/* Fatih Balkan · E-Ticaret Kitap Serisi — statik site stili
   Renk kimliği kitap kapaklarıyla aynı: indigo + altın */

:root {
  --indigo: #4F46E5;
  --indigo-600: #4338CA;
  --indigo-800: #3730A3;
  --indigo-950: #1E1B4B;
  --gold: #F59E0B;
  --gold-2: #FBBF24;
  --ink: #1E293B;
  --body: #334155;
  --muted: #64748B;
  --line: #E2E8F0;
  --bg: #FFFFFF;
  --soft: #F5F7FF;
  --soft-2: #EEF2FF;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(30, 27, 75, .10);
  --shadow-lg: 0 30px 60px rgba(30, 27, 75, .22);
  --max: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--body);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}
img { max-width: 100%; display: block; }
a { color: var(--indigo); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { color: var(--ink); line-height: 1.2; margin: 0 0 .5em; font-weight: 800; letter-spacing: -.01em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1rem; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.section { padding: 72px 0; }
.eyebrow { text-transform: uppercase; letter-spacing: .16em; font-size: .8rem; font-weight: 700; color: var(--indigo); margin: 0 0 .6rem; }
.center { text-align: center; }
.muted { color: var(--muted); }

/* Butonlar */
.btn {
  display: inline-flex; align-items: center; gap: .55em;
  font-weight: 700; font-size: 1rem; cursor: pointer;
  padding: .85em 1.5em; border-radius: 999px; border: 2px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-gold { background: linear-gradient(90deg, var(--gold-2), var(--gold)); color: #1E1B4B; box-shadow: 0 8px 20px rgba(245, 158, 11, .35); }
.btn-gold:hover { box-shadow: 0 12px 26px rgba(245, 158, 11, .45); }
.btn-ghost { background: transparent; border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost.dark { border-color: var(--line); color: var(--indigo); }
.btn-indigo { background: var(--indigo); color: #fff; box-shadow: 0 8px 20px rgba(79,70,229,.3); }
.btn-sm { padding: .6em 1.1em; font-size: .92rem; }

/* Header / nav */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.86); backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: .6em; font-weight: 800; color: var(--ink); font-size: 1.08rem; }
.brand .dot { width: 12px; height: 12px; border-radius: 50%; background: linear-gradient(135deg, var(--indigo), var(--gold)); }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--body); font-weight: 600; font-size: .96rem; }
.nav-links a:hover { color: var(--indigo); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.5rem; color: var(--ink); cursor: pointer; }
.lang-link { border: 1.6px solid var(--line); color: var(--ink); font-weight: 700; font-size: .82rem; padding: .32em .72em; border-radius: 9px; letter-spacing: .03em; }
.lang-link:hover { border-color: var(--indigo); color: var(--indigo); text-decoration: none; }

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--indigo) 0%, var(--indigo-800) 52%, var(--indigo-950) 100%);
  color: #fff; position: relative; overflow: hidden;
}
.hero::before, .hero::after {
  content: ""; position: absolute; border-radius: 50%; opacity: .08; background: #fff;
}
.hero::before { width: 520px; height: 520px; top: -160px; right: -120px; }
.hero::after { width: 380px; height: 380px; bottom: -160px; left: -120px; opacity: .06; }
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; padding-top: 70px; padding-bottom: 80px; }
.hero h1 { color: #fff; font-size: clamp(2.1rem, 4.6vw, 3.3rem); margin-bottom: .35em; }
.hero p.lead { color: #E0E7FF; font-size: 1.18rem; max-width: 33ch; }
.hero .badge {
  display: inline-block; background: linear-gradient(90deg, var(--gold-2), var(--gold));
  color: #1E1B4B; font-weight: 800; letter-spacing: .06em; font-size: .82rem;
  padding: .5em 1.1em; border-radius: 999px; margin-bottom: 1.2rem; text-transform: uppercase;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 1.6rem; }
.hero-covers { display: flex; justify-content: center; gap: 22px; }
.hero-covers img {
  width: 46%; max-width: 240px; border-radius: 10px; box-shadow: var(--shadow-lg);
  transform: rotate(-4deg); transition: transform .3s ease;
}
.hero-covers img:last-child { transform: rotate(4deg) translateY(18px); }
.hero-covers img:hover { transform: rotate(0) translateY(-6px) scale(1.03); }
.hero-stats { display: flex; gap: 26px; margin-top: 2rem; flex-wrap: wrap; }
.hero-stats .stat { }
.hero-stats .num { font-size: 1.6rem; font-weight: 800; color: #fff; }
.hero-stats .lbl { font-size: .82rem; color: #C7D2FE; }

