/* === Minimal, reliable accordion === */
/* Bounding box */
details.ap-accordion {
    margin: 1rem 0;
    border: 1px solid #e7e7e7;
    border-radius: 10px;
    background: #fcfcfc;
    padding: 0.5rem 0.75rem;
    transition: box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  }
  details.ap-accordion[open] {
    background: #fff;
    box-shadow: 0 6px 18px rgba(0,0,0,0.06);
    border-color: #eaeaea;
  }
  
  /* Summary header with arrow */
  details.ap-accordion > summary {
    cursor: pointer;
    font-weight: 600;          /* normal size, slightly bolder */
    list-style: none;          /* hide default marker */
    outline: none;
    padding: 0.25rem 0.1rem;
  }
  details.ap-accordion > summary::before {
    content: "▸";
    display: inline-block;
    margin-right: 0.5rem;
    transform: translateY(-0.5px);
    transition: transform 0.2s ease;
  }
  details.ap-accordion[open] > summary::before {
    transform: rotate(90deg) translateY(-0.5px);
  }
  
  /* Body text (only inside the accordion, not summary) */
  details.ap-accordion > *:not(summary) {
    font-size: 0.95rem;        /* slightly smaller body */
    line-height: 1.7;
    color: #333;
    margin-top: 0.35rem;
  }
  
  /* ---- Hard guardrails: DO NOT touch bold or create bullets ---- */
  details.ap-accordion * strong,
  details.ap-accordion * b {
    display: inline;           /* never block */
    font-style: normal;        /* no italics override */
    font-weight: 700;          /* real bold */
    padding: 0;
    margin: 0;
  }
  details.ap-accordion * strong::before,
  details.ap-accordion * b::before,
  details.ap-accordion * strong::marker,
  details.ap-accordion * b::marker {
    content: none;             /* no dots/markers ever */
  }
  .archive .archive__item-excerpt,
  .archive .archive__item-teaser { display:none !important; }
  
  /* ============= Publications Styling ============= */
.pub-entry {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 0.9rem 1rem;
    margin: 0.6rem 0;
    background: #fafafa;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
  }
  
  .pub-entry:hover {
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
  }
  
  .pub-entry.highlight {
    border-left: 4px solid #3b82f6;
    background: #f8fbff;
  }
  
  .pub-meta {
    max-width: 85%;
    line-height: 1.5;
  }
  
  .pub-title {
    font-weight: 600;
    color: #111;
  }
  
  .pub-authors {
    color: #444;
    font-size: 0.95rem;
  }
  
  .pub-venue {
    color: #666;
    font-style: italic;
    font-size: 0.9rem;
  }
  
  .pub-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.25rem;
    font-size: 0.9rem;
  }
  
  .pub-link {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
  }
  .pub-link:hover {
    text-decoration: underline;
  }
  
  .pub-status {
    font-weight: 600;
    color: #d97706;
    background: #fff8e1;
    border-radius: 6px;
    padding: 0.2rem 0.5rem;
    font-size: 0.85rem;
  }
  
  @media (prefers-color-scheme: dark) {
    .pub-entry {
      /* background: #171717; */
      border-color: #2a2a2a;
    }
    .pub-entry.highlight {
      /* background: #101820; */
      border-left-color: #3b82f6;
    }
    .pub-title { color: #171717; }
    .pub-authors, .pub-venue { color: #171717; }
    .pub-link { color: #60a5fa; }
    /* .pub-status {
      color: #facc15;
      background: #3a2f00;
    } */
  }

  /* ====== HERO ====== */
.hero { margin-top: .5rem; margin-bottom: 1.25rem; }
.hero h1, .hero #Belet-Tefera { margin-bottom: .25rem; }
.hero-sub {
  display: block;
  color: #666;
  margin-bottom: .6rem;
}
.hero .lead { margin: .4rem 0 1rem; }
.hero-cta { display: flex; gap: .5rem; flex-wrap: wrap; }

