/* LogInject USENIX Security 2026 talk — design system (1280x720, 16:9)
   Light "projection" theme: high-contrast dark-on-light for bright rooms.
   Terminal/log blocks intentionally remain dark for code legibility. */

/* Self-hosted IBM Plex (OFL) — embedded into the PDF at render time */
@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/IBMPlexSans-400.ttf") format("truetype");
  font-weight: 400;
  font-display: block;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/IBMPlexSans-500.ttf") format("truetype");
  font-weight: 500;
  font-display: block;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/IBMPlexSans-600.ttf") format("truetype");
  font-weight: 600;
  font-display: block;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/IBMPlexSans-700.ttf") format("truetype");
  font-weight: 700;
  font-display: block;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: block;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-500.woff2") format("woff2");
  font-weight: 500;
  font-display: block;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-600.woff2") format("woff2");
  font-weight: 600;
  font-display: block;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-700.ttf") format("truetype");
  font-weight: 700;
  font-display: block;
}

:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --panel-2: #f1f5f9;
  --border: #e2e8f0;
  --border-2: #cbd5e1;
  --text: #0f172a;
  --muted: #475569;
  --faint: #64748b;
  --red: #dc2626;
  --red-dim: #991b1b;
  --teal: #0d9488;
  --blue: #2563eb;
  --amber: #b45309;
  --purple: #7c3aed;
  --green: #059669;
  --mono: "IBM Plex Mono", "SF Mono", Menlo, Monaco, "Cascadia Code", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.slide {
  width: 1280px;
  height: 720px;
  position: relative;
  overflow: hidden;
  page-break-after: always;
  break-after: page;
  padding: 56px 64px 64px;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(37, 99, 235, 0.055), transparent 60%),
    radial-gradient(900px 480px at -10% 110%, rgba(220, 38, 38, 0.04), transparent 55%),
    repeating-linear-gradient(0deg, rgba(15, 23, 42, 0.022) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, rgba(15, 23, 42, 0.022) 0 1px, transparent 1px 56px),
    var(--bg);
}
.slide:last-child { page-break-after: auto; break-after: auto; }

@page { size: 1280px 720px; margin: 0; }
@media print {
  html, body { margin: 0; padding: 0; }
  .slide { margin: 0; box-shadow: none; }
}

/* ---------- typography ---------- */
.kicker {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}
.kicker.red { color: var(--red); }
.kicker.teal { color: var(--teal); }
.kicker.amber { color: var(--amber); }

h1.title {
  font-size: 42px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}
h1.title .accent { color: var(--red); }
h1.title .accent-blue { color: var(--blue); }
h1.title .accent-teal { color: var(--teal); }

.subtitle {
  font-size: 21px;
  color: var(--muted);
  line-height: 1.45;
  max-width: 1050px;
}
.subtitle b, .subtitle strong { color: var(--text); }

/* ---------- footer ---------- */
.footer {
  position: absolute;
  bottom: 22px;
  left: 64px;
  right: 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--faint);
  letter-spacing: 0.04em;
}
.footer .f-title { font-weight: 600; }
.footer .f-cite {
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
  letter-spacing: 0.02em;
}

/* ---------- layout helpers ---------- */
.row { display: flex; gap: 28px; align-items: stretch; }
.col { flex: 1; min-width: 0; }
.grow { flex: 1; }
.center { display: flex; flex-direction: column; align-items: center; justify-content: center; }
.mt-auto { margin-top: auto; }
.mt { margin-top: 22px; }
.mt-lg { margin-top: 36px; }

/* ---------- cards ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 26px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}
.card.red { border-color: rgba(220, 38, 38, 0.4); background: rgba(220, 38, 38, 0.05); }
.card.green { border-color: rgba(5, 150, 105, 0.4); background: rgba(5, 150, 105, 0.05); }
.card.blue { border-color: rgba(37, 99, 235, 0.35); background: rgba(37, 99, 235, 0.04); }
.card.amber { border-color: rgba(180, 83, 9, 0.35); background: rgba(180, 83, 9, 0.04); }
.card.purple { border-color: rgba(124, 58, 237, 0.35); background: rgba(124, 58, 237, 0.04); }
.card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}
.card p, .card li { font-size: 17px; line-height: 1.5; color: var(--muted); }
.card p b { color: var(--text); }

