/* ===== almazrobots blog theme ===== */
/* Matches main Next.js site design system */

:root {
  --color-bg: #0C0C0C;
  --color-bg-card: rgba(255, 255, 255, 0.03);
  --color-bg-card-hover: rgba(255, 255, 255, 0.05);
  --color-text-primary: #F0F0F0;
  --color-text-secondary: #888888;
  --color-text-muted: #555555;
  --color-accent-amber: #FFB870;
  --color-accent-coral: #FF8A50;
  --color-border-subtle: rgba(255, 255, 255, 0.06);
  --color-border-hover: rgba(255, 180, 112, 0.2);

  --font-display: 'Playfair Display', serif;
  --font-body: 'DM Sans', sans-serif;
  --font-ui: 'Space Grotesk', sans-serif;

  --fs-hero: clamp(3rem, 5.5vw, 5rem);
  --fs-section: clamp(2.25rem, 4vw, 3.5rem);
  --fs-card-title: clamp(1.15rem, 1.5vw, 1.35rem);
  --fs-body-lg: clamp(1.05rem, 1.3vw, 1.25rem);
  --fs-body: clamp(0.95rem, 1.1vw, 1.125rem);

  --max-width: 1200px;
  --content-width: 740px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  min-height: 100vh;
}

::selection {
  background: rgba(255, 184, 112, 0.3);
  color: #F0F0F0;
}

a {
  color: var(--color-accent-amber);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--color-accent-coral);
}

/* Card links reset — no amber on wrapper links */
a.post-card {
  color: var(--color-text-primary);
}
a.post-card:hover {
  color: var(--color-text-primary);
}

/* ===== Grain overlay ===== */
.grain {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===== Gradient text ===== */
.text-gradient-warm {
  background: linear-gradient(135deg, #FFB870, #FF8A50);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(12, 12, 12, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-text-primary);
  text-transform: uppercase;
}
.logo:hover { color: var(--color-accent-amber); }

.header-nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--color-text-primary); }
.nav-link--active { color: var(--color-accent-amber); }

.nav-cta {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--color-border-subtle);
  border-radius: 6px;
  color: var(--color-text-primary);
  transition: all 0.3s;
}
.nav-cta:hover {
  border-color: var(--color-border-hover);
  background: rgba(255, 184, 112, 0.05);
  color: var(--color-accent-amber);
}

/* ===== Blog hero ===== */
.blog-hero {
  padding: 8rem 2rem 3rem;
  text-align: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.blog-hero__label {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.blog-hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-section);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.blog-hero__desc {
  color: var(--color-text-secondary);
  font-size: var(--fs-body-lg);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* ===== Posts container ===== */
.posts-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

/* ===== LAYOUT: Cards Grid ===== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .posts-grid { grid-template-columns: 1fr; }
}

.post-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  color: inherit;
}
.post-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
}

.post-card__tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.post-tag {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-amber);
  background: rgba(255, 184, 112, 0.08);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
}

.post-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-card-title);
  font-weight: 500;
  line-height: 1.35;
  margin-bottom: 0.75rem;
  color: var(--color-text-primary);
}

.post-card__excerpt {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 1.25rem;
}

.post-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 1rem;
}

.post-card__readmore {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--color-accent-amber);
  text-transform: uppercase;
}

/* ===== Single post ===== */
.post-single {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
}

.post-single--has-toc {
  max-width: 1100px;
}

.post-single__header {
  max-width: var(--content-width);
}

.post-single--has-toc .post-single__header {
  max-width: none;
  padding-left: 240px;
}

.post-single__body {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
}

.post-single__back {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
  transition: color 0.2s;
}
.post-single__back:hover { color: var(--color-accent-amber); }

.post-single__meta {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.post-single__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.post-single__tags {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.post-single__content {
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--color-text-primary);
  max-width: var(--content-width);
  min-width: 0;
}

.post-single__content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 500;
  margin: 3rem 0 1.25rem;
  line-height: 1.3;
}

.post-single__content h3 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 500;
  margin: 2.5rem 0 1rem;
  line-height: 1.3;
}

