/* ============================================================
   barrettahern.com — Main Stylesheet
   Brand: Barrett Ahern v1.0 — April 2026
   ============================================================
   Structure:
   1. CSS Variables (colours, fonts, spacing)
   2. Reset & Base
   3. Layout Utilities
   4. Navigation
   5. Hero / Page Header
   6. Sections (Services, Logos, Testimonial, etc.)
   7. Cards (Case Studies)
   8. Publications List
   9. Speaking Events
   10. Clients (logo wall + featured)
   11. Footer / Contact
   12. Responsive (mobile breakpoints)
   13. Dark Mode
   ============================================================ */


/* ----------------------------------------------------------
   1. CSS Variables
   ---------------------------------------------------------- */
:root {
  /* Brand Palette */
  --color-bg:           #FAFAF8;
  --color-off-white:    #F4F3EF;
  --color-paper:        #EDECEA;
  --color-rule:         #E0DED9;
  --color-muted:        #B8B5AE;
  --color-mid:          #787470;
  --color-ink:          #1C1B19;
  --color-accent-warm:  #BF5B1E;
  --color-accent-cool:  #5E6B38;

  /* Semantic aliases (for backward-compatible class references) */
  --color-text:         #1C1B19;
  --color-text-muted:   #787470;
  --color-border:       #E0DED9;
  --color-nav-bg:       #1C1B19;
  --color-nav-text:     #FAFAF8;
  --color-accent:       #1C1B19;
  --color-card-bg:      #F4F3EF;

  /* Typography */
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;
  --font-mono:  'DM Mono', monospace;

  --font-size-xs:   0.75rem;   /* 12px */
  --font-size-sm:   0.875rem;  /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg:   1.125rem;  /* 18px */
  --font-size-xl:   1.25rem;   /* 20px */
  --font-size-2xl:  1.5rem;    /* 24px */
  --font-size-3xl:  2rem;      /* 32px */
  --font-size-4xl:  2.75rem;   /* 44px */

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --max-width: 1100px;
  --nav-height: 52px;
}


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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

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

ul {
  list-style: none;
}


/* ----------------------------------------------------------
   3. Layout Utilities
   ---------------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-20) 0;
}

.section--tight {
  padding: var(--space-12) 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin-bottom: var(--space-8);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-mid);
  margin-bottom: var(--space-3);
}


/* ----------------------------------------------------------
   4. Navigation
   ---------------------------------------------------------- */
.nav {
  background: rgba(250,250,248,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-rule);
  height: var(--nav-height);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--color-ink);
}

.nav__logo:hover {
  text-decoration: none;
  opacity: 0.7;
}

.nav__links {
  display: flex;
  gap: var(--space-8);
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-mid);
  transition: color 0.15s;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-ink);
  text-decoration: none;
}

/* Hamburger (mobile only) */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.2s;
}


/* ----------------------------------------------------------
   5. Hero / Page Header
   ---------------------------------------------------------- */
.hero {
  padding: var(--space-20) 0 var(--space-16);
  border-bottom: 1px solid var(--color-border);
}

.hero__grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: var(--space-16);
  align-items: center;
}

.hero__heading {
  font-family: var(--font-serif);
  font-size: var(--font-size-4xl);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

.hero__heading em {
  font-style: italic;
  color: var(--color-mid);
}

.hero__body {
  font-size: var(--font-size-lg);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  border-left: 2px solid var(--color-rule);
  padding-left: var(--space-3);
  text-wrap: pretty;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: 3px;
  transition: border-color 0.15s;
}

.hero__cta:hover {
  border-color: var(--color-ink);
  text-decoration: none;
}

.hero__image {
  display: flex;
  justify-content: flex-end;
}

/* Mobile image hidden by default; desktop image always shown */
.hero__image--mobile {
  display: none;
}

.hero__image img {
  width: 340px;
  height: 340px;
  object-fit: cover;
  border-radius: 3px;
  border: 1px solid var(--color-rule);
}

/* Inner page header (about, work, etc.) */
.page-header {
  padding: var(--space-16) 0 var(--space-12);
  border-bottom: 1px solid var(--color-border);
}

.page-header__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-4xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: var(--space-4);
}

.page-header__subtitle {
  font-size: var(--font-size-lg);
  font-weight: 300;
  color: var(--color-text-muted);
}


/* ----------------------------------------------------------
   6. Sections
   ---------------------------------------------------------- */

/* Services */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.service-card {
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: 3px;
}

.service-card__icon {
  display: block;
  color: var(--color-accent-warm);
  margin-bottom: var(--space-4);
}

.service-card__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--space-3);
}

.service-card__body {
  font-size: var(--font-size-sm);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Client Logo Marquee */
.logos {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.logos__track-wrapper {
  overflow: hidden;
}

