/* ===================================================================
   CAMELS — Cameroon Association for Medical Laboratory Science
   Design system: lab notebook / specimen-label motif
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,400&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  /* --- palette: official CAMELS colours — navy blue and white --- */
  --bg:            #F4F6FA;
  --bg-alt:        #E9EEF6;
  --paper:         #FFFFFF;
  --ink:           #101A2E;
  --ink-soft:      #47546B;
  --ink-faint:     #8993A8;
  --primary:       #0E2C5C;   /* CAMELS navy blue */
  --primary-dark:  #081A3D;
  --primary-tint:  #E3E9F5;
  --accent:        #3E6BB0;   /* lighter brand blue, from the logo's map/ribbon tone */
  --accent-tint:   #DCE6F5;
  --flag-red:      #A6192E;   /* used sparingly — notices, required fields */
  --flag-green:    #1E7A4C;
  --line:          #D6DDEA;
  --line-strong:   #B7C2D9;

  --font-display: 'Newsreader', Georgia, serif;
  --font-body:    'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --gap: 1.5rem;
  --radius: 3px;
  --container: 1180px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: inherit; }
ul{ margin:0; padding:0; list-style:none; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- type scale ---------- */
h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--primary-dark);
  line-height: 1.15;
  margin: 0 0 0.5em;
}
h1{ font-size: clamp(2.2rem, 4vw, 3.4rem); font-weight: 500; letter-spacing: -0.01em; }
h2{ font-size: clamp(1.6rem, 2.6vw, 2.2rem); }
h3{ font-size: 1.3rem; }
p{ margin: 0 0 1em; color: var(--ink-soft); max-width: 62ch; }
.lede{ font-size: 1.15rem; color: var(--ink-soft); max-width: 52ch; }

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section{ padding: 4.5rem 0; }
section.tight{ padding: 3rem 0; }

/* ---------- hemocytometer grid texture (signature motif) ---------- */
.grid-texture{
  position: relative;
  overflow: hidden;
}
.grid-texture::before{
  content:"";
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.35;
  pointer-events:none;
}
.grid-texture.on-dark::before{
  background-image:
    linear-gradient(rgba(255,255,255,0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.09) 1px, transparent 1px);
  opacity: 1;
}

/* ---------- header / nav ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(245,246,242,0.92);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--line);
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding: 1rem 1.5rem;
  max-width: var(--container); margin:0 auto;
}
.brand{
  display:flex; align-items:center; gap:0.7rem;
  text-decoration:none;
}
.brand-mark{
  width:38px; height:38px; flex:none;
}
.brand-text{
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--primary-dark);
  line-height:1.1;
}
.brand-text small{
  display:block;
  font-family: var(--font-body);
  font-size: 0.68rem;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  margin-top: 3px;
}
.main-nav{ display:flex; align-items:center; gap: 1.9rem; }
.main-nav a{
  text-decoration:none;
  font-size: 0.93rem;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
}
.main-nav a:hover{ color: var(--primary); }
.main-nav a.current{ color: var(--primary-dark); font-weight:600; }
.main-nav a.current::after{
  content:""; position:absolute; left:0; right:0; bottom:-4px; height:2px; background: var(--accent);
}
.nav-cta{
  background: var(--primary); color:#fff !important;
  padding: 0.55rem 1.1rem; border-radius: var(--radius);
  font-size: 0.88rem !important; font-weight:600;
  text-decoration:none;
}
.nav-cta:hover{ background: var(--primary-dark) !important; }
.nav-toggle{ display:none; background:none; border:none; cursor:pointer; padding:0.3rem; }
.nav-toggle svg{ width:26px; height:26px; }

@media (max-width: 860px){
  .main-nav{
    position:absolute; top:100%; left:0; right:0;
    background: var(--paper);
    flex-direction:column; align-items:flex-start;
    padding: 1.2rem 1.5rem; gap: 0.9rem;
    border-bottom: 1px solid var(--line);
    display:none;
  }
  .main-nav.open{ display:flex; }
  .nav-toggle{ display:block; }
  .nav-cta{ order: -1; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius);
  font-family: var(--font-body); font-weight:600; font-size: 0.95rem;
  text-decoration:none; border: 1px solid transparent; cursor:pointer;
}
.btn-primary{ background: var(--primary); color:#fff; }
.btn-primary:hover{ background: var(--primary-dark); }
.btn-ghost{ background:transparent; color: var(--primary-dark); border-color: var(--line-strong); }
.btn-ghost:hover{ border-color: var(--primary); color: var(--primary); }
.btn-accent{ background: var(--accent); color:#241a06; }
.btn-accent:hover{ background:#B47A17; }

