/* ------------------------------------------------------------
   JohnnyMuhindo.pro — Dark Olive Tech Theme (CSS only)
   Requested: darker background (same vibe as Publications button)
   Replace: /assets/css/style.css
   ------------------------------------------------------------ */

:root{
  /* Palette (inspired by profile photo: khaki/olive/charcoal) */
  --olive:#364021;      /* main background (requested) */
  --olive2:#2b331a;
  --dark:#0c1a0a;
  --khaki:#ae926d;
  --sand:#b6a493;
  --brown:#6a5743;

  /* Theme tokens */
  --bg: var(--olive);
  --fg: #f5f7fb;
  --muted: rgba(245,247,251,.78);
  --muted2: rgba(245,247,251,.62);

  --border: rgba(182,164,147,.22);

  --header-bg: rgba(12,26,10,.62);
  --surface-bg: rgba(12,26,10,.40);
  --surface-bg-strong: rgba(12,26,10,.54);

  --accent: var(--khaki);
  --accent2: #d6c2a2;

  --shadow: 0 18px 60px rgba(0,0,0,.45);
  --shadow2: 0 10px 26px rgba(0,0,0,.30);

  --radius: 18px;
  --radiusSm: 14px;
  --maxw: 1120px;

  --ring: 0 0 0 4px rgba(174,146,109,.28);

  /* Background: mostly olive, with subtle depth */
  --gradient-bg:
    radial-gradient(900px 520px at 12% -10%, rgba(174,146,109,.22), transparent 60%),
    radial-gradient(900px 520px at 92% 0%, rgba(182,164,147,.10), transparent 60%),
    radial-gradient(700px 520px at 80% 92%, rgba(0,0,0,.20), transparent 65%),
    linear-gradient(180deg, rgba(12,26,10,.10) 0%, rgba(12,26,10,.52) 100%),
    linear-gradient(180deg, var(--bg) 0%, var(--olive2) 100%);
}

/* Base */
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background: var(--gradient-bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection{background: rgba(174,146,109,.30);}

img{max-width:100%;height:auto;display:block;}

a{
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 3px;
}
a:hover{ text-decoration: underline; }

a:focus-visible{
  outline: none;
  box-shadow: var(--ring);
  border-radius: 10px;
}

.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 18px;
}

/* Header / Nav */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 10px 26px rgba(0,0,0,.22);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding: 12px 0;
}

.brand{display:flex;flex-direction:column;gap:2px;min-width: 220px;}
.brand-title{
  font-weight: 850;
  letter-spacing: -.02em;
  color: var(--fg);
}
.brand-sub{
  font-size: 12px;
  color: var(--muted2);
}

.nav-toggle{
  display:none;
  border:1px solid var(--border);
  background: var(--surface-bg-strong);
  border-radius: 12px;
  padding: 8px 10px;
  font-size: 18px;
  color: var(--fg);
  box-shadow: var(--shadow2);
}

.site-nav{display:block;}
.nav-list{
  display:flex;
  align-items:center;
  gap: 10px;
  list-style:none;
  margin:0;
  padding:0;
  flex-wrap:wrap;
}

.nav-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--fg);
  border: 1px solid transparent;
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.nav-link:hover{
  background: rgba(174,146,109,.16);
  border-color: rgba(174,146,109,.30);
  text-decoration:none;
  transform: translateY(-1px);
}
.nav-link.active{
  background: rgba(174,146,109,.20);
  border-color: rgba(174,146,109,.34);
}

/* Dropdowns (details/summary) */
.nav-details{position:relative;}
.nav-details > summary{list-style:none;cursor:pointer;}
.nav-details > summary::-webkit-details-marker{display:none;}

.submenu{
  list-style:none;
  margin: 10px 0 0;
  padding: 10px;
  border: 1px solid var(--border);
  background: rgba(12,26,10,.78);
  border-radius: 14px;
  box-shadow: var(--shadow);
  min-width: 240px;
}
@media (min-width: 881px){
  .nav-details[open] .submenu{
    position:absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
  }
}

/* Main */
main{padding: 22px 0 38px;}

/* Hero */
.hero{
  padding: 18px 0 4px;
}

.hero-grid{
  display:grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 18px;
  align-items:start;
}

.hero-card{
  background: rgba(12,26,10,.40);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow2);
  backdrop-filter: blur(10px);
}

.avatar-wrap{
  display:flex;
  justify-content:flex-end;
}

.avatar{
  width: 164px;
  height: 164px;
  border-radius: 999px;
  overflow:hidden;
  border: 2px solid rgba(174,146,109,.55);
  box-shadow: 0 22px 55px rgba(0,0,0,.38);
  background: rgba(12,26,10,.50);
}

.badges{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  margin: 10px 0 6px;
}
.badge{
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(174,146,109,.36);
  background: rgba(12,26,10,.46);
  color: rgba(245,247,251,.92);
}

