/* =========================================================
   Sağlık Araştırmaları ve Uygulamaları Dergisi
   T.C. İstanbul Şişli Meslek Yüksekokulu
   Tasarım sistemi — mavi/yeşil kurumsal kimliğe uygun,
   açık renk, akademik/editoryal ton.
   ========================================================= */

:root{
  /* --- Renk paleti --- */
  --bg:            #F7FAF8;   /* açık, kağıt tonu zemin */
  --surface:       #FFFFFF;
  --surface-alt:   #EEF6F1;   /* yumuşak nane tonu bölüm zemini */
  --surface-blue:  #EAF2FA;   /* yumuşak mavi tonu bölüm zemini */
  --ink:           #0D2B3E;   /* koyu lacivert metin */
  --ink-soft:      #4E6672;   /* ikincil metin */
  --ink-faint:     #7E9199;
  --blue:          #155E9A;   /* kurumsal mavi */
  --blue-deep:     #0B3B60;   /* koyu mavi (header/footer) */
  --green:         #2E9E6D;   /* kurumsal yeşil */
  --green-deep:    #1E7350;
  --green-tint:    #DCF0E6;
  --line:          #DCE7E1;   /* ince ayraç */
  --line-soft:     #E8F0EC;
  --gold:          #C79A45;   /* çok az kullanılan vurgu (rozet/DOI) */
  --shadow: 0 1px 2px rgba(11,43,62,.04), 0 8px 24px -12px rgba(11,43,62,.12);
  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1180px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Source Sans 3', 'Inter', -apple-system, sans-serif;
  font-size:16.5px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Fraunces', Georgia, serif;
  color:var(--blue-deep);
  line-height:1.16;
  margin:0 0 .5em;
  font-weight:600;
  letter-spacing:-0.01em;
}
h1{ font-size:clamp(2.1rem, 4vw, 3.1rem); font-weight:560; }
h2{ font-size:clamp(1.5rem, 2.6vw, 2rem); }
h3{ font-size:1.2rem; font-weight:650; }
p{ margin:0 0 1em; color:var(--ink); }
a{ color:var(--blue); text-decoration:none; }
a:hover{ color:var(--green-deep); }
ul{ margin:0 0 1em; padding-left:1.2em; }
li{ margin-bottom:.4em; }
img{ max-width:100%; display:block; }
::selection{ background:var(--green-tint); color:var(--ink); }

.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--green-deep);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:.55em;
  margin-bottom:.9em;
}
.eyebrow::before{
  content:'';
  width:22px; height:2px;
  background:linear-gradient(90deg,var(--blue),var(--green));
  display:inline-block;
}

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

/* skip link */
.skip-link{
  position:absolute; left:-999px; top:0;
  background:var(--blue-deep); color:#fff; padding:10px 16px;
  border-radius:0 0 8px 0; z-index:999;
}
.skip-link:focus{ left:0; }

/* ================= HEADER ================= */
.top-strip{
  background:var(--blue-deep);
  color:#DCEAF4;
  font-size:.82rem;
}
.top-strip .wrap{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:7px; padding-bottom:7px; gap:16px; flex-wrap:wrap;
}
.top-strip a{ color:#DCEAF4; }
.top-strip a:hover{ color:#fff; }
.top-strip .ts-left{ display:flex; gap:22px; flex-wrap:wrap; }
.top-strip .ts-left span{ opacity:.75; margin-right:.4em; }

