/* ============================================================
   RICH BLOG — Dark Theme
   ============================================================ */

:root {
  --navy:        #0a192f;
  --navy-light:  #112240;
  --navy-lighter:#233554;
  --slate:       #8892b0;
  --slate-light: #a8b2d8;
  --white:       #ccd6f6;
  --white-bright:#e6f1ff;
  --mint:        #64ffda;
  --mint-tint:   rgba(100,255,218,.10);
  --mint-tint2:  rgba(100,255,218,.05);
  --border:      rgba(100,255,218,.10);
  --shadow:      0 8px 32px -8px rgba(0,0,0,.5);
  --shadow-md:   0 16px 48px -12px rgba(0,0,0,.6);
  --radius:      4px;
  --radius-md:   8px;
  --font-mono:   'JetBrains Mono', 'SF Mono', 'Fira Code', 'Fira Mono', monospace;
  --transition:  all .25s cubic-bezier(.645,.045,.355,1);
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--navy);
  color: var(--slate);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: rgba(100,255,218,.20); color: #0a192f; }

a { color: var(--mint); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--mint); opacity: .85; }

h1,h2,h3,h4,h5,h6 {
  color: var(--white-bright);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
}

/* ── Reading Progress ─────────────────────────────────────── */
#reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: linear-gradient(90deg, #64ffda, #00b4d8);
  z-index: 9999;
  width: 0%;
  transition: width .05s linear;
}

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
  background: rgba(10,25,47,.95) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border) !important;
  box-shadow: none !important;
  transition: var(--transition);
  padding: .75rem 0;
}

.navbar-brand {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--mint) !important;
  letter-spacing: .02em;
}
.navbar-brand span { color: var(--slate); }

.nav-link {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--slate-light) !important;
  font-weight: 400;
  padding: .4rem .75rem !important;
  border-radius: var(--radius);
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--mint) !important;
  background: var(--mint-tint);
}

.navbar-toggler {
  border: 1px solid var(--border) !important;
}
.navbar-toggler-icon {
  filter: invert(1) brightness(.6);
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 0;
  position: relative;
}

.hero-overline {
  font-family: var(--font-mono);
  font-size: .95rem;
  color: var(--mint);
  font-weight: 400;
  letter-spacing: .05em;
  margin-bottom: 1.25rem;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  color: var(--white-bright);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.1;
  margin-bottom: .5rem;
}

.hero-tagline {
  font-size: clamp(1.8rem, 4.5vw, 3.2rem);
  color: var(--slate);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-bio {
  max-width: 520px;
  color: var(--slate);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.hero-bio .highlight {
  color: var(--mint);
  font-weight: 500;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn-mint {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--mint);
  background: transparent;
  border: 1px solid var(--mint);
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  transition: var(--transition);
  font-weight: 400;
  letter-spacing: .05em;
}
.btn-mint:hover {
  background: var(--mint-tint);
  color: var(--mint);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(100,255,218,.15);
}

.btn-outline-mint {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--slate-light);
  background: transparent;
  border: 1px solid var(--border);
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  transition: var(--transition);
}
.btn-outline-mint:hover {
  border-color: var(--mint);
  color: var(--mint);
  background: var(--mint-tint);
  transform: translateY(-2px);
}

/* ── Section Labels ───────────────────────────────────────── */
.section-label {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--mint);
  letter-spacing: .08em;
  font-weight: 400;
}

.section-title {
  color: var(--white-bright);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -.03em;
  display: flex;
  align-items: center;
  gap: 1rem;
  white-space: nowrap;
}
.section-title::before {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--mint);
  font-weight: 400;
  content: attr(data-num) ".";
}
.section-title::after {
  content: '';
  display: block;
  height: 1px;
  width: 200px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── Avatar ───────────────────────────────────────────────── */
.avatar-wrapper {
  position: relative;
  display: inline-block;
}
.avatar-wrapper::after {
  content: '';
  position: absolute;
  top: 16px; left: 16px;
  width: 100%; height: 100%;
  border: 2px solid var(--mint);
  border-radius: var(--radius-md);
  z-index: -1;
  transition: var(--transition);
}
.avatar-wrapper:hover::after {
  top: 8px; left: 8px;
}
.avatar-wrapper img {
  display: block;
  border-radius: var(--radius-md);
  filter: grayscale(30%) contrast(1.05);
  transition: var(--transition);
}
.avatar-wrapper:hover img {
  filter: none;
}
.avatar-overlay {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background: rgba(100,255,218,.08);
  mix-blend-mode: multiply;
  transition: var(--transition);
}
.avatar-wrapper:hover .avatar-overlay { opacity: 0; }

/* Avatar placeholder */
.avatar-placeholder {
  width: 260px; height: 280px;
  background: var(--navy-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  color: var(--mint);
  border: 1px solid var(--border);
}

/* ── Social Links (Sidebar fixed) ────────────────────────── */
.social-sidebar {
  position: fixed;
  bottom: 0;
  left: 2.5rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.social-sidebar::after {
  content: '';
  display: block;
  width: 1px;
  height: 80px;
  background: var(--slate);
  margin: 0 auto;
}
.social-sidebar a {
  color: var(--slate);
  font-size: 1.15rem;
  transition: var(--transition);
  line-height: 1;
}
.social-sidebar a:hover {
  color: var(--mint);
  transform: translateY(-3px);
}

.email-sidebar {
  position: fixed;
  bottom: 0;
  right: 2.5rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.email-sidebar::after {
  content: '';
  display: block;
  width: 1px;
  height: 80px;
  background: var(--slate);
  margin: 0 auto;
}
.email-sidebar a {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--slate);
  letter-spacing: .12em;
  writing-mode: vertical-rl;
  transition: var(--transition);
}
.email-sidebar a:hover {
  color: var(--mint);
  transform: translateY(-4px);
}

/* ── About Section ────────────────────────────────────────── */
.about-text {
  color: var(--slate);
  font-size: 1rem;
  line-height: 1.8;
}
.about-text .highlight { color: var(--mint); }

.skill-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .3rem;
}
.skill-list li {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--slate);
  padding-left: 1.2rem;
  position: relative;
}
.skill-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--mint);
  font-size: .7rem;
}

/* ── Stats ────────────────────────────────────────────────── */
.stat-card {
  text-align: center;
  padding: 1.5rem;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.stat-card:hover { border-color: var(--mint); transform: translateY(-4px); }
.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--mint);
  font-family: var(--font-mono);
  line-height: 1;
}
.stat-label { color: var(--slate); font-size: .82rem; font-family: var(--font-mono); }

/* ── Skill Chips ──────────────────────────────────────────── */
.skill-chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem .85rem;
  background: var(--mint-tint2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--slate-light);
  transition: var(--transition);
}
.skill-chip:hover {
  background: var(--mint-tint);
  border-color: var(--mint);
  color: var(--mint);
  transform: translateY(-2px);
}

