct = $("pct");
  var statRate = $("rate");
  var statRejected = $("rejected");
  var statElapsed = $("elapsed");
  var clockEl = $("clock");

  var CAP = 2400;
  var checkedIn = 1486; // doors already open a while
  var rejected = 7;
  var scanTimes = []; // timestamps of valid scans, for rate
  var doorsOpened = Date.now() - 71 * 60 * 1000; // ~71 min ago
  var scanning = false;
  var pendingOverride = null;

  // seed the rate so it isn't 0 at load
  (function seedRate() {
    var now = Date.now();
    for (var i = 0; i < 24; i++) scanTimes.push(now - Math.random() * 60000);
  })();

  // ---- Helpers ---------------------------------------------------------
  function initials(name) {
    return name.split(/\s+/).map(function (p) { return p[0]; }).join("").slice(0, 2).toUpperCase();
  }

  function fmtTime(d) {
    return d.toLocaleTimeString([], { hour: "2-digit", minute: "2-digit", second: "2-digit" });
  }

  function toast(msg, kind) {
    var wrap = $("toastWrap");
    var el = document.createElement("div");
    el.className = "toast" + (kind ? " toast--" + kind : "");
    el.textContent = msg;
    wrap.appendChild(el);
    setTimeout(function () {
      el.classList.add("out");
      setTimeout(function () { el.remove(); }, 250);
    }, 2600);
  }

  // ---- Stats render ----------------------------------------------------
  function renderStats() {
    statCountIn.textContent = checkedIn.toLocaleString();
    var pct = Math.min(100, Math.round((checkedIn / CAP) * 100));
    statBar.style.width = pct + "%";
    statPct.textContent = pct + "% of capacity";
    statRejected.textContent = rejected;

    // scan rate = valid scans in last 60s
    var cut = Date.now() - 60000;
    scanTimes = scanTimes.filter(function (t) { return t >= cut; });
    statRate.textContent = scanTimes.length;

    var mins = Math.floor((Date.now() - doorsOpened) / 60000);
    statElapsed.textContent = mins >= 60 ? Math.floor(mins / 60) + "h " + (mins % 60) + "m" : mins + "m";
  }

  // ---- Result card -----------------------------------------------------
  function showResult(guest, state, note) {
    resultEmpty.hidden = true;
    resultBody.hidden = false;
    resultEl.setAttribute("data-state", state);

    var t = TIERS[guest.tier];
    refs.badge.textContent = state === "valid" ? "VALID" : state === "used" ? "ALREADY USED" : "INVALID";
    refs.initials.textContent = initials(guest.name);
    refs.name.textContent = guest.name;
    refs.tier.textContent = t.label;
    refs.tierDot.style.background = t.color;
    refs.code.textContent = guest.code;
    refs.seat.textContent = guest.seat;
    refs.status.textContent = state === "valid" ? "Admitted" : state === "used" ? "Re-scan" : "Denied";
    refs.note.textContent = note || "";
    refs.note.hidden = !note;

    // override only for "used" tickets
    refs.override.hidden = state !== "used";
    pendingOverride = state === "used" ? guest : null;
  }

  function pushRecent(guest, state) {
    var empty = recentList.querySelector(".recent__empty");
    if (empty) empty.remove();

    var li = document.createElement("li");
    li.className = "recent__item";
    var glyph = state === "valid" ? "✓" : state === "used" ? "⟳" : "✕";
    li.innerHTML =
      '<span class="recent__icon recent__icon--' + state + '">' + glyph + "</span>" +
      '<div><div class="recent__name">' + guest.name + "</div>" +
      '<div class="recent__sub">' + guest.code + " · " + TIERS[guest.tier].label + "</div></div>" +
      '<span class="recent__time">' + fmtTime(new Date()) + "</span>";
    recentList.insertBefore(li, recentList.firstChild);

    while (recentList.children.length > 7) recentList.removeChild(recentList.lastChild);
  }