.site-header{
  background:rgba(247,250,248,.92);
  backdrop-filter:blur(8px);
  position:sticky; top:0; z-index:50;
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 0;
  gap:24px;
}
.brand{ display:flex; align-items:center; gap:14px; }
.brand-mark{ width:46px; height:46px; flex:none; }
.brand-text .k1{
  font-family:'IBM Plex Mono', monospace;
  font-size:.68rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ink-faint); display:block; margin-bottom:2px;
}
.brand-text .k2{
  font-family:'Fraunces', serif; font-weight:600;
  font-size:1.14rem; color:var(--blue-deep); line-height:1.15;
}

nav.main-nav ul{
  list-style:none; margin:0; padding:0; display:flex; gap:2px; flex-wrap:wrap;
}
nav.main-nav a{
  color:var(--ink);
  font-size:.87rem;
  font-weight:600;
  padding:9px 13px;
  border-radius:8px;
  display:inline-block;
  white-space:nowrap;
}
nav.main-nav a:hover{ background:var(--surface-alt); color:var(--green-deep); }
nav.main-nav a.active{ color:var(--blue-deep); background:var(--surface-blue); }
.nav-toggle{ display:none; }

.river-line{ height:3px; width:100%; background:linear-gradient(90deg,var(--blue) 0%,var(--green) 100%); }

/* ================= HERO ================= */
.hero{
  padding:64px 0 56px;
  position:relative;
  overflow:hidden;
}
.hero.small{ padding:44px 0 40px; }
.hero-grid{
  display:grid; grid-template-columns:1.15fr .85fr; gap:48px; align-items:center;
}
.hero h1{ margin-bottom:.4em; }
.hero .lede{ font-size:1.14rem; color:var(--ink-soft); max-width:52ch; }
.hero-actions{ display:flex; gap:12px; margin-top:1.6em; flex-wrap:wrap; }

.btn{
  display:inline-flex; align-items:center; gap:.5em;
  font-weight:700; font-size:.92rem;
  padding:12px 22px; border-radius:999px;
  border:1.5px solid transparent;
  cursor:pointer; transition:transform .15s ease, box-shadow .15s ease;
}
.btn-primary{ background:var(--blue); color:#fff; }
.btn-primary:hover{ background:var(--blue-deep); color:#fff; transform:translateY(-1px); }
.btn-outline{ background:transparent; border-color:var(--line); color:var(--blue-deep); }
.btn-outline:hover{ border-color:var(--green); color:var(--green-deep); }
.btn-green{ background:var(--green); color:#fff; }
.btn-green:hover{ background:var(--green-deep); color:#fff; }

.hero-visual{
  position:relative; aspect-ratio:1/1; max-width:360px; justify-self:end;
}

/* article-code chip, DOI benzeri */
.doi-chip{
  font-family:'IBM Plex Mono', monospace;
  font-size:.74rem; color:var(--ink-soft);
  background:var(--surface); border:1px solid var(--line);
  padding:6px 12px; border-radius:999px; display:inline-flex; gap:8px;
}
.doi-chip b{ color:var(--green-deep); }

/* ================= SECTION ================= */
section{ padding:56px 0; }
section.alt{ background:var(--surface-alt); }
section.blue-tint{ background:var(--surface-blue); }
.section-head{ max-width:64ch; margin-bottom:2.2em; }
.section-head h2{ margin-bottom:.3em; }
.section-head .sub{ color:var(--ink-soft); font-size:1.02rem; }

/* ================= CARDS / GRID ================= */
.grid{ display:grid; gap:20px; }
.grid.cols-4{ grid-template-columns:repeat(4,1fr); }
.grid.cols-3{ grid-template-columns:repeat(3,1fr); }
.grid.cols-2{ grid-template-columns:repeat(2,1fr); }

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  box-shadow:var(--shadow);
}
.card .num{
  font-family:'IBM Plex Mono', monospace; font-size:.75rem; color:var(--green-deep);
  font-weight:700; margin-bottom:10px; display:block;
}
.card h3{ margin-bottom:.4em; }
.card p{ color:var(--ink-soft); font-size:.95rem; margin-bottom:0; }

.scope-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--green);
  border-radius:var(--radius-sm);
  padding:18px 20px;
  font-weight:600;
  font-size:.98rem;
  color:var(--blue-deep);
  display:flex; align-items:flex-start; gap:12px;
}
.scope-card .ico{
  width:20px; height:20px; flex:none; margin-top:2px;
}

