/* =====================================================================
   BISTA Kimya — Kurumsal Tasarım / Corporate Design
   Glassmorphism + Turkuaz (logo uyumlu) palet
   ===================================================================== */

/* ----------  DEĞİŞKENLER / DESIGN TOKENS  ---------- */
:root {
  /* Logo renkleri */
  --teal-50:  #eafaf8;
  --teal-100: #c9efeb;
  --teal-200: #98e0d9;
  --teal-300: #5fcbc1;
  --teal-400: #39b3ac;   /* ana turkuaz */
  --teal-500: #2a9b94;
  --teal-600: #218079;
  --teal-700: #1c6862;
  --teal-800: #1a514d;
  --teal-900: #143b38;

  --ink:      #16302e;   /* koyu metin */
  --ink-soft: #46615e;
  --muted:    #6f8987;

  --bg:        #f4f9f8;
  --bg-deep:   #0f2c2b;
  --white:     #ffffff;

  /* Cam efekti — şeffaflık belirgin, blur güçlü */
  --glass-bg:     rgba(255, 255, 255, 0.30);
  --glass-bg-2:   rgba(255, 255, 255, 0.18);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-shadow: 0 10px 36px rgba(20, 59, 56, 0.18);
  --glass-blur:   blur(16px) saturate(160%);

  --radius:    18px;
  --radius-sm: 12px;
  --radius-lg: 26px;

  --shadow:    0 10px 30px rgba(20, 59, 56, 0.10);
  --shadow-lg: 0 24px 60px rgba(20, 59, 56, 0.18);

  --transition: 0.25s cubic-bezier(.4, 0, .2, 1);

  --container: 1200px;
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

/* ----------  RESET  ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

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

body {
  font-family: var(--font);
  color: var(--ink);
  line-height: 1.65;
  background: var(--bg);
  background-image:
    radial-gradient(620px 480px at 4% 2%,  rgba(57, 179, 172, 0.48), transparent 55%),
    radial-gradient(560px 480px at 96% 10%, rgba(95, 203, 193, 0.45), transparent 52%),
    radial-gradient(640px 560px at 88% 42%, rgba(33, 128, 121, 0.30), transparent 55%),
    radial-gradient(560px 520px at 8% 56%,  rgba(57, 179, 172, 0.34), transparent 55%),
    radial-gradient(640px 560px at 92% 80%, rgba(95, 203, 193, 0.40), transparent 55%),
    radial-gradient(600px 520px at 12% 96%, rgba(33, 128, 121, 0.30), transparent 55%),
    linear-gradient(135deg, #dff3f0, #eaf7f5 50%, #ddf2ef);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Yüzen dekoratif cam küreler — glass panellerin arkasında blur'lanır */
body::before, body::after {
  content: ""; position: fixed; z-index: -1; border-radius: 50%;
  pointer-events: none; filter: blur(6px);
}
body::before {
  width: 460px; height: 460px; top: 12%; left: -120px;
  background: radial-gradient(circle at 35% 35%, rgba(57,179,172,.55), rgba(33,128,121,.18) 70%, transparent);
  animation: floatA 18s ease-in-out infinite;
}
body::after {
  width: 520px; height: 520px; bottom: 6%; right: -140px;
  background: radial-gradient(circle at 60% 40%, rgba(95,203,193,.5), rgba(33,128,121,.16) 70%, transparent);
  animation: floatB 22s ease-in-out infinite;
}
@keyframes floatA { 0%,100% { transform: translate(0,0); } 50% { transform: translate(40px, -30px); } }
@keyframes floatB { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-50px, 36px); } }
@media (prefers-reduced-motion: reduce) { body::before, body::after { animation: none; } }

img { max-width: 100%; display: block; }
/* Inline SVG güvenli varsayılanı — açıkça boyut verilmeyen ikonlar dev görünmesin */
svg { width: 1em; height: 1em; }
a { color: var(--teal-600); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--teal-400); }
ul { list-style: none; }

h1, h2, h3, h4 { line-height: 1.2; color: var(--ink); font-weight: 700; }

/* ----------  YARDIMCI / UTILITIES  ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 22px;
}
.section { padding: 84px 0; position: relative; }
.section-sm { padding: 54px 0; position: relative; }
.text-center { text-align: center; }

