/* ---------- İç sayfalar: ders, okuma ekranı, test, sözlük ---------- */
a.course-card, a.note-card { color: inherit; }
.page-head { padding-top: 40px; }
.page-head.narrow { max-width: 860px; }
.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.crumbs a { color: var(--blue); }
.crumbs span { margin: 0 6px; }
.course-grid.cols-3 { margin-top: 24px; }
.filter-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 24px; }
a.chip { display: inline-block; }
.chip.on { background: var(--blue); color: #fff; }
.note-course { font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--blue); display: block; margin-top: 6px; }
.note-card .note-course + h3 { margin-top: 2px; }
.note-thumb.has-img { padding: 0; background: #dfe9f7; }
.note-thumb.has-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.page-head .note-grid { margin-top: 8px; }
.btn-soft { background: var(--blue-soft); color: var(--blue); border-color: transparent; height: 48px; }
.btn-soft:hover { background: #d4e5fb; }
.btn-soft .ico { font-size: 24px; }
.search-card.inline { margin-top: 20px; }

/* Ders sayfası */
.course-hero { display: flex; gap: 24px; align-items: center; margin-bottom: 36px; }
.course-icon.big { width: 112px; height: 112px; font-size: 64px; border-radius: 16px; }
.toc-title { font-size: 22px; font-weight: 800; color: var(--navy); margin: 32px 0 14px; }
.toc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.toc-list a { display: flex; align-items: center; gap: 16px; padding: 16px 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: box-shadow .2s, border-color .2s; }
.toc-list a:hover { box-shadow: var(--shadow); border-color: #c9d8f0; }
.toc-num { flex: none; width: 40px; height: 40px; border-radius: 50%; background: var(--blue-soft); color: var(--blue); font-weight: 700; display: grid; place-items: center; }
.toc-body { flex: 1; min-width: 0; }
.toc-body strong { display: block; color: var(--navy); font-size: 17px; }
.toc-body small { display: block; color: var(--muted); font-size: 14px; margin-top: 2px; }
.toc-min { flex: none; font-size: 13px; color: var(--muted); }
.test-links { display: flex; flex-wrap: wrap; gap: 12px; }

/* Kitap gibi okuma ekranı */
.read-progress { position: fixed; top: 60px; left: 0; height: 3px; width: 0; background: var(--blue); z-index: 60; transition: width .1s; }
.reader { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 40px; padding-top: 32px; align-items: start; }
.toc { position: sticky; top: 84px; max-height: calc(100vh - 100px); overflow: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.toc-course { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--navy); padding-bottom: 12px; margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.toc-course .ico { font-size: 28px; }
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc li a { display: flex; gap: 10px; padding: 9px 8px; border-radius: 6px; font-size: 14px; line-height: 1.35; color: var(--text); }
.toc li a span { flex: none; width: 22px; color: var(--muted); font-weight: 600; }
.toc li a:hover { background: var(--blue-soft); }
.toc li.cur a { background: var(--blue-soft); color: var(--blue); font-weight: 600; }
.toc li.cur a span { color: var(--blue); }

.book {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 48px clamp(20px, 6vw, 72px) 40px; box-shadow: 0 10px 40px rgba(15, 47, 107, .08);
  background-image: linear-gradient(90deg, rgba(15,47,107,.05), transparent 24px);
}
.book-head { margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.book-chapter { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.book-head h1 { font-size: clamp(30px, 4vw, 44px); line-height: 1.12; letter-spacing: -.02em; color: var(--navy); margin: 10px 0 12px; font-weight: 800; }
.book-summary { font-size: 19px; color: var(--muted); }
.book-meta { margin-top: 12px; font-size: 14px; color: var(--muted); }
.book-cover { margin: 0 0 28px; }
.book-cover img { width: 100%; border-radius: 10px; display: block; }
.book .prose > p:first-of-type::first-letter { float: left; font-size: 3.6em; line-height: .85; padding: 6px 10px 0 0; font-weight: 700; color: var(--blue); font-family: "Inter", sans-serif; }
.book-test { display: flex; align-items: center; gap: 16px; margin-top: 36px; padding: 18px 20px; background: var(--blue-soft); border-radius: var(--radius); flex-wrap: wrap; }
.book-test .ico { font-size: 44px; }
.book-test div { flex: 1; min-width: 200px; }
.book-test strong { display: block; color: var(--navy); font-size: 17px; }
.book-test span { color: var(--muted); font-size: 14px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.pager a { display: block; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .2s, box-shadow .2s; }
.pager a:hover { border-color: var(--blue); box-shadow: var(--shadow); }
.pager small { display: block; color: var(--blue); font-weight: 600; font-size: 13px; margin-bottom: 4px; }
.pager strong { color: var(--navy); }
.pager .next { text-align: right; grid-column: 2; }