/* ================= INFO STRIP ================= */
.info-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--surface);
}
.info-strip .wrap{
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:0;
}
.info-strip .item{
  padding:22px 24px;
  border-left:1px solid var(--line);
}
.info-strip .item:first-child{ border-left:none; }
.info-strip .item .lab{
  font-family:'IBM Plex Mono', monospace; font-size:.68rem;
  letter-spacing:.1em; text-transform:uppercase; color:var(--ink-faint);
  display:block; margin-bottom:6px;
}
.info-strip .item .val{ font-weight:700; color:var(--blue-deep); font-size:1.02rem; }

/* ================= CONTENT / ARTICLE LAYOUT (iç sayfalar) ================= */
.page-hero{
  padding:46px 0 34px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, var(--surface-blue) 0%, var(--bg) 100%);
}
.breadcrumb{
  font-size:.82rem; color:var(--ink-faint); margin-bottom:14px;
}
.breadcrumb a{ color:var(--ink-soft); }
.page-hero h1{ margin-bottom:.3em; max-width:36ch; }
.page-hero .sub{ color:var(--ink-soft); max-width:60ch; font-size:1.05rem; }

.content-layout{
  display:grid; grid-template-columns:220px 1fr; gap:48px;
  padding:52px 0 72px; align-items:start;
}
.side-toc{
  position:sticky; top:96px;
  border-left:2px solid var(--line);
  padding-left:18px;
}
.side-toc .stitle{
  font-family:'IBM Plex Mono', monospace; font-size:.68rem;
  letter-spacing:.1em; text-transform:uppercase; color:var(--ink-faint);
  margin-bottom:12px; display:block;
}
.side-toc ul{ list-style:none; padding:0; margin:0; }
.side-toc li{ margin-bottom:9px; }
.side-toc a{
  color:var(--ink-soft); font-size:.9rem; font-weight:600;
  display:block; padding:4px 0;
}
.side-toc a:hover{ color:var(--green-deep); }

.prose{ max-width:70ch; }
.prose h2{
  margin-top:2.2em; padding-top:.2em; scroll-margin-top:100px;
  border-top:1px solid var(--line-soft); padding-top:1.2em;
}
.prose h2:first-child{ border-top:none; margin-top:0; padding-top:0; }
.prose h3{ margin-top:1.6em; color:var(--green-deep); }
.prose ul li::marker{ color:var(--green); }
.prose p{ color:var(--ink); }
.lead-p{
  font-size:1.08rem; color:var(--ink-soft);
  border-left:3px solid var(--green);
  padding:2px 0 2px 18px; margin:0 0 1.6em;
}

.policy-list{ list-style:none; padding:0; margin:0 0 1.4em; }
.policy-list li{
  padding:12px 0 12px 30px; position:relative;
  border-bottom:1px solid var(--line-soft);
  color:var(--ink);
}
.policy-list li:last-child{ border-bottom:none; }
.policy-list li::before{
  content:'';
  position:absolute; left:0; top:19px;
  width:9px; height:9px; border-radius:50%;
  background:var(--green);
}

.note-box{
  background:var(--surface-blue);
  border:1px solid #D3E4F2;
  border-radius:var(--radius-sm);
  padding:18px 20px;
  font-size:.94rem;
  color:var(--blue-deep);
  margin:1.4em 0;
}
.note-box b{ color:var(--blue-deep); }
.warn-box{
  background:#FBF3E7;
  border:1px solid #EFD8A9;
  border-radius:var(--radius-sm);
  padding:18px 20px;
  font-size:.94rem;
  color:#7A5A16;
  margin:1.4em 0;
}

table.data-table{
  width:100%; border-collapse:collapse; margin:1.2em 0 1.8em;
  font-size:.92rem;
}
table.data-table th, table.data-table td{
  text-align:left; padding:11px 14px; border-bottom:1px solid var(--line);
}
table.data-table th{
  font-family:'IBM Plex Mono', monospace; font-size:.7rem;
  letter-spacing:.08em; text-transform:uppercase; color:var(--ink-faint);
  border-bottom:2px solid var(--blue-deep);
}