/* İçerik bölümlerine renkli dekoratif lekeler — glass panellerin
   arkasında her zaman bir renk bulunsun ki cam efekti belirgin olsun. */
.section::before, .section-sm::before {
  content: ""; position: absolute; z-index: 0; pointer-events: none;
  width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(57,179,172,.34), transparent 68%);
  top: 8%; right: -90px; filter: blur(8px);
}
.section::after, .section-sm::after {
  content: ""; position: absolute; z-index: 0; pointer-events: none;
  width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(33,128,121,.26), transparent 68%);
  bottom: 6%; left: -80px; filter: blur(8px);
}
.section > .container, .section-sm > .container { position: relative; z-index: 1; }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
  color: var(--teal-500);
  background: var(--teal-50);
  padding: 6px 16px; border-radius: 999px; margin-bottom: 16px;
  border: 1px solid var(--teal-100);
}
.section-head h2 { font-size: clamp(26px, 3.4vw, 40px); letter-spacing: -0.5px; }
.section-head p { color: var(--ink-soft); margin-top: 12px; font-size: 17px; }

/* ----------  CAM PANEL / GLASS PANEL  ---------- */
.glass {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,.55);
  border-radius: var(--radius);
}
/* Cam üst parlaması — gerçekçi ışık yansıması */
.glass::after,
.cat-card::after,
.product-card::after,
.news-card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background: linear-gradient(180deg, rgba(255,255,255,.35), rgba(255,255,255,0) 42%);
  z-index: 1;
}
.glass > *, .cat-card > *, .product-card > *, .news-card > * { position: relative; z-index: 2; }

/* ----------  BUTONLAR / BUTTONS  ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 600; font-size: 15px;
  padding: 13px 26px; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary {
  background: linear-gradient(135deg, var(--teal-400), var(--teal-600));
  color: #fff;
  box-shadow: 0 10px 24px rgba(33, 128, 121, 0.32);
}
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 16px 34px rgba(33, 128, 121, 0.42); }
.btn-ghost {
  background: var(--glass-bg-2);
  border-color: var(--glass-border);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  color: var(--ink);
}
.btn-ghost:hover { color: var(--teal-600); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--teal-700); box-shadow: var(--shadow); }
.btn-light:hover { color: var(--teal-500); transform: translateY(-2px); }
.btn-wa { background: #25D366; color: #fff; box-shadow: 0 10px 24px rgba(37, 211, 102, 0.32); }
.btn-wa:hover { background: #1ebe5a; color: #fff; transform: translateY(-2px); }

/* =====================================================================
   ÜST BAR + HEADER
   ===================================================================== */
.topbar {
  background: var(--teal-800);
  color: rgba(255, 255, 255, 0.86);
  font-size: 13.5px;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; min-height: 42px; gap: 16px; flex-wrap: wrap; }
.topbar a { color: rgba(255, 255, 255, 0.86); }
.topbar a:hover { color: #fff; }
.topbar-info { display: flex; gap: 22px; flex-wrap: wrap; }
.topbar-info span { display: inline-flex; align-items: center; gap: 7px; }
.topbar-info svg { width: 15px; height: 15px; opacity: .85; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.5);
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(20, 59, 56, 0.10); background: rgba(255, 255, 255, 0.74); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 78px; gap: 20px; }

.brand img { height: 50px; width: auto; }

.main-nav ul { display: flex; gap: 6px; align-items: center; }
.main-nav a {
  display: inline-block; padding: 10px 16px; border-radius: 10px;
  color: var(--ink); font-weight: 600; font-size: 15px;
  transition: background var(--transition), color var(--transition);
}
.main-nav a:hover, .main-nav a.active { color: var(--teal-600); background: var(--teal-50); }
/* Mobil menü başlığı (logo + kapat) yalnızca mobilde görünür */
.main-nav-head { display: none; }

.header-actions { display: flex; align-items: center; gap: 10px; }

/* Dil seçici */
.lang-switch { display: inline-flex; background: var(--teal-50); border: 1px solid var(--teal-100); border-radius: 999px; padding: 3px; }
.lang-switch a {
  font-size: 13px; font-weight: 700; padding: 5px 12px; border-radius: 999px; color: var(--muted);
}
.lang-switch a.active { background: linear-gradient(135deg, var(--teal-400), var(--teal-600)); color: #fff; }

