/* ORL-FUS-1 Forklift Uyarı Sistemi — landing page */

/* Inter (SIL OFL), Türkçe karakterlere göre küçültülmüş */
@font-face { font-family: 'Inter'; font-weight: 400; font-display: swap; src: url('../fonts/Inter-Regular.woff') format('woff'); }
@font-face { font-family: 'Inter'; font-weight: 500; font-display: swap; src: url('../fonts/Inter-Medium.woff') format('woff'); }
@font-face { font-family: 'Inter'; font-weight: 600; font-display: swap; src: url('../fonts/Inter-SemiBold.woff') format('woff'); }
@font-face { font-family: 'Inter'; font-weight: 700; font-display: swap; src: url('../fonts/Inter-Bold.woff') format('woff'); }

:root {
  --zemin: #f5f5f3; --yuzey: #ffffff; --koyu: #16171a; --soluk: #62646a; --silik: #9c9ea3; --kenar: rgba(22,23,26,.1);
  --sari: #ffc400; --kirmizi: #e3262d; --gecis: cubic-bezier(.22,1,.36,1);
  --golge: 0 1px 2px rgba(0,0,0,.04), 0 18px 50px -20px rgba(0,0,0,.18);
}
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { font-family: Inter, system-ui, -apple-system, 'Segoe UI', sans-serif; background: var(--zemin); color: var(--koyu); line-height: 1.55; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--koyu); outline-offset: 3px; border-radius: 6px; }
.kap { width: min(1200px, 100% - 40px); margin-inline: auto; }

/* Menü */
.menu { position: sticky; top: 14px; z-index: 20; margin-top: 14px; }
.menu .kap { display: flex; align-items: center; gap: 24px; height: 62px; padding: 0 10px 0 22px; border-radius: 18px; background: rgba(255,255,255,.8);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid var(--kenar); box-shadow: var(--golge); }
.menu .logo { height: 22px; }
.menu nav { display: flex; gap: 24px; margin-left: auto; color: var(--soluk); font-size: 15px; }
.menu nav a:hover { color: var(--koyu); }
.dugme { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 14px; font-weight: 600; font-size: 15px; border: 0; cursor: pointer;
  background: var(--koyu); color: #fff; transition: transform .25s var(--gecis), box-shadow .25s; }
.dugme:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -10px rgba(0,0,0,.45); }
.dugme.sari { background: var(--sari); color: var(--koyu); }
.dugme.hafif { background: var(--yuzey); color: var(--koyu); border: 1px solid var(--kenar); }
.menu .dugme { padding: 10px 16px; font-size: 14px; white-space: nowrap; }
.dil { display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 14px; border-radius: 12px; cursor: pointer; font: inherit; font-size: 13px; font-weight: 600; letter-spacing: .04em;
  color: var(--koyu); background: #f0f0ee; border: 1px solid var(--kenar); transition: background .2s, border-color .2s; }
.dil:hover { background: #e7e7e4; border-color: rgba(22,23,26,.2); }
.dil svg { width: 16px; height: 16px; opacity: .75; }
::view-transition-old(root), ::view-transition-new(root) { animation-duration: .35s; }

/* Hero */
.hero { padding: 70px 0 60px; }
.hero .kap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px; align-items: center; }
.etiket { display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px 7px 8px; border-radius: 999px; background: var(--yuzey); border: 1px solid var(--kenar); font-size: 13px; font-weight: 600; }
.etiket b { background: var(--sari); padding: 2px 8px; border-radius: 999px; font-size: 11px; }
h1 { font-size: clamp(42px, 5.4vw, 74px); line-height: 1.02; letter-spacing: -.045em; margin: 22px 0 18px; }
h1 mark { background: linear-gradient(transparent 58%, var(--sari) 58% 92%, transparent 92%); color: inherit; padding: 0 .06em; }
.hero p { font-size: clamp(17px, 1.5vw, 19px); color: var(--soluk); max-width: 520px; }
.eylemler { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.guven { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 30px; align-items: center; font-size: 14px; font-weight: 600; color: var(--soluk); }
.guven img { height: 30px; }

/* Hero canlandırması */
.sim { background: var(--yuzey); border: 1px solid var(--kenar); border-radius: 26px; box-shadow: var(--golge); overflow: hidden; }
.sim-ust { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--kenar); flex-wrap: wrap; }
.sim-ust b { font-size: 14px; }
.isaret { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 600; color: var(--soluk); transition: color .3s; }
.isaret::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: #c7c8cb; transition: background .3s; }
.isaret.uyari { color: var(--kirmizi); }
.isaret.uyari::before { background: var(--kirmizi); box-shadow: 0 0 0 0 rgba(227,38,45,.6); animation: nabiz 1.2s infinite; }
@keyframes nabiz { 70% { box-shadow: 0 0 0 8px rgba(227,38,45,0); } 100% { box-shadow: 0 0 0 0 rgba(227,38,45,0); } }
.sim .sahne-svg { display: block; width: 100%; height: auto; background: #141517; }
.durumlar { display: flex; gap: 8px; padding: 16px 18px; flex-wrap: wrap; border-top: 1px solid var(--kenar); }
.durumlar span { font-size: 12px; font-weight: 600; padding: 6px 10px; border-radius: 8px; background: #f0f0ee; color: var(--soluk); transition: background .2s, color .2s; }
.durumlar span.aktif { background: rgba(227,38,45,.12); color: var(--kirmizi); }
.sim .not { font-size: 12px; color: var(--silik); padding: 0 18px 14px; max-width: none; }

