/* Viska weekly explainer — Nordic-institutional, navy + gold (metadata only).
 * Brand: projects/viska/viska.brand.json (composite with brand-manual.md).
 * Hard constraints applied: no thin weights, no custom web fonts, gold = metadata only,
 * no neon/gradient mesh, muted palette only.
 */

:root {
  /* Backgrounds */
  --background-color: #ffffff;
  --section-divider-bg: #253F59;          /* Navy dividers — split-hero motif */
  --surface: #F9FAFB;
  --border: #E5E7EB;

  /* Typography — Viska brand mandates system stack */
  --heading-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --body-font:    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --base-font-size: 32px;
  --text-size: 16pt;
  --h1-size: 44pt;
  --h2-size: 32pt;
  --h3-size: 20pt;
  --footnote-size: 11pt;

  /* Viska palette */
  --navy:      #253F59;
  --navy-deep: #1A2D40;
  --gold:      #A59377;
  --gold-soft: #C9B999;
  --cyan:      #155E75;
  --primary-color: var(--navy);
  --secondary-color: var(--gold);
  --text-color: #111827;
  --muted-color: #6B7280;
  --line-color: #E5E7EB;

  /* Layout */
  --slide-padding: 64px;
  --slide-padding-top: 48px;
  --content-gap: 24px;
  --box-radius: 4px;                       /* near-square, no rounded cartoon */
}

/* ============ base ============ */
.reveal { font-family: var(--body-font); font-size: var(--base-font-size); }
.reveal strong, .reveal b { font-weight: 700; }

.reveal-viewport { background-color: var(--background-color); }
.reveal-viewport.is-section-divider .slide-background.present {
  background-color: var(--section-divider-bg) !important;
}

.reveal h1, .reveal h2, .reveal h3, .reveal h4, .reveal h5, .reveal h6 {
  font-family: var(--heading-font);
  text-transform: none;
  color: var(--navy);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.reveal h1 { font-size: var(--h1-size); }
.reveal h2 { font-size: var(--h2-size); margin-bottom: 0; }
.reveal h3 { font-size: var(--h3-size); }
.reveal p, .reveal li, .reveal td, .reveal th, .reveal blockquote {
  font-size: var(--text-size);
  color: var(--text-color);
  line-height: 1.55;
}

/* ============ lists ============ */
.reveal ul { list-style: none; padding-left: 0; margin: 12px 0; }
.reveal ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
}
.reveal ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--navy);
  border-radius: 0;                        /* square markers — Nordic restraint */
}
.reveal ul ul li::before { background: var(--gold); width: 5px; height: 5px; }

.reveal blockquote p { font-size: inherit; }

/* ============ slide layout ============ */
.reveal .slides > section {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
}
.reveal .slides section {
  height: 100%;
  width: 100%;
  display: flex !important;
  flex-direction: column !important;
  padding: var(--slide-padding-top) var(--slide-padding) var(--slide-padding) var(--slide-padding) !important;
  box-sizing: border-box;
  text-align: left;
}
.reveal .slides section.stack { padding: 0 !important; }
.reveal .slides section > .content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: var(--content-gap);
  text-align: left;
}
.reveal .slides section > .footnote {
  position: absolute;
  bottom: 18px;
  left: var(--slide-padding);
  right: var(--slide-padding);
  font-size: var(--footnote-size);
  color: var(--muted-color);
  letter-spacing: 0.02em;
}

/* Slide number band — small, gold (metadata) */
.reveal .slides section::after {
  content: attr(data-slide-no);
  position: absolute;
  top: 18px;
  right: 24px;
  font-size: 10pt;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
}

/* Hide slide-no on dividers */
.reveal .slides section.section-divider::after { content: ''; }

/* ============ section dividers ============ */
.reveal .slides section.section-divider {
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: flex-start !important;
  text-align: left;
  background: var(--navy);
  overflow: hidden;
}
.reveal .slides section.section-divider h1 {
  font-size: 60pt;
  color: #fff;
  text-align: left;
  max-width: 16em;
  letter-spacing: -0.015em;
  z-index: 2;
  position: relative;
}
.reveal .slides section.section-divider p {
  font-size: 18pt;
  color: var(--gold-soft);
  margin-top: 24px;
  letter-spacing: 0.02em;
  z-index: 2;
  position: relative;
}
.reveal .slides section.section-divider::before {
  /* diagonal polygon divider — composition motif from brand */
  content: '';
  position: absolute;
  right: -120px;
  top: -80px;
  width: 700px;
  height: 900px;
  background: var(--navy-deep);
  transform: skewX(-12deg);
  z-index: 1;
}

