/* ============================================================
   THE FAMILY FORTRESS — companion site stylesheet
   Brand: bold black & white, heavy borders, layer number tabs.
   Mobile-first. Dark-mode friendly. No frameworks, no build step.
   ============================================================ */

:root {
  --ink: #000;
  --paper: #fff;
  --gray: #6b6b6b;
  --gray-light: #e8e8e8;
  --border-heavy: 3px solid var(--ink);
  --border-mid: 2px solid var(--ink);
  --max-width: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2f2f2;
    --paper: #111;
    --gray: #9a9a9a;
    --gray-light: #2a2a2a;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  font-size: 17px;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem 4rem;
}

/* ---------- Site header ---------- */

.site-header {
  border-bottom: var(--border-heavy);
  padding: 0.9rem 1rem;
}

.site-header .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--ink);
}

.site-header nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  border: var(--border-mid);
  padding: 0.25rem 0.6rem;
  white-space: nowrap;
}

.site-header nav a:hover { background: var(--ink); color: var(--paper); }

/* ---------- Layer number tab + page header ---------- */

.layer-tab {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  font-size: 3.2rem;
  letter-spacing: -0.04em;
  line-height: 1;
  padding: 0.85rem 1.2rem;
  margin-bottom: 0.75rem;
}

/* Display numeral stat callout (brand v2) */
.stat-callout {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  border: var(--border-heavy);
  padding: 1rem 1.15rem;
  margin: 1.5rem 0;
}

.stat-callout .n {
  font-size: 3.4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  white-space: nowrap;
}

.stat-callout .l {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.3;
}

.page-header { margin: 2rem 0 1.25rem; }

.page-header h1 {
  font-size: 2rem;
  line-height: 1.1;
  margin: 0 0 0.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-header .kicker {
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gray);
  margin: 0 0 0.4rem;
}

/* ---------- Seven-block layer tracker ---------- */

.stack-tracker {
  display: flex;
  gap: 4px;
  margin: 1.25rem 0 0.35rem;
}

.stack-tracker .block {
  flex: 1;
  height: 34px;
  border: var(--border-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--ink);
  text-decoration: none;
}

.stack-tracker .block.current {
  background: var(--ink);
  color: var(--paper);
}

.stack-tracker .block:hover:not(.current) { background: var(--gray-light); }

.you-are-here {
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gray);
  margin: 0 0 1.5rem;
}

/* ---------- Last verified stamp ---------- */

.last-verified {
  display: inline-block;
  border: var(--border-mid);
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0.25rem 0 1.25rem;
}

/* ---------- Typography ---------- */

h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin: 2.5rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: var(--border-heavy);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 1.75rem 0 0.5rem;
}

a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }

code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85em;
  background: var(--gray-light);
  padding: 0.1em 0.35em;
}

hr { border: none; border-top: var(--border-mid); margin: 2rem 0; }

/* ---------- Principle / callout blocks ---------- */

.principle {
  border: var(--border-heavy);
  padding: 1rem 1.15rem;
  margin: 1.5rem 0;
  font-weight: 700;
  font-size: 1.05rem;
}

.principle .label {
  display: block;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--gray);
  margin-bottom: 0.35rem;
}

.callout {
  border-left: 6px solid var(--ink);
  background: var(--gray-light);
  padding: 0.85rem 1rem;
  margin: 1.25rem 0;
  font-size: 0.95rem;
}

.callout strong:first-child { text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.8rem; }

.warning {
  border: var(--border-heavy);
  padding: 0.85rem 1rem;
  margin: 1.25rem 0;
}

.warning::before {
  content: "⚠ Heads up";
  display: block;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
}

/* ---------- VERIFY flag ---------- */

.verify {
  display: inline-block;
  border: 2px dashed var(--ink);
  padding: 0.05rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- Screenshots ---------- */

figure.shot {
  border: var(--border-mid);
  margin: 1rem 0 1.5rem;
  padding: 0;
}

figure.shot img { width: 100%; display: block; }

figure.shot.phone { max-width: 400px; }

figure.shot figcaption {
  font-size: 0.8rem;
  color: var(--gray);
  padding: 0.45rem 0.7rem;
  border-top: 1px solid var(--gray-light);
}

/* ---------- Screenshot placeholder ---------- */

.screenshot-placeholder {
  border: 2px dashed var(--gray);
  color: var(--gray);
  padding: 2.25rem 1rem;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1rem 0;
}