/* Kuşbakışı sahnelerin ortak parçaları */
.dalga circle { transform-origin: center; transform-box: fill-box; animation: dalga 1.8s ease-out infinite; }
.dalga circle:nth-child(2) { animation-delay: .6s; } .dalga circle:nth-child(3) { animation-delay: 1.2s; }
@keyframes dalga { from { transform: scale(.3); opacity: .9; } to { transform: scale(2.6); opacity: 0; } }
.hale { transition: opacity .4s; }
.lamba { transition: fill .25s; }
.aktif .lamba { filter: drop-shadow(0 0 6px #ff3b3b); }
.aktif .alan { stroke-opacity: 1; }
.kutular { animation: bant 4s linear infinite; } .kutular.ters { animation-direction: reverse; }
@keyframes bant { to { transform: translateX(80px); } }
.bolge { transition: stroke .3s; } .aktif .bolge { stroke: #ff3b3b; }
.sahne-svg text { font-family: Inter, sans-serif; font-size: 11px; font-weight: 700; letter-spacing: .12em; fill: #8b8f97; }

/* Duraklat / oynat (WCAG 2.2.2: 5 sn'den uzun otomatik hareket durdurulabilmeli) */
.sag { display: inline-flex; align-items: center; gap: 12px; }
.oynat { flex: none; width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--kenar); background: #f0f0ee; color: var(--koyu);
  display: grid; place-items: center; cursor: pointer; transition: background .2s; }
.oynat:hover { background: #e4e4e1; }
.oynat svg { width: 12px; height: 12px; }
.oynat .oyna, .oynat[aria-pressed="true"] .dur { display: none; }
.oynat[aria-pressed="true"] .oyna { display: block; }
.alan-sahne .oynat { position: absolute; right: 14px; bottom: 14px; background: rgba(20,21,23,.75); color: #e7e8ea; border-color: rgba(255,255,255,.15); backdrop-filter: blur(6px); }
.durdu, .durdu * { animation-play-state: paused !important; }

/* Bölümler */
section { padding: 110px 0; }
.baslik { max-width: 720px; margin-bottom: 50px; }
.baslik.orta { margin-inline: auto; text-align: center; }
.baslik small { font-weight: 700; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: #b08800; }
h2 { font-size: clamp(32px, 4.2vw, 54px); letter-spacing: -.04em; line-height: 1.06; margin: 12px 0 14px; }
.baslik p { color: var(--soluk); font-size: 18px; }
/* Belirme efekti yalnızca JavaScript çalışıyorsa; yoksa içerik doğrudan görünür. */
.js .belir { opacity: 0; transform: translateY(24px) scale(.985); transition: opacity .8s var(--gecis), transform .8s var(--gecis); }
.js .belir.gorundu { opacity: 1; transform: none; }

/* Adımlar */
.adimlar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: a; padding: 0; }
.adimlar li { list-style: none; background: var(--yuzey); border: 1px solid var(--kenar); border-radius: 24px; padding: 30px; position: relative; counter-increment: a; }
.adimlar li::before { content: counter(a); display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--koyu); color: var(--sari); font-weight: 700; margin-bottom: 20px; }
.adimlar h3 { font-size: 19px; margin-bottom: 6px; }
.adimlar p { color: var(--soluk); }

/* Ürün (bento) */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.hucre { background: var(--yuzey); border: 1px solid var(--kenar); border-radius: 24px; padding: 28px; box-shadow: var(--golge); overflow: hidden; position: relative; display: flex; flex-direction: column; }
.hucre h3 { font-size: 20px; letter-spacing: -.02em; margin-top: auto; }
.hucre p { color: var(--soluk); margin-top: 6px; font-size: 15px; }
.g2 { grid-column: span 2; } .g4 { grid-column: span 4; }
.hucre.urun { padding: 0; background: radial-gradient(110% 90% at 50% 30%, #ededec, #c3c3c2); min-height: 360px; }
.hucre.urun img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; transition: transform 1s var(--gecis); }
.hucre.urun:hover img { transform: scale(1.04); }
.hucre.urun .alt { position: relative; margin-top: auto; padding: 24px; background: linear-gradient(transparent, rgba(255,255,255,.95) 40%); }
.hucre.koyu { background: var(--koyu); color: #fff; } .hucre.koyu p { color: #a4a6ab; }
.hucre.sari { background: var(--sari); }
.hucre.sari p { color: #4a3b00; }
.buyuk { font-size: 64px; font-weight: 700; letter-spacing: -.05em; line-height: 1; margin-bottom: 20px; }
.ikon { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: #f0f0ee; margin-bottom: 30px; }
.ikon svg { width: 24px; height: 24px; }

