/* ===== kumbu.chawanda.com — public CSS ===== */
html{color-scheme:light}
[data-theme="dark"]{color-scheme:dark}
:root{
  /* Light theme */
  --ink:#1a2520;
  --ink-soft:#3d4945;        /* darkened from #4a5650 — 7.2:1 on paper */
  --ink-mute:#5a6760;        /* for least-important meta text */
  --paper:#fafaf6;
  --paper-2:#f0ede0;         /* slightly darker than #f3f1e8 for better card separation */
  --paper-3:#fff;            /* cards / form surfaces */
  --line:#cbc7b7;            /* darker than #dcd9cd for sharper borders */
  --line-soft:#e3dfd0;
  --accent:#1f6230;          /* deeper than #2a7a3f — 7.5:1 on paper */
  --accent-2:#b87a1f;        /* deeper than #d4933a — 4.8:1 on paper */
  --accent-soft:#dceadb;     /* slightly stronger tint */
  --accent-ink:#0d3a1c;      /* readable text on accent-soft chips */
  --header-bg:rgba(250,250,246,.92);
  --footer-bg:#1a2520;
  --footer-ink:#dee3da;
  --code-bg:#1a2520;
  --code-ink:#e9efe7;
  --danger:#a82424;
  --shadow:0 8px 24px rgba(20,30,24,.10);
  --radius:14px;
  --serif:"Source Serif Pro","Iowan Old Style","Apple Garamond","Palatino",Georgia,serif;
  --sans:"Inter","Helvetica Neue",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}

/* ===== Dark theme ===== */
[data-theme="dark"]{
  --ink:#e8ede4;
  --ink-soft:#b7c0b8;
  --ink-mute:#8c958e;
  --paper:#10171a;
  --paper-2:#171f22;
  --paper-3:#1c2528;
  --line:#2c373a;
  --line-soft:#222b2e;
  --accent:#7cc592;          /* lighter green for dark bg */
  --accent-2:#e3b86b;
  --accent-soft:#1d3025;
  --accent-ink:#bce5c5;
  --header-bg:rgba(16,23,26,.92);
  --footer-bg:#0a1012;
  --footer-ink:#c8cfc8;
  --code-bg:#0c1314;
  --code-ink:#e9efe7;
  --danger:#ff8e8e;
  --shadow:0 8px 24px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;min-height:100%}
body{
  font-family:var(--sans);
  font-size:17px;
  line-height:1.6;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}
.site-main{flex:1 0 auto}
.site-footer{flex-shrink:0}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;letter-spacing:-0.01em;line-height:1.2;margin:0 0 .4em}
h1{font-size:clamp(2.2rem,5vw,3.6rem)}
h2{font-size:clamp(1.6rem,3vw,2.2rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
img{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
.wrap.narrow{max-width:760px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--header-bg);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .25s,border-color .25s,color .25s;
}
/* Transparent header over slideshow until scrolled. Solidify when mobile menu is open. */
body.has-slideshow:not(.scrolled):not(.nav-open) .site-header{
  background:linear-gradient(180deg,rgba(15,22,18,.5),transparent);
  border-bottom-color:transparent;
}
body.has-slideshow:not(.scrolled):not(.nav-open) .site-header .brand{color:#fff}
body.has-slideshow:not(.scrolled):not(.nav-open) .site-header .brand-mark{box-shadow:0 4px 14px rgba(0,0,0,.3)}
body.has-slideshow:not(.scrolled):not(.nav-open) .primary-nav a{color:rgba(255,255,255,.92);text-shadow:0 1px 6px rgba(0,0,0,.3)}
body.has-slideshow:not(.scrolled):not(.nav-open) .primary-nav a:hover{color:#fff}
body.has-slideshow:not(.scrolled):not(.nav-open) .nav-toggle span{background:#fff}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:18px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:600;font-family:var(--serif);font-size:1.15rem}
.brand:hover{text-decoration:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),#3a9550);
  color:#fff;font-family:var(--serif);font-style:italic;font-size:1.3rem;
  box-shadow:0 4px 10px rgba(42,122,63,.3);
}
.primary-nav{display:flex;gap:22px}
.primary-nav a{color:var(--ink-soft);font-size:.95rem}
.primary-nav a:hover{color:var(--accent);text-decoration:none}

.nav-toggle{
  display:none;background:none;border:0;padding:8px;cursor:pointer;
  width:42px;height:42px;flex-direction:column;justify-content:center;gap:5px;
}