/* Test */
.score-card { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin: 24px 0; padding: 20px 24px; background: var(--blue-soft); border-radius: var(--radius); }
.score-card strong { font-size: 36px; color: var(--navy); }
.score-card span { flex: 1; color: var(--muted); font-size: 18px; }
.quiz { margin-top: 24px; display: grid; gap: 18px; }
.q { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 0; min-width: 0; }
.q legend { font-weight: 700; color: var(--navy); font-size: 17px; padding: 0 8px; display: flex; gap: 10px; align-items: flex-start; }
.qn { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--blue); color: #fff; font-size: 14px; display: grid; place-items: center; }
.q-img { max-width: 100%; border-radius: 8px; margin: 8px 0; }
.opt { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px; margin-top: 10px; cursor: pointer; }
.opt:hover { border-color: var(--blue); }
.opt b { flex: none; width: 26px; height: 26px; display: grid; place-items: center; background: #f1f4f9; border-radius: 50%; font-size: 13px; }
.opt.is-correct { background: #e8f7ee; border-color: #36a265; }
.opt.is-wrong { background: #fdecec; border-color: #d65353; }
.explain { margin: 12px 0 0; font-size: 14px; color: var(--muted); }

/* Sözlük sayfası */
.gl-search { margin: 20px 0; max-width: 480px; }
.gl-table { display: grid; gap: 8px; }
.gl-row { display: grid; grid-template-columns: 220px 220px 1fr; gap: 16px; padding: 14px 16px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.gl-row[hidden] { display: none; }
.gl-en { font-weight: 700; color: var(--navy); }
.gl-tr { color: var(--blue); font-weight: 500; }
.gl-def { color: var(--muted); font-size: 15px; }

@media (max-width: 900px) {
  .reader { grid-template-columns: 1fr; gap: 20px; }
  .toc { position: static; max-height: none; }
  .toc ol { display: none; }
  .toc.open ol { display: block; }
  .toc-course { border: 0; padding: 0; margin: 0; }
  .gl-row { grid-template-columns: 1fr 1fr; }
  .gl-def { grid-column: 1 / -1; }
  .course-hero { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .book { padding: 28px 18px 24px; }
  .prose, body.prose { font-size: 17px; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: auto; text-align: left; }
  .toc-min { display: none; }
}

/* Bölümler (Ders > Bölüm > Not) */
.sec { margin-bottom: 28px; }
.sec-head { margin: 8px 0 12px; padding-left: 14px; border-left: 4px solid var(--blue); }
.sec-no { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--blue); }
.sec-head h3 { font-size: 20px; color: var(--navy); font-weight: 800; letter-spacing: -.01em; }
.sec-head p { color: var(--muted); font-size: 14px; margin-top: 2px; }
.toc-sec { margin: 14px 0 4px; padding: 0 8px; font-weight: 700; font-size: 13px; color: var(--navy); }
.toc-sec small { display: block; color: var(--blue); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.toc li a span { width: 30px; }
.book-no { display: block; margin-top: 8px; font-size: 13px; color: var(--muted); }

