/* ============================================================
   Organizational Refraction — Main Stylesheet
   Target: LCP < 2.5s · Desktop-primary · Mobile responsive
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Brand Identity Guide v1.1 — canonical tokens */
  --navy-deep:      #0D1B2E;   /* backgrounds, headings */
  --navy-mid:       #16284B;   /* secondary surfaces */
  --navy-light:     #20406E;   /* diagrams, tertiary */
  --amber:          #D4860B;   /* CTAs, highlights */
  --amber-light:    #F0AC32;   /* active states, refracted ray */
  --amber-pale:     #FCE6A5;   /* diagram labels */
  --warm-off-white: #F5F3EE;   /* page backgrounds */
  --slate:          #78889A;   /* captions, secondary text on dark surfaces */
  --near-black:     #2C2C2C;   /* body copy — no pure #000000 */

  /* Applied tokens */
  --color-bg:          #F5F3EE;   /* Warm Off-White */
  --color-text:        #2C2C2C;   /* Near-Black */
  --color-text-muted:  #596573;   /* WCAG AA-compliant (4.9:1) secondary text on light bg */
  --color-accent:      #0D1B2E;   /* Navy Deep — structure, nav, headings */
  --color-accent-dark: #16284B;   /* Navy Mid — hover states on nav/outline */
  --color-cta:         #D4860B;   /* Amber — primary CTA buttons */
  --color-cta-dark:    #B8730A;   /* Amber dark — CTA hover */
  --color-border:      #DDD8CE;   /* Warm neutral border */
  --color-bg-subtle:   #EDE9E0;   /* Deeper warm off-white for alternating sections */
  --color-bg-dark:     #0D1B2E;   /* Navy Deep — dark sections, footer */

  --font-sans: 'Inter', Arial, 'Helvetica Neue', sans-serif;
  --font-body: 'Merriweather', Georgia, serif;

  --max-w: 1100px;
  --section-gap: 5rem;
  --section-gap-sm: 3rem;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* UI chrome: navigation, buttons, forms, labels stay Inter */
.btn, button,
input, select, textarea,
.site-header, .site-footer,
.eyebrow, .nav-logo, .nav-links a,
.chapter-item__num, .pub-item__date,
.explainer-item__num, .explainer-item__tag,
.form-group label, .form-note, .form-reassurance,
.email-form__privacy, .capture .eyebrow {
  font-family: var(--font-sans);
}
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.125rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); }
h4 { font-size: 1.0625rem; }
p  { line-height: 1.75; }

.eyebrow {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.container--narrow {
  max-width: 760px;
}

section { padding-block: var(--section-gap); }
section + section { padding-top: 0; }

/* --- Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  height: 64px;
}

.nav-logo {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--color-accent);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--color-text); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff !important;
  background: var(--color-cta);
  padding: 0.5rem 1.125rem;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.15s;
}
.nav-cta:hover { background: var(--color-cta-dark) !important; }

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 0;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 0.875rem 1.5rem; }
  .nav-cta { margin: 0.5rem 1.5rem 1rem; }
  .site-header { position: relative; }
}

/* --- Buttons & CTAs --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.875rem 1.75rem;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-cta);
  color: #fff;
  border-color: var(--color-cta);
}
.btn-primary:hover {
  background: var(--color-cta-dark);
  border-color: var(--color-cta-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  padding-inline: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
  border: none;
}

.btn-arrow::after { content: ' →'; }

/* --- Hero Section --- */
.hero {
  padding-block: 6rem 5rem;
  background: var(--color-bg);
}

.hero__eyebrow { margin-bottom: 1.25rem; }

.hero__headline {
  font-size: clamp(2.25rem, 4.5vw, 3.25rem);
  max-width: 14ch;
  margin-bottom: 1.5rem;
}

.hero__subhead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero__ctas {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.hero__secondary {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  text-decoration: none;
}
.hero__secondary:hover { color: var(--color-text); }

/* --- Pain Section --- */
.pain {
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.pain__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.pain__item {
  padding: 1.75rem 2rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.pain__item-title {
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pain__quote {
  font-size: 1.0625rem;
  font-style: italic;
  color: var(--color-text-muted);
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
  margin-bottom: 1rem;
}

/* --- Explainer Section --- */
.explainer { background: var(--color-bg); }
.explainer__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  margin-top: 2.5rem;
}
.explainer__body p { color: var(--color-text-muted); margin-top: 1rem; }
.explainer__highlight {
  background: var(--color-bg-subtle);
  border-left: 4px solid var(--color-accent);
  padding: 1.5rem 1.75rem;
  border-radius: 0 8px 8px 0;
  font-weight: 600;
  font-size: 1.0625rem;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .explainer__body { grid-template-columns: 1fr; gap: 2rem; }
}

/* --- Section Header --- */
.section-header { margin-bottom: 2.5rem; }
.section-header h2 { margin-top: 0.75rem; }
.section-header p {
  color: var(--color-text-muted);
  max-width: 64ch;
  margin-top: 1rem;
  font-size: 1.0625rem;
}

