/* ============================================================
   CX90 Advisory — Stylesheet
   Editorial, institutional, typography-led
   ============================================================ */

/* ── Reset & Base ─────────────────────────────────────────── */

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

:root {
  --bg:        #f6f5f2;
  --white:     #ffffff;
  --charcoal:  #191917;
  --mid:       #3c3c39;
  --muted:     #6b6b66;
  --border:    #d8d5cf;
  --navy:      #15213a;
  --navy-mid:  #1e3058;
  --cream:     #edeae4;

  --serif:     Georgia, 'Times New Roman', Times, serif;
  --sans:      -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  --max:       1160px;
  --prose:     720px;

  --space-xs:  0.5rem;
  --space-s:   1rem;
  --space-m:   2rem;
  --space-l:   3.5rem;
  --space-xl:  6rem;
  --space-2xl: 10rem;
}

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

body {
  background: var(--bg);
  color: var(--charcoal);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

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

/* ── Layout Utilities ─────────────────────────────────────── */

.wrap {
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--space-m);
}

.prose {
  max-width: var(--prose);
}

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

/* ── Navigation ───────────────────────────────────────────── */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.25rem;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--charcoal);
  font-weight: normal;
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
  gap: 0;
}

.nav-logo span {
  color: var(--navy);
  position: relative;
  bottom: 0.055em;            /* compensate Georgia's old-style numeral descenders */
  font-variant-numeric: lining-nums;
  font-feature-settings: "lnum" 1;
}

.nav-links {
  display: flex;
  gap: 2.25rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--charcoal);
}

.nav-links a.nav-cta {
  color: var(--navy);
  border: 1px solid var(--navy);
  padding: 0.45rem 1rem;
  letter-spacing: 0.06em;
  transition: background 0.2s, color 0.2s;
}

.nav-links a.nav-cta:hover {
  background: var(--navy);
  color: var(--white);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--charcoal);
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  padding-bottom: 1rem;
}

.mobile-menu a {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
}

.mobile-menu a:last-child { border-bottom: none; }

/* ── Typography ───────────────────────────────────────────── */

.label {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--space-m);
}

.label-navy {
  color: var(--navy-mid);
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: normal;
  line-height: 1.2;
  color: var(--charcoal);
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.75rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.5rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

.hero-headline {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5.5vw, 4.25rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: normal;
  max-width: 820px;
}

.section-headline {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.2vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: normal;
}

p.lead {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--mid);
  max-width: 620px;
}

p.body-text {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--mid);
}

/* ── Buttons / CTAs ───────────────────────────────────────── */

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.85rem 1.75rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  cursor: pointer;
}

.btn-dark {
  background: var(--charcoal);
  color: var(--white);
  border: 1px solid var(--charcoal);
}

.btn-dark:hover {
  background: var(--navy);
  border-color: var(--navy);
}

.btn-outline {
  background: transparent;
  color: var(--charcoal);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--charcoal);
}

.btn-navy {
  background: var(--navy);
  color: var(--white);
  border: 1px solid var(--navy);
}

.btn-navy:hover {
  background: var(--charcoal);
  border-color: var(--charcoal);
}

/* ── Hero Section ─────────────────────────────────────────── */

.hero {
  padding-block: var(--space-xl) var(--space-2xl);
  border-bottom: 1px solid var(--border);
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: var(--space-l);
}

.hero-line {
  width: 40px;
  height: 1px;
  background: var(--muted);
}

.hero-subline {
  margin-top: var(--space-l);
  max-width: 560px;
}

.hero-ctas {
  display: flex;
  gap: var(--space-s);
  margin-top: var(--space-l);
  flex-wrap: wrap;
}

/* ── Section Spacing ──────────────────────────────────────── */

section {
  padding-block: var(--space-xl);
}

section + section {
  border-top: 1px solid var(--border);
}

/* ── Section Header ───────────────────────────────────────── */

.section-header {
  margin-bottom: var(--space-l);
}

.section-header .section-headline {
  margin-top: var(--space-xs);
}

/* ── Pressure Cards (Homepage) ────────────────────────────── */

.pressure-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  margin-top: var(--space-l);
}

.pressure-card {
  padding: var(--space-m) 1.75rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pressure-card:nth-child(3n) {
  border-right: none;
}

.pressure-card:nth-child(4),
.pressure-card:nth-child(5),
.pressure-card:nth-child(6) {
  border-bottom: none;
}

.pressure-card p {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--charcoal);
}

.pressure-num {
  font-family: var(--serif);
  font-size: 0.8125rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
  display: block;
}

/* ── CX90 View (2-col editorial) ──────────────────────────── */

.view-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
  margin-top: var(--space-l);
}

.view-conditions {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.view-condition {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
  color: var(--mid);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.view-condition::before {
  content: '—';
  color: var(--navy);
  font-family: var(--serif);
  flex-shrink: 0;
}