/* Hamburger */
.nav-toggle { display: none; background: var(--teal-50); border: 1px solid var(--teal-100); width: 44px; height: 44px; border-radius: 12px; cursor: pointer; align-items: center; justify-content: center; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 20px; height: 2px; background: var(--teal-700); border-radius: 2px; transition: var(--transition); position: relative;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after  { position: absolute; top: 6px; }

/* =====================================================================
   HERO
   ===================================================================== */
.hero { position: relative; padding: 96px 0 90px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(620px 420px at 78% 22%, rgba(57, 179, 172, 0.22), transparent 62%),
    radial-gradient(520px 380px at 12% 80%, rgba(33, 128, 121, 0.14), transparent 60%);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero-content .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--teal-600); background: var(--white); padding: 8px 16px; border-radius: 999px;
  box-shadow: var(--shadow); margin-bottom: 22px;
}
.hero-content .eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--teal-400); box-shadow: 0 0 0 4px rgba(57,179,172,.22); }
.hero h1 { font-size: clamp(34px, 5vw, 56px); letter-spacing: -1px; margin-bottom: 18px; }
.hero h1 .accent { background: linear-gradient(120deg, var(--teal-400), var(--teal-600)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero p.lead { font-size: 19px; color: var(--ink-soft); max-width: 540px; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual { position: relative; }
.hero-card {
  padding: 30px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.hero-stat { text-align: center; padding: 22px 12px; border-radius: var(--radius-sm); background: rgba(255,255,255,.5); border: 1px solid var(--glass-border); }
.hero-stat .num { font-size: 34px; font-weight: 800; color: var(--teal-600); line-height: 1; }
.hero-stat .lbl { font-size: 13.5px; color: var(--ink-soft); margin-top: 8px; font-weight: 600; }
.hero-badge {
  position: absolute; bottom: -22px; right: -10px;
  display: flex; align-items: center; gap: 10px;
  background: #fff; padding: 12px 18px; border-radius: 14px; box-shadow: var(--shadow-lg);
}
.hero-badge img { width: 38px; height: 38px; }
.hero-badge b { font-size: 14px; color: var(--ink); }
.hero-badge small { display: block; color: var(--muted); font-size: 12px; }

/* =====================================================================
   ÖZELLİKLER / FEATURES
   ===================================================================== */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature-card { padding: 30px 26px; text-align: center; transition: transform var(--transition), box-shadow var(--transition); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-icon {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--teal-400), var(--teal-600));
  color: #fff; box-shadow: 0 12px 24px rgba(33,128,121,.28);
}
.feature-icon svg { width: 30px; height: 30px; }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { color: var(--ink-soft); font-size: 14.5px; }

/* =====================================================================
   KATEGORİLER / CATEGORIES
   ===================================================================== */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cat-card {
  position: relative; overflow: hidden; border-radius: var(--radius);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  display: flex; flex-direction: column;
}
.cat-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); background: rgba(255,255,255,.72); }
.cat-thumb { aspect-ratio: 4 / 3; background: rgba(234,250,248,.5); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.cat-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.cat-card:hover .cat-thumb img { transform: scale(1.08); }
.cat-body { padding: 20px 22px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.cat-body h3 { font-size: 18px; }
.cat-body .count { font-size: 13px; color: var(--muted); font-weight: 600; }
.cat-body .go { margin-top: auto; padding-top: 12px; color: var(--teal-600); font-weight: 700; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.cat-card:hover .go { gap: 10px; }

/* "Detayları Gör" / "View Details" ok ikonlarının boyutu */
.go svg { width: 16px; height: 16px; flex: none; }

/* =====================================================================
   ÜRÜNLER / PRODUCTS
   ===================================================================== */
.products-layout { display: grid; grid-template-columns: 270px 1fr; gap: 34px; align-items: start; }

.cat-sidebar { position: sticky; top: 96px; padding: 20px; }
.cat-sidebar h4 { font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 14px; }
.cat-sidebar ul { display: flex; flex-direction: column; gap: 4px; }
.cat-sidebar a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 11px 14px; border-radius: 10px; color: var(--ink); font-weight: 600; font-size: 14.5px;
}
.cat-sidebar a:hover, .cat-sidebar a.active { background: var(--teal-50); color: var(--teal-600); }
.cat-sidebar a .pill { background: rgba(33,128,121,.10); color: var(--teal-600); font-size: 12px; padding: 1px 9px; border-radius: 999px; font-weight: 700; }
.cat-sidebar a.active .pill { background: var(--teal-500); color: #fff; }

