/* Belge destesi: seçilen belge öne gelir; orijinal belge her zaman erişilebilir. */
#sertifikalar{scroll-margin-top:100px}
.cert-viewer-open{overflow:hidden}
.cert-stack{--cert-spread:1;--cert-angle-scale:1;--cert-ease:cubic-bezier(.2,0,0,1)}
.cert-stack [hidden]{display:none!important}
.cert-stack-stage{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.cert-stack-sheet{min-width:0;color:var(--ink)}
.cert-stack-sheet img{display:block;width:100%;aspect-ratio:450/630;height:auto;object-fit:contain;background:#e8e5dd;border:1px solid #b7c6cc55}
.cert-stack-fallback-copy{display:block;padding-top:18px}
.cert-stack h3{margin:0 0 16px;font:400 clamp(32px,3.4vw,54px)/1.08 Alike,Georgia,serif;letter-spacing:-.025em;overflow-wrap:anywhere}
.cert-stack-description{max-width:36ch;margin:0 0 25px;color:var(--muted);font-size:18px;line-height:1.6;overflow-wrap:anywhere}
.cert-stack-meta{display:grid;gap:12px;margin:0 0 25px}
.cert-stack-meta div{display:grid;gap:5px}
.cert-stack-meta dt{color:var(--muted);font:11px/1.5 'IBM Plex Mono',monospace;letter-spacing:.06em;text-transform:uppercase}
.cert-stack-meta dd{margin:0;color:var(--ink);font-size:14px;line-height:1.6;overflow-wrap:anywhere}
.cert-stack-copy{display:none}
.cert-stack.is-enhanced .cert-stack-layout{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:clamp(30px,5vw,90px)}
.cert-stack.is-enhanced .cert-stack-stage{position:relative;display:grid;place-items:center;min-height:530px;perspective:1100px;isolation:isolate}
.cert-stack.is-enhanced .cert-stack-stage:before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse,#3fa9ff18,transparent 67%);pointer-events:none}
.cert-stack.is-enhanced .cert-stack-sheet{position:absolute;width:clamp(200px,24vw,330px);transform:translateX(calc(var(--cert-x,0px) * var(--cert-spread))) translateY(var(--cert-y,0px)) rotate(calc(var(--cert-rotation,-2deg) * var(--cert-angle-scale)));filter:brightness(var(--cert-brightness,1));transition:transform .55s var(--cert-ease),filter .4s var(--cert-ease);box-shadow:0 20px 55px #0007;pointer-events:none}
.cert-stack.is-enhanced .cert-stack-sheet.is-active{pointer-events:auto}
.cert-stack.is-enhanced .cert-stack-sheet.is-back-hidden{visibility:hidden}
.cert-stack.is-enhanced .cert-stack-sheet img{border-radius:2px}
.cert-stack.is-enhanced .cert-stack-fallback-copy{display:none}
.cert-stack.is-enhanced .cert-stack-copy{display:block;min-width:0}
.cert-stack-picker{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}
.cert-stack-picker button{flex:0 1 calc(50% - 5px);min-width:0;min-height:48px;padding:12px 16px;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--ink);font:13px/1.4 'IBM Plex Mono',monospace;overflow-wrap:anywhere;text-align:center;transition:border-color .18s,background .18s,color .18s}
.cert-stack-picker button:hover{border-color:#5aa9ff88}
.cert-stack-picker button[aria-pressed=true]{color:var(--accent);border-color:var(--accent);background:#122238;box-shadow:0 0 25px -15px #3fa9ff88}
.cert-stack-open{display:inline-flex;align-items:center;gap:20px;min-height:48px;margin-top:25px;padding:9px 0;color:var(--accent);font-size:15px}
.cert-stack-open span{transition:transform .25s var(--cert-ease)}
.cert-stack-open:hover span{transform:translate(3px,-3px)}
.cert-stack button:focus-visible,.cert-stack a:focus-visible{outline:2px solid var(--accent);outline-offset:5px}
.cert-viewer{width:min(760px,calc(100% - 32px));max-height:calc(100dvh - 32px);padding:24px;border:1px solid var(--line);border-radius:12px;background:#0d1117;color:var(--ink);box-shadow:0 35px 100px #0008;overscroll-behavior:contain}
.cert-viewer::backdrop{background:#07090ce8;backdrop-filter:blur(8px)}