.kicker{margin:0;color: var(--muted2);font-size: 14px;}
.hero-title{
  margin: 6px 0 6px;
  font-size: clamp(30px, 2.6vw, 40px);
  line-height: 1.12;
  letter-spacing: -.03em;
}
.hero-tagline{margin: 0 0 12px;color: var(--muted);}
.hero-statement{margin: 0 0 14px;max-width: 78ch;color: rgba(245,247,251,.92);}

/* Buttons */
.button-row{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin: 10px 0 10px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(182,164,147,.24);
  background: rgba(12,26,10,.56);
  color: var(--fg);
  box-shadow: var(--shadow2);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
}
.btn:hover{
  background: rgba(174,146,109,.18);
  border-color: rgba(174,146,109,.36);
  text-decoration:none;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.btn:focus-visible{
  outline: none;
  box-shadow: var(--shadow), var(--ring);
}

/* Make the first hero button "primary" without changing HTML */
.hero .button-row .btn:first-child{
  background: linear-gradient(135deg, var(--khaki), #c6b08f);
  border-color: transparent;
  color: #141414;
}
.hero .button-row .btn:first-child:hover{
  transform: translateY(-2px);
  box-shadow: 0 18px 50px rgba(0,0,0,.40);
}

/* Micro links */
.micro-links{font-size: 13px;color: var(--muted2);}
.sep{margin: 0 8px;color: var(--muted2);}

/* Sections */
.section{margin: 28px 0;}
.lead{font-size: 18px;color: rgba(245,247,251,.94);}
.note{color: var(--muted);}
.meta{font-size: 13px;color: var(--muted2);margin: 4px 0 0;}

/* Cards */
.cards h2,.keywords h2,.affiliations h2{margin: 0 0 12px;letter-spacing:-.02em;}

.card-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.card,
.list-card,
.pub-item,
.faq details,
.post{
  background: var(--surface-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow2);
  backdrop-filter: blur(10px);
}

.card{
  padding: 16px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: rgba(174,146,109,.40);
}
.card h3{margin: 0 0 8px;font-size: 16px;letter-spacing: -.01em;}
.card p{margin:0;color: rgba(245,247,251,.88);}

/* List cards */
.list-cards{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.list-card{
  padding: 16px;
  background: var(--surface-bg-strong);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.list-card:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: rgba(174,146,109,.36);
}
.list-card h3{margin:0 0 6px;font-size: 18px;letter-spacing: -.02em;}
.list-card p{margin: 10px 0 0;color: var(--muted);}

/* Chips */
.chips{
  list-style:none;
  margin: 12px 0 0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
}
.chips.small{margin: 10px 0 0;gap: 6px;}

.chip{
  border: 1px solid rgba(182,164,147,.22);
  background: rgba(12,26,10,.54);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 13px;
  color: rgba(245,247,251,.88);
}

/* Publications */
.pub-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap: 12px;
}
.pub-item{
  padding: 14px;
  background: var(--surface-bg-strong);
  transition: border-color .18s ease, box-shadow .18s ease;
}
.pub-item:hover{
  border-color: rgba(174,146,109,.40);
  box-shadow: var(--shadow);
}
.pub-title{font-weight: 850;letter-spacing: -.01em;}
.pub-authors,.pub-venue,.pub-note{color: var(--muted);font-size: 14px;}

/* FAQ */
.faq details{padding: 12px 14px;background: var(--surface-bg-strong);}
.faq details + details{margin-top: 12px;}
.faq summary{cursor:pointer;font-weight: 850;letter-spacing:-.01em;}
.faq-body{margin-top: 10px;color: rgba(245,247,251,.92);}

/* Post */
.post{padding: 18px;background: var(--surface-bg-strong);}
.post h2,.post h3{margin-top: 18px;letter-spacing:-.02em;}

/* Footer */
.site-footer{
  border-top: 1px solid var(--border);
  padding: 22px 0;
  background: rgba(12,26,10,.68);
  backdrop-filter: blur(12px);
}
.footer-inner{display:grid;grid-template-columns: 2fr 1fr 1fr;gap: 16px;}
.footer-title{font-weight: 850;margin-bottom: 6px;letter-spacing:-.01em;}
.footer-meta{color: var(--muted2);font-size: 13px;}

/* Utilities */
.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  border:0;
}

/* Responsive */
@media (max-width: 880px){
  .hero-grid{grid-template-columns: 1fr;}
  .avatar{width: 128px;height: 128px;}
  .card-grid{grid-template-columns: 1fr;}
  .list-cards{grid-template-columns: 1fr;}
  .footer-inner{grid-template-columns: 1fr;}
  .brand{min-width: 0;}
  .nav-toggle{display:inline-block;}
  .site-nav{display:none;}
  .site-nav.open{display:block;}
  .nav-list{flex-direction:column;align-items:stretch;}
  .submenu{position:static;box-shadow:none;margin-top:8px;}
}