/* ============================================================
   portfolio — styles.css
   Design:  minimal, typography-first, single accent
   Author:  Amal R S
============================================================ */

/* ── Variables ─────────────────────────────────────────── */
:root {
  --bg:           #0d0d0d;
  --bg-tint:      #131313;
  --border:       #222222;
  --text:         #d4d4d4;
  --text-strong:  #f0f0f0;
  --text-muted:   #666666;
  --accent:       #c8f135;      /* single accent — lime */
  --accent-dim:   rgba(200, 241, 53, 0.12);

  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Lora', Georgia, serif;
  --font-mono:  'JetBrains Mono', monospace;

  --nav-h: 60px;
  --max-w: 1080px;
  --ease:  cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg:          #fbfbf9;
  --bg-tint:     #f2f2ee;
  --border:      #e0e0dc;
  --text:        #333333;
  --text-strong: #111111;
  --text-muted:  #888888;
  --accent:      #5c7c00;
  --accent-dim:  rgba(92, 124, 0, 0.08);
}

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: #000; }

/* scrollbar */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-thumb { background: var(--border); }

/* ── NAV ────────────────────────────────────────────────── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5vw;
  transition: border-color 0.3s, background 0.3s;
}
#navbar.scrolled {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  line-height: 1;
}
.nav-dot {
  font-size: 2rem;
  line-height: 1;
  color: var(--accent);
  transition: transform 0.3s var(--ease);
}
.nav-logo:hover .nav-dot { transform: scale(1.4); }

.nav-links {
  display: flex; gap: 2rem; list-style: none;
}
.nav-links a {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}
.nav-links a:hover { color: var(--text-strong); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-right { display: flex; align-items: center; gap: 1rem; }

#themeBtn {
  background: none; border: 1px solid var(--border);
  color: var(--text-muted);
  width: 32px; height: 32px; border-radius: 50%;
  cursor: pointer; font-size: 1rem; line-height: 1;
  transition: border-color 0.2s, color 0.2s;
}
#themeBtn:hover { border-color: var(--accent); color: var(--accent); }

.burger {
  display: none; flex-direction: column;
  justify-content: center; gap: 5px;
  background: none; border: none; cursor: pointer;
  width: 28px; height: 28px; padding: 2px;
}
.burger span {
  display: block; height: 1.5px; width: 100%;
  background: var(--text-muted);
  transition: transform 0.2s, opacity 0.2s;
}
.burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }

/* ── MOBILE MENU ─────────────────────────────────────────── */
.mobile-menu {
  position: fixed; inset: 0; z-index: 90;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu ul { list-style: none; text-align: center; }
.mobile-menu li { margin: 1.4rem 0; }
.m-link {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-style: italic;
  color: var(--text-strong);
  transition: color 0.2s;
}
.m-link:hover { color: var(--accent); }

/* ── HERO ────────────────────────────────────────────────── */
#hero {
  min-height: 100svh;
  display: flex; flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 4rem) 5vw 4rem;
  position: relative;
}

.hero-inner { max-width: 680px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.4rem;
}

.hero-name {
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 700;
  color: var(--text-strong);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 1.6rem;
}

.hero-sub {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 500px;
  margin-bottom: 2.5rem;
}
.hero-sub em { color: var(--text); font-style: italic; }

.hero-status {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.9rem;
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 2px rgba(74,222,128,0.25);
  animation: statusPulse 2.4s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes statusPulse {
  0%,100% { box-shadow: 0 0 0 2px rgba(74,222,128,0.25); }
  50%      { box-shadow: 0 0 0 5px rgba(74,222,128,0.0); }
}
.hero-status span:last-child {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.hero-now {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 2rem;
  padding: 0.6rem 0.9rem;
  border-left: 2px solid var(--accent);
  background: var(--accent-dim);
  max-width: 520px;
}
.now-label {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-right: 0.7rem;
  font-weight: 500;
}

.hero-actions { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }

.btn-outline {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-strong);
  letter-spacing: 0.04em;
  transition: border-color 0.2s, background 0.2s;
}
.btn-outline:hover { border-color: var(--accent); background: var(--accent-dim); }

.btn-plain {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.btn-plain:hover { color: var(--accent); }

