:root {
  /* Digital Realty palette (from digitalrealty.com): electric blue, deep teal, green, yellow, purple, greys */
  --bg: #f4f5f6;
  --paper: #ffffff;
  --ink: #0b2a30;
  --ink-2: #3f5459;
  --muted: #7a8b90;
  --line: #e1e5e7;
  --blue: #1f00ff;
  --blue-soft: #e9e5ff;
  --teal: #01454f;
  --green: #00d87d;
  --green-ink: #01454f;
  --green-soft: #dcfaea;
  --amber: #f3c14b;
  --amber-soft: #fdf3d8;
  --amber-ink: #6b4d00;
  --purple: #7700ec;
  --purple-soft: #efe3ff;
  --grey: #c7c8ca;
  --grey-soft: #f2f2f2;
  --radius: 20px;
  --shadow: 0 12px 32px rgba(1, 69, 79, 0.12), 0 1px 2px rgba(1, 69, 79, 0.08);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.45; -webkit-font-smoothing: antialiased; letter-spacing: -0.005em; }
a { color: var(--ink); }
h1, h2, h3, p { margin: 0; }
.h1 { font-size: 26px; font-weight: 600; letter-spacing: -0.01em; margin: 6px 0 14px; }
.h2 { font-size: 20px; font-weight: 600; margin: 10px 0; }
.h3 { font-size: 15px; font-weight: 600; display: flex; align-items: center; gap: 8px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.fine { font-size: 12px; color: var(--muted); margin-top: 14px; }
.mono { font-family: var(--mono); letter-spacing: 0.04em; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 20px 16px 48px; }
.wrap.narrow { max-width: 480px; }
.wrap.phone { max-width: 430px; }
.page-centered { display: flex; min-height: 100vh; align-items: center; }
.icon { width: 18px; height: 18px; flex: none; }
.icon-lg { width: 32px; height: 32px; }
.icon-end { margin-left: auto; color: var(--muted); }

/* Cards */
.card { background: var(--paper); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-flat { box-shadow: none; border: 1px solid var(--line); padding: 18px; margin-bottom: 14px; }

/* Pills */
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; font-size: 13px; font-weight: 600; line-height: 1; }
.pill-sm { padding: 5px 10px; font-size: 12px; }
.pill-amber { background: var(--amber-soft); color: var(--amber-ink); border: 1px solid #ecd28a; }
.pill-green { background: var(--green); color: var(--green-ink); }
.pill-charcoal { background: var(--teal); color: #fff; }
.pill-grey { background: var(--grey-soft); color: var(--ink-2); }

/* Buttons: 44px hit targets */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 16px; border-radius: 12px; border: 1px solid transparent; font: inherit; font-weight: 600; font-size: 15px; cursor: pointer; text-decoration: none; background: var(--paper); color: var(--ink); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: #1a00d6; }
.btn-amber { background: var(--amber); color: #2b1f00; }
.btn-green { background: var(--green); color: var(--green-ink); }
.btn-ghost { border-color: var(--line); background: var(--paper); }
.btn-ghost:hover { background: var(--grey-soft); }
.btn-block { width: 100%; }
.btn-sm { min-height: 36px; padding: 6px 12px; font-size: 13px; }
.btn[disabled] { opacity: 0.55; cursor: default; }
.backlink { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; text-decoration: none; color: var(--ink-2); font-size: 14px; }

