/* ==========================================================================
   brucenorton.com — site styles
   A classic, quiet layout: serif type, hairline rules, generous white space.
   No frameworks, no build step. Edit freely.
   ========================================================================== */

/* --- 1. Palette and type tokens -------------------------------------- */
:root {
  --paper:      #FBFAF7;   /* warm off-white page */
  --paper-alt:  #F4F1EA;   /* banded sections */
  --ink:        #1B1A17;   /* body text */
  --ink-soft:   #55514A;   /* secondary text */
  --ink-faint:  #857F74;   /* captions, labels */
  --rule:       #DCD6C9;   /* hairlines */
  --accent:     #7A2E2A;   /* oxblood, used sparingly */
  --accent-dk:  #5C2320;

  --serif: "EB Garamond", Georgia, "Times New Roman", serif;
  --sans:  ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --shell:   68rem;   /* page width */
  --measure: 36rem;   /* comfortable reading column */
}

/* --- 2. Reset and base ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.1875rem;
  line-height: 1.72;
  font-feature-settings: "kern" 1, "liga" 1, "onum" 1;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover, a:focus-visible { color: var(--accent-dk); text-decoration: underline; text-underline-offset: 0.18em; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.skip-link {
  position: absolute; left: -9999px;
  background: var(--ink); color: var(--paper);
  padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* --- 3. Typography ---------------------------------------------------- */
h1, h2, h3, h4 {
  font-weight: 500;
  line-height: 1.18;
  margin: 0 0 0.6em;
  letter-spacing: -0.005em;
}

h1 { font-size: clamp(2.6rem, 6vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.25rem); }
h3 { font-size: 1.4rem; }

p { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: clamp(1.25rem, 2.2vw, 1.45rem);
  line-height: 1.62;
  color: var(--ink-soft);
}

.prose { max-width: var(--measure); }
.prose h2 { margin-top: 2.4em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 2em; color: var(--ink); }
.prose .eyebrow + h1,
.prose .eyebrow + h2 { margin-top: 0; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 1.25rem;
}

blockquote {
  margin: 2rem 0;
  padding-left: 1.5rem;
  border-left: 2px solid var(--accent);
  font-style: italic;
  color: var(--ink-soft);
}

/* --- 4. Masthead and navigation --------------------------------------- */
.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding-block: 1.5rem;
}

.wordmark { color: var(--ink); display: block; }
.wordmark:hover { text-decoration: none; color: var(--ink); }

.wordmark-name {
  display: block;
  font-size: 1.28rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.wordmark-rule {
  display: block;
  width: 2.25rem;
  height: 1px;
  background: var(--accent);
  margin: 0.5rem 0 0.4rem;
}

.wordmark-sub {
  display: block;
  font-family: var(--sans);
  font-size: 0.66rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
}

.nav a {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-bottom: 0.3rem;
  border-bottom: 1px solid transparent;
}

.nav a:hover { color: var(--ink); text-decoration: none; border-bottom-color: var(--rule); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

/* Hamburger toggle — only ever visible on small screens (see section 12). */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.7rem;
  background: none;
  border: 0;
  padding: 0.4rem 0;
  cursor: pointer;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-toggle-bars { position: relative; width: 22px; height: 1px; background: var(--ink); }
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 1px;
  background: var(--ink);
}
.nav-toggle-bars::before { top: -7px; }
.nav-toggle-bars::after  { top: 7px; }

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  transition: transform 0.2s ease, background-color 0.2s ease;
}

/* Open state: the three bars become an X. */
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after  { transform: translateY(-7px) rotate(-45deg); }

@media (prefers-reduced-motion: reduce) {
  .nav-toggle-bars,
  .nav-toggle-bars::before,
  .nav-toggle-bars::after { transition: none; }
}

/* --- 5. Sections ------------------------------------------------------ */
.section { padding-block: clamp(3.5rem, 8vw, 6rem); }
.section + .section { border-top: 1px solid var(--rule); }
.section--tint { background: var(--paper-alt); border-top: 1px solid var(--rule); }

.section-head { max-width: var(--measure); margin-bottom: 2.75rem; }
.section-head p { color: var(--ink-soft); }

/* --- 6. Hero ---------------------------------------------------------- */
.hero { padding-block: clamp(4rem, 11vw, 8rem) clamp(3rem, 7vw, 5rem); }
.hero-inner { max-width: 44rem; }
.hero h1 { margin-bottom: 0.35em; }

.hero-tagline {
  font-style: italic;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  color: var(--accent);
  margin-bottom: 1.75rem;
}

.hero .lead { max-width: var(--measure); }

/* --- 7. Buttons ------------------------------------------------------- */
.actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.25rem; }

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  padding: 0.85rem 1.6rem;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.btn:hover { background: var(--ink); color: var(--paper); text-decoration: none; }

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

/* --- 8. Card grid (used for the hub links) ---------------------------- */
.grid {
  display: grid;
  gap: 1px;
  background: var(--rule);
  border-block: 1px solid var(--rule);
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.grid > * {
  background: var(--paper);
  padding: 2.25rem 1.75rem;
}

.section--tint .grid > * { background: var(--paper-alt); }

.card h3 { margin-bottom: 0.5rem; }
.card h3 a { color: var(--ink); }
.card h3 a:hover { color: var(--accent); text-decoration: none; }
.card p { font-size: 1.02rem; color: var(--ink-soft); }

.card-meta {
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.9rem;
}

.card-more {
  display: inline-block;
  margin-top: 1rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

