/* ============================================================
   alex-field.co.uk — Stylesheet
   Design System: v2 (Editorial Authority)
   Source of truth: DESIGN.md at repo root
   ============================================================ */

/* --- Font Faces (variable, self-hosted) ---
   Bodoni Moda already self-hosted. Instrument Sans + Newsreader
   currently loaded via Google Fonts CDN in base.njk; self-host
   before launch (TODO).
   ============================================================ */

@font-face {
  font-family: 'Bodoni Moda';
  src: url('fonts/BodoniModa-Variable.woff2') format('woff2-variations');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Bodoni Moda';
  src: url('fonts/BodoniModa-Italic-Variable.woff2') format('woff2-variations');
  font-weight: 400 900;
  font-style: italic;
  font-display: swap;
}

/* --- Design Tokens --- */

:root {
  /* Typography */
  --font-display: 'Bodoni Moda', Georgia, 'Times New Roman', serif;
  --font-ui: 'Instrument Sans', system-ui, -apple-system, sans-serif;
  --font-prose: 'Newsreader', Georgia, serif;

  --type-cover:    clamp(3.5rem, 8vw, 6.5rem);
  --type-hero:     clamp(2.75rem, 6vw, 4.5rem);
  --type-h1:       clamp(2rem, 4vw, 2.75rem);
  --type-h2:       1.625rem;
  --type-h3:       1.25rem;
  --type-body:     1.0625rem;
  --type-prose:    1.1875rem;
  --type-small:    0.875rem;
  --type-eyebrow:  0.6875rem;

  /* Spacing (8px grid) */
  --space-2xs: 0.25rem;
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  6rem;
  --space-2xl: 10rem;

  /* Layout */
  --max-content:    1040px;
  --max-prose:      660px;
  --max-narrow-faq: 640px;

  /* Border */
  --radius:   0;
  --hairline: 1px;

  /* Motion */
  --dur-micro:    100ms;
  --dur-short:    180ms;
  --dur-medium:   320ms;
  --dur-long:     480ms;
  --ease:         cubic-bezier(0.2, 0, 0.2, 1);
  --ease-emphasis: cubic-bezier(0.2, 0, 0, 1);
}

/* --- Color Themes --- */

[data-theme="dark"] {
  --bg: #16140f;
  --surface: #1d1a14;
  --surface-2: #252118;
  --text: #f0e9dc;
  --text-secondary: #a09a8c;
  --text-muted: #6a6759;
  --text-deck: #c9a888;
  --border: #2a261e;
  --border-strong: #3a3428;
  --accent: #9c3a14;
  --accent-hover: #b04a1c;
  --accent-soft: rgba(156, 58, 20, 0.12);
  --success: #4a6b3a;
  --warning: #a07a1c;
  --error: #8a2818;
  --info: #3a5070;
}

[data-theme="light"] {
  --bg: #f1ead9;
  --surface: #e7e0cd;
  --surface-2: #dcd4be;
  --text: #1a1610;
  --text-secondary: #58514a;
  --text-muted: #8a8378;
  --text-deck: #6b4a2e;
  --border: #d4ccba;
  --border-strong: #b8b09e;
  --accent: #5c2410;
  --accent-hover: #7a3416;
  --accent-soft: rgba(92, 36, 16, 0.08);
  --success: #4a6b3a;
  --warning: #8a6818;
  --error: #8a2818;
  --info: #3a5070;
}

/* Modern animation: allow height keyword interpolation */
@supports (interpolate-size: allow-keywords) {
  :root { interpolate-size: allow-keywords; }
}

/* --- Reset & Base --- */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--type-body);
  line-height: 1.6;
  transition: background var(--dur-short) var(--ease), color var(--dur-short) var(--ease);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01";
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--bg);
  color: var(--text);
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--accent);
  font-weight: 600;
  z-index: 200;
  transition: top var(--dur-short) var(--ease);
}
.skip-link:focus { top: 0; }