/* ── Project Cards ────────────────────────────────────────── */
.project-card {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--mint), transparent);
  opacity: 0;
  transition: var(--transition);
}
.project-card:hover {
  border-color: var(--mint);
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}
.project-card:hover::before { opacity: 1; }

.project-icon {
  font-size: 2rem;
  color: var(--mint);
  margin-bottom: 1.25rem;
}
.project-card .card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white-bright);
  margin-bottom: .75rem;
}
.project-card .card-text {
  font-size: .9rem;
  color: var(--slate);
  line-height: 1.7;
  flex: 1;
}
.project-card .card-img-top {
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  border: 1px solid var(--border);
}
.project-links { margin-top: auto; padding-top: 1.25rem; }
.project-links a {
  color: var(--slate);
  font-size: 1.1rem;
  margin-right: .75rem;
  transition: var(--transition);
}
.project-links a:hover { color: var(--mint); transform: translateY(-2px); }

/* Tech tags in projects */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: .75rem 0;
}
.tech-tag {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--mint);
  background: var(--mint-tint2);
  padding: .15rem .6rem;
  border-radius: var(--radius);
  border: 1px solid rgba(100,255,218,.2);
}

/* ── Blog / Post Cards ────────────────────────────────────── */
.post-card {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
}
.post-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--mint), transparent);
  opacity: 0;
  transition: var(--transition);
}
.post-card:hover {
  border-color: var(--mint);
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}
.post-card:hover::before { opacity: 1; }

.post-thumb {
  height: 180px;
  object-fit: cover;
  width: 100%;
  border-bottom: 1px solid var(--border);
  filter: grayscale(20%);
  transition: var(--transition);
}
.post-card:hover .post-thumb { filter: none; }

.post-thumb-placeholder {
  height: 180px;
  background: var(--navy-lighter);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--mint);
  border-bottom: 1px solid var(--border);
}

.post-card .card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.post-card .card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white-bright);
  line-height: 1.4;
  margin-bottom: .5rem;
}
.post-card .card-title a { color: var(--white-bright); }
.post-card .card-title a:hover { color: var(--mint); }
.post-card .card-text {
  font-size: .87rem;
  color: var(--slate);
  line-height: 1.7;
  flex: 1;
}

.post-meta {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--slate);
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
}

/* ── Series badge on post cards ─────────────────────────── */
.post-series-badge {
  margin-bottom: .5rem;
}
.post-series-badge a {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--mint);
  text-decoration: none;
  opacity: .8;
  transition: opacity .2s;
}
.post-series-badge a:hover { opacity: 1; }

/* ── Category Badge ───────────────────────────────────────── */
.category-badge {
  font-family: var(--font-mono);
  font-size: .72rem;
  padding: .2rem .65rem;
  border-radius: var(--radius);
  color: var(--slate-light);
  background: transparent;
  border: 1px solid var(--border);
  display: inline-block;
  white-space: nowrap;
  letter-spacing: .04em;
}

/* ── Tag Pills ────────────────────────────────────────────── */
.tag-pill {
  font-family: var(--font-mono);
  font-size: .75rem;
  padding: .2rem .65rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--slate);
  transition: var(--transition);
  display: inline-block;
}
.tag-pill:hover, .tag-pill.active {
  border-color: var(--mint);
  color: var(--mint);
  background: var(--mint-tint);
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar-section {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.sidebar-section h6 {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}

.category-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .4rem .6rem;
  border-radius: var(--radius);
  color: var(--slate);
  font-size: .88rem;
  transition: var(--transition);
  border-left: 2px solid transparent;
}
.category-link:hover, .category-link.active {
  color: var(--mint);
  border-left-color: var(--mint);
  background: var(--mint-tint);
  padding-left: .9rem;
}

/* ── Blog Hero ────────────────────────────────────────────── */
.blog-hero {
  padding: 60px 0 36px;
  border-bottom: 1px solid var(--border);
}
.blog-hero h1 { color: var(--white-bright); }

/* ── Article Reader ───────────────────────────────────────── */
.article-cover {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  filter: grayscale(10%);
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--slate);
  overflow-wrap: break-word;
  word-break: break-word;
}
.article-content h2, .article-content h3, .article-content h4 {
  color: var(--white-bright);
  scroll-margin-top: 80px;
}
.article-content h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: .75rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--border);
}
.article-content h3 { font-size: 1.2rem; margin-top: 2rem; margin-bottom: .6rem; }
.article-content h4 { font-size: 1rem; margin-top: 1.5rem; }

.article-content a { color: var(--mint); }
.article-content a:hover { text-decoration: underline; }

.article-content p { margin-bottom: 1.2rem; color: var(--slate); }

.article-content blockquote {
  border-left: 3px solid var(--mint);
  padding: .75rem 1.5rem;
  margin: 1.75rem 0;
  background: var(--navy-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--slate-light);
  font-style: italic;
}

.article-content pre {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  overflow-x: auto;
  max-width: 100%;
  margin: 1.5rem 0;
  font-size: .87rem;
  font-family: var(--font-mono);
  color: var(--slate-light);
  line-height: 1.75;
}
.article-content .highlight {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin: 1.5rem 0;
  overflow-x: auto;
  max-width: 100%;
}
.article-content .highlight pre {
  background: transparent;
  border: none;
  margin: 0;
  padding: 1.5rem;
  font-size: .87rem;
  font-family: var(--font-mono);
  line-height: 1.75;
}
.article-content code:not(pre code) {
  font-family: var(--font-mono);
  font-size: .85em;
  color: var(--mint);
  background: var(--mint-tint2);
  border: 1px solid var(--border);
  padding: .15em .45em;
  border-radius: var(--radius);
}

.article-content img {
  max-width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin: 1.5rem auto;
  display: block;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .9rem;
}
.article-content th {
  background: var(--navy-light);
  color: var(--white-bright);
  font-weight: 600;
  padding: .6rem 1rem;
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: .82rem;
}
.article-content td {
  padding: .55rem 1rem;
  border: 1px solid var(--border);
  color: var(--slate);
}
.article-content tr:hover td { background: var(--mint-tint2); }

.article-content ul, .article-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.2rem;
  color: var(--slate);
}
.article-content li { margin-bottom: .3rem; }
.article-content li::marker { color: var(--mint); }

/* ── TOC ──────────────────────────────────────────────────── */
.toc-box {
  position: sticky;
  top: 80px;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}
.toc-box h6 {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--mint);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .75rem;
  font-weight: 400;
}
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-list a {
  display: block;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--slate);
  padding: .3rem .6rem;
  border-left: 2px solid transparent;
  transition: var(--transition);
  line-height: 1.4;
}
.toc-list a:hover { color: var(--mint); }
.toc-list a.toc-active {
  color: var(--mint);
  border-left-color: var(--mint);
  background: var(--mint-tint);
  padding-left: .9rem;
}
.toc-h3 { padding-left: 1.1rem !important; }
.toc-h4 { padding-left: 1.8rem !important; }

