/* ── NullPointer blog — shared styles (mirrors index.html design tokens) ── */

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

:root {
  --navy: #2d2b55;
  --navy-deep: #1a1840;
  --navy-dark: #13112e;
  --green: #5bf29b;
  --green-dim: rgba(91, 242, 155, 0.15);
  --green-glow: rgba(91, 242, 155, 0.4);
  --purple: #7b78ff;
  --purple-dim: rgba(123, 120, 255, 0.15);
  --purple-glow: rgba(123, 120, 255, 0.4);
  --white: #e8e6f0;
  --white-bright: #ffffff;
  --muted: #9b98b8;
  --border: rgba(123, 120, 255, 0.12);
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--purple) var(--navy-dark);
}

body {
  font-family: 'Outfit', sans-serif;
  background: var(--navy-dark);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Scanline background texture ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(91, 242, 155, 0.008) 2px,
    rgba(91, 242, 155, 0.008) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ── Navigation ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(19, 17, 46, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

nav.scrolled {
  padding: 0.6rem 2rem;
  background: rgba(19, 17, 46, 0.95);
}

/* On blog pages the logo is always visible (no hero logo above the fold) */
.nav-logo { height: 32px; }

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

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--green);
  transition: width 0.3s ease;
}

.nav-links a:hover { color: var(--green); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--green); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-star {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  color: var(--white-bright);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background:
    linear-gradient(var(--navy-deep), var(--navy-deep)) padding-box,
    linear-gradient(120deg, var(--green), var(--purple)) border-box;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.3s ease;
}

.nav-star::after {
  content: '';
  position: absolute;
  top: 0;
  left: -60%;
  width: 45%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.14), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}

.nav-star:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(123, 120, 255, 0.3), 0 0 18px rgba(91, 242, 155, 0.18);
}

.nav-star:hover::after { left: 120%; }

.nav-star svg {
  width: 15px;
  height: 15px;
  color: #ffd76b;
  filter: drop-shadow(0 0 5px rgba(255, 199, 89, 0.55));
  transition: transform 0.3s ease;
}

.nav-star:hover svg { transform: rotate(-8deg) scale(1.15); }

@media (prefers-reduced-motion: reduce) {
  .nav-star::after { display: none; }
  .nav-star:hover svg { transform: none; }
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* ── Shared ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--green);
}

.section-title {
  font-family: 'Chakra Petch', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--white-bright);
}

.section-subtitle {
  max-width: 670px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

/* ── Reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── Blog index ── */
.blog-header {
  padding: 9rem 0 3rem;
}

.post-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
  padding-bottom: 5rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  background: var(--navy-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.post-card:hover {
  border-color: var(--purple);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(123, 120, 255, 0.08);
}

/* Cover image / illustration on top of each card */
.post-card-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-deep) 60%, var(--navy-dark) 100%);
  border-bottom: 1px solid var(--border);
}

.post-card-cover img,
.post-card-cover svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.post-card:hover .post-card-cover img,
.post-card:hover .post-card-cover svg {
  transform: scale(1.05);
}

.post-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.5rem 1.75rem 1.75rem;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.post-card-date {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.post-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  background: var(--green-dim);
  color: var(--green);
}

.post-tag.tag-purple {
  background: var(--purple-dim);
  color: var(--purple);
}

.post-card h2 {
  font-family: 'Chakra Petch', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white-bright);
  margin-bottom: 0.6rem;
  transition: color 0.3s ease;
}

.post-card:hover h2 { color: var(--green); }

.post-card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.post-card-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 1.25rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--green);
}

/* ── Article page ── */
.article {
  max-width: 760px;
  margin: 0 auto;
  padding: 9rem 2rem 5rem;
}

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 2.5rem;
  transition: color 0.3s ease;
}

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

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.article h1 {
  font-family: 'Chakra Petch', sans-serif;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--white-bright);
  margin-bottom: 1rem;
}

