/* ============================================================
   CloutMap Blog — Shared Stylesheet
   Editorial dark-mode aesthetic with the CloutMap brand palette.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700;9..144,800&family=IBM+Plex+Sans:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ---------- Design Tokens ---------- */
:root {
  /* Brand (mirrors src/index.css) */
  --clout-purple: 280 100% 70%;
  --clout-purple-light: 290 100% 80%;
  --clout-purple-dark: 270 80% 50%;
  --clout-pink: 320 100% 75%;
  --clout-blue: 240 100% 70%;

  /* Surfaces */
  --bg: 240 10% 3.9%;
  --bg-elevated: 240 10% 6%;
  --surface: 240 10% 8%;
  --surface-hi: 250 15% 12%;
  --border: 260 20% 18%;
  --border-strong: 270 30% 28%;

  /* Text */
  --fg: 0 0% 98%;
  --fg-muted: 240 8% 68%;
  --fg-dim: 240 6% 48%;
  --fg-prose: 0 0% 92%;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, hsl(var(--clout-purple)), hsl(var(--clout-pink)));
  --gradient-secondary: linear-gradient(135deg, hsl(var(--clout-blue)), hsl(var(--clout-purple)));
  --gradient-text: linear-gradient(100deg, hsl(var(--clout-purple-light)) 0%, hsl(var(--clout-pink)) 55%, hsl(var(--clout-purple)) 100%);

  /* Effects */
  --glow-purple: 0 0 40px hsl(var(--clout-purple) / 0.35);
  --glow-soft: 0 0 60px hsl(var(--clout-purple) / 0.12);
  --shadow-card: 0 10px 40px -10px hsl(var(--clout-purple) / 0.25);
  --shadow-lift: 0 24px 60px -20px hsl(var(--clout-purple) / 0.4);

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.35s var(--ease-out);

  /* Type */
  --font-display: 'Fraunces', 'Times New Roman', Georgia, serif;
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout */
  --content-max: 720px;
  --page-max: 1200px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: hsl(var(--fg));
  background: hsl(var(--bg));
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, hsl(var(--clout-purple) / 0.18), transparent 60%),
    radial-gradient(ellipse 60% 40% at 90% 10%, hsl(var(--clout-pink) / 0.08), transparent 70%),
    radial-gradient(ellipse 40% 30% at 10% 40%, hsl(var(--clout-blue) / 0.06), transparent 70%);
  background-attachment: fixed;
  font-feature-settings: 'kern', 'liga', 'calt', 'ss01';
  overflow-x: hidden;
}

/* Subtle grain overlay for atmosphere */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

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

::selection {
  background: hsl(var(--clout-purple) / 0.4);
  color: hsl(var(--fg));
}

/* ---------- Header / Nav ---------- */
.blog-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  background: hsl(var(--bg) / 0.72);
  border-bottom: 1px solid hsl(var(--border) / 0.6);
}

.blog-nav {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.blog-logo {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 600;
  font-size: 24px;
  letter-spacing: -0.02em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: filter var(--transition);
  position: relative;
}

.blog-logo::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.blog-logo:hover {
  filter: brightness(1.15);
}

.blog-logo:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.blog-nav .btn-primary {
  flex-shrink: 0;
}

/* ---------- Main ---------- */
.blog-main {
  position: relative;
  z-index: 2;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 64px 32px 96px;
}

/* ---------- Blog Index Hero ---------- */
.blog-index-hero {
  max-width: 820px;
  margin: 0 auto 72px;
  text-align: left;
  padding: 24px 0 8px;
  position: relative;
}

.blog-index-hero::before {
  content: 'Field notes';
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: hsl(var(--clout-purple-light));
  padding: 6px 14px;
  margin-bottom: 24px;
  border: 1px solid hsl(var(--clout-purple) / 0.35);
  border-radius: 999px;
  background: hsl(var(--clout-purple) / 0.08);
}

.blog-index-hero h1 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-variation-settings: 'opsz' 144;
  font-weight: 400;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin: 0 0 24px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.blog-index-hero h1 em {
  font-style: italic;
  font-weight: 300;
}

.blog-index-hero p {
  font-size: 20px;
  line-height: 1.55;
  color: hsl(var(--fg-muted));
  max-width: 620px;
  margin: 0;
  font-weight: 300;
}

/* ---------- Article Card Grid ---------- */
.article-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 48px;
}

@media (min-width: 720px) {
  .article-card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
}

@media (min-width: 1080px) {
  .article-card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.article-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 32px 30px 28px;
  background: linear-gradient(145deg, hsl(var(--surface)) 0%, hsl(var(--surface-hi)) 100%);
  border: 1px solid hsl(var(--border));
  border-radius: 18px;
  overflow: hidden;
  isolation: isolate;
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.article-card::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(
    circle at var(--x, 50%) var(--y, 0%),
    hsl(var(--clout-purple) / 0.18),
    transparent 55%
  );
  opacity: 0;
  transition: opacity var(--transition);
}