.logos__track {
  display: flex;
  gap: var(--space-12);
  align-items: center;
  animation: marquee 30s linear infinite;
  width: max-content;
}

.logos__track:hover {
  animation-play-state: paused;
}

.logos__track img {
  height: 28px;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.45;
  transition: opacity 0.2s, filter 0.2s;
  flex-shrink: 0;
}

.logos__track img:hover {
  filter: grayscale(0%);
  opacity: 1;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Testimonial */
.testimonial {
  background: var(--color-off-white);
  border: 1px solid var(--color-rule);
  border-radius: 3px;
  padding: var(--space-12);
  position: relative;
}

.testimonial__quote {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  line-height: 1.55;
  font-weight: 400;
  font-style: italic;
  color: var(--color-ink);
  text-align: justify;
}

.testimonial__quote::before {
  content: '\201C';
  font-size: 4rem;
  line-height: 0;
  vertical-align: -1.5rem;
  color: var(--color-rule);
  margin-right: var(--space-2);
}

.testimonial__quote::after {
  content: '\201D';
  font-size: 4rem;
  line-height: 0;
  vertical-align: -1.5rem;
  color: var(--color-rule);
  margin-left: var(--space-1);
}

/* About page bio */
.bio__body {
  font-size: var(--font-size-lg);
  font-weight: 300;
  line-height: 1.8;
  max-width: 720px;
}

.bio__body p + p {
  margin-top: var(--space-6);
}

.bio__body a {
  color: var(--color-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--color-rule);
}

.bio__body a:hover {
  text-decoration-color: var(--color-ink);
}

.bio__skills {
  margin-top: var(--space-12);
}

.bio__skills h3 {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-4);
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.skills-list li {
  padding: var(--space-3) var(--space-4);
  background: var(--color-off-white);
  border-radius: 3px;
  font-size: var(--font-size-sm);
  font-weight: 300;
  border-left: 2px solid var(--color-rule);
  max-width: 560px;
  color: var(--color-mid);
}


/* ----------------------------------------------------------
   7. Cards (brand guidelines content card — text only)
   Used on homepage for publications + speaking previews.
   Publications and speaking pages use their own list styles.
   ---------------------------------------------------------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.card {
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: var(--space-6);
  background: var(--color-bg);
  transition: border-color 0.2s;
  display: flex;
  flex-direction: column;
  color: inherit;
}

.card:hover {
  border-color: var(--color-mid);
  text-decoration: none;
}

.card__image {
  display: block;
  width: calc(100% + calc(2 * var(--space-6)));
  margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-5);
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 2px 2px 0 0;
}

.card__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

.card__desc {
  font-size: var(--font-size-sm);
  font-weight: 300;
  color: var(--color-mid);
  line-height: 1.65;
  flex: 1;
  margin-bottom: var(--space-4);
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-rule);
}

.card__date {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.card__read {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink);
}

/* Recent publications + speaking grid (homepage) */
.recent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}


/* ----------------------------------------------------------
   8. Publications List
   ---------------------------------------------------------- */

.publications-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.pub-item {
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-border);
}

.pub-item__content {
  flex: 1;
  min-width: 0;
}

.pub-item__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: var(--space-2);
}

.pub-item__byline {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-3);
}

.pub-item__avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.pub-item__author,
.pub-item__publisher,
.pub-item__date,
.pub-item__byline-sep {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.pub-item__byline-sep {
  opacity: 0.4;
}

.pub-item__title a {
  color: var(--color-ink);
  text-decoration: none;
  transition: opacity 0.15s;
}

.pub-item__title a:hover {
  opacity: 0.65;
  text-decoration: none;
}

.pub-item__desc {
  font-size: var(--font-size-sm);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-3);
}

.pub-item__link {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink);
  text-decoration: none;
}

.pub-item__link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.pub-item__image {
  flex: 0 0 30%;
  max-width: 30%;
  width: 100%;
  height: auto;
  border-radius: 3px;
  display: block;
}


/* ----------------------------------------------------------
   9. Speaking Events
   ---------------------------------------------------------- */

.speaking-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.event-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--space-8);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}

.event-item:last-child {
  border-bottom: none;
}

.event-item__meta {
  padding-top: 4px;
}

.event-item__date {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  display: block;
  margin-bottom: var(--space-2);
}

.event-item__location {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.event-item__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: var(--space-3);
}

.event-item__title a {
  color: var(--color-ink);
  text-decoration: none;
  transition: opacity 0.15s;
}

.event-item__title a:hover {
  opacity: 0.65;
}

.event-item__organizer {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-3);
}

.event-item__desc {
  font-size: var(--font-size-sm);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}

.event-item__link {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink);
  text-decoration: none;
}

.event-item__link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.event-item__body {
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
  margin-top: var(--space-2);
}