/* Fonetik alfabe ve sayılar */
.gl-jump { margin: 14px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.phon { padding-bottom: 20px; }
.phon-two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 12px; }
.phon-two .table-wrap { margin-top: 0; }
.toc-title.sm { font-size: 18px; margin-top: 28px; }
.table-wrap { overflow-x: auto; margin-top: 12px; }
table.plain { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
table.plain th, table.plain td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line); font-size: 15px; }
table.plain th { background: #f4f7fc; color: var(--navy); font-size: 13px; }
table.plain tr:last-child td { border-bottom: 0; }
table.plain td.num { font-weight: 800; color: var(--blue); font-size: 17px; }

@media (max-width: 700px) { .phon-two { grid-template-columns: 1fr; } }

/* Etkileşimli test ve Yanlışlarım defteri */
button.opt { width: 100%; text-align: left; background: #fff; font: inherit; color: inherit; cursor: pointer; }
button.opt:disabled { cursor: default; opacity: 1; }
.opt.sel { border-color: var(--blue); background: var(--blue-soft); }
.opt.sel b { background: var(--blue); color: #fff; }
.opt.is-correct b { background: #36a265; color: #fff; }
.opt.is-wrong b { background: #d65353; color: #fff; }
.quiz-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin: 20px 0 4px; padding: 12px 16px; background: #f4f7fc; border-radius: var(--radius); font-size: 14px; }
.quiz-bar[hidden] { display: none; }
.quiz-toggle { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.quiz-prog { color: var(--muted); font-weight: 600; }
#quiz-app > .btn, #wrong-app > .btn { margin-top: 18px; }
.fb { margin-top: 12px; padding: 12px 14px; border-radius: 8px; font-size: 15px; }
.fb[hidden] { display: none; }
.fb.ok { background: #e8f7ee; color: #1d6b40; }
.fb.bad { background: #fdecec; color: #8c2323; }
.fb p { margin: 6px 0 0; color: var(--text); }
.fb .ok-note { color: #1d6b40; font-weight: 600; }
.q-meta { margin: 4px 0 8px; font-size: 13px; color: var(--muted); }
.q-x { margin-top: 12px; font-size: 13px; }
.quiz-note { margin: 0 0 12px; color: var(--muted); }
.quiz-note a { color: var(--blue); font-weight: 600; }
.muted-note { font-size: 13px; color: var(--muted); margin: 6px 0 0; }
.empty-state { margin-top: 24px; padding: 32px; text-align: center; background: #fff; border: 1px dashed #cfd8e6; border-radius: var(--radius); }
.empty-state p { color: var(--muted); margin: 6px 0 16px; }
.wrong-badge { display: inline-block; min-width: 22px; padding: 1px 7px; border-radius: 999px; background: var(--blue); color: #fff; font-size: 12px; text-align: center; margin-left: 6px; }
.wrong-badge[hidden] { display: none; }

.q-x { background: none; border: 0; padding: 0; font: inherit; font-size: 13px; color: #c43b3b; cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
.q-x:hover { color: #8c2323; }
.quiz-bar .btn.small { padding: 6px 14px; font-size: 13px; height: auto; background: #fff; color: var(--text); border: 1px solid var(--line); }

.foot-note { opacity: .7; font-size: 12px; }

/* Çerez onayı */
.consent { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 200; max-width: 860px; margin: 0 auto; display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
  background: #0b1f44; color: #e6efff; padding: 16px 18px; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,.3); }
.consent p { margin: 0; flex: 1 1 320px; font-size: 14px; line-height: 1.5; }
.consent a { color: #8cbcff; text-decoration: underline; }
.consent-btns { display: flex; gap: 10px; }
.consent .btn { height: 42px; padding: 0 20px; font-size: 14px; }
.consent .consent-no { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }

