/* =====================================================================
   BirKitap.Net — site teması (Bootstrap 5.3 üzerine)
   Renkler: kitap kapaklarındaki bordo + logodaki yaprak yeşili, koyu lacivert zemin
   ===================================================================== */

:root {
    --bk-ink: #16232e;
    --bk-ink-2: #22333f;
    --bk-paper: #f4f6f8;
    --bk-maroon: #7b1e2b;
    --bk-maroon-dark: #61161f;
    --bk-leaf: #7e9b22;
    --bk-steel: #2c6a86;
    --bk-line: #d8dee4;
    --bk-muted: #5b6873;
    --bk-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
    --bk-sans: "IBM Plex Sans", "Segoe UI", Roboto, Arial, sans-serif;

    --bs-body-font-family: var(--bk-sans);
    --bs-body-color: var(--bk-ink);
    --bs-body-bg: #fff;
    --bs-link-color: var(--bk-steel);
    --bs-link-color-rgb: 44, 106, 134;
    --bs-link-hover-color: var(--bk-maroon);
    --bs-link-hover-color-rgb: 123, 30, 43;
    --bs-border-color: var(--bk-line);
}

body { font-size: 1rem; line-height: 1.6; }
h1, h2, h3, .serif { font-family: var(--bk-serif); font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 3.2vw, 2.6rem); line-height: 1.15; }
h2 { font-size: clamp(1.45rem, 2.2vw, 1.85rem); line-height: 1.2; }
h3 { font-size: 1.2rem; line-height: 1.3; }

a { text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--bk-leaf); outline-offset: 2px; }

/* ---------- Butonlar ---------- */
.btn-satin {
    --bs-btn-bg: var(--bk-maroon);
    --bs-btn-border-color: var(--bk-maroon);
    --bs-btn-color: #fff;
    --bs-btn-hover-bg: var(--bk-maroon-dark);
    --bs-btn-hover-border-color: var(--bk-maroon-dark);
    --bs-btn-hover-color: #fff;
    --bs-btn-active-bg: var(--bk-maroon-dark);
    --bs-btn-active-border-color: var(--bk-maroon-dark);
    font-weight: 600;
}
.btn-ink {
    --bs-btn-bg: var(--bk-ink);
    --bs-btn-border-color: var(--bk-ink);
    --bs-btn-color: #fff;
    --bs-btn-hover-bg: var(--bk-ink-2);
    --bs-btn-hover-border-color: var(--bk-ink-2);
    --bs-btn-hover-color: #fff;
}

/* ---------- Üst kısım ---------- */
.site-header { background: #fff; border-bottom: 1px solid var(--bk-line); }
.site-header .navbar { padding-top: .9rem; padding-bottom: .9rem; }
.site-header .navbar-brand img { height: 52px; width: auto; }
.site-header .nav-link {
    color: var(--bk-ink);
    font-weight: 500;
    padding: .5rem .9rem !important;
    border-bottom: 2px solid transparent;
}
.site-header .nav-link:hover { color: var(--bk-maroon); }
.site-header .nav-link.active { border-bottom-color: var(--bk-leaf); }

.yazar-rozet { display: flex; align-items: center; gap: .75rem; text-decoration: none; color: var(--bk-ink); }
.yazar-rozet img {
    width: 52px; height: 52px; object-fit: cover; border-radius: 50%;
    border: 3px solid var(--bk-leaf);
}
.yazar-rozet strong { display: block; line-height: 1.2; }
.yazar-rozet small { color: var(--bk-muted); line-height: 1.25; display: block; }

/* ---------- Anasayfa: kitap vitrini ---------- */
.vitrin { background: var(--bk-ink); color: #e9eef2; padding: 3.5rem 0 2.5rem; }
.vitrin .carousel-item { min-height: 400px; }
.vitrin-kapak {
    width: 100%; max-width: 280px; height: auto;
    border-radius: 2px 6px 6px 2px;
    box-shadow: -6px 0 0 rgba(0,0,0,.25) inset, 0 24px 40px rgba(0,0,0,.45);
    display: block; margin: 0 auto;
}
.vitrin h2 { color: #fff; font-size: clamp(1.8rem, 3vw, 2.5rem); margin-bottom: .25rem; }
.vitrin .alt-baslik { color: #b7c3cc; font-size: 1.05rem; margin-bottom: 1.25rem; }
.vitrin-ozet {
    max-height: 15.5rem; overflow: hidden; position: relative;
    color: #d4dce2; font-size: .98rem; line-height: 1.65;
}
.vitrin-ozet::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 4rem;
    background: linear-gradient(rgba(22,35,46,0), var(--bk-ink));
}
.vitrin .btn-outline-light { font-weight: 500; }

/* Kapak küçük resimleri carousel sekmesi olarak (eski sitedeki küçük resim menüsünün karşılığı) */
.kapak-sekmeler { display: flex; gap: .75rem; justify-content: center; margin-top: 1.25rem; flex-wrap: wrap; }
.kapak-sekmeler button {
    background: none; border: 2px solid transparent; padding: 0; border-radius: 4px;
    opacity: .55; transition: opacity .2s, border-color .2s;
}
.kapak-sekmeler button img { width: 52px; height: 76px; object-fit: cover; display: block; border-radius: 2px; }
.kapak-sekmeler button:hover { opacity: .85; }
.kapak-sekmeler button.active { opacity: 1; border-color: var(--bk-leaf); }

/* ---------- Bölümler ---------- */
.bolum { padding: 3.5rem 0; }
.bolum-gri { background: var(--bk-paper); }
.bolum-baslik { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1.75rem; flex-wrap: wrap; }
.bolum-baslik h2 { margin: 0; padding-left: .85rem; border-left: 4px solid var(--bk-leaf); }