.article-lede {
  font-size: 1.1rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.article-body h2 {
  font-family: 'Chakra Petch', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white-bright);
  margin: 2.5rem 0 1rem;
}

.article-body h3 {
  font-family: 'Chakra Petch', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white-bright);
  margin: 2rem 0 0.75rem;
}

.article-body p {
  color: var(--white);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.article-body a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(91, 242, 155, 0.3);
  transition: border-color 0.3s ease;
}

.article-body a:hover { border-color: var(--green); }

.article-body ul,
.article-body ol {
  margin: 0 0 1.25rem 1.5rem;
  color: var(--white);
}

.article-body li { margin-bottom: 0.5rem; line-height: 1.8; }

.article-body strong { color: var(--white-bright); }

.article-body code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85em;
  background: var(--navy-deep);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.15em 0.4em;
  color: var(--green);
}

.article-body pre {
  background: var(--navy-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.article-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--white);
}

.article-body blockquote {
  border-left: 2px solid var(--purple);
  padding: 0.25rem 0 0.25rem 1.25rem;
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-style: italic;
}

.article-body img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin: 0.5rem 0 1.5rem;
}

.article-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

/* ── Footer ── */
footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-logo {
  height: 28px;
  opacity: 0.5;
  margin-bottom: 1rem;
}

footer p {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ── Mobile ── */
@media (max-width: 640px) {
  nav { padding: 0.75rem 1rem; }

  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(19, 17, 46, 0.97);
    padding: 1.5rem 2rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--border);
  }

  .nav-toggle { display: block; }
  .nav-logo { height: 24px; }
  .nav-right { gap: 0.85rem; }
  .nav-star { font-size: 0.72rem; padding: 0.45rem 0.8rem; }

  .container { padding: 0 1.25rem; }

  .blog-header { padding: 7rem 0 2rem; }
  .post-card-body { padding: 1.25rem 1.5rem 1.5rem; }
  .article { padding: 7rem 1.25rem 3rem; }
}


/* ── Projects dropdown ── */
.nav-dd { position: relative; }
.nav-caret { font-size: 0.7em; opacity: 0.7; transition: transform 0.25s ease; display: inline-block; }
.nav-dd:hover .nav-caret { transform: rotate(180deg); }
.nav-dd-menu { list-style:none; position:absolute; top:100%; left:50%; transform:translateX(-50%) translateY(8px); min-width:170px; margin-top:6px; padding:0.4rem; display:flex; flex-direction:column; gap:0.1rem; background:rgba(19,17,46,0.97); backdrop-filter:blur(20px); border:1px solid var(--border); border-radius:8px; box-shadow:0 14px 34px rgba(0,0,0,0.4); opacity:0; visibility:hidden; transition:opacity 0.2s ease, transform 0.2s ease; z-index:1001; }
.nav-dd:hover .nav-dd-menu, .nav-dd:focus-within .nav-dd-menu { opacity:1; visibility:visible; transform:translateX(-50%) translateY(0); }
.nav-dd-menu a { display:block; padding:0.5rem 0.75rem; border-radius:5px; font-size:0.8rem; letter-spacing:0; text-transform:none; white-space:nowrap; color:var(--white); }
.nav-dd-menu a::after { display:none; }
.nav-dd-menu a:hover { background:var(--green-dim); color:var(--green); }
@media (max-width:640px){
  .nav-dd-menu { position:static; transform:none; opacity:1; visibility:visible; margin:0.25rem 0 0.25rem 1rem; padding:0; min-width:0; background:transparent; border:none; box-shadow:none; backdrop-filter:none; }
  .nav-caret { display:none; }
}


/* ── Dropdown hover-bridge fix (prevents the menu closing in the gap) ── */
.nav-dd::before { content: ''; position: absolute; top: 100%; left: 50%; transform: translateX(-50%); width: 210px; height: 14px; }
@media (max-width: 640px) { .nav-dd::before { display: none; } .nav-dd-menu { margin-top: 0.25rem; } }