.hero-scroll {
  position: absolute;
  bottom: 2.5rem; left: 5vw;
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}
@keyframes scrollAnim {
  0%,100% { transform: scaleY(1); opacity: 0.5; }
  50%      { transform: scaleY(0.6); opacity: 1; }
}

/* ── SECTIONS ────────────────────────────────────────────── */
.section {
  padding: 7rem 5vw;
}
.section-tinted { background: var(--bg-tint); }

.section-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 600;
  color: var(--text-strong);
  line-height: 1.15;
  margin-bottom: 2.5rem;
}
h2 em { font-style: italic; color: var(--text-muted); }

h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-strong);
  margin-bottom: 0.4rem;
}

p {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 1rem;
}
p strong { color: var(--text-strong); font-weight: 600; }
p:last-child { margin-bottom: 0; }

.section-header-row { margin-bottom: 0; }

/* ── SPLIT LAYOUT ────────────────────────────────────────── */
.split {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 5rem;
  align-items: start;
}
.col-left h2 { font-size: clamp(1.4rem, 2.5vw, 2rem); }

/* ── PILLS ───────────────────────────────────────────────── */
.pill-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.8rem; }
.pill {
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  transition: border-color 0.2s, color 0.2s;
}
.pill:hover { border-color: var(--accent); color: var(--text-strong); }

/* ── SKILLS TABLE ────────────────────────────────────────── */
.skills-table {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 2.5rem;
}

.skill-group {
  padding: 1.6rem 1.4rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}
.skill-group:hover { background: var(--accent-dim); }
.skill-group:nth-child(3n) { border-right: none; }
.skill-group:nth-last-child(-n+3) { border-bottom: none; }

.skill-group h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.9rem;
}

.skill-group ul { list-style: none; }
.skill-group li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s, padding-left 0.2s;
}
.skill-group li:last-child { border-bottom: none; }
.skill-group:hover li { color: var(--text); }

/* ── PROJECTS ────────────────────────────────────────────── */
.project-list {
  display: flex; flex-direction: column;
  margin-top: 2.5rem;
}

.project-card {
  padding: 2.2rem 0;
  border-top: 1px solid var(--border);
  transition: background 0.2s;
  overflow: hidden;
}
.project-card:last-child { border-bottom: 1px solid var(--border); }

.project-fig {
  margin: 0 0 1.4rem;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 16 / 7;
  background: var(--bg-tint);
  position: relative;
  display: flex;
  flex-wrap: wrap;
}
.project-fig img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s var(--ease), filter 0.3s;
  filter: brightness(0.78) saturate(0.6);
}
.project-fig img + img {
  /* When two images exist, split 50/50 */
  width: 50%;
  height: 100%;
}
.project-fig img:has(+ img) {
  width: 50%;
  height: 100%;
}
.project-card:hover .project-fig img {
  transform: scale(1.03);
  filter: brightness(0.92) saturate(0.85);
}
figcaption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 0.45rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: #ccc;
  letter-spacing: 0.07em;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 100%);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.3s, transform 0.3s;
}
.project-card:hover figcaption { opacity: 1; transform: translateY(0); }

.project-top {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: 0.9rem;
}

.project-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.project-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.18rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}
.project-badge.ongoing {
  border-color: var(--accent);
  color: var(--accent);
}

.project-gh {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-left: auto;
  transition: color 0.2s;
}
.project-gh:hover { color: var(--accent); }

.project-card h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 600;
  color: var(--text-strong);
  line-height: 1.25;
  margin-bottom: 0.3rem;
}

.project-context {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 1rem;
  letter-spacing: 0.04em;
}

.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1.2rem; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ── TIMELINE ────────────────────────────────────────────── */
.timeline { margin-top: 0.5rem; }

.tl-item {
  padding: 1.6rem 0 1.6rem 1.4rem;
  border-left: 1px solid var(--border);
  margin-bottom: 0.2rem;
  position: relative;
}
.tl-item::before {
  content: '';
  position: absolute; top: 1.9rem; left: -3px;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
}

.tl-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}

.tl-org {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
  line-height: 1.5;
}
.tl-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 0.4rem;
}

.tl-points {
  list-style: none;
  margin-top: 0.7rem;
}
.tl-points li {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 0.5rem;
  padding-left: 1rem;
  position: relative;
}
.tl-points li::before {
  content: '—';
  position: absolute; left: 0;
  color: var(--text-muted);
  font-size: 0.7rem;
  top: 0.18rem;
}

