/* ============================================================
   PERSONALITY TRAIL — Global Stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500;1,600&family=Lato:ital,wght@0,300;0,400;0,700;1,300;1,400&display=swap');

/* ─── Custom Properties ─────────────────────────────────────── */

:root {
  /* Raw palette */
  --limestone:      #EFEBE4;
  --loam:           #1E1D19;
  --rust:           #AD5D4E;
  --lichen:         #6A7B62;
  --limestone-warm: #E4DDD4;
  --loam-mid:       #2A2925;
  --loam-soft:      #4A4740;

  /* Theme tokens (light) */
  --bg:             var(--limestone);
  --bg-2:           var(--limestone-warm);
  --text:           var(--loam);
  --text-muted:     var(--loam-soft);
  --accent:         var(--rust);
  --accent-alt:     var(--lichen);
  --border:         rgba(30, 29, 25, 0.09);

  /* Typography */
  --serif:  'EB Garamond', 'Garamond', 'Georgia', serif;
  --sans:   'Lato', 'Optima', 'Gill Sans MT', 'Trebuchet MS', sans-serif;

  /* Layout */
  --max-w:      1380px;
  --gutter:     clamp(1.5rem, 5vw, 4.5rem);
  --section-v:  clamp(6rem, 10vw, 12rem);

  /* Transitions */
  --breath: all 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --soft:   all 600ms  cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --quick:  all 280ms  cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] {
  --bg:         var(--loam);
  --bg-2:       var(--loam-mid);
  --text:       var(--limestone);
  --text-muted: #908A83;
  --accent:     #C47060;
  --accent-alt: #7D9277;
  --border:     rgba(239, 235, 228, 0.08);
}

/* ─── Reset ─────────────────────────────────────────────────── */

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.72;
  transition: background-color 700ms ease, color 700ms ease;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul[role="list"], ul.nav-center, ul.footer-nav, ul.nav-drawer-links { list-style: none; }

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

.t-display {
  font-family: var(--serif);
  font-size: clamp(3.6rem, 9vw, 9.5rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  font-weight: 400;
}

.t-headline {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5vw, 5.5rem);
  line-height: 1.0;
  letter-spacing: -0.025em;
  font-weight: 400;
}

.t-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  font-weight: 400;
}

.t-article-title {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.2vw, 2.1rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 400;
}

.t-lead {
  font-size: clamp(1.05rem, 1.55vw, 1.3rem);
  line-height: 1.65;
  font-weight: 300;
}

.t-body {
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  line-height: 1.82;
  font-weight: 300;
}

.t-caption {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 400;
}

.t-eyebrow {
  font-size: 0.73rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 400;
  color: var(--accent-alt);
}

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

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

.section { padding-block: var(--section-v); }

/* ─── Topographic SVG Background Art ────────────────────────── */

.topo-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
  color: var(--text);
  opacity: 0.05;
}

[data-theme="dark"] .topo-layer { opacity: 0.032; }

.topo-layer svg {
  width: 100%;
  height: 100%;
}

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

.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 1.6rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  transition: var(--soft);
}

.site-nav.scrolled {
  background: rgba(239, 235, 228, 0.92);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
}

[data-theme="dark"] .site-nav.scrolled {
  background: rgba(30, 29, 25, 0.92);
}

.nav-brand {
  font-family: var(--serif);
  font-size: 1.12rem;
  letter-spacing: 0.05em;
  color: var(--text);
  flex-shrink: 0;
  transition: color var(--soft);
}

.nav-brand em {
  color: var(--accent);
  font-style: normal;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 2.8rem;
}

.nav-center a {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: var(--soft);
  position: relative;
  padding-bottom: 2px;
}

.nav-center a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 600ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.nav-center a:hover,
.nav-center a.active { color: var(--text); }

.nav-center a:hover::after,
.nav-center a.active::after { transform: scaleX(1); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

/* Theme toggle */
.theme-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--soft);
  border-radius: 50%;
}

.theme-btn:hover { color: var(--text); }
.theme-btn svg { width: 1.05rem; height: 1.05rem; stroke-width: 1.5; }

.icon-moon { display: block; }
.icon-sun  { display: none; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun  { display: block; }

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.2rem;
  width: 2.2rem;
  height: 2.2rem;
}

.nav-hamburger span {
  display: block;
  width: 1.4rem;
  height: 1px;
  background: var(--text);
  transition: var(--quick);
}

.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

/* ─── Mobile nav drawer (full-screen) ───────────────────────── */
.nav-drawer {
  position: fixed;
  inset: 0;
  background: var(--bg);
  padding: 2rem var(--gutter) var(--gutter);
  display: flex;
  flex-direction: column;
  transform: translateX(110%);
  transition: transform 500ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: 90;
  overflow-y: auto;
}