/* Theme toggle */
.theme-toggle{
  background:none;border:0;cursor:pointer;color:var(--ink-soft);
  width:36px;height:36px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:1.05rem;margin-left:auto;margin-right:14px;
  transition:background .15s,color .15s;
}
.theme-toggle:hover{background:var(--paper-2);color:var(--accent)}
.theme-toggle .t-sun,.theme-toggle .t-moon{position:absolute;transition:opacity .2s,transform .25s}
.theme-toggle .t-sun{opacity:0;transform:scale(.6) rotate(-90deg)}
.theme-toggle .t-moon{opacity:1;transform:scale(1) rotate(0)}
[data-theme="dark"] .theme-toggle .t-sun{opacity:1;transform:scale(1) rotate(0)}
[data-theme="dark"] .theme-toggle .t-moon{opacity:0;transform:scale(.6) rotate(90deg)}
.theme-toggle{position:relative;overflow:hidden}
body.has-slideshow:not(.scrolled):not(.nav-open) .theme-toggle{color:rgba(255,255,255,.92)}
body.has-slideshow:not(.scrolled):not(.nav-open) .theme-toggle:hover{background:rgba(255,255,255,.15)}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero — plain (fallback when no slides) */
.hero.hero-plain{padding:80px 0 60px;background:linear-gradient(180deg,var(--paper) 0%,var(--paper-2) 100%)}
.eyebrow{
  text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;font-weight:600;
  color:var(--accent);margin:0 0 8px;
}
.hero-text h1{margin-top:6px}
.lede{font-family:var(--serif);font-size:1.3rem;color:var(--ink-soft);font-style:italic}
.bio-snippet{margin:24px 0;color:var(--ink-soft);font-size:1.05rem}
.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}

/* Hero — with slideshow */
.hero-slides{
  position:relative;
  min-height:100vh;
  min-height:100dvh;            /* mobile-safe; ignores browser chrome */
  margin-top:-77px;             /* sit behind transparent header */
  padding:140px 0 80px;
  overflow:hidden;
  display:flex;align-items:flex-end;
  color:#fff;
}
.hero-slides .slides{position:absolute;inset:0;z-index:0}
.hero-slides .slide{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:0;transition:opacity 1.6s ease-in-out;
  transform:scale(1.06);
}
.hero-slides .slide.active{opacity:1;animation:kenburns 12s ease-out forwards}
@keyframes kenburns{
  from{transform:scale(1.02)}
  to{transform:scale(1.15)}
}
.hero-slides .slide-overlay{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg, rgba(15,22,18,.15) 0%, rgba(15,22,18,.5) 60%, rgba(15,22,18,.85) 100%),
    linear-gradient(90deg, rgba(15,22,18,.55) 0%, rgba(15,22,18,.15) 60%, transparent 100%);
}
.hero-slides .hero-inner{position:relative;z-index:1;width:100%}
.hero-slides .hero-text{max-width:680px}
.hero-slides .eyebrow{color:#a8d5b3;text-shadow:0 1px 8px rgba(0,0,0,.4)}
.hero-slides h1{color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.35);font-size:clamp(2.6rem,6vw,4.4rem)}
.hero-slides .lede{color:rgba(255,255,255,.92);font-style:normal;text-shadow:0 1px 8px rgba(0,0,0,.3)}
.hero-slides .bio-snippet{color:rgba(255,255,255,.88);font-size:1.08rem;max-width:580px}
.hero-slides .bio-snippet p{margin:0 0 .6em}
.btn.ghost-on-dark{
  background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.4);
  backdrop-filter:blur(6px);
}
.btn.ghost-on-dark:hover{background:rgba(255,255,255,.2);text-decoration:none}

/* Slide dots */
.slide-dots{
  position:absolute;bottom:24px;right:24px;z-index:2;
  display:flex;gap:8px;padding:8px 14px;
  background:rgba(15,22,18,.35);backdrop-filter:blur(8px);
  border-radius:999px;
}
.slide-dots .dot{
  width:9px;height:9px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.4);padding:0;transition:background .2s,transform .2s;
}
.slide-dots .dot:hover{background:rgba(255,255,255,.7)}
.slide-dots .dot.active{background:#fff;transform:scale(1.2)}

/* Sections */
.section{padding:70px 0}
.section-alt{background:var(--paper-2)}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:32px;gap:20px}
.more{font-size:.95rem;color:var(--accent-2)}

/* Page hero (interior) */
.page-hero{padding:70px 0 30px;border-bottom:1px solid var(--line);background:var(--paper-2)}

/* Post cards */
.post-cards,.album-cards{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.post-card,.album-card{
  background:var(--paper-3);border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);transition:transform .2s,box-shadow .2s;color:var(--ink);
}
.post-card:hover,.album-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);text-decoration:none}
.post-card .cover,.album-card .thumb{height:160px;background:var(--paper-2) center/cover no-repeat}
.album-card .thumb.empty{background:linear-gradient(135deg,var(--accent-soft),var(--paper-2))}
.post-card .card-body,.album-card .card-body{padding:18px 20px 22px}
.post-card h3,.album-card h3{margin:0 0 8px;font-size:1.15rem}
.post-card p,.album-card p{margin:0;color:var(--ink-soft);font-size:.95rem}
.post-card .meta{margin-top:10px;font-size:.85rem;color:var(--ink-soft)}

