/* ==========================================================================
   THE PENNY PLAN — dark editorial design system
   Cascade order: 1 tokens/base · 2 chrome · 3 hero/cards · 4 post/prose ·
   5 motion/interaction states · 6 integration glue
   ========================================================================== */

/* --------------------------------------------------------------------------
   1 · Tokens
   -------------------------------------------------------------------------- */
:root{
  /* Color */
  --bg:            #0A0B0D;
  --bg-2:          #0E1013;
  --surface:       #14171B;
  --surface-2:     #1B1F25;
  --border:        rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);

  --text:          #F4F5F7;
  --text-muted:    #AEB4BD;
  --text-faint:    #8B93A1;

  --accent:        #E7B667;
  --accent-strong: #F2CB82;
  --accent-deep:   #C8933B;
  --accent-tint:   rgba(231,182,103,0.12);

  --ring:          #F2CB82;

  --up:            #7ED9A6;
  --down:          #F09B9B;

  /* Type */
  --font-serif: "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-sans:  "Inter", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --step--1: clamp(0.80rem, 0.77rem + 0.14vw, 0.875rem);
  --step-0:  clamp(1.00rem, 0.96rem + 0.20vw, 1.075rem);
  --step-1:  clamp(1.20rem, 1.12rem + 0.40vw, 1.35rem);
  --step-2:  clamp(1.44rem, 1.30rem + 0.70vw, 1.70rem);
  --step-3:  clamp(1.73rem, 1.50rem + 1.10vw, 2.15rem);
  --step-4:  clamp(2.07rem, 1.70rem + 1.85vw, 2.70rem);
  --step-5:  clamp(2.49rem, 1.90rem + 3.00vw, 3.40rem);
  --step-6:  clamp(2.80rem, 1.90rem + 4.80vw, 4.75rem);

  --measure: 68ch;

  /* Space */
  --space-1:0.25rem; --space-2:0.5rem; --space-3:0.75rem; --space-4:1rem;
  --space-5:1.5rem;  --space-6:2rem;   --space-7:3rem;    --space-8:4rem;
  --space-9:6rem;    --space-10:8rem;

  /* Radius */
  --radius-xs:6px; --radius-sm:10px; --radius-md:14px; --radius-lg:20px; --radius-xl:28px; --radius-pill:999px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0,0,0,.45);
  --shadow-md: 0 8px 24px -8px rgba(0,0,0,.55), 0 2px 6px rgba(0,0,0,.40);
  --shadow-lg: 0 24px 60px -16px rgba(0,0,0,.65), 0 8px 24px -12px rgba(0,0,0,.50);
  --glow-accent: 0 10px 40px -12px rgba(231,182,103,0.35);
  --hairline-top: inset 0 1px 0 rgba(255,255,255,.05);

  /* Motion */
  --dur-1:120ms; --dur-2:220ms; --dur-3:420ms; --dur-4:720ms; --dur-5:1100ms;
  --ease-out:     cubic-bezier(0.16,1,0.30,1);
  --ease-in-out:  cubic-bezier(0.65,0,0.35,1);
  --ease-soft:    cubic-bezier(0.22,0.61,0.36,1);
  --ease-spring:  cubic-bezier(0.34,1.4,0.64,1);

  /* Glass */
  --glass-bg: color-mix(in srgb, var(--bg-2) 72%, transparent);

  /* Layout */
  --container: 72rem;
  --container-narrow: 46rem;

  /* Z-index */
  --z-hero-canvas: 0;
  --z-hero-content: 2;
  --z-header: 50;
  --z-skip: 100;
}

/* --------------------------------------------------------------------------
   1 · Reset
   -------------------------------------------------------------------------- */
*, *::before, *::after{ box-sizing: border-box; }
*{ margin: 0; }
html{ color-scheme: dark; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body{ min-height: 100svh; display: flex; flex-direction: column; }
img, picture, svg, canvas, video{ display: block; max-width: 100%; }
input, button, textarea, select{ font: inherit; color: inherit; }
ul[role="list"], ol[role="list"]{ list-style: none; padding: 0; }
:is(h1,h2,h3,h4,h5,h6,p){ overflow-wrap: break-word; }