.step-list{ counter-reset:step; list-style:none; padding:0; margin:0; }
.step-list li{
  counter-increment:step;
  position:relative; padding:6px 0 22px 46px; margin:0;
  border-left:2px solid var(--line);
  margin-left:15px;
}
.step-list li:last-child{ border-left:2px solid transparent; padding-bottom:2px; }
.step-list li::before{
  content:counter(step);
  position:absolute; left:-17px; top:0;
  width:32px; height:32px; border-radius:50%;
  background:var(--surface); border:2px solid var(--blue);
  color:var(--blue-deep); font-weight:700; font-size:.85rem;
  display:flex; align-items:center; justify-content:center;
  font-family:'IBM Plex Mono', monospace;
}
.step-list h4{ margin:0 0 4px; font-size:1.02rem; color:var(--blue-deep); font-family:'Source Sans 3',sans-serif; font-weight:700; }
.step-list p{ margin:0; color:var(--ink-soft); font-size:.94rem; }

/* editor kurulu */
.person-card{
  display:flex; gap:16px; align-items:flex-start;
  padding:20px 0; border-bottom:1px solid var(--line-soft);
}
.person-card:last-child{ border-bottom:none; }
.avatar{
  width:52px; height:52px; border-radius:50%; flex:none;
  background:linear-gradient(135deg,var(--blue),var(--green));
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-family:'Fraunces',serif; font-weight:600; font-size:1.1rem;
}
.person-card .role{
  font-family:'IBM Plex Mono', monospace; font-size:.68rem;
  letter-spacing:.08em; text-transform:uppercase; color:var(--green-deep);
  margin-bottom:3px; display:block; font-weight:700;
}
.person-card .name{ font-weight:700; color:var(--blue-deep); }
.person-card .inst{ color:var(--ink-soft); font-size:.9rem; }

/* placeholder (arşiv / son sayı / duyurular) */
.empty-state{
  text-align:center; padding:70px 24px; background:var(--surface);
  border:1px dashed var(--line); border-radius:var(--radius);
  max-width:640px; margin:0 auto;
}
.empty-state .glyph{ width:56px; height:56px; margin:0 auto 18px; }
.empty-state h3{ margin-bottom:.4em; }
.empty-state p{ color:var(--ink-soft); }

/* iletişim */
.contact-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:start;
}
.contact-item{ display:flex; gap:14px; padding:16px 0; border-bottom:1px solid var(--line-soft); }
.contact-item:last-child{ border-bottom:none; }
.contact-item .ic{ width:22px; height:22px; flex:none; margin-top:3px; color:var(--green-deep); }
.contact-item .lab{
  font-family:'IBM Plex Mono', monospace; font-size:.68rem; letter-spacing:.08em;
  text-transform:uppercase; color:var(--ink-faint); display:block; margin-bottom:3px;
}
.contact-item .val{ font-weight:600; color:var(--ink); }
.map-frame{
  border-radius:var(--radius); overflow:hidden; border:1px solid var(--line);
  aspect-ratio:4/3; background:var(--surface-alt);
  display:flex; align-items:center; justify-content:center;
}

/* ================= FOOTER ================= */
footer.site-footer{
  background:var(--blue-deep);
  color:#C9DCEA;
  margin-top:40px;
}
.footer-top{
  padding:52px 0 36px;
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:36px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-top h4{
  color:#fff; font-family:'IBM Plex Mono', monospace; font-size:.72rem;
  letter-spacing:.1em; text-transform:uppercase; margin-bottom:16px; font-weight:600;
}
.footer-top ul{ list-style:none; padding:0; margin:0; }
.footer-top li{ margin-bottom:9px; }
.footer-top a{ color:#C9DCEA; font-size:.92rem; }
.footer-top a:hover{ color:#fff; }
.footer-brand p{ color:#AFC8DA; font-size:.92rem; max-width:36ch; }
.footer-bottom{
  padding:20px 0; display:flex; justify-content:space-between; align-items:center;
  font-size:.82rem; color:#8FB0C6; flex-wrap:wrap; gap:10px;
}
.footer-bottom a{ color:#8FB0C6; }