/* Buttons */
a.btn {
  display: inline-block;
  background: #3b82f6;
  color: #fff !important;
  padding: .55rem 1rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: background .2s ease, transform .05s ease;
}
a.btn:hover { background: #2563eb; }
a.btn:active { transform: translateY(1px); }
a.btn.btn--ghost {
  background: transparent;
  color: #1f2937 !important;
  border: 1px solid #d1d5db;
}
a.btn.btn--ghost:hover {
  background: #f5f7fb;
}

/* ====== RESEARCH INTERESTS GRID ====== */
.ri-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: .75rem 0 1.25rem;
}
.ri-card {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
  background: #fafafa;
  transition: box-shadow .2s ease, transform .15s ease, background .2s ease;
}
.ri-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,.06); transform: translateY(-2px); background: #fff; }
.ri-card img { width: 100%; height: auto; display: block; }
.ri-card figcaption { padding: .7rem .85rem .85rem; color: #333; line-height: 1.5; font-size: 0.95rem; }
.ri-card figcaption strong, .ri-card figcaption b { font-weight: 700; }

/* ====== TYPOGRAPHY TWEAKS ====== */
.lead { font-size: 1.1rem; line-height: 1.8; color: #222; }
.post-content p { line-height: 1.75; }
.post-content h2 { margin-top: 1.1rem; }

/* ===== Research Interests — Stacked Cards ===== */
.ri-stack {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: .75rem 0 1.5rem;
  }
  
  .ri-card {
    display: flex;
    align-items: stretch;
    gap: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 1rem;
    background: #fafafa;
    box-shadow: 0 8px 24px rgba(0,0,0,.05);
    transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  }
  .ri-card:hover {
    transform: translateY(-2px);
    background: #fff;
    border-color: #eaeaea;
    box-shadow: 0 14px 36px rgba(0,0,0,.08);
  }
  
  /* Media (left column) */
  .ri-media {
    flex: 0 0 42%;
    margin: 0;
    border-radius: 12px;
    overflow: hidden;
  }
  .ri-media img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
  }
  
  /* Copy (right column) */
  .ri-copy {
    flex: 1 1 auto;
    padding: .25rem .2rem;
  }
  .ri-copy h3, .ri-copy h4 {
    margin: 0 0 .35rem 0;
    font-weight: 700;
  }
  .ri-copy p { margin: .35rem 0 .6rem; line-height: 1.75; }
  .ri-copy ul { margin: .35rem 0 0 1.1rem; }
  
  /* Subtle accent bar on the left for visual rhythm */
  .ri-card {
    position: relative;
  }
  .ri-card::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    border-radius: 16px 0 0 16px;
    background: linear-gradient(180deg, #3b82f6, #60a5fa);
    opacity: .85;
  }
  
  /* Responsive */
  @media (max-width: 900px) {
    .ri-card { flex-direction: column; }
    .ri-media { flex-basis: auto; height: 220px; }
  }
  @media (max-width: 560px) {
    .ri-media { height: 200px; }
    .ri-copy { padding-top: .1rem; }
  }
  
  
/* ===== Research Interests — White Cards ===== */
.ri-white { background: #fff; }

/* stack spacing */
.ri-stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: .75rem 0 1.75rem;
}

/* card */
.ri-card {
  display: flex;
  align-items: stretch;
  gap: 1.15rem;
  padding: 1.15rem;
  border-radius: 16px;
  background: #fff;                              /* always white */
  border: 1px solid #e9eef5;                     /* light separator */
  box-shadow:
    0 1px 1px rgba(17,24,39,.04),
    0 8px 26px rgba(17,24,39,.06);               /* soft lift */
  transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease;
  position: relative;
  overflow: hidden;
}

/* subtle accent border on the left (gradient) */
.ri-card::before{
  content:"";
  position:absolute; inset:0 0 0 auto; width:4px; left:0;
  background: linear-gradient(180deg,#3b82f6 0%, #60a5fa 100%);
  opacity:.9;
  border-radius:16px 0 0 16px;
}

/* hover polish */
.ri-card:hover{
  transform: translateY(-2px);
  border-color:#e4eaf2;
  box-shadow:
    0 1px 1px rgba(17,24,39,.05),
    0 14px 34px rgba(17,24,39,.10);
}