.nav-drawer.open { transform: translateX(0); }

/* Header row — brand + close button */
.nav-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
  flex-shrink: 0;
}

.nav-drawer-brand {
  font-family: var(--serif);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: var(--text);
}

.nav-drawer-brand em {
  color: var(--accent);
  font-style: normal;
}

.nav-drawer-close {
  background: none;
  border: none;
  color: var(--text-muted);
  width: 2.2rem;
  height: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--soft);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-drawer-close:hover { color: var(--text); }

/* Nav link list */
.nav-drawer-links {
  flex: 1;
}

.nav-drawer-links li {
  border-bottom: 1px solid var(--border);
}

.nav-drawer-links a {
  display: block;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 8vw, 2.5rem);
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--text-muted);
  transition: color var(--soft);
  padding: 1.2rem 0;
}

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

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30, 29, 25, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 500ms ease;
  z-index: 89;
}

.nav-overlay.open { opacity: 1; pointer-events: all; }

/* ─── Image Component ────────────────────────────────────────── */

.img-wrap {
  overflow: hidden;
  position: relative;
}

.img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72);
  transition: transform 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
              filter   1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] .img-wrap img {
  filter: saturate(0.55) brightness(0.82);
}

.img-wrap:hover img {
  transform: scale(1.028);
  filter: saturate(0.85);
}

[data-theme="dark"] .img-wrap:hover img {
  filter: saturate(0.65) brightness(0.88);
}

/* ─── CTA Buttons ────────────────────────────────────────────── */

.cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1rem 2.6rem;
  background: var(--accent);
  color: #EFEBE4;
  font-family: var(--sans);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 400;
  border: none;
  transition: var(--soft);
}

.cta-primary:hover {
  background: var(--text);
  color: var(--bg);
}

.cta-text {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-weight: 400;
  color: var(--accent);
  position: relative;
}

.cta-text::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(1);
  transform-origin: left;
  transition: transform 650ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cta-text:hover::after {
  transform: scaleX(0);
  transform-origin: right;
}

/* ─── Tags ───────────────────────────────────────────────────── */

.tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 400;
  color: var(--accent-alt);
}

.tag-rust { color: var(--accent); }

/* ─── Pull Quote ─────────────────────────────────────────────── */

.pull-quote {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.4vw, 2.1rem);
  font-style: italic;
  line-height: 1.35;
  color: var(--accent);
  padding: 2rem 0 2rem 2.5rem;
  border-left: 2px solid var(--accent);
  margin-block: 4rem;
  opacity: 0.92;
}

/* ─── Article Zone (fluid editorial — no card, no border) ────── */

.article-zone {
  cursor: pointer;
}

.article-zone .az-title {
  transition: color 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.article-zone:hover .az-title {
  color: var(--accent);
}

.article-zone .az-excerpt {
  transition: opacity 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.article-zone:hover .az-excerpt { opacity: 0.6; }

/* Decorative article number */
.az-num {
  font-family: var(--serif);
  font-size: clamp(4rem, 8vw, 7rem);
  line-height: 1;
  color: var(--text);
  opacity: 0.05;
  font-weight: 400;
  pointer-events: none;
  user-select: none;
}

/* ─── Article Body (long-form reading) ──────────────────────── */

.article-body {
  font-size: clamp(0.97rem, 1.12vw, 1.07rem);
  line-height: 1.85;
  font-weight: 300;
  max-width: 68ch;
}

.article-body p { margin-bottom: 1.5em; }
.article-body p:last-child { margin-bottom: 0; }

.article-body h2 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.6vw, 2.3rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin-top: 3.8em;
  margin-bottom: 0.85em;
}

.article-body h3 {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.8vw, 1.65rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.25;
  margin-top: 2.8em;
  margin-bottom: 0.65em;
}

.article-body h4 {
  font-family: var(--sans);
  font-size: 0.73rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 2.2em;
  margin-bottom: 0.6em;
}

.article-body blockquote {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.8vw, 1.55rem);
  font-style: italic;
  line-height: 1.4;
  color: var(--accent);
  padding: 1.8rem 0 1.8rem 2.2rem;
  border-left: 2px solid var(--accent);
  margin: 3.5rem 0;
}

