/* ==========================================================================
   Kitap Sandığı — tasarım sistemi
   Cilt bezi ve yaldız: koyu şişe yeşili zemin, pirinç vurgu.
   Karanlık tema varsayılan; html[data-theme="light"] aydınlık sürüm.
   ========================================================================== */

:root {
  --bg:       #0E211D;
  --bg-2:     #122A25;
  --raise:    #17352E;
  --ink:      #EFE7D7;
  --ink-soft: #A3B8AE;
  --brass:    #D9B45F;
  --brass-2:  #B08A38;
  --seal:     #C9645A;
  --rule:     rgba(217, 180, 95, .22);
  --shadow:   0 18px 40px rgba(0, 0, 0, .35);

  --serif: "Bodoni Moda", Georgia, "Times New Roman", serif;
  --text:  Literata, Georgia, serif;

  --wrap: 1080px;
  --gut:  22px;
}

html[data-theme="light"] {
  --bg:       #E8E1D2;
  --bg-2:     #F1EBDE;
  --raise:    #FBF7EE;
  --ink:      #17251F;
  --ink-soft: #57685F;
  --brass:    #8A6420;
  --brass-2:  #6B4C13;
  --seal:     #9B3E33;
  --rule:     rgba(23, 37, 31, .16);
  --shadow:   0 14px 34px rgba(23, 37, 31, .12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--text);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  background-image:
    radial-gradient(1100px 520px at 78% -12%, rgba(217, 180, 95, .10), transparent 62%),
    radial-gradient(760px 420px at 4% 8%, rgba(217, 180, 95, .05), transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink);
}

p { max-width: 68ch; }

a {
  color: var(--brass);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: color .2s, border-color .2s;
}
a:hover { color: var(--ink); border-color: var(--brass); }

:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; border-radius: 2px; }

img { max-width: 100%; height: auto; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }

.atla {
  position: absolute; left: -9999px;
  background: var(--brass); color: var(--bg);
  padding: 10px 16px; border: 0; z-index: 200;
}
.atla:focus { left: 12px; top: 12px; }

/* ---------- üst bant ---------- */

.topbar {
  position: sticky; top: 0; z-index: 60;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(9px);
  backdrop-filter: blur(9px);
  border-bottom: 1px solid var(--rule);
}
.topbar-in { display: flex; align-items: center; gap: 18px; height: 66px; }

.mark { display: flex; align-items: center; gap: 11px; border: 0; }
.mark:hover { border: 0; }
.mark svg { display: block; width: 30px; height: 30px; flex: none; color: var(--brass); }
.mark .stack { display: flex; flex-direction: column; line-height: 1.05; }
.mark .word { font-family: var(--serif); font-size: 1.2rem; letter-spacing: .03em; color: var(--ink); }
.mark .sub { font-size: .66rem; letter-spacing: .18em; color: var(--ink-soft); margin-top: 3px; }

.nav { margin-left: auto; display: flex; align-items: center; gap: 20px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: var(--ink-soft); font-size: .94rem; white-space: nowrap; border: 0; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--brass); }

.tgl {
  flex: none; background: transparent; cursor: pointer;
  border: 1px solid var(--rule); border-radius: 999px;
  color: var(--ink-soft); font-family: var(--text); font-size: .8rem;
  padding: 5px 12px; transition: border-color .2s, color .2s;
}
.tgl:hover { color: var(--brass); border-color: var(--brass); }

/* ---------- giriş ---------- */

.hero { padding: 74px 0 58px; }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; }

.count {
  font-family: var(--serif);
  font-size: clamp(3.1rem, 8.4vw, 5.6rem);
  line-height: .92; letter-spacing: -.02em; color: var(--brass);
}
.count span {
  display: block; font-family: var(--text); font-size: .9rem; font-weight: 400;
  letter-spacing: .22em; color: var(--ink-soft); margin-top: 14px;
}

.hero h1 { font-size: clamp(1.9rem, 3.5vw, 2.7rem); margin: 26px 0 16px; }
.hero p { color: var(--ink-soft); font-size: 1.03rem; }

.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn {
  border: 1px solid var(--brass); border-radius: 2px;
  padding: 11px 20px; font-size: .95rem; color: var(--brass);
}
.btn:hover { background: var(--brass); color: var(--bg); border-color: var(--brass); }
.btn.ghost { border-color: var(--rule); color: var(--ink-soft); }
.btn.ghost:hover { background: transparent; color: var(--ink); border-color: var(--ink-soft); }

