/* ============================================================
   Vaughn Heart — portfolio.vaughnheart.com
   Shared stylesheet. One source of truth for every page:
   landing, /ops, /nutrition, and every case study underneath.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #FAF8F5;
  --text: #2D2D2D;
  --text-secondary: #5A5A5A;
  --navy: #1B3A5C;        /* Operations */
  --green: #2D6A4F;        /* Nutrition + "good" results */
  --warm-white: #F0EBE3;
  --border: #E5DDD3;
  --accent: #C8986A;
  --accent-light: #F5EDE3;
  --green-light: #E8F5EE;
  --red: #9B2335;
  --red-light: #FAEAEC;
  --yellow-light: #FFF8E7;
  --navy-light: #E8EEF5;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Outfit', -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ── Shared site chrome ── */
.site-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.75rem 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.site-header .crumb {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.site-header .crumb:hover { color: var(--navy); }

.site-header .wordmark {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  text-decoration: none;
}
.site-header .wordmark:hover { color: var(--navy); }

.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
}
.site-footer a { color: var(--navy); text-decoration: underline; }

/* ============================================================
   LANDING PAGE
   ============================================================ */

.landing-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 5rem;
}

.landing-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 0.75rem;
}

.landing-name {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 600;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.landing-sub {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 480px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

/* Fork signature — one wordmark splitting into two paths.
   Echoes the workflow-arrow language used in every case study. */
.fork {
  width: 100%;
  max-width: 320px;
  height: 56px;
  margin: 0 auto;
  display: block;
}
.fork line, .fork path {
  stroke: var(--border);
  stroke-width: 2;
  fill: none;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.track-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem 1.5rem;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.track-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(27, 58, 92, 0.08);
}

.track-card.ops:hover { border-color: var(--navy); }
.track-card.nutrition:hover { border-color: var(--green); }

.track-eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.track-card.ops .track-eyebrow { color: var(--navy); }
.track-card.nutrition .track-eyebrow { color: var(--green); }

.track-title {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  line-height: 1.25;
}

.track-blurb {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.track-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.track-meta .count { font-weight: 500; }
.track-meta .go {
  font-family: 'DM Mono', monospace;
  transition: transform 0.2s;
}
.track-card:hover .track-meta .go { transform: translateX(3px); }

.track-card.is-empty { opacity: 0.72; }
.track-card.is-empty:hover { transform: none; box-shadow: none; }

@media (max-width: 620px) {
  .card-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   MINI-INDEX (/ops, /nutrition)
   ============================================================ */

.index-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.index-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}
.index-eyebrow.ops { color: var(--navy); }
.index-eyebrow.nutrition { color: var(--green); }

.index-wrap h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0.875rem;
}

.index-sub {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 2.5rem;
  max-width: 560px;
}

.case-list {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  gap: 1rem;
}

.case-row {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1.75rem;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s;
}
.case-row:hover { transform: translateX(3px); }
.case-list.ops .case-row:hover { border-color: var(--navy); }
.case-list.nutrition .case-row:hover { border-color: var(--green); }

.case-row .case-tag {
  font-family: 'DM Mono', monospace;
  font-size: 0.6875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
  display: block;
}

.case-row .case-title {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.case-row .case-blurb {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Empty / coming-soon state */
.empty-state {
  background: var(--warm-white);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 2.5rem 2rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}
.empty-state strong { color: var(--text); }

/* ============================================================
   CASE STUDY PAGES (context, action, results, learning)
   ============================================================ */

.page-wrap {
  display: flex;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  gap: 3rem;
}

.toc-sidebar { width: 220px; flex-shrink: 0; padding-top: 2rem; }
.toc-sticky { position: sticky; top: 2rem; }

.toc-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 0.875rem;
}

.toc-list { list-style: none; border-left: 2px solid var(--border); }

.toc-list li a {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.35rem 0 0.35rem 1rem;
  line-height: 1.4;
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color 0.2s, border-color 0.2s;
}
.toc-list li a:hover, .toc-list li a.active {
  color: var(--navy);
  border-left-color: var(--navy);
}

.main-content { flex: 1; min-width: 0; padding: 1.5rem 0 6rem; }

.meta-tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--navy);
  margin-bottom: 0.75rem;
}

h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: clamp(1.875rem, 4vw, 2.625rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.75rem;
}

.stack-bar {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  padding: 1rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 3.5rem;
}
.stack-bar strong { color: var(--text); font-weight: 600; }

.section { margin-bottom: 4rem; }

h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1.25rem;
  padding-top: 1rem;
}

h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
  margin-top: 2rem;
}

p { color: #4A4A4A; line-height: 1.85; margin-bottom: 1.25rem; font-size: 1rem; }