/* ── CERTIFICATIONS ──────────────────────────────────────── */
.cert-list {
  list-style: none;
  margin-top: 0.8rem;
}
.cert-list li {
  font-size: 0.88rem;
  color: var(--text);
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 0.5rem;
  flex-wrap: wrap;
}
.cert-list li strong { color: var(--text-strong); }
.cert-badge {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 2px;
  letter-spacing: 0.05em;
}

/* ── CONTACT ─────────────────────────────────────────────── */
.contact-wrap { max-width: 640px; }
.contact-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.contact-list { display: flex; flex-direction: column; }

.contact-row {
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--border);
  transition: background 0.2s, padding-left 0.2s;
  border-radius: 2px;
}
.contact-row:last-child { border-bottom: 1px solid var(--border); }
.contact-row:hover { background: var(--accent-dim); padding-left: 0.6rem; }

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  width: 72px; flex-shrink: 0;
}
.contact-value {
  font-size: 0.9rem;
  color: var(--text);
  flex: 1;
}
.contact-arrow {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s, transform 0.2s;
}
.contact-row:hover .contact-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* ── FOOTER ──────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.8rem 5vw;
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
}
footer span, footer a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}
footer a:hover { color: var(--accent); }

/* ── FADE-UP ANIMATION ───────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* Hero items animate in on load */
.fade-up:nth-child(1) { transition-delay: 0.05s; }
.fade-up:nth-child(2) { transition-delay: 0.15s; }
.fade-up:nth-child(3) { transition-delay: 0.25s; }
.fade-up:nth-child(4) { transition-delay: 0.35s; }
.fade-up:nth-child(5) { transition-delay: 0.45s; }

/* Section reveals */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .burger    { display: flex; }

  .split { grid-template-columns: 1fr; gap: 2rem; }
  .col-left h2 { margin-bottom: 0; }

  .skills-table { grid-template-columns: 1fr 1fr; }
  .skill-group:nth-child(3n)      { border-right: 1px solid var(--border); }
  .skill-group:nth-child(2n)      { border-right: none; }
  .skill-group:nth-last-child(-n+3) { border-bottom: 1px solid var(--border); }
  .skill-group:nth-last-child(-n+2) { border-bottom: none; }

  .hero-scroll { display: none; }

  .footer-inner { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .skills-table { grid-template-columns: 1fr; }
  .skill-group  { border-right: none !important; }
  .skill-group:not(:last-child) { border-bottom: 1px solid var(--border) !important; }
  .skill-group:last-child { border-bottom: none !important; }
}

/* ── Expandable project cards ─────────────────────── */
.project-summary { margin-bottom: .6rem; }

.expand-btn {
  display: flex;
  align-items: center;
  gap: .4rem;
  background: none;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  letter-spacing: .03em;
  padding: .36rem .7rem;
  margin-top: 1.1rem;
  cursor: pointer;
  transition: border-color .2s, color .2s;
}
.expand-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.expand-btn .expand-icon {
  display: inline-block;
  transition: transform .3s ease;
}
.project-card.open .expand-btn .expand-icon { transform: rotate(180deg); }
.project-card.open .expand-btn { border-color: var(--accent); color: var(--accent); }

.project-details {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height .45s ease, opacity .35s ease, margin-top .3s ease;
  margin-top: 0;
}
.project-details:not([hidden]) {
  max-height: 800px;
  opacity: 1;
  margin-top: 1.6rem;
}
/* [hidden] keeps it out of flow when closed; .open removes hidden */

.detail-block { margin-bottom: 1.4rem; }
.detail-block:last-child { margin-bottom: 0; }
.detail-block h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: .75rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .5rem;
}
.detail-block p {
  font-size: .95rem;
  line-height: 1.75;
  color: var(--text-muted);
}
.detail-block p + p { margin-top: .6rem; }
.detail-block em { color: var(--text-primary); font-style: italic; }

/* ── Blog section ─────────────────────────────────── */
.section-header-row { margin-bottom: .6rem; }
.section-header-row .section-label { display: block; margin-bottom: .4rem; }

.blog-sub {
  font-size: .95rem;
  color: var(--text-muted);
  max-width: 58ch;
  margin-bottom: 2rem;
}

.blog-open-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .05em;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  margin-bottom: 1.2rem;
  transition: border-color .2s;
}