.cert-viewer-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:22px}
.cert-viewer-bar h2{margin:0;font:400 clamp(24px,3vw,34px)/1.2 Alike,Georgia,serif;overflow-wrap:anywhere}
.cert-viewer-bar button{display:flex;align-items:center;gap:15px;min-height:44px;padding:10px 14px;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--ink);font-size:13px;flex:none}
.cert-viewer-bar button span{font-size:22px}
.cert-viewer>img{display:block;max-width:100%;width:auto;height:auto;max-height:calc(100dvh - 190px);margin:auto;object-fit:contain}
.cert-viewer-original{display:inline-flex;gap:14px;align-items:center;min-height:44px;margin-top:18px;color:var(--accent);font-size:13px}
.cert-viewer[open]{animation:cert-viewer-enter .32s var(--cert-ease) both}
@keyframes cert-viewer-enter{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}
@media(max-width:900px){.cert-stack-stage{grid-template-columns:1fr 1fr}.cert-stack.is-enhanced .cert-stack-layout{gap:30px}.cert-stack.is-enhanced .cert-stack-stage{min-height:420px}.cert-stack.is-enhanced .cert-stack-sheet{width:clamp(180px,24vw,230px)}}
@media(max-width:700px){.cert-stack{--cert-spread:.5}.cert-stack.is-enhanced .cert-stack-layout{grid-template-columns:1fr;gap:24px}.cert-stack.is-enhanced .cert-stack-stage{min-height:clamp(320px,70vw,470px)}.cert-stack.is-enhanced .cert-stack-sheet{width:clamp(148px,43vw,225px)}.cert-stack-copy{text-align:center}.cert-stack-description{margin-inline:auto;font-size:16px}.cert-stack-picker{max-width:420px;margin-inline:auto}.cert-stack-meta{max-width:36ch;margin-inline:auto}.cert-stack h3{font-size:34px}.cert-viewer{padding:16px}.cert-viewer-bar{gap:12px;margin-bottom:16px}.cert-viewer-bar button{gap:8px;padding:8px 12px}.cert-stack-fallback-copy h3{font-size:22px}.cert-stack-fallback-copy .cert-stack-description{font-size:14px}}
@media(max-width:700px){
  /* Keep the document and its controls in one row; metadata follows below. */
  .cert-stack.is-enhanced:has(.cert-stack-picker){--cert-spread:.18;--cert-angle-scale:.5}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-layout{grid-template-columns:minmax(0,1fr) minmax(112px,.72fr);column-gap:18px;row-gap:22px;align-items:start}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-stage{grid-column:1;grid-row:1;min-width:0;min-height:clamp(240px,65vw,340px)}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-sheet{width:clamp(104px,calc(100% - 30px),208px)}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-copy{display:contents}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-picker{grid-column:2;grid-row:1;align-self:center;display:grid;grid-template-columns:minmax(0,1fr);gap:8px;max-height:min(288px,72vw);max-width:none;margin:0;padding:4px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-picker button{width:100%;min-height:48px;padding:6px 8px;font-size:12px}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-details{grid-column:1 / -1;grid-row:2;text-align:left;padding-right:44px}
  .cert-stack.is-enhanced:has(.cert-stack-picker) h3{margin-bottom:12px;font-size:28px}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-description{max-width:none;margin:0 0 18px;font-size:15px}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-meta{grid-template-columns:minmax(0,1.8fr) minmax(80px,1fr);gap:16px;max-width:none;margin:0}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-meta dd{font-size:12px}
  .cert-stack.is-enhanced:has(.cert-stack-picker) .cert-stack-open{grid-column:1 / -1;grid-row:3;justify-self:start;margin-top:0}
}
@media(prefers-reduced-motion:reduce){.cert-stack,.cert-stack *, .cert-viewer{animation:none!important;transition:none!important}.motion .cert-stack[data-rv]{opacity:1;transform:none}}