.divider { border: none; border-top: 1px solid var(--border); margin: 3.5rem 0; }

.carl-badge {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 3px;
  margin-bottom: 0.75rem;
}
.carl-c { background: var(--navy-light); color: var(--navy); }
.carl-a { background: var(--accent-light); color: #7A5030; }
.carl-r { background: var(--green-light); color: var(--green); }
.carl-l { background: var(--yellow-light); color: #7A6020; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}

.stat-card {
  background: var(--warm-white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.25rem 1rem;
  text-align: center;
}
.stat-card .number {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 2.25rem;
  font-weight: 600;
  line-height: 1;
  margin-bottom: 0.4rem;
}
.stat-card .label { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.4; }
.stat-card.good .number { color: var(--green); }
.stat-card.bad .number { color: var(--red); }
.stat-card.neutral .number { color: var(--navy); }

.comparison-table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: 0.9375rem; }
.comparison-table th {
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--border);
}
.comparison-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.5;
}
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table .workflow-label { font-weight: 600; color: var(--text); white-space: nowrap; }
.comparison-table .time-cell { font-family: 'DM Mono', monospace; font-size: 0.875rem; font-weight: 500; }
.time-bad { color: var(--red); }
.time-worse { color: #7A1020; font-weight: 700; }
.time-good { color: var(--green); font-weight: 700; }

.tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  margin-left: 0.4rem;
  vertical-align: middle;
}
.tag-down { background: var(--red-light); color: var(--red); }
.tag-new { background: var(--green-light); color: var(--green); }

.flow-wrap {
  background: var(--warm-white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1.75rem;
  margin: 1.5rem 0;
}
.flow-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.flow-title.old { color: var(--red); }
.flow-title.old-broken { color: #9B5020; }
.flow-title.new { color: var(--green); }

.flow-steps { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 0.5rem; row-gap: 0.625rem; }
.flow-step { display: flex; align-items: center; gap: 0.5rem; }

.step-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.45rem 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.35;
  max-width: 160px;
}
.step-box.automated { background: var(--green-light); border-color: #A8D5BB; color: var(--green); font-weight: 500; }
.step-box.manual { background: #fff; border-color: var(--border); color: var(--text); }
.step-box.error-prone { background: var(--red-light); border-color: #E0B0B8; color: var(--red); }

.arrow { color: var(--text-secondary); font-size: 0.875rem; flex-shrink: 0; user-select: none; }

.flow-time {
  margin-top: 1.25rem;
  padding-top: 0.875rem;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.flow-time .t { font-family: 'DM Mono', monospace; font-weight: 500; font-size: 0.875rem; }
.flow-time.bad .t { color: var(--red); }
.flow-time.worse .t { color: #7A1020; }
.flow-time.good .t { color: var(--green); }

.footnotes { margin-top: 4rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.footnotes h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  margin-top: 0;
}
.footnote-item { font-size: 0.8125rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 0.625rem; display: flex; gap: 0.75rem; }
.fn-num { font-family: 'DM Mono', monospace; font-size: 0.75rem; color: var(--navy); flex-shrink: 0; margin-top: 0.15rem; }
.fn-back { font-family: 'DM Mono', monospace; font-size: 0.75rem; color: var(--navy); text-decoration: none; margin-left: 0.5rem; opacity: 0.7; transition: opacity 0.2s; }
.fn-back:hover { opacity: 1; }

sup { font-family: 'DM Mono', monospace; font-size: 0.65rem; color: var(--navy); cursor: default; }
sup a { color: var(--navy); text-decoration: none; cursor: pointer; }
sup a:hover { text-decoration: underline; }

code {
  font-family: 'DM Mono', monospace;
  font-size: 0.7125rem;
  color: rgb(255, 88, 88);
  background-color: lightgray;
  padding: 0.125rem 0.25rem;
  border-radius: 3px;
  font-weight: 300;
}

.callout {
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.9375rem;
  color: #4A3520;
  line-height: 1.75;
}

@media (max-width: 820px) {
  .page-wrap { flex-direction: column; gap: 0; }
  .toc-sidebar { width: 100%; padding-top: 0; }
  .toc-sticky { position: static; }
  .toc-list { display: flex; flex-wrap: wrap; gap: 0.25rem; border-left: none; padding: 0.5rem 0; }
  .toc-list li a { border-left: none; padding: 0.25rem 0.75rem; border: 1px solid var(--border); border-radius: 20px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-steps { flex-direction: column; }
}