/* ── Related Posts ────────────────────────────────────────── */
.related-card {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  padding: .75rem;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.related-card:hover { border-color: var(--mint); }
.related-card img {
  width: 64px; height: 52px;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
  filter: grayscale(20%);
}
.related-card .related-title {
  font-size: .85rem;
  font-weight: 600;
  color: var(--white-bright);
  line-height: 1.3;
}
.related-card:hover .related-title { color: var(--mint); }
.related-card small { font-family: var(--font-mono); font-size: .72rem; color: var(--slate); }

/* ── Pagination ───────────────────────────────────────────── */
.pagination .page-link {
  font-family: var(--font-mono);
  font-size: .82rem;
  background: transparent;
  border-color: var(--border);
  color: var(--slate);
  border-radius: var(--radius) !important;
  margin: 0 2px;
  transition: var(--transition);
}
.pagination .page-link:hover { border-color: var(--mint); color: var(--mint); background: var(--mint-tint); }
.pagination .page-item.active .page-link { background: var(--mint-tint); border-color: var(--mint); color: var(--mint); }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  background: var(--navy);
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  text-align: center;
}
.site-footer p {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--slate);
}
.site-footer a { color: var(--mint); }

/* ── Contact Section ──────────────────────────────────────── */
.contact-section {
  text-align: center;
  padding: 4rem 2rem;
}
.contact-section .contact-overline {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--mint);
}
.contact-section h2 { color: var(--white-bright); font-size: clamp(2rem, 5vw, 3rem); }
.contact-section p { color: var(--slate); max-width: 480px; margin: 1rem auto 2rem; }

/* ── Series sidebar ──────────────────────────────────────── */
.series-card-active {
  border-color: #fbbf24;
  border-left: 4px solid #fbbf24;
  background: rgba(251, 191, 36, .10);
  cursor: default;
}
.series-card-active .related-title { color: #fbbf24; font-weight: 700; }
.series-card-active small {
  color: #fbbf24 !important;
  font-weight: 700;
  letter-spacing: .03em;
}

/* ── Divider ──────────────────────────────────────────────── */
.divider-line {
  height: 1px;
  background: var(--border);
  margin: 4rem 0;
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--navy); }
::-webkit-scrollbar-thumb { background: var(--navy-lighter); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--slate); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .social-sidebar, .email-sidebar { display: none; }
}
@media (max-width: 768px) {
  .hero-section { min-height: auto; padding: 100px 0 60px; }
  .article-cover { height: 220px; }
  .toc-box { display: none; }
  .section-title::after { width: 80px; }
}

/* ── Utilities ────────────────────────────────────────────── */
.text-mint { color: var(--mint); }
.text-slate { color: var(--slate); }
.text-white-bright { color: var(--white-bright); }
.bg-navy-light { background: var(--navy-light); }
.border-mint { border-color: var(--mint) !important; }
.font-mono { font-family: var(--font-mono); }

/* ============================================================
   PORTFOLIO HOME — Two-column fixed layout
   (Inspired by brittanychiang.com)
   ============================================================ */

/* ── Outer wrapper ────────────────────────────────────────── */
.pf-layout {
  min-height: 100vh;
}

/* ── Entry animation ───────────────────────────────────────── */
@keyframes pf-fade-in-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.pf-header .pf-name,
.pf-header .pf-title,
.pf-header .pf-tagline,
.pf-header .pf-nav,
.pf-social,
.pf-right .pf-section {
  opacity: 0;
  animation: pf-fade-in-up .6s ease-out forwards;
}
.pf-header .pf-name     { animation-delay: .05s; }
.pf-header .pf-title    { animation-delay: .15s; }
.pf-header .pf-tagline  { animation-delay: .25s; }
.pf-header .pf-nav      { animation-delay: .35s; }
.pf-social              { animation-delay: .45s; }
.pf-right .pf-section   { animation-delay: .3s; }

/* ── LEFT PANEL (fixed, 45vw) ─────────────────────────────── */
/*
 * Split: 45vw fixed left / 55vw scrollable right.
 * padding-left scales with viewport so the name sits ~18-20%
 * from the left edge — same visual rhythm as brittanychiang.com.
 */
.pf-left {
  position: fixed;
  top: 60px; left: 0;
  width: 29vw;
  height: calc(100vh - 60px);
  display: flex;
  align-items: flex-start;
  padding-left: clamp(3rem, 12vw, 12rem);
  padding-right: 1.5rem;
}

.pf-left-inner {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 6rem 0 4rem;
  width: 100%;
  max-width: 360px;
  height: 100%;
}

/* Name */
.pf-name {
  font-size: clamp(2.4rem, 3.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.1;
  margin-bottom: .4rem;
}
.pf-name a {
  color: var(--white-bright);
}
.pf-name a:hover { color: var(--mint); }

/* Title */
.pf-title {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  color: var(--slate-light);
  letter-spacing: -.01em;
  margin-bottom: 1rem;
}

/* Tagline */
.pf-tagline {
  font-size: .95rem;
  color: var(--slate);
  line-height: 1.6;
  max-width: 340px;
  margin-bottom: 0;
}

/* ── Side Nav ─────────────────────────────────────────────── */
.pf-nav {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: .15rem;
}

.pf-nav-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .45rem 0;
  text-decoration: none;
  transition: var(--transition);
}

.pf-nav-line {
  display: block;
  height: 1px;
  width: 28px;
  background: var(--slate);
  transition: width .25s ease, background .25s ease;
  flex-shrink: 0;
}

.pf-nav-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--slate);
  transition: color .25s ease;
}

/* Active / hover state */
.pf-nav-item:hover .pf-nav-line,
.pf-nav-item.active .pf-nav-line {
  width: 56px;
  background: var(--white-bright);
}
.pf-nav-item:hover .pf-nav-label,
.pf-nav-item.active .pf-nav-label {
  color: var(--white-bright);
}

/* ── Social links (bottom of left panel) ─────────────────── */
.pf-social {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.pf-social a {
  font-size: 1.15rem;
  color: var(--slate);
  transition: var(--transition);
  line-height: 1;
}
.pf-social a:hover {
  color: var(--mint);
  transform: translateY(-3px);
}

/* ── RIGHT PANEL (scrollable) ─────────────────────────────── */
/* ── RIGHT PANEL (scrollable, starts at 45vw) ─────────────── */
/*
 * margin-left matches pf-left width exactly (both use 45vw).
 * padding-left 4.5rem → content starts at 45vw + 72px ≈ same
 * horizontal position as right column on brittanychiang.com.
 * max-width caps line length on very wide screens (>1600px).
 */
.pf-right {
  margin-left: 29vw;
  padding: 3rem 4rem 6rem 3rem;
  min-height: 100vh;
  max-width: min(74vw, 980px);
}

/* ── Section ──────────────────────────────────────────────── */
.pf-section {
  margin-bottom: 3.5rem;
  scroll-margin-top: 5rem;
}

.pf-section-divider {
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}

/* Section label — always visible, acts as small heading above content */
.pf-section-label {
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 2.5rem;
}

