:root{
  --brand:#0b2a7a;
  --brand-dark:#081d54;
  --ink:#0b1220;
  --muted:#667085;

  --paper:#f6f1e6;
  --card:#ffffff;
  --line:rgba(15,23,42,.12);

  --shadow: 0 14px 50px rgba(2, 6, 23, .10);
  --radius: 18px;

  /* üst bar yükseklikleri (desktop) */
  --topbar-h: 40px;
  --header-h: 86px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html, body{ max-width:100%; overflow-x:hidden; } /* taşma sigortası */

body.catalog-page{
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  padding-top: calc(var(--topbar-h) + var(--header-h)); /* 40 + 86 = 126 */
}

/* Daha estetik: ürünlerde biraz daha içeri */
.wrap{
  width: min(1140px, 90%);
  margin: 0 auto;
}

/* =========================
   TOPBAR (lacivert şerit) - DESKTOP SABİT
========================= */
.topbar{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-h);
  z-index: 2000;

  background: var(--brand-dark);
  color:#fff;
  font-size:14px;
}

.topbar-inner{
  width: min(1200px, 92%);
  margin: 0 auto;
  height: 100%;

  display:flex;
  align-items:center;
  justify-content:space-between;
  min-width: 0;
}

.topbar-left{
  display:flex;
  gap:26px;
  align-items:center;
  min-width: 0;
}
.topbar-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:600;
  min-width: 0;
}

.topbar a{
  color:#fff !important;
  text-decoration:none !important;
  opacity:.95;
}
.topbar a:hover{ opacity:1; text-decoration:none !important; }

/* =========================
   HEADER (beyaz şerit) - DESKTOP SABİT
========================= */
.header{
  position: fixed;
  top: var(--topbar-h);
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 1999;

  background:#fff;
  border-bottom:1px solid rgba(0,0,0,.06);
}

.header-inner{
  width: min(1200px, 92%);
  margin: 0 auto;
  height: 100%;

  display:flex;
  align-items:center;
  justify-content:space-between;
  min-width: 0;
}

.brand{ display:inline-flex; align-items:center; }
.logo{ height:58px; width:auto; display:block; }

.nav{
  display:flex;
  gap:18px;
  align-items:center;
  flex-wrap: wrap; /* desktop daralınca da taşmasın */
  row-gap: 8px;
}

/* MOR ALT-ÇİZGİYİ KESİN KESER */
.nav-link{
  color:#111 !important;
  text-decoration:none !important;
  font-weight:800;
  font-size:13px;
  padding:10px 14px;
  border-radius:999px;
  transition:.2s;
}
.nav-link:visited{ color:#111 !important; }
.nav-link:hover{
  background: rgba(11,42,122,.08);
  color: var(--brand) !important;
}
.nav-link.active{
  background: rgba(11,42,122,.12);
  color: var(--brand) !important;
}

/* Üst barlar sabit olduğu için içerik üstten başlamasın */
.hero{ padding: 24px 0 10px; }

/* =========================
   HERO (üst kısım)
========================= */
.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 18px;
  align-items: stretch;
}

.hero-media{
  position:relative;
  border-radius: var(--radius);
  overflow:hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(0,0,0,.08);
  background: #e9eef8;
  min-height: 360px;
}
.hero-media img{
  width:100%;
  height:100%;
  object-fit: cover;
  display:block;
}

.hero-ribbon{
  position:absolute;
  left:18px;
  bottom:18px;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  border-radius:999px;
  background: rgba(11,42,122,.88);
  color:#fff;
  font-weight:900;
  font-size:12px;
  box-shadow: 0 18px 40px rgba(11,42,122,.22);
}
.hero-ribbon .dot{opacity:.75}

.hero-panel{
  position:relative;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid rgba(0,0,0,.08);
  box-shadow: var(--shadow);
  padding: 18px;
  overflow:hidden;
}
.hero-panel::before{
  content:"";
  position:absolute;
  inset:-60px -60px auto auto;
  width: 260px;
  height: 260px;
  background: rgba(249,115,22,.12);
  border-radius: 999px;
}
.hero-panel::after{
  content:"";
  position:absolute;
  inset:auto -90px -90px auto;
  width: 320px;
  height: 320px;
  background: rgba(11,42,122,.08);
  border-radius: 999px;
}

.hero-badge{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 12px;
  border-radius:999px;
  background: rgba(11,42,122,.10);
  color: var(--brand);
  font-weight:1000;
  font-size:12px;
  margin-bottom: 10px;
  z-index:1;
}
.hero-panel h1{
  position:relative;
  z-index:1;
  font-size: 34px;
  line-height:1.05;
  letter-spacing: -0.6px;
  font-weight:1000;
  margin-bottom:10px;
}
.hero-panel p{
  position:relative;
  z-index:1;
  color:#334155;
  font-size: 13.6px;
  line-height: 1.55;
  margin-bottom: 14px;
}

.hero-actions{
  position:relative;
  z-index:1;
  display:flex;
  gap:10px;
  margin-bottom: 14px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  text-decoration:none;
  font-weight:1000;
  font-size:13px;
  padding:10px 14px;
  border-radius: 12px;
  transition:.15s;
}
.btn.primary{
  color:#fff;
  background: linear-gradient(135deg, var(--brand), #0a3aa8);
  box-shadow: 0 14px 30px rgba(11,42,122,.22);
}
.btn.primary:hover{ transform: translateY(-1px); }
.btn.ghost{
  color: var(--brand);
  background: rgba(11,42,122,.08);
  border:1px solid rgba(11,42,122,.16);
}
.btn.ghost:hover{ background: rgba(11,42,122,.12); }