/* --- Site Nav --- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: var(--hairline) solid var(--border);
  /* Homepage starts hidden, slides in once past hero (.visible) */
  transform: translateY(-100%);
  transition: transform var(--dur-short) var(--ease);
}
.site-nav.visible,
.site-nav--always {
  transform: translateY(0);
}
.site-nav__inner {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}
.site-nav__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--text);
  flex-shrink: 0;
}
.site-nav__name .nav-name-short { display: none; }
.site-nav__cluster {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.site-nav__links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}
.site-nav__links a {
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--dur-short) var(--ease), border-color var(--dur-short) var(--ease);
}
.site-nav__links a:hover { color: var(--text); }
.site-nav__links a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* --- Theme Toggle (D/L letter buttons in nav) --- */

.theme-toggle {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}
.theme-btn {
  width: 32px;
  height: 32px;
  background: var(--surface);
  border: var(--hairline) solid var(--border-strong);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: background var(--dur-micro) var(--ease), border-color var(--dur-micro) var(--ease), color var(--dur-micro) var(--ease);
}
.theme-btn:hover { background: var(--surface-2); }
.theme-btn[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}
.theme-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- Layout helpers --- */

.wide   { max-width: var(--max-content);   margin: 0 auto; padding: 0 var(--space-md); }
.narrow { max-width: var(--max-narrow-faq); margin: 0 auto; padding: 0 var(--space-md); }
.prose  { max-width: var(--max-prose);     margin: 0 auto; padding: 0 var(--space-md); }

/* --- Section pattern --- */

section { padding: clamp(4rem, 10vw, var(--space-2xl)) 0; }
.section-divider {
  width: 48px;
  height: var(--hairline);
  background: var(--accent);
  margin-bottom: var(--space-md);
}
.section-label {
  display: block;
  font-family: var(--font-ui);
  font-size: var(--type-eyebrow);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}
.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--type-h1);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-bottom: var(--space-md);
}
.section-intro {
  font-family: var(--font-ui);
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 60ch;
  margin-bottom: var(--space-lg);
}

/* --- Homepage Hero --- */

.hero {
  min-height: calc(100vh - 60px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--space-md);
  gap: var(--space-lg);
}
.hero__left {
  border-right: var(--hairline) solid var(--border);
  padding-right: var(--space-lg);
}
.hero__name {
  font-family: var(--font-display);
  font-size: var(--type-hero);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.025em;
}
.hero__discipline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.25rem;
  color: var(--accent);
  margin-top: var(--space-sm);
}
.hero__right { padding-left: var(--space-md); }
.hero__positioning {
  font-size: 1.25rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}
.hero__cta {
  display: inline-block;
  font-family: var(--font-ui);
  font-weight: 600;
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
  transition: color var(--dur-short) var(--ease), border-color var(--dur-short) var(--ease);
}
.hero__cta:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent-hover);
}
.hero__cta:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
.hero__cta .arrow {
  display: inline-block;
  margin-left: 0.25rem;
  transition: transform var(--dur-short) var(--ease);
}
.hero__cta:hover .arrow { transform: translateX(8px); }

/* --- About --- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}
.about-text p {
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
}
.about-pullquote {
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1.3;
  font-style: italic;
  padding-left: var(--space-md);
  border-left: 2px solid var(--accent);
}

/* --- Testimonials --- */

.testimonials-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.testimonial {
  background: var(--surface);
  padding: var(--space-md);
  border-top: 2px solid var(--border-strong);
}
.testimonial__quote {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-style: italic;
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}
.testimonial__author {
  font-size: var(--type-small);
  color: var(--text-secondary);
  font-style: normal;
}

/* --- Services --- */

.services-list {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-md);
}
.service-item {
  padding-top: var(--space-md);
  border-top: var(--hairline) solid var(--border);
}
.service-item__number {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}
.service-item__name {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}
.service-item__desc {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* --- Timeline (How I Work) --- */