/* ============ text utilities ============ */
.text-lg  { font-size: 18pt !important; }
.text-xl  { font-size: 20pt !important; }
.text-2xl { font-size: 24pt !important; }
.text-3xl { font-size: 28pt !important; }
.text-4xl { font-size: 32pt !important; }
.text-muted   { color: var(--muted-color) !important; }
.text-center  { text-align: center !important; }
.text-navy    { color: var(--navy) !important; }
.text-gold    { color: var(--gold) !important; }
.text-uppercase { text-transform: uppercase; letter-spacing: 0.14em; }

/* ============ Viska components ============ */

/* Eyebrow — gold metadata above titles (per brand: gold is for metadata only) */
.eyebrow {
  font-size: 11pt;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold);
  font-weight: 600;
  margin: 0 0 8px 0;
}

/* Lead — large opening paragraph for narrative slides */
.lead {
  font-size: 19pt;
  line-height: 1.5;
  color: var(--text-color);
  max-width: 22em;
}

/* Room card — used for backend/active room descriptions */
.room-card {
  background: var(--surface);
  border-left: 6px solid var(--navy);
  padding: 20px 24px;
  margin: 10px 0;
}
.room-card.accent { border-left-color: var(--cyan); }

/* Agent card grid */
.agent-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 12px;
}
.agent-card {
  background: #fff;
  border: 1px solid var(--border);
  border-top: 3px solid var(--navy);
  padding: 14px 18px;
}
.agent-card .role {
  font-size: 10pt;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 4px;
}
.agent-card .name {
  font-size: 16pt;
  font-weight: 800;
  color: var(--navy);
  margin: 0;
  line-height: 1.2;
}
.agent-card .desc {
  font-size: 13pt !important;
  color: var(--text-color);
  line-height: 1.45;
  margin-top: 6px;
}

/* Tighter agent table for the room overviews */
.room-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  font-size: 13.5pt;
}
.room-table th, .room-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  font-size: 13.5pt !important;
  line-height: 1.4;
}
.room-table th {
  font-weight: 700;
  color: var(--navy);
  font-size: 12pt !important;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 2px solid var(--navy);
}
.room-table td.group { font-weight: 700; color: var(--navy); width: 22%; }
.room-table td.agent { color: var(--gold); font-weight: 600; width: 22%; font-size: 12.5pt !important; letter-spacing: 0.05em; }

/* Memory band — for memory-layer slides */
.memory-band {
  background: var(--navy);
  color: #fff;
  padding: 18px 24px;
  margin-top: 16px;
}
.memory-band p, .memory-band li { color: #fff !important; }
.memory-band .eyebrow { color: var(--gold-soft); }

/* Source pills — for data-mining slide */
.source-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}
.source-pill {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 6px 14px;
  font-size: 12pt;
  color: var(--navy);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.source-pill.accent { border-color: var(--gold); }

/* Layer stack — for 3-layer usage frame */
.layer-stack { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.layer-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  align-items: stretch;
  border: 1px solid var(--border);
  background: #fff;
}
.layer-row .num {
  background: var(--navy);
  color: #fff;
  font-size: 28pt;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--heading-font);
}
.layer-row .body { padding: 12px 18px; }
.layer-row .body h3 {
  font-size: 15pt;
  margin: 0 0 4px 0;
  color: var(--navy);
}
.layer-row .body p {
  font-size: 13pt !important;
  color: var(--text-color);
  line-height: 1.45;
  margin: 0;
}

/* Topology slide — full-bleed SVG wrap, navy backdrop band */
.topology-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding-top: 8px;
}
.topology-wrap svg {
  width: 100%;
  height: auto;
  max-height: 540px;
}