/* --- 9. Book entries -------------------------------------------------- */
.book {
  display: grid;
  grid-template-columns: 13rem 1fr;
  gap: 3rem;
  align-items: start;
  padding-block: 3rem;
}
.book + .book { border-top: 1px solid var(--rule); }
.book--nocover { grid-template-columns: 1fr; }
.book-body { max-width: var(--measure); }
.book-status {
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

/* --- 9b. Portrait beside an intro ------------------------------------- */
.about-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 20rem;
  gap: 3.5rem;
  align-items: start;
  margin-bottom: 2.6rem;
}

.portrait { margin: 0; }
.portrait img { width: 100%; }

@media (max-width: 56rem) {
  .about-intro { grid-template-columns: 1fr; gap: 2rem; }
  .portrait { max-width: 20rem; }
}

/* --- 10. Definition-style lists --------------------------------------- */
.stack { list-style: none; margin: 0; padding: 0; }
.stack > li { padding-block: 1.5rem; border-top: 1px solid var(--rule); }
.stack > li:last-child { border-bottom: 1px solid var(--rule); }
.stack h3 { margin-bottom: 0.35rem; }
.stack p { font-size: 1.02rem; color: var(--ink-soft); max-width: 44rem; }

/* --- 10b. Sub-courses inside a stack item ----------------------------- */
.courses {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0 0 0 1.5rem;
  border-left: 1px solid var(--rule);
  max-width: 44rem;
}

.courses > li + li { margin-top: 1.4rem; }

.course-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.course-name { font-size: 1.12rem; color: var(--ink); }

.course-status {
  font-family: var(--sans);
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border: 1px solid var(--rule);
  padding: 0.2rem 0.5rem;
  white-space: nowrap;
}

.course-status--done { color: var(--accent); border-color: var(--accent); }

.courses p:not(.course-head) { margin-bottom: 0; }

/* --- 10c. Contact form ------------------------------------------------ */
.form-wrap { max-width: 40rem; }

.field { margin-bottom: 1.75rem; }

.field label {
  display: block;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.55rem;
}

.field-optional {
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  font-family: var(--serif);
  font-size: 1.06rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 0.75rem 0.9rem;
  transition: border-color 0.15s ease;
  -webkit-appearance: none;
  appearance: none;
}

.field select {
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%),
                    linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%);
  background-position: calc(100% - 1.1rem) 1.15rem, calc(100% - 0.75rem) 1.15rem;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.5rem;
}

.field textarea { resize: vertical; min-height: 11rem; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.field [aria-invalid="true"] { border-color: var(--accent); }

.field-error {
  font-family: var(--sans);
  font-size: 0.82rem;
  color: var(--accent);
  margin: 0.5rem 0 0;
}

button.btn { cursor: pointer; font-family: var(--sans); }

/* Honeypot — hidden from people, still reachable by bots. */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.notice {
  border-left: 2px solid var(--rule);
  padding: 0.4rem 0 0.4rem 1.5rem;
  margin-bottom: 2.25rem;
  max-width: var(--measure);
}
.notice--good { border-left-color: var(--accent); }
.notice--good h2 { font-size: 1.7rem; margin-bottom: 0.5rem; }
.notice--bad { border-left-color: var(--accent); color: var(--accent); }
.notice p { color: var(--ink-soft); }
.notice--bad p { color: var(--accent); }

/* --- 11. Footer ------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--rule);
  background: var(--paper-alt);
  padding-top: 3.5rem;
  margin-top: 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer-name { font-size: 1.1rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 0.3rem; }
.footer-note { font-size: 0.95rem; color: var(--ink-faint); }

.footer-label {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.85rem;
}

.footer-links { list-style: none; margin: 0; padding: 0; font-size: 1rem; }
.footer-links li { margin-bottom: 0.4rem; }

.footer-base {
  border-top: 1px solid var(--rule);
  padding-block: 1.5rem;
  font-family: var(--sans);
  font-size: 0.75rem;
  color: var(--ink-faint);
}
.footer-base p { margin: 0; }

/* --- 12. Small screens ------------------------------------------------ */
@media (max-width: 46rem) {
  body { font-size: 1.125rem; }

  /* Wordmark on the left, hamburger on the right, menu below when opened. */
  .masthead-inner { align-items: center; gap: 1rem; padding-block: 1.25rem; }
  /* At least 44px tall so it is a comfortable thumb target. */
  .nav-toggle { display: inline-flex; min-height: 44px; padding-block: 0.75rem; }

  .nav { flex-basis: 100%; }

  /* With JavaScript the menu starts closed. Without it, the links simply
     stay on the page — nothing is ever hidden behind a button that cannot
     be pressed. */
  .js .nav { display: none; }
  .js .nav.is-open { display: block; }

  .nav ul {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0.5rem;
  }

  .nav li { border-top: 1px solid var(--rule); }

  .nav a {
    display: block;
    padding: 0.9rem 0;
    border-bottom: 0;
    font-size: 0.82rem;
  }

  .nav a:hover { border-bottom-color: transparent; }

  .nav a[aria-current="page"] {
    border-bottom-color: transparent;
    color: var(--accent);
  }

  .book { grid-template-columns: 1fr; gap: 1.75rem; }
  .book-cover { max-width: 11rem; }
}

/* --- 13. Print -------------------------------------------------------- */
@media print {
  .masthead, .footer, .actions, .skip-link, .nav-toggle { display: none; }
  body { background: #fff; font-size: 11pt; }
}