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  height: var(--hairline);
  background: var(--border);
}
.timeline-step { position: relative; }
.timeline-step__dot {
  width: 12px;
  height: 12px;
  background: var(--accent);
  margin-bottom: var(--space-sm);
  position: relative;
  z-index: 1;
}
.timeline-step__title { font-weight: 600; margin-bottom: 0.25rem; }
.timeline-step__desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.5;
}

/* --- Work (logos + case studies) --- */

.logos-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  margin-bottom: var(--space-lg);
  opacity: 0.6;
}
.logo-placeholder {
  width: 140px;
  height: 56px;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}
.case-studies-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* --- FAQ (Accordion) --- */

details.accordion {
  border-bottom: var(--hairline) solid var(--border);
  padding: 0;
}
details.accordion summary {
  font-family: var(--font-display);
  font-size: 1.25rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  transition: color var(--dur-short) var(--ease);
}
details.accordion summary:hover { color: var(--accent); }
details.accordion summary::-webkit-details-marker { display: none; }
details.accordion summary::after {
  content: '+';
  font-family: var(--font-ui);
  font-size: 1.5rem;
  color: var(--accent);
  line-height: 1;
  width: 1rem;
  text-align: center;
  transition: transform var(--dur-short) var(--ease);
  display: inline-block;
}
details.accordion[open] summary::after {
  content: '\2212';
  transform: rotate(180deg);
}
details.accordion::details-content {
  block-size: 0;
  overflow: clip;
  transition: block-size var(--dur-medium) var(--ease), content-visibility var(--dur-medium) allow-discrete;
  content-visibility: hidden;
}
details.accordion[open]::details-content {
  block-size: auto;
  content-visibility: visible;
}
.faq-answer {
  padding: 0 0 var(--space-sm) 0;
  color: var(--text-secondary);
  max-width: 60ch;
}

/* --- Contact / Forms --- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}
.contact-intro {
  font-family: var(--font-display);
  font-size: 1.75rem;
  line-height: 1.4;
  margin-bottom: var(--space-md);
}
.contact-intro span { color: var(--text-secondary); }

/* Field wrapper: animated focus underline */
.field {
  position: relative;
  display: block;
}
.field::after {
  content: '';
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transition: left var(--dur-medium) var(--ease), right var(--dur-medium) var(--ease);
  pointer-events: none;
}
.field:focus-within::after {
  left: 0;
  right: 0;
}

.form-group { margin-bottom: var(--space-sm); }
.form-group label {
  display: block;
  font-family: var(--font-ui);
  font-size: var(--type-small);
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text);
}
.form-group .req { color: var(--accent); }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: var(--hairline) solid var(--border-strong);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 1rem;
  border-radius: var(--radius);
  transition: border-color var(--dur-short) var(--ease), background var(--dur-short) var(--ease);
  display: block;
}
.form-group input:hover:not(:focus),
.form-group textarea:hover:not(:focus),
.form-group select:hover:not(:focus) {
  border-color: var(--text-muted);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--text-muted);
  background: color-mix(in srgb, var(--accent-soft) 50%, var(--bg));
}
.form-group textarea { min-height: 110px; resize: vertical; }
.form-group .error-msg {
  display: none;
  margin-top: 0.375rem;
  font-size: var(--type-small);
  color: var(--error);
}
.form-group.invalid input,
.form-group.invalid textarea,
.form-group.invalid select { border-color: var(--error); }
.form-group.invalid .error-msg { display: block; }

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  padding: 0.375rem 0;
}
.checkbox-row input[type="checkbox"] {
  appearance: none;
  width: 18px; height: 18px;
  border: var(--hairline) solid var(--border-strong);
  background: var(--bg);
  cursor: pointer;
  margin-top: 3px;
  flex-shrink: 0;
  position: relative;
}
.checkbox-row input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}
.checkbox-row input[type="checkbox"]:checked::after {
  content: ''; position: absolute;
  inset: 3px;
  background: var(--bg);
  clip-path: polygon(14% 50%, 0 64%, 40% 100%, 100% 16%, 84% 4%, 38% 70%);
}
.checkbox-row label { font-weight: 400; font-size: 0.9375rem; line-height: 1.5; }