/* Uygulamalar */
.app-grid { display: grid; gap: 20px; margin-top: 24px; }
.app-card { display: flex; gap: 20px; padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.app-icon { width: 88px; height: 88px; border-radius: 20px; object-fit: cover; flex: none; background: #eef4fe; }
.app-icon.sm { width: 56px; height: 56px; border-radius: 13px; }
.app-body h2 { font-size: 22px; color: var(--navy); }
.app-tag { color: var(--blue); font-weight: 600; margin: 2px 0 8px; }
.app-body p { color: var(--muted); margin: 0 0 12px; }
.store-btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.store-btn { display: inline-flex; flex-direction: column; justify-content: center; min-width: 140px; height: 48px; padding: 0 18px; border-radius: 8px; background: #0b1f44; color: #fff; font-weight: 700; font-size: 16px; line-height: 1.1; transition: background .15s; }
.store-btn small { font-size: 10px; font-weight: 500; opacity: .8; letter-spacing: .04em; text-transform: uppercase; }
.store-btn:hover { background: var(--blue); }
.app-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.app-mini { display: grid; grid-template-columns: 56px 1fr; gap: 6px 14px; align-items: center; padding: 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.app-mini strong { display: block; color: var(--navy); }
.app-mini small { color: var(--muted); }
.app-mini .store-btns { grid-column: 1 / -1; }

/* İlgili konular, reklam alanı, altbilgi bağlantıları */
.related { padding-top: 32px; }
.ad-slot { margin: 28px 0; text-align: center; }
.ad-slot[hidden] { display: none; }
.ad-slot small { display: block; color: #9aa4b5; font-size: 11px; margin-bottom: 4px; text-transform: uppercase; letter-spacing: .08em; }
.footer-cols { display: flex; flex-wrap: wrap; gap: 40px; padding: 24px 0 28px; border-top: 1px solid rgba(255,255,255,.12); margin-top: 8px; }
.footer-cols > div { display: flex; flex-direction: column; gap: 6px; min-width: 160px; }
.footer-cols strong { color: #fff; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 4px; }
.footer-cols a { color: #c7d4ee; font-size: 14px; }
.footer-cols a:hover { color: #fff; }
@media (max-width: 600px) { .app-card { flex-direction: column; } .consent { left: 8px; right: 8px; bottom: 8px; } }

/* Mağaza */
.shop-closed { max-width: 640px; margin: 24px auto; text-align: center; padding: 48px 28px; background: linear-gradient(180deg, #eef5ff, #fff); border: 1px solid var(--line); border-radius: 16px; }
.shop-closed .ico { font-size: 72px; margin: 0 auto 12px; }
.shop-closed h1 { color: var(--navy); font-size: 32px; font-weight: 800; letter-spacing: -.02em; }
.shop-closed p { color: var(--muted); font-size: 17px; margin: 10px 0 22px; }
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; margin-top: 24px; }
.product-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.product-img { aspect-ratio: 4 / 3; background: #eef4fe; position: relative; }
.product-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-badge { position: absolute; top: 10px; left: 10px; background: var(--blue); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.product-body { padding: 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-body h2 { font-size: 18px; color: var(--navy); }
.product-body p { color: var(--muted); font-size: 14px; margin: 0; }
.product-price { font-size: 20px; font-weight: 800; color: var(--navy); margin-top: auto; padding-top: 8px; }
.product-body .btn { margin-top: 8px; height: 44px; }
.foot-disc { padding: 14px 0 22px; font-size: 12.5px; color: #9fb2d6; border-top: 1px solid rgba(255,255,255,.1); margin-top: 6px; }

