/* =========================================================
   TechDays: AI Fluency - Agentic Agents · Training Deck
   PATTERSON COMPANIES design system.
   Light (Patterson) base · navy dark override.
   ========================================================= */

/* Design-system tokens. Element defaults (base.css) are deliberately NOT
   imported — the deck owns its own element styling. */
@import url('_ds/patterson-design-system-3534f94f-a7e6-4612-81d4-6e830716f07d/tokens/fonts.css');
@import url('_ds/patterson-design-system-3534f94f-a7e6-4612-81d4-6e830716f07d/tokens/colors.css');
@import url('_ds/patterson-design-system-3534f94f-a7e6-4612-81d4-6e830716f07d/tokens/typography.css');
@import url('_ds/patterson-design-system-3534f94f-a7e6-4612-81d4-6e830716f07d/tokens/spacing.css');
@import url('_ds/patterson-design-system-3534f94f-a7e6-4612-81d4-6e830716f07d/tokens/effects.css');

:root {
  --font-body: var(--font-sans);
  --font-label: var(--font-sans);

  --type-scale: 1;
  --el-display: 1; --el-title: 1; --el-body: 1; --el-eyebrow: 1; --el-mono: 1;
  --track-label: .12em;
  --type-display:  calc(6rem    * var(--type-scale) * var(--el-display));
  --type-title:    calc(3.75rem * var(--type-scale) * var(--el-title));
  --type-h2:       calc(2.75rem * var(--type-scale) * var(--el-title));
  --type-subtitle: calc(1.875rem* var(--type-scale) * var(--el-body));
  --type-body:     calc(1.5rem  * var(--type-scale) * var(--el-body));
  --type-small:    calc(1.5rem  * var(--type-scale) * var(--el-body));
  --type-eyebrow:  calc(1.5rem  * var(--type-scale) * var(--el-eyebrow));
  --type-mono-lg:  calc(1.375rem* var(--type-scale) * var(--el-mono));
  --type-mono:     calc(1.5rem  * var(--type-scale) * var(--el-mono));

  --pad-top:    72px;
  --pad-bottom: 56px;
  --pad-x:      110px;
  --gap-item:   28px;
  --rule-w:     1.5px;
  /* Patterson slides are flat rectangles — no rounded corners */
  --card-radius: 0px;

  /* Patterson (light) theme — white surfaces, navy ink, sky accent */
  --paper:    var(--pat-white);
  --paper-2:  var(--pat-gray-50);    /* card surface */
  --paper-3:  var(--pat-navy-10);   /* code / inset surface */
  --ink:      var(--pat-navy);      /* headings */
  --ink-2:    var(--pat-gray-700);  /* body copy */
  --ink-dim:  var(--pat-gray-600);  /* muted */
  --ink-faint:var(--pat-gray-500);  /* faint labels */
  --rule:     var(--border-subtle);
  --rule-2:   var(--border-default);
  --accent-raw: var(--pat-sky);
  --accent:   var(--pat-blue);     /* #147EC2 — the master's title blue, legible on white */
  --accent-2: var(--pat-purple);   /* code strings / secondary */
  --stage-bg: var(--pat-navy);
  --logo-url: url('assets/brand/patterson-logo-navy.svg');
}

[data-theme="dark"] {
  /* Patterson navy variant — navy surfaces, white ink, sky accent */
  --paper:    var(--pat-navy);
  --paper-2:  #0c4676;   /* raised navy panel */
  --paper-3:  #08355f;   /* code / inset */
  --ink:      var(--pat-white);
  --ink-2:    #d3e0ec;
  --ink-dim:  var(--pat-navy-40);
  --ink-faint:var(--pat-navy-60);
  --rule:     rgba(255,255,255,.18);
  --rule-2:   rgba(255,255,255,.34);
  --accent-raw: var(--pat-sky);
  --accent:   var(--pat-sky);
  --accent-2: var(--pat-blue-light);
  --shadow-sm: 0 1px 3px rgba(0,0,0,.25), 0 1px 2px rgba(0,0,0,.2);
  --shadow-lg: 0 16px 34px rgba(0,0,0,.4);
  --stage-bg: #01243f;
  --logo-url: url('assets/brand/patterson-logo-white.svg');
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--type-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

deck-stage { background: var(--stage-bg); }

deck-stage section {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  position: relative;
  overflow: hidden;
}

deck-stage section > * { position: relative; z-index: 1; }

/* Navy statement slides — the master's wave field, used on dividers and
   full-bleed statements. Light slides stay plain white. */
deck-stage section[data-theme="dark"] {
  background-image: url('assets/brand/wave-bg-navy.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* =========================================================
   Slide chrome
   ========================================================= */
.frame {
  position: absolute;
  inset: 0;
  padding: var(--pad-top) var(--pad-x) var(--pad-bottom);
  display: flex;
  flex-direction: column;
}
.head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink-dim);
  padding-bottom: 22px;
  border-bottom: var(--rule-w) solid var(--rule);
}
.head::before {
  content: "";
  flex: none;
  width: 118px;
  height: 26px;
  margin-right: 30px;
  background: var(--logo-url) left center / contain no-repeat;
}
.head .crumb { display: flex; gap: 28px; align-items: center; }
.head .crumb .dot { width: 10px; height: 10px; background: var(--accent); display: inline-block; }
.head .pg { color: var(--ink-faint); margin-left: auto; }
.head .brand-mark { height: 26px; width: auto; display: block; }
.foot {
  margin-top: auto;
  padding-top: 22px;
  border-top: var(--rule-w) solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink-dim);
}
.foot .row { display: flex; gap: 32px; min-width: 0; }
.foot > *:last-child { flex: none; margin-left: 40px; }
.foot .col-label { color: var(--ink-faint); margin-right: 10px; }
.body {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 40px 0 28px;
  min-height: 0;
  overflow: hidden;
}

