/* Blog — paleta Revspark (index.html) */
:root {
  --color-base: #0C0E0B;
  --color-surface: #161813;
  --color-text: #F1F0E8;
  --color-muted: #8C8E83;
  --color-border: #25271F;
  --color-accent: #CBF14B;
  --color-accent-dim: #A8C93A;
  --color-text-faint: color-mix(in srgb, var(--color-text) 4%, transparent);
  --color-text-border: color-mix(in srgb, var(--color-text) 16%, transparent);
  --color-surface-glass: color-mix(in srgb, var(--color-surface) 55%, transparent);
  --color-accent-glow-12: color-mix(in srgb, var(--color-accent) 12%, transparent);
  --color-accent-glow-16: color-mix(in srgb, var(--color-accent) 16%, transparent);
  --color-accent-glow-22: color-mix(in srgb, var(--color-accent) 22%, transparent);
  --color-accent-glow-08: color-mix(in srgb, var(--color-accent) 8%, transparent);
  --radius-ui: 10px;
  --font-display: "Mozilla Text", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --header-height: 3.5rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-base);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; }

.container {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-surface-glass);
  backdrop-filter: blur(22px) saturate(165%);
  -webkit-backdrop-filter: blur(22px) saturate(165%);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0;
  flex-wrap: wrap;
  min-height: var(--header-height);
}

.logo {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: inherit;
}

.site-header .btn {
  padding: 0.42rem 0.9rem;
  font-size: 13px;
  box-shadow: 0 8px 24px var(--color-accent-glow-12);
}

.nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav a {
  font-size: 13px;
  color: var(--color-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

.nav a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.82rem 1.35rem;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-base);
  cursor: pointer;
  border-radius: 999px;
  box-shadow: 0 18px 42px var(--color-accent-glow-16);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 24px 48px var(--color-accent-glow-22);
}

.btn:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

.btn--outline {
  background: var(--color-text-faint);
  color: var(--color-text);
  border-color: var(--color-text-border);
  box-shadow: none;
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.section-label,
.blog-card__cat {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-label { color: var(--color-muted); }
.blog-card__cat { color: var(--color-accent); }

/* Blog listing hero */
.blog-page-hero {
  padding: calc(var(--header-height) + 3rem) 0 3rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.blog-page-hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 4.2vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  max-width: 20ch;
}

.blog-page-hero h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.blog-page-hero__intro {
  margin: 0;
  font-size: 16px;
  color: var(--color-muted);
  max-width: 42ch;
}

/* Blog listing grid */
.blog-listing {
  flex: 1;
  padding: 3rem 0 4rem;
}

.blog__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 760px) {
  .blog__grid { grid-template-columns: 1fr; }
}

.blog-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-ui);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 180ms ease, transform 180ms ease;
}

a.blog-card:hover,
a.blog-card:focus-visible {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

a.blog-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.blog-card h2,
.blog-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 0;
  line-height: 1.25;
}

.blog-card p {
  margin: 0;
  font-size: 15px;
  color: var(--color-muted);
  flex: 1;
}

.blog-card__meta {
  font-size: 13px;
  color: var(--color-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.blog-card__meta span:last-child {
  font-weight: 600;
  color: var(--color-accent);
}

/* Article header */
.post-header {
  padding: calc(var(--header-height) + 2.5rem) 0 2.5rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.post-header .container {
  max-width: 760px;
}

.post-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 13px;
  color: var(--color-muted);
  text-decoration: none;
  margin-bottom: 1.5rem;
  transition: color 180ms ease;
}

.post-back:hover { color: var(--color-accent); }

.post-back:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.post-category {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.75rem;
}

.post-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.85rem, 4.2vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.post-meta {
  font-size: 14px;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.post-meta::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--color-border);
}

/* Article body */
.post-main {
  flex: 1;
  padding: 3rem 0;
}

.post-main .container { max-width: 760px; }

.post-body { color: var(--color-muted); }

.post-body h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin: 2.5rem 0 0.75rem;
}

.post-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin: 1.75rem 0 0.5rem;
}

.post-body p {
  font-size: 17px;
  line-height: 1.65;
  margin: 0 0 1.1rem;
}

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

.post-body strong {
  font-weight: 600;
  color: var(--color-text);
}

.post-body ul,
.post-body ol {
  padding-left: 1.4rem;
  margin: 0 0 1.1rem;
}

.post-body li {
  font-size: 17px;
  line-height: 1.65;
  margin-bottom: 0.35rem;
}

.post-emphasis {
  position: relative;
  margin: 2rem 0;
  padding: 2rem 1.5rem 1.5rem;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-ui);
  background: var(--color-accent-glow-08);
  text-align: center;
}

.post-emphasis::before {
  content: "\201C";
  position: absolute;
  top: 0.25rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  color: var(--color-accent-glow-22);
}

.post-emphasis p {
  margin: 0;
  font-size: 17px;
  color: var(--color-text);
}

/* Related posts */
.related-posts {
  padding: 3rem 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.related-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 1.5rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .related-grid { grid-template-columns: 1fr; }
}

.related-grid .blog-card h3 {
  font-size: 17px;
}

.related-grid .blog-card__meta {
  border-top: none;
  padding-top: 0;
  justify-content: flex-start;
}

/* CTA */
.blog-cta {
  padding: 4rem 0 5rem;
  text-align: center;
  background: var(--color-base);
  border-top: 1px solid var(--color-border);
}

.blog-cta__inner {
  max-width: 640px;
  margin: 0 auto;
}

.blog-cta__subtitle {
  margin: 0 0 0.75rem;
  font-size: 16px;
  color: var(--color-muted);
}

.blog-cta h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}

.blog-cta__secondary {
  margin: 1rem 0 0;
  font-size: 14px;
  color: var(--color-muted);
}

.blog-cta__secondary a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms ease;
}

.blog-cta__secondary a:hover {
  border-bottom-color: var(--color-accent);
}

/* Footer */
.site-footer {
  padding: 1.5rem 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-muted);
  background: var(--color-base);
  border-top: 1px solid var(--color-border);
}

.site-footer a {
  color: var(--color-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.site-footer a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

.site-footer a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn,
  .blog-card,
  .post-back,
  .nav a,
  .site-footer a {
    transition: none;
  }
  .btn:hover,
  a.blog-card:hover {
    transform: none;
  }
}