/* ---------- big stats ---------- */
.stat { text-align: center; padding: 10px 8px; }
.stat .num {
  font-size: 64px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.stat .num.red { color: var(--red); }
.stat .num.teal { color: var(--teal); }
.stat .num.blue { color: var(--blue); }
.stat .num.amber { color: var(--amber); }
.stat .num.purple { color: var(--purple); }
.stat .num.green { color: var(--green); }
.stat .lbl {
  font-size: 16px;
  color: var(--muted);
  margin-top: 8px;
  line-height: 1.4;
}

/* ---------- terminal / logs (dark by design) ---------- */
.term {
  background: #0a0f1c;
  border: 1px solid #2b3b55;
  border-radius: 12px;
  overflow: hidden;
  font-family: var(--mono);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: #131c30;
  border-bottom: 1px solid #1e293b;
}
.term-bar .dot { width: 11px; height: 11px; border-radius: 50%; }
.term-bar .dot.r { background: #ff5f57; }
.term-bar .dot.y { background: #febc2e; }
.term-bar .dot.g { background: #28c840; }
.term-bar .term-title {
  margin-left: 10px;
  font-size: 13px;
  color: #94a3b8;
  font-family: var(--mono);
}
.term-body { padding: 16px 20px; font-size: 16.5px; line-height: 1.62; }
.term-body .ln { color: #cbd5e1; white-space: pre-wrap; word-break: break-word; }
.term-body .dim { color: #94a3b8; }
.term-body .payload {
  color: #fecaca;
  background: rgba(248, 113, 113, 0.16);
  border-bottom: 1px solid #f87171;
  padding: 0 2px;
  border-radius: 3px;
}
.term-body .ok { color: #34d399; }
.term-body .warn { color: #fbbf24; }
.term-body .ai { color: #60a5fa; }

/* ---------- badges & chips ---------- */
.badge {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 999px;
  text-transform: uppercase;
}
.badge.red { color: #b91c1c; background: rgba(220, 38, 38, 0.09); border: 1px solid rgba(220, 38, 38, 0.4); }
.badge.green { color: #047857; background: rgba(5, 150, 105, 0.09); border: 1px solid rgba(5, 150, 105, 0.4); }
.badge.blue { color: #1d4ed8; background: rgba(37, 99, 235, 0.09); border: 1px solid rgba(37, 99, 235, 0.4); }
.badge.amber { color: #b45309; background: rgba(180, 83, 9, 0.09); border: 1px solid rgba(180, 83, 9, 0.4); }

.chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 14px;
  padding: 3px 10px;
  border-radius: 6px;
  background: #eef2f7;
  border: 1px solid var(--border-2);
  color: var(--text);
}

/* ---------- flow diagram ---------- */
.flow { display: flex; align-items: center; gap: 0; }
.flow .node {
  background: var(--panel);
  border: 1.5px solid var(--border-2);
  border-radius: 12px;
  padding: 16px 18px;
  text-align: center;
  font-size: 16.5px;
  font-weight: 650;
  line-height: 1.3;
}
.flow .node small { display: block; font-size: 13px; color: var(--muted); font-weight: 500; margin-top: 4px; }
.flow .node.red { border-color: var(--red); color: #b91c1c; background: rgba(220, 38, 38, 0.06); }
.flow .node.blue { border-color: var(--blue); }
.flow .node.teal { border-color: var(--teal); }
.flow .arrow {
  flex: 0 0 auto;
  width: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--faint);
  font-size: 26px;
  position: relative;
}
.flow .stepnum {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11.5px;
  font-weight: 800;
  color: #ffffff;
  background: var(--amber);
  border-radius: 50%;
  width: 19px;
  height: 19px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zone {
  border: 1.5px dashed var(--border-2);
  border-radius: 16px;
  padding: 18px 20px 20px;
  position: relative;
}
.zone .zone-label {
  position: absolute;
  top: -13px;
  left: 20px;
  background: var(--bg);
  padding: 0 10px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.zone.red { border-color: rgba(220, 38, 38, 0.5); }
.zone.red .zone-label { color: var(--red); }
.zone.teal { border-color: rgba(13, 148, 136, 0.45); }
.zone.teal .zone-label { color: var(--teal); }