.hero-mini{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:10px;
}
.mini-card{
  background:#fff;
  border:1px solid rgba(0,0,0,.08);
  border-radius: 14px;
  padding: 10px;
}
.mini-k{
  font-size: 11px;
  font-weight:1000;
  color: var(--muted);
  margin-bottom:4px;
}
.mini-v{
  font-size: 12.6px;
  font-weight: 900;
  color:#0f172a;
}

/* =========================
   ALT BÖLÜM
========================= */
.section{ padding: 18px 0 90px; }
.section-head{
  text-align:center;
  margin: 12px 0 10px;
}
.eyebrow{
  font-size:11px;
  font-weight:1000;
  letter-spacing:.22em;
  color:#64748b;
  margin-bottom:8px;
}
.section-title{
  font-size:12px;
  letter-spacing:.32em;
  font-weight:1000;
  color:#64748b;
}

/* Filtreler */
.filters{
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
  margin: 18px 0 22px;
}
.filter-btn{
  border:1px solid rgba(15,23,42,.16);
  background: rgba(255,255,255,.55);
  padding:10px 14px;
  font-size:12px;
  letter-spacing:.18em;
  font-weight:1000;
  cursor:pointer;
  transition:.15s;
}
.filter-btn:hover{ background: rgba(11,42,122,.06); }
.filter-btn.active{
  background:#0f172a;
  color:#fff;
  border-color:#0f172a;
}

/* Grid */
.grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* Kart */
.card{ background: transparent; }

.card-media{
  height: 250px;
  background:#fff;
  border: 1px solid rgba(15,23,42,.12);
  overflow:hidden;

  display:flex;
  align-items:center;
  justify-content:center;

  padding: 14px;
}
.card-media img{
  max-width: 92%;
  max-height: 92%;
  width:auto;
  height:auto;
  object-fit: contain;
  display:block;
  transition: transform .25s ease;
}
.card:hover .card-media img{ transform: scale(1.05); }

.card-body{
  text-align:center;
  padding-top: 12px;
}
.card-title{
  font-size:12px;
  font-weight:1000;
  letter-spacing:.14em;
  text-transform:uppercase;
  margin-bottom: 8px;
}
.card-sub{
  font-size:12px;
  color:#6b7280;
  margin-bottom: 12px;
}
.card-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  border-top:1px solid rgba(15,23,42,.12);
  padding-top: 12px;
}

/* TEKLİF */
.card-price{
  font-size:11px;
  letter-spacing:.18em;
  font-weight:1000;
  text-transform:uppercase;
  color:#0f172a;
  text-decoration:none;
}
.card-price:hover{ text-decoration: underline; }

/* DETAY / EK PARÇA */
.card-btn{
  text-decoration:none;
  border:1px solid #0f172a;
  padding:9px 12px;
  font-size:11px;
  letter-spacing:.22em;
  font-weight:1000;
  text-transform:uppercase;
  color:#0f172a;
  background:transparent;
  transition:.15s;
}
.card-btn:hover{ background: rgba(15,23,42,.06); }
.card-btn.ghost{
  border-color: rgba(15,23,42,.16);
  color:#6b7280;
}

/* =========================
   Sağ altta yukarı çık butonu
========================= */
.float-actions{
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 2147483647;
  display: block;
  visibility: visible;
  opacity: 1;
  pointer-events: none; /* container tıklanmasın */
}

#scrollTopBtn{
  pointer-events: auto; /* buton tıklansın */
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: 0;

  background: #0b4aa2;
  color: #fff;

  font-size: 22px;
  font-weight: 700;

  box-shadow: 0 10px 25px rgba(0,0,0,.28);
  cursor: pointer;

  visibility: visible;
  opacity: 1;
}
#scrollTopBtn::before,
#scrollTopBtn::after{ content: none; }

/* =========================
   Responsive (desktop -> tablet)
========================= */
@media(max-width:1100px){
  .wrap{ width: min(1040px, 92%); }
  .grid{ grid-template-columns: repeat(3, 1fr); }
  .card-media{ height: 240px; }
}

@media(max-width:980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .grid{ grid-template-columns: repeat(2, 1fr); }
  .card-media{ height: 240px; }
}

/* =========================
   MOBIL ÜST KISIM - TOPARLAK (tek blok)
========================= */
@media (max-width: 720px){

  /* Mobilde fixed barlar yerine sticky daha temiz */
  body.catalog-page{ padding-top: 0 !important; }

  .topbar{
    position: sticky;
    top: 0;
    height: auto;
  }
  .topbar-inner{
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px 14px;
    padding: 6px 0;
    height: auto;
    font-size: 13px;
  }
  .topbar-left{
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 14px;
  }
  .topbar-item{ gap: 8px; }

  .header{
    position: sticky;
    top: 36px;     /* topbar yaklaşık yüksekliği */
    height: auto;
  }
  .header-inner{
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 0 12px;
    height: auto;
  }

  .logo{ height: 42px; }

  .nav{
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
  }
  .nav-link{
    padding: 8px 12px;
    font-size: 13px;
    border-radius: 999px;
    background: rgba(11,42,122,.06);
    border: 1px solid rgba(11,42,122,.12);
  }
  .nav-link.active{
    background: rgba(31,182,255,.20);
    border-color: rgba(31,182,255,.35);
    color: var(--brand) !important;
  }

  .grid{ grid-template-columns: 1fr; }
  .hero-panel h1{ font-size: 30px; }
}