/* IVERA — Technical Proposal Template — A4-tight
   Pages are hard-bound to A4 (210×297mm). Density tuned for ~30-40 table rows per page. */

:root {
  /* Palette */
  --ink: oklch(0.18 0.02 252);
  --ink-2: oklch(0.32 0.015 252);
  --ink-3: oklch(0.48 0.012 252);
  --paper: #fafaf8;
  --paper-2: #ffffff;
  --line: oklch(0.91 0.004 252);
  --line-2: oklch(0.86 0.005 252);
  --accent: oklch(0.55 0.14 240);
  --accent-2: oklch(0.55 0.14 295);
  --accent-soft: oklch(0.97 0.02 240);
  --accent-soft-2: oklch(0.97 0.02 295);
  --warn: oklch(0.62 0.14 65);
  --good: oklch(0.58 0.12 155);

  /* Type scale (compact) */
  --t-display: 50px;
  --t-h1: 26px;
  --t-h2: 17px;
  --t-h3: 13px;
  --t-body: 11px;
  --t-small: 10px;
  --t-micro: 9px;

  /* Layout */
  --page-w: 210mm;
  --page-h: 297mm;
  --page-pad-x: 16mm;
  --page-pad-y: 14mm;
}

* { box-sizing: border-box; }
@page { size: A4; margin: 0; }
html, body {
  margin: 0; padding: 0;
  font-family: "Manrope", "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: var(--t-body);
  line-height: 1.45;
  color: var(--ink);
  background: #ebe9e4;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
  font-feature-settings: "ss01", "cv11";
}

.mono { font-family: "JetBrains Mono", ui-monospace, Menlo, monospace; }
.num  { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* Page chrome — HARD A4 bounds */
.page {
  width: var(--page-w);
  height: var(--page-h);
  margin: 14px auto;
  padding: var(--page-pad-y) var(--page-pad-x);
  background: var(--paper);
  position: relative;
  box-shadow: 0 1px 0 rgba(0,0,0,0.04), 0 14px 32px -18px rgba(15,20,35,0.18);
  overflow: hidden;
  page-break-after: always;
  break-after: page;
}
.page.cover {
  background: linear-gradient(180deg, oklch(0.16 0.02 252) 0%, oklch(0.13 0.02 252) 60%, oklch(0.10 0.02 252) 100%);
  color: var(--paper);
  padding: 0;
}

/* Running header / footer */
.run-head, .run-foot {
  position: absolute;
  left: var(--page-pad-x);
  right: var(--page-pad-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--t-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.run-head { top: 7mm; }
.run-foot { bottom: 7mm; padding-top: 5px; border-top: 1px solid var(--line); }
.run-head .brand-mark { display: flex; align-items: center; gap: 8px; color: var(--ink); font-weight: 600; }
.run-foot .conf { color: var(--ink-3); }
.run-foot .pg { color: var(--ink-2); font-weight: 600; }

/* Make the content sit between header and footer */
.page > :not(.run-head):not(.run-foot):not(.cover-inner) {
  /* first content child gets a small breathing-room from the header */
}
.page :not(.cover-inner) > :first-child {
  /* no-op; section-eyebrow already handles top spacing */
}

/* Brand mark */
.ivera-mark { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; letter-spacing: -0.01em; }
.ivera-mark img.logo-img { height: 12px; width: auto; display: block; }
.ivera-mark.lg img.logo-img { height: 26px; }
.ivera-mark.cover img.logo-img { height: 20px; }

/* Cover */
.cover-inner {
  position: relative;
  height: var(--page-h);
  padding: 24mm 22mm;
  display: flex; flex-direction: column;
}
.cover-top { display: flex; justify-content: space-between; align-items: center; }
.cover-top .ivera-mark { color: var(--paper); }
.cover-meta { font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase; color: oklch(0.78 0.02 252); }

.cover-grid {
  margin-top: auto;
  display: flex; flex-direction: column; gap: 24px;
}
.cover-eyebrow {
  font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase;
  color: oklch(0.7 0.04 245);
  display: flex; align-items: center; gap: 14px;
}
.cover-eyebrow::before {
  content: ""; width: 36px; height: 1px; background: oklch(0.7 0.04 245);
}
.cover-title {
  font-size: 44px; line-height: 1.05; letter-spacing: -0.02em; font-weight: 600;
  color: var(--paper); max-width: 14ch;
}
.cover-sub {
  font-size: 15px; line-height: 1.5; color: oklch(0.82 0.02 252);
  max-width: 56ch; font-weight: 400;
}
.cover-divider { height: 1px; background: linear-gradient(90deg, oklch(0.45 0.08 250), transparent 60%); margin-top: 8px; }