/* İçindekiler, materyaller, kaynaklar, geri bildirim */
.prose h2, .prose h3 { scroll-margin-top: 84px; }
.page-toc { margin: 0 0 26px; padding: 16px 20px; background: #f4f8ff; border: 1px solid #dbe7fb; border-radius: 10px; font-family: "Inter", sans-serif; }
.page-toc strong { display: block; color: var(--navy); margin-bottom: 6px; font-size: 14px; letter-spacing: .04em; text-transform: uppercase; }
.page-toc ol { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 28px; }
.page-toc li { break-inside: avoid; padding: 3px 0; font-size: 15px; }
.page-toc li.l3 { padding-left: 16px; font-size: 14px; }
.page-toc a { color: var(--blue); }
.page-toc a:hover { text-decoration: underline; }
.materials { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); font-family: "Inter", sans-serif; }
.mat-title { font-size: 22px; color: var(--navy); margin-bottom: 4px; }
.mat-group { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); margin: 18px 0 8px; }
details.mat { border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px; background: #fff; }
details.mat summary { cursor: pointer; padding: 13px 16px; font-weight: 600; color: var(--navy); list-style: none; display: flex; justify-content: space-between; align-items: center; }
details.mat summary::-webkit-details-marker { display: none; }
details.mat summary::after { content: "+"; font-size: 20px; color: var(--blue); }
details.mat[open] summary::after { content: "–"; }
.mat-body { padding: 4px 16px 16px; }
.mat-body audio, .mat-body video { width: 100%; max-width: 100%; margin: 6px 0 10px; border-radius: 8px; }
.embed { position: relative; padding-bottom: 56.25%; height: 0; margin: 8px 0 12px; }
.embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; border-radius: 10px; }
.note-sources { margin-top: 28px; padding: 18px 20px; background: #fafcff; border: 1px solid var(--line); border-radius: 10px; font-family: "Inter", sans-serif; font-size: 14px; color: var(--muted); }
.note-sources h3 { font-size: 15px; color: var(--navy); margin: 10px 0 6px; }
.note-sources ol.sources { margin: 0; padding-left: 20px; }
.note-sources li { margin-bottom: 4px; word-break: break-word; }
.note-sources a { color: var(--blue); }
.note-sources .upd { margin: 10px 0 0; font-size: 13px; }
.note-feedback { margin-top: 28px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 10px; background: #fff; font-family: "Inter", sans-serif; }
.note-feedback[hidden] { display: none; }
.fb-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; }
.fb-btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 16px; border: 1px solid #cfd8e6; border-radius: 999px; background: #fff; cursor: pointer; font: inherit; font-weight: 600; color: var(--navy); }
.fb-btn svg { width: 18px; height: 18px; }
.fb-btn:hover { border-color: var(--blue); color: var(--blue); }
.fb-btn.on { background: var(--blue); border-color: var(--blue); color: #fff; }
.fb-count { font-size: 13px; color: var(--muted); }
.fb-report-btn { margin-left: auto; background: none; border: 0; color: var(--muted); text-decoration: underline; cursor: pointer; font: inherit; font-size: 14px; }
.fb-reasons { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 14px; color: var(--muted); }
.fb-form { margin-top: 14px; display: grid; gap: 10px; }
.fb-form label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); }
.fb-form textarea, .fb-form input[type=email] { display: block; width: 100%; margin-top: 4px; padding: 9px 12px; border: 1px solid #cfd8e6; border-radius: 6px; font: inherit; font-weight: 400; }
.fb-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.fb-form-btns { display: flex; gap: 10px; }
.fb-form-btns .btn { height: 42px; padding: 0 20px; font-size: 14px; }
.fb-msg { margin: 10px 0 0; font-size: 14px; min-height: 1em; }
.fb-msg.ok { color: #1d6b40; } .fb-msg.err { color: #c43b3b; }
.resume { padding-top: 20px; }
.resume[hidden] { display: none; }
.resume-link { display: flex; align-items: center; gap: 16px; padding: 14px 18px; background: linear-gradient(90deg, #0f2f6b, #1565e8); color: #fff; border-radius: 12px; box-shadow: var(--shadow); }
.resume-ico { width: 44px; height: 44px; border-radius: 10px; background: rgba(255,255,255,.15); display: grid; place-items: center; font-size: 26px; flex: none; }
.resume-ico .ico { filter: brightness(0) invert(1); }
.resume-txt { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.resume-txt small { opacity: .8; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.resume-txt strong { font-size: 17px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.resume-txt em { font-style: normal; opacity: .85; font-size: 13px; }
.resume-go { font-size: 24px; flex: none; }