.view-condition:first-child {
  border-top: 1px solid var(--border);
}

/* ── Advisory Areas Cards ─────────────────────────────────── */

.advisory-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  border: 1px solid var(--border);
  margin-top: var(--space-l);
}

.advisory-card {
  padding: var(--space-m) 1.5rem;
  border-right: 1px solid var(--border);
  transition: background 0.2s;
}

.advisory-card:last-child {
  border-right: none;
}

.advisory-card:hover {
  background: var(--cream);
}

.advisory-card h4 {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: normal;
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.advisory-card p {
  font-size: 0.8125rem;
  color: var(--mid);
  line-height: 1.6;
}

/* ── Perspectives / Essay Cards ───────────────────────────── */

.perspectives-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
  margin-top: var(--space-l);
}

.essay-card {
  padding: var(--space-m) 0;
  padding-right: var(--space-m);
  border-bottom: 1px solid var(--border);
}

.essay-card:not(:last-child) {
  border-right: 1px solid var(--border);
  padding-right: var(--space-m);
}

.essay-card:not(:first-child) {
  padding-left: var(--space-m);
}

.essay-meta {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--space-s);
}

.essay-title {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: normal;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  color: var(--charcoal);
}

.essay-excerpt {
  font-size: 0.875rem;
  color: var(--mid);
  line-height: 1.7;
  margin-bottom: var(--space-s);
}

.essay-read-more {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy);
  border-bottom: 1px solid var(--navy);
  padding-bottom: 1px;
}

/* ── About Strip (Homepage) ───────────────────────────────── */

.about-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

/* ── Contact Strip (Homepage) ─────────────────────────────── */

.contact-strip {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-xl);
}

.contact-strip-left { flex: 1; }
.contact-strip-right {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-s);
  padding-top: 0.5rem;
}

.contact-email {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--mid);
}

/* ── Interior Page Hero ───────────────────────────────────── */

.page-hero {
  padding-block: var(--space-xl) var(--space-l);
  border-bottom: 1px solid var(--border);
}

.page-hero .hero-headline {
  margin-top: var(--space-s);
}

/* ── Advisory Page ────────────────────────────────────────── */

.intervention-list {
  margin-top: var(--space-l);
  display: flex;
  flex-direction: column;
}

.intervention-item {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-m);
  padding-block: var(--space-m);
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.intervention-item:first-child {
  border-top: 1px solid var(--border);
}

.intervention-name {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: normal;
  line-height: 1.3;
}

.intervention-desc {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--mid);
}

.intervention-sub {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.intervention-sub span {
  font-size: 0.8125rem;
  color: var(--muted);
}

.intervention-sub span::before {
  content: '· ';
  color: var(--navy);
}

/* ── Assessment Page ──────────────────────────────────────── */

.diagnostic-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  margin-top: var(--space-l);
}

.diagnostic-item {
  padding: var(--space-m) 1.75rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.diagnostic-item:nth-child(2n) {
  border-right: none;
}

.diagnostic-item:nth-last-child(-n+2) {
  border-bottom: none;
}

.diagnostic-num {
  font-family: var(--serif);
  font-size: 1.8rem;
  color: var(--navy);
  display: block;
  margin-bottom: 0.5rem;
  opacity: 0.35;
}

.diagnostic-item h4 {
  margin-bottom: 0.5rem;
}

.diagnostic-item p {
  font-size: 0.875rem;
  color: var(--mid);
  line-height: 1.65;
}

/* ── Perspectives Archive ─────────────────────────────────── */

.archive-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  padding-bottom: var(--space-s);
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.archive-list {
  display: flex;
  flex-direction: column;
}

.archive-item {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-m);
  padding-block: var(--space-m);
  border-bottom: 1px solid var(--border);
  align-items: start;
  transition: background 0.15s;
}

.archive-item:hover {
  background: var(--cream);
  margin-inline: -2rem;
  padding-inline: 2rem;
}

.archive-item-title {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: normal;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.archive-item-excerpt {
  font-size: 0.875rem;
  color: var(--mid);
  line-height: 1.65;
}

.archive-item-right {
  text-align: right;
  padding-top: 0.25rem;
}

.archive-topic {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: 0.5rem;
}

.archive-date {
  font-size: 0.8rem;
  color: var(--muted);
  font-family: var(--serif);
}

/* ── About Page ───────────────────────────────────────────── */

.about-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-l);
  align-items: start;
}

.about-principles {
  margin-top: var(--space-l);
  display: flex;
  flex-direction: column;
}

.principle-item {
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--mid);
}

.principle-item:first-child {
  border-top: 1px solid var(--border);
}

.principle-item strong {
  display: block;
  font-family: var(--serif);
  font-weight: normal;
  font-size: 1rem;
  color: var(--charcoal);
  margin-bottom: 0.25rem;
}