/* --- Buttons --- */

.btn {
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.5rem;
  border: var(--hairline) solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background var(--dur-micro) var(--ease), border-color var(--dur-micro) var(--ease), color var(--dur-micro) var(--ease);
  text-decoration: none;
  display: inline-block;
  border-radius: var(--radius);
}
.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn--secondary { border-color: var(--border-strong); color: var(--text); }
.btn--secondary:hover { border-color: var(--text); }
.btn--ghost { color: var(--text-secondary); }
.btn--ghost:hover { color: var(--text); background: var(--accent-soft); }
.btn--text {
  padding: 0;
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 1px;
}
.btn--text:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent-hover);
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn:disabled, .btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.btn:active:not(:disabled) { transform: translateY(1px); }
.submit-btn {
  background: var(--accent);
  border: var(--hairline) solid var(--accent);
  color: var(--bg);
  padding: 0.875rem 2rem;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--dur-micro) var(--ease);
}
.submit-btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.submit-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.form-status {
  margin-top: var(--space-sm);
  font-size: 0.9375rem;
}
.form-status.success { color: var(--success); }
.form-status.error { color: var(--error); }
.form-status a { color: var(--accent); text-decoration: underline; }

.inline-cta {
  display: inline-block;
  margin-top: var(--space-md);
  font-family: var(--font-ui);
  font-weight: 600;
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
  transition: color var(--dur-short) var(--ease), border-color var(--dur-short) var(--ease);
}
.inline-cta:hover { color: var(--accent-hover); border-bottom-color: var(--accent-hover); }

/* --- Cards (case-study + project) --- */

.case-card {
  background: var(--surface);
  padding: var(--space-md);
  border-top: 2px solid var(--border-strong);
  transition: border-color var(--dur-short) var(--ease), background var(--dur-short) var(--ease), transform var(--dur-short) var(--ease);
}
.case-card:hover { border-top-color: var(--accent); }
.case-card__type { font-weight: 600; margin-bottom: 0.25rem; }
.case-card__result { color: var(--text-secondary); font-size: 1rem; }

/* Generic arrow utility */
.with-arrow .arrow {
  display: inline-block;
  transition: transform var(--dur-short) var(--ease);
}
.with-arrow:hover .arrow { transform: translateX(8px); }

/* --- Cookie Banner --- */

.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--surface);
  border-top: var(--hairline) solid var(--border-strong);
  padding: var(--space-sm) var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--type-small);
  z-index: 100;
}
.cookie-banner.hidden { display: none; }
.cookie-banner__actions { display: flex; gap: var(--space-xs); }
.cookie-btn {
  padding: 0.5rem 1rem;
  border: var(--hairline) solid var(--border-strong);
  background: transparent;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color var(--dur-micro) var(--ease), background var(--dur-micro) var(--ease);
}
.cookie-btn:hover { border-color: var(--text); }
.cookie-btn.accept {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.cookie-btn.accept:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

/* --- Site Footer --- */

.site-footer {
  border-top: var(--hairline) solid var(--border);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  font-size: var(--type-small);
  color: var(--text-secondary);
}

/* ============================================================
   PAGE-SPECIFIC PATTERNS
   ============================================================ */

/* --- Page Header (for /projects/, /field-report/, etc.) --- */

.page-header {
  padding: var(--space-xl) 0 var(--space-lg);
}
.page-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}
.page-intro {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 60ch;
}
.rss-link {
  margin-top: var(--space-md);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--type-small);
  color: var(--text-secondary);
  transition: color var(--dur-short) var(--ease);
}
.rss-link:hover { color: var(--accent); }
.rss-link::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--accent);
}

