:root{
  --bg:#0f1729; --bg2:#16213e; --card:#ffffff; --ink:#1a2233; --muted:#6b7689;
  --line:#e6e9f0; --brand:#4f7cff; --brand-d:#3a63e0;
  --green:#16a34a; --green-bg:#dcfce7; --red:#dc2626; --red-bg:#fee2e2;
  --amber:#f59e0b; --amber-bg:#fff7ed; --tactic:#7c3aed; --tactic-bg:#f3eaff;
  --shadow:0 1px 3px rgba(15,23,41,.08),0 6px 24px rgba(15,23,41,.06);
}
*{box-sizing:border-box}
body{
  margin:0;font-family:'Inter',system-ui,Segoe UI,Roboto,sans-serif;
  color:var(--ink);background:#eef1f7;line-height:1.5;
}
/* ---------- top bar ---------- */
.topbar{
  background:linear-gradient(135deg,var(--bg),var(--bg2));color:#fff;
  padding:20px clamp(16px,4vw,48px);display:flex;justify-content:space-between;
  align-items:center;gap:24px;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:16px}
.logo{
  width:54px;height:54px;border-radius:14px;display:grid;place-items:center;
  font-weight:800;font-size:20px;background:linear-gradient(135deg,#4f7cff,#7c3aed);
  box-shadow:0 6px 18px rgba(79,124,255,.4);flex-shrink:0;
}
.logo-link{display:flex;flex-shrink:0}
.logo-img{display:block;border-radius:13px;box-shadow:0 6px 18px rgba(79,124,255,.4)}
.topbar h1{font-size:clamp(18px,2.4vw,24px);margin:0;font-weight:700}
.sub{margin:2px 0 0;color:#aab4cf;font-size:13px}
.stats{display:flex;gap:14px;flex-wrap:wrap}
.stat{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
  border-radius:12px;padding:8px 14px;text-align:center;min-width:78px}
.stat b{display:block;font-size:20px;font-weight:800}
.stat span{font-size:11px;color:#aab4cf;text-transform:uppercase;letter-spacing:.04em}
/* ---------- mode bar ---------- */
.modebar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;
  gap:12px;padding:14px clamp(16px,4vw,48px) 0}
.modes{display:flex;gap:8px;background:#fff;padding:5px;border-radius:12px;box-shadow:var(--shadow)}
.mode-btn{border:0;background:transparent;padding:9px 18px;border-radius:9px;font-size:14px;
  font-weight:600;color:var(--muted);cursor:pointer;transition:.15s}
.mode-btn.active{background:var(--brand);color:#fff}
.reset-btn{border:1px solid var(--line);background:#fff;color:var(--muted);padding:9px 14px;
  border-radius:10px;font-size:13px;cursor:pointer}
.reset-btn:hover{color:var(--red);border-color:var(--red)}
/* ---------- filters ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;
  padding:14px clamp(16px,4vw,48px)}
#search{flex:1 1 260px;min-width:200px;padding:11px 14px;border:1px solid var(--line);
  border-radius:11px;font-size:14px;background:#fff;font-family:inherit}
#search:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:#fff;padding:8px 13px;border-radius:20px;
  font-size:13px;font-weight:600;color:var(--muted);cursor:pointer;transition:.15s}
.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}
select{padding:10px 12px;border:1px solid var(--line);border-radius:11px;font-size:14px;
  background:#fff;font-family:inherit;cursor:pointer;color:var(--ink)}
.result-info{padding:0 clamp(16px,4vw,48px);color:var(--muted);font-size:13px;margin-top:4px}
/* ---------- list ---------- */
.list{padding:14px clamp(16px,4vw,48px) 40px;display:grid;
  grid-template-columns:repeat(auto-fill,minmax(420px,1fr));gap:20px;align-items:start}
@media(max-width:520px){.list{grid-template-columns:1fr}}
.card{background:var(--card);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;
  border:1px solid var(--line);display:flex;flex-direction:column}
.card-head{display:flex;align-items:center;gap:8px;padding:14px 16px 0;flex-wrap:wrap}
.badge{font-size:11px;font-weight:700;padding:4px 9px;border-radius:7px;letter-spacing:.02em}
.b-year{background:#eef2ff;color:#4f7cff}
.b-sec-sayisal{background:#e0f2fe;color:#0369a1}
.b-sec-sozel{background:#fef3c7;color:#b45309}
.b-num{background:#f1f5f9;color:#475569}
.b-topic{background:var(--tactic-bg);color:var(--tactic)}
.bookmark{margin-left:auto;border:0;background:transparent;font-size:20px;cursor:pointer;
  color:#cbd3e0;line-height:1;padding:2px}
.bookmark.on{color:var(--amber)}