/* Yazar + son makale */
.yazar-makale { display: flex; gap: 1.1rem; padding: 1.25rem 0; border-top: 1px solid var(--bk-line); }
.yazar-makale:first-child { border-top: 0; }
.yazar-makale > img {
    width: 72px; height: 72px; flex: 0 0 72px; object-fit: cover; border-radius: 50%;
    border: 3px solid var(--bk-leaf);
}
.yazar-makale .ad { font-weight: 600; }
.yazar-makale .unvan { color: var(--bk-muted); font-size: .9rem; }
.yazar-makale h3 { font-size: 1.15rem; margin: .5rem 0 .3rem; }
.yazar-makale h3 a { color: var(--bk-ink); text-decoration: none; }
.yazar-makale h3 a:hover { color: var(--bk-maroon); text-decoration: underline; }
.yazar-makale p { color: var(--bk-muted); margin-bottom: .4rem; }

/* Makale listesi */
.makale-satir { padding: 1.1rem 0; border-bottom: 1px solid var(--bk-line); }
.makale-satir h3 { margin: 0 0 .25rem; font-size: 1.2rem; }
.makale-satir h3 a { color: var(--bk-ink); text-decoration: none; }
.makale-satir h3 a:hover { color: var(--bk-maroon); text-decoration: underline; }
.makale-satir .meta { color: var(--bk-muted); font-size: .88rem; }

/* Videolar */
.video-kart { display: block; text-decoration: none; color: var(--bk-ink); }
.video-kart .kapak { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 6px; background: #000; }
.video-kart .kapak img { width: 100%; height: 100%; object-fit: cover; opacity: .92; transition: opacity .2s; }
.video-kart .oynat {
    position: absolute; inset: 0; margin: auto; width: 58px; height: 58px; border-radius: 50%;
    background: rgba(123,30,43,.92); display: grid; place-items: center;
}
.video-kart .oynat::before {
    content: ""; margin-left: 5px;
    border-left: 18px solid #fff; border-top: 11px solid transparent; border-bottom: 11px solid transparent;
}
.video-kart:hover .kapak img { opacity: 1; }
.video-kart p { margin: .7rem 0 0; font-size: .95rem; line-height: 1.5; }
.video-kart:hover p { color: var(--bk-maroon); }
.ratio iframe { border: 0; }

/* ---------- Kitap detay ---------- */
.sayfa-ust { background: var(--bk-paper); border-bottom: 1px solid var(--bk-line); padding: 2.25rem 0 1.75rem; }
.sayfa-ust .breadcrumb { font-size: .88rem; margin-bottom: .6rem; }
.kitap-kapak { width: 100%; max-width: 300px; box-shadow: 0 18px 34px rgba(22,35,46,.28); border-radius: 2px 6px 6px 2px; }
@media (min-width: 992px) { .yapiskan { position: sticky; top: 1.5rem; } }
.icerik-blok { margin-bottom: 2.5rem; }
.icerik-blok > h2 { font-size: 1.35rem; padding-bottom: .5rem; border-bottom: 1px solid var(--bk-line); margin-bottom: 1rem; }

/* ---------- Okuma metni (makale, kitap içeriği, yazar hakkında) ---------- */
.okuma { font-family: var(--bk-serif); font-size: 1.12rem; line-height: 1.75; max-width: 70ch; overflow-wrap: anywhere; }
.okuma p { margin-bottom: 1.1em; }
.okuma img { max-width: 100%; height: auto; border-radius: 4px; }
.okuma iframe { max-width: 100%; }
.okuma h2, .okuma h3 { margin-top: 1.6em; }
.okuma blockquote { border-left: 3px solid var(--bk-leaf); padding-left: 1rem; color: var(--bk-muted); }
.okuma .ql-align-center { text-align: center; }
.okuma .ql-align-right { text-align: right; }
.okuma .ql-align-justify { text-align: justify; }

.makale-meta { color: var(--bk-muted); font-size: .92rem; display: flex; flex-wrap: wrap; gap: .4rem 1.25rem; }

.paylas a {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 2.4rem; height: 2.4rem; padding: 0 .75rem; border-radius: 999px;
    border: 1px solid var(--bk-line); color: var(--bk-ink); text-decoration: none; font-size: .88rem; font-weight: 500;
}
.paylas a:hover { border-color: var(--bk-ink); }

.yazar-kart { border: 1px solid var(--bk-line); border-radius: 8px; padding: 1.5rem; text-align: center; background: #fff; }
.yazar-kart img { width: 110px; height: 110px; object-fit: cover; border-radius: 50%; border: 4px solid var(--bk-leaf); }

/* Belgeler galerisi */
.belge-kart { display: block; border: 1px solid var(--bk-line); border-radius: 6px; overflow: hidden; background: #fff; }
.belge-kart img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .25s; }
.belge-kart:hover img { transform: scale(1.03); }

/* ---------- Alt kısım ---------- */
.site-footer { background: var(--bk-ink); color: #b7c3cc; padding: 3rem 0 1.5rem; margin-top: 0; border-top: 4px solid var(--bk-leaf); }
.site-footer h3 { color: #fff; font-family: var(--bk-sans); font-size: 1rem; font-weight: 600; margin-bottom: .9rem; }
.site-footer a { color: #dfe6eb; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .45rem; }
.site-footer .alt-cizgi { border-top: 1px solid rgba(255,255,255,.12); margin-top: 2rem; padding-top: 1.25rem; font-size: .85rem; }

.bos-durum { padding: 3rem 1rem; text-align: center; color: var(--bk-muted); }

@media (max-width: 991.98px) {
    .vitrin .carousel-item { min-height: 0; }
    .vitrin-kapak { max-width: 200px; }
    .site-header .navbar-brand img { height: 42px; }
}

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