.cover-foot {
  margin-top: auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  padding-top: 20px;
  border-top: 1px solid oklch(0.32 0.02 252);
}
.cover-foot .lbl { font-size: 8.5px; letter-spacing: 0.16em; text-transform: uppercase; color: oklch(0.62 0.03 252); margin-bottom: 5px; }
.cover-foot .val { font-size: 11px; line-height: 1.4; color: var(--paper); font-weight: 500; }

.cover-shape {
  position: absolute;
  width: 460px; height: 460px;
  top: -100px; right: -130px;
  background:
    radial-gradient(circle at 40% 40%,
      oklch(0.55 0.14 240 / 0.40) 0%,
      oklch(0.45 0.14 290 / 0.20) 40%,
      transparent 70%);
  filter: blur(38px);
  pointer-events: none;
}
.cover-shape.b {
  width: 260px; height: 260px; top: auto; bottom: -80px; right: auto; left: -60px;
  background: radial-gradient(circle, oklch(0.55 0.14 295 / 0.30) 0%, transparent 70%);
}
.cover-gridlines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(oklch(0.30 0.02 252 / 0.18) 1px, transparent 1px),
    linear-gradient(90deg, oklch(0.30 0.02 252 / 0.18) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 70% 30%, black 0%, transparent 70%);
  pointer-events: none; opacity: 0.45;
}

/* Section headings */
.section-eyebrow {
  font-size: 9px; letter-spacing: 0.20em; text-transform: uppercase;
  color: var(--accent); font-weight: 700;
  display: flex; align-items: center; gap: 9px;
  margin-bottom: 7px;
  margin-top: 4mm;
}
.section-eyebrow::before {
  content: ""; width: 16px; height: 1px; background: var(--accent);
}
h1.sec-title {
  font-size: var(--t-h1); line-height: 1.12; letter-spacing: -0.015em;
  font-weight: 600; margin: 0 0 8px;
  text-wrap: balance;
}
h2.sub-title {
  font-size: var(--t-h2); line-height: 1.22; letter-spacing: -0.005em;
  font-weight: 600; margin: 14px 0 6px;
  color: var(--ink);
}
h3.minor {
  font-size: var(--t-h3); line-height: 1.3; letter-spacing: -0.005em;
  font-weight: 600; margin: 10px 0 5px;
  color: var(--ink);
}
p { margin: 0 0 6px; color: var(--ink-2); text-wrap: pretty; }
.lead { font-size: 12.5px; line-height: 1.45; color: var(--ink); margin-bottom: 10px; }
strong { color: var(--ink); font-weight: 600; }

ul, ol { margin: 0 0 8px; padding-left: 18px; color: var(--ink-2); }
ul li, ol li { margin-bottom: 3px; }
ul.clean { list-style: none; padding-left: 0; }
ul.clean li { position: relative; padding-left: 14px; margin-bottom: 4px; }
ul.clean li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 7px; height: 1px; background: var(--accent);
}

/* Tables — compact */
table {
  width: 100%; border-collapse: collapse; margin: 4px 0 8px;
  font-size: 10px;
}
table th, table td {
  text-align: left; padding: 5px 7px; vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.35;
}
table th {
  font-size: 8.5px; letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 700;
  border-bottom: 1px solid var(--ink); background: transparent;
}
table tr:last-child td { border-bottom: 1px solid var(--ink-3); }
table.compact th, table.compact td { padding: 3.5px 6px; font-size: 9.5px; }
table.zebra tbody tr:nth-child(odd) td { background: oklch(0.99 0.003 252); }
table .right { text-align: right; }
table .center { text-align: center; }
table .num { font-variant-numeric: tabular-nums; }
table.pricing td.amt { font-weight: 600; color: var(--ink); }
table caption { caption-side: top; text-align: left; font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 5px; }

/* Callouts */
.callout {
  border-left: 2px solid var(--accent);
  padding: 8px 12px;
  background: oklch(0.97 0.005 252);
  margin: 8px 0;
  font-size: 10.5px;
  line-height: 1.45;
}
.callout .ck-label {
  font-size: 8.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); font-weight: 700; margin-bottom: 3px;
}
.callout.warn { border-left-color: var(--warn); background: oklch(0.98 0.012 65); }
.callout.warn .ck-label { color: var(--warn); }
.callout.good { border-left-color: var(--good); }
.callout.good .ck-label { color: var(--good); }