.event-item__text {
  flex: 1;
  min-width: 0;
}

.event-item__image {
  flex: 0 0 25%;
  max-width: 25%;
  border-radius: 3px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--color-off-white);
}


/* ----------------------------------------------------------
   10. Clients (logo wall + featured)
   ---------------------------------------------------------- */

/* A) Featured clients */
.clients-featured {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.client-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-8);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}

.client-item__logo-wrap {
  display: flex;
  align-items: center;
  padding-top: 4px;
}

.client-item__logo {
  max-height: 36px;
  max-width: 120px;
  width: auto;
  filter: grayscale(100%) brightness(0.4);
  opacity: 1;
}

.client-item__name {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  font-weight: 400;
  margin-bottom: var(--space-1);
}

.client-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.client-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-mid);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 3px 7px;
}

.client-tag svg {
  flex-shrink: 0;
  color: var(--color-accent-warm);
}

.client-item__desc {
  font-size: var(--font-size-sm);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.client-item__link {
  display: inline-block;
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-ink);
}

.client-item__link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* B) Logo wall — all other clients */
.clients-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-6);
  padding: var(--space-8) 0;
}

.clients-wall__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  transition: border-color 0.2s;
}

.clients-wall__item:hover {
  border-color: var(--color-mid);
}

.clients-wall__logo {
  max-height: 28px;
  max-width: 100px;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.45;
  transition: filter 0.2s, opacity 0.2s;
}

.clients-wall__item:hover .clients-wall__logo {
  filter: grayscale(0%);
  opacity: 1;
}

/* C) Logo wall — unified 10-column grid, all items span 2 cols → 5 per row.
   Default state: logo visible.
   Hover state:   logo fades out, client name fades in.
*/

.logo-wall {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: var(--space-4);
}

.logo-wall__item {
  grid-column: span 2;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  overflow: hidden;
  padding: var(--space-6) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  transition: border-color 0.2s;
  cursor: default;
  text-decoration: none;
  color: inherit;
}

a.logo-wall__item {
  cursor: pointer;
}

.logo-wall__item:hover {
  border-color: var(--color-mid);
}

/* Logo — visible by default, fades out on hover */
.logo-wall__logo {
  max-height: 36px;
  max-width: 100%;
  width: auto;
  filter: grayscale(100%) brightness(0.4);
  opacity: 1;
  transition: opacity 0.2s;
  position: relative;
  z-index: 1;
}

.logo-wall__item:hover .logo-wall__logo {
  opacity: 0;
}

/* Client name — hidden by default, fades in on hover */
.logo-wall__fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  color: var(--color-ink);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.logo-wall__item:hover .logo-wall__fallback {
  opacity: 1;
}

/* When image fails — show name permanently, skip hover-only rule */
.logo-wall__item--no-logo .logo-wall__logo {
  visibility: hidden;
}

.logo-wall__item--no-logo .logo-wall__fallback {
  opacity: 0.55;
}

.logo-wall__item--no-logo:hover .logo-wall__fallback {
  opacity: 1;
}

/* Responsive */
@media (max-width: 900px) {
  .logo-wall {
    gap: var(--space-3);
  }
}

@media (max-width: 580px) {
  /* 6-col grid, span 2 each → 3 per row on mobile; 9 visible = clean 3×3 */
  .logo-wall {
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-2);
  }

  .logo-wall__item--hide-mobile {
    display: none;
  }

  .logo-wall__item {
    padding: var(--space-4) var(--space-2);
  }

  .logo-wall__logo {
    max-height: 24px;
  }
}


/* ----------------------------------------------------------
   11. Footer / Contact
   ---------------------------------------------------------- */
.footer {
  background: var(--color-ink);
  color: var(--color-bg);
  padding: var(--space-16) 0;
}

.footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-12);
}

.footer__heading {
  font-family: var(--font-serif);
  font-size: var(--font-size-2xl);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
  color: #FAFAF8;
}

.footer__email {
  font-size: var(--font-size-base);
  font-weight: 300;
  color: rgba(250,250,248,0.65);
  transition: color 0.15s;
}

.footer__email:hover {
  color: #FAFAF8;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer__links {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-6);
  align-items: center;
  align-self: center;
}

.footer__links a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(250,250,248,0.45);
  transition: color 0.15s;
}

.footer__links a:hover {
  color: #FAFAF8;
  text-decoration: none;
}

.footer__copy {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.25);
}


/* ----------------------------------------------------------
   12. Responsive
   ---------------------------------------------------------- */

/* Tablet */
@media (max-width: 900px) {
  :root {
    --font-size-4xl: 2.25rem;
  }

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

  /* Hide the desktop right-column image; show the inline mobile one */
  .hero__image--desktop {
    display: none;
  }

  .hero__image--mobile {
    display: flex;
    justify-content: center;
    margin: var(--space-6) 0;
  }

