/* ============================================================
   JACK FRENCH — jackfrench.ai
   Design: Bold editorial minimalism (Mammoth Brands-inspired)
   Palette: Slate canvas, warm cream text, electric blue accent
   Fonts: Clash Display (display) + Satoshi (body)
   ============================================================ */

/* ── Tokens ── */
:root {
  /* Type scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3.5rem, 1rem + 9vw, 11rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1280px;

  /* Fonts */
  --font-display: 'Clash Display', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
}

/* Light mode */
:root, [data-theme='light'] {
  --color-bg: #f2f1ee;
  --color-surface: #f5f4f0;
  --color-surface-2: #f8f7f4;
  --color-surface-offset: #eae9e4;
  --color-divider: #d8d6d0;
  --color-border: #cac8c2;

  --color-text: #1a1917;
  --color-text-muted: #6b6a66;
  --color-text-faint: #b0afa9;
  --color-text-inverse: #f2f1ee;

  /* Electric blue accent — curiosity, technology, intelligence */
  --color-primary: #1a3ff0;
  --color-primary-hover: #1230c8;
  --color-primary-active: #0d22a0;
  --color-primary-highlight: #c8d0f8;

  --shadow-sm: 0 1px 2px oklch(0.15 0.01 80 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.15 0.01 80 / 0.09);
  --shadow-lg: 0 12px 32px oklch(0.15 0.01 80 / 0.14);
}

/* Dark mode */
[data-theme='dark'] {
  --color-bg: #131210;
  --color-surface: #181714;
  --color-surface-2: #1d1c19;
  --color-surface-offset: #1a1917;
  --color-divider: #242220;
  --color-border: #35332f;

  --color-text: #e8e6e3;
  --color-text-muted: #7a7874;
  --color-text-faint: #4e4c48;
  --color-text-inverse: #131210;

  --color-primary: #5577f4;
  --color-primary-hover: #7892f8;
  --color-primary-active: #9aaefb;
  --color-primary-highlight: #1e2a5c;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.25);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #131210;
    --color-surface: #181714;
    --color-surface-2: #1d1c19;
    --color-surface-offset: #1a1917;
    --color-divider: #242220;
    --color-border: #35332f;
    --color-text: #e8e6e3;
    --color-text-muted: #7a7874;
    --color-text-faint: #4e4c48;
    --color-text-inverse: #131210;
    --color-primary: #5577f4;
    --color-primary-hover: #7892f8;
    --color-primary-active: #9aaefb;
    --color-primary-highlight: #1e2a5c;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.25);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.35);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);
  }
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-8);
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid color-mix(in oklab, var(--color-border) 60%, transparent);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.nav--hidden {
  transform: translateY(-100%);
}

.nav--scrolled {
  box-shadow: var(--shadow-sm);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.nav__logo-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav__links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color var(--transition-interactive);
}

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

.nav__controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* ── Section nav dots (right rail) ── */
.section-nav {
  position: fixed;
  right: var(--space-8);
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  list-style: none;
}

.section-nav__item a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-faint);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition-interactive);
  justify-content: flex-end;
}

.section-nav__item a:hover,
.section-nav__item.active a {
  color: var(--color-text);
}

.section-nav__dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: currentColor;
  flex-shrink: 0;
  transition: transform var(--transition-interactive), background var(--transition-interactive);
}

.section-nav__item.active .section-nav__dot {
  transform: scale(1.8);
  background: var(--color-primary);
}

@media (max-width: 900px) {
  .section-nav { display: none; }
}

/* ── Hero section ── */
.hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-32) var(--space-8) var(--space-24);
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}

.hero__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.3s forwards;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: 0.95;
  color: var(--color-text);
  letter-spacing: -0.02em;
  max-width: var(--content-wide);
  margin-bottom: var(--space-10);
  overflow: hidden;
}

.hero__headline .line {
  display: block;
  opacity: 0;
  clip-path: inset(100% 0 0 0);
}

.hero__headline .line:nth-child(1) { animation: revealLine 0.9s var(--ease-out) 0.2s forwards; }
.hero__headline .line:nth-child(2) { animation: revealLine 0.9s var(--ease-out) 0.35s forwards; }
.hero__headline .line:nth-child(3) { animation: revealLine 0.9s var(--ease-out) 0.5s forwards; }