  // ---- Process a scan --------------------------------------------------
  function processGuest(guest, forced) {
    var state, note;
    if (forced === "invalid") {
      // synthesize a junk ticket
      guest = { code: "??-" + Math.random().toString(36).slice(2, 6).toUpperCase(), name: "Unknown pass", tier: "GA", seat: "—" };
      state = "invalid";
      note = "No matching ticket for this code. Direct guest to the box office.";
    } else if (forced === "used" || admitted[guest.code]) {
      state = "used";
      note = "This ticket was already scanned at " + (admitted[guest.code] || fmtTime(new Date())) + ". Verify ID before re-admitting.";
    } else {
      state = "valid";
      note = TIERS[guest.tier].label + " access granted. Enjoy the show!";
    }

    if (state === "valid") {
      admitted[guest.code] = fmtTime(new Date());
      checkedIn = Math.min(CAP, checkedIn + 1);
      scanTimes.push(Date.now());
      toast(guest.name + " checked in", "ok");
    } else if (state === "used") {
      toast("Duplicate scan — " + guest.code, "warn");
    } else {
      rejected += 1;
      toast("Invalid ticket rejected", "bad");
    }

    showResult(guest, state, note);
    pushRecent(guest, state);
    renderStats();

    viewport.setAttribute("data-state", state);
    viewportHint.textContent = state === "valid" ? "Admitted" : state === "used" ? "Already used" : "Rejected";
    setTimeout(function () {
      if (!scanning) {
        viewport.setAttribute("data-state", "idle");
        viewportHint.textContent = "Camera ready";
      }
    }, 1400);
  }

  function runScan(forced) {
    if (scanning) return;
    scanning = true;
    simBtn.disabled = true;
    viewport.setAttribute("data-state", "scanning");
    viewportHint.textContent = "Scanning…";

    setTimeout(function () {
      scanning = false;
      simBtn.disabled = false;
      var guest;
      if (forced === "invalid") {
        guest = null;
      } else if (forced === "used") {
        // pick someone already admitted, else mark a fresh one as used
        var usedCodes = Object.keys(admitted);
        if (usedCodes.length) {
          guest = GUESTS.filter(function (g) { return admitted[g.code]; })[0] || GUESTS[0];
        } else {
          guest = GUESTS[Math.floor(Math.random() * GUESTS.length)];
          admitted[guest.code] = fmtTime(new Date(Date.now() - 120000));
        }
      } else {
        guest = GUESTS[Math.floor(Math.random() * GUESTS.length)];
      }
      processGuest(guest || {}, forced);
    }, 850);
  }

  // ---- Events ----------------------------------------------------------
  simBtn.addEventListener("click", function () { runScan(null); });

  document.querySelectorAll("[data-force]").forEach(function (btn) {
    btn.addEventListener("click", function () { runScan(btn.getAttribute("data-force")); });
  });

  refs.override.addEventListener("click", function () {
    if (!pendingOverride) return;
    checkedIn = Math.min(CAP, checkedIn + 1);
    scanTimes.push(Date.now());
    showResult(pendingOverride, "valid", "Manually overridden by door staff. Admitted.");
    pushRecent(pendingOverride, "valid");
    toast("Override — " + pendingOverride.name + " admitted", "ok");
    renderStats();
  });

  // Manual lookup
  function renderLookup(q) {
    lookupResults.innerHTML = "";
    q = q.trim().toLowerCase();
    if (!q) return;

    var matches = GUESTS.filter(function (g) {
      return g.name.toLowerCase().indexOf(q) !== -1 || g.code.toLowerCase().indexOf(q) !== -1;
    }).slice(0, 5);

    if (!matches.length) {
      var none = document.createElement("p");
      none.className = "lookup__none";
      none.textContent = 'No guests match "' + q + '".';
      lookupResults.appendChild(none);
      return;
    }

    matches.forEach(function (g) {
      var li = document.createElement("li");
      var inside = !!admitted[g.code];
      var btn = document.createElement("button");
      btn.type = "button";
      btn.className = "lookup__row";
      btn.innerHTML =
        '<span class="tier-dot" style="background:' + TIERS[g.tier].color + '"></span>' +
        "<span><b>" + g.name + "</b><small>" + g.code + " · " + g.seat + "</small></span>" +
        '<span class="mini-badge ' + (inside ? "mini-badge--in" : "mini-badge--out") + '">' +
        (inside ? "Inside" : "Not in") + "</span>";
      btn.addEventListener("click", function () { directScan(g); });
      li.appendChild(btn);
      lookupResults.appendChild(li);
    });
  }

