/* ===========================
   Core Networks — Global CSS
   =========================== */

:root {
  --bg:         #0d1b2e;
  --bg2:        #122036;
  --bg-card:    #182c42;
  --accent:     #0ea5e9;
  --accent-dim: rgba(14, 165, 233, 0.18);
  --accent-glow:rgba(14, 165, 233, 0.10);
  --text:       #dde8f2;
  --muted:      #7fa8c8;
  --border:     rgba(14, 165, 233, 0.18);
  --border-strong: rgba(14, 165, 233, 0.40);
  --font:       -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono:       'SF Mono', 'Fira Code', Consolas, monospace;
  --radius:     10px;
  --shadow:     0 4px 24px rgba(0,0,0,0.4);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: #38bdf8; }

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 27, 46, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.02em;
}

.nav-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: .85rem;
  font-weight: 800;
  color: #050d1a;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .02em;
  transition: color .2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-links a.active {
  color: var(--accent);
}

/* ── HERO ── */
.hero {
  position: relative;
  padding: 6rem 1.5rem 5rem;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(14,165,233,.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--border-strong);
  padding: .3rem .9rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.035em;
  margin-bottom: 1.25rem;
  color: #f0f9ff;
}

.hero h1 span { color: var(--accent); }

.hero-sub {
  max-width: 580px;
  margin: 0 auto 2.5rem;
  font-size: 1.1rem;
  color: var(--muted);
  line-height: 1.75;
}

.btn {
  display: inline-block;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-size: .95rem;
  font-weight: 600;
  transition: all .2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #050d1a;
}
.btn-primary:hover {
  background: #38bdf8;
  color: #050d1a;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(14,165,233,.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover {
  background: var(--accent-dim);
  color: var(--accent);
  transform: translateY(-1px);
}

.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── SECTION ── */
section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.section-label {
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .75rem;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -.03em;
  color: #f0f9ff;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-sub {
  color: var(--muted);
  font-size: 1rem;
  max-width: 520px;
  margin-bottom: 3rem;
}

/* ── DIVIDER ── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── CARDS ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color .2s, box-shadow .2s, transform .2s;
}

.card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 8px 32px rgba(14,165,233,.1);
  transform: translateY(-2px);
}

.card-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1.1rem;
}

.card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #f0f9ff;
  margin-bottom: .5rem;
  letter-spacing: -.01em;
}

.card p {
  font-size: .9rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ── STAT BAR ── */
.stat-bar {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
}

.stat-bar-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 2rem;
  text-align: center;
}

.stat-item .num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -.04em;
  line-height: 1;
  display: block;
}

.stat-item .label {
  font-size: .82rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-top: .3rem;
}

/* ── BLOG TEASER ── */
.blog-teaser {
  background: linear-gradient(135deg, var(--bg2) 0%, #071426 100%);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 3.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.blog-teaser::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(14,165,233,.08) 0%, transparent 70%);
  pointer-events: none;
}

.blog-teaser .badge {
  display: inline-block;
  background: rgba(251, 191, 36, .15);
  border: 1px solid rgba(251, 191, 36, .35);
  color: #fbbf24;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .3rem .85rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}

.blog-teaser h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: #f0f9ff;
  letter-spacing: -.03em;
  margin-bottom: .9rem;
}

.blog-teaser p {
  color: var(--muted);
  max-width: 500px;
  margin: 0 auto 2rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.tag {
  background: var(--accent-dim);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: .78rem;
  padding: .25rem .75rem;
  border-radius: 100px;
  font-family: var(--mono);
}

/* ── ABOUT PAGE ── */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 700px) {
  .about-intro { grid-template-columns: 1fr; gap: 2rem; }
}

.about-img-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  overflow: hidden;
  position: relative;
}

.about-img-block .year-badge {
  font-size: 4.5rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -.05em;
  line-height: 1;
}

.about-img-block .year-label {
  font-size: .8rem;
  font-family: var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.tl-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.tl-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  margin-top: .45rem;
  box-shadow: 0 0 12px rgba(14,165,233,.5);
}

.tl-content strong {
  display: block;
  color: #f0f9ff;
  font-weight: 600;
  font-size: .95rem;
  margin-bottom: .25rem;
}

.tl-content p {
  font-size: .88rem;
  color: var(--muted);
}

/* ── CONTACT ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 700px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: border-color .2s, transform .2s;
}

.contact-method:hover {
  border-color: var(--border-strong);
  transform: translateX(4px);
}

.contact-method .icon {
  font-size: 1.4rem;
  width: 42px;
  height: 42px;
  background: var(--accent-dim);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-method .detail strong {
  display: block;
  font-size: .82rem;
  font-family: var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .2rem;
}

.contact-method .detail span {
  color: var(--text);
  font-size: .95rem;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem;
}