/* Mobile-only section header (sticky label) */
.pf-section-header { display: none; }
.pf-section-title {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--white-bright);
  padding: 1rem 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  display: none;
}

/* ── About prose ──────────────────────────────────────────── */
.pf-prose {
  color: var(--slate);
  font-size: 1rem;
  line-height: 1.8;
}
.pf-prose p { margin-bottom: 1rem; }
.pf-prose p:last-child { margin-bottom: 0; }
.pf-prose .text-mint { color: var(--mint); }

.pf-skills-intro {
  font-size: .78rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--mint);
  margin-bottom: 1rem;
}

.pf-skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.pf-skill-item {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--slate-light);
  background: rgba(100, 255, 218, 0.05);
  border: 1px solid rgba(100, 255, 218, 0.15);
  border-radius: 4px;
  padding: .3rem .75rem;
  display: flex;
  align-items: center;
  gap: .4rem;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
  cursor: default;
}
.pf-skill-item:hover {
  color: var(--mint);
  border-color: rgba(100, 255, 218, 0.4);
  background: rgba(100, 255, 218, 0.08);
}

.pf-arrow {
  color: var(--mint);
  font-style: normal;
  font-size: .65rem;
  display: inline-block;
  transition: transform .2s ease;
}
.pf-skill-item:hover .pf-arrow { transform: translateX(3px); }

/* ── Link with arrow ──────────────────────────────────────── */
.pf-link-arrow {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--white-bright);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  transition: var(--transition);
  letter-spacing: .02em;
}
.pf-link-arrow:hover { color: var(--mint); gap: .75rem; }
.pf-link-icon {
  font-style: normal;
  display: inline-block;
  transition: transform .2s ease;
  font-family: var(--font-mono);
}
.pf-link-arrow:hover .pf-link-icon,
h4 a:hover .pf-link-icon { transform: translate(3px, -3px); }

/* ── Experience ───────────────────────────────────────────── */
.pf-exp-list { display: flex; flex-direction: column; gap: 0; }

.pf-exp-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: var(--transition);
  cursor: default;
}
.pf-exp-item:hover {
  background: var(--navy-light);
  border-color: var(--border);
  box-shadow: var(--shadow);
}
.pf-exp-item:hover .pf-exp-title { color: var(--mint); }

.pf-exp-date {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: .06em;
  padding-top: .25rem;
  white-space: nowrap;
}

.pf-exp-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--white-bright);
  margin-bottom: .5rem;
  line-height: 1.4;
  transition: color .2s;
}
.pf-exp-company {
  color: var(--mint);
  font-weight: 500;
}
.pf-exp-company-plain { color: var(--mint); font-weight: 500; }

.pf-exp-desc {
  font-size: .88rem;
  color: var(--slate);
  line-height: 1.7;
  margin-bottom: .75rem;
}

/* ── Tags (shared: experience + projects + writing) ───────── */
.pf-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: .5rem;
}
.pf-tag {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--mint);
  background: var(--mint-tint);
  border: 1px solid rgba(100,255,218,.2);
  padding: .2rem .65rem;
  border-radius: 99px;
  white-space: nowrap;
  letter-spacing: .02em;
}

/* ── Projects (horizontal layout) ────────────────────────── */
.pf-proj-list { display: flex; flex-direction: column; gap: 0; }

.pf-proj-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.25rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: var(--transition);
}
.pf-proj-item:hover {
  background: var(--navy-light);
  border-color: var(--border);
  box-shadow: var(--shadow);
}
.pf-proj-item:hover .pf-proj-title a { color: var(--mint); }

.pf-proj-thumb {
  flex-shrink: 0;
}
.pf-proj-thumb img {
  width: 130px;
  height: 88px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
  filter: grayscale(20%);
  transition: filter .25s;
}
.pf-proj-item:hover .pf-proj-thumb img { filter: none; }

.pf-proj-thumb-placeholder {
  width: 130px;
  height: 88px;
  background: var(--navy-lighter);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--mint);
}

.pf-proj-title {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: .4rem;
  line-height: 1.4;
}
.pf-proj-title a { color: var(--white-bright); transition: color .2s; }

.pf-proj-desc {
  font-size: .85rem;
  color: var(--slate);
  line-height: 1.65;
  margin-bottom: .5rem;
}

.pf-repo-link {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--slate);
  transition: color .2s;
}
.pf-repo-link:hover { color: var(--mint); }

/* ── Writing / Blog posts (same horizontal layout) ────────── */
.pf-writing-list { display: flex; flex-direction: column; gap: 0; }

.pf-writing-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: var(--transition);
}
.pf-writing-item:hover {
  background: var(--navy-light);
  border-color: var(--border);
  box-shadow: var(--shadow);
}
.pf-writing-item:hover .pf-writing-title a { color: var(--mint); }

.pf-writing-thumb img {
  width: 150px;
  height: 100px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 2px solid var(--navy-lighter);
  display: block;
  filter: grayscale(30%) brightness(.85);
  transition: filter .3s, border-color .3s;
}
.pf-writing-link:hover .pf-writing-thumb img {
  filter: none;
  border-color: var(--mint);
}

.pf-writing-thumb-placeholder {
  width: 150px;
  height: 100px;
  background: var(--navy-lighter);
  border-radius: var(--radius-md);
  border: 2px solid var(--navy-lighter);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--mint);
  transition: border-color .3s;
}
.pf-writing-link:hover .pf-writing-thumb-placeholder {
  border-color: rgba(100,255,218,.3);
}

/* Make entire writing card a link */
.pf-writing-link {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}
.pf-writing-link:hover {
  background: var(--navy-light);
  border-color: var(--border);
  box-shadow: var(--shadow);
  color: inherit;
}
.pf-writing-link:hover .pf-writing-title { color: var(--mint); }
/* Override display:grid from .pf-writing-item when link is used */
.pf-writing-link.pf-writing-item { display: grid; }

.pf-writing-meta {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--slate);
  display: flex;
  gap: .75rem;
  margin-bottom: .5rem;
  align-items: center;
}
.pf-writing-cat { font-weight: 600; }

.pf-writing-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .5rem;
  line-height: 1.4;
  color: var(--white-bright);
}
.pf-writing-title a { color: var(--white-bright); transition: color .2s; }

.pf-writing-desc {
  font-size: .85rem;
  color: var(--slate);
  line-height: 1.6;
  margin-bottom: .5rem;
}

/* ── Empty state ──────────────────────────────────────────── */
.pf-empty {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--slate);
}

/* ── Cursor glow (portfolio page only) ───────────────────── */
/*
 * A large soft radial gradient follows the cursor across the
 * whole page — the signature ambient glow from brittanychiang.com.
 * Applied via JS custom property --cx / --cy on <html>.
 * Only visible when .pf-layout exists (portfolio home).
 */
.pf-cursor-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: radial-gradient(
    250px circle at var(--cx, -500px) var(--cy, -500px),
    rgba(100, 255, 218, 0.06),
    transparent 70%
  );
  transition: background .1s ease;
}