/* ---------- hero photo slideshow ---------- */
.hero-slider{
  position: relative;
  height: clamp(420px, 62vw, 620px);
  overflow: hidden;
  background: var(--primary-dark);
}
.slide{
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
  background:
    linear-gradient(180deg, rgba(8,36,37,0.25) 0%, rgba(8,36,37,0.88) 100%),
    repeating-linear-gradient(135deg, #123f40, #123f40 22px, #0e3536 22px, #0e3536 44px);
  display:flex; align-items:flex-end;
}
.slide.active{ opacity: 1; z-index:1; }
.slide-label{
  position:absolute; top:1.4rem; left:1.5rem;
  font-family: var(--font-mono); font-size: 0.72rem; color: rgba(255,255,255,0.55);
  border: 1px dashed rgba(255,255,255,0.35); padding: 0.3rem 0.6rem; border-radius: 2px;
}
.slide-content{
  position:relative; z-index:2;
  padding: 0 1.5rem 3.2rem;
  max-width: var(--container); margin: 0 auto; width:100%;
  color: #fff;
}
.slide-content .eyebrow{ border-color: var(--accent); color: var(--accent); background: rgba(8,36,37,0.4); }
.slide-content h1{ color:#fff; max-width: 20ch; }
.slide-content p{ color: rgba(255,255,255,0.82); max-width: 48ch; }
.slider-nav{
  position:absolute; bottom: 1.6rem; right: 1.5rem; z-index:3;
  display:flex; gap: 0.6rem; align-items:center;
}
.slider-arrow{
  width:38px; height:38px; border-radius:50%; border:1px solid rgba(255,255,255,0.5);
  background: rgba(0,0,0,0.15); color:#fff; cursor:pointer; display:flex; align-items:center; justify-content:center;
}
.slider-arrow:hover{ background: rgba(0,0,0,0.35); }
.slider-arrow svg{ width:18px; height:18px; }
.slider-dots{
  position:absolute; bottom: 1.75rem; left: 1.5rem; z-index:3;
  display:flex; gap: 0.5rem;
}
.slider-dots button{
  width:26px; height:3px; border:none; background: rgba(255,255,255,0.4); cursor:pointer; padding:0; border-radius:2px;
}
.slider-dots button.active{ background: var(--accent); }
@media (max-width: 640px){
  .slider-nav{ display:none; }
}

/* ---------- hero (secondary content strip under slideshow) ---------- */
.hero{
  padding: 3rem 0 3.5rem;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
}
.hero .container{
  display:grid; grid-template-columns: 1.15fr 0.85fr; gap: 3rem; align-items:center;
}
.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  display:inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}
.hero-actions{ display:flex; gap:0.9rem; margin-top: 1.6rem; flex-wrap:wrap; }
.stat-row{
  display:flex; gap: 2.2rem; margin-top: 2.6rem;
  padding-top: 1.6rem; border-top: 1px solid var(--line-strong);
}
.stat b{
  display:block; font-family: var(--font-display); font-size: 1.7rem; color: var(--primary-dark);
}
.stat span{ font-size: 0.82rem; color: var(--ink-faint); }
.hero-art{ position:relative; }

@media (max-width: 860px){
  .hero .container{ grid-template-columns: 1fr; }
  .hero-art{ order:-1; max-width: 320px; margin: 0 auto; }
}

/* ---------- specimen-label card system (signature component) ---------- */
.label-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem;
}
@media (max-width: 900px){ .label-grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 620px){ .label-grid{ grid-template-columns: 1fr; } }

.spec-card{
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem 1.4rem;
  position: relative;
}
.spec-card::before{
  content: attr(data-ref);
  position:absolute; top:-1px; left: 1.4rem;
  transform: translateY(-50%);
  background: var(--primary);
  color:#fff;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  letter-spacing: 0.03em;
}
.spec-card h3{ margin-top: 0.6rem; }
.spec-card p{ font-size: 0.94rem; margin-bottom: 0.6rem; }
.spec-card .tag{
  display:inline-block; font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--accent); border: 1px solid var(--accent-tint); background: var(--accent-tint);
  padding: 0.15rem 0.45rem; border-radius: 2px; margin-top: 0.4rem;
}

