/* ============================================
   Jonathan Westley — minimalist B&W author site
   ============================================ */

:root,[data-theme='light']{
  /* Type scale */
  --text-xs: clamp(.75rem,.7rem + .25vw,.875rem);
  --text-sm: clamp(.8125rem,.78rem + .2vw,.9375rem);
  --text-base: clamp(1rem,.95rem + .25vw,1.0625rem);
  --text-lg: clamp(1.125rem,1rem + .5vw,1.375rem);
  --text-xl: clamp(1.5rem,1.2rem + 1.25vw,2.25rem);
  --text-2xl: clamp(2rem,1.5rem + 2vw,3rem);
  --text-3xl: clamp(2.5rem,1.5rem + 3.5vw,4.5rem);
  --text-hero: clamp(3rem,1rem + 7vw,7.5rem);

  /* Spacing */
  --space-1:.25rem; --space-2:.5rem; --space-3:.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;

  /* Pure black & white */
  --color-bg: #ffffff;
  --color-surface: #fafafa;
  --color-surface-2: #f4f4f2;
  --color-text: #0a0a0a;
  --color-text-muted: #5a5a5a;
  --color-text-faint: #a8a8a8;
  --color-text-inverse: #ffffff;
  --color-border: #e6e6e6;
  --color-divider: #ececec;

  --radius-sm:.25rem; --radius-md:.5rem; --radius-full:9999px;
  --transition-interactive: 220ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 920px;
  --content-wide: 1200px;

  --font-display: 'Boska', 'Cormorant Garamond', Georgia, serif;
  --font-body: 'General Sans', 'Inter', system-ui, sans-serif;
}

[data-theme='dark']{
  --color-bg: #0a0a0a;
  --color-surface: #131313;
  --color-surface-2: #1a1a1a;
  --color-text: #f4f4f2;
  --color-text-muted: #a0a0a0;
  --color-text-faint: #5a5a5a;
  --color-text-inverse: #0a0a0a;
  --color-border: #262626;
  --color-divider: #1f1f1f;
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme]){
    --color-bg: #0a0a0a;
    --color-surface: #131313;
    --color-surface-2: #1a1a1a;
    --color-text: #f4f4f2;
    --color-text-muted: #a0a0a0;
    --color-text-faint: #5a5a5a;
    --color-text-inverse: #0a0a0a;
    --color-border: #262626;
    --color-divider: #1f1f1f;
  }
}

/* ============ LAYOUT PRIMITIVES ============ */
.container{
  width:100%;
  max-width:var(--content-wide);
  margin-inline:auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-12));
}
.container--narrow{ max-width: var(--content-default); }

section{
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  position: relative;
}

/* ============ HEADER ============ */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg), transparent 8%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive);
}
.site-header.is-scrolled{ border-bottom-color: var(--color-divider); }
.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-block: var(--space-4);
}
.brand{
  display:flex;
  align-items:center;
  gap: var(--space-3);
  text-decoration:none;
  color: var(--color-text);
}
.brand-mark{ width: 28px; height: 28px; display:block; }
.brand-name{
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -.01em;
  line-height: 1;
}
.nav{ display:flex; align-items:center; gap: clamp(var(--space-4), 2vw, var(--space-8)); }
.nav a{
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: .02em;
  position: relative;
}
.nav a::after{
  content:'';
  position:absolute;
  left:0; right:0; bottom:-4px;
  height:1px;
  background: var(--color-text);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition-interactive);
}
.nav a:hover::after{ transform: scaleX(1); }
.theme-toggle{
  width: 36px; height: 36px;
  display:inline-flex; align-items:center; justify-content:center;
  color: var(--color-text);
  border-radius: var(--radius-full);
}
.theme-toggle:hover{ background: var(--color-surface-2); }
.nav-mobile-only{ display:none; }
@media (max-width: 640px){
  .nav .nav-desktop-only{ display: none; }
  .nav-mobile-only{ display: inline-flex; }
}