/* ---------- images ---------- */
.img-frame {
  border: 1px solid var(--border-2);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.07);
}
.img-frame img { display: block; width: 100%; }
.img-cap {
  font-size: 13.5px;
  color: var(--faint);
  margin-top: 8px;
  line-height: 1.4;
}
.img-cap b { color: var(--muted); }

.chart-img {
  width: 100%;
  display: block;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
  /* Shrink to the space left by the headline and takeaway strip so a long
     title wrapping to a second line can never push content under the footer. */
  flex: 1 1 auto;
  min-height: 0;
  object-fit: contain;
}

/* ---------- quote ---------- */
.bigquote {
  font-size: 46px;
  font-weight: 750;
  line-height: 1.3;
  letter-spacing: -0.01em;
  max-width: 1080px;
}
.bigquote .accent { color: var(--red); }

/* ---------- lists ---------- */
.clean { list-style: none; }
.clean li {
  font-size: 19px;
  line-height: 1.5;
  color: var(--muted);
  padding-left: 30px;
  position: relative;
  margin-bottom: 14px;
}
.clean li::before {
  content: "▸";
  position: absolute;
  left: 4px;
  color: var(--blue);
}
.clean li b { color: var(--text); }
.clean li.red-marker::before { color: var(--red); }
.clean li.teal-marker::before { color: var(--teal); }

/* ---------- tables ---------- */
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 15.5px;
  background: var(--panel);
}
table.data th {
  text-align: left;
  color: var(--muted);
  font-weight: 700;
  font-size: 13.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 8px 12px;
  border-bottom: 1.5px solid var(--border-2);
}
table.data td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
table.data td.num { font-family: var(--mono); }
table.data tr.hot td { background: rgba(220, 38, 38, 0.06); }

/* ---------- misc ---------- */
.divider { height: 1px; background: var(--border); margin: 20px 0; }
.takeaway-strip {
  margin-top: auto;
  background: linear-gradient(90deg, rgba(220, 38, 38, 0.09), rgba(220, 38, 38, 0.03));
  border: 1px solid rgba(220, 38, 38, 0.4);
  border-radius: 12px;
  padding: 15px 22px;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 650;
  color: #b91c1c;
}
.takeaway-strip.blue {
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.09), rgba(37, 99, 235, 0.03));
  border-color: rgba(37, 99, 235, 0.4);
  color: #1d4ed8;
}
.takeaway-strip.teal {
  background: linear-gradient(90deg, rgba(13, 148, 136, 0.09), rgba(13, 148, 136, 0.03));
  border-color: rgba(13, 148, 136, 0.4);
  color: #0f766e;
}
.two-col-list { display: flex; gap: 40px; }
.two-col-list > div { flex: 1; }

/* ---------- title-slide affiliation logos ---------- */
.affil-logos { display: flex; gap: 22px; align-items: center; justify-content: center; }
.logo-chip {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 22px;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.logo-chip img { height: 38px; width: auto; display: block; }