/* Kitap kartları */
.books { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.book-card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.book-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.book-card .cover-wrap { background: linear-gradient(160deg, var(--soft-2), #fff); padding: 30px 30px 0; display: flex; justify-content: center; }
.book-card .cover-wrap img { width: 62%; max-width: 220px; border-radius: 8px; box-shadow: var(--shadow); }
.book-card .body { padding: 26px 28px 30px; display: flex; flex-direction: column; flex: 1; }
.tag { display: inline-block; font-size: .74rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; padding: .35em .8em; border-radius: 999px; margin-bottom: .9rem; }
.tag.begin { background: #ECFDF5; color: #047857; }
.tag.adv { background: var(--soft-2); color: var(--indigo-600); }
.book-card h3 { font-size: 1.4rem; margin-bottom: .5rem; }
.book-card .feat { list-style: none; padding: 0; margin: .4rem 0 1.4rem; }
.book-card .feat li { position: relative; padding-left: 2em; margin-bottom: .5rem; font-size: .97rem; }
.book-card .feat li::before { content: ""; position: absolute; left: 0; top: .12em; width: 1.35em; height: 1.35em; border-radius: 50%; background: #FFF7ED url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23F59E0B' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") no-repeat center; background-size: .82em; }
.book-card .card-cta { margin-top: auto; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* Genel kart / bölümler */
.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: center; }
.about-photo img { width: 260px; border-radius: 20px; box-shadow: var(--shadow-lg); }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 1rem 0; padding: 0; list-style: none; }
.pill-list li { background: var(--soft); border: 1px solid var(--line); border-radius: 999px; padding: .4em 1em; font-size: .9rem; font-weight: 600; color: var(--ink); }
.contact-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 1rem; }

.soft-bg { background: var(--soft); }
.gradient-cta { background: linear-gradient(160deg, var(--indigo), var(--indigo-950)); color: #fff; border-radius: 24px; padding: 54px 40px; text-align: center; }
.gradient-cta h2 { color: #fff; }
.gradient-cta p { color: #E0E7FF; max-width: 52ch; margin-left: auto; margin-right: auto; }

/* Detay sayfası içindekiler */
.toc-part { border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; margin-bottom: 14px; background: var(--bg); }
.toc-part h3 { margin: 0 0 .4rem; color: var(--indigo-600); font-size: 1.08rem; }
.toc-part ul { margin: 0; padding-left: 1.2em; columns: 2; column-gap: 30px; }
.toc-part li { margin-bottom: .3rem; font-size: .93rem; break-inside: avoid; }
.crumb { font-size: .9rem; margin-bottom: 1.4rem; }
.lead-box { background: var(--soft-2); border-left: 4px solid var(--indigo); border-radius: 12px; padding: 18px 22px; margin: 0 0 1.6rem; }