/* Bilgi kartları */
.fc-setup { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: grid; gap: 14px; margin-top: 20px; }
.fc-setup label { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--navy); }
.fc-setup select { padding: 8px 10px; border: 1px solid #cfd8e6; border-radius: 6px; font: inherit; }
.fc-check input { width: 18px; height: 18px; }
.fc-prog { margin: 14px 0 6px; color: var(--muted); }
.fc-bar { height: 8px; background: #e6eefb; border-radius: 99px; overflow: hidden; }
.fc-bar i { display: block; height: 100%; background: var(--blue); border-radius: 99px; transition: width .3s; }
.fc-card { position: relative; margin: 18px 0; min-height: 280px; cursor: pointer; perspective: 1200px; outline: none; }
.fc-face { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 28px; border-radius: 16px; backface-visibility: hidden; transition: transform .5s; border: 1px solid var(--line); box-shadow: var(--shadow); }
.fc-front { background: #fff; transform: rotateY(0); }
.fc-back { background: linear-gradient(160deg, #eaf2ff, #fff); transform: rotateY(180deg); }
.fc-card.flipped .fc-front { transform: rotateY(-180deg); }
.fc-card.flipped .fc-back { transform: rotateY(0); }
.fc-card:focus-visible .fc-face { border-color: var(--blue); }
.fc-hint { position: absolute; top: 14px; left: 18px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); font-weight: 700; }
.fc-term { font-size: clamp(26px, 5vw, 38px); font-weight: 800; color: var(--navy); letter-spacing: -.01em; }
.fc-def { color: var(--muted); max-width: 520px; margin: 12px 0 0; }
.fc-tap { position: absolute; bottom: 14px; font-size: 13px; color: #9aa4b5; }
.fc-actions { display: flex; gap: 12px; justify-content: center; }
.fc-actions .btn { min-width: 150px; }
.fc-again { color: #c43b3b; border-color: #f1bcbc; }
.fc-keys { text-align: center; color: #9aa4b5; font-size: 13px; }
.fc-reset { justify-self: start; background: none; border: 0; cursor: pointer; text-decoration: underline; font: inherit; color: #c43b3b; }
.fc-end h2 { color: var(--navy); }
@media (prefers-reduced-motion: reduce) { .fc-face { transition: none; } }

/* Etkileşimli anlatımlar */
.demo { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 22px; margin-top: 24px; }
.demo h2 { font-size: 22px; color: var(--navy); }
.demo p { color: var(--muted); }
.demo-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 18px; align-items: start; }
.demo-svg { width: 100%; height: auto; display: block; }
.demo-svg.small { max-height: 190px; }
.sliders { display: grid; gap: 10px; margin-top: 14px; }
.sliders label { display: flex; align-items: center; gap: 12px; font-weight: 600; color: var(--navy); flex-wrap: wrap; }
.sliders input[type=range], .axes-grid input[type=range] { flex: 1; min-width: 160px; accent-color: var(--blue); }
.readout { display: grid; gap: 6px; margin: 10px 0 0; }
.readout div { display: flex; justify-content: space-between; gap: 10px; padding: 8px 12px; background: #f4f8ff; border-radius: 8px; font-size: 14px; }
.readout.inline { grid-template-columns: 1fr 1fr; }
.readout dt { color: var(--muted); } .readout dd { margin: 0; font-weight: 700; color: var(--navy); text-align: right; }
.demo-note { font-size: 13px; margin-top: 12px; }
.axes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 12px 0 16px; }
.axes-grid figure { margin: 0; display: grid; gap: 6px; }
.axes-grid figcaption { font-size: 14px; color: var(--navy); }
.axes-grid figcaption small { color: var(--muted); display: block; min-height: 2.6em; }


@media (prefers-reduced-motion: reduce) { #lift-flow { animation: none; } }
@media (max-width: 800px) { .demo-grid, .axes-grid { grid-template-columns: 1fr; } .page-toc ol { columns: 1; } }
.fb-reasons[hidden], .fb-form[hidden], .note-feedback [hidden] { display: none !important; }

.contact-form { margin-top: 28px; max-width: 560px; }
.contact-form input[type=text] { display: block; width: 100%; margin-top: 4px; padding: 9px 12px; border: 1px solid #cfd8e6; border-radius: 6px; font: inherit; font-weight: 400; }