/* Cards / metric tiles */
.tile-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
  margin: 6px 0 10px;
}
.tile-row.cols-3 { grid-template-columns: repeat(3, 1fr); }
.tile-row.cols-2 { grid-template-columns: repeat(2, 1fr); }
.tile {
  padding: 10px 11px 9px;
  border: 1px solid var(--line);
  background: var(--paper-2);
}
.tile .k { font-size: 8.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 4px; font-weight: 600; }
.tile .v { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; color: var(--ink); font-variant-numeric: tabular-nums; line-height: 1.1; }
.tile .v.small { font-size: 12px; font-weight: 600; }
.tile .sub { font-size: 9.5px; color: var(--ink-3); margin-top: 3px; line-height: 1.35; }

/* Two-col layout */
.two-col { display: grid; grid-template-columns: 1.1fr 1fr; gap: 20px; }
.three-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

/* Pill / badge */
.pill {
  display: inline-block; padding: 1.5px 6px; border-radius: 999px;
  font-size: 8.5px; letter-spacing: 0.06em; text-transform: uppercase;
  font-weight: 700;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid oklch(0.85 0.05 240);
}
.pill.violet { background: var(--accent-soft-2); color: var(--accent-2); border-color: oklch(0.85 0.05 295); }
.pill.ink { background: oklch(0.94 0.003 252); color: var(--ink); border-color: var(--line); }
.pill.good { background: oklch(0.96 0.04 155); color: var(--good); border-color: oklch(0.85 0.05 155); }
.pill.warn { background: oklch(0.97 0.04 65); color: var(--warn); border-color: oklch(0.86 0.06 65); }

/* TOC */
.toc-list { list-style: none; padding: 0; margin: 0; columns: 2; column-gap: 30px; }
.toc-list li {
  break-inside: avoid;
  display: flex; align-items: baseline;
  padding: 5px 0;
  border-bottom: 1px dotted var(--line-2);
  gap: 8px;
}
.toc-list .num { color: var(--ink-3); font-size: 10px; min-width: 24px; font-variant-numeric: tabular-nums; }
.toc-list .ttl { color: var(--ink); font-weight: 500; font-size: 10.5px; }
.toc-list .pg { margin-left: auto; color: var(--ink-3); font-size: 10px; font-variant-numeric: tabular-nums; }
.toc-list.single { columns: 1; }

/* Architecture diagram */
.arch-frame {
  border: 1px solid var(--line);
  background: var(--paper-2);
  padding: 10px;
  margin: 8px 0 10px;
  overflow: hidden;
}
.arch-layer {
  border-top: 1px dashed var(--line-2);
  padding: 5px 0 6px;
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 10px;
  align-items: stretch;
}
.arch-layer:first-child { border-top: 0; padding-top: 0; }
.arch-layer .layer-label {
  font-size: 8px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 700; padding-top: 4px; line-height: 1.25;
}
.arch-layer .blocks {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: 3px;
  min-width: 0;
}
.arch-block {
  background: oklch(0.97 0.005 252);
  border: 1px solid var(--line);
  padding: 4px 5px 5px;
  font-size: 8.5px;
  line-height: 1.15;
  color: var(--ink-2);
  font-weight: 600;
  min-width: 0;
  overflow: hidden;
}
.arch-block.core { background: oklch(0.95 0.02 240); border-color: oklch(0.82 0.06 240); color: var(--ink); }
.arch-block.ai { background: oklch(0.95 0.02 295); border-color: oklch(0.82 0.06 295); color: var(--ink); }
.arch-block.sec { background: oklch(0.96 0.008 252); border-color: var(--line-2); }
.arch-block .h {
  font-size: 7px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 700; margin-bottom: 2px; display: block;
}