/* Simulated pass */
.page-pass .wrap { padding-top: 12px; }
.sim-note { text-align: center; color: var(--muted); font-size: 12px; margin-bottom: 10px; letter-spacing: 0.02em; }
.pass { position: relative; overflow: hidden; transition: box-shadow 0.4s ease; }
.pass.flipped .front { display: none; }
.pass .back { display: none; }
.pass.flipped .back { display: block; }
.pass.just-updated { animation: pulse 1.2s ease; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(31,0,255,0.0); } 30% { box-shadow: 0 0 0 10px rgba(31,0,255,0.22); } 100% { box-shadow: var(--shadow); } }
.pass-face { padding: 20px 20px 16px; }
.pass-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; padding-bottom: 12px; border-bottom: 3px solid var(--blue); }
.wordmark { font-weight: 700; font-size: 17px; letter-spacing: -0.02em; }
.wordmark-logo { height: 18px; width: auto; display: block; }
.campus { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-2); }
.pass .pill { margin-bottom: 16px; }
.rows { display: grid; gap: 12px; margin-bottom: 16px; }
.row { display: grid; grid-template-columns: 1.3fr 1fr; gap: 12px; }
.field { display: grid; gap: 2px; min-width: 0; }
.label { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.value { font-size: 16px; font-weight: 600; overflow-wrap: anywhere; }
.value.muted { font-weight: 500; }
.sub { font-size: 13px; color: var(--ink-2); }
.code-area { border-radius: 16px; padding: 18px; display: grid; justify-items: center; gap: 8px; text-align: center; background: var(--green-soft); }
.code-area.locked { background: var(--amber-soft); color: var(--amber-ink); border: 1px dashed #ecd28a; }
.code-area.locked .btn { margin-top: 6px; }
.code-area.dim .qr { opacity: 0.35; }
.code-area-text { display: grid; gap: 2px; }
.code-area-text strong { color: var(--ink); }
.code-area-text span { font-size: 13px; }
.qr { width: 180px; height: 180px; background: #fff; border-radius: 12px; padding: 10px; }
.qr svg { width: 100%; height: 100%; display: block; }
.code-text { font-size: 20px; font-weight: 600; color: var(--ink); }
.code-hint { font-size: 12px; color: var(--ink-2); }
.itin { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.itin-head { display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.itin-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.itin-list li { display: grid; grid-template-columns: 52px 1fr; gap: 8px; font-size: 14px; }
.itin-time { font-family: var(--mono); font-size: 13px; color: var(--ink-2); }
.flip { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; margin-top: 10px; padding: 0 4px; border: 0; background: none; font: inherit; font-size: 13px; font-weight: 600; color: var(--ink-2); cursor: pointer; }
.back-ack { display: flex; align-items: center; gap: 8px; padding: 12px 14px; border-radius: 12px; background: var(--green-soft); color: var(--ink); font-size: 14px; font-weight: 500; margin-bottom: 14px; }
.back-ack.pending { background: var(--amber-soft); color: var(--amber-ink); }
.back-links { display: grid; }
.back-links a { display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 6px 4px; border-top: 1px solid var(--line); text-decoration: none; font-weight: 500; font-size: 15px; }
.back-links a:last-child { border-bottom: 1px solid var(--line); }
.back-meta { margin-top: 12px; font-size: 12px; color: var(--muted); }

/* Briefing */
.summary { display: grid; gap: 8px; margin: 0 0 16px; }
.summary div { display: grid; grid-template-columns: 110px 1fr; gap: 8px; align-items: baseline; }
.summary dt { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.summary dd { margin: 0; font-weight: 500; overflow-wrap: anywhere; }
.nda-head { display: flex; align-items: center; gap: 8px; font-weight: 600; margin-bottom: 10px; }
.tag { margin-left: auto; font-size: 12px; background: var(--grey-soft); padding: 3px 8px; border-radius: 6px; }
.nda-body { max-height: 320px; overflow: auto; padding: 4px 12px 4px 0; font-size: 14px; color: var(--ink-2); border-top: 1px solid var(--line); }
.nda-body h2 { font-size: 16px; color: var(--ink); margin: 14px 0 6px; }
.nda-body h3 { font-size: 14px; color: var(--ink); margin: 12px 0 4px; }
.nda-body p { margin: 8px 0; }
.nda-body ul { padding-left: 20px; margin: 8px 0; }
.ack-form { display: grid; gap: 10px; }
.check { display: flex; align-items: flex-start; gap: 12px; min-height: 44px; padding: 10px 12px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; cursor: pointer; font-size: 15px; }
.check input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.check .box { width: 24px; height: 24px; flex: none; border-radius: 7px; border: 1.5px solid var(--grey); display: inline-flex; align-items: center; justify-content: center; color: transparent; margin-top: 1px; }
.check input:checked + .box { background: var(--green); border-color: var(--green); color: #fff; }
.check input:focus-visible + .box { outline: 2px solid var(--ink); outline-offset: 2px; }
.text-field { display: grid; gap: 6px; }
.text-field input, .text-field select, .text-field textarea { min-height: 44px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 12px; font: inherit; font-size: 16px; background: var(--paper); color: var(--ink); width: 100%; }
.text-field textarea { font-family: var(--mono); font-size: 14px; line-height: 1.5; }
.text-field input:focus, .text-field textarea:focus, .text-field select:focus { outline: 2px solid var(--ink); outline-offset: 1px; }
.hint { font-size: 12px; color: var(--muted); }
.alert { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-radius: 12px; background: var(--amber-soft); color: var(--amber-ink); font-size: 14px; font-weight: 500; }
.alert-ok { background: var(--green-soft); color: var(--ink); }