/* ---------- section headers ---------- */
.section-head{
  display:flex; align-items:flex-end; justify-content:space-between; gap:2rem;
  margin-bottom: 2.2rem; flex-wrap:wrap;
}
.section-head .ref{
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-faint);
}

/* ---------- placeholder blocks (clearly flagged for client) ---------- */
.ph-image{
  background: repeating-linear-gradient(135deg, #EFEFEA, #EFEFEA 10px, #E5E6DF 10px, #E5E6DF 20px);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  display:flex; align-items:center; justify-content:center; text-align:center;
  color: var(--ink-faint); font-size: 0.82rem; padding: 1rem;
  min-height: 180px;
}
.ph-image span{ font-family: var(--font-mono); font-size: 0.72rem; }

.ph-note{
  border: 1px dashed var(--flag-red);
  background: #FBEDEE;
  color: #7A1120;
  font-size: 0.85rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius);
  margin: 0.8rem 0;
  font-family: var(--font-mono);
}
.ph-note strong{ font-family: var(--font-body); }

/* ---------- person card ---------- */
.person{
  text-align:left;
}
.person .ph-image{ aspect-ratio: 4/5; min-height:0; margin-bottom: 0.9rem; }
.person h4{ font-family: var(--font-display); font-size: 1.05rem; margin:0 0 0.1rem; color: var(--primary-dark); }
.person .role{ font-size: 0.82rem; color: var(--accent); font-weight:600; margin-bottom:0.4rem; }
.person p{ font-size: 0.85rem; }

/* ---------- band / cta strip ---------- */
.band{
  background: var(--primary); color: #fff;
  padding: 3.2rem 0;
}
.band h2{ color:#fff; }
.band p{ color: rgba(255,255,255,0.78); }
.band .container{
  display:flex; align-items:center; justify-content:space-between; gap:2rem; flex-wrap:wrap;
}

/* ---------- two-col content ---------- */
.two-col{
  display:grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items:start;
}
@media (max-width: 820px){ .two-col{ grid-template-columns: 1fr; } }

/* ---------- lists with markers ---------- */
.check-list li{
  display:flex; gap:0.7rem; margin-bottom:0.8rem; font-size:0.95rem; color:var(--ink-soft);
}
.check-list li svg{ flex:none; margin-top:3px; width:18px; height:18px; color: var(--flag-green); }

/* ---------- timeline (history) ---------- */
.timeline{ border-left: 2px solid var(--line-strong); padding-left: 1.8rem; }
.timeline .item{ position:relative; padding-bottom: 2.2rem; }
.timeline .item::before{
  content:""; position:absolute; left:-2.28rem; top:0.3rem;
  width:10px; height:10px; border-radius:50%; background: var(--accent); border: 2px solid var(--bg);
  outline: 2px solid var(--accent);
}
.timeline .year{ font-family: var(--font-mono); color: var(--accent); font-size:0.85rem; }

/* ---------- table ---------- */
table{ width:100%; border-collapse: collapse; margin: 1rem 0; }
th, td{ text-align:left; padding: 0.7rem 0.8rem; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
th{ font-family: var(--font-mono); font-size:0.75rem; color: var(--ink-faint); font-weight:500; text-transform:none; }

/* ---------- forms ---------- */
.form-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-grid .full{ grid-column: 1/-1; }
label{ display:block; font-size: 0.85rem; margin-bottom: 0.35rem; color: var(--ink-soft); font-weight:500; }
input, select, textarea{
  width:100%; padding: 0.65rem 0.8rem; border:1px solid var(--line-strong);
  border-radius: var(--radius); font-family: var(--font-body); font-size:0.95rem;
  background: var(--paper); color: var(--ink);
}
textarea{ resize: vertical; min-height: 110px; }
@media (max-width: 640px){ .form-grid{ grid-template-columns: 1fr; } }