/* Timeline (Gantt-like) */
.gantt {
  border: 1px solid var(--line);
  background: var(--paper-2);
  padding: 10px;
  margin: 8px 0;
  font-size: 9.5px;
}
.gantt-head {
  display: grid; grid-template-columns: 150px 1fr;
  font-size: 8.5px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 700;
  padding-bottom: 5px; border-bottom: 1px solid var(--line);
}
.gantt-months {
  display: grid; grid-template-columns: repeat(24, 1fr); text-align: center;
}
.gantt-months span { padding: 1px 0; border-left: 1px solid var(--line-2); font-size: 7.5px; }
.gantt-row { display: grid; grid-template-columns: 150px 1fr; align-items: center; padding: 3px 0; border-bottom: 1px dotted var(--line-2); }
.gantt-row:last-child { border-bottom: 0; }
.gantt-row .name { font-weight: 600; color: var(--ink); font-size: 9.5px; }
.gantt-row .name .ph { display: block; font-size: 8px; color: var(--ink-3); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 1px; }
.gantt-track { position: relative; height: 14px; }
.gantt-track::before {
  content: ""; position: absolute; inset: 6px 0;
  background-image: repeating-linear-gradient(90deg, transparent 0, transparent calc(100%/24 - 1px), var(--line-2) calc(100%/24 - 1px), var(--line-2) calc(100%/24));
}
.gantt-bar {
  position: absolute; top: 2px; bottom: 2px;
  background: var(--accent);
  border-radius: 2px;
  color: white; font-size: 8.5px; font-weight: 700;
  display: flex; align-items: center; padding: 0 6px;
  letter-spacing: 0.04em;
  overflow: hidden;
}
.gantt-bar.alt { background: var(--accent-2); }
.gantt-bar.ink { background: var(--ink); }
.gantt-bar.soft { background: oklch(0.78 0.05 240); color: var(--ink); }

/* Process / phases strip */
.phase-strip { display: grid; grid-template-columns: repeat(8, 1fr); gap: 4px; margin: 8px 0; }
.phase-cell {
  border: 1px solid var(--line);
  padding: 7px 8px 8px;
  background: var(--paper-2);
  position: relative;
}
.phase-cell .ix {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 8.5px; color: var(--accent); font-weight: 700;
  margin-bottom: 3px;
}
.phase-cell .nm { font-size: 9.5px; font-weight: 600; color: var(--ink); line-height: 1.2; margin-bottom: 3px; }
.phase-cell .du { font-size: 8.5px; color: var(--ink-3); letter-spacing: 0.06em; text-transform: uppercase; }

/* Signature block */
.sig-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 20px; }
.sig-box { border: 1px solid var(--line); padding: 12px 14px; background: var(--paper-2); }
.sig-box .lbl { font-size: 8.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 5px; font-weight: 700; }
.sig-line { border-bottom: 1px solid var(--ink-3); height: 30px; margin: 12px 0 5px; }
.sig-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; font-size: 10px; }
.sig-meta .k { color: var(--ink-3); }
.sig-meta .v { color: var(--ink); border-bottom: 1px solid var(--line); padding-bottom: 1px; min-height: 14px; }

/* Page split helpers */
.divider { height: 1px; background: var(--line); margin: 12px 0; }
.avoid-break { break-inside: avoid; page-break-inside: avoid; }
.spacer-sm { height: 6px; } .spacer-md { height: 12px; } .spacer-lg { height: 20px; }

/* Print — ensure 1 .page == 1 A4 sheet */
@media print {
  @page { size: A4; margin: 0; }
  html, body { background: white; margin: 0; padding: 0; }
  body { font-family: "Manrope", -apple-system, sans-serif; }
  .page {
    box-shadow: none;
    margin: 0;
    width: 210mm; height: 297mm;
    page-break-after: always; break-after: page;
    overflow: hidden;
  }
  .page:last-of-type { page-break-after: auto; }
  .no-print, .actionbar { display: none !important; }
}

/* Screen scaling for narrow viewports */
@media screen and (max-width: 900px) {
  .page { transform: scale(0.7); transform-origin: top center; }
}

/* Floating action bar (screen only) */
.actionbar {
  position: fixed; bottom: 14px; right: 14px;
  display: flex; gap: 6px;
  z-index: 1000;
  background: var(--ink);
  color: var(--paper);
  padding: 7px;
  border-radius: 8px;
  box-shadow: 0 14px 40px -10px rgba(15,20,35,0.45);
}
.actionbar a, .actionbar button {
  background: transparent;
  color: var(--paper);
  border: 1px solid oklch(0.32 0.02 252);
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 6px 10px;
  cursor: pointer;
  text-decoration: none;
  font-weight: 500;
  border-radius: 4px;
}
.actionbar a:hover, .actionbar button:hover { background: oklch(0.28 0.02 252); }
.actionbar a.primary, .actionbar button.primary { background: var(--accent); border-color: var(--accent); }
.actionbar a.primary:hover, .actionbar button.primary:hover { background: oklch(0.62 0.14 240); }

/* Editable mode markers */
[data-bind] { outline-offset: 2px; }
body.show-binds [data-bind] { outline: 1px dashed oklch(0.65 0.15 240 / 0.4); background: oklch(0.97 0.02 240 / 0.3); }
body.show-binds section[data-section-id] { outline: 2px dashed oklch(0.55 0.14 240 / 0.5); outline-offset: -2px; }