.hero__sub {
  display: flex;
  align-items: flex-end;
  gap: var(--space-16);
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.7s forwards;
}

.hero__desc {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 480px;
  line-height: 1.55;
}

.hero__scroll-hint {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  text-decoration: none;
  margin-left: auto;
  transition: color var(--transition-interactive);
}

.hero__scroll-hint:hover { color: var(--color-text); }

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: var(--color-text-faint);
  display: inline-block;
  animation: scrollPulse 2s ease-in-out infinite;
}

/* Hero background grid */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, color-mix(in oklab, var(--color-divider) 50%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in oklab, var(--color-divider) 50%, transparent) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.5;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 100%, transparent 40%, black 100%);
}

/* ── About section ── */
.about {
  padding: clamp(var(--space-20), 10vw, var(--space-32)) var(--space-8);
  background: var(--color-bg);
}

.section-label {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-16);
  line-height: 1;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  max-width: var(--content-wide);
  align-items: start;
}

.about__copy h3 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.about__copy p {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.about__copy p:last-child { margin-bottom: 0; }

.about__pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.pillar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive), border-color var(--transition-interactive);
}

.pillar:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.pillar__icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-3);
}

.pillar__title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.pillar__text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: unset;
}

/* Timeline / experience strip */
.about__experience {
  margin-top: var(--space-20);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-divider);
  max-width: var(--content-wide);
}

.experience-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-8);
}

.experience-strip {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.exp-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
  min-width: 160px;
}

.exp-item__company {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.exp-item__role {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* ── Projects section ── */
.projects {
  padding: clamp(var(--space-20), 10vw, var(--space-32)) var(--space-8);
  background: var(--color-bg);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-4);
  max-width: var(--content-wide);
  margin-top: var(--space-12);
}

.project-card {
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 360px;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.project-card__top {}

.project-card__tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-5);
  backdrop-filter: blur(4px);
}

.project-card__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: var(--space-4);
}

.project-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
  max-width: 54ch;
}

.project-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-8);
}

.project-card__status {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}

.project-card__arrow {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}

.project-card:hover .project-card__arrow {
  background: rgba(255,255,255,0.3);
  transform: translate(2px, -2px);
}

/* Card color themes */
.project-card--halulu {
  background: linear-gradient(135deg, #1a3ff0 0%, #0d1a7a 100%);
  grid-column: span 7;
}

.project-card--wellprompted {
  background: linear-gradient(135deg, #0f9e6a 0%, #065438 100%);
  grid-column: span 5;
}

.project-card--29ai {
  background: linear-gradient(135deg, #1a1917 0%, #2d2b26 100%);
  border: 1px solid var(--color-border);
  grid-column: span 5;
}

.project-card--29ai .project-card__title,
.project-card--29ai .project-card__tag,
.project-card--29ai .project-card__status,
.project-card--29ai .project-card__arrow { color: rgba(255,255,255,0.9); }

.project-card--personal {
  background: linear-gradient(135deg, #c25a14 0%, #7a2e05 100%);
  grid-column: span 7;
}

/* Background decoration for cards */
.project-card__bg-circle {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  bottom: -80px;
  right: -80px;
  pointer-events: none;
}

.project-card__bg-circle-2 {
  position: absolute;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
  top: -40px;
  left: -40px;
  pointer-events: none;
}

/* ── Ask AI section ── */
.ask-ai {
  padding: clamp(var(--space-20), 10vw, var(--space-32)) var(--space-8);
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
}

.ask-ai__inner {
  max-width: var(--content-wide);
}

.ask-ai__headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-5);
}

.ask-ai__desc {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: var(--space-12);
}

.ask-ai__buttons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.ai-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-surface-2);
  text-decoration: none;
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
  cursor: pointer;
}

.ai-btn:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.ai-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.ai-btn__icon {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  flex-shrink: 0;
  object-fit: contain;
}

/* ── Contact section ── */
.contact {
  padding: clamp(var(--space-20), 10vw, var(--space-32)) var(--space-8);
  background: var(--color-bg);
}