/* --- Differentiation --- */
.diff { background: var(--color-bg-subtle); }
.diff__content { max-width: 700px; }
.diff__content p { color: var(--color-text-muted); margin-top: 1.25rem; font-size: 1.0625rem; }

/* --- Author Credibility --- */
.author-cred { background: var(--color-bg); }
.author-cred__content { max-width: 680px; }
.author-cred__content p { color: var(--color-text-muted); margin-top: 1rem; font-size: 1.0625rem; }
.author-cred__cta { margin-top: 2rem; }

/* --- Praise / Testimonials --- */
.praise { background: var(--color-bg-subtle); }
.praise__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}
.praise__card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.75rem 2rem;
}
.praise__card blockquote {
  font-size: 1.0625rem;
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.75;
}
.praise__card cite {
  display: block;
  margin-top: 1rem;
  font-style: normal;
  font-weight: 600;
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .praise__grid { grid-template-columns: 1fr; }
}

/* --- Email Capture (Closing CTA) --- */
.capture {
  background: var(--color-bg-dark);
  color: #fff;
}
.capture .eyebrow { color: var(--slate); }
.capture h2 { color: #fff; }
.capture__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 2.5rem;
}
.capture__desc {
  font-size: 1.0625rem;
  color: #D1D5DB;
  line-height: 1.75;
}
.capture__bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
  color: #D1D5DB;
  font-size: 1rem;
}
.capture__bullets li::before { content: '✓  '; color: var(--amber-light); font-weight: 700; }

.email-form { display: flex; flex-direction: column; gap: 1rem; }
.email-form__group {
  display: flex;
  gap: 0.75rem;
}
.email-form input[type="email"] {
  flex: 1;
  padding: 0.875rem 1.125rem;
  font-size: 1rem;
  font-family: inherit;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 6px;
  color: #fff;
  outline: none;
  transition: border-color 0.15s;
}
.email-form input[type="email"]::placeholder { color: var(--slate); }
.email-form input[type="email"]:focus { border-color: rgba(255,255,255,0.5); }
.email-form .btn-primary {
  background: #fff;
  color: var(--color-accent);
  border-color: #fff;
  white-space: nowrap;
}
.email-form .btn-primary:hover { background: #F3F4F6; border-color: #F3F4F6; }
.email-form__privacy {
  font-size: 0.8125rem;
  color: var(--slate);
  line-height: 1.6;
}
.capture__preorder {
  margin-top: 2rem;
  color: #D1D5DB;
  font-size: 0.9375rem;
}
.capture__preorder a { color: var(--amber-light); text-decoration: underline; text-underline-offset: 2px; }

.form-success {
  display: none;
  background: rgba(16,185,129,0.12);
  border: 1px solid rgba(16,185,129,0.3);
  color: #6EE7B7;
  padding: 1rem 1.25rem;
  border-radius: 6px;
  font-size: 0.9375rem;
}

@media (max-width: 768px) {
  .capture__body { grid-template-columns: 1fr; gap: 2.5rem; }
  .email-form__group { flex-direction: column; }
}

/* --- Chapter List (Book page) --- */
.chapters { background: var(--color-bg); }
.chapters__parts {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  margin-top: 2.5rem;
}
.chapter-part { }
.chapter-part__title {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}
.chapter-list { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.chapter-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-bg-subtle);
  border-radius: 6px;
  border: 1px solid var(--color-border);
}
.chapter-item__num {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
  padding-top: 0.1rem;
}
.chapter-item__title { font-weight: 600; margin-bottom: 0.375rem; }
.chapter-item__desc { font-size: 0.9375rem; color: var(--color-text-muted); }

/* --- Who It's For (Book page) --- */
.audience { background: var(--color-bg-subtle); }
.audience__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}
.audience__card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
}
.audience__card--for { border-top: 3px solid var(--color-accent); }
.audience__card--not { border-top: 3px solid #D1D5DB; }
.audience__card h3 { margin-bottom: 1.25rem; }
.audience__card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.audience__card li { font-size: 0.9375rem; color: var(--color-text-muted); padding-left: 1.25rem; position: relative; }
.audience__card--for li::before { content: '✓'; position: absolute; left: 0; color: var(--color-accent); font-weight: 700; }
.audience__card--not li::before { content: '—'; position: absolute; left: 0; color: var(--slate); }

@media (max-width: 768px) {
  .audience__grid { grid-template-columns: 1fr; }
}

/* --- Bio Page (Author) --- */
.bio { background: var(--color-bg); }
.bio__content { max-width: 700px; }
.bio__content p { color: var(--color-text-muted); font-size: 1.0625rem; margin-top: 1rem; }