  // lookup picks a specific guest (bypass random)
  function directScan(guest) {
    if (scanning) return;
    scanning = true;
    simBtn.disabled = true;
    viewport.setAttribute("data-state", "scanning");
    viewportHint.textContent = "Looking up…";
    setTimeout(function () {
      scanning = false;
      simBtn.disabled = false;
      processGuest(guest, null);
    }, 700);
  }

  lookupInput.addEventListener("input", function () { renderLookup(lookupInput.value); });
  lookupForm.addEventListener("submit", function (e) {
    e.preventDefault();
    var first = lookupResults.querySelector(".lookup__row");
    if (first) first.click();
  });

  $("clearRecent").addEventListener("click", function () {
    recentList.innerHTML = '<li class="recent__empty">No scans yet.</li>';
    toast("Recent scans cleared");
  });

  // Clock
  function tick() {
    clockEl.textContent = fmtTime(new Date());
    renderStats();
  }
  tick();
  setInterval(tick, 1000);

  renderStats();
})();

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>Door Check-in Scanner — Neon Pulse Festival</title>
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700&display=swap"
      rel="stylesheet"
    />
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="app">
      <header class="topbar" role="banner">
        <div class="brand">
          <span class="brand__mark" aria-hidden="true">◢◤</span>
          <div class="brand__text">
            <strong>Neon Pulse Festival</strong>
            <span>Door Check-in · Gate B</span>
          </div>
        </div>
        <div class="topbar__meta">
          <span class="pill pill--live"><span class="dot" aria-hidden="true"></span>Live</span>
          <span class="pill" id="clock">--:--:--</span>
          <button class="avatar" type="button" aria-label="Door staff: Riley Tran">RT</button>
        </div>
      </header>

      <main class="grid">
        <!-- Scanner column -->
        <section class="panel scanner" aria-label="Scan viewport">
          <div class="scanner__head">
            <h1>Scan a ticket</h1>
            <p>Point the camera at the QR on each guest's pass.</p>
          </div>

          <div class="viewport" id="viewport" data-state="idle">
            <div class="viewport__feed" aria-hidden="true"></div>
            <div class="targeting" aria-hidden="true">
              <span class="corner tl"></span>
              <span class="corner tr"></span>
              <span class="corner bl"></span>
              <span class="corner br"></span>
              <span class="laser"></span>
            </div>
            <p class="viewport__hint" id="viewportHint">Camera ready</p>
          </div>

          <div class="scan-actions">
            <button class="btn btn--primary" id="simScan" type="button">
              <span class="btn__spin" aria-hidden="true"></span>
              Simulate scan
            </button>
            <div class="scan-actions__forced" role="group" aria-label="Force a result">
              <button class="chip chip--ok" data-force="valid" type="button">Valid</button>
              <button class="chip chip--used" data-force="used" type="button">Used</button>
              <button class="chip chip--bad" data-force="invalid" type="button">Invalid</button>
            </div>
          </div>

