/* =========================================================
   Case Study Pages. Classic Webflow Tribute Style.
   Shared across projects/classic/*.html
   ========================================================= */

:root {
  --navy:        #1B2A41;
  --navy-deep:   #0F1A2A;
  --navy-soft:   #2A3A52;
  --cream:       #F5F1EA;
  --paper:       #FFFFFF;
  --ink:         #1B2A41;
  --ink-2:       #4A5568;
  --ink-3:       #8A95A5;
  --rule:        #D8D2C5;
  --accent:      #C76B4A;
  --accent-soft: #E8B89E;

  --font-display: 'Oswald', 'Lato', sans-serif;
  --font-serif:   'Droid Serif', Georgia, serif;
  --font-body:    'Lato', system-ui, -apple-system, sans-serif;
  --font-narrow:  'PT Sans Narrow', sans-serif;
  --font-mono:    'Ubuntu Mono', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; margin: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent); color: var(--paper); }

h1, h2, h3, h4, h5, h6 { margin: 0; font-family: var(--font-display); font-weight: 400; letter-spacing: 0.01em; }
p { margin: 0 0 1em 0; }
p:last-child { margin: 0; }

/* Top navigation (mirrors index-classic) */
.side-nav {
  position: sticky;
  top: 0;
  width: 100%;
  background: var(--navy-deep);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 14px 40px;
  z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.side-nav .brand-mark {
  width: 52px; height: 52px;
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.22s ease;
  flex: 0 0 auto;
}
.side-nav .brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.side-nav .brand-mark:hover { opacity: 0.75; }
.side-nav .brand-monogram {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(245,241,234,0.26);
  color: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.06em;
}
.side-nav .nav-info { margin-right: auto; }
.side-nav .nav-info h2 {
  font-family: var(--font-display);
  font-size: 14px;
  text-transform: uppercase;
  color: var(--paper);
  letter-spacing: 0.16em;
  font-weight: 500;
  margin-bottom: 2px;
  line-height: 1.2;
}
.side-nav .nav-info .role {
  font-family: var(--font-narrow);
  font-size: 10px;
  text-transform: uppercase;
  color: rgba(245,241,234,0.5);
  letter-spacing: 0.18em;
}
.side-nav nav ul { display: flex; align-items: center; gap: 24px; }
.side-nav nav a {
  font-family: var(--font-narrow);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(245,241,234,0.55);
  transition: color 0.22s ease;
}
.side-nav nav a:hover { color: var(--accent); }
.side-nav .socials { display: flex; gap: 12px; }
.side-nav .socials a {
  width: 32px; height: 32px;
  border: 1px solid rgba(245,241,234,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: rgba(245,241,234,0.6);
  font-size: 11px;
  transition: all 0.22s ease;
}
.side-nav .socials a:hover { border-color: var(--accent); color: var(--accent); }

.page-wrap { margin-left: 0; }

/* Case Hero (navy band like index hero-left) */
.case-hero {
  background: var(--navy);
  color: var(--cream);
  padding: 80px 80px;
  position: relative;
}
.case-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 80px; right: 80px;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(199,107,74,0.4), transparent);
}
.case-hero .inner { max-width: 1280px; margin: 0 auto; }
.case-hero .breadcrumb {
  font-family: var(--font-narrow);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(245,241,234,0.5);
  margin-bottom: 28px;
}
.case-hero .breadcrumb a {
  color: rgba(245,241,234,0.7);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: all 0.22s ease;
}
.case-hero .breadcrumb a:hover { color: var(--accent-soft); border-bottom-color: var(--accent-soft); }