/* Scanner */
.wrap.scan { max-width: 560px; }
.scan-head, .admin-head, .home-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.scan-form { display: grid; gap: 12px; margin-bottom: 14px; }
.scan-form input { font-size: 22px; text-transform: uppercase; }
.scan-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cam { margin-bottom: 14px; border-radius: 16px; overflow: hidden; background: var(--ink); }
.cam video { width: 100%; display: block; max-height: 360px; object-fit: cover; }
.cam .hint { color: #fff; padding: 8px 12px; margin: 0; }
.result { min-height: 200px; }
.result-empty { text-align: center; padding: 40px 20px; display: grid; justify-items: center; gap: 10px; }
.result-card { border-radius: var(--radius); padding: 22px; color: var(--ink); border: 1px solid var(--line); background: var(--paper); }
.result-card.ready { border-color: var(--green); background: var(--green-soft); }
.result-card.incomplete { border-color: var(--amber); background: var(--amber-soft); }
.result-card.unknown, .result-card.expired { background: var(--grey-soft); }
.result-card.checked_in { background: var(--paper); }
.result-title { font-size: 24px; font-weight: 700; margin: 12px 0 6px; }
.result-card .summary { margin-top: 12px; }
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

/* Admin & home */
.admin-nav { display: flex; gap: 14px; }
.admin-nav a { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; text-decoration: none; font-weight: 500; font-size: 14px; }
.admin-form { display: grid; gap: 12px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.grid-admin { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; align-items: start; }
.qr-admin { width: 220px; height: 220px; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 10px; }
.qr-admin svg { width: 100%; height: 100%; display: block; }
.links { display: grid; gap: 8px; margin: 12px 0; }
.links dt { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.links dd { margin: 0; font-size: 13px; overflow-wrap: anywhere; }
.admin-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; padding: 8px 8px 8px 0; border-bottom: 1px solid var(--line); }
.table td { padding: 10px 8px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap { overflow-x: auto; }
.home-head { flex-direction: column; align-items: flex-start; gap: 10px; margin-bottom: 24px; }
.home-head .wordmark { font-size: 28px; }
.lede { font-size: 17px; color: var(--ink-2); max-width: 640px; }
.home-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; }
.step { display: flex; gap: 12px; align-items: flex-start; margin: 0; }
.step-n { width: 26px; height: 26px; border-radius: 50%; background: var(--blue); color: #fff; font-size: 13px; font-weight: 600; display: inline-flex; align-items: center; justify-content: center; flex: none; }
.step p { font-size: 14px; color: var(--ink-2); margin-top: 2px; }
@media (max-width: 420px) {
  .row { grid-template-columns: 1fr; }
  .summary div { grid-template-columns: 1fr; gap: 2px; }
}
@media print {
  body { background: #fff; }
  .scan-form, .cam, .scan-head, .result-actions { display: none !important; }
}