/* raf ve mühür */

.shelf-box { position: relative; }
.shelf { display: flex; align-items: flex-end; gap: 7px; height: 290px; padding: 0 4px 10px; }
.spine {
  flex: 1; border-radius: 2px 2px 0 0; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  writing-mode: vertical-rl; text-orientation: mixed;
  font-family: var(--serif); font-size: .74rem; letter-spacing: .06em;
  color: rgba(245, 238, 222, .82);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .22), inset 3px 0 0 rgba(255, 255, 255, .06);
  padding: 14px 0;
}
.spine i {
  font-style: normal; padding: 12px 0;
  border-top: 1px solid rgba(217, 180, 95, .55);
  border-bottom: 1px solid rgba(217, 180, 95, .55);
}
.s1 { height: 96%; background: #3E5C4F; }
.s2 { height: 84%; background: #6E3B37; }
.s3 { height: 100%; background: #26433C; }
.s4 { height: 78%; background: #7A6330; }
.s5 { height: 92%; background: #3A4A6B; }
.s6 { height: 70%; background: #5A3550; }
.s7 { height: 88%; background: #2F4A45; }

.shelf-board {
  height: 12px; border-radius: 2px;
  background: linear-gradient(180deg, var(--brass-2), rgba(0, 0, 0, .4));
  opacity: .75;
}

.stamp {
  position: absolute; right: -6px; bottom: 28px;
  transform: rotate(-9deg);
  border: 3px solid var(--seal); border-radius: 4px;
  color: var(--seal);
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  padding: 10px 16px; text-align: center;
  font-weight: 600; letter-spacing: .16em; font-size: .86rem;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .28);
}
.stamp small {
  display: block; letter-spacing: .08em; font-weight: 400;
  font-size: .66rem; opacity: .85; margin-top: 3px;
}

@media (prefers-reduced-motion: no-preference) {
  .stamp { animation: press .7s cubic-bezier(.2, .9, .25, 1) .35s both; }
  @keyframes press {
    from { opacity: 0; transform: rotate(-9deg) scale(1.7); }
    to   { opacity: 1; transform: rotate(-9deg) scale(1); }
  }
}

/* ---------- durum şeridi ---------- */

.strip { border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); background: var(--bg-2); }
.strip-in { display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: baseline; padding: 18px 0; }
.strip b { font-family: var(--serif); font-weight: 600; color: var(--brass); }
.strip span { color: var(--ink-soft); font-size: .97rem; }

/* ---------- bölümler ---------- */

.sec { padding: 66px 0; border-bottom: 1px solid var(--rule); }
.sec:last-of-type { border-bottom: 0; }
.sec h2 { font-size: clamp(1.6rem, 3vw, 2.15rem); margin-bottom: 12px; }
.sec .deck { color: var(--ink-soft); margin-bottom: 34px; }

/* yol haritası */

.road { list-style: none; counter-reset: step; border-left: 1px solid var(--rule); margin-left: 9px; }
.road li { counter-increment: step; position: relative; padding: 0 0 30px 30px; }
.road li:last-child { padding-bottom: 0; }
.road li::before {
  content: counter(step);
  position: absolute; left: -10px; top: 2px;
  width: 20px; height: 20px; border-radius: 50%;
  display: grid; place-items: center; font-size: .68rem;
  background: var(--bg); color: var(--ink-soft); border: 1px solid var(--rule);
}
.road li.now::before { background: var(--brass); color: var(--bg); border-color: var(--brass); }
.road h3 { font-size: 1.12rem; margin-bottom: 4px; }
.road p { color: var(--ink-soft); font-size: .97rem; }

.tag {
  display: inline-block; margin-left: 8px; font-size: .72rem; letter-spacing: .1em;
  color: var(--ink-soft); border: 1px solid var(--rule); border-radius: 999px;
  padding: 1px 9px; vertical-align: middle;
}
.tag.on { color: var(--brass); border-color: var(--brass); }

/* uygulama listesi */

.app { display: grid; grid-template-columns: 250px 1fr; gap: 8px 30px; padding: 22px 0; border-top: 1px solid var(--rule); }
.app:last-of-type { border-bottom: 1px solid var(--rule); }
.app h3 { font-size: 1.2rem; }
.app .plat { color: var(--ink-soft); font-size: .86rem; letter-spacing: .03em; margin-top: 3px; }
.app p { font-size: .98rem; }
.app .fmt { color: var(--ink-soft); font-size: .86rem; margin-top: 6px; }
.app .pick { color: var(--brass); font-size: .86rem; margin-top: 6px; }

.links { display: flex; flex-wrap: wrap; gap: 8px 10px; margin-top: 12px; }
.links a {
  font-size: .82rem; color: var(--ink-soft);
  border: 1px solid var(--rule); border-radius: 2px; padding: 4px 10px;
}
.links a:hover { color: var(--bg); background: var(--brass); border-color: var(--brass); }

/* formatlar */

.fmts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 34px; }
.fmts > div { padding: 18px 0; border-top: 1px solid var(--rule); }
.fmts dt { font-family: var(--serif); font-size: 1.05rem; color: var(--brass); margin-bottom: 4px; }
.fmts dd { color: var(--ink-soft); font-size: .94rem; }