/* ---------- QR blocks ---------- */
.qr-row { display: flex; gap: 30px; justify-content: center; align-items: stretch; }
.qr-block {
  background: #ffffff;
  border: 1px solid var(--border-2);
  border-radius: 14px;
  padding: 16px 18px 14px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.07);
}
.qr-block img { display: block; width: 150px; height: 150px; margin: 0 auto; }
.qr-block .qr-label { margin-top: 10px; font-size: 15px; font-weight: 700; color: #0f172a; }
.qr-block .qr-url {
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 11px;
  color: #475569;
  word-break: break-all;
  max-width: 220px;
  line-height: 1.4;
}
.qr-row.three { gap: 22px; }
.qr-row.three .qr-block { width: 270px; padding: 18px 16px 14px; }
.qr-row.three .qr-block img { width: 166px; height: 166px; }
.qr-row.three .qr-block .qr-url {
  max-width: 250px;
  word-break: normal;
  overflow-wrap: break-word;
  font-size: 11px;
  line-height: 1.45;
}
a { color: inherit; text-decoration: none; }

/* ---------- attack-path strip (slide 4) ---------- */
.attack-path {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
}
.ap-step {
  background: var(--panel);
  border: 1.5px solid var(--border-2);
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 15.5px;
  font-weight: 650;
  color: var(--text);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.ap-step.red { border-color: var(--red); color: #b91c1c; background: rgba(220, 38, 38, 0.07); }
.ap-arrow { color: var(--faint); font-size: 22px; }

/* ---------- token stream (slide 6) ---------- */
.token-stream {
  display: flex;
  gap: 5px;
  justify-content: center;
  margin-top: 12px;
  flex-wrap: wrap;
}
.tok {
  font-family: var(--mono);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1.5px solid var(--border-2);
  background: var(--panel-2);
  color: var(--muted);
}
.tok.trusted { border-color: var(--teal); color: #0f766e; background: rgba(13, 148, 136, 0.08); }
.tok.hostile { border-color: var(--red); color: #b91c1c; background: rgba(220, 38, 38, 0.12); font-weight: 700; }
.token-note {
  margin-top: 7px;
  font-size: 12.5px;
  color: var(--red);
  font-weight: 650;
  letter-spacing: 0.04em;
}

/* ---------- assembly visual (slide 10) ---------- */
.assembly-note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: 10px;
  background: rgba(180, 83, 9, 0.07);
  border: 1px solid rgba(180, 83, 9, 0.4);
  font-size: 14.5px;
  color: var(--amber);
  font-weight: 650;
}
.assembly-note .frag { font-family: var(--mono); font-size: 12.5px; padding: 2px 8px; border-radius: 5px; background: #fff; border: 1px solid var(--border-2); color: var(--muted); }
.assembly-note .arrow { color: var(--amber); font-size: 18px; }

.algorithm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.algorithm-step {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 88px;
  padding: 16px 20px;
  border: 1px solid var(--border-2);
  border-radius: 12px;
  background: var(--panel);
  color: var(--muted);
  font-size: 17px;
  line-height: 1.35;
}
.algorithm-step b {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: #fff;
  background: var(--amber);
  font-size: 20px;
}

.compact-artifact h1.title { margin-bottom: 8px; }
.compact-artifact .row { margin-top: 4px !important; }
.compact-artifact .row > div:first-child { gap: 9px !important; }
.compact-artifact .card { padding: 14px 19px; }
.compact-artifact .card h3 { margin-bottom: 4px; }
.compact-artifact .card p,
.compact-artifact .card li { font-size: 15px; line-height: 1.35; }
.compact-artifact .clean li { margin-bottom: 5px; }
.compact-artifact .qr-block { padding: 11px 13px 9px; }
.compact-artifact .qr-block img { width: 130px; height: 130px; }
.compact-artifact .takeaway-strip { padding: 10px 16px; font-size: 15px; }

.objective-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }

.level-flow { display: flex; gap: 22px; align-items: stretch; }
.level-card {
  flex: 1;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  position: relative;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}
.level-card .lvl {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.level-card h3 { font-size: 21px; margin-bottom: 10px; }
.level-card p { font-size: 15.5px; color: var(--muted); line-height: 1.5; }
.level-arrow {
  display: flex;
  align-items: center;
  color: var(--faint);
  font-size: 24px;
}