  .hero__image img {
    width: 200px;
    height: 200px;
  }

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

  .cards-grid,
  .recent-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer__inner {
    flex-direction: column;
    gap: var(--space-8);
  }

  .footer__links {
    gap: var(--space-4);
  }
}

/* Tablet — publications / speaking / clients */
@media (max-width: 900px) {
  .event-item,
  .client-item {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .event-item__meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
  }

  /* On tablet the body stays side-by-side */
  .event-item__image {
    flex: 0 0 25%;
    max-width: 25%;
  }
}

/* Mobile — event + publication images stack below text */
@media (max-width: 580px) {
  .pub-item {
    flex-direction: column;
  }

  .pub-item__image {
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    height: auto;
  }

  .event-item__body {
    flex-direction: column;
  }

  .event-item__image {
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16 / 9;
  }
}

/* Mobile */
@media (max-width: 580px) {
  :root {
    --font-size-4xl: 1.875rem;
  }

  .hero {
    padding: 2.5rem 0 var(--space-8);
  }

  .page-header {
    padding: var(--space-8) 0 var(--space-6);
  }

  .nav__links {
    display: none;
    flex-direction: column;
    gap: var(--space-4);
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(250,250,248,0.98);
    border-bottom: 1px solid var(--color-rule);
    padding: var(--space-6);
  }

  .nav__links.open {
    display: flex;
  }

  .nav__toggle {
    display: flex;
  }

  .services__grid,
  .cards-grid,
  .recent-grid {
    grid-template-columns: 1fr;
  }

  .testimonial {
    padding: var(--space-8);
  }

  .testimonial__quote {
    font-size: var(--font-size-lg);
  }

  .section {
    padding: var(--space-12) 0;
  }
}


/* ----------------------------------------------------------
   13. Dark Mode
   Remaps all tokens when OS is in dark mode.
   Never use light-palette greys on dark — they disappear.
   ---------------------------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:          #1C1B19;
    --color-off-white:   #242320;
    --color-paper:       #2C2B28;
    --color-rule:        rgba(255,255,255,0.10);
    --color-muted:       rgba(255,255,255,0.35);
    --color-mid:         rgba(255,255,255,0.60);
    --color-ink:         #F4F3EF;
    --color-text:        #F4F3EF;
    --color-text-muted:  rgba(255,255,255,0.60);
    --color-border:      rgba(255,255,255,0.10);
    --color-card-bg:     #242320;
  }

  .nav {
    background: rgba(28,27,25,0.92);
    border-bottom-color: rgba(255,255,255,0.10);
  }

  .nav__toggle span {
    background: #F4F3EF;
  }

  /* Mobile nav dropdown on dark */
  @media (max-width: 580px) {
    .nav__links {
      background: rgba(28,27,25,0.98);
      border-bottom-color: rgba(255,255,255,0.10);
    }
  }

  .hero__image img {
    border-color: rgba(255,255,255,0.10);
    filter: brightness(0.9);
  }

  .testimonial {
    background: #242320;
    border-color: rgba(255,255,255,0.10);
  }

  .service-card {
    border-color: rgba(255,255,255,0.10);
  }

  .card {
    border-color: rgba(255,255,255,0.10);
  }

  .card:hover {
    border-color: rgba(255,255,255,0.35);
  }

  .logo-wall__item {
    border-color: rgba(255,255,255,0.10);
  }

  .logo-wall__item:hover {
    border-color: rgba(255,255,255,0.35);
  }

  /* Logos: brightness(0) collapses all logo pixels to black,
     invert(1) flips them to white — alpha untouched.
     Mirrors light-mode brightness(0.4) but in reverse. */
  .logo-wall__logo {
    filter: brightness(0) invert(1);
    opacity: 0.65;
  }

  .logo-wall__fallback {
    color: #F4F3EF;
  }

  .logos__track img {
    filter: brightness(0) invert(1);
    opacity: 0.50;
  }

  .logos__track img:hover {
    filter: brightness(0) invert(1);
    opacity: 1;
  }

  .client-item__logo {
    filter: brightness(0) invert(1);
    opacity: 0.70;
  }

  /* clients-wall (clients page grid) */
  .clients-wall__logo {
    filter: brightness(0) invert(1);
    opacity: 0.55;
  }

  .clients-wall__item:hover .clients-wall__logo {
    filter: brightness(0) invert(1);
    opacity: 1;
  }

  /* Logos with light backgrounds baked into the file (e.g. Haynes):
     use invert(1) alone — inverts the bg dark, text becomes white */
  .logo-wall__logo--light-bg {
    filter: invert(1);
    opacity: 0.80;
  }

  .skills-list li {
    background: #242320;
    border-left-color: rgba(255,255,255,0.15);
  }

  .footer {
    background: #0E0E0C;
  }

  .footer__copy {
    border-top-color: rgba(255,255,255,0.08);
  }
}