/* Title slide — split-hero motif from brand */
#title.section-divider {
  padding: 0 !important;
  overflow: hidden;
  background: var(--surface) !important;     /* prevents bleed if title-hero doesn't fill */
  align-items: stretch !important;
  justify-content: stretch !important;
}
/* Suppress generic section-divider diagonal wedge on title (title-hero provides its own) */
#title.section-divider::before { content: none !important; }
.title-hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}
.title-hero .panel-left {
  background: var(--navy);
  color: #fff;
  padding: 80px 64px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}
.title-hero .panel-left::after {
  content: '';
  position: absolute;
  right: -60px;
  top: 0;
  bottom: 0;
  width: 120px;
  background: var(--navy);
  transform: skewX(-7deg);
  z-index: 1;
}
.title-hero .panel-left .eyebrow { color: var(--gold); }
.title-hero .panel-left h1 {
  color: #fff;
  font-size: 50pt;
  letter-spacing: -0.015em;
  margin: 12px 0 16px;
  max-width: 12em;
}
.title-hero .panel-left .sub {
  color: var(--gold-soft);
  font-size: 17pt;
  margin: 0;
  letter-spacing: 0.01em;
}
.title-hero .panel-left .meta {
  color: var(--gold-soft);
  font-size: 12pt;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.title-hero .panel-right {
  background: var(--surface);
  position: relative;
  overflow: hidden;
}
/* Dot grid decorative pattern — per brand composition motif (subtle) */
.title-hero .panel-right::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--gold) 1.2px, transparent 1.5px);
  background-size: 22px 22px;
  opacity: 0.22;
}
.title-hero .panel-right .stamp {
  position: absolute;
  left: 56px;
  bottom: 56px;
  z-index: 2;
}
.title-hero .panel-right .stamp .num {
  font-size: 96pt;
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
  letter-spacing: -0.04em;
}
.title-hero .panel-right .stamp .label {
  font-size: 12pt;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 10px;
}

/* Closing slide — center-bias, navy bg, recap list */
section.closing-slide { background: var(--navy); color: #fff; }
section.closing-slide h2 { color: #fff; }
section.closing-slide p, section.closing-slide li { color: #fff; }
section.closing-slide ul li::before { background: var(--gold); }

/* Suppress slide-number band when explicitly hidden */
section.no-num::after { content: '' !important; }

/* ============ Section 6 — What's Next ============ */

/* Hero metric (Section 6 intro slide on navy bg) */
.reveal .metric-hero {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 36px;
  align-items: center;
  margin-top: 0;
  max-width: 720px;                          /* clear the section-divider diagonal wedge */
}
.reveal .metric-hero .num {
  font-size: 130pt !important;
  font-weight: 800 !important;
  color: #fff !important;
  line-height: 0.9 !important;
  letter-spacing: -0.05em;
  font-family: var(--heading-font);
  margin: 0 !important;
}
.reveal .metric-hero .frame { color: #fff; }
.reveal .metric-hero .frame .eyebrow { color: var(--gold); margin-bottom: 6px; }
.reveal .metric-hero .frame h2 { color: #fff; font-size: 28pt !important; margin: 0; line-height: 1.15; }
.reveal .metric-hero .frame p { color: var(--gold-soft) !important; font-size: 13.5pt !important; margin-top: 12px; line-height: 1.45; }

.metric-row {
  display: flex;
  gap: 24px;
  margin-top: 22px;
  flex-wrap: wrap;
}
.metric-row .pill {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(165, 147, 119, 0.4);
  padding: 10px 16px;
  font-size: 11.5pt;
  color: #fff;
  letter-spacing: 0.08em;
}
.metric-row .pill strong { color: var(--gold-soft); font-weight: 800; margin-right: 6px; }

/* Group header — letter + count chip */
.group-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 6px;
}
.group-header .letter {
  font-size: 11pt;
  letter-spacing: 0.18em;
  color: var(--gold);
  font-weight: 700;
  text-transform: uppercase;
}
.group-header .count {
  font-size: 10pt;
  background: var(--navy);
  color: #fff;
  padding: 4px 12px;
  letter-spacing: 0.14em;
  font-weight: 600;
}
.group-owner {
  font-size: 11pt;
  color: var(--muted-color);
  margin-top: 12px;
  letter-spacing: 0.04em;
}
.group-owner strong { color: var(--navy); }