.contact__inner {
  max-width: var(--content-wide);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact__headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.0;
  margin-bottom: var(--space-6);
}

.contact__desc {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-8);
}

.contact__email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: color var(--transition-interactive), gap var(--transition-interactive);
}

.contact__email:hover {
  color: var(--color-primary-hover);
  gap: var(--space-5);
}

.contact__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-10);
  padding-top: var(--space-10);
  border-top: 1px solid var(--color-divider);
}

.contact__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-surface);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  transition: border-color var(--transition-interactive), background var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}

.contact__link:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-2);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.contact__link-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Footer ── */
.footer {
  background: var(--color-text);
  color: var(--color-text-inverse);
  padding: var(--space-16) var(--space-8);
  position: relative;
  overflow: hidden;
}

.footer__inner {
  max-width: var(--content-wide);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.footer__brand {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.9;
}

.footer__domain {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  opacity: 0.4;
  letter-spacing: 0.06em;
  margin-top: var(--space-1);
}

.footer__copy {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: color-mix(in oklab, var(--color-text-inverse) 50%, transparent);
  letter-spacing: 0.04em;
}

/* Footer mammoth SVG illustration */
.footer__mammoth {
  position: absolute;
  right: var(--space-8);
  bottom: 0;
  opacity: 0.06;
  width: 220px;
  pointer-events: none;
}

/* ── Utility ── */
.container {
  max-width: var(--content-wide);
  margin: 0 auto;
}

.divider {
  height: 1px;
  background: var(--color-divider);
  margin: 0;
}

/* ── Animations ── */
@keyframes revealLine {
  to {
    opacity: 1;
    clip-path: inset(0 0 0 0);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(0.6); transform-origin: top; }
}

/* Scroll-driven reveals */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 80%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
  }

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

  .project-card--halulu,
  .project-card--wellprompted,
  .project-card--29ai,
  .project-card--personal {
    grid-column: span 12;
  }
}

@media (max-width: 768px) {
  .nav__links { display: none; }

  .hero {
    padding: var(--space-24) var(--space-6) var(--space-16);
  }

  .about,
  .projects,
  .ask-ai,
  .contact {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }

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

  .hero__sub {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-6);
  }

  .hero__scroll-hint {
    margin-left: 0;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .nav {
    padding: var(--space-4) var(--space-5);
  }

  .ask-ai__buttons {
    flex-direction: column;
  }

  .ai-btn {
    width: 100%;
    justify-content: center;
  }
}

/* ── Writing / Substack section ── */
.writing {
  padding: clamp(var(--space-20), 10vw, var(--space-32)) var(--space-8);
  background: var(--color-text);
  color: var(--color-text-inverse);
  position: relative;
  overflow: hidden;
}

.writing__inner {
  max-width: var(--content-wide);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  align-items: center;
}

.writing__kicker {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

[data-theme='dark'] .writing__kicker,
[data-theme='light'] .writing .writing__kicker {
  color: #7892f8;
}

.writing__headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.0;
  margin-bottom: var(--space-6);
}

.writing__desc {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  max-width: 50ch;
  margin-bottom: var(--space-10);
}

.writing__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  padding: var(--space-4) var(--space-6);
  border: 1.5px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-full);
  transition: border-color var(--transition-interactive), background var(--transition-interactive), gap var(--transition-interactive);
}

.writing__cta:hover {
  border-color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.08);
  gap: var(--space-4);
}

.writing__topics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.topic-chip {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  letter-spacing: 0.02em;
  transition: background var(--transition-interactive), color var(--transition-interactive);
}

.topic-chip:hover {
  background: rgba(255,255,255,0.14);
  color: rgba(255,255,255,0.95);
}

.substack-card {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-6) var(--space-7);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: #fff;
  transition: background var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
}

.substack-card:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-2px);
}

.substack-card__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: #FF6719;
  border-radius: var(--radius-md);
  color: #fff;
  flex-shrink: 0;
}

.substack-card__body {
  flex: 1;
}

.substack-card__name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: #fff;
  max-width: unset;
}

.substack-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  max-width: unset;
}