.album-grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}

/* Post list */
.post-list{list-style:none;padding:0;margin:30px 0}
.post-list li{border-bottom:1px solid var(--line);padding:24px 0}
.post-list a{color:var(--ink);display:block}
.post-list a:hover{text-decoration:none}
.post-list h2{margin:0 0 6px;font-size:1.6rem}
.post-list .excerpt{color:var(--ink-soft);margin:8px 0 0}
.post-list .meta{color:var(--ink-soft);font-size:.9rem;margin:0}

.chip{
  display:inline-block;padding:2px 10px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent-ink);font-size:.8rem;
  margin-right:6px;text-decoration:none;
}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.tag{padding:6px 14px;border-radius:999px;background:var(--paper-3);border:1px solid var(--line);color:var(--ink-soft);font-size:.9rem}
.tag:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.tag.active{background:var(--accent);color:var(--paper);border-color:var(--accent)}

/* Post detail */
.post-header{padding:60px 0 30px}
.post-header .eyebrow{color:var(--accent-2)}
.post-cover{margin:0 auto 40px;max-width:1140px;padding:0 24px}
.post-cover img{width:100%;border-radius:var(--radius);max-height:520px;object-fit:cover}
.post-tags{margin-top:18px}

/* Prose (rendered markdown) */
.prose{font-family:var(--serif);font-size:1.18rem;line-height:1.75;color:var(--ink)}
.prose h2{margin-top:1.8em;font-size:1.6rem}
.prose h3{margin-top:1.4em;font-size:1.3rem}
.prose p{margin:0 0 1em}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{
  border-left:3px solid var(--accent);padding:8px 0 8px 22px;
  color:var(--ink-soft);font-style:italic;margin:1.5em 0;
}
.prose img{border-radius:8px;margin:1.5em auto;box-shadow:var(--shadow)}
.prose code{
  font-family:var(--mono);font-size:.92em;
  background:var(--paper-2);padding:2px 6px;border-radius:4px;
}
.prose pre{
  background:var(--code-bg);color:var(--code-ink);padding:18px 22px;border-radius:10px;
  overflow:auto;font-family:var(--mono);font-size:.92em;line-height:1.5;
  margin:1.5em 0;
}
.prose pre code{background:transparent;padding:0;color:inherit}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1em}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.prose table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:.95em;font-family:var(--sans)}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:10px;text-align:left}

/* Timeline (CV) */
.timeline{list-style:none;padding:0;margin:30px 0}
.timeline li{display:grid;grid-template-columns:140px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid var(--line)}
.timeline .when{color:var(--ink-soft);font-size:.95rem;font-variant-numeric:tabular-nums}
.timeline h3{margin:0 0 4px;font-size:1.15rem}
.timeline .org{color:var(--ink-soft);font-weight:400}
.timeline .meta{color:var(--ink-soft);font-size:.9rem;margin:0 0 6px}

/* Publications */
.pub-list{list-style:none;padding:0;margin:0}
.pub{padding:22px 0;border-bottom:1px solid var(--line)}
.pub-title{font-family:var(--serif);font-size:1.15rem;font-weight:600;margin:0 0 6px}
.pub-meta{margin:0;color:var(--ink-soft);font-size:.95rem}
.pub-meta .author.me{color:var(--ink);font-weight:600}
.pub-abs{margin-top:10px;color:var(--ink-soft);font-size:.95rem}

/* Photo grid */
.photo-grid{
  display:grid;gap:8px;
  grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
}
.photo{margin:0;cursor:zoom-in;position:relative;overflow:hidden;border-radius:8px;background:var(--paper-2)}
.photo img{width:100%;height:220px;object-fit:cover;transition:transform .35s}
.photo:hover img{transform:scale(1.04)}
.photo figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:18px 12px 10px;color:#fff;font-size:.85rem;
  background:linear-gradient(transparent,rgba(0,0,0,.55));
}

/* Buttons */
.btn{
  display:inline-block;padding:10px 20px;border-radius:8px;font-weight:500;
  font-size:.95rem;border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:background .15s,color .15s,border-color .15s;
}
.btn.primary{background:var(--accent);color:var(--paper)}
.btn.primary:hover{filter:brightness(1.1);text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{background:var(--paper-2);text-decoration:none}
.btn.small{padding:6px 12px;font-size:.85rem}
.btn.danger{background:var(--paper-3);color:var(--danger);border-color:var(--line)}
.btn.danger:hover{background:var(--paper-2)}

/* Pagination */
.pagination{display:flex;justify-content:space-between;align-items:center;padding:30px 0;color:var(--ink-soft)}