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card {
  background: var(--glass-bg); border-radius: var(--radius); overflow: hidden; box-shadow: var(--glass-shadow);
  display: flex; flex-direction: column; transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); background: rgba(255,255,255,.72); }
.product-thumb {
  aspect-ratio: 16 / 11; background: linear-gradient(135deg, rgba(234,250,248,.55), rgba(255,255,255,.25));
  display: flex; align-items: center; justify-content: center; padding: 18px; position: relative;
}
.product-thumb img { max-height: 100%; width: auto; object-fit: contain; mix-blend-mode: multiply; }
.product-thumb .ph-icon { width: 72px; height: 72px; color: var(--teal-200); }
.product-cat-tag {
  position: absolute; top: 12px; left: 12px; background: rgba(255,255,255,.85);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  color: var(--teal-700); font-size: 11.5px; font-weight: 700; padding: 4px 11px; border-radius: 999px;
}
.product-body { padding: 18px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { font-size: 16px; margin-bottom: 8px; line-height: 1.35; }
.product-body p { font-size: 13.8px; color: var(--ink-soft); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.product-body .go { margin-top: auto; padding-top: 14px; color: var(--teal-600); font-weight: 700; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.product-card:hover .go { gap: 10px; }

/* Ürün detay */
.product-detail { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 44px; align-items: start; }
.product-gallery { padding: 30px; aspect-ratio: 1; display: flex; align-items: center; justify-content: center; position: sticky; top: 96px; }
.product-gallery img { max-height: 360px; width: auto; object-fit: contain; mix-blend-mode: multiply; }
.product-gallery .ph-icon { width: 140px; height: 140px; color: var(--teal-200); }
.product-info .tag { display: inline-block; background: var(--teal-50); color: var(--teal-600); font-size: 13px; font-weight: 700; padding: 6px 14px; border-radius: 999px; margin-bottom: 16px; border: 1px solid var(--teal-100); }
.product-info h1 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 20px; letter-spacing: -0.5px; }
.product-desc { font-size: 16px; color: var(--ink-soft); white-space: pre-line; }
.product-usage-box { margin-top: 24px; padding: 20px 22px; border-radius: var(--radius-sm); background: var(--teal-50); border-left: 4px solid var(--teal-400); }
.product-usage-box h4 { font-size: 14px; color: var(--teal-700); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 6px; }
.product-actions { margin-top: 30px; display: flex; gap: 12px; flex-wrap: wrap; }

/* =====================================================================
   İÇ SAYFA BAŞLIĞI / PAGE HEADER
   ===================================================================== */
.page-hero { position: relative; padding: 64px 0 56px; background: linear-gradient(135deg, var(--teal-700), var(--teal-900)); color: #fff; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(600px 300px at 85% -20%, rgba(95,203,193,.30), transparent 60%); }
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: #fff; font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.5px; }
.page-hero p { color: rgba(255,255,255,.82); margin-top: 10px; font-size: 17px; max-width: 620px; }
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 14px; color: rgba(255,255,255,.7); margin-bottom: 14px; }
.breadcrumb a { color: rgba(255,255,255,.9); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { opacity: .6; }

/* =====================================================================
   HAKKIMIZDA / ABOUT
   ===================================================================== */
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.about-text p { color: var(--ink-soft); font-size: 16.5px; margin-bottom: 16px; }
.mvv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 8px; }
.mvv-card { padding: 30px 26px; }
.mvv-card .feature-icon { margin: 0 0 16px; }
.mvv-card h3 { font-size: 19px; margin-bottom: 10px; }
.mvv-card p { color: var(--ink-soft); font-size: 14.5px; }
.about-visual { padding: 30px; }
.about-visual ul { display: flex; flex-direction: column; gap: 16px; }
.about-visual li { display: flex; gap: 14px; align-items: flex-start; }
.about-visual .ck { flex: none; width: 30px; height: 30px; border-radius: 50%; background: linear-gradient(135deg, var(--teal-400), var(--teal-600)); color: #fff; display: flex; align-items: center; justify-content: center; }
.about-visual .ck svg { width: 16px; height: 16px; }
.about-visual li b { display: block; color: var(--ink); }
.about-visual li span { color: var(--ink-soft); font-size: 14.5px; }