/* ── Hover Effects ────────────────────────────────────────── */

/* Prose links get mint underline on hover */
.pf-prose a {
  color: var(--white-bright);
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 3px;
  transition: color .2s, text-decoration-color .2s;
}
.pf-prose a:hover {
  color: var(--mint);
  text-decoration-color: var(--mint);
}

/*
 * Spotlight dim: when any writing card is hovered, all OTHER
 * cards in the list fade to 40% opacity — the signature Brittany
 * Chiang "focus lens" effect.
 */
.pf-writing-list:has(.pf-writing-link:hover) .pf-writing-link:not(:hover) {
  opacity: 0.4;
  transition: opacity .3s ease;
}
.pf-writing-list .pf-writing-link {
  transition: opacity .3s ease, background var(--transition),
              border-color var(--transition), box-shadow var(--transition);
}

/* Arrow lift: ↗ icon slides up-right on card hover */
.pf-writing-link .pf-writing-title .pf-link-icon {
  display: inline-block;
  transition: transform .2s ease;
}
.pf-writing-link:hover .pf-writing-title .pf-link-icon {
  transform: translate(3px, -3px);
}

/* Writing title color on hover */
.pf-writing-link:hover .pf-writing-title {
  color: var(--mint);
}
.pf-writing-title {
  transition: color .2s ease;
}

/* Tag subtle scale on hover */
.pf-tag {
  transition: background .2s, border-color .2s, color .2s;
}
.pf-writing-link:hover .pf-tag,
.pf-tag:hover {
  background: rgba(100, 255, 218, .12);
  border-color: rgba(100, 255, 218, .35);
}

/* Section label glow when section is in view (via JS .is-active class) */
.pf-section.is-active .pf-section-label {
  color: var(--mint);
  transition: color .3s ease;
}

/* ── Footer inside right panel ────────────────────────────── */
.pf-footer {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  margin-top: 4rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--slate);
}
.pf-footer a { color: var(--mint); }

/* ── Tablet / Mobile: single-column stack ─────────────────── */
@media (max-width: 1100px) {
  .pf-left {
    position: relative;
    top: 0;
    width: 100%;
    height: auto;
    padding: 4rem 2rem .25rem clamp(1.5rem, 5vw, 3rem);
  }
  .pf-left-inner {
    max-width: 100%;
    height: auto;
    padding: 0;
  }
  .pf-nav { display: none; }
  .pf-social { justify-content: flex-start; }

  .pf-right {
    margin-left: 0;
    max-width: 100%;
    padding: .25rem clamp(1.5rem, 5vw, 3rem) 4rem;
  }

  .pf-section { margin-bottom: 3.5rem; }
  .pf-section-header { display: block; }
  .pf-section-title { display: block; }

  .pf-exp-item { grid-template-columns: 1fr; gap: .4rem; }
  .pf-exp-date { padding-top: 0; }

  .pf-writing-item,
  .pf-writing-link { grid-template-columns: 110px 1fr !important; gap: 1rem; }
  .pf-writing-thumb img,
  .pf-writing-thumb-placeholder { width: 110px; height: 76px; }
}

@media (max-width: 560px) {
  .pf-writing-item,
  .pf-writing-link { grid-template-columns: 1fr !important; }
  .pf-writing-thumb { display: none; }
  .pf-skills-grid { gap: .4rem; }
}

/* ============================================================
   ARTICLE PAGE — Light background, dark crisp text
   Applied via body.article-page (post_detail.html)
   ============================================================ */

body.article-page {
  background: #ffffff;
  color: #1a1a1a;
}

/* Navbar — white with shadow */
body.article-page .navbar {
  background: rgba(255,255,255,.97) !important;
  border-bottom: 1px solid #e5e7eb !important;
  box-shadow: 0 1px 0 #e5e7eb !important;
}
body.article-page .navbar-brand { color: #111 !important; }
body.article-page .nav-link { color: #374151 !important; }
body.article-page .nav-link:hover,
body.article-page .nav-link.active { color: #111 !important; background: #f3f4f6; }

/* Breadcrumb & reading progress */
body.article-page #reading-progress {
  background: linear-gradient(90deg, #e91e8c, #f43f5e);
}

/* Article heading */
body.article-page h1,
body.article-page h2,
body.article-page h3,
body.article-page h4 {
  color: #111827;
}

/* Main article content */
body.article-page .article-content {
  color: #1f2937;
  font-size: 1.08rem;
  line-height: 1.9;
}
body.article-page .article-content p { color: #1f2937; }
body.article-page .article-content h2 {
  color: #111827;
  border-bottom-color: #e5e7eb;
}
body.article-page .article-content h3,
body.article-page .article-content h4 { color: #111827; }

body.article-page .article-content a { color: #e91e8c; }
body.article-page .article-content a:hover { color: #c2185b; }

body.article-page .article-content blockquote {
  border-left-color: #e91e8c;
  background: #fdf2f8;
  color: #374151;
}
body.article-page .article-content pre {
  background: #f8f9fa;
  border-color: #e5e7eb;
  color: #1f2937;
}
body.article-page .article-content .highlight {
  border-color: #e5e7eb;
}
body.article-page .article-content .highlight pre {
  background: transparent;
  color: inherit;
}
body.article-page .article-content code:not(pre code) {
  background: #fdf2f8;
  border-color: #fbcfe8;
  color: #be185d;
}
body.article-page .article-content th { background: #f9fafb; color: #111827; border-color: #e5e7eb; }
body.article-page .article-content td { border-color: #e5e7eb; color: #374151; }
body.article-page .article-content tr:hover td { background: #fdf2f8; }
body.article-page .article-content ul,
body.article-page .article-content ol { color: #1f2937; }
body.article-page .article-content li { color: #1f2937; }
body.article-page .article-content li::marker { color: #e91e8c; }

/* Excerpt lead */
body.article-page header p[style*="border-left"] {
  border-left-color: #e91e8c !important;
  color: #374151 !important;
  background: #fdf2f8;
  padding: 1rem 1.25rem;
  border-radius: 0 6px 6px 0;
}

/* TOC */
body.article-page .toc-box {
  background: #f9fafb;
  border-color: #e5e7eb;
}
body.article-page .toc-box h6 { color: #e91e8c; border-bottom-color: #e5e7eb; }
body.article-page .toc-list a { color: #6b7280; }
body.article-page .toc-list a:hover { color: #111827; }
body.article-page .toc-list a.toc-active {
  color: #e91e8c;
  border-left-color: #e91e8c;
  background: #fdf2f8;
}

/* Sidebar */
body.article-page .sidebar-section {
  background: #f9fafb;
  border-color: #e5e7eb;
}
body.article-page .sidebar-section h6 { color: #e91e8c; border-bottom-color: #e5e7eb; }
body.article-page .related-card {
  background: #ffffff;
  border-color: #e5e7eb;
}
body.article-page .related-card:hover { border-color: #e91e8c; }
body.article-page .related-title { color: #111827; }
body.article-page .related-card:hover .related-title { color: #e91e8c; }
body.article-page .related-card small { color: #6b7280; }
body.article-page .series-card-active {
  border-color: #d97706;
  border-left: 4px solid #d97706;
  background: rgba(217, 119, 6, .07);
}
body.article-page .series-card-active .related-title { color: #92400e; font-weight: 700; }
body.article-page .series-card-active small {
  color: #d97706 !important;
  font-weight: 700;
  letter-spacing: .03em;
}