/* ================= RESPONSIVE ================= */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero-visual{ justify-self:start; max-width:260px; margin-top:8px; }
  .content-layout{ grid-template-columns:1fr; }
  .side-toc{ position:static; border-left:none; border-top:1px solid var(--line); padding-left:0; padding-top:16px; }
  .info-strip .wrap{ grid-template-columns:repeat(2,1fr); }
  .info-strip .item:nth-child(3){ border-left:none; }
  .grid.cols-4{ grid-template-columns:repeat(2,1fr); }
  .grid.cols-3{ grid-template-columns:repeat(2,1fr); }
  .footer-top{ grid-template-columns:1fr 1fr; }
  .contact-grid{ grid-template-columns:1fr; }
}
@media (max-width: 720px){
  nav.main-nav{
    display:none;
    position:absolute; top:100%; left:0; right:0;
    background:var(--surface); border-bottom:1px solid var(--line);
    box-shadow:var(--shadow); padding:10px 20px 18px;
  }
  nav.main-nav.open{ display:block; }
  nav.main-nav ul{ flex-direction:column; gap:2px; }
  .nav-toggle{
    display:flex; align-items:center; justify-content:center;
    width:40px; height:40px; border-radius:8px; border:1px solid var(--line);
    background:var(--surface); cursor:pointer;
  }
  .header-inner{ position:relative; }
  .top-strip .wrap{ font-size:.74rem; }
  .grid.cols-4, .grid.cols-3, .grid.cols-2{ grid-template-columns:1fr; }
  .info-strip .wrap{ grid-template-columns:1fr; }
  .info-strip .item{ border-left:none; border-top:1px solid var(--line); }
  .info-strip .item:first-child{ border-top:none; }
  .footer-top{ grid-template-columns:1fr; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ transition:none !important; animation:none !important; }
}

/* =========================================================
   Eklenenler: indirilebilir dosyalar + dergi kapağı
   ========================================================= */
.dl-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:14px; margin:18px 0 28px; }
.dl-card{
  display:flex; gap:14px; align-items:flex-start;
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:16px 18px; text-decoration:none; color:var(--ink);
  transition:border-color .15s, transform .15s, box-shadow .15s;
}
.dl-card:hover{ border-color:var(--green); transform:translateY(-1px); box-shadow:var(--shadow); color:var(--ink); }
.dl-card .dl-ic{ flex:none; width:38px; height:38px; border-radius:10px; background:var(--surface-blue); display:grid; place-items:center; }
.dl-card .dl-ic svg{ width:20px; height:20px; }
.dl-card .dl-t{ display:block; font-weight:700; color:var(--blue-deep); line-height:1.3; }
.dl-card .dl-m{ display:block; font-size:.85rem; color:var(--ink-soft); margin-top:2px; }
.dl-card.primary{ background:var(--surface-alt); border-color:var(--green); }
.dl-card.primary .dl-ic{ background:var(--green-tint); }

.cover-frame{
  position:relative; max-width:360px; margin-inline:auto; aspect-ratio:3/4;
  border-radius:var(--radius); overflow:hidden; background:var(--surface-blue);
  box-shadow:var(--shadow); border:1px solid var(--line);
}
.cover-frame img{ width:100%; height:100%; object-fit:cover; display:block; }
.cover-frame .cover-fallback{ position:absolute; inset:0; display:grid; place-items:center; }
.cover-frame img + .cover-fallback{ display:none; }
.cover-frame.no-img img{ display:none; }
.cover-frame.no-img .cover-fallback{ display:grid; }
.cover-frame.no-img:not(:has(.cover-fallback)){ display:none; }