/* =====================================================================
   HABERLER / NEWS
   ===================================================================== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--glass-bg); border: 1px solid var(--glass-border); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur); border-radius: var(--radius); overflow: hidden; box-shadow: var(--glass-shadow); transition: transform var(--transition), box-shadow var(--transition), background var(--transition); display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); background: rgba(255,255,255,.72); }
.news-thumb { aspect-ratio: 16/9; background: linear-gradient(135deg, var(--teal-400), var(--teal-700)); display: flex; align-items: center; justify-content: center; overflow:hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-thumb svg { width: 56px; height: 56px; color: rgba(255,255,255,.55); }
.news-body { padding: 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-date { font-size: 13px; color: var(--teal-600); font-weight: 700; margin-bottom: 10px; }
.news-body h3 { font-size: 18px; margin-bottom: 10px; line-height: 1.35; }
.news-body p { color: var(--ink-soft); font-size: 14.5px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-body .go { margin-top: auto; padding-top: 14px; color: var(--teal-600); font-weight: 700; font-size: 14px; }

.article { max-width: 800px; margin: 0 auto; }
.article .news-date { font-size: 14px; }
.article h1 { font-size: clamp(26px, 4vw, 38px); margin: 8px 0 24px; }
.article-body { font-size: 17px; color: var(--ink-soft); white-space: pre-line; }
.article-hero { border-radius: var(--radius); overflow: hidden; margin-bottom: 30px; box-shadow: var(--shadow); }

/* =====================================================================
   İLETİŞİM / CONTACT
   ===================================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 36px; align-items: stretch; }
/* Sol sütun: bilgi kartı + WhatsApp kartı dikey kolon olarak */
.contact-col { display: flex; flex-direction: column; }
.contact-info-card { padding: 34px; }
.contact-info-card h3 { font-size: 22px; margin-bottom: 24px; }
.contact-list { display: flex; flex-direction: column; gap: 20px; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; }
.contact-list .ico { flex: none; width: 46px; height: 46px; border-radius: 13px; background: var(--teal-50); color: var(--teal-600); display: flex; align-items: center; justify-content: center; border: 1px solid var(--teal-100); }
.contact-list .ico svg { width: 21px; height: 21px; }
.contact-list .label { font-size: 13px; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: .4px; }
.contact-list .value { color: var(--ink); font-weight: 600; }
.contact-list .value a { color: var(--ink); }
.contact-list .value a:hover { color: var(--teal-600); }

.wa-card { margin-top: 24px; padding: 24px; background: linear-gradient(135deg, #25D366, #128C7E); color: #fff; border-radius: var(--radius); display: flex; gap: 16px; align-items: center; box-shadow: 0 16px 36px rgba(18,140,126,.30); }
.contact-col .wa-card { margin-top: auto; } /* WhatsApp kartını sütun altına sabitle */
.contact-col .contact-info-card { margin-bottom: 24px; }
.wa-card .wa-ico { flex: none; width: 52px; height: 52px; background: rgba(255,255,255,.2); border-radius: 14px; display: flex; align-items: center; justify-content: center; }
.wa-card .wa-ico svg { width: 30px; height: 30px; fill: #fff; }
.wa-card h4 { color: #fff; font-size: 17px; margin-bottom: 3px; }
.wa-card p { font-size: 13.5px; color: rgba(255,255,255,.9); margin-bottom: 12px; }
.wa-card .btn-light { background: #fff; color: #128C7E; padding: 9px 18px; font-size: 14px; }

.contact-form-card { padding: 34px; display: flex; flex-direction: column; }
.contact-form-card h3 { font-size: 22px; margin-bottom: 22px; }
.contact-form-card form { display: flex; flex-direction: column; flex: 1; }
/* Mesaj grubu büyüsün, textarea formu sol sütun yüksekliğine kadar uzasın */
.form-group.grow { flex: 1; display: flex; flex-direction: column; }
.form-group.grow textarea.form-control { flex: 1; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-soft); margin-bottom: 7px; }
.form-control {
  width: 100%; padding: 13px 16px; font-size: 15px; font-family: inherit; color: var(--ink);
  background: rgba(255,255,255,.7); border: 1px solid rgba(33,128,121,.18); border-radius: 12px;
  transition: border var(--transition), box-shadow var(--transition);
}
.form-control:focus { outline: none; border-color: var(--teal-400); box-shadow: 0 0 0 4px rgba(57,179,172,.14); background: #fff; }
textarea.form-control { resize: vertical; min-height: 130px; }