/* Category badge & tags */
body.article-page .category-badge {
  background: #fdf2f8;
  border-color: #fbcfe8;
  color: #be185d;
}
body.article-page .tag-pill {
  border-color: #e5e7eb;
  color: #6b7280;
}
body.article-page .tag-pill:hover,
body.article-page .tag-pill.active {
  border-color: #e91e8c;
  color: #e91e8c;
  background: #fdf2f8;
}

/* Meta icons */
body.article-page .bi[style*="color:var(--mint)"] {
  color: #e91e8c !important;
}

/* Divider */
body.article-page .divider-line { background: #e5e7eb; }

/* Share buttons */
body.article-page .btn-outline-mint {
  border-color: #e5e7eb;
  color: #374151;
}
body.article-page .btn-outline-mint:hover {
  border-color: #e91e8c;
  color: #e91e8c;
  background: #fdf2f8;
}

/* Breadcrumb */
body.article-page .breadcrumb-item.active { color: #6b7280 !important; }

/* Scrollbar for light page */
body.article-page::-webkit-scrollbar-track { background: #f9fafb; }
body.article-page::-webkit-scrollbar-thumb { background: #d1d5db; }
body.article-page::-webkit-scrollbar-thumb:hover { background: #e91e8c; }

/* ── Article-page semantic classes (replaces all inline var() styles) ── */
.art-breadcrumb {
  font-family: var(--font-mono);
  font-size: .75rem;
  background: none;
  padding: 0;
}
.art-breadcrumb a { color: #e91e8c; text-decoration: none; }
.art-breadcrumb a:hover { color: #be185d; }
.art-breadcrumb .active { color: #9ca3af; }

.art-featured-badge {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: #be185d;
  border: 1px solid #fbcfe8;
  background: #fdf2f8;
  padding: .15rem .6rem;
  border-radius: 4px;
}

.art-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: #111827;
  letter-spacing: -.03em;
  line-height: 1.25;
  margin-bottom: 1rem;
  font-weight: 800;
}

.art-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: #6b7280;
  margin-bottom: 1.25rem;
  align-items: center;
}
.art-icon {
  color: #e91e8c;
  margin-right: .25rem;
}

.art-excerpt {
  font-size: 1.1rem;
  color: #374151;
  line-height: 1.8;
  border-left: 3px solid #e91e8c;
  background: #fdf2f8;
  padding: .9rem 1.25rem;
  border-radius: 0 6px 6px 0;
  margin-bottom: 2rem;
}

.art-share-label {
  font-family: var(--font-mono);
  font-size: .73rem;
  color: #e91e8c;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .75rem;
}
.art-share-btn {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: #374151;
  border: 1px solid #e5e7eb;
  background: #fff;
  padding: .45rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: border-color .2s, color .2s, background .2s;
  display: inline-flex;
  align-items: center;
}
.art-share-btn:hover {
  border-color: #e91e8c;
  color: #e91e8c;
  background: #fdf2f8;
}

/* ── Series prev/next navigation ──────────────────── */
.series-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2.5rem 0 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.series-nav-card {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  text-decoration: none;
  transition: border-color .2s, background .2s;
}
.series-nav-card:hover {
  border-color: #be185d;
  background: rgba(190,24,93,.06);
  text-decoration: none;
}
.series-nav-next { text-align: right; }
.series-nav-empty { }
.series-nav-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: #be185d;
  letter-spacing: .04em;
}
.series-nav-part {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--slate);
}
.series-nav-title {
  font-size: .88rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.35;
}
body.article-page .series-nav-card {
  background: rgba(0,0,0,.02);
  border-color: #e2e8f0;
}
body.article-page .series-nav-card:hover {
  border-color: #be185d;
  background: rgba(190,24,93,.06);
}
body.article-page .series-nav-title { color: #1e293b; }
body.article-page .series-nav-part { color: #64748b; }
@media (max-width: 576px) {
  .series-nav { grid-template-columns: 1fr; }
  .series-nav-next { text-align: left; }
}

.art-back-link {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: #e91e8c;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  transition: gap .2s;
}
.art-back-link:hover { color: #be185d; gap: .6rem; }

.art-rel-thumb {
  width: 64px; height: 52px;
  background: #f3f4f6;
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e91e8c;
  font-size: .9rem;
}

.art-author-name {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: #111827;
  margin-bottom: .2rem;
}
.art-author-role {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: #e91e8c;
  margin-bottom: 0;
}

/* ============================================================
   SITE FOOTER MEGA — Full-width footer below both panels
   ============================================================ */
.site-footer-mega {
  background: var(--navy-light);
  border-top: none;
  padding: 4rem 0 0;
  position: relative;
}

/* Wave: footer color (#112240) bleeds upward into body with a smooth curve */
.site-footer-mega::before {
  content: '';
  position: absolute;
  top: -50px; left: 0; width: 100%; height: 52px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 52' preserveAspectRatio='none'%3E%3Cpath d='M0%2C52 L0%2C26 C360%2C0 720%2C52 1080%2C26 C1260%2C13 1380%2C26 1440%2C26 L1440%2C52 Z' fill='%23112240'/%3E%3C/svg%3E");
  background-size: 100% 100%;
  pointer-events: none;
}

/* Article page: white body — wave is white, creating soft curve into dark footer */
body.article-page .site-footer-mega::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 52' preserveAspectRatio='none'%3E%3Cpath d='M0%2C52 L0%2C26 C360%2C0 720%2C52 1080%2C26 C1260%2C13 1380%2C26 1440%2C26 L1440%2C52 Z' fill='%23ffffff'/%3E%3C/svg%3E");
}

.sfm-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(2rem, 8vw, 8rem);
}
.sfm-col-wide { min-width: 0; }
.sfm-form { display: flex; flex-direction: column; gap: .5rem; }
.sfm-row { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.sfm-input {
  width: 100%;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: .5rem .75rem;
  font-size: .82rem;
  color: var(--white);
  outline: none;
  transition: border-color .15s;
  font-family: inherit;
}
.sfm-input::placeholder { color: var(--slate); }
.sfm-input:focus { border-color: var(--mint); }
.sfm-textarea { resize: vertical; min-height: 80px; }
.sfm-submit {
  align-self: flex-start;
  background: transparent;
  border: 1px solid var(--mint);
  color: var(--mint);
  padding: .4rem 1.2rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background .15s, color .15s;
  margin-top: .25rem;
}
.sfm-submit:hover { background: rgba(100,255,218,.1); }
.sfm-msg { font-size: .8rem; padding: .4rem .75rem; border-radius: 4px; margin-bottom: .25rem; }
.sfm-msg-ok { background: rgba(100,255,218,.1); color: var(--mint); }
.sfm-msg-err { background: rgba(220,53,69,.1); color: #f87171; }