.post-single__content p {
  margin-bottom: 1.5rem;
  color: var(--color-text-secondary);
}

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

.post-single__content ul, .post-single__content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  color: var(--color-text-secondary);
}

.post-single__content li {
  margin-bottom: 0.5rem;
}

.post-single__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}
.post-single__content th {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-amber);
  background: rgba(255, 184, 112, 0.06);
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-hover);
}
.post-single__content td {
  padding: 0.75rem 1rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: top;
}
.post-single__content tr:last-child td {
  border-bottom: none;
}
.post-single__content tbody tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.post-single__content blockquote {
  border-left: 3px solid var(--color-accent-amber);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: rgba(255, 184, 112, 0.03);
  border-radius: 0 8px 8px 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.post-single__content code {
  font-family: 'JetBrains Mono', monospace;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85em;
}

.post-single__content pre {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-subtle);
  border-radius: 8px;
  padding: 1.5rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.post-single__content pre code {
  background: none;
  padding: 0;
}

.post-single__content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 2rem 0;
}

/* ===== Mermaid diagrams ===== */
.mermaid-wrapper {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  margin: 2rem 0;
  overflow-x: auto;
}
.mermaid-wrapper pre.mermaid {
  background: none !important;
  border: none !important;
  padding: 0 !important;
  margin: 0 !important;
  text-align: center;
}
.mermaid-wrapper svg {
  max-width: 100%;
  height: auto;
}

.post-single__content hr {
  border: none;
  border-top: 1px solid var(--color-border-subtle);
  margin: 3rem 0;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-border-subtle);
  padding: 3rem 2rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-text-primary);
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-links a {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.03em;
}

.footer-copy {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

/* ===== Article figures ===== */
.article-figure {
  margin: 2rem 0;
  text-align: center;
}

.article-figure img {
  max-width: 100%;
  border-radius: 8px;
  margin: 0;
}

.article-figure figcaption {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
  line-height: 1.5;
}

.article-figure figcaption strong {
  color: var(--color-text-secondary);
}

/* ===== Table of Contents (sidebar) ===== */
.toc {
  position: sticky;
  top: 100px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding-right: 1rem;
}

.toc > ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc li {
  border-top: 1px solid var(--color-border-subtle);
}

.toc li:first-child {
  border-top: none;
}

.toc li li {
  border-top: none;
  padding-left: 0.75rem;
}

.toc a {
  display: block;
  padding: 0.5rem 0;
  font-family: var(--font-body);
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

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

.toc a.toc--active {
  color: var(--color-text-primary);
  font-weight: 600;
}

/* TOC scrollbar */
.toc::-webkit-scrollbar {
  width: 3px;
}
.toc::-webkit-scrollbar-thumb {
  background: var(--color-border-subtle);
  border-radius: 3px;
}

/* ===== Footnotes ===== */
.footnote-ref {
  font-size: 0.75em;
  vertical-align: super;
  line-height: 0;
  color: var(--color-accent-amber);
}

.footnote-ref:hover {
  color: var(--color-accent-coral);
}

.footnotes {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footnotes ol {
  padding-left: 1.25rem;
}

.footnotes li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.footnotes p {
  display: inline;
  color: var(--color-text-muted);
}

.footnotes .footnote-backref {
  color: var(--color-accent-amber);
  margin-left: 0.25rem;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .post-single--has-toc .post-single__header {
    padding-left: 0;
  }
  .post-single__body {
    display: block;
  }
  .toc {
    position: static;
    max-height: none;
    border: 1px solid var(--color-border-subtle);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin-bottom: 2rem;
  }
}

@media (max-width: 640px) {
  .header-inner { padding: 0.75rem 1rem; }
  .header-nav { gap: 1rem; }
  .blog-hero { padding: 6rem 1rem 2rem; }
  .posts-container { padding: 0 1rem 3rem; }
  .post-single { padding: 6rem 1rem 3rem; }
  .footer-inner { flex-direction: column; text-align: center; }
}