.article-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, hsl(var(--clout-purple) / 0.5), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: hsl(var(--clout-purple) / 0.55);
  box-shadow: var(--shadow-lift);
}

.article-card:hover::before,
.article-card:hover::after {
  opacity: 1;
}

.article-card h2,
.article-card h3 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0;
  color: hsl(var(--fg));
  background: none;
  -webkit-text-fill-color: initial;
}

.article-card a {
  color: inherit;
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: hsl(var(--fg-dim));
}

.article-card-meta .tag {
  margin-right: 4px;
}

.article-card-meta .reading-time::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: hsl(var(--fg-dim));
  margin: 0 8px 2px 0;
  vertical-align: middle;
}

.article-excerpt {
  color: hsl(var(--fg-muted));
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
  flex-grow: 1;
}

.article-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: hsl(var(--clout-purple-light));
  font-weight: 500;
  transition: gap var(--transition), color var(--transition);
}

/* Stretch the link to cover the entire card, making the whole card clickable */
.article-card-link::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
}

.article-card-link::after {
  content: '→';
  display: inline-block;
  transition: transform var(--transition);
}

.article-card:hover .article-card-link {
  gap: 14px;
  color: hsl(var(--clout-pink));
}

.article-card:hover .article-card-link::after {
  transform: translateX(4px);
}

/* ---------- Article Page ---------- */
.blog-article {
  max-width: var(--content-max);
  margin: 0 auto;
  position: relative;
}

.article-meta {
  margin-bottom: 56px;
  padding-bottom: 32px;
  border-bottom: 1px solid hsl(var(--border) / 0.7);
}

.article-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: hsl(var(--fg-dim));
  margin-bottom: 28px;
}

.article-breadcrumb a {
  color: hsl(var(--fg-muted));
  transition: color var(--transition);
}

.article-breadcrumb a:hover {
  color: hsl(var(--clout-purple-light));
}

.article-breadcrumb span,
.article-breadcrumb .separator {
  color: hsl(var(--fg-dim) / 0.6);
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
  font-size: 13px;
  color: hsl(var(--fg-dim));
}

.article-meta-row > *:not(:last-child)::after {
  content: '·';
  display: inline-block;
  margin-left: 14px;
  color: hsl(var(--fg-dim) / 0.5);
}

.article-meta-row .tag::after {
  content: none;
}

/* ---------- Tag Badge ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: hsl(var(--clout-purple-light));
  background: hsl(var(--clout-purple) / 0.1);
  border: 1px solid hsl(var(--clout-purple) / 0.28);
  border-radius: 999px;
  white-space: nowrap;
}

.reading-time {
  font-size: 12px;
  color: hsl(var(--fg-dim));
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: hsl(var(--fg));
  background: var(--gradient-primary);
  border: 1px solid hsl(var(--clout-purple-light) / 0.4);
  border-radius: 999px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  box-shadow: 0 4px 24px -8px hsl(var(--clout-purple) / 0.6), inset 0 1px 0 hsl(0 0% 100% / 0.15);
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    filter var(--transition);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, hsl(var(--clout-pink)), hsl(var(--clout-purple)));
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 32px -6px hsl(var(--clout-purple) / 0.75), inset 0 1px 0 hsl(0 0% 100% / 0.2);
  filter: brightness(1.08);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:focus-visible {
  outline: 2px solid hsl(var(--clout-purple));
  outline-offset: 4px;
}

/* ---------- Article Prose ---------- */
.blog-article h1 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-variation-settings: 'opsz' 144;
  font-weight: 400;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.032em;
  margin: 0 0 20px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: 4px;
}

.blog-article h1 em,
.blog-article h2 em,
.blog-article h3 em {
  font-style: italic;
  font-weight: 300;
}

.blog-article h2 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(28px, 3.6vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.022em;
  margin: 72px 0 20px;
  color: hsl(var(--fg));
  position: relative;
  padding-top: 8px;
}

.blog-article h2::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.blog-article h3 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 600;
  font-size: clamp(22px, 2.4vw, 26px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  margin: 48px 0 14px;
  color: hsl(var(--fg));
}

.blog-article p {
  font-size: 18px;
  line-height: 1.75;
  margin: 0 0 24px;
  color: hsl(var(--fg-prose));
  font-weight: 400;
}

.blog-article p + p {
  margin-top: -4px;
}

.blog-article a {
  color: hsl(var(--clout-purple-light));
  text-decoration: none;
  background-image: linear-gradient(hsl(var(--clout-purple) / 0.5), hsl(var(--clout-purple) / 0.5));
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size var(--transition), color var(--transition);
}

.blog-article a:hover {
  color: hsl(var(--clout-pink));
  background-image: linear-gradient(hsl(var(--clout-pink)), hsl(var(--clout-pink)));
}

.blog-article strong {
  color: hsl(var(--fg));
  font-weight: 600;
}

.blog-article em {
  font-style: italic;
  color: hsl(var(--clout-purple-light));
}

.blog-article ul,
.blog-article ol {
  margin: 0 0 28px;
  padding-left: 0;
  list-style: none;
}