/* --------------------------------------------------------------------------
   1 · Base elements / typography
   -------------------------------------------------------------------------- */
body{
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,h2,h3,h4,h5,h6{
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  color: var(--text);
}
h1{ font-size: var(--step-5); }
h2{ font-size: var(--step-3); }
h3{ font-size: var(--step-2); }
h4{ font-size: var(--step-1); }
h5,h6{ font-size: var(--step-0); }

p{ color: var(--text); }

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

strong,b{ font-weight: 600; }
small{ font-size: var(--step--1); color: var(--text-faint); }

::selection{ background: var(--accent-tint); color: var(--text); }

/* --------------------------------------------------------------------------
   1 · .wrap — shared container
   -------------------------------------------------------------------------- */
.wrap{
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}

/* --------------------------------------------------------------------------
   1 · Skip link
   -------------------------------------------------------------------------- */
.skip-link{
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: var(--z-skip);
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step--1);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top var(--dur-2) var(--ease-out);
}
.skip-link:focus{ top: var(--space-4); }

/* --------------------------------------------------------------------------
   2 · Header chrome (sticky glass)
   -------------------------------------------------------------------------- */
header.site{
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--glass-bg);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--hairline-top);
  transition: background var(--dur-2) var(--ease-out),
              backdrop-filter var(--dur-2) var(--ease-out),
              box-shadow var(--dur-2) var(--ease-out);
}
@supports not (backdrop-filter: blur(1px)){
  header.site{ background: var(--bg-2); }
}

header.site .wrap{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-block: var(--space-5);
  transition: padding-block var(--dur-2) var(--ease-out);
}

header.site.is-scrolled{
  background: color-mix(in srgb, var(--bg-2) 88%, transparent);
  backdrop-filter: blur(20px) saturate(1.3);
  -webkit-backdrop-filter: blur(20px) saturate(1.3);
  box-shadow: var(--shadow-sm);
}
@supports not (backdrop-filter: blur(1px)){
  header.site.is-scrolled{ background: var(--bg-2); }
}
header.site.is-scrolled .wrap{ padding-block: var(--space-3); }

.logo{
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--step-1);
  color: var(--text);
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}
.logo span{ color: var(--accent); }

header.site nav[aria-label="Main"]{
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
header.site nav[aria-label="Main"] a{
  position: relative;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--step--1);
  letter-spacing: 0.01em;
  padding-block: var(--space-3);
}
header.site nav[aria-label="Main"] a[aria-current="page"]{ color: var(--text); }

/* --------------------------------------------------------------------------
   2 · Footer chrome
   -------------------------------------------------------------------------- */
footer.site{
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  padding-block: var(--space-7);
  margin-top: auto;
}
footer.site .wrap{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}
footer.site nav[aria-label="Footer"]{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-5);
}
footer.site nav[aria-label="Footer"] a{
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--step--1);
}
footer.site p{
  color: var(--text-faint);
  font-size: var(--step--1);
  max-width: 46ch;
}

/* --------------------------------------------------------------------------
   2 · .site-main shells (page-type layout convention)
   -------------------------------------------------------------------------- */
.site-main{ flex: 1 1 auto; width: 100%; }

/* Homepage: full-bleed, sections self-manage their own .wrap */
.site-main.home{ padding: 0; }

/* Post pages: article owns the reading measure, main gives edge gutters */
.site-main.post-main{
  padding-inline: clamp(20px, 5vw, 40px);
  padding-block: var(--space-7) var(--space-9);
}

/* Everything else: narrow prose column */
.site-main.page.prose{
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
  padding-block: var(--space-8) var(--space-9);
}