/* ============ HERO ============ */
.hero{
  min-height: clamp(560px, 88vh, 880px);
  display: grid;
  align-items: center;
  padding-block: clamp(var(--space-16), 10vw, var(--space-24));
  border-bottom: 1px solid var(--color-divider);
}
.hero-inner{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-6);
  max-width: 760px;
  margin-inline: auto;
  width: 100%;
}
.hero-inner > .hero-text{ width: 100%; }
.hero-eyebrow{
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: .25em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.hero h1{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-hero);
  letter-spacing: -.025em;
  line-height: .95;
  margin-bottom: var(--space-8);
}
.hero h1 em{
  font-style: italic;
  font-weight: 400;
}
.hero-tagline{
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 28ch;
  line-height: 1.4;
  margin-bottom: var(--space-10);
}
.hero-cta{
  display: inline-flex;
  align-items:center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  background: var(--color-text);
  color: var(--color-text-inverse);
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: .04em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
}
.hero-cta:hover{ opacity: .85; }
.hero-cta + .hero-cta-secondary{ margin-left: var(--space-4); }
.hero-cta-secondary{
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-text);
  padding-bottom: 2px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.hero-cta-secondary:hover{ opacity: .7; }
.hero-portrait{
  position: relative;
  width: clamp(88px, 9vw, 112px);
  aspect-ratio: 1 / 1;
  background: var(--color-surface-2);
  overflow: hidden;
  border-radius: 50%;
  margin: 0 0 var(--space-2) 0;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}
.hero-portrait img,
.hero-portrait svg{
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center 25%;
  filter: grayscale(100%) contrast(1.02);
}

/* ============ SECTION HEADERS ============ */
.section-eyebrow{
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: .25em;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.section-eyebrow::before{
  content:'';
  width: 32px;
  height: 1px;
  background: var(--color-text);
}
.section-title{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-2xl);
  letter-spacing: -.02em;
  line-height: 1.05;
  margin-bottom: var(--space-10);
  max-width: 22ch;
}
.section-title em{ font-style: italic; font-weight: 400; }

/* ============ ABOUT ============ */
.about{ background: var(--color-bg); }
.about-grid{
  display:grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
}
@media (min-width: 880px){
  .about-grid{ grid-template-columns: 5fr 7fr; gap: var(--space-20); align-items: start; }
}
.about-prose p{
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  max-width: 60ch;
}
.about-prose p.lede{
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: var(--space-8);
}

/* ============ PODCAST ============ */
.podcast{
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
}
.podcast-grid{
  display: grid;
  gap: var(--space-10);
  grid-template-columns: 1fr;
}
@media (min-width: 880px){
  .podcast-grid{ grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: center; }
}
.podcast-art{
  aspect-ratio: 1/1;
  background: var(--color-text);
  color: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.podcast-art-inner{
  text-align: center;
  padding: var(--space-8);
}
.podcast-art-eyebrow{
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: .3em;
  color: color-mix(in oklab, var(--color-bg), transparent 50%);
  margin-bottom: var(--space-4);
}
.podcast-art h3{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -.02em;
  line-height: 1;
}
.podcast-art h3 em{ font-style: italic; font-weight: 400; }
.podcast-art-host{
  margin-top: var(--space-8);
  font-size: var(--text-xs);
  letter-spacing: .25em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--color-bg), transparent 40%);
}
.podcast-copy h3{ display:none; }
.podcast-copy p{
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  max-width: 56ch;
}
.podcast-listen{
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.listen-link{
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--color-text);
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: .04em;
  border-radius: var(--radius-full);
}
.listen-link:hover{
  background: var(--color-text);
  color: var(--color-text-inverse);
}
.listen-link svg{ width: 16px; height: 16px; }

/* ============ WRITING ============ */
.writing{ background: var(--color-bg); }
.writing-list{
  display: grid;
  gap: 0;
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}
.writing-item{
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: padding-inline var(--transition-interactive);
}
@media (min-width: 720px){
  .writing-item{ grid-template-columns: 140px 1fr auto; gap: var(--space-8); align-items: baseline; }
}
.writing-item:hover{ padding-inline: var(--space-4); background: var(--color-surface); }
.writing-date{
  font-size: var(--text-xs);
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.writing-title{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-lg);
  line-height: 1.3;
  letter-spacing: -.01em;
}
.writing-arrow{
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: none;
}
@media (min-width: 720px){ .writing-arrow{ display: inline; } }
.writing-cta{
  margin-top: var(--space-10);
  display: flex;
  justify-content: center;
}