/* media (left) */
.ri-media{
  flex:0 0 42%;
  margin:0;
  border-radius:12px;
  overflow:hidden;
  background: #f4f6fb;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.03);
}
.ri-media img{
  display:block; width:100%; height:100%; object-fit:cover;
  transform: scale(1.01);
  transition: transform .35s ease;
}
.ri-card:hover .ri-media img{ transform: scale(1.03); }

/* copy (right) */
.ri-copy{ flex:1 1 auto; padding:.2rem .1rem; color:#111827; }
.ri-copy h3{ margin:.1rem 0 .5rem; font-weight:700; letter-spacing:.1px; }
.ri-copy p{ margin:.35rem 0 .6rem; line-height:1.75; color:#334155; }
.ri-copy ul{ margin:.35rem 0 0 1.1rem; }
.ri-copy li{ margin:.15rem 0; color:#334155; }

/* tasteful label chip (use <span class="ri-chip">Theory</span> if you like) */
.ri-chip{
  display:inline-block; margin-left:.45rem; padding:.14rem .5rem;
  border-radius:999px; font-size:.75rem; font-weight:600;
  background:#eef4ff; color:#1e40af; border:1px solid #e0e7ff;
}

/* responsive */
@media (max-width: 900px){
  .ri-card{ flex-direction:column; }
  .ri-media{ flex-basis:auto; height:220px; }
}
@media (max-width: 560px){
  .ri-media{ height:200px; }
}

/* keep this section white even in dark themes */
@media (prefers-color-scheme: dark){
  .ri-white, .ri-white .ri-card{ background:#fff; }
  .ri-copy p, .ri-copy li{ color:#374151; }
}

/* Video inside research cards */
.ri-media video,
.ri-media iframe {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;     /* crops nicely like the images */
  border: 0;
  border-radius: 12px;   /* matches the card */
}

/* Optional: enforce a nice aspect ratio for media */
.ri-media { aspect-ratio: 16 / 9; }          /* desktop */
@media (max-width: 900px) { .ri-media { aspect-ratio: 16 / 10; } }

/* ===== Blog Archive — clean white minimalist ===== */

/* Year subtitle */
.archive .archive__subtitle{
    margin-top: 1.4rem;
    padding-top: .4rem;
    border-top: 1px solid #e5e7eb;
    color: #64748b;
    letter-spacing: .3px;
    font-weight: 600;
    font-size: .95rem;
  }
  
  /* Blog entry container */
  .post-teaser{
    background: #fff;
    border: 1px solid #e2e8f0; /* subtle grey border */
    border-radius: 10px;
    padding: .75rem .85rem;
    margin: .25rem 0 .85rem;
    transition: border-color .15s ease, box-shadow .2s ease, transform .15s ease;
  }
  
  /* Hover subtle highlight */
  .post-teaser:hover{
    border-color: #cfd8e3;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(0,0,0,.04);
  }
  
  /* Title */
  .post-teaser__title{
    margin: 0 0 .25rem;
    font-size: 1.05rem;      /* ↓ smaller font */
    font-weight: 700;
    line-height: 1.35;
  }
  
  /* Title link */
  .post-teaser__link{
    color: #0f172a;
    text-decoration: none;
    border-bottom: 1px solid transparent;
  }
  .post-teaser:hover .post-teaser__link{
    border-bottom-color: #bcd2ff;
  }
  
  /* Meta info */
  .post-teaser__meta{
    display: flex;
    align-items: center;
    gap: .35rem;
    font-size: .85rem;     /* ↓ smaller font */
    color: #64748b;
  }
  .post-teaser__meta .meta-sep{
    color:#94a3b8;
    margin: 0 .2rem;
  }
  .meta-icon{
    font-size: .9rem;
    opacity:.9;
  }
  
  @media (max-width: 640px){
    .post-teaser{
      padding: .65rem .75rem;
    }
    .post-teaser__title{
      font-size: 1rem;
    }
    .post-teaser__meta{
      font-size: .82rem;
    }
  }