/* --------------------------------------------------------------------------
   2 · .ad-slot restyle — refined bordered plaque, CLS-safe
   -------------------------------------------------------------------------- */
.ad-slot{
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  margin-block: var(--space-7);
  padding: var(--space-5);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}
.ad-slot span{
  color: var(--text-faint);
  font-family: var(--font-sans);
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   3 · Hero (homepage)
   -------------------------------------------------------------------------- */
.hero{
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 82svh;
  max-height: 980px;
  padding-block: var(--space-9);
  background-color: var(--bg);
  background-image:
    radial-gradient(60% 55% at 18% 12%, color-mix(in srgb, var(--accent) 20%, transparent) 0%, transparent 60%),
    radial-gradient(45% 40% at 88% 8%, color-mix(in srgb, var(--accent-deep) 16%, transparent) 0%, transparent 65%),
    radial-gradient(70% 60% at 50% 100%, color-mix(in srgb, var(--accent) 10%, transparent) 0%, transparent 70%),
    radial-gradient(120% 90% at 50% 0%, var(--bg-2) 0%, var(--bg) 55%);
}

.hero::after{
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.3;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/></svg>");
  background-size: 140px 140px;
}

#hero-canvas{
  position: absolute;
  inset: 0;
  z-index: var(--z-hero-canvas);
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0;
  transition: opacity var(--dur-5) var(--ease-out);
}

.hero-inner{
  position: relative;
  z-index: var(--z-hero-content);
  max-width: var(--container-narrow);
  text-align: center;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}

.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  background: var(--glass-bg);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}
@supports not (backdrop-filter: blur(1px)){
  .eyebrow{ background: var(--bg-2); }
}

.hero-inner h1{
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--step-6);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0;
}

.hero-sub{
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--step-1);
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 46ch;
  margin: 0;
}

.hero-cta{ margin-top: var(--space-2); }

/* Buttons — base appearance (motion layer adds hover/focus movement) */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step-0);
  line-height: 1.5;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-accent{
  background: linear-gradient(180deg, var(--accent-strong), var(--accent-deep));
  color: var(--bg);
  box-shadow: var(--glow-accent);
}

/* --------------------------------------------------------------------------
   3 · #guides / article grid
   -------------------------------------------------------------------------- */
.guides-section{ padding-block: var(--space-8); }
@media (min-width: 768px){
  .guides-section{ padding-block: var(--space-9); }
}

.section-head{
  margin-block-end: var(--space-7);
  max-width: var(--container-narrow);
}
.section-label{
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-block-end: var(--space-3);
}
.section-head h2{
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--step-4);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.qlist{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-6);
}

.qlist li{ display: block; }

.qlist li.featured{ grid-column: span 1; }
@media (min-width: 768px){
  .qlist li.featured{ grid-column: span 2; }
}

.card{
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  height: 100%;
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm), var(--hairline-top);
  text-decoration: none;
  overflow: hidden;
}

.card::before{
  content: "";
  position: absolute;
  top: 0;
  left: var(--space-6);
  right: var(--space-6);
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  transform: scaleX(0);
  transform-origin: left;
}

.card h3{
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: var(--step-2);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0;
}
li.featured .card h3{ font-size: var(--step-3); }

.card p{
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
  flex: 1;
}

.card-meta{
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--step--1);
  letter-spacing: 0.02em;
  color: var(--text-faint);
  margin-top: var(--space-2);
}

.card .arrow{
  color: var(--accent);
  display: inline-block;
}

/* Hover end-state appearance (motion layer supplies timing). Keyboard focus
   gets the outline ring only — no lift — so tabbing the grid stays calm. */
.card:hover{
  border-color: var(--accent);
  box-shadow: var(--shadow-lg), var(--glow-accent), var(--hairline-top);
  transform: translateY(-4px);
}
.card:hover::before{ transform: scaleX(1); }
.card:hover .arrow{ transform: translateX(4px); }
.card:focus-visible{ border-color: var(--accent); }