/* ============ BOOKS ============ */
.books{
  background: var(--color-bg);
}
.books-lede{
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-text-muted);
  max-width: 56ch;
  margin: var(--space-6) 0 var(--space-16);
}
.books-grid{
  display: grid;
  gap: var(--space-10);
  grid-template-columns: 1fr;
}
@media (min-width: 720px){
  .books-grid{
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-12);
  }
}
.book-card{
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-8) 0 var(--space-2);
  border-top: 1px solid var(--color-text);
  position: relative;
}
.book-number{
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--text-xl);
  line-height: 1;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-2);
  letter-spacing: .02em;
}
.book-title{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-2xl);
  line-height: 1.15;
  letter-spacing: -.015em;
  margin: 0;
  color: var(--color-text);
}
.book-title em{ font-style: italic; font-weight: 400; }
.book-subtitle{
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--text-base);
  line-height: 1.4;
  color: var(--color-text-muted);
  margin: var(--space-1) 0 0;
}
.book-blurb{
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  margin: var(--space-3) 0 0;
  max-width: 38ch;
}

/* ===== Episode list (Podcast section) ===== */
.episode-list{
  display: grid;
  gap: 0;
  margin-top: var(--space-12);
  border-top: 1px solid var(--color-border);
}
.episode-list-title{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-xl);
  letter-spacing: -.01em;
  margin: 0 0 var(--space-6);
  padding-top: var(--space-8);
}
.episode-list-title em{ font-style: italic; }
.episode-item{
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: padding-inline var(--transition-interactive), background var(--transition-interactive);
}
@media (min-width: 720px){
  .episode-item{
    grid-template-columns: 220px 1fr auto;
    gap: var(--space-8);
    align-items: baseline;
  }
}
.episode-item:hover{ padding-inline: var(--space-4); background: var(--color-surface); }
.episode-meta{
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.ep-tag{
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  line-height: 1;
  white-space: nowrap;
}
.ep-tag--short{
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-strong, var(--color-text));
}
.ep-tag--long{
  background: var(--color-text);
  color: var(--color-bg);
  border: 1px solid var(--color-text);
}
.ep-duration,
.ep-date{
  font-size: var(--text-xs);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.episode-title{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-lg);
  line-height: 1.3;
  letter-spacing: -.01em;
}
.episode-arrow{
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: none;
}
@media (min-width: 720px){ .episode-arrow{ display: inline; } }

/* ============ CONTACT ============ */
.contact{
  background: var(--color-text);
  color: var(--color-text-inverse);
  border-top: 1px solid var(--color-text);
}
.contact .section-eyebrow{ color: color-mix(in oklab, var(--color-text-inverse), transparent 50%); }
.contact .section-eyebrow::before{ background: var(--color-text-inverse); }
.contact-grid{
  display:grid;
  gap: var(--space-10);
  grid-template-columns: 1fr;
  align-items: end;
}
@media (min-width: 880px){
  .contact-grid{ grid-template-columns: 1.4fr 1fr; gap: var(--space-16); }
}
.contact h2{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-3xl);
  letter-spacing: -.02em;
  line-height: 1.05;
  max-width: 16ch;
  margin-bottom: var(--space-6);
}
.contact h2 em{ font-style: italic; font-weight: 400; }
.contact p{
  font-size: var(--text-base);
  line-height: 1.6;
  color: color-mix(in oklab, var(--color-text-inverse), transparent 25%);
  max-width: 44ch;
}
.contact-cta{
  display: inline-flex;
  align-items:center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  background: var(--color-text-inverse);
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: .04em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  margin-top: var(--space-8);
}
.contact-cta:hover{ opacity: .85; }
.social-list{
  list-style: none;
  display: grid;
  gap: var(--space-3);
}
.social-list a{
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-inverse);
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: .04em;
  border-bottom: 1px solid color-mix(in oklab, var(--color-text-inverse), transparent 70%);
  padding-block: var(--space-3);
}
.social-list a:hover{ border-bottom-color: var(--color-text-inverse); }
.social-list a span{ flex:1; }
.social-list svg{ width: 18px; height: 18px; opacity: .7; }

/* ============ FOOTER ============ */
.site-footer{
  background: var(--color-text);
  color: color-mix(in oklab, var(--color-text-inverse), transparent 40%);
  padding-block: var(--space-12);
  font-size: var(--text-xs);
  letter-spacing: .12em;
  text-transform: uppercase;
  border-top: 1px solid color-mix(in oklab, var(--color-text-inverse), transparent 85%);
}
.site-footer .container{
  display:flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: center;
}

/* ============ SCROLL REVEAL ============ */
.reveal{ opacity: 0; transform: translateY(20px); transition: opacity 800ms cubic-bezier(0.16,1,0.3,1), transform 800ms cubic-bezier(0.16,1,0.3,1); }
.reveal.is-visible{ opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity: 1; transform: none; }
}