/* ── Contact Page ─────────────────────────────────────────── */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-l);
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.form-group input,
.form-group textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 0;
  font-family: var(--sans);
  font-size: 0.9375rem;
  color: var(--charcoal);
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--charcoal);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--muted);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.65;
}

.contact-info {
  padding-top: 0.5rem;
}

.contact-info-email {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--mid);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-m);
  margin-bottom: var(--space-m);
}

.contact-info-email a:hover {
  color: var(--charcoal);
}

.contact-note {
  font-size: 0.875rem;
  color: var(--mid);
  line-height: 1.7;
}

/* ── Navy Block ───────────────────────────────────────────── */

.navy-block {
  background: var(--navy);
  padding-block: var(--space-xl);
  border-top: none;
}

.navy-block * {
  color: var(--white);
}

.navy-block .label {
  color: rgba(255,255,255,0.4);
}

.navy-block p.lead {
  color: rgba(255,255,255,0.65);
}

.navy-block .divider {
  border-color: rgba(255,255,255,0.12);
}

.navy-block .btn-outline {
  border-color: rgba(255,255,255,0.4);
  color: var(--white);
}

.navy-block .btn-outline:hover {
  border-color: var(--white);
}

/* ── Footer ───────────────────────────────────────────────── */

.site-footer {
  background: var(--charcoal);
  padding-block: var(--space-l);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  flex-wrap: wrap;
}

.footer-logo {
  font-family: var(--serif);
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: rgba(255,255,255,0.7);
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.25);
}

/* ── Inline Pull ──────────────────────────────────────────── */

.pull-quote {
  border-left: 2px solid var(--navy);
  padding-left: 1.5rem;
  margin-block: var(--space-l);
}

.pull-quote p {
  font-family: var(--serif);
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--charcoal);
}

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 900px) {
  .pressure-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pressure-card:nth-child(2n) { border-right: none; }
  .pressure-card:nth-child(3n) { border-right: 1px solid var(--border); }
  .pressure-card:nth-child(5),
  .pressure-card:nth-child(6) { border-bottom: none; }
  .pressure-card:nth-child(3),
  .pressure-card:nth-child(4) { border-bottom: 1px solid var(--border); }
  .pressure-card:nth-child(3) { border-right: none; }
  .pressure-card:nth-child(4) { border-right: 1px solid var(--border); }

  .view-grid { grid-template-columns: 1fr; gap: var(--space-l); }
  .advisory-cards { grid-template-columns: repeat(2, 1fr); }
  .advisory-card:nth-child(2n) { border-right: none; }
  .advisory-card:nth-child(odd) { border-bottom: 1px solid var(--border); }

  .perspectives-grid {
    grid-template-columns: 1fr;
  }

  .essay-card { border-right: none !important; padding-left: 0 !important; }

  .about-strip { grid-template-columns: 1fr; gap: var(--space-l); }
  .contact-strip { flex-direction: column; gap: var(--space-l); }

  .intervention-item { grid-template-columns: 1fr; gap: var(--space-s); }

  .about-columns { grid-template-columns: 1fr; gap: var(--space-l); }
  .contact-layout { grid-template-columns: 1fr; gap: var(--space-l); }

  .archive-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .archive-item-right { text-align: left; }
}

@media (max-width: 680px) {
  :root {
    --space-xl: 4rem;
    --space-2xl: 6rem;
  }

  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .mobile-menu.open { display: flex; }

  .pressure-grid { grid-template-columns: 1fr; }
  .pressure-card { border-right: none !important; }
  .pressure-card:not(:last-child) { border-bottom: 1px solid var(--border) !important; }
  .pressure-card:last-child { border-bottom: none !important; }

  .advisory-cards { grid-template-columns: 1fr; }
  .advisory-card { border-right: none; border-bottom: 1px solid var(--border); }
  .advisory-card:last-child { border-bottom: none; }

  .diagnostic-grid { grid-template-columns: 1fr; }
  .diagnostic-item { border-right: none !important; }
  .diagnostic-item:not(:last-child) { border-bottom: 1px solid var(--border) !important; }
  .diagnostic-item:last-child { border-bottom: none !important; }

  .hero-ctas { flex-direction: column; }
  .btn { text-align: center; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .footer-links { flex-wrap: wrap; gap: 1rem; }

  .archive-item:hover {
    margin-inline: 0;
    padding-inline: 0;
  }
}


/* Final CX90 wordmark integration */
.nav-logo {
  display: inline-flex;
  align-items: center;
  line-height: 1;
  text-decoration: none;
}

.brand-logo {
  height: 34px;
  width: auto;
  display: block;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
}

.footer-brand-logo {
  height: 30px;
  width: auto;
  display: block;
}

@media (max-width: 768px) {
  .brand-logo {
    height: 28px;
  }

  .footer-brand-logo {
    height: 26px;
  }
}