/* Item grid */
.item-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 10px;
}
.item-grid.single  { grid-template-columns: 1fr; }
.item-grid.triple  { grid-template-columns: repeat(3, 1fr); }
.item-card {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 3px solid var(--navy);
  padding: 12px 16px;
}
.item-card.accent { border-left-color: var(--gold); }
.item-card.cyan   { border-left-color: var(--cyan); }
.item-card .item-tag {
  font-size: 9pt;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
  margin: 0 0 4px 0;
}
.item-card .item-title {
  font-size: 13.5pt !important;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 4px 0;
  line-height: 1.3;
}
.item-card .item-desc {
  font-size: 11.5pt !important;
  color: var(--text-color);
  margin: 0;
  line-height: 1.4;
}

/* Gate strip — for Section 6 Group B (gates G1–G5) */
.gate-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-top: 14px;
}
.gate {
  background: #fff;
  border: 1px solid var(--border);
  border-top: 4px solid var(--navy);
  padding: 14px;
  text-align: center;
}
.gate .id {
  font-size: 22pt;
  font-weight: 800;
  color: var(--navy);
  margin: 0;
  font-family: var(--heading-font);
  letter-spacing: -0.02em;
}
.gate .label {
  font-size: 10pt;
  color: var(--text-color);
  margin-top: 6px;
  line-height: 1.4;
}

/* Kanban mini-board (Reading the Board slide) */
.kanban {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 12px;
}
.kanban-col {
  background: var(--surface);
  border-top: 4px solid var(--muted-color);
  padding: 12px;
  min-height: 230px;
}
.kanban-col.flight { border-top-color: var(--cyan); }
.kanban-col.review { border-top-color: var(--navy); }
.kanban-col.done   { border-top-color: var(--gold); }
.kanban-col h3 {
  font-size: 10pt;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy);
  margin: 0 0 12px 0;
}
.kanban-col h3 .n {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  padding: 2px 8px;
  font-size: 9pt;
  margin-left: 6px;
  letter-spacing: 0.12em;
}
.kanban-card {
  background: #fff;
  border: 1px solid var(--border);
  padding: 8px 10px;
  margin-bottom: 6px;
  font-size: 10.5pt;
  color: var(--text-color);
  line-height: 1.35;
}
.kanban-card .label {
  display: block;
  font-size: 8.5pt;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 2px;
  font-weight: 600;
}

/* Board URL highlight */
.board-url {
  background: var(--navy);
  color: #fff;
  padding: 12px 18px;
  margin-top: 14px;
  font-family: var(--mono, ui-monospace, SFMono-Regular, Menlo, monospace);
  font-size: 13pt;
  letter-spacing: 0.02em;
  display: inline-block;
}
.board-url::before { content: '↗  '; color: var(--gold); font-weight: 600; }

/* ============ persistent deck footer ============ */
/* Lives outside .slides — persists across every slide via reveal-js absolute layout. */
.deck-footer {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 30px;
  background: var(--navy);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 24px;
  z-index: 50;                              /* above slide content + nav arrows */
  pointer-events: none;
  font-size: 9pt;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: var(--body-font);
}
.deck-footer img {
  height: 13px;
  width: auto;
  opacity: 0.95;
  display: block;
}
.deck-footer .conf {
  flex: 1;
  text-align: center;
  color: #fff;
  opacity: 0.72;
  font-size: 8.5pt;
  letter-spacing: 0.18em;
  margin: 0;
  font-weight: 500;
}
.deck-footer .boas {
  color: var(--gold-soft);
  margin: 0;
  font-size: 9pt;
  letter-spacing: 0.22em;
  font-weight: 600;
}
.deck-footer .boas .dot {
  color: var(--gold);
  margin: 0 4px;
}

/* Push slide bottom padding up to clear footer + breathing room */
.reveal .slides section {
  padding-bottom: 56px !important;
}
/* But preserve section-divider center alignment */
.reveal .slides section.section-divider {
  padding-bottom: 30px !important;          /* footer height only — center stays centered */
}
/* Title slide: title-hero fills slide; footer sits over surface band */
#title.section-divider { padding-bottom: 0 !important; }
.title-hero .panel-left,
.title-hero .panel-right {
  padding-bottom: 60px;                     /* clear footer over title-hero */
}
.title-hero .panel-right .stamp { bottom: 60px; }
/* Closing slide: footer becomes invisible separator on navy bg — re-emphasize border-top */
section.closing-slide ~ .deck-footer,
.deck-footer { border-top: 1px solid rgba(165, 147, 119, 0.18); }