.all-guides-link{
  margin-block-start: var(--space-7);
  text-align: center;
}
.all-guides-link a{
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step-0);
  color: var(--text-muted);
  transition: color var(--dur-2) var(--ease-soft);
}
.all-guides-link .arrow{
  color: var(--accent);
  display: inline-block;
  transition: transform var(--dur-2) var(--ease-out);
}
.all-guides-link a:hover,
.all-guides-link a:focus-visible{ color: var(--text); }
.all-guides-link a:hover .arrow,
.all-guides-link a:focus-visible .arrow{ transform: translateX(4px); }

/* Guide index lists (the /guides/ archive page) */
.prose ul.guide-index{
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  columns: 2;
  column-gap: var(--space-7);
}
@media (max-width: 700px){
  .prose ul.guide-index{ columns: 1; }
}
.prose .guide-index li{
  break-inside: avoid;
  margin-block-end: var(--space-3);
}
.prose .guide-index a{
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--dur-2) var(--ease-soft);
}
.prose .guide-index a:hover,
.prose .guide-index a:focus-visible{ color: var(--accent); }

/* --------------------------------------------------------------------------
   3 · Live crypto ticker (homepage)
   -------------------------------------------------------------------------- */
.ticker-section{ padding-block-start: var(--space-6); }

.ticker{
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm), var(--hairline-top);
  padding: var(--space-6);
}

.ticker-head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-block-end: var(--space-5);
}
.ticker-head h2{
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step-0);
  letter-spacing: 0.02em;
  color: var(--text);
}
.ticker-updated{
  font-size: var(--step--1);
  color: var(--text-faint);
}

.ticker-grid{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr));
  gap: var(--space-4) var(--space-6);
}

.ticker-item{
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-inline-start: var(--space-4);
  border-inline-start: 2px solid var(--border);
}

.ticker-name{
  font-family: var(--font-sans);
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--text-muted);
}
.ticker-sym{
  color: var(--text-faint);
  letter-spacing: 0.06em;
  margin-inline-start: var(--space-1);
}

.ticker-price{
  font-family: var(--font-sans);
  font-size: var(--step-2);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.ticker-change{
  font-family: var(--font-sans);
  font-size: var(--step--1);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  min-height: 1.3em;
}
.ticker-change.up{ color: var(--up); }
.ticker-change.up::before{ content: "▲ "; font-size: 0.7em; }
.ticker-change.down{ color: var(--down); }
.ticker-change.down::before{ content: "▼ "; font-size: 0.7em; }

.ticker-status{
  margin-block-start: var(--space-4);
  font-size: var(--step--1);
  color: var(--text-faint);
}
.ticker-status[hidden]{ display: none; }

.ticker-note{
  margin-block-start: var(--space-4);
  padding-block-start: var(--space-4);
  border-block-start: 1px solid var(--border);
  font-size: var(--step--1);
  color: var(--text-faint);
}
.ticker-note a{
  color: var(--text-muted);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur-2) var(--ease-soft);
}
.ticker-note a:hover,
.ticker-note a:focus-visible{ color: var(--accent); }

/* --------------------------------------------------------------------------
   4 · Post (article shell — owns its own reading measure)
   -------------------------------------------------------------------------- */
.post{
  max-width: var(--measure);
  margin-inline: auto;
}

.progress-bar{
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent) 55%, var(--accent-strong));
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: calc(var(--z-header) + 1);
  pointer-events: none;
}

.breadcrumb{
  font-family: var(--font-sans);
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--text-faint);
  line-height: 1.6;
  margin-block-end: var(--space-6);
}
.breadcrumb-sep{ margin-inline: var(--space-2); }
.breadcrumb a{
  color: var(--text-muted);
  text-decoration: none;
}
.breadcrumb-sep{
  color: var(--accent);
  opacity: 0.8;
  font-size: 0.85em;
}
.breadcrumb-current{ color: var(--text-faint); }

.post h1{
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--step-4);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-block-end: var(--space-4);
}