/* ---------- Steps (click-paths) ---------- */

ol.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.5rem;
}

ol.steps > li {
  counter-increment: step;
  position: relative;
  padding: 0 0 1rem 3rem;
  margin: 0;
}

ol.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

/* ---------- Checklists ---------- */

ul.checklist { list-style: none; padding: 0; margin: 1rem 0 1.5rem; }

ul.checklist > li {
  position: relative;
  padding: 0.4rem 0 0.4rem 2.1rem;
  border-bottom: 1px solid var(--gray-light);
}

ul.checklist > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 1.1rem;
  height: 1.1rem;
  border: var(--border-mid);
}

/* ---------- Tables ---------- */

.table-scroll { overflow-x: auto; margin: 1rem 0 1.5rem; }

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9rem;
}

th, td {
  border: 1px solid var(--ink);
  padding: 0.5rem 0.65rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--ink);
  color: var(--paper);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

/* ---------- Buttons / CTA ---------- */

.btn {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  padding: 0.8rem 1.4rem;
  border: var(--border-heavy);
  font-size: 0.95rem;
}

.btn:hover { background: var(--paper); color: var(--ink); }

.btn-secondary { background: var(--paper); color: var(--ink); }
.btn-secondary:hover { background: var(--ink); color: var(--paper); }

/* ---------- Home page: layer stack + page grid ---------- */

.layer-stack { margin: 2rem 0; border: var(--border-heavy); }

.layer-stack a {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--ink);
  border-bottom: var(--border-mid);
  padding: 0.75rem 1rem 0.75rem 0;
}

.layer-stack a:last-child { border-bottom: none; }

.layer-stack a:hover { background: var(--gray-light); }

.layer-stack .num {
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  font-size: 1.7rem;
  letter-spacing: -0.03em;
  min-width: 3.4rem;
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
}

.layer-stack .name { font-weight: 800; font-size: 1rem; }
.layer-stack .desc { font-size: 0.85rem; color: var(--gray); display: block; }

.page-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

@media (min-width: 540px) { .page-grid { grid-template-columns: 1fr 1fr; } }

.page-grid a {
  border: var(--border-mid);
  padding: 0.85rem 1rem;
  text-decoration: none;
  color: var(--ink);
}

.page-grid a:hover { background: var(--ink); color: var(--paper); }
.page-grid a:hover .desc { color: var(--paper); }

.page-grid .name { font-weight: 800; display: block; }
.page-grid .desc { font-size: 0.85rem; color: var(--gray); }

/* ---------- Newsletter stub ---------- */

.newsletter-stub {
  border: 2px dashed var(--gray);
  padding: 1.25rem;
  margin: 2rem 0;
  text-align: center;
}

.newsletter-stub .tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray);
  font-weight: 700;
}

/* ---------- Changelog ---------- */

.changelog { list-style: none; padding: 0; margin: 1.5rem 0; }

.changelog > li {
  border-left: 6px solid var(--ink);
  padding: 0.15rem 0 0.15rem 1rem;
  margin-bottom: 1.4rem;
}

.changelog .date {
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  display: block;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: var(--border-heavy);
  margin-top: 3rem;
  padding: 1.5rem 1rem 2.5rem;
  font-size: 0.85rem;
  color: var(--gray);
}

.site-footer .inner { max-width: var(--max-width); margin: 0 auto; }
.site-footer a { color: var(--ink); }

/* ---------- Worksheet (inventory) ---------- */

.worksheet-section { border: var(--border-heavy); margin: 1.5rem 0; }

.worksheet-section .ws-head {
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.6rem 1rem;
  font-size: 0.95rem;
}

.worksheet-section .ws-body { padding: 0.75rem 1rem 1rem; }

.write-lines { margin: 0.75rem 0 0; }

.write-lines .line {
  border-bottom: 1px solid var(--gray);
  height: 2rem;
}

/* ---------- Print ---------- */

@media print {
  :root { --ink: #000; --paper: #fff; --gray: #444; --gray-light: #eee; }
  body { font-size: 11pt; background: #fff; color: #000; }
  .site-header, .site-footer, .stack-tracker, .you-are-here,
  .btn, .no-print, .newsletter-stub { display: none !important; }
  .wrap { max-width: none; padding: 0; }
  a { text-decoration: none; color: #000; }
  .worksheet-section { break-inside: avoid; }
  .write-lines .line { height: 1.6rem; }
  h2 { border-top: 2pt solid #000; }
}