/* Footer */
.site-footer{padding:36px 0;background:var(--footer-bg);color:var(--footer-ink);font-size:.95rem}
.site-footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px}
.site-footer a{color:var(--footer-ink);margin-right:14px}
.site-footer a:hover{color:var(--paper)}
.site-footer a.quiet{color:var(--ink-mute);opacity:.6}

.empty{color:var(--ink-soft);font-style:italic;padding:40px 0;text-align:center}

/* ===== Tablet (<= 900px) ===== */
@media (max-width:900px){
  .hero.hero-plain{padding:50px 0 40px}
  .hero-slides{padding:110px 0 60px}
  .section{padding:50px 0}
  .timeline li{grid-template-columns:110px 1fr;gap:16px;padding:16px 0}
}

/* ===== Mobile (<= 720px) ===== */
@media (max-width:720px){
  body{font-size:16px}
  .wrap{padding:0 18px}

  /* Header: hamburger nav */
  .site-header .wrap{padding-top:12px;padding-bottom:12px}
  .nav-toggle{display:flex}
  .primary-nav{
    display:none;
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;gap:0;
    background:var(--header-bg);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    padding:8px 0;
  }
  .primary-nav.open{display:flex}
  .primary-nav a{
    padding:14px 24px;font-size:1rem;
    border-bottom:1px solid var(--line);
    color:var(--ink) !important;text-shadow:none !important;
  }
  .primary-nav a:last-child{border-bottom:0}
  /* When menu is open over the slideshow, keep the hamburger lines dark too */
  body.has-slideshow:not(.scrolled) .nav-toggle.active span{background:var(--ink)}
  .brand-text{font-size:1rem}
  .brand-mark{width:30px;height:30px;font-size:1.15rem}

  /* Hero */
  .hero.hero-plain{padding:36px 0 30px}
  .hero-slides{padding:90px 0 50px;margin-top:-62px}
  .hero-slides h1{font-size:2.4rem}
  .hero-slides .bio-snippet{font-size:1rem}
  h1{font-size:2rem;line-height:1.15}
  h2{font-size:1.5rem}
  .lede{font-size:1.05rem}
  .bio-snippet{font-size:.98rem;margin:18px 0}
  .hero-cta{gap:8px;margin-top:20px}
  .hero-cta .btn{flex:1;text-align:center;padding:11px 14px;font-size:.92rem}
  .slide-dots{bottom:14px;right:14px;padding:6px 10px}
  .slide-dots .dot{width:7px;height:7px}

  /* Sections */
  .section{padding:40px 0}
  .page-hero{padding:36px 0 22px}
  .section-head{flex-direction:column;align-items:flex-start;gap:6px;margin-bottom:22px}

  /* Cards: single column */
  .post-cards,.album-cards,.album-grid{grid-template-columns:1fr;gap:16px}
  .post-card .cover,.album-card .thumb{height:180px}

  /* Post list */
  .post-list li{padding:18px 0}
  .post-list h2{font-size:1.25rem}

  /* Prose */
  .prose{font-size:1.06rem;line-height:1.65}
  .prose h2{font-size:1.35rem}
  .prose h3{font-size:1.15rem}
  .prose pre{padding:14px 16px;font-size:.85em}
  .post-header{padding:36px 0 22px}
  .post-cover{padding:0 18px;margin-bottom:24px}

  /* Timeline: single column on phones */
  .timeline li{grid-template-columns:1fr;gap:4px;padding:16px 0}
  .timeline .when{font-size:.85rem;font-weight:600;color:var(--accent)}

  /* Publications */
  .pub{padding:18px 0}
  .pub-title{font-size:1.05rem}
  .pub-meta{font-size:.9rem}

  /* Photo grid: 2 cols */
  .photo-grid{grid-template-columns:repeat(2,1fr);gap:6px}
  .photo img{height:160px}

  /* Tag cloud */
  .tag-cloud{gap:6px}
  .tag{padding:5px 11px;font-size:.85rem}

  /* Buttons */
  .btn{padding:10px 16px;font-size:.92rem}
  .btn.small{padding:6px 10px;font-size:.8rem}

  /* Footer: stack */
  .site-footer{padding:26px 0}
  .site-footer .wrap{flex-direction:column;align-items:flex-start;gap:8px}
  .site-footer a{margin-right:12px;font-size:.9rem}

  /* Pagination */
  .pagination{flex-direction:column;gap:10px;padding:24px 0;text-align:center}

  /* Lightbox tweaks */
  .lb button.prev,.lb button.next{width:40px;height:40px;font-size:18px}
  .lb .prev{left:10px}.lb .next{right:10px}
  .lb .close{top:14px;right:14px}
}

/* ===== Tiny (<= 380px) ===== */
@media (max-width:380px){
  h1{font-size:1.75rem}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .photo-grid{grid-template-columns:1fr}
  .photo img{height:240px}
}