.case-hero .case-num {
  font-family: var(--font-narrow);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--accent);
  margin-bottom: 18px;
}
.case-hero h1 {
  font-family: var(--font-display);
  font-size: 56px;
  line-height: 1.05;
  font-weight: 300;
  color: var(--paper);
  letter-spacing: -0.01em;
  margin-bottom: 36px;
  max-width: 880px;
}
.case-hero .case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  border-top: 1px solid rgba(245,241,234,0.12);
  padding-top: 28px;
}
.case-hero .case-meta > div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.case-hero .case-meta .k {
  font-family: var(--font-narrow);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: rgba(245,241,234,0.45);
}
.case-hero .case-meta .v {
  font-family: var(--font-display);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--paper);
  font-weight: 400;
}

/* Case body (cream paper feel) */
.case-body { background: var(--cream); padding: 80px 80px 40px; }
.case-body .inner { max-width: 1280px; margin: 0 auto; }

.case-block {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  padding: 56px 0;
  border-bottom: 1px solid var(--rule);
}
.case-block:first-child { padding-top: 24px; }
.case-block .marker {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.case-block .marker .num {
  font-family: var(--font-display);
  font-size: 56px;
  line-height: 1;
  color: var(--accent);
  font-weight: 400;
  letter-spacing: -0.02em;
}
.case-block .marker .lbl {
  font-family: var(--font-narrow);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ink-3);
}
.case-block .content h2 {
  font-family: var(--font-display);
  font-size: 26px;
  line-height: 1.25;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 20px;
  max-width: 720px;
}
.case-block .content p {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-2);
  font-weight: 300;
  max-width: 720px;
  margin-bottom: 16px;
}
.case-block .content p strong { color: var(--ink); font-weight: 700; }
.case-block .content p a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: color 0.22s ease;
}
.case-block .content p a:hover { color: var(--ink); border-color: var(--ink); }

.evidence-frame {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--accent);
  padding: 28px;
  margin-top: 24px;
}
.evidence-frame .ev-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-narrow);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ink-3);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 12px;
  margin-bottom: 22px;
  flex-wrap: wrap;
  gap: 12px;
}
.evidence-frame .ev-head .tag {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.22em;
}
.evidence-frame .ev-head .nda {
  font-family: var(--font-narrow);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--accent);
}

.ev-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.ev-tile {
  border: 1px solid var(--rule);
  background: var(--cream);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 160px;
}
.ev-tile .label {
  font-family: var(--font-narrow);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ink-3);
}
.ev-tile h4 {
  font-family: var(--font-display);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink);
  font-weight: 500;
  line-height: 1.25;
  margin: 0;
}

/* Mock chart bars */
.ev-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 70px;
  margin-top: 6px;
}
.ev-bars .bar {
  flex: 1;
  background: var(--rule);
  position: relative;
  border-radius: 1px 1px 0 0;
}
.ev-bars .bar.lift { background: var(--accent); }
.ev-bars .bar .v {
  position: absolute;
  top: -16px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--ink-2);
  white-space: nowrap;
}

/* Mock scenario tree */
.ev-tree {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-2);
  line-height: 1.55;
  white-space: pre;
  overflow-x: auto;
}
.ev-tree .root { color: var(--accent); font-weight: 600; }
.ev-tree .leaf { color: var(--ink-3); }

/* Mock list (LMS modules, changelog rows, dashboard rows) */
.ev-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-2);
}
.ev-list .row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 0;
  border-bottom: 1px dashed var(--rule);
}
.ev-list .row:last-child { border-bottom: 0; }
.ev-list .row .k { color: var(--ink); }
.ev-list .row .v { color: var(--accent); font-weight: 500; }

/* Mock matrix (coverage) */
.ev-matrix {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 3px;
}
.ev-matrix .cell {
  aspect-ratio: 1;
  background: var(--rule);
  border-radius: 1px;
}
.ev-matrix .cell.hit  { background: var(--accent); }
.ev-matrix .cell.warm { background: var(--accent-soft); }

/* Numeric stat block within evidence */
.ev-num {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}
.ev-num .small { font-size: 16px; color: var(--ink-3); margin-left: 4px; }
.ev-caption {
  font-family: var(--font-narrow);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}