.article-body strong {
  font-weight: 700;
}

/* ─── Scroll Reveal ──────────────────────────────────────────── */
/*
 * Two-phase approach:
 *  1. Elements already in the viewport on page load  → .visible is added
 *     immediately (no transition) so they're never invisible.
 *  2. Elements below the fold → JS adds .animate before observing them,
 *     enabling the transition only for those elements.
 *
 * This guarantees above-fold content is never hidden regardless of JS
 * timing, while below-fold content still gets the reveal animation.
 */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  /* No transition here — added only for below-fold items via .animate */
}

.reveal.animate {
  transition: opacity 900ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 900ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.visible { opacity: 1; transform: translateY(0); }

/* Stagger delays apply only when transition is active */
.reveal.animate.reveal-d1 { transition-delay: 100ms; }
.reveal.animate.reveal-d2 { transition-delay: 220ms; }
.reveal.animate.reveal-d3 { transition-delay: 360ms; }
.reveal.animate.reveal-d4 { transition-delay: 480ms; }

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

.site-footer {
  padding-block: 5.5rem 3rem;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 3rem 4rem;
  align-items: start;
}

.footer-brand {
  font-family: var(--serif);
  font-size: 1.6rem;
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.footer-brand em {
  color: var(--accent);
  font-style: normal;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.7rem;
  max-width: 38ch;
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.footer-nav a {
  font-size: 0.76rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--soft);
}

.footer-nav a:hover { color: var(--text); }

.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.7rem;
  color: var(--text-muted);
  opacity: 0.55;
  letter-spacing: 0.04em;
}

/* ─── Section Divider (typographic, no lines) ────────────────── */

.section-label {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: clamp(3rem, 5vw, 5rem);
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ─── Article Page Layout (shared across all article pages) ─── */

.article-page-header {
  padding-top: 9rem;
  padding-bottom: 0;
  position: relative;
  overflow: hidden;
}

.article-page-header-inner {
  position: relative;
  z-index: 1;
  max-width: 74ch;
  padding-bottom: 4rem;
}

.article-tag-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.8rem;
}

.article-tag-row .tag-num {
  font-family: var(--serif);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  opacity: 0.55;
}

.article-page-title {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 5.8rem);
  line-height: 1.0;
  letter-spacing: -0.03em;
  font-weight: 400;
  margin-bottom: 2rem;
}

.article-page-title em {
  font-style: italic;
  color: var(--accent);
}

.article-intro {
  color: var(--text-muted);
  max-width: 58ch;
  margin-bottom: 2.5rem;
}

.article-hero {
  width: 100%;
  height: clamp(320px, 45vw, 580px);
  position: relative;
  overflow: hidden;
}

.article-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.65) brightness(0.97);
}

[data-theme="dark"] .article-hero img {
  filter: saturate(0.5) brightness(0.78);
}

.article-hero::after {
  content: '';
  position: absolute;
  inset: auto 0 0 0;
  height: 35%;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
  transition: background 700ms ease;
}

.article-reading { padding-top: clamp(4rem, 7vw, 7rem); }

.article-reading-inner {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(3rem, 5vw, 6rem);
  align-items: start;
}

.article-sticky-aside {
  position: sticky;
  top: 8rem;
  padding-top: 0.3rem;
}

.aside-label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  opacity: 0.6;
}

.aside-title {
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.4;
  font-weight: 400;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.aside-nav {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.aside-nav a {
  font-size: 0.73rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  transition: color var(--soft);
  line-height: 1.4;
  opacity: 0.7;
}

.aside-nav a:hover { color: var(--accent); opacity: 1; }

.related-section {
  margin-top: clamp(6rem, 10vw, 10rem);
  padding-top: clamp(3rem, 5vw, 5rem);
  border-top: 1px solid var(--border);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
  margin-top: 3rem;
}

.related-item .az-img {
  height: clamp(160px, 18vw, 220px);
  margin-bottom: 1.2rem;
}

.related-item .rel-title {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.6vw, 1.5rem);
  line-height: 1.2;
  font-weight: 400;
  margin: 0.5rem 0 0.8rem;
  transition: color 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.related-item:hover .rel-title { color: var(--accent); }

@media (max-width: 900px) {
  .article-reading-inner {
    grid-template-columns: 1fr;
  }

  .article-sticky-aside {
    position: static;
    border-bottom: 1px solid var(--border);
    padding-bottom: 2rem;
    margin-bottom: 1rem;
  }

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

@media (max-width: 600px) {
  .related-grid { grid-template-columns: 1fr; }
}

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

@media (max-width: 960px) {
  .nav-center { display: none; }
  .nav-hamburger { display: flex; }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-inner > :first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  html { font-size: 16px; }

  .site-nav { padding: 1.2rem var(--gutter); }

  .footer-inner {
    grid-template-columns: 1fr;
  }

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