/* =========================================================
   Type primitives
   ========================================================= */
.eyebrow {
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}
.title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--type-title);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.title em { font-style: normal; color: var(--accent); font-weight: 700; }
.subtitle {
  font-family: var(--font-body);
  font-weight: 400;
  font-style: normal;
  font-size: var(--type-subtitle);
  line-height: 1.3;
  color: var(--ink-2);
  max-width: 1400px;
}
.body-copy { font-size: var(--type-body); line-height: 1.55; color: var(--ink-2); max-width: 1400px; }
.body-copy + .body-copy { margin-top: 24px; }
.small { font-size: var(--type-small); color: var(--ink-dim); }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }
.title-rule {
  width: 96px;
  height: 4px;
  margin-top: 28px;
  background: var(--accent);
}

/* =========================================================
   Cover
   ========================================================= */
.cover-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 22px;
  border-bottom: var(--rule-w) solid var(--rule);
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.cover-head .brand-mark { width: 156px; height: 34px; display: block; background: var(--logo-url) left center / contain no-repeat; }
.cover-head .left { display: flex; align-items: center; gap: 24px; }
.cover-head .stamp {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 7px 16px 6px;
  letter-spacing: .16em;
  font-weight: 600;
}
[data-theme="dark"] .cover-head .stamp { color: var(--paper); }
.cover-body {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  padding: 50px 0 32px;
  min-height: 0;
}
.cover-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 146px;
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.cover-title .accent { font-style: normal; font-weight: 700; color: var(--accent); }
.cover-sub {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 34px;
  line-height: 1.35;
  color: var(--ink-2);
  margin-top: 30px;
  max-width: 1150px;
}
.cover-mark {
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-end;
}
.cover-mark .seal {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 700;
  font-size: 64px;
  letter-spacing: -0.02em;
  color: var(--accent);
  text-transform: none;
}
.cover-foot {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  padding-top: 22px;
  border-top: var(--rule-w) solid var(--rule);
  font-family: var(--font-label);
  font-size: var(--type-mono);
  color: var(--ink);
}
.cover-foot .field { display: flex; flex-direction: column; gap: 6px; }
.cover-foot .lbl { font-size: var(--type-eyebrow); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-faint); }
.cover-foot .val { color: var(--ink); }

/* =========================================================
   Module divider
   ========================================================= */
.divider .body { justify-content: center; align-items: flex-start; padding: 20px 0; }
.divider-grid {
  display: grid;
  grid-template-columns: 440px 1fr;
  gap: 70px;
  align-items: center;
  width: 100%;
}
.module-numeral {
  font-family: var(--font-display);
  font-size: 380px;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--ink);
  font-weight: 700;
}
.module-numeral .accent { font-style: normal; font-weight: 700; color: var(--accent); }
.divider .title { font-size: 108px; letter-spacing: -0.025em; }
.divider .subtitle { margin-top: 28px; max-width: 1000px; }
.divider-meta {
  margin-top: 56px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-family: var(--font-label);
  font-size: var(--type-small);
  color: var(--ink-dim);
}
.divider-meta .row { display: flex; gap: 24px; align-items: baseline; }
.divider-meta .lbl { color: var(--ink-faint); width: 215px; white-space: nowrap; letter-spacing: .14em; text-transform: uppercase; font-size: var(--type-eyebrow); }
.divider-meta .val { color: var(--ink); }

/* =========================================================
   Layout helpers
   ========================================================= */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.two-col.narrow-left { grid-template-columns: 7fr 9fr; }
.two-col.narrow-right { grid-template-columns: 9fr 7fr; }

.card-grid { display: grid; gap: 24px; }
.card-grid.cols-2 { grid-template-columns: 1fr 1fr; }
.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.card {
  border: 1px solid var(--rule);
  border-top: 3px solid var(--accent);
  border-radius: var(--card-radius);
  padding: 26px 28px 26px;
  background: var(--paper-2);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 0;
}
.card .num {
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .16em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
}
.card .name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 44px;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.card .desc { font-size: var(--type-small); line-height: 1.45; color: var(--ink-2); }
.card .bd-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card .bd-list li {
  position: relative;
  padding-left: 26px;
  font-size: var(--type-small);
  line-height: 1.4;
  color: var(--ink-2);
}
.card .bd-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.55em;
  width: 12px;
  height: 12px;
  background: var(--accent);
}
.card .pill {
  font-family: var(--font-label);
  font-size: 24px;
  letter-spacing: .06em;
  color: var(--ink-dim);
  border-top: 1px solid var(--rule);
  padding-top: 12px;
  margin-top: auto;
}