/* vurgu paneli */

.panel {
  background: var(--raise); border-left: 3px solid var(--brass);
  border-radius: 0 4px 4px 0; padding: 26px 28px; box-shadow: var(--shadow);
}
.panel h3 { font-size: 1.2rem; margin-bottom: 10px; }
.panel p { color: var(--ink-soft); font-size: .99rem; }
.addr {
  display: inline-block; margin-top: 14px; color: var(--brass);
  border: 1px dashed var(--rule); border-radius: 3px;
  padding: 7px 12px; font-size: .9rem; letter-spacing: .02em;
}

/* sss */

details { border-top: 1px solid var(--rule); padding: 16px 0; }
details:last-of-type { border-bottom: 1px solid var(--rule); }
summary {
  cursor: pointer; font-family: var(--serif); font-size: 1.08rem;
  list-style: none; display: flex; gap: 12px; align-items: baseline;
}
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; color: var(--brass); font-family: var(--text); }
details[open] summary::before { content: "\2212"; }
details p { color: var(--ink-soft); margin-top: 10px; padding-left: 24px; font-size: .97rem; }

/* ---------- yazı listesi ---------- */

.liste { list-style: none; }
.liste li { border-top: 1px solid var(--rule); padding: 24px 0; }
.liste li:last-child { border-bottom: 1px solid var(--rule); }
.liste h3 { font-size: 1.32rem; margin-bottom: 6px; }
.liste h3 a { color: var(--ink); border: 0; }
.liste h3 a:hover { color: var(--brass); }
.liste .ust { color: var(--ink-soft); font-size: .82rem; letter-spacing: .06em; margin-bottom: 8px; }
.liste p { color: var(--ink-soft); font-size: .97rem; }

/* ---------- yazı sayfası ---------- */

.yazi { padding: 54px 0 70px; }
.yazi header { margin-bottom: 36px; }
.yazi h1 { font-size: clamp(1.8rem, 3.6vw, 2.5rem); margin-bottom: 12px; }
.yazi .ust { color: var(--ink-soft); font-size: .84rem; letter-spacing: .06em; }
.yazi .ozet { color: var(--ink-soft); font-size: 1.05rem; margin-top: 14px; }

.govde { max-width: 68ch; }
.govde > * + * { margin-top: 1.1rem; }
.govde h2 { font-size: 1.45rem; margin-top: 2.4rem; }
.govde h3 { font-size: 1.15rem; margin-top: 1.8rem; }
.govde ul, .govde ol { padding-left: 24px; }
.govde li + li { margin-top: .4rem; }
.govde blockquote {
  border-left: 2px solid var(--brass); padding-left: 18px;
  color: var(--ink-soft); font-style: italic;
}
.govde code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .88em; background: var(--raise);
  border: 1px solid var(--rule); border-radius: 3px; padding: 1px 6px;
}
.govde pre {
  background: var(--raise); border: 1px solid var(--rule); border-radius: 4px;
  padding: 16px 18px; overflow-x: auto; font-size: .88rem;
}
.govde pre code { background: none; border: 0; padding: 0; }
.govde table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.govde th, .govde td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--rule); }
.govde th { font-family: var(--serif); color: var(--brass); font-weight: 600; }

.geri { display: inline-block; margin-top: 44px; font-size: .9rem; }

/* ---------- alt ---------- */

.foot { margin-top: auto; padding: 52px 0 40px; background: var(--bg-2); border-top: 1px solid var(--rule); }
.foot .word { font-family: var(--serif); font-size: 1.5rem; color: var(--brass); }
.foot p { color: var(--ink-soft); font-size: .93rem; margin-top: 8px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 18px; margin: 22px 0; }
.foot-links a { color: var(--ink-soft); font-size: .93rem; border: 0; }
.foot-links a:hover { color: var(--brass); }
.fine { border-top: 1px solid var(--rule); padding-top: 18px; font-size: .83rem; color: var(--ink-soft); }
.fine p + p { margin-top: 8px; }

.imza { margin-top: 14px; font-size: .8rem; color: var(--ink-soft); }
.imza a { color: var(--ink-soft); border: 0; }
.imza a:hover { color: var(--brass); }

/* ---------- dar ekran ---------- */

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 38px; }
  .shelf { height: 230px; }
  .app { grid-template-columns: 1fr; gap: 4px; }
  .fmts { grid-template-columns: 1fr; gap: 0; }

  /* Menü kendi satırına iner; marka tek satırda kalır. */
  .topbar-in { flex-wrap: wrap; height: auto; padding-top: 12px; padding-bottom: 0; }
  .mark .word { white-space: nowrap; font-size: 1.08rem; }
  .mark .sub { display: none; }
  .tgl { margin-left: auto; }
  .nav {
    order: 3; margin-left: 0; width: 100%;
    gap: 18px; padding: 10px 0 11px;
    border-top: 1px solid var(--rule); margin-top: 12px;
  }
  .nav a { font-size: .88rem; }
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  .hero { padding: 48px 0 40px; }
  .sec { padding: 48px 0; }
  .stamp { right: auto; left: 0; bottom: 12px; }
}

@media print {
  .topbar, .foot, .btns, .shelf-box { display: none; }
  body { background: #fff; color: #000; }
}