.meta{
  display: flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: var(--step--1);
  color: var(--text-faint);
  margin-block-end: var(--space-7);
  padding-block-end: var(--space-6);
  border-bottom: 1px solid var(--border);
}
.meta-dot{
  color: var(--accent);
  margin-inline: var(--space-2);
  line-height: 1;
}

.post .ad-slot{ margin-block: var(--space-7); }

/* Prose body rendered from post content */
.post h2{
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step-2);
  letter-spacing: -0.01em;
  color: var(--text);
  margin-block: var(--space-8) var(--space-4);
  padding-block-start: var(--space-6);
  border-block-start: 1px solid var(--border);
  position: relative;
}
.post h2::before{
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--accent);
}
.post h3{
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step-1);
  color: var(--text);
  margin-block: var(--space-6) var(--space-3);
}
.post p{
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--text-muted);
  margin-block-end: var(--space-5);
}
.post a{
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.post ul,
.post ol{
  max-width: var(--measure);
  margin: 0 0 var(--space-5);
  padding-inline-start: 1.25em;
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--text-muted);
}
.post li{ margin-block-end: var(--space-2); }
.post li::marker{ color: var(--accent); }
.post strong{ color: var(--text); font-weight: 600; }
.post em{ color: var(--text); font-style: italic; }
.post blockquote{
  margin: var(--space-6) 0;
  padding: var(--space-5) var(--space-6);
  border-inline-start: 2px solid var(--accent);
  background: var(--surface);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-style: italic;
}
.post blockquote p:last-child{ margin-block-end: 0; }
.post hr{
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-8) 0;
}
.post img{
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin-block: var(--space-6);
  box-shadow: var(--shadow-md);
}
.post code{
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  color: var(--accent-strong);
  background: var(--surface);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-xs);
}
.post pre{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  overflow-x: auto;
  margin-block-end: var(--space-6);
}
.post pre code{
  background: none;
  padding: 0;
  color: var(--text-muted);
}

.post-footer{
  margin-block-start: var(--space-9);
  padding-block-start: var(--space-6);
  border-block-start: 1px solid var(--border);
}
.post-footer-link{
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step--1);
  color: var(--text-muted);
  text-decoration: none;
}
.post-footer-arrow{
  display: inline-block;
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   4 · .prose element styles (about / contact / privacy / disclaimer)
   -------------------------------------------------------------------------- */
.prose > *:first-child{ margin-block-start: 0; }

.prose h1{
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--step-5);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-block-end: var(--space-6);
}

.prose h2{
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step-2);
  letter-spacing: -0.01em;
  color: var(--text);
  margin-block: var(--space-8) var(--space-4);
  padding-block-start: var(--space-5);
  position: relative;
}
.prose h2::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--accent);
}

.prose h3{
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step-1);
  color: var(--text);
  margin-block: var(--space-6) var(--space-3);
}

.prose p{
  max-width: var(--measure);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--text-muted);
  margin-block-end: var(--space-5);
}

.prose a{
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur-2) var(--ease-soft);
}

.prose ul,
.prose ol{
  max-width: var(--measure);
  margin: 0 0 var(--space-5);
  padding-inline-start: 1.25em;
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--text-muted);
}
.prose li{ margin-block-end: var(--space-2); }
.prose li::marker{ color: var(--accent); }

.prose strong{ color: var(--text); font-weight: 600; }
.prose em{ color: var(--text); font-style: italic; }

.prose blockquote{
  max-width: var(--measure);
  margin: var(--space-6) 0;
  padding: var(--space-5) var(--space-6);
  border-inline-start: 2px solid var(--accent);
  background: var(--surface);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-style: italic;
}
.prose blockquote p{
  max-width: none;
  margin-block-end: 0;
}

.prose hr{
  max-width: var(--measure);
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-8) 0;
}

.prose code{
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  color: var(--accent-strong);
  background: var(--surface);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-xs);
}

/* --------------------------------------------------------------------------
   5 · Motion + interaction states
   -------------------------------------------------------------------------- */

