/* ============================================================
   Özel Osmaniye Doğan Akademi — Ortak Stil Dosyası
   Palette: derin lacivert + laboratuvar mavisi + biyoloji yeşili
   ============================================================ */

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

:root{
  --navy-deep:   #0b2545;
  --blue-primary:#173d6e;
  --blue-mid:    #2e6ba6;
  --lab-blue:    #3f8fc4;
  --bio-green:   #2f8f7a;
  --paper:       #f4f8fb;
  --paper-2:     #eaf1f7;
  --white:       #ffffff;
  --ink:         #142235;
  --ink-soft:    #45566e;
  --line:        #d7e2ec;

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

  --radius: 4px;
  --container: 1120px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }

.wrap{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------------- Molecule signature motif ---------------- */
.molecule-rule{
  display:flex;
  align-items:center;
  gap:10px;
  margin: 0 0 18px 0;
}
.molecule-rule svg{ flex-shrink:0; }
.molecule-rule .rule-line{
  height:1px;
  flex:1;
  background: linear-gradient(90deg, var(--lab-blue), transparent);
}

/* ---------------- Header ---------------- */
header.site-header{
  background: var(--navy-deep);
  color: var(--white);
  border-bottom: 3px solid var(--bio-green);
}
.top-strip{
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.top-strip .wrap{
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 30px 28px 26px;
  position: relative;
}
.brand{
  font-family: var(--font-display);
  font-weight:600;
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  text-align:center;
  letter-spacing: 0.01em;
  position: relative;
  padding-bottom: 14px;
}
.brand::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  transform: translateX(-50%);
  width: 64px;
  height: 3px;
  background: var(--bio-green);
  border-radius: 2px;
}
.brand small{
  display:block;
  font-family: var(--font-mono);
  font-weight:500;
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lab-blue);
  margin-top: 8px;
}
/* Larger, more decorative brand treatment for the homepage */
.brand-home{
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
}
.brand-home small{ font-size: 0.72rem; margin-top: 10px; }

nav.main-nav .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 0 28px;
}
.nav-links{
  display:flex;
  gap: 4px;
}
nav.main-nav a{
  display:block;
  padding: 15px 20px;
  font-size: 0.92rem;
  font-weight:600;
  letter-spacing: 0.01em;
  border-bottom: 3px solid transparent;
  transition: border-color .18s ease, background .18s ease;
}
nav.main-nav a:hover{ background: rgba(255,255,255,0.06); }
nav.main-nav a.active{ border-bottom-color: var(--bio-green); color: var(--white); }

.home-btn{
  background: var(--bio-green);
  color: var(--white) !important;
  padding: 12px 22px !important;
  margin: 10px 0;
  border-radius: var(--radius);
  border-bottom: none !important;
  font-weight:700 !important;
  letter-spacing: 0.02em;
  box-shadow: 0 6px 16px -8px rgba(47,143,122,0.7);
}
.home-btn:hover{ background: #276f5f; }
.home-btn.active{ background: var(--navy-deep); box-shadow: none; outline: 2px solid var(--bio-green); }

/* ---------------- Hero ---------------- */
.hero{
  background:
    linear-gradient(160deg, var(--navy-deep) 0%, var(--blue-primary) 46%, var(--blue-mid) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.hero .wrap{
  padding: 92px 28px 96px;
  position: relative;
  z-index: 2;
}
.hero-eyebrow{
  display:inline-block;
  font-family: var(--font-mono);
  font-weight:700;
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #eafff8;
  background: rgba(63,214,176,0.16);
  border: 1px solid rgba(63,214,176,0.55);
  padding: 9px 18px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero h1{
  font-family: var(--font-display);
  font-weight:600;
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  line-height: 1.14;
  max-width: 15ch;
  margin: 0 0 26px 0;
}
.hero p{
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  max-width: 62ch;
  color: #dfeaf3;
  margin: 0;
}
.hero-decor{
  position:absolute;
  right: -60px;
  top: 0;
  bottom: 0;
  width: 46%;
  opacity: 0.55;
  z-index:1;
}

/* ---------------- Page hero (subpages) ---------------- */
.page-hero{
  background: linear-gradient(160deg, var(--navy-deep), var(--blue-primary));
  color: var(--white);
}
.page-hero .wrap{ padding: 58px 28px 52px; }
.page-hero h1{
  font-family: var(--font-display);
  font-weight:600;
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  margin: 0 0 12px 0;
}
.page-hero p{
  color:#dfeaf3;
  max-width: 60ch;
  margin:0;
  font-size: 1.02rem;
}

/* ---------------- Main sections ---------------- */
main{ background: var(--paper); }
.section{ padding: 64px 28px; }
.section .wrap{ padding: 0; }
.section-inner{ max-width: var(--container); margin: 0 auto; padding: 0 28px; }