/* Presenter screen */
.demo { max-width: 1280px; margin: 0 auto; padding: 20px 20px 48px; }
.demo-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.demo-pick { display: flex; align-items: center; gap: 10px; }
.demo-pick select { min-height: 40px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 10px; font: inherit; background: var(--paper); }
.demo-grid { display: grid; grid-template-columns: 440px 1fr; gap: 28px; align-items: start; }
.phone-col { position: sticky; top: 16px; }
.phone-label { display: flex; align-items: center; gap: 6px; font-weight: 600; margin-bottom: 10px; }
.phone-frame { position: relative; width: 414px; height: 860px; margin: 0 auto; background: #0b1218; border-radius: 48px; padding: 12px; box-shadow: 0 30px 60px rgba(20,32,43,0.28), inset 0 0 0 2px #2a3742; }
.phone-frame iframe { width: 100%; height: 100%; border: 0; border-radius: 38px; background: var(--bg); display: block; }
.phone-tools { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 12px; }
.qr-box { margin-top: 12px; display: grid; justify-items: center; gap: 6px; text-align: center; }
.demo-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.dstep-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.dstep-head strong { font-size: 16px; }
.who { margin-left: auto; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.dstep p { color: var(--ink-2); font-size: 15px; margin-bottom: 8px; }
.dstep em { font-style: normal; font-weight: 600; color: var(--ink); }
.admin-form.compact { gap: 10px; margin-top: 8px; }
.row-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.scan-mini { margin-top: 12px; }
.scan-mini .result-card { padding: 16px; }
.scan-mini .result-title { font-size: 18px; margin: 8px 0 4px; }
@media (max-width: 980px) {
  .demo-grid { grid-template-columns: 1fr; }
  .phone-col { position: static; }
  .phone-frame { width: 100%; max-width: 414px; height: 760px; }
}

.lost-btn { margin-top: 10px; }
.ash-head { display: flex; align-items: center; gap: 12px; margin: 6px 0 12px; }
.ash-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--blue); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 18px; }
.page-help .ack-form { margin-top: 16px; }

/* Signature pad */
.sig-wrap { display: grid; gap: 6px; }
.sig-pad { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; height: 150px; overflow: hidden; touch-action: none; }
.sig-pad canvas { width: 100%; height: 100%; display: block; }
.sig-line { position: absolute; left: 16px; right: 16px; bottom: 34px; border-top: 1px dashed var(--grey); pointer-events: none; }
.sig-clear { position: absolute; top: 8px; right: 8px; min-height: 32px; padding: 4px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); font: inherit; font-size: 12px; font-weight: 600; color: var(--ink-2); cursor: pointer; }
.sig-shown { margin-top: 10px; display: grid; gap: 4px; }
.sig-shown img { width: 100%; max-width: 320px; height: auto; border: 1px solid var(--line); border-radius: 12px; background: #fff; }

/* Arrival guide */
.map-embed { position: relative; border-radius: 16px; overflow: hidden; border: 1px solid var(--line); height: 240px; margin: 12px 0; background: var(--grey-soft); }
.map-embed iframe { width: 100%; height: 100%; border: 0; display: block; }
.map-pin-label { position: absolute; left: 10px; top: 10px; display: inline-flex; align-items: center; gap: 6px; background: var(--paper); color: var(--ink); padding: 6px 10px; border-radius: 999px; font-size: 13px; font-weight: 600; box-shadow: var(--shadow); }
.arrive-address { display: grid; gap: 2px; margin-bottom: 12px; }
.arrive-address .value { font-size: 17px; font-weight: 600; }
.arrive-actions { display: grid; gap: 8px; margin-bottom: 16px; }
.arrive-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.arrive-steps li { padding: 0; overflow: hidden; }
.arrive-steps li strong { display: block; padding: 12px 16px 0; }
.arrive-steps li p { padding: 4px 16px 14px; color: var(--ink-2); font-size: 14px; }
.arrive-photo { height: 120px; background-size: cover; background-position: center; }