/* Ders materyalleri: türe özel görünümler */
.mat-body [hidden] { display: none !important; }
.mat-body .mhint { font-size: 14px; color: var(--muted); margin: 4px 0 10px; }
.mlist { margin: 6px 0 0; padding-left: 22px; } .mlist li { margin-bottom: 6px; }
.mdl { margin: 6px 0 0; } .mdl dt { font-weight: 700; color: var(--navy); margin-top: 10px; } .mdl dd { margin: 2px 0 0; }
.mcards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.mcard { min-height: 110px; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: #f4f8ff; font: inherit; font-weight: 600; color: var(--navy); cursor: pointer; text-align: center; }
.mcard.flip { background: var(--navy); color: #fff; border-color: var(--navy); }
.mcard:hover { border-color: var(--blue); }
.mcause { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.mc-head, .mc-row { display: grid; grid-template-columns: 1fr 32px 1fr; gap: 8px; padding: 10px 14px; align-items: center; }
.mc-head { background: #f4f8ff; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); font-weight: 700; }
.mc-row { border-top: 1px solid var(--line); } .mc-row b { text-align: center; color: var(--blue); }
.mqa { border: 1px solid var(--line); border-radius: 8px; margin-bottom: 8px; }
.mqa summary { cursor: pointer; padding: 10px 14px; font-weight: 600; color: var(--navy); }
.mqa p { margin: 0; padding: 0 14px 12px; }
.mpc { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mpc > div { border-radius: 10px; padding: 12px 16px; } .mpc h4 { margin: 0 0 6px; }
.mpc .pro { background: #eaf8ef; } .mpc .con { background: #fdecec; } .mpc ul { margin: 0; padding-left: 20px; }
.mtf, .mquiz, .mfill { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin-bottom: 10px; }
.mq { margin: 0 0 10px; font-weight: 600; color: var(--navy); }
.mbtns { display: flex; flex-wrap: wrap; gap: 8px; }
.mopts { display: grid; gap: 8px; }
.mtf button, .mquiz button, .mfill button, .mmatch button { font: inherit; padding: 9px 14px; border: 1px solid #cfd8e6; border-radius: 8px; background: #fff; color: var(--navy); cursor: pointer; text-align: left; }
.mtf button:hover, .mquiz button:hover, .mfill button:hover, .mmatch button:hover { border-color: var(--blue); }
.mquiz button b { margin-right: 6px; color: var(--blue); }
button.good, .mblank.good { background: #eaf8ef !important; border-color: #2e9e5b !important; }
button.bad, .mblank.bad { background: #fdecec !important; border-color: #d65353 !important; }
.mblank { font: inherit; padding: 4px 8px; margin: 0 4px; border: 1px solid #cfd8e6; border-bottom: 2px solid var(--blue); border-radius: 6px; }
.mres { margin: 10px 0 0; font-weight: 600; } .mres.ok { color: #2e7d4f; } .mres.err { color: #b53b3b; }
.mexp { margin: 6px 0 0; padding: 8px 12px; background: #f4f8ff; border-radius: 8px; font-size: 14px; }
.mmatch { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.mmatch .ml, .mmatch .mr { display: grid; gap: 8px; align-content: start; }
.mmatch button.sel { border-color: var(--blue); background: #e8f0fe; }
.mmatch button.done { background: #eaf8ef; border-color: #2e9e5b; opacity: .8; cursor: default; }
.mmatch button.wrong { background: #fdecec; border-color: #d65353; }
@media (max-width: 560px) { .mpc, .mmatch { grid-template-columns: 1fr; } .mc-head, .mc-row { grid-template-columns: 1fr 24px 1fr; padding: 10px; } }

/* Kitap önerileri */
.book-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr)); gap: 20px; margin-top: 24px; align-items: start; }
.book-card { display: flex; align-items: flex-start; gap: 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.book-cover { flex: 0 0 120px; width: 120px; align-self: flex-start; aspect-ratio: 3 / 4; background: #eef4fe; border-radius: 6px; overflow: hidden; box-shadow: 0 2px 8px rgba(15,47,107,.15); }
.book-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.book-body { display: flex; flex-direction: column; gap: 6px; min-width: 0; flex: 1; }
.book-body h2 { font-size: 18px; line-height: 1.3; color: var(--navy); margin: 0; }
.book-author { font-size: 14px; color: var(--blue); font-weight: 600; }
.book-body p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.book-more summary { cursor: pointer; color: var(--blue); font-size: 14px; font-weight: 600; margin: 2px 0 4px; }
.book-more p { margin-top: 6px; }
.book-body .btn { margin-top: 8px; height: 42px; align-self: flex-start; }
@media (max-width: 480px) { .book-card { flex-direction: column; align-items: center; text-align: left; } .book-cover { flex: none; width: 150px; } .book-body { width: 100%; } }