.blog-open-link:hover {
  border-color: var(--accent);
}

.blog-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.blog-search-wrap {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  width: min(480px, 100%);
}

.blog-search-label {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.blog-search-input {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-strong);
  padding: .62rem .75rem;
  border-radius: 3px;
  font-size: .86rem;
  line-height: 1.4;
  transition: border-color .2s, box-shadow .2s;
}

.blog-search-input::placeholder { color: var(--text-muted); }
.blog-search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.blog-result-count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--text-muted);
  white-space: nowrap;
}

.blog-status {
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-muted);
  min-height: 1.2rem;
  opacity: 0;
  transition: opacity .2s;
}

.blog-status.active { opacity: 1; }
.blog-status.error { color: #f87171; }

.blog-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
}

.blog-card {
  padding: 2rem 1.8rem 2rem 0;
  border-bottom: 1px solid var(--border);
}
.blog-card:not(:last-child) {
  padding-right: 2rem;
  border-right: 1px solid var(--border);
}
.blog-card:not(:first-child) { padding-left: 2rem; }

.blog-meta {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: .9rem;
}
.blog-date,
.blog-read {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  color: var(--text-muted);
  letter-spacing: .04em;
}
.blog-dot { color: var(--border); }

.blog-card h3 {
  font-family: 'Lora', Georgia, serif;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: .7rem;
}

.blog-excerpt {
  font-size: .9rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}

.blog-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: 1.2rem;
}

.blog-tag {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .03em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: .18rem .45rem;
}

.blog-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.blog-link:hover { border-color: var(--accent); }

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2rem 0;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.blog-detail {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
}

.blog-back-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  border-radius: 3px;
  padding: .42rem .72rem;
  cursor: pointer;
  transition: border-color .2s, color .2s;
  margin-bottom: 1.2rem;
}

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

.blog-article {
  max-width: 74ch;
}

.blog-detail-head {
  margin-bottom: 1.2rem;
}

.blog-detail-title {
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 4vw, 2.3rem);
  line-height: 1.2;
  margin-bottom: .8rem;
}

.blog-markdown {
  color: var(--text);
}

.blog-markdown h1,
.blog-markdown h2,
.blog-markdown h3,
.blog-markdown h4 {
  font-family: var(--font-serif);
  color: var(--text-strong);
  line-height: 1.3;
  margin-top: 1.8rem;
  margin-bottom: .7rem;
}

.blog-markdown h1 { font-size: 1.95rem; }
.blog-markdown h2 { font-size: 1.45rem; }
.blog-markdown h3 { font-size: 1.18rem; }

.blog-markdown p,
.blog-markdown li {
  font-size: .96rem;
  line-height: 1.82;
  color: var(--text);
}

.blog-markdown ul,
.blog-markdown ol {
  margin: 0 0 1.1rem 1.25rem;
}

.blog-markdown blockquote {
  margin: 1.2rem 0;
  padding: .7rem .9rem;
  border-left: 2px solid var(--accent);
  background: var(--accent-dim);
  color: var(--text-muted);
}

.blog-markdown code {
  font-family: var(--font-mono);
  font-size: .84em;
  background: var(--bg-tint);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: .1rem .32rem;
}

.blog-markdown pre {
  margin: 1.2rem 0;
  padding: .85rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-tint);
  overflow-x: auto;
}

.blog-markdown pre code {
  border: none;
  background: none;
  padding: 0;
}

.blog-related {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.blog-related h3 {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .95rem;
}

.blog-related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .7rem;
}

.blog-related-item {
  display: block;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: .7rem;
  transition: border-color .2s, background .2s;
}

.blog-related-item:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.blog-related-title {
  display: block;
  color: var(--text-strong);
  font-size: .85rem;
  line-height: 1.5;
  margin-bottom: .35rem;
}

.blog-related-meta {
  font-family: var(--font-mono);
  font-size: .67rem;
  color: var(--text-muted);
  letter-spacing: .04em;
}

@media (max-width: 860px) {
  .blog-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .blog-search-wrap {
    width: 100%;
  }

  .blog-list { grid-template-columns: 1fr; }
  .blog-card,
  .blog-card:not(:last-child),
  .blog-card:not(:first-child) {
    padding: 1.8rem 0;
    border-right: none;
  }

  .blog-related-list {
    grid-template-columns: 1fr;
  }
}