/* Matrix table */
.matrix { width: 100%; border-collapse: collapse; font-size: var(--type-small); }
.matrix th, .matrix td {
  text-align: left;
  vertical-align: top;
  padding: 16px 22px;
  border-bottom: 1px solid var(--rule);
}
.matrix thead th {
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  white-space: nowrap;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom: 1.5px solid var(--rule-2);
  padding-bottom: 14px;
  padding-top: 0;
}
.matrix tbody tr:last-child td { border-bottom: none; }
.matrix .task { font-family: var(--font-display); font-weight: 700; font-size: 33px; line-height: 1.08; letter-spacing: -0.015em; color: var(--ink); }
.matrix .surface { font-family: var(--font-mono); color: var(--accent); font-size: 24px; letter-spacing: .02em; }
.matrix .why { color: var(--ink-2); }
.matrix .mono { font-size: 24px; }

/* Pullquote */
.pullquote {
  font-family: var(--font-display);
  font-size: 92px;
  font-style: normal;
  font-weight: 700;
  line-height: 1.08;
  color: var(--ink);
  letter-spacing: -0.025em;
  max-width: 1560px;
}
.pullquote .accent { color: var(--accent); }

/* Code block */
.codeblock {
  background: var(--paper-3);
  border: 1px solid var(--rule);
  padding: 26px 32px 24px;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.5;
  color: var(--ink);
  white-space: pre;
  overflow: hidden;
}
[data-theme="dark"] .codeblock { color: var(--ink-2); }
.codeblock .c { color: var(--ink-faint); }
.codeblock .k { color: var(--accent); }
.codeblock .s { color: var(--accent-2); }
.codeblock .h {
  display: block;
  font-size: var(--type-eyebrow);
  letter-spacing: .14em;
  color: var(--ink-faint);
  text-transform: uppercase;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 10px;
  margin-bottom: 16px;
  white-space: normal;
}

/* Numbered list rows */
.list { display: flex; flex-direction: column; gap: var(--gap-item); }
.list-item { display: grid; grid-template-columns: 190px 1fr; gap: 32px; align-items: baseline; }
.list-item .n { font-family: var(--font-label); color: var(--accent); font-size: var(--type-eyebrow); letter-spacing: .14em; text-transform: uppercase; padding-top: 8px; font-weight: 600; }
.list-item .t { font-family: var(--font-display); font-weight: 700; font-size: 40px; line-height: 1.06; letter-spacing: -0.02em; color: var(--ink); }
.list-item .d { color: var(--ink-2); margin-top: 10px; font-size: var(--type-small); line-height: 1.45; }

/* Layer cards (2-up) */
.layers { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.layer-card {
  border: 1px solid var(--rule);
  border-top: 3px solid var(--accent);
  border-radius: var(--card-radius);
  padding: 32px;
  background: var(--paper-2);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.layer-card .lbl {
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .18em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
}
.layer-card .nm { font-family: var(--font-display); font-weight: 700; font-size: 52px; line-height: 1.02; letter-spacing: -0.02em; color: var(--ink); }
.layer-card .desc { font-size: var(--type-small); line-height: 1.5; color: var(--ink-2); }

.sigil {
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .18em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.sigil::before { content: ""; width: 28px; height: 2px; background: var(--accent); display: inline-block; }

.kbd {
  font-family: var(--font-mono);
  font-size: 24px;
  border: 1px solid var(--rule-2);
  border-radius: var(--radius-field, 2px);
  padding: 4px 10px 3px;
  color: var(--ink);
  background: var(--paper-2);
}

/* Checkpoint band — used at module ends */
.checkpoint {
  border: 1px solid var(--rule);
  border-left: 4px solid var(--accent);
  background: var(--paper-2);
  box-shadow: var(--shadow-sm);
  padding: 26px 32px;
  display: flex;
  gap: 28px;
  align-items: baseline;
}
.checkpoint .ck {
  font-family: var(--font-label);
  font-size: var(--type-eyebrow);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}
.checkpoint .tx { font-size: var(--type-small); color: var(--ink-2); line-height: 1.5; }

/* =========================================================
   Theme toggle
   ========================================================= */
#theme-toggle {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: var(--radius-btn, 5px);
  background: rgba(0,55,103,.82);
  color: #fff;
  font-family: var(--font-label);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: .32;
  transition: opacity 160ms cubic-bezier(.2,0,.2,1), background-color 160ms cubic-bezier(.2,0,.2,1);
}
#theme-toggle:hover { opacity: 1; background: var(--pat-primary-hover); }
#theme-toggle:focus-visible { outline: 3px solid var(--pat-sky); outline-offset: 2px; opacity: 1; }
#theme-toggle .sw {
  width: 12px;
  height: 12px;
  background: var(--pat-sky);
  display: inline-block;
}
[data-theme="dark"] #theme-toggle .sw { background: var(--pat-white); }

@media print {
  #theme-toggle { display: none; }
  body { background: white; }
}