.sfm-heading {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 1.25rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--border);
}

.sfm-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: .65rem;
}

.sfm-list a {
  font-size: .88rem;
  color: var(--slate);
  text-decoration: none;
  transition: color .2s;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}
.sfm-list a:hover { color: var(--mint); }

.sfm-all-link {
  font-family: var(--font-mono);
  font-size: .78rem !important;
  color: var(--mint) !important;
  margin-top: .25rem;
}

/* Bottom bar */
.sfm-bottom {
  margin-top: 3rem;
  padding: 1.25rem clamp(2rem, 8vw, 8rem);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 100%;
}

.sfm-copy {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--slate);
  opacity: .7;
}

.sfm-socials {
  display: flex;
  gap: 1.1rem;
  align-items: center;
}
.sfm-socials a {
  font-size: 1.05rem;
  color: var(--slate);
  transition: color .2s, transform .2s;
  line-height: 1;
}
.sfm-socials a:hover {
  color: var(--mint);
  transform: translateY(-2px);
}

@media (max-width: 1100px) {
  .sfm-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .sfm-col-wide { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .sfm-inner { grid-template-columns: 1fr; }
  .sfm-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

/* ============================================================
   AUTH / ACCOUNTS — login, verify OTP, upgrade, profile
   ============================================================ */

/* ── Navbar auth ──────────────────────────────────────────── */
.nav-login-btn {
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 400;
  color: var(--slate-light);
  text-decoration: none;
  padding: .4rem .75rem;
  transition: color .15s;
}
.nav-login-btn:hover { color: var(--mint); }

.nav-avatar-wrap { position: relative; }
.nav-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--mint);
  color: #0a0a0a;
  font-size: .82rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.nav-avatar-menu {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: #1e2030;
  border: 1px solid #2a2d3e;
  border-radius: 10px;
  min-width: 200px;
  padding: .5rem 0;
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
  z-index: 1000;
}
.nav-avatar-menu.open { display: block; }
.nav-avatar-email {
  padding: .5rem 1rem;
  font-size: .75rem;
  color: var(--slate);
  word-break: break-all;
}
.nav-avatar-tier {
  margin: 0 1rem .4rem;
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  padding: .15rem .5rem;
  border-radius: 4px;
  letter-spacing: .05em;
}
.tier-free { background: #2a2d3e; color: var(--slate); }
.tier-pro  { background: var(--mint); color: #0a0a0a; }
.nav-avatar-divider { height: 1px; background: #2a2d3e; margin: .4rem 0; }
.nav-avatar-item {
  display: block;
  padding: .45rem 1rem;
  font-size: .82rem;
  color: var(--text);
  text-decoration: none;
  transition: background .12s;
}
.nav-avatar-item:hover { background: #2a2d3e; color: var(--text); }
.nav-avatar-upgrade { color: var(--mint) !important; }
.nav-avatar-logout  { color: #e57373 !important; }

/* ── Auth card (login / verify) ──────────────────────────── */
.auth-card {
  background: #1a1c2a;
  border: 1px solid #2a2d3e;
  border-radius: 16px;
  padding: 2.5rem;
}
.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .5rem;
}
.auth-subtitle {
  font-size: .9rem;
  color: var(--slate);
  margin-bottom: 1.5rem;
}
.auth-error {
  background: #2d1a1a;
  border: 1px solid #e57373;
  color: #e57373;
  border-radius: 8px;
  padding: .75rem 1rem;
  font-size: .85rem;
  margin-bottom: 1.2rem;
}
.auth-form { display: flex; flex-direction: column; gap: .75rem; }
.auth-label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--slate);
  letter-spacing: .03em;
}
.auth-input {
  background: #12141f;
  border: 1px solid #2a2d3e;
  border-radius: 8px;
  padding: .65rem .9rem;
  font-size: .9rem;
  color: var(--text);
  width: 100%;
  transition: border-color .15s;
  box-sizing: border-box;
}
.auth-input:focus { outline: none; border-color: var(--mint); }
.auth-input:disabled { opacity: .5; cursor: not-allowed; }
.auth-input-code {
  font-size: 1.5rem;
  letter-spacing: .5rem;
  text-align: center;
  font-family: var(--font-mono);
}
.auth-btn-primary {
  background: var(--mint);
  color: #0a0a0a;
  border: none;
  border-radius: 8px;
  padding: .7rem 1.2rem;
  font-weight: 700;
  font-size: .9rem;
  cursor: pointer;
  transition: opacity .15s;
}
.auth-btn-primary:hover { opacity: .85; }
.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--slate);
  font-size: .8rem;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #2a2d3e;
}
.auth-note { font-size: .8rem; color: var(--slate); margin-top: 1rem; }
.auth-note a { color: var(--mint); text-decoration: none; }

/* ── Paywall ──────────────────────────────────────────────── */
.content-preview-wrap { position: relative; overflow: hidden; max-height: 500px; }
.paywall-fade {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 180px;
  background: linear-gradient(to bottom, transparent, #ffffff);
  pointer-events: none;
}
body:not(.article-page) .paywall-fade { background: linear-gradient(to bottom, transparent, #0e1016); }

.paywall-gate {
  text-align: center;
  padding: 2.5rem 1.5rem;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #f9fafb;
  margin-top: 1.5rem;
}
body:not(.article-page) .paywall-gate {
  border-color: #2a2d3e;
  background: #1a1c2a;
}
.paywall-msg {
  font-size: 1rem;
  color: #374151;
  margin-bottom: 1.2rem;
}
body:not(.article-page) .paywall-msg { color: var(--text); }
.paywall-btn-login, .paywall-btn-upgrade {
  display: inline-block;
  padding: .65rem 1.8rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: .9rem;
  text-decoration: none;
  transition: opacity .15s;
}
.paywall-btn-login  { background: #1e40af; color: #fff; }
.paywall-btn-upgrade { background: var(--mint); color: #0a0a0a; }
.paywall-btn-login:hover, .paywall-btn-upgrade:hover { opacity: .85; }

/* ── Upgrade page ─────────────────────────────────────────── */
.upgrade-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .5rem;
}
.upgrade-subtitle {
  font-size: .95rem;
  color: var(--slate);
  margin-bottom: 2.5rem;
}
.upgrade-pending {
  background: #1a2a1a;
  border: 1px solid var(--mint);
  border-radius: 10px;
  padding: 1.2rem 1.5rem;
  color: var(--text);
  font-size: .9rem;
  line-height: 1.7;
}
/* ── Billing toggle ──────────────────────────────────────── */
.billing-toggle-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  margin-bottom: 2rem;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .3rem;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}
.billing-toggle-btn {
  background: none;
  border: none;
  color: var(--slate);
  font-size: .85rem;
  font-family: var(--font-mono);
  padding: .45rem 1.1rem;
  border-radius: 7px;
  cursor: pointer;
  transition: background .2s, color .2s;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.billing-toggle-btn.active {
  background: var(--navy-lighter);
  color: var(--white-bright);
}
.billing-save-badge {
  font-size: .68rem;
  background: rgba(100,255,218,.15);
  color: var(--mint);
  padding: .1rem .45rem;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: .02em;
}
.billing-yearly-note {
  font-size: .78rem;
  color: var(--slate);
  margin-top: .35rem;
  font-family: var(--font-mono);
}