          <!-- Result card -->
          <article class="result" id="result" data-state="empty" aria-live="polite">
            <div class="result__empty" id="resultEmpty">
              <span class="result__icon" aria-hidden="true">⬚</span>
              <p>Awaiting first scan of the night.</p>
            </div>
            <div class="result__body" id="resultBody" hidden>
              <div class="result__badge" id="resultBadge">VALID</div>
              <div class="result__perf" aria-hidden="true"></div>
              <div class="result__guest">
                <div class="result__avatar" id="resultInitials" aria-hidden="true">—</div>
                <div>
                  <h2 id="resultName">—</h2>
                  <p id="resultTier">—</p>
                </div>
                <span class="tier-dot" id="resultTierDot" aria-hidden="true"></span>
              </div>
              <dl class="result__meta">
                <div><dt>Ticket</dt><dd id="resultCode">—</dd></div>
                <div><dt>Section</dt><dd id="resultSeat">—</dd></div>
                <div><dt>Status</dt><dd id="resultStatus">—</dd></div>
              </dl>
              <p class="result__note" id="resultNote"></p>
              <button class="btn btn--ghost" id="overrideBtn" type="button" hidden>
                Override &amp; admit anyway
              </button>
            </div>
          </article>
        </section>

        <!-- Side column -->
        <aside class="side">
          <section class="panel stats" aria-label="Check-in stats">
            <div class="stat stat--main">
              <span class="stat__label">Checked in</span>
              <span class="stat__value"><span id="countIn">0</span><span class="stat__total">/ <span id="countCap">2,400</span></span></span>
              <div class="bar"><span class="bar__fill" id="bar"></span></div>
              <span class="stat__pct" id="pct">0% of capacity</span>
            </div>
            <div class="stat-row">
              <div class="stat">
                <span class="stat__label">Scan rate</span>
                <span class="stat__value stat__value--sm"><span id="rate">0</span><small>/min</small></span>
              </div>
              <div class="stat">
                <span class="stat__label">Rejected</span>
                <span class="stat__value stat__value--sm stat__value--bad" id="rejected">0</span>
              </div>
              <div class="stat">
                <span class="stat__label">Doors open</span>
                <span class="stat__value stat__value--sm" id="elapsed">0m</span>
              </div>
            </div>
          </section>

          <section class="panel lookup" aria-label="Manual lookup">
            <h2 class="panel__title">Manual lookup</h2>
            <form id="lookupForm" role="search">
              <label class="sr-only" for="lookupInput">Search by name or ticket code</label>
              <div class="lookup__field">
                <span aria-hidden="true">⌕</span>
                <input
                  id="lookupInput"
                  type="search"
                  placeholder="Name or ticket code (e.g. NP-7K2Q)"
                  autocomplete="off"
                />
              </div>
            </form>
            <ul class="lookup__results" id="lookupResults"></ul>
          </section>

          <section class="panel recent" aria-label="Recent scans">
            <div class="recent__head">
              <h2 class="panel__title">Recent scans</h2>
              <button class="link" id="clearRecent" type="button">Clear</button>
            </div>
            <ul class="recent__list" id="recentList">
              <li class="recent__empty">No scans yet.</li>
            </ul>
          </section>
        </aside>
      </main>
    </div>

    <div class="toast-wrap" id="toastWrap" aria-live="polite" aria-atomic="true"></div>
    <script src="script.js"></script>
  </body>
</html>

Door Check-in Scanner

A high-contrast gate console for the fictional Neon Pulse Festival. The camera viewport mocks a live feed behind a targeting frame whose corners snap to color as a scan resolves, with a sweeping laser line during the read. Each scan drops into a result card that swaps state between a green valid pass, an amber already-used warning, and a red invalid rejection — complete with the guest’s name, tier dot, ticket code, section, and a contextual note. Used tickets surface an override button so trusted staff can admit after an ID check.

The sidebar keeps the door honest: a large checked-in counter animates against the 2,400 capacity bar, alongside a rolling scan rate per minute, a running rejected tally, and how long the doors have been open. A manual lookup field filters the guest list by name or ticket code as you type, showing whether each person is already inside, and tapping a match runs it straight through the scanner. Every decision lands in a recent-scans feed with timestamps, and toast notifications confirm each action. It all runs on vanilla JavaScript with no frameworks or build step.

Illustrative UI only — fictional events, not a real ticketing service.