.substack-card__arrow {
  color: rgba(255,255,255,0.4);
  flex-shrink: 0;
  transition: color var(--transition-interactive), transform var(--transition-interactive);
}

.substack-card:hover .substack-card__arrow {
  color: rgba(255,255,255,0.8);
  transform: translate(2px, -2px);
}

.projects__sub {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-top: calc(-1 * var(--space-10));
  margin-bottom: 0;
  max-width: 60ch;
}

@media (max-width: 1024px) {
  .writing__inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
}

@media (max-width: 768px) {
  .writing {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* ── Nav LinkedIn link ── */
.nav__linkedin {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: color var(--transition-interactive), background var(--transition-interactive), border-color var(--transition-interactive);
}

.nav__linkedin:hover {
  color: #0A66C2;
  background: color-mix(in oklab, #0A66C2 8%, var(--color-bg));
  border-color: #0A66C2;
}

@media (max-width: 600px) {
  .nav__linkedin span:not(svg) { display: none; }
  .nav__linkedin { padding: var(--space-2); }
}

/* ── Certifications ── */
.about__certs {
  margin-top: var(--space-10);
  padding-top: var(--space-10);
  border-top: 1px solid var(--color-divider);
  max-width: var(--content-wide);
}

.certs-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.cert-badge {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

/* ── Contact Form ── */
.contact__left {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  width: 100%;
  max-width: 480px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.form-input {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: var(--space-3) var(--space-4);
  width: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
  -webkit-appearance: none;
}

.form-input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.5;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 15%, transparent);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.15s ease;
  align-self: flex-start;
}

.form-submit:hover:not(:disabled) {
  opacity: 0.88;
  transform: translateY(-1px);
}

.form-submit:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.form-message {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: 6px;
}

.form-message--success {
  background: color-mix(in srgb, #22c55e 12%, transparent);
  color: #16a34a;
  border: 1px solid color-mix(in srgb, #22c55e 30%, transparent);
}

.form-message--error {
  background: color-mix(in srgb, #ef4444 12%, transparent);
  color: #dc2626;
  border: 1px solid color-mix(in srgb, #ef4444 30%, transparent);
}

[data-theme="dark"] .form-message--success {
  color: #4ade80;
}

[data-theme="dark"] .form-message--error {
  color: #f87171;
}

/* ── Real Estate project card ── */
.project-card--realestate {
  background: linear-gradient(135deg, #1a2e1a 0%, #2d4a2d 60%, #1a3a2a 100%);
  color: #e8f5e8;
  grid-column: span 5;
}

.project-card--realestate .project-card__tag {
  background: rgba(255,255,255,0.12);
  color: #a8d8a8;
}

.project-card--realestate .project-card__status {
  color: #a8d8a8;
}

@media (max-width: 768px) {
  .project-card--realestate {
    grid-column: span 12;
  }
}

/* ── Speaking & Media ── */
.about__speaking {
  margin-top: var(--space-16);
}

.speaking-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-6);
  margin-bottom: var(--space-6);
}

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

@media (max-width: 540px) {
  .speaking-grid {
    grid-template-columns: 1fr;
  }
}

.talk-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  background: var(--color-surface);
}

.talk-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.talk-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.talk-card__venue {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.talk-card__year {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

.talk-card__title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-text);
  flex: 1;
  margin: 0;
}

.talk-card__format {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: auto;
}

.wwt-profile-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.wwt-profile-link:hover {
  border-bottom-color: var(--color-primary);
}

/* ── Pillar inline link ── */
.pillar__link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity 0.2s ease;
}

.pillar__link:hover {
  opacity: 0.75;
}

/* ── About family photo ── */
.about__family-photo {
  grid-column: 1 / -1;
  margin: 0 0 var(--space-8) 0;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}

.about__family-photo img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  object-position: center 20%;
  display: block;
  border-radius: 12px;
}

.about__family-photo figcaption {
  position: absolute;
  bottom: var(--space-4);
  left: var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: white;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: var(--space-2) var(--space-3);
  border-radius: 6px;
}

@media (max-width: 768px) {
  .about__family-photo img {
    height: 280px;
  }
}