/* --- Projects Index --- */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 480px), 1fr));
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
}
.project {
  display: block;
  position: relative;
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur-short) var(--ease);
}
.project:hover { transform: translateY(-4px); }
.project__visual {
  aspect-ratio: 16 / 9;
  background: var(--surface);
  margin-bottom: var(--space-md);
  position: relative;
  overflow: hidden;
  border: var(--hairline) solid var(--border);
}
/* PLACEHOLDER treatments — replace with real images before launch */
.project__visual--smoke {
  background:
    radial-gradient(circle at 30% 40%, var(--accent-soft), transparent 55%),
    radial-gradient(circle at 75% 70%, var(--accent-soft), transparent 55%),
    var(--surface);
}
.project__visual--eric {
  background:
    linear-gradient(135deg, var(--surface), color-mix(in srgb, var(--accent-soft) 60%, var(--surface)));
}
.project__eyebrow {
  font-family: var(--font-ui);
  font-size: var(--type-eyebrow);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.project__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.875rem;
  line-height: 1.15;
  margin-bottom: 0.5rem;
}
.project__desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.55;
  margin-bottom: var(--space-sm);
}
.project__link {
  font-family: var(--font-ui);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9375rem;
  border-bottom: var(--hairline) solid transparent;
  transition: border-color var(--dur-short) var(--ease);
}
.project:hover .project__link { border-bottom-color: var(--accent); }
.project__link .arrow {
  display: inline-block;
  transition: transform var(--dur-short) var(--ease);
}
.project:hover .arrow { transform: translateX(6px); }

/* --- Field Report Index --- */

.featured-post {
  display: block;
  text-decoration: none;
  color: inherit;
  padding: var(--space-md) 0 var(--space-lg);
  border-top: var(--hairline) solid var(--border);
  border-bottom: var(--hairline) solid var(--border);
  margin-bottom: var(--space-lg);
  transition: transform var(--dur-short) var(--ease);
}
.featured-post:hover { transform: translateY(-2px); }
.featured-post__image {
  aspect-ratio: 21 / 9;
  margin-bottom: var(--space-md);
  background: var(--surface);
  position: relative;
  overflow: hidden;
}
.featured-post__inner {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: var(--space-md);
  align-items: baseline;
}
.featured-post__date {
  font-family: var(--font-ui);
  font-size: var(--type-small);
  color: var(--text-secondary);
  font-feature-settings: "tnum";
  letter-spacing: 0.02em;
}
.featured-post__main h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.25rem;
  line-height: 1.15;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
  color: var(--text);
  transition: color var(--dur-short) var(--ease);
}
.featured-post:hover .featured-post__main h2 { color: var(--accent); }
.featured-post__excerpt {
  color: var(--text-secondary);
  font-size: 1.125rem;
  line-height: 1.5;
  max-width: 60ch;
}
.featured-post__tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: var(--type-eyebrow);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
  padding: 0.2rem 0.5rem;
  border: var(--hairline) solid var(--accent);
}

.post-list { padding-bottom: var(--space-xl); }
.post-row {
  display: grid;
  grid-template-columns: 160px 100px 1fr auto;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: var(--hairline) solid var(--border);
  text-decoration: none;
  color: inherit;
  align-items: center;
  transition: padding-left var(--dur-short) var(--ease);
}
.post-row:hover { padding-left: var(--space-xs); }
.post-row__thumb {
  aspect-ratio: 16 / 10;
  background: var(--surface);
  border: var(--hairline) solid var(--border);
}
.post-row__date {
  font-family: var(--font-ui);
  font-feature-settings: "tnum";
  font-size: var(--type-small);
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  align-self: center;
}
.post-row__main h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.2;
  margin-bottom: 0.375rem;
  transition: color var(--dur-short) var(--ease);
}
.post-row:hover .post-row__main h2 { color: var(--accent); }
.post-row__excerpt {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.5;
  max-width: 56ch;
}
.post-row__meta {
  font-family: var(--font-ui);
  font-feature-settings: "tnum";
  font-size: var(--type-small);
  color: var(--text-secondary);
  white-space: nowrap;
}
.post-row__meta .arrow {
  display: inline-block;
  color: var(--accent);
  margin-left: 0.5rem;
  transition: transform var(--dur-short) var(--ease);
}
.post-row:hover .arrow { transform: translateX(4px); }