.alert { padding: 14px 18px; border-radius: 12px; font-size: 14.5px; font-weight: 600; margin-bottom: 18px; }
.alert-success { background: #e7f7ee; color: #157347; border: 1px solid #b7e4c7; }
.alert-error   { background: #fdeaea; color: #b02a37; border: 1px solid #f5c2c7; }

.map-wrap { margin-top: 56px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--glass-border); }
.map-wrap iframe { width: 100%; height: 380px; border: 0; display: block; }

/* =====================================================================
   CTA ŞERİT / CTA BAND
   ===================================================================== */
.cta-band { position: relative; padding: 64px 0; overflow: hidden; }
.cta-inner { padding: 48px; text-align: center; background: linear-gradient(135deg, var(--teal-600), var(--teal-900)); border-radius: var(--radius-lg); color: #fff; position: relative; overflow: hidden; }
.cta-inner::after { content: ""; position: absolute; inset: 0; background: radial-gradient(500px 260px at 80% -10%, rgba(95,203,193,.35), transparent 60%); }
.cta-inner > * { position: relative; z-index: 1; }
.cta-inner h2 { color: #fff; font-size: clamp(24px, 3.4vw, 36px); margin-bottom: 12px; }
.cta-inner p { color: rgba(255,255,255,.9); font-size: 17px; max-width: 560px; margin: 0 auto 26px; }
.cta-inner .cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* =====================================================================
   FOOTER
   ===================================================================== */
.site-footer { background: var(--bg-deep); color: rgba(255,255,255,.72); padding-top: 64px; margin-top: 20px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 44px; }
.footer-brand img { box-sizing: content-box; height: 42px; width: auto; display: block; margin-bottom: 18px; background: #fff; padding: 9px 14px; border-radius: 12px; box-shadow: 0 6px 18px rgba(0,0,0,.25); }
.footer-brand p { font-size: 14.5px; line-height: 1.7; max-width: 320px; }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14);
  color: rgba(255,255,255,.85); transition: var(--transition);
}
.footer-social a svg { width: 19px; height: 19px; }
.footer-social a:hover { background: linear-gradient(135deg, var(--teal-400), var(--teal-600)); color: #fff; border-color: transparent; transform: translateY(-2px); }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: rgba(255,255,255,.72); font-size: 14.5px; }
.footer-col a:hover { color: var(--teal-300); }
.footer-contact li { display: flex; gap: 11px; font-size: 14.5px; margin-bottom: 14px; align-items: flex-start; }
.footer-contact svg { width: 18px; height: 18px; flex: none; margin-top: 2px; color: var(--teal-300); }
.footer-contact a { color: rgba(255,255,255,.72); }
.footer-contact a:hover { color: var(--teal-300); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.10); padding: 22px 0; display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; font-size: 13.5px; }
.footer-bottom a { color: var(--teal-300); }
.footer-credit { color: rgba(255,255,255,.55); }
.footer-credit a { font-weight: 700; color: var(--teal-300); }
.footer-credit a:hover { color: #fff; }

/* =====================================================================
   WHATSAPP YÜZEN BUTON / FLOATING BUTTON
   ===================================================================== */
.wa-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 200;
  display: inline-flex; align-items: center; gap: 0;
  background: #25D366; color: #fff; border-radius: 999px;
  padding: 0; height: 60px; width: 60px;
  box-shadow: 0 12px 30px rgba(37,211,102,.45);
  overflow: hidden; transition: width var(--transition), padding var(--transition), background var(--transition);
}
.wa-float .wa-ic { flex: none; width: 60px; height: 60px; display: flex; align-items: center; justify-content: center; }
.wa-float .wa-ic svg { width: 32px; height: 32px; fill: #fff; }
.wa-float .wa-tx { white-space: nowrap; font-weight: 700; font-size: 15px; opacity: 0; max-width: 0; transition: opacity var(--transition), max-width var(--transition); }
.wa-float:hover { width: 218px; background: #1ebe5a; color: #fff; }
.wa-float:hover .wa-tx { opacity: 1; max-width: 160px; padding-right: 22px; }
.wa-float::after { content: ""; position: absolute; inset: 0; border-radius: 999px; box-shadow: 0 0 0 0 rgba(37,211,102,.5); animation: waPulse 2.4s infinite; z-index: -1; }
@keyframes waPulse { 0% { box-shadow: 0 0 0 0 rgba(37,211,102,.5); } 70% { box-shadow: 0 0 0 18px rgba(37,211,102,0); } 100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); } }