/* Footer */
.site-footer { background: var(--indigo-950); color: #C7D2FE; padding: 54px 0 30px; }
.site-footer a { color: #C7D2FE; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; margin-bottom: 30px; }
.footer-grid h4 { color: #fff; font-size: .95rem; margin: 0 0 .8rem; letter-spacing: .04em; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: .5rem; font-size: .92rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 22px; font-size: .85rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* Responsive */
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; padding-top: 44px; padding-bottom: 54px; text-align: center; }
  .hero p.lead { margin-left: auto; margin-right: auto; }
  .hero-cta, .hero-stats { justify-content: center; }
  .hero-covers { order: -1; margin-bottom: 8px; }
  .books { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 26px; }
  .about-photo { text-align: center; }
  .about-photo img { margin: 0 auto; width: 200px; }
  .footer-grid { grid-template-columns: 1fr; gap: 22px; }
  .toc-part ul { columns: 1; }
  .nav-links {
    position: fixed; inset: 66px 0 auto 0; background: #fff; flex-direction: column;
    gap: 0; padding: 10px 22px 20px; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: block; }
  .section { padding: 52px 0; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .gradient-cta { padding: 40px 22px; }
  .hero-covers img { width: 44%; }
}

/* ---- Lead capture modal ---- */
.lm-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.6); display: none; z-index: 200; align-items: center; justify-content: center; padding: 18px; }
.lm-overlay.open { display: flex; }
.lm-modal { background: #fff; border-radius: 18px; max-width: 440px; width: 100%; box-shadow: 0 30px 70px rgba(0,0,0,.35); position: relative; overflow: hidden; animation: lmIn .2s ease; }
@keyframes lmIn { from { transform: translateY(14px); opacity: 0; } to { transform: none; opacity: 1; } }
.lm-close { position: absolute; top: 8px; right: 14px; background: none; border: 0; font-size: 1.8rem; line-height: 1; color: #94a3b8; cursor: pointer; z-index: 2; }
.lm-body { padding: 30px 28px 28px; }
.lm-badge { display: inline-block; background: var(--soft-2); color: var(--indigo-600); font-weight: 700; font-size: .78rem; padding: .35em .8em; border-radius: 999px; margin-bottom: 12px; }
.lm-title { margin: 0 0 6px; font-size: 1.35rem; }
.lm-sub { margin: 0 0 16px; color: var(--muted); font-size: .95rem; }
.lm-label { display: block; font-size: .8rem; font-weight: 700; margin: 12px 0 5px; color: var(--ink); }
.lm-input { width: 100%; padding: .72em .9em; border: 1.5px solid var(--line); border-radius: 10px; font-size: 1rem; font-family: inherit; }
.lm-input:focus { outline: none; border-color: var(--indigo); }
.lm-consent { display: flex; gap: 9px; align-items: flex-start; margin: 16px 0 2px; font-size: .86rem; color: var(--body); cursor: pointer; }
.lm-consent input { margin-top: 3px; flex: none; }
.lm-hp { position: absolute !important; left: -9999px !important; top: 0; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.lm-cf:not(:empty) { margin-top: 14px; }
.lm-err { background: #FEF2F2; color: #B91C1C; border: 1px solid #FECACA; border-radius: 9px; padding: 9px 12px; font-size: .85rem; margin-top: 12px; }
.lm-btn { width: 100%; margin-top: 16px; padding: .85em; border: 0; border-radius: 999px; background: linear-gradient(90deg, var(--gold-2), var(--gold)); color: #1E1B4B; font-weight: 800; font-size: 1rem; cursor: pointer; }
.lm-btn:disabled { opacity: .7; cursor: default; }
.lm-success { padding: 42px 30px; text-align: center; }
.lm-check { width: 62px; height: 62px; border-radius: 50%; background: #ECFDF5; color: #059669; font-size: 2rem; display: grid; place-items: center; margin: 0 auto 14px; font-weight: 800; }
.lm-success h3 { margin: 0 0 8px; }
.lm-success p { color: var(--muted); margin: 0 0 18px; }

/* ---- Flat ikonlar ---- */
.ico { width: 1.1em; height: 1.1em; vertical-align: -.15em; flex: none; }
h3 .ico, b .ico { margin-right: .5em; vertical-align: -.14em; }
.lm-check svg { width: 34px; height: 34px; }
.nav-toggle { line-height: 0; }
.nav-toggle .ico { width: 26px; height: 26px; }