@media (max-width: 880px) {
  .ev-grid { grid-template-columns: 1fr; }
  .ev-matrix { grid-template-columns: repeat(6, 1fr); }
}

.stat-row {
  display: flex;
  gap: 32px;
  margin-top: 28px;
  padding: 20px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  flex-wrap: wrap;
}
.stat-row .stat .num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 500;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-row .stat .lbl {
  font-family: var(--font-narrow);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-3);
}

/* Case nav (between blocks and footer) */
.case-nav {
  margin-top: 56px;
  padding: 32px 0;
  border-top: 2px solid var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--font-narrow);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}
.case-nav a {
  color: var(--ink);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 6px;
  transition: color 0.22s ease, border-color 0.22s ease;
}
.case-nav a:hover { color: var(--accent); }
.case-nav .next-label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-3);
  margin-bottom: 6px;
  border: 0;
}

/* Footer (mirrors index-classic) */
.site-footer {
  background: var(--navy-deep);
  color: var(--cream);
  padding: 80px 80px 40px;
}
.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(245,241,234,0.1);
}
.footer-grid h6 {
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--paper);
  font-weight: 500;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 12px;
}
.footer-grid h6::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 32px; height: 1px;
  background: var(--accent);
}
.footer-grid p { font-size: 13px; line-height: 1.75; color: rgba(245,241,234,0.6); }
.footer-sig {
  margin-top: 16px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  color: var(--accent-soft);
}
.footer-nav-list { display: flex; flex-direction: column; gap: 10px; }
.footer-nav-list a {
  font-family: var(--font-narrow);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: rgba(245,241,234,0.65);
  transition: color 0.22s ease;
}
.footer-nav-list a:hover { color: var(--accent); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-contact .row {
  display: flex; gap: 12px; align-items: center;
  font-size: 13px; color: rgba(245,241,234,0.7);
}
.footer-contact .row .ico {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(245,241,234,0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-family: var(--font-narrow);
  font-size: 9px;
  letter-spacing: 0.1em;
}
.footer-contact .row a {
  color: var(--accent-soft);
  border-bottom: 1px solid rgba(232,184,158,0.3);
  transition: color 0.22s ease;
}
.footer-contact .row a:hover { color: var(--paper); }

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-narrow);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(245,241,234,0.4);
}
.footer-bottom a { color: var(--accent-soft); }

/* Responsive */
@media (max-width: 1100px) {
  .side-nav { gap: 20px; padding: 14px 28px; }
  .side-nav nav ul { gap: 16px; }
  .case-hero, .case-body, .site-footer { padding-left: 50px; padding-right: 50px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 48px; }
}

@media (max-width: 880px) {
  .side-nav {
    position: relative;
    flex-wrap: wrap;
    padding: 16px 24px 18px;
    gap: 14px;
  }
  .side-nav .brand-mark { width: 44px; height: 44px; }
  .side-nav .brand-monogram { width: 38px; height: 38px; font-size: 18px; }
  .side-nav .nav-info { margin-right: 0; }
  .side-nav nav { order: 3; width: 100%; }
  .side-nav nav ul { justify-content: flex-start; flex-wrap: wrap; gap: 12px 18px; }
  .side-nav .socials { margin-left: auto; }

  .case-hero { padding: 56px 28px; }
  .case-hero h1 { font-size: 38px; }
  .case-hero .case-meta { gap: 24px; }

  .case-body { padding: 56px 28px 24px; }
  .case-block { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
  .case-block .marker { flex-direction: row; align-items: baseline; gap: 16px; }
  .case-block .marker .num { font-size: 40px; }
  .case-block .content h2 { font-size: 22px; }

  .stat-row { gap: 20px; }
  .case-nav { flex-direction: column; align-items: flex-start; gap: 16px; }

  .site-footer { padding: 56px 28px 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; padding-bottom: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
}