.publications { background: var(--color-bg-subtle); }
.pub-list { list-style: none; display: flex; flex-direction: column; gap: 1rem; margin-top: 2rem; }
.pub-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}
.pub-item__date { font-size: 0.8125rem; color: var(--slate); white-space: nowrap; flex-shrink: 0; padding-top: 0.1rem; }
.pub-item__title { font-weight: 600; font-size: 0.9375rem; }

.case-studies { background: var(--color-bg); }
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.case-card {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.75rem 1.5rem;
}
.case-card__org { font-size: 1.125rem; font-weight: 700; color: var(--color-accent); margin-bottom: 0.75rem; }
.case-card__desc { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.65; }

@media (max-width: 768px) {
  .case-grid { grid-template-columns: 1fr; }
}

/* --- Resources Page --- */
.diagnostic-cta {
  background: var(--color-accent);
  color: #fff;
  padding-block: 5rem;
}
.diagnostic-cta .eyebrow { color: var(--amber-light); }
.diagnostic-cta h2 { color: #fff; margin-bottom: 0.75rem; }
.diagnostic-cta__subhead { font-size: 1.125rem; color: rgba(255,255,255,0.8); margin-bottom: 2rem; max-width: 52ch; }
.diagnostic-cta__yields {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 2.5rem;
}
.diagnostic-cta__yields li { font-size: 1rem; color: rgba(255,255,255,0.85); padding-left: 1.5rem; position: relative; }
.diagnostic-cta__yields li::before { content: '→'; position: absolute; left: 0; color: var(--amber-light); font-weight: 700; }
.diagnostic-form { max-width: 480px; }
.diagnostic-form .email-form { }
.diagnostic-form .email-form__group { flex-direction: column; }
.diagnostic-form input[type="email"] {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.3);
}
.diagnostic-form .btn-primary { background: #fff; color: var(--color-accent); border-color: #fff; width: 100%; justify-content: center; }
.diagnostic-form .btn-primary:hover { background: #F3F4F6; border-color: #F3F4F6; }
.diagnostic-cta__privacy { font-size: 0.8125rem; color: rgba(255,255,255,0.5); margin-top: 0.75rem; }

.excerpt { background: var(--color-bg-subtle); }
.excerpt__content { max-width: 680px; }
.excerpt__body {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem 2.5rem;
  margin-top: 1.5rem;
}
.excerpt__body p { color: var(--color-text-muted); font-size: 1.0625rem; margin-top: 1rem; }

.explainers { background: var(--color-bg); }
.explainer-list { list-style: none; display: flex; flex-direction: column; gap: 1rem; margin-top: 2rem; }
.explainer-item {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}
.explainer-item__num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(13,27,46,0.08);
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.explainer-item__title { font-weight: 600; margin-bottom: 0.375rem; }
.explainer-item__desc { font-size: 0.9375rem; color: var(--color-text-muted); }
.explainer-item__tag { font-size: 0.75rem; color: var(--slate); margin-top: 0.375rem; }

/* --- Speaking Page --- */
.speaking-hero { background: var(--color-bg); }
.formats { background: var(--color-bg-subtle); }
.format-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.format-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  border-radius: 8px;
  padding: 2rem 1.75rem;
}
.format-card__duration { font-size: 0.8125rem; color: var(--color-accent); font-weight: 700; margin-bottom: 0.5rem; }
.format-card h3 { margin-bottom: 0.75rem; }
.format-card p { font-size: 0.9375rem; color: var(--color-text-muted); }

@media (max-width: 768px) {
  .format-grid { grid-template-columns: 1fr; }
}

.inquiry-form { background: var(--color-bg); }
.form-card {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 3rem;
  max-width: 680px;
}
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.375rem; }
.form-group label { font-size: 0.875rem; font-weight: 600; color: var(--color-text); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(13,27,46,0.08); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.8125rem; color: var(--color-text-muted); margin-top: 0.25rem; }
.form-submit-area { display: flex; flex-direction: column; gap: 0.75rem; }
.form-reassurance { font-size: 0.8125rem; color: var(--color-text-muted); }

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 2rem 1.5rem; }
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  padding-block: 4rem 3.5rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.page-hero h1 { margin-top: 0.75rem; }
.page-hero__desc {
  margin-top: 1rem;
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 56ch;
  line-height: 1.75;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--slate);
  padding-block: 3rem;
  border-top: 1px solid rgba(245,243,238,0.06);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-logo { font-weight: 700; color: var(--warm-off-white); font-size: 0.9375rem; }
.footer-links { display: flex; gap: 1.5rem; list-style: none; flex-wrap: wrap; }
.footer-links a {
  font-size: 0.875rem;
  color: var(--slate);
  text-decoration: none;
  transition: color 0.15s;
}
.footer-links a:hover { color: var(--warm-off-white); }
.footer-copy { font-size: 0.8125rem; color: var(--slate); }

@media (max-width: 600px) {
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
}

/* --- Utilities --- */
.text-muted { color: var(--color-text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 2.5rem; }

/* --- Form success state --- */
.form-success-visible { display: block !important; }