/* ============================================================
   CONSULTING CLUB — style.css
   Edit custom properties in :root to re-theme the whole site.
   ============================================================ */

:root {
  /* Palette — change these to re-theme */
  --color-ink:          #1c1917;
  --color-bg:           #fafaf9;
  --color-surface:      #f4f2ee;
  --color-border:       #e5e2db;
  --color-muted:        #78716c;
  --color-accent:       #0f5c7a;
  --color-accent-dark:  #0a4a63;
  --color-cta-bg:       #0f5c7a;
  --color-cta-text:     #ffffff;

  /* Typography */
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body:    -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  /* Layout */
  --max-width:     1120px;
  --content-width: 70ch;
  --px:            clamp(1rem, 4vw, 2rem);

  /* Spacing */
  --sp-xs:  0.25rem;
  --sp-sm:  0.5rem;
  --sp-md:  1rem;
  --sp-lg:  2rem;
  --sp-xl:  4rem;
  --sp-2xl: 6rem;

  --radius:     4px;
  --transition: 0.15s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.72;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition);
}
a:hover { color: var(--color-accent-dark); }

/* ---- Layout ---- */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--px);
}
.content-body {
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--px);
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.22;
  color: var(--color-ink);
}
h1 { font-size: clamp(1.875rem, 4vw, 2.75rem); margin-bottom: var(--sp-lg); }
h2 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); margin-top: var(--sp-xl); margin-bottom: var(--sp-md); }
h3 { font-size: clamp(1.05rem, 2vw, 1.25rem); margin-top: var(--sp-lg); margin-bottom: var(--sp-sm); }

p { margin-bottom: var(--sp-md); }
p:last-child { margin-bottom: 0; }
ul, ol { margin-bottom: var(--sp-md); padding-left: 1.4rem; }
li { margin-bottom: var(--sp-xs); }
li:last-child { margin-bottom: 0; }
strong { font-weight: 600; }

blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--sp-md);
  margin: var(--sp-lg) 0;
  color: var(--color-muted);
  font-style: italic;
}
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--sp-xl) 0;
}

/* ---- Header / Nav ---- */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.875rem;
  gap: var(--sp-lg);
}
.site-logo {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: bold;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.01em;
}
.site-logo:hover { color: var(--color-accent); text-decoration: none; }

.main-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
}
.main-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.main-nav a.nav-cta {
  background: var(--color-cta-bg);
  color: var(--color-cta-text);
  padding: 0.375rem 1rem;
  border-radius: var(--radius);
  border-bottom: none;
}
.main-nav a.nav-cta:hover { background: var(--color-accent-dark); color: var(--color-cta-text); }
.main-nav a.nav-cta.active { background: var(--color-accent-dark); border-bottom: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--sp-md) var(--px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  }
  .main-nav.is-open { display: block; }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: var(--sp-sm); }
  .main-nav a { border-bottom: none; padding-bottom: 0; }
  .main-nav a.active { color: var(--color-accent); }
  .main-nav a.nav-cta { display: inline-block; margin-top: var(--sp-xs); }
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--sp-xl) 0;
  margin-top: var(--sp-2xl);
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm) var(--sp-xl);
  align-items: baseline;
  justify-content: space-between;
}
.footer-brand {
  font-family: var(--font-heading);
  font-weight: bold;
  font-size: 0.9375rem;
  color: var(--color-ink);
  margin: 0;
}
.footer-disclosure,
.footer-copy {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin: 0;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  line-height: 1.4;
}
.btn-primary {
  background: var(--color-cta-bg);
  color: var(--color-cta-text);
  border-color: var(--color-cta-bg);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-cta-text);
  text-decoration: none;
}
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-secondary:hover {
  background: var(--color-accent);
  color: var(--color-cta-text);
  text-decoration: none;
}
.btn-lg { padding: 0.75rem 2rem; font-size: 1.0625rem; }

/* ---- Hero ---- */
.hero {
  padding: var(--sp-2xl) 0;
  text-align: center;
}
.hero .container { max-width: 760px; }
.hero h1 { margin-bottom: var(--sp-md); }
.hero-sub {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 54ch;
  margin-inline: auto;
  margin-bottom: var(--sp-lg);
  line-height: 1.6;
}
.hero-ctas {
  display: flex;
  gap: var(--sp-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Page header (interior pages) ---- */
.page-header {
  padding: var(--sp-xl) 0 var(--sp-lg);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--sp-xl);
}
.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: var(--sp-sm);
}
.breadcrumb a { color: var(--color-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { margin-inline: 0.4em; }
.page-header h1 { margin-bottom: var(--sp-sm); }
.page-tagline {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 58ch;
  line-height: 1.55;
}

/* ---- Category / Library card grid ---- */
.category-intro {
  max-width: 60ch;
  font-size: 1.0625rem;
  color: var(--color-muted);
  margin-bottom: var(--sp-xl);
  line-height: 1.65;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: var(--sp-lg);
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) * 2);
  padding: var(--sp-lg);
  text-decoration: none;
  color: inherit;
  display: block;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px rgba(15, 92, 122, 0.09);
  transform: translateY(-1px);
  text-decoration: none;
  color: inherit;
}
.card-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--sp-sm);
}
.card h3 {
  font-size: 1.0625rem;
  margin: 0 0 var(--sp-sm);
  font-family: var(--font-heading);
  line-height: 1.3;
}
.card p {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
  line-height: 1.55;
}