/* Entrance reveal system — hidden state only applies once JS has announced
   itself via html.js, so content is never invisible without JavaScript */
html.js [data-reveal]{
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity var(--dur-4) var(--ease-out),
    transform var(--dur-4) var(--ease-out);
  transition-delay: calc(var(--i, 0) * 70ms);
}
html.js [data-reveal].is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* Nav link hover / focus / current (underline-grow) */
header.site nav[aria-label="Main"] a{
  transition: color var(--dur-2) var(--ease-soft);
}
header.site nav[aria-label="Main"] a::after{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-3) var(--ease-out);
}
header.site nav[aria-label="Main"] a:hover,
header.site nav[aria-label="Main"] a:focus-visible{ color: var(--text); }
header.site nav[aria-label="Main"] a:hover::after,
header.site nav[aria-label="Main"] a:focus-visible::after,
header.site nav[aria-label="Main"] a[aria-current="page"]::after{
  transform: scaleX(1);
}

/* Buttons: hover / active motion */
.btn{
  transition:
    transform var(--dur-2) var(--ease-out),
    box-shadow var(--dur-3) var(--ease-out),
    background-color var(--dur-2) var(--ease-soft),
    border-color var(--dur-2) var(--ease-soft),
    color var(--dur-2) var(--ease-soft);
}
.btn:hover{ transform: translateY(-2px); }
.btn-accent:hover{ box-shadow: var(--glow-accent); }
.btn:active{
  transform: translateY(0);
  transition-duration: var(--dur-1);
}

/* Card hover motion (end states live with the card component above) */
.card{
  transition:
    transform var(--dur-3) var(--ease-out),
    border-color var(--dur-3) var(--ease-out),
    box-shadow var(--dur-3) var(--ease-out);
}
.card::before{ transition: transform var(--dur-3) var(--ease-out); }
.card .arrow{ transition: transform var(--dur-2) var(--ease-out); }

/* Breadcrumb + post footer hover */
.breadcrumb a{ transition: color var(--dur-2) var(--ease-soft); }
.breadcrumb a:hover,
.breadcrumb a:focus-visible{ color: var(--accent); }

.post a{ transition: color var(--dur-2) var(--ease-soft); }
.post a:hover{ color: var(--accent-strong); }
.prose a:hover{ color: var(--accent-strong); }

.post-footer-link{ transition: color var(--dur-2) var(--ease-soft); }
.post-footer-arrow{ transition: transform var(--dur-2) var(--ease-out); }
.post-footer-link:hover,
.post-footer-link:focus-visible{ color: var(--text); }
.post-footer-link:hover .post-footer-arrow,
.post-footer-link:focus-visible .post-footer-arrow{ transform: translateX(-4px); }

/* Footer nav hover */
footer.site nav a{ transition: color var(--dur-2) var(--ease-soft); }
footer.site nav a:hover,
footer.site nav a:focus-visible{ color: var(--text); }

/* Focus-visible rings (global) */
:focus-visible{
  outline: 2px solid var(--ring);
  outline-offset: 3px;
}
.btn:focus-visible{ outline-offset: 4px; }
.card:focus-visible{ outline-offset: 2px; }

/* --------------------------------------------------------------------------
   6 · Integration glue
   -------------------------------------------------------------------------- */
html{ scroll-behavior: smooth; }

#guides{ scroll-margin-top: 88px; }

/* Homepage ad band sits between full-bleed sections; the .wrap div in
   index.md re-centers it without touching the ad include itself */
.site-main.home .ad-slot{ margin-block: 0; }
.home .ad-band{ padding-block: var(--space-2); }

/* --------------------------------------------------------------------------
   6 · Reduced motion — single global override block
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html{ scroll-behavior: auto; }

  [data-reveal]{
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    transition-delay: 0s !important;
  }

  .card:hover,
  .btn:hover,
  .btn:active{ transform: none !important; }

  header.site nav[aria-label="Main"] a::after,
  .card::before,
  .card .arrow,
  .post-footer-arrow{ transition: none !important; }
}