.contact-form h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #f0f9ff;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.1rem;
}

.form-group label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: .4rem;
  letter-spacing: .02em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: .7rem 1rem;
  color: var(--text);
  font-family: var(--font);
  font-size: .95rem;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14,165,233,.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

/* ── FOOTER ── */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--muted);
  font-size: .88rem;
  transition: color .2s;
}

.footer-links a:hover { color: var(--text); }

.footer-copy {
  color: var(--muted);
  font-size: .82rem;
  width: 100%;
  text-align: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  margin-top: .5rem;
}

/* ── BLOG LIST ── */
.blog-list {
  margin-top: 2rem;
}

.blog-post-item {
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--border);
}

.blog-post-item:first-child { border-top: 1px solid var(--border); }

.blog-item-meta {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: .85rem;
  font-size: .78rem;
  color: var(--muted);
  font-family: var(--mono);
  flex-wrap: wrap;
}

.meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--muted);
  flex-shrink: 0;
}

.blog-item-title {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  color: #f0f9ff;
  letter-spacing: -.03em;
  line-height: 1.25;
  margin-bottom: .75rem;
  text-decoration: none;
  transition: color .2s;
}

.blog-item-title:hover { color: var(--accent); }

.blog-item-excerpt {
  font-size: .97rem;
  color: var(--text);
  line-height: 1.75;
  margin-bottom: 1.25rem;
  max-width: 680px;
  opacity: .85;
}

.blog-item-footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.read-more {
  font-size: .82rem;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--mono);
  white-space: nowrap;
  text-decoration: none;
  transition: color .2s;
}

.read-more:hover { color: #38bdf8; }

/* Home page blog preview — keep card layout but make it readable */
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color .2s, box-shadow .2s, transform .2s;
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.blog-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 8px 32px rgba(14,165,233,.1);
  transform: translateY(-2px);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: .85rem;
  font-size: .78rem;
  color: var(--muted);
  font-family: var(--mono);
  flex-wrap: wrap;
}

.blog-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #f0f9ff;
  letter-spacing: -.02em;
  line-height: 1.35;
  margin-bottom: .75rem;
  transition: color .2s;
}

.blog-card:hover .blog-card-title { color: var(--accent); }

.blog-card-excerpt {
  font-size: .92rem;
  color: var(--text);
  opacity: .82;
  line-height: 1.7;
  flex: 1;
  margin-bottom: 1.25rem;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  margin-top: auto;
  flex-wrap: wrap;
}

/* ── ARTICLE ── */
.article-hero {
  padding: 5rem 1.5rem 3.5rem;
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  font-size: .8rem;
  color: var(--muted);
  font-family: var(--mono);
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.article-hero h1 {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.04em;
  color: #f0f9ff;
  margin-bottom: 1.25rem;
}

.article-lead {
  font-size: 1.08rem;
  color: var(--muted);
  line-height: 1.75;
  max-width: 620px;
  margin: 0 auto;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.article-back {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 0;
}

.article-back a {
  font-size: .85rem;
  font-family: var(--mono);
  color: var(--muted);
  transition: color .2s;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}

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

/* Prose body */
.prose {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
}

.prose h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #f0f9ff;
  letter-spacing: -.03em;
  margin: 2.75rem 0 .75rem;
  line-height: 1.25;
}

.prose h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #f0f9ff;
  margin: 2rem 0 .6rem;
}

.prose p {
  color: var(--text);
  line-height: 1.85;
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

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

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose ul, .prose ol {
  color: var(--text);
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.prose li {
  margin-bottom: .5rem;
  line-height: 1.75;
  font-size: 1rem;
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: .75rem 1.25rem;
  margin: 2rem 0;
  background: var(--accent-glow);
  border-radius: 0 8px 8px 0;
}

.prose blockquote p {
  color: var(--text);
  font-style: italic;
  margin: 0;
}

.prose code {
  font-family: var(--mono);
  font-size: .85em;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: .15em .45em;
  border-radius: 4px;
  color: var(--accent);
}

.prose pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: .88rem;
  color: var(--text);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.75rem 0;
}

.prose .callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}

.prose .callout p { margin: 0; }

.article-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.article-footer a.btn { font-size: .88rem; }

/* Home blog preview cards */
.home-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  .nav-links { gap: 1.2rem; }
  .nav-links a { font-size: .82rem; }
  .hero { padding: 4rem 1.25rem 3.5rem; }
  section { padding: 3.5rem 1.25rem; }
  .blog-teaser { padding: 2.25rem 1.5rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .article-hero { padding: 3.5rem 1.25rem 2.5rem; }
  .prose { padding: 1.5rem 1.25rem 4rem; }
  .home-posts-grid { grid-template-columns: 1fr; }
  .blog-item-title { font-size: 1.15rem; }
}