/* KUTTU geçici tanıtım sayfası (F11-00). Dış kaynak yok; renkler K49 marka renkleri. */
@font-face {
  font-family: "Unbounded";
  src: url(fonts/unbounded-latin-600-normal.woff2) format("woff2");
  font-weight: 600;
  font-display: swap;
  /* Yazı tipi dosyası yalnızca latin alt kümesi (ş, ğ, İ yok) → yalnızca marka adı ve ana başlıkta. */
  unicode-range: U+0000-00FF, U+0131, U+2000-206F;
}

:root {
  --kahve: #5A2A20;
  --kahve-acik: #8A3B28;
  --vurgu: #E8704A;
  --vurgu-koyu: #C9522E;
  --zemin: #FFF8F2;
  --kart: #FFFFFF;
  --metin: #3A1F18;
  --metin-ikincil: #6B4A40;
  --sistem: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--zemin);
  color: var(--metin);
  font-family: var(--sistem);
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; }
a:focus-visible { outline: 3px solid #fff; outline-offset: 3px; border-radius: 8px; }

/* Üst şerit: kahraman alanının üstünde, şeffaf */
.ust {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px clamp(16px, 4vw, 48px);
}

.marka {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #fff;
}
.marka img { width: 40px; height: auto; filter: drop-shadow(0 4px 8px rgba(90, 14, 16, .35)); }
.marka span {
  font-family: "Unbounded", var(--sistem);
  font-weight: 600;
  font-size: 1.375rem;
  letter-spacing: .14em;
  text-shadow: 0 3px 10px rgba(90, 14, 16, .4);
}

.giris {
  flex-shrink: 0;
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  color: var(--kahve);
  font-weight: 600;
  font-size: .9375rem;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(90, 14, 16, .25);
  transition: background-color .15s ease;
}
.giris:hover { background: #fff; }
.giris:focus-visible { outline-color: var(--kahve); }

/* Kahraman alanı: marka zemini + buzlu cam panel */
.kahraman {
  position: relative;
  min-height: min(88vh, 760px);
  display: grid;
  place-items: center;
  padding: 120px clamp(16px, 4vw, 48px) 72px;
  background: #C9402F url(zemin-960.webp) center / cover no-repeat;
}
@media (min-width: 961px) {
  .kahraman { background-image: url(zemin-1920.webp); }
}

.cam {
  max-width: 880px;
  padding: clamp(28px, 5vw, 56px) clamp(22px, 5vw, 64px);
  border-radius: 32px;
  background: rgba(70, 18, 16, .38);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  backdrop-filter: blur(22px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, .45);
  box-shadow: 0 30px 80px rgba(80, 10, 20, .35), inset 0 1px 0 rgba(255, 255, 255, .45);
  color: #fff;
  text-align: center;
}

.cam h1 {
  margin: 0 0 18px;
  font-family: "Unbounded", var(--sistem);
  font-weight: 600;
  font-size: clamp(1.75rem, 5.2vw, 3.25rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  text-wrap: balance;
  text-shadow: 0 4px 16px rgba(90, 14, 16, .35);
}

.cam p {
  margin: 0 auto;
  max-width: 640px;
  font-size: clamp(1rem, 2.2vw, 1.1875rem);
  line-height: 1.6;
  color: rgba(255, 255, 255, .95);
}

/* F11-01 C: canlı demo bağlantısı (yeni sekme; yalnızca bağlantı, CSP değişmez) */
.cam .demo {
  display: inline-block;
  margin-top: 26px;
  padding: 14px 30px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .95);
  color: var(--kahve);
  font-weight: 600;
  font-size: 1.0625rem;
  text-decoration: none;
  box-shadow: 0 8px 22px rgba(90, 14, 16, .3);
  transition: background-color .15s ease, transform .15s ease;
}
.cam .demo:hover { background: #fff; transform: translateY(-1px); }
.cam .demo:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.cam .demo-not { margin-top: 12px; font-size: .9375rem; color: rgba(255, 255, 255, .85); }

/* Özellikler */
.ozellikler {
  max-width: 1160px;
  margin: 0 auto;
  padding: clamp(48px, 7vw, 88px) clamp(16px, 4vw, 48px) clamp(40px, 6vw, 72px);
}

.kartlar {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.kart {
  position: relative;
  padding: 28px 24px 26px;
  border-radius: 20px;
  background: var(--kart);
  border: 1px solid #F2E2D8;
  box-shadow: 0 10px 30px rgba(90, 42, 32, .06);
}
.kart::before {
  content: "";
  display: block;
  width: 36px;
  height: 4px;
  margin-bottom: 18px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--vurgu), #FF9A6E);
}
.kart h2 {
  margin: 0 0 8px;
  font-size: 1.125rem;
  line-height: 1.35;
  color: var(--kahve);
}
.kart p {
  margin: 0;
  color: var(--metin-ikincil);
  font-size: .975rem;
}

.duyuru {
  margin: clamp(36px, 5vw, 56px) 0 0;
  text-align: center;
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--kahve-acik);
}

.alt {
  padding: 28px 16px 36px;
  border-top: 1px solid #F2E2D8;
  text-align: center;
  font-size: .875rem;
  color: var(--metin-ikincil);
}

@media (max-width: 480px) {
  .marka img { width: 32px; }
  .marka span { font-size: 1.125rem; }
  .giris { padding: 9px 16px; font-size: .875rem; }
  .cam { border-radius: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}