.upgrade-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 580px) { .upgrade-cards { grid-template-columns: 1fr; } }

.upgrade-card {
  background: #1a1c2a;
  border: 1px solid #2a2d3e;
  border-radius: 14px;
  padding: 1.8rem;
  position: relative;
}
.upgrade-card-pro {
  border-color: var(--mint);
  box-shadow: 0 0 0 1px var(--mint);
}
.upgrade-card-popular {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--mint);
  color: #0a0a0a;
  font-size: .7rem;
  font-weight: 700;
  padding: .2rem .75rem;
  border-radius: 20px;
  letter-spacing: .05em;
  white-space: nowrap;
}
.upgrade-card-name {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--slate);
}
.upgrade-card-price {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text);
  margin: .5rem 0 1.2rem;
}
.upgrade-price-unit { font-size: .85rem; font-weight: 400; color: var(--slate); }
.upgrade-features {
  list-style: none;
  padding: 0; margin: 0 0 1.5rem;
  display: flex; flex-direction: column; gap: .6rem;
}
.upgrade-features li {
  font-size: .85rem;
  color: var(--text);
  padding-left: 1.4rem;
  position: relative;
}
.feat-yes::before { content: '✓'; position: absolute; left: 0; color: var(--mint); font-weight: 700; }
.feat-no  { color: var(--slate) !important; }
.feat-no::before  { content: '—'; position: absolute; left: 0; color: #3a3f52; }

.upgrade-current-badge {
  display: inline-block;
  padding: .5rem 1rem;
  border: 1px solid #2a2d3e;
  border-radius: 8px;
  font-size: .8rem;
  color: var(--slate);
}
.upgrade-btn-pro {
  width: 100%;
  background: var(--mint);
  color: #0a0a0a;
  border: none;
  border-radius: 8px;
  padding: .7rem;
  font-weight: 700;
  font-size: .9rem;
  cursor: pointer;
  transition: opacity .15s;
}
.upgrade-btn-pro:hover { opacity: .85; }
.upgrade-btn-cancel {
  width: 100%;
  background: transparent;
  color: var(--slate);
  border: 1px solid #2a2d3e;
  border-radius: 8px;
  padding: .6rem;
  font-size: .85rem;
  cursor: pointer;
}
.upgrade-form-card {
  background: #1a1c2a;
  border: 1px solid #2a2d3e;
  border-radius: 14px;
  padding: 1.8rem;
}
.upgrade-form-card h3 { color: var(--text); margin-bottom: .5rem; }
.upgrade-form-card p  { color: var(--slate); font-size: .9rem; margin-bottom: 1rem; }

/* ── Profile page ─────────────────────────────────────────── */
.profile-tier-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.profile-tier-badge {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .07em;
  padding: .2rem .7rem;
  border-radius: 4px;
}
.profile-pending-badge {
  font-size: .78rem;
  color: var(--mint);
  background: #0a1f1a;
  border: 1px solid var(--mint);
  padding: .2rem .7rem;
  border-radius: 4px;
}
.profile-upgrade-link {
  font-size: .82rem;
  color: var(--mint);
  text-decoration: none;
  font-weight: 600;
}
.profile-card {
  background: #1a1c2a;
  border: 1px solid #2a2d3e;
  border-radius: 14px;
  padding: 1.8rem;
}
.profile-card h3 { color: var(--text); margin-bottom: 1rem; font-size: 1rem; }

/* ── Series groups on homepage ────────────────────────────── */
.pf-series-block {
  margin-bottom: 2rem;
}
.pf-series-header-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: .4rem 1.5rem;
  margin-bottom: .25rem;
}
.pf-series-header-link {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--mint);
  text-decoration: none;
  letter-spacing: .06em;
  text-transform: uppercase;
  font-weight: 600;
  transition: color .2s;
  flex: 1;
  min-width: 0;
}
.pf-series-header-link:hover { color: #fff; }
.pf-series-header-label {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--slate);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.pf-series-count {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--slate);
  background: var(--navy-lighter);
  padding: .1rem .5rem;
  border-radius: 10px;
  flex-shrink: 0;
  white-space: nowrap;
}
.pf-series-see-all {
  padding: .5rem 1.5rem 0;
}

/* ── Make card clickable via title link (no nested anchor issues) ── */
.pf-writing-item .pf-writing-title a {
  color: var(--white-bright);
  text-decoration: none;
  transition: color .2s;
}
.pf-writing-item:hover .pf-writing-title a { color: var(--mint); }

/* ── Series detail page ─────────────────────────────────────── */
.series-post-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.series-post-item {
  display: grid;
  grid-template-columns: 2rem 120px 1fr;
  gap: 1.25rem;
  padding: 1.25rem 1rem;
  border-radius: 10px;
  border: 1px solid transparent;
  text-decoration: none;
  color: inherit;
  transition: background .2s, border-color .2s, box-shadow .2s;
  align-items: start;
}
.series-post-item:hover {
  background: var(--navy-light);
  border-color: var(--border);
  box-shadow: var(--shadow);
}
.series-post-num {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--mint);
  font-weight: 700;
  padding-top: .15rem;
  text-align: center;
}
.series-post-thumb img {
  width: 120px;
  height: 80px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--navy-lighter);
  display: block;
  filter: grayscale(20%) brightness(.9);
  transition: filter .3s;
}
.series-post-item:hover .series-post-thumb img { filter: none; }
.series-post-thumb-placeholder {
  width: 120px;
  height: 80px;
  background: var(--navy-lighter);
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--mint);
}
.series-post-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white-bright);
  margin-bottom: .4rem;
  line-height: 1.4;
  transition: color .2s;
}
.series-post-item:hover .series-post-title { color: var(--mint); }
.series-post-meta {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--slate);
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: .5rem;
  align-items: center;
}
.series-post-desc {
  font-size: .88rem;
  color: var(--slate);
  line-height: 1.6;
  margin: 0;
}
.access-badge {
  font-size: .68rem;
  font-weight: 600;
  padding: .1rem .45rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.access-login {
  background: #eff6ff;
  color: #2563eb;
  border: 1px solid #bfdbfe;
}
.access-pro {
  background: #fdf4ff;
  color: #9333ea;
  border: 1px solid #e9d5ff;
}
@media (max-width: 768px) {
  .series-post-item {
    grid-template-columns: 1.5rem 80px 1fr;
    gap: .75rem;
  }
  .series-post-thumb img,
  .series-post-thumb-placeholder { width: 80px; height: 56px; }
}