.blog-article ul li,
.blog-article ol li {
  font-size: 18px;
  line-height: 1.7;
  color: hsl(var(--fg-prose));
  padding-left: 32px;
  position: relative;
  margin-bottom: 12px;
}

.blog-article ul li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0.75em;
  width: 10px;
  height: 1px;
  background: var(--gradient-primary);
}

.blog-article ol {
  counter-reset: ol-counter;
}

.blog-article ol li {
  counter-increment: ol-counter;
  padding-left: 40px;
}

.blog-article ol li::before {
  content: counter(ol-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: hsl(var(--clout-purple-light));
  letter-spacing: 0.02em;
}

.blog-article li ul,
.blog-article li ol {
  margin: 12px 0 8px;
}

.blog-article hr {
  border: none;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    hsl(var(--border-strong)) 20%,
    hsl(var(--clout-purple) / 0.4) 50%,
    hsl(var(--border-strong)) 80%,
    transparent
  );
  margin: 64px auto;
  max-width: 300px;
}

.blog-article blockquote {
  margin: 32px 0;
  padding: 8px 0 8px 28px;
  border-left: 2px solid hsl(var(--clout-purple) / 0.6);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: 22px;
  line-height: 1.5;
  color: hsl(var(--fg));
  letter-spacing: -0.01em;
}

.blog-article code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 2px 7px;
  background: hsl(var(--clout-purple) / 0.12);
  border: 1px solid hsl(var(--clout-purple) / 0.22);
  border-radius: 5px;
  color: hsl(var(--clout-purple-light));
}

.blog-article pre {
  margin: 28px 0;
  padding: 20px 24px;
  background: hsl(var(--bg-elevated));
  border: 1px solid hsl(var(--border));
  border-radius: 12px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
}

.blog-article pre code {
  background: none;
  border: none;
  padding: 0;
  color: hsl(var(--fg));
  font-size: inherit;
}

/* Tables */
.blog-article table {
  width: 100%;
  margin: 32px 0;
  border-collapse: separate;
  border-spacing: 0;
  background: linear-gradient(145deg, hsl(var(--surface)), hsl(var(--surface-hi)));
  border: 1px solid hsl(var(--border));
  border-radius: 14px;
  overflow: hidden;
  font-size: 15px;
}

.blog-article thead {
  background: hsl(var(--clout-purple) / 0.08);
}

.blog-article th {
  text-align: left;
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: hsl(var(--clout-purple-light));
  border-bottom: 1px solid hsl(var(--border-strong));
}

.blog-article td {
  padding: 14px 20px;
  color: hsl(var(--fg-prose));
  border-bottom: 1px solid hsl(var(--border) / 0.6);
  vertical-align: top;
}

.blog-article tbody tr:last-child td {
  border-bottom: none;
}

.blog-article tbody tr {
  transition: background var(--transition);
}

.blog-article tbody tr:hover {
  background: hsl(var(--clout-purple) / 0.05);
}

/* Drop-cap flourish on the first paragraph after H1 */
.blog-article h1 + p::first-letter {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 4.2em;
  line-height: 0.88;
  float: left;
  padding: 6px 12px 0 0;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Footer ---------- */
.blog-footer {
  position: relative;
  z-index: 2;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 48px 32px 56px;
  text-align: center;
  border-top: 1px solid hsl(var(--border) / 0.5);
}

.blog-footer p {
  margin: 6px 0;
  font-size: 13px;
  color: hsl(var(--fg-dim));
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.blog-footer a {
  color: hsl(var(--fg-muted));
  transition: color var(--transition);
  border-bottom: 1px solid hsl(var(--border-strong));
}

.blog-footer a:hover {
  color: hsl(var(--clout-purple-light));
  border-bottom-color: hsl(var(--clout-purple));
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .blog-nav {
    padding: 14px 20px;
  }

  .blog-logo {
    font-size: 20px;
  }

  .blog-nav .btn-primary {
    padding: 10px 16px;
    font-size: 13px;
  }

  .blog-main {
    padding: 40px 20px 72px;
  }

  .blog-index-hero {
    margin-bottom: 48px;
  }

  .blog-article p,
  .blog-article ul li,
  .blog-article ol li {
    font-size: 17px;
  }

  .blog-article h2 {
    margin-top: 56px;
  }

  .article-meta {
    margin-bottom: 40px;
  }

  .article-meta-row {
    gap: 10px;
  }

  .article-card {
    padding: 26px 24px;
  }

  .blog-article h1 + p::first-letter {
    font-size: 3.6em;
  }

  .blog-article table {
    font-size: 14px;
  }

  .blog-article th,
  .blog-article td {
    padding: 12px 14px;
  }
}

@media (max-width: 440px) {
  .blog-nav {
    gap: 12px;
  }

  .article-meta-row > *:not(:last-child)::after {
    margin-left: 10px;
  }
}

/* ---------- Motion Preference ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Focus ---------- */
:focus-visible {
  outline: 2px solid hsl(var(--clout-purple));
  outline-offset: 3px;
  border-radius: 4px;
}