/* ---------- badges / chips (chapters, filters) ---------- */
.chip-row{ display:flex; flex-wrap:wrap; gap: 0.6rem; margin-bottom: 2rem; }
.chip{
  font-family: var(--font-mono); font-size: 0.78rem;
  border: 1px solid var(--line-strong); padding: 0.4rem 0.8rem; border-radius: 999px;
  color: var(--ink-soft); background: var(--paper); cursor:pointer;
}
.chip.active{ background: var(--primary); color:#fff; border-color: var(--primary); }

/* ---------- footer ---------- */
.site-footer{
  background: var(--primary-dark); color: rgba(255,255,255,0.85);
  padding: 3.5rem 0 1.6rem;
}
.footer-grid{
  display:grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2.5rem;
  padding-bottom: 2.4rem; border-bottom: 1px solid rgba(255,255,255,0.15);
}
.site-footer h4{ color:#fff; font-family: var(--font-body); font-size:0.85rem; letter-spacing:0.03em; margin-bottom:1rem; }
.site-footer a{ text-decoration:none; color: rgba(255,255,255,0.72); font-size:0.9rem; }
.site-footer a:hover{ color:#fff; }
.site-footer li{ margin-bottom: 0.55rem; }
.site-footer p{ color: rgba(255,255,255,0.65); font-size:0.9rem; }
.foot-brand{ display:flex; gap:0.7rem; align-items:center; margin-bottom:0.9rem; }
.foot-bottom{
  display:flex; justify-content:space-between; align-items:center; padding-top:1.4rem;
  font-size:0.8rem; color: rgba(255,255,255,0.55); flex-wrap:wrap; gap:0.8rem;
}
.social-row{ display:flex; gap:0.7rem; }
.social-row a{
  width:34px; height:34px; border:1px solid rgba(255,255,255,0.3); border-radius:50%;
  display:flex; align-items:center; justify-content:center;
}
.social-row svg{ width:16px; height:16px; }
@media (max-width: 900px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }

/* ---------- page hero (interior pages) ---------- */
.page-hero{
  padding: 3.2rem 0; background: var(--bg-alt); border-bottom:1px solid var(--line);
}
.page-hero .ref{ font-family: var(--font-mono); font-size:0.78rem; color:var(--accent); margin-bottom:0.6rem; display:block; }

/* ---------- page-hero with a real photo background ---------- */
.page-hero-photo{
  position: relative;
  background-size: cover;
  background-position: center;
  border-bottom: none;
  color: #fff;
}
.page-hero-photo::before{
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(8,26,61,0.55) 0%, rgba(8,26,61,0.15) 55%, rgba(8,26,61,0.05) 100%);
}
.page-hero-photo .container{ position: relative; z-index: 1; }
.page-hero-photo .ref{
  display: inline-block;
  color: #fff;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.6);
  background: rgba(8,26,61,0.35);
  padding: 0.25rem 0.65rem;
  border-radius: 2px;
  margin-bottom: 0.8rem;
  text-shadow: none;
}
.page-hero-photo h1{ color: #fff; text-shadow: 0 2px 12px rgba(0,0,0,0.5); }
.page-hero-photo .lede{ color: #fff; text-shadow: 0 1px 8px rgba(0,0,0,0.55); }

/* ---------- gallery ---------- */
.gallery-grid{
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 0.9rem;
}
.gallery-grid .ph-image{ aspect-ratio: 1/1; min-height:0; }
.gallery-grid .wide{ grid-column: span 2; aspect-ratio: 2/1; }
.gallery-grid figure{ margin:0; }
.gallery-grid figure.wide{ grid-column: span 2; }
.gallery-grid figure img{ width:100%; display:block; border-radius: var(--radius); }
.gallery-grid figcaption{
  font-size: 0.8rem; color: var(--ink-soft); margin-top: 0.45rem; line-height:1.3;
}
@media (max-width: 760px){ .gallery-grid{ grid-template-columns: repeat(2,1fr); } .gallery-grid .wide{ grid-column: span 2; } .gallery-grid figure.wide{ grid-column: span 2; } }

/* ---------- accordion (FAQ) ---------- */
.accordion-item{ border-bottom: 1px solid var(--line); }
.accordion-item summary{
  padding: 1.1rem 0; cursor:pointer; font-weight:600; color: var(--primary-dark);
  list-style:none; display:flex; justify-content:space-between; align-items:center;
}
.accordion-item summary::-webkit-details-marker{ display:none; }
.accordion-item p{ padding-bottom:1.1rem; }