/* --- Field Report Post --- */

.post-header { padding: var(--space-xl) 0 var(--space-md); }
.post-back {
  font-family: var(--font-ui);
  font-size: var(--type-small);
  color: var(--text-secondary);
  display: inline-block;
  margin-bottom: var(--space-md);
  transition: color var(--dur-short) var(--ease);
}
.post-back:hover { color: var(--accent); }
.post-back::before { content: '\2190'; margin-right: 0.5rem; }
.post-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}
.post-subhead {
  font-family: var(--font-prose);
  font-style: italic;
  font-weight: 400;
  font-size: 1.375rem;
  line-height: 1.45;
  color: var(--text-deck);
  margin-bottom: var(--space-md);
}
.post-meta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  font-family: var(--font-ui);
  font-size: var(--type-small);
  color: var(--text-secondary);
  padding-bottom: var(--space-md);
  font-feature-settings: "tnum";
}
.post-meta__dot {
  display: inline-block;
  width: 4px; height: 4px;
  background: var(--text-secondary);
  border-radius: 50%;
  margin: 0 0.5rem;
  vertical-align: middle;
}
.post-feature {
  aspect-ratio: 21 / 9;
  background: var(--surface);
  margin-bottom: 0.5rem;
  position: relative;
}
.post-feature-caption {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  color: var(--text-deck);
  font-style: italic;
  margin-top: 0.5rem;
  padding-bottom: var(--space-md);
  border-bottom: var(--hairline) solid var(--border);
}
.post-body {
  padding: var(--space-lg) 0;
  font-family: var(--font-prose);
  font-size: var(--type-prose);
  line-height: 1.7;
}
.post-body p { margin-bottom: 1.5em; }
.post-body p:first-of-type::first-line {
  font-weight: 600;
  letter-spacing: 0.01em;
}
.post-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.75rem;
  line-height: 1.25;
  margin: var(--space-lg) 0 var(--space-sm);
}
.post-body h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1.3;
  margin: var(--space-md) 0 var(--space-xs);
}
.post-body blockquote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  line-height: 1.4;
  padding-left: var(--space-md);
  border-left: 2px solid var(--accent);
  margin: var(--space-md) 0;
  color: var(--text);
}
.post-body ul, .post-body ol {
  margin-bottom: 1.5em;
  padding-left: 1.5rem;
}
.post-body li { margin-bottom: 0.5rem; }
.post-body strong { font-weight: 600; }
.post-body em { font-style: italic; }
.post-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur-short) var(--ease);
}
.post-body a:hover { color: var(--accent-hover); }

.related-service {
  margin-top: var(--space-xl);
  padding: var(--space-md);
  background: var(--surface);
  border-top: 2px solid var(--border-strong);
  transition: border-color var(--dur-short) var(--ease);
}
.related-service:hover { border-top-color: var(--accent); }
.related-service__label {
  font-family: var(--font-ui);
  font-size: var(--type-eyebrow);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}
.related-service__text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.4;
  margin-bottom: var(--space-xs);
}
.related-service__link {
  font-family: var(--font-ui);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9375rem;
}
.related-service__link:hover { text-decoration: underline; }

.post-footer {
  margin-top: var(--space-xl);
  padding: var(--space-lg) 0;
  border-top: var(--hairline) solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.post-footer__back {
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color var(--dur-short) var(--ease);
}
.post-footer__back:hover { color: var(--accent); }
.post-footer__back::before { content: '\2190'; margin-right: 0.5rem; }
.post-footer__cta {
  font-family: var(--font-ui);
  color: var(--accent);
  font-weight: 600;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
  transition: color var(--dur-short) var(--ease), border-color var(--dur-short) var(--ease);
}
.post-footer__cta:hover { color: var(--accent-hover); border-bottom-color: var(--accent-hover); }
.post-footer__cta .arrow {
  display: inline-block;
  transition: transform var(--dur-short) var(--ease);
}
.post-footer__cta:hover .arrow { transform: translateX(6px); }