.card{
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}

.doc-frame{
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 18px 40px -28px rgba(11,37,69,0.45);
}
.doc-frame img{ border-radius: 2px; }

.zoom-btn{
  display:block;
  width:100%;
  padding:0;
  border:none;
  background:none;
  cursor: zoom-in;
  font: inherit;
}
.zoom-btn img{
  transition: opacity .15s ease, transform .15s ease;
  border-radius: 2px;
}
.zoom-btn:hover img{ opacity: 0.92; }
.zoom-btn:focus-visible img{ outline: 2px solid var(--bio-green); outline-offset: 3px; }
.zoom-hint{
  margin: 12px 2px 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  text-align: center;
}

/* CSS-only lightbox (no JavaScript needed) */
.lightbox-target{
  position: fixed;
  inset: 0;
  background: rgba(11,37,69,0.94);
  z-index: 999;
  display:flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .25s ease, visibility 0s linear .25s;
}
.lightbox-target:target{
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity .25s ease, visibility 0s linear 0s;
}
.lightbox-target img{
  max-width: 92vw;
  max-height: 88vh;
  border-radius: 4px;
  box-shadow: 0 30px 70px -20px rgba(0,0,0,0.6);
  transform: scale(0.96);
  transition: transform .25s ease;
}
.lightbox-target:target img{
  transform: scale(1);
}
.lightbox-close-link{
  position: fixed;
  top: 22px;
  right: 28px;
  display:flex;
  align-items:center;
  justify-content:center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.4);
  color: var(--white);
  font-size: 1.8rem;
  line-height: 1;
  text-decoration:none;
  transition: background .15s ease;
}
.lightbox-close-link:hover{ background: rgba(255,255,255,0.14); }

.pdf-cta{
  display:inline-flex;
  align-items:center;
  gap:10px;
  background: var(--navy-deep);
  color: var(--white);
  padding: 14px 26px;
  border-radius: var(--radius);
  font-weight:600;
  font-size: 0.95rem;
  transition: background .18s ease;
}
.pdf-cta:hover{ background: var(--blue-primary); }

/* Staff cards */
.staff-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(230px,1fr));
  gap: 18px;
}
.staff-card{
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--bio-green);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
}
.staff-card .role{
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-mid);
  margin-bottom: 8px;
}
.staff-card h3{
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 6px 0;
  color: var(--navy-deep);
}
.staff-card .branch{
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.link-card{
  display:block;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  cursor: pointer;
}
.link-card:hover{
  transform: translateY(-3px);
  border-color: var(--bio-green);
  box-shadow: 0 16px 34px -22px rgba(11,37,69,0.5);
}
.card-arrow{
  display:inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight:600;
  letter-spacing: 0.03em;
  color: var(--blue-mid);
}
.link-card:hover .card-arrow{ color: var(--bio-green); }
.privacy-note{
  margin-top: 26px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
  padding-top: 16px;
}

/* ---------------- Footer ---------------- */
footer.site-footer{
  background: var(--navy-deep);
  color: #cfe0ee;
  border-top: 3px solid var(--bio-green);
}
footer.site-footer .wrap{
  padding: 52px 28px 34px;
  display:grid;
  grid-template-columns: 1.4fr auto;
  gap: 40px;
  align-items:start;
}
.footer-headline{
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--white);
  margin: 0 0 18px 0;
}
.footer-line{
  font-size: 0.94rem;
  margin: 0 0 8px 0;
  color: #cfe0ee;
}
.footer-line.address{ max-width: 42ch; }
.qr-block{
  text-align:center;
  justify-self:end;
}
.qr-label{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: #9fd6c7;
  margin-bottom: 10px;
}
.qr-block img{
  width: 118px;
  height: 118px;
  background: var(--white);
  padding: 8px;
  border-radius: var(--radius);
}
.footer-bottom{
  border-top: 1px solid rgba(255,255,255,0.12);
  text-align:center;
  padding: 16px 28px 24px;
  font-size: 0.78rem;
  color: #8fa6bc;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 760px){
  .top-strip .wrap{ flex-direction:column; gap:12px; padding: 20px 20px 14px; }
  nav.main-nav .wrap{ justify-content:center; flex-wrap:wrap; padding: 0 12px 6px; }
  nav.main-nav a{ padding: 10px 12px; font-size: 0.85rem; }
  .hero .wrap, .page-hero .wrap{ padding: 56px 20px 60px; }
  .hero-decor{ display:none; }
  footer.site-footer .wrap{ grid-template-columns: 1fr; }
  .qr-block{ justify-self:start; }
}

:focus-visible{
  outline: 2px solid var(--bio-green);
  outline-offset: 2px;
}