.qimg-wrap{padding:12px 16px;background:#fff}
.qimg{width:100%;height:auto;border:1px solid var(--line);border-radius:10px;display:block;
  background:#fff}
.qimg.passage{border-style:dashed}
/* options */
.opts{display:flex;gap:8px;flex-wrap:wrap;padding:4px 16px 14px}
.opt{width:42px;height:42px;border-radius:10px;border:1.5px solid var(--line);background:#fff;
  font-weight:700;font-size:16px;color:var(--ink);cursor:pointer;transition:.12s}
.opt:hover{border-color:var(--brand);color:var(--brand)}
.opt.correct{background:var(--green-bg);border-color:var(--green);color:var(--green)}
.opt.wrong{background:var(--red-bg);border-color:var(--red);color:var(--red)}
.opt.disabled{cursor:default;opacity:.65}
.opt.disabled:hover{border-color:var(--line);color:var(--ink)}
.reveal-btn{margin:0 16px 14px;padding:10px;border:1px dashed var(--brand);background:#f5f8ff;
  color:var(--brand-d);font-weight:600;border-radius:10px;cursor:pointer;font-size:14px}
/* explanation */
.solution{border-top:1px solid var(--line);padding:16px;display:none;gap:14px;flex-direction:column}
.solution.show{display:flex}
.ans-line{font-size:14px;font-weight:600}
.ans-pill{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;
  background:var(--green-bg);color:var(--green);font-weight:800;margin-left:6px}
.block-title{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;
  color:var(--muted);margin-bottom:5px;display:flex;align-items:center;gap:6px}
.explain{font-size:14.5px;color:#2a3447;white-space:pre-wrap}
.tactic{background:var(--tactic-bg);border-left:4px solid var(--tactic);border-radius:10px;
  padding:12px 14px}
.tactic .block-title{color:var(--tactic)}
.tactic-text{font-size:14.5px;color:#3b2a5c;font-weight:500;white-space:pre-wrap}
.pending{color:var(--muted);font-style:italic;font-size:14px}
.note{background:var(--amber-bg);border-left:4px solid var(--amber);padding:8px 12px;
  border-radius:8px;font-size:13px;color:#92560a}
.foot{text-align:center;color:var(--muted);font-size:12px;padding:24px;border-top:1px solid var(--line)}
.empty{text-align:center;color:var(--muted);padding:60px 20px;font-size:16px}
/* quiz mode tweaks */
body.quiz .reveal-btn{display:none}
.feedback{font-size:13px;font-weight:600;padding:2px 16px 0}
.feedback.ok{color:var(--green)} .feedback.no{color:var(--red)}

/* ---------- tıklanabilir görsel ---------- */
.qimg-wrap.zoomable{cursor:zoom-in}
.qimg-wrap.zoomable .qimg{transition:filter .15s}
.qimg-wrap.zoomable:hover .qimg{filter:brightness(.97)}

/* ---------- büyütülmüş soru (modal) ---------- */
.modal-overlay{position:fixed;inset:0;z-index:100;background:rgba(15,23,41,.62);
  backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;
  gap:14px;padding:24px}
.modal-overlay[hidden]{display:none}
.modal-box{background:#fff;border-radius:18px;width:min(880px,100%);
  max-height:calc(100vh - 48px);display:flex;flex-direction:column;overflow:hidden;
  box-shadow:0 24px 70px rgba(0,0,0,.4)}
.modal-bar{display:flex;align-items:center;justify-content:space-between;
  padding:12px 18px;border-bottom:1px solid var(--line);flex-shrink:0}
.modal-counter{font-weight:700;color:var(--muted);font-size:14px}
.modal-close{border:0;background:#f1f5f9;color:var(--ink);width:34px;height:34px;
  border-radius:9px;font-size:16px;cursor:pointer;line-height:1}
.modal-close:hover{background:var(--red-bg);color:var(--red)}
.modal-body{overflow:auto;padding:8px}
.modal-body .card{box-shadow:none;border:0;border-radius:0}
.modal-body .qimg{border:1px solid var(--line)}
.modal-body .qimg-wrap{cursor:default}
/* oklarla gezinme */
.modal-arrow{flex-shrink:0;width:54px;height:54px;border-radius:50%;border:0;
  background:#fff;color:var(--ink);font-size:30px;line-height:1;cursor:pointer;
  box-shadow:0 6px 20px rgba(0,0,0,.25);display:grid;place-items:center}
.modal-arrow:hover:not(:disabled){background:var(--brand);color:#fff}
.modal-arrow:disabled{opacity:.3;cursor:default}
@media(max-width:760px){
  .modal-overlay{padding:10px;gap:6px}
  .modal-arrow{width:40px;height:40px;font-size:22px}
}