/* ---- Framework / content pages ---- */
.framework-page { padding-bottom: var(--sp-2xl); }

/* Section labels */
.framework-body h2 {
  font-size: 0.6875rem;
  font-family: var(--font-body);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
  margin-top: var(--sp-xl);
  margin-bottom: var(--sp-md);
  padding-bottom: var(--sp-xs);
  border-bottom: 1px solid var(--color-border);
}

/* "Run it in a session" callout */
.session-callout {
  background: #eef6fa;
  border-left: 4px solid var(--color-accent);
  padding: var(--sp-lg);
  border-radius: 0 calc(var(--radius) * 2) calc(var(--radius) * 2) 0;
  margin: var(--sp-xl) 0;
}
.session-callout h2 {
  font-size: 0.6875rem;
  font-family: var(--font-body);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  border: none;
  padding: 0;
  margin-top: 0;
  margin-bottom: var(--sp-md);
}

/* References box */
.references-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) * 2);
  padding: var(--sp-lg);
  margin-top: var(--sp-xl);
}
.references-box h2 {
  font-size: 0.6875rem;
  font-family: var(--font-body);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
  border: none;
  padding: 0;
  margin-top: 0;
  margin-bottom: var(--sp-md);
}
.references-box ul { margin: 0; }
.references-box li { font-size: 0.9rem; color: var(--color-muted); margin-bottom: var(--sp-sm); }
.references-box li a { color: var(--color-accent); }
.book-list { list-style: none; padding: 0; margin: 0; }
.book-list li {
  padding: var(--sp-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
}
.book-list li:last-child { border-bottom: none; }

/* ---- Session Kit ---- */
.artifact-section {
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) * 2);
  padding: var(--sp-lg);
  margin-bottom: var(--sp-lg);
}
.artifact-section h3 { margin-top: 0; }

.fill-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: var(--sp-xs);
}
.fill-field {
  border-bottom: 1px solid var(--color-border);
  padding: var(--sp-sm) 0;
  margin-bottom: var(--sp-md);
  min-height: 2.5rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.role-card {
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) * 2);
  padding: var(--sp-lg);
  margin-bottom: var(--sp-md);
}
.role-card h3 {
  font-size: 1.0625rem;
  margin-top: 0;
  margin-bottom: var(--sp-xs);
  color: var(--color-accent);
}
.role-card .role-subtitle {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: var(--sp-md);
  font-style: italic;
}

.case-card {
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 calc(var(--radius) * 2) calc(var(--radius) * 2) 0;
  padding: var(--sp-lg);
  margin-bottom: var(--sp-lg);
}
.case-card h3 { margin-top: 0; font-size: 1.125rem; }
.case-meta { display: flex; gap: var(--sp-sm); flex-wrap: wrap; margin-bottom: var(--sp-md); }
.case-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: #eef6fa;
  padding: 0.2em 0.6em;
  border-radius: 3px;
}

.agenda-row {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: var(--sp-md);
  padding: var(--sp-sm) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: baseline;
}
.agenda-row:last-child { border-bottom: none; }
.agenda-time { font-size: 0.875rem; font-weight: 700; color: var(--color-accent); white-space: nowrap; }
.agenda-beat { font-size: 0.9375rem; }
.agenda-beat strong { display: block; margin-bottom: 0.1em; }
.agenda-beat span { color: var(--color-muted); font-size: 0.875rem; }

.scorecard table { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin: var(--sp-md) 0; }
.scorecard th {
  text-align: left;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  padding: var(--sp-sm);
  border-bottom: 2px solid var(--color-border);
}
.scorecard td { padding: var(--sp-sm); border-bottom: 1px solid var(--color-border); vertical-align: top; }
.scorecard tr:last-child td { border-bottom: none; }
.score-boxes { display: flex; gap: 4px; }
.score-box {
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--color-border);
  border-radius: 2px;
  font-size: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
}

/* ---- Forms ---- */
.form-page { padding-bottom: var(--sp-2xl); }
.form-container { max-width: 540px; margin-inline: auto; padding-inline: var(--px); }
form label {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  font-weight: 500;
  font-size: 0.9375rem;
  margin-bottom: var(--sp-md);
}
form input[type="text"],
form input[type="email"],
form textarea {
  padding: 0.625rem 0.875rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
form input:focus,
form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(15, 92, 122, 0.12);
}
form textarea { min-height: 130px; resize: vertical; }
.form-submit { margin-top: var(--sp-lg); }

/* ---- 404 ---- */
.error-page {
  padding: var(--sp-2xl) 0;
  text-align: center;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-md);
}
.error-code {
  font-family: var(--font-heading);
  font-size: clamp(4rem, 12vw, 8rem);
  color: var(--color-border);
  line-height: 1;
}

/* ---- Utility ---- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.text-muted { color: var(--color-muted); }
.text-center { text-align: center; }
.mt-xl { margin-top: var(--sp-xl); }

/* ---- Print ---- */
@media print {
  .site-header, .site-footer, .nav-toggle { display: none !important; }
  body { font-size: 11pt; color: #000; background: #fff; }
  .content-body, .framework-body { max-width: 100%; padding: 0; }
  a { color: #000; text-decoration: none; }
  .session-callout { border-left: 2px solid #000; background: #f5f5f5; }
  .card { border: 1px solid #ccc; margin-bottom: 1rem; page-break-inside: avoid; }
}