/* --- Project detail page --- */

.project-detail-header { padding: var(--space-xl) 0 var(--space-md); }
.project-detail-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}
.project-detail-tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.375rem;
  color: var(--text-deck);
  margin-bottom: var(--space-md);
}
.project-detail-hero {
  aspect-ratio: 21 / 9;
  background: var(--surface);
  margin-bottom: var(--space-lg);
  border: var(--hairline) solid var(--border);
}
.project-detail-body {
  font-family: var(--font-prose);
  font-size: var(--type-prose);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}
.project-detail-body p { margin-bottom: 1.25em; }
.project-detail-outlink {
  font-family: var(--font-ui);
  font-weight: 600;
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
  display: inline-block;
  transition: color var(--dur-short) var(--ease), border-color var(--dur-short) var(--ease);
}
.project-detail-outlink:hover { color: var(--accent-hover); border-bottom-color: var(--accent-hover); }
.project-detail-outlink .arrow { display: inline-block; transition: transform var(--dur-short) var(--ease); }
.project-detail-outlink:hover .arrow { transform: translateX(6px); }

/* --- Client onboarding (/clients/[slug]/) --- */

.client-nav {
  border-bottom: var(--hairline) solid var(--border);
  padding: var(--space-sm) var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.client-nav__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
}
.client-nav__private {
  font-family: var(--font-ui);
  font-size: var(--type-eyebrow);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.client-nav__private::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--accent);
  margin-right: 0.5rem;
  vertical-align: middle;
}

.client-hero { padding: var(--space-xl) 0 var(--space-lg); }
.client-greeting {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}
.client-greeting em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.client-intro {
  font-family: var(--font-ui);
  font-size: 1.25rem;
  line-height: 1.55;
  color: var(--text-secondary);
  max-width: 56ch;
}

.recap {
  background: var(--surface);
  padding: var(--space-md);
  margin: var(--space-lg) 0;
  border-top: 2px solid var(--border-strong);
}
.recap__heading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}
.recap__list { list-style: none; }
.recap__list > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-md);
  padding: 0.75rem 0;
  border-bottom: var(--hairline) solid var(--border);
  align-items: baseline;
}
.recap__list > div:last-child { border-bottom: none; }
.recap__list dt {
  font-family: var(--font-ui);
  font-size: var(--type-eyebrow);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.recap__list dd { font-size: 1rem; line-height: 1.5; }

.next-steps { margin: var(--space-lg) 0; }
.next-steps__heading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}
.next-steps__list {
  list-style: none;
  counter-reset: step;
}
.next-steps__list > li {
  counter-increment: step;
  padding: var(--space-sm) 0 var(--space-sm) 3rem;
  position: relative;
  border-bottom: var(--hairline) solid var(--border);
}
.next-steps__list > li:last-child { border-bottom: none; }
.next-steps__list > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0; top: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  font-feature-settings: "tnum";
}
.next-steps__list strong { display: block; margin-bottom: 0.25rem; font-weight: 600; }
.next-steps__list span { color: var(--text-secondary); font-size: 0.9375rem; }

.intake-form-section { margin: var(--space-lg) 0 var(--space-xl); }
.intake-form-section h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.75rem;
  margin-bottom: var(--space-xs);
}
.intake-form-section .intro {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  max-width: 60ch;
}

fieldset.fieldset {
  border: var(--hairline) solid var(--border);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}
fieldset.fieldset legend {
  font-family: var(--font-ui);
  font-size: var(--type-eyebrow);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0 0.5rem;
  margin-left: -0.5rem;
}
fieldset.fieldset .hint {
  font-size: var(--type-small);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.client-footer {
  border-top: var(--hairline) solid var(--border);
  padding: var(--space-lg) var(--space-md);
  font-size: var(--type-small);
  color: var(--text-secondary);
}
.client-footer__grid {
  max-width: var(--max-content);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.client-footer strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.25rem;
  font-weight: 600;
}
.client-footer a {
  color: var(--accent);
  transition: color var(--dur-short) var(--ease);
}
.client-footer a:hover { color: var(--accent-hover); }

