/* ==========================================================================
   Technoplan — Kurumsal Web Sitesi
   Neşe Plastik San. ve Tic. A.Ş.
   Marka renkleri mevcut siteden korunmuştur: #003366 / #0f459b / #f26522
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root {
  /* Brand — logodan ve mevcut siteden alındı */
  --navy-900: #001e3d;
  --navy-800: #003366;   /* ana kurumsal lacivert */
  --navy-700: #0a3d78;
  --navy-600: #0f459b;   /* mevcut sitedeki vurgu mavisi */
  --navy-500: #1a5bc4;
  --navy-050: #eef4fc;

  --orange-600: #d94f12;
  --orange-500: #f26522; /* logo turuncusu */
  --orange-400: #ff8348;
  --orange-050: #fff3ec;

  /* Neutrals */
  --ink-900: #0d1520;
  --ink-700: #2c3a4b;
  --ink-500: #5a6b7f;
  --ink-400: #7d8da1;
  --ink-300: #b4c0cd;
  --ink-200: #dde4ec;
  --ink-100: #eef2f7;
  --ink-050: #f6f8fb;
  --white: #ffffff;

  --ok-500: #0f9d58;

  /* Typography */
  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --font-head: 'Barlow Condensed', 'Inter', 'Segoe UI', system-ui, sans-serif;

  /* Spacing / layout */
  --wrap: 1240px;
  --wrap-narrow: 940px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4rem, 9vw, 7.5rem);

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(13, 21, 32, .06), 0 1px 3px rgba(13, 21, 32, .08);
  --shadow: 0 4px 12px rgba(13, 21, 32, .07), 0 12px 28px rgba(13, 21, 32, .07);
  --shadow-lg: 0 18px 48px rgba(0, 30, 61, .16);

  --header-h: 76px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* sabit header'ın anchor içeriğini kapatmaması için */
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink-700);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy-600); text-decoration: none; }
a:hover { color: var(--orange-500); }

h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  color: var(--navy-800);
  line-height: 1.12;
  margin: 0 0 .5em;
  font-weight: 600;
  letter-spacing: -.005em;
}
h1 { font-size: clamp(2.4rem, 5.6vw, 4.1rem); text-transform: uppercase; letter-spacing: .01em; }
h2 { font-size: clamp(1.9rem, 3.9vw, 3rem); text-transform: uppercase; }
h3 { font-size: clamp(1.3rem, 2.1vw, 1.7rem); }
h4 { font-size: 1.12rem; font-family: var(--font-sans); font-weight: 700; letter-spacing: 0; }
p { margin: 0 0 1.1rem; }
p:last-child { margin-bottom: 0; }

::selection { background: var(--navy-600); color: #fff; }

:focus-visible {
  outline: 3px solid var(--orange-500);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- 3. Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.wrap--narrow { max-width: var(--wrap-narrow); }