/* Scroll-to-top */
.to-top { position: fixed; left: 22px; bottom: 22px; z-index: 190; width: 46px; height: 46px; border-radius: 50%; background: var(--teal-600); color: #fff; border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transform: translateY(12px); transition: var(--transition); box-shadow: var(--shadow); }
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--teal-500); }
.to-top svg { width: 20px; height: 20px; }

/* =====================================================================
   REVEAL ANIMASYON
   ===================================================================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* =====================================================================
   DUYARLI / RESPONSIVE
   ===================================================================== */
/* Tablet yatay / küçük masaüstü */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-content { text-align: center; }
  .hero-content .lead { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-visual { max-width: 520px; margin: 0 auto; width: 100%; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Tablet dikey (iPad vb.) */
@media (max-width: 900px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 64px 0; }
  .section-sm { padding: 44px 0; }
  /* Header'da İletişim butonunu gizle; hamburger menüde zaten var */
  .header-cta { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { gap: 32px; }
  .mvv-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  /* Mobilde header'ın backdrop-filter'ı, fixed alt menü için containing-block
     oluşturup paneli header içine hapsediyordu. Bunu kaldırıp paneli
     viewport'a göre tam ekran açıyoruz. */
  .site-header { -webkit-backdrop-filter: none; backdrop-filter: none; background: rgba(255,255,255,.96); }
  .site-header.scrolled { background: #fff; }
  /* Menü açıkken header'ı (ve içindeki fixed menüyü) backdrop'un üstüne çıkar,
     aksi halde backdrop menünün üzerine binip tıklamayı engelliyordu. */
  body.menu-open .site-header { z-index: 1300; }

  .main-nav {
    position: fixed; top: 0; right: 0; bottom: 0; left: auto;
    width: min(330px, 86vw); height: 100vh; z-index: 1200;
    background: #fff; box-shadow: -12px 0 44px rgba(20,59,56,.22);
    transform: translateX(100%); transition: transform .3s ease;
    padding: 16px 18px 30px; display: flex; flex-direction: column;
    overflow-y: auto; -webkit-backdrop-filter: none; backdrop-filter: none;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav-head { display: flex; align-items: center; justify-content: space-between; padding: 6px 6px 16px; margin-bottom: 10px; border-bottom: 1px solid var(--teal-50); }
  .main-nav-head img { height: 38px; width: auto; }
  .nav-close { background: var(--teal-50); border: 1px solid var(--teal-100); width: 40px; height: 40px; border-radius: 10px; color: var(--teal-700); cursor: pointer; display: flex; align-items: center; justify-content: center; }
  .nav-close svg { width: 20px; height: 20px; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .main-nav a {
    display: flex; align-items: center; justify-content: space-between;
    padding: 15px 16px; font-size: 16px; font-weight: 600; border-radius: 10px;
    color: var(--ink); opacity: 1; border-bottom: 1px solid var(--teal-50);
  }
  .main-nav a:hover, .main-nav a:active { background: var(--teal-50); color: var(--teal-700); }
  .main-nav a.active { background: linear-gradient(135deg, var(--teal-400), var(--teal-600)); color: #fff; border-bottom-color: transparent; }
  .nav-backdrop { position: fixed; inset: 0; background: rgba(15,44,43,.5); z-index: 1100; opacity: 0; visibility: hidden; transition: var(--transition); }
  .nav-backdrop.show { opacity: 1; visibility: visible; }

  .products-layout { grid-template-columns: 1fr; }
  .cat-sidebar { position: static; }
  .product-detail { grid-template-columns: 1fr; }
  .product-gallery { position: static; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .section { padding: 56px 0; }
  .features-grid, .cat-grid, .product-grid, .news-grid, .mvv-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-card { grid-template-columns: 1fr 1fr; }
  .topbar-info { gap: 14px; }
  .hero { padding: 60px 0 70px; }
  .cta-inner { padding: 34px 22px; }
}