/* --- Scroll fade-in (via IntersectionObserver) --- */

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--dur-medium) var(--ease), transform var(--dur-medium) var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Print --- */

@media print {
  .site-nav, .theme-toggle, .cookie-banner, .contact-form,
  .post-feature, .post-row__thumb, .featured-post__image,
  .project__visual, .project-detail-hero { display: none; }
  body { background: #fff; color: #000; }
  a { text-decoration: underline; }
  section { page-break-inside: avoid; }
}

/* --- Reduced Motion --- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
  html { scroll-behavior: auto; }
  .fade-in { opacity: 1; transform: none; }
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   Mobile-first: defaults are mobile.
   Tablet: 720-1023px. Desktop: 1024px+.
   ============================================================ */

/* Mobile defaults (< 720px) */
@media (max-width: 719px) {
  .site-nav {
    /* Always visible on mobile — vertical real estate is precious */
    transform: translateY(0);
  }
  .site-nav__inner {
    padding: 0.75rem var(--space-sm);
    gap: var(--space-sm);
  }
  .site-nav__name .nav-name-full { display: none; }
  .site-nav__name .nav-name-short { display: inline; }
  .site-nav__links {
    gap: var(--space-sm);
    font-size: var(--type-small);
    overflow-x: auto;
    flex-wrap: nowrap;
    scrollbar-width: none;
  }
  .site-nav__links::-webkit-scrollbar { display: none; }
  .site-nav__links a { white-space: nowrap; }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: var(--space-xl);
    padding-bottom: var(--space-lg);
    gap: var(--space-md);
  }
  .hero__left {
    border-right: none;
    border-bottom: var(--hairline) solid var(--border);
    padding-right: 0;
    padding-bottom: var(--space-md);
  }
  .hero__right { padding-left: 0; }

  .about-grid, .testimonials-row, .case-studies-grid, .contact-grid,
  .featured-post__inner, .client-footer__grid, .form-row { grid-template-columns: 1fr; }

  .services-list { grid-template-columns: 1fr; }
  .services-list .service-item { padding-top: var(--space-sm); }

  .timeline { grid-template-columns: 1fr; }
  .timeline::before { display: none; }
  .timeline-step { padding-left: 1.5rem; position: relative; }
  .timeline-step__dot { position: absolute; left: 0; top: 6px; }

  section { padding: clamp(3rem, 8vw, 4rem) 0; }
  .page-header { padding: var(--space-lg) 0 var(--space-md); }

  .post-row {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
    padding: var(--space-md) 0;
  }
  .post-row__thumb { aspect-ratio: 16 / 9; margin-bottom: var(--space-xs); }
  .post-row__date { order: -1; font-size: 0.8125rem; }
  .post-row__meta { font-size: 0.75rem; }

  .featured-post__main h2 { font-size: 1.75rem; }
  .featured-post__image { aspect-ratio: 16 / 9; }

  .recap__list > div { grid-template-columns: 1fr; gap: 0.25rem; }

  .cookie-banner {
    flex-direction: column;
    gap: var(--space-xs);
    align-items: stretch;
    text-align: center;
  }
}

/* Tablet (720-1023px) */
@media (min-width: 720px) and (max-width: 1023px) {
  .services-list { grid-template-columns: 1fr 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
  .timeline::before { display: none; }
  .post-row { grid-template-columns: 140px 1fr auto; }
  .post-row__date {
    grid-column: 2;
    order: -1;
    margin-bottom: 0.25rem;
  }
  section { padding: clamp(4rem, 8vw, 6rem) 0; }
}