/* Teknik kartlar */
.teknik { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.teknik div { background: var(--yuzey); border: 1px solid var(--kenar); border-radius: 18px; padding: 22px; }
.teknik small { color: var(--silik); font-size: 13px; font-weight: 500; }
.teknik b { display: block; font-size: 20px; letter-spacing: -.02em; margin-top: 6px; }
.teknik .genis { grid-column: span 2; }

/* Uygulama alanları */
.alanlar { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: center; background: var(--yuzey); border: 1px solid var(--kenar); border-radius: 28px; padding: 30px; box-shadow: var(--golge); }
.alan-sahne { position: relative; aspect-ratio: 600 / 420; border-radius: 20px; overflow: hidden; background: #2a2c30; }
.alan-sahne > .sahne-svg { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; transition: opacity .6s ease; }
.alan-sahne > .sahne-svg.secili { opacity: 1; }
.alan-durum { position: absolute; left: 14px; bottom: 14px; display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border-radius: 10px;
  font-size: 12px; font-weight: 600; color: #e7e8ea; background: rgba(20,21,23,.75); backdrop-filter: blur(6px); }
.alan-durum::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: #6b6e75; transition: background .25s; }
.alan-durum.uyari::before { background: #ff3b3b; box-shadow: 0 0 10px #ff3b3b; }
.sekmeler { display: grid; gap: 10px; }
.sekmeler button { position: relative; overflow: hidden; display: grid; gap: 0; text-align: left; padding: 16px 18px 16px 44px; border: 1px solid transparent; border-radius: 14px;
  background: #f5f5f3; cursor: pointer; transition: background .3s, border-color .3s, box-shadow .3s; }
.sekmeler button::before { content: ''; position: absolute; left: 18px; top: 22px; width: 10px; height: 10px; border-radius: 3px; background: var(--sari); box-shadow: 0 0 0 3px rgba(255,196,0,.25); }
.sekmeler button b { font-weight: 600; }
.sekmeler button span { color: var(--soluk); font-size: 14px; max-height: 0; opacity: 0; overflow: hidden; transition: max-height .4s var(--gecis), opacity .3s, margin .3s; }
.sekmeler button i { position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: var(--sari); transform: scaleX(0); transform-origin: left; }
.sekmeler button.secili { background: var(--yuzey); border-color: var(--kenar); box-shadow: 0 10px 30px -18px rgba(0,0,0,.35); }
.sekmeler button.secili span { max-height: 60px; opacity: 1; margin-top: 4px; }
.sekmeler button.secili i { animation: ilerle 6.5s linear forwards; }
.alanlar:hover .sekmeler button.secili i, .alanlar:focus-within .sekmeler button.secili i,
.alanlar:not(.ekranda) .sekmeler button.secili i { animation-play-state: paused; }
@keyframes ilerle { to { transform: scaleX(1); } }

/* SSS */
.sss { max-width: 820px; margin-inline: auto; display: grid; gap: 10px; }
details { background: var(--yuzey); border: 1px solid var(--kenar); border-radius: 16px; padding: 0 22px; }
summary { cursor: pointer; list-style: none; padding: 20px 0; font-weight: 600; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; font-size: 22px; line-height: 1; transition: rotate .3s; }
details[open] summary::after { rotate: 45deg; }
details p { color: var(--soluk); padding-bottom: 20px; }

/* Son çağrı ve alt bilgi */
.son .kap { background: var(--koyu); color: #fff; border-radius: 32px; padding: 70px 50px; position: relative; overflow: hidden; }
.son .kap::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 14px; background: repeating-linear-gradient(-45deg, var(--sari) 0 16px, var(--koyu) 16px 32px); }
.son h2 { max-width: 700px; }
.son p { color: #a4a6ab; font-size: 18px; }
footer { padding: 34px 0; color: var(--soluk); font-size: 14px; }
footer .kap { display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; }
footer img { height: 20px; }
footer nav { display: flex; gap: 22px; margin-left: auto; }
footer nav a:hover { color: var(--koyu); }

@media (max-width: 960px) {
  .menu nav { display: none; } .menu .dil { margin-left: auto; }
  .hero .kap, .alanlar { grid-template-columns: 1fr; }
  .bento { grid-template-columns: 1fr 1fr; } .g2, .g4 { grid-column: span 2; }
  .adimlar { grid-template-columns: 1fr; } .teknik { grid-template-columns: 1fr 1fr; }
  .alanlar { padding: 18px; }
  section { padding: 80px 0; }
  footer nav { margin-left: 0; }
}
@media (max-width: 420px) {
  .menu .kap { gap: 8px; padding: 0 8px 0 14px; } .menu .logo { height: 18px; }
  .dil { padding: 0 10px; height: 36px; } .menu .dugme { padding: 9px 12px; font-size: 13px; }
}
/* Hareket azaltma tercihinde yalnızca süs efektleri kapanır; sahneler oynar ve duraklatılabilir. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .belir { opacity: 1; transform: none; transition: none; }
  .dugme:hover, .hucre.urun:hover img { transform: none; }
}