/* Kitap listesi ve ayrı kitap sayfası */
.book-body h2 a { color: inherit; text-decoration: none; } .book-body h2 a:hover { color: var(--blue); }
.book-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; } .book-actions .btn { margin-top: 0; }
.book-page { display: flex; gap: 28px; align-items: flex-start; margin-bottom: 24px; }
.book-page-cover { flex: 0 0 200px; width: 200px; aspect-ratio: 3 / 4; background: #eef4fe; border-radius: 8px; overflow: hidden; box-shadow: 0 4px 16px rgba(15,47,107,.2); }
.book-page-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.book-page-body { flex: 1; min-width: 0; }
.book-page-body .section-title { margin-bottom: 8px; }
.book-note { font-size: 13px; color: var(--muted); margin: 18px 0; }
@media (max-width: 560px) { .book-page { flex-direction: column; align-items: center; } .book-page-cover { flex: none; width: 170px; } .book-page-body { width: 100%; } }

/* Okundu işareti */
.read-mark { margin: 28px 0 8px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; font-family: "Inter", sans-serif; }
.read-btn { font: inherit; font-weight: 600; padding: 10px 18px; border: 1px solid var(--blue); border-radius: 8px; background: #fff; color: var(--blue); cursor: pointer; }
.read-btn:hover { background: var(--blue-soft); }
.read-btn.on { background: #2e9e5b; border-color: #2e9e5b; color: #fff; }
.read-mark small { color: var(--muted); font-size: 13px; }
.read-count { margin: 10px 0 0; font-weight: 600; color: #2e7d4f; font-size: 14px; }
.read-check { flex: none; margin-left: auto; align-self: center; width: 22px; height: 22px; border-radius: 50%; background: #2e9e5b; color: #fff; font-size: 13px; line-height: 22px; text-align: center; font-weight: 700; }
.toc li a .read-check { width: 20px !important; height: 20px; line-height: 20px; color: #fff !important; font-size: 12px; }
a.note-card { position: relative; }
a.note-card .read-check { position: absolute; top: 10px; right: 10px; margin: 0; }
a.note-card.is-read { border-color: #b9e3c9; }

.read-chip { font: inherit; font-size: 13px; font-weight: 600; margin-left: 10px; padding: 3px 12px; border: 1px solid var(--blue); border-radius: 999px; background: #fff; color: var(--blue); cursor: pointer; vertical-align: middle; }
.read-chip:hover { background: var(--blue-soft); }
.read-chip.on { background: #2e9e5b; border-color: #2e9e5b; color: #fff; }

.book-card { position: relative; }
.book-card .read-check { position: absolute; top: 10px; right: 10px; margin: 0; }
.book-card.is-read { border-color: #b9e3c9; }
.book-actions .read-chip { margin-left: 0; align-self: center; }
.read-note { margin-left: 8px; color: var(--muted); font-size: 13px; }
.book-page-body .read-btn { margin-top: 4px; }

.minfo { margin: 6px 0 0; } .minfo a { display: block; } .minfo img { display: block; width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); }

/* Faydalı linkler */
.ulinks { list-style: none; margin: 8px 0 20px; padding: 0; display: grid; gap: 10px; }
.ulinks a { display: flex; flex-direction: column; gap: 3px; padding: 14px 16px; background: #fff; border: 1px solid var(--line); border-radius: 10px; color: inherit; text-decoration: none; }
.ulinks a:hover { border-color: var(--blue); box-shadow: var(--shadow); }
.ulinks strong { color: var(--navy); } .ulinks strong span { color: var(--blue); }
.ulinks span { color: var(--muted); font-size: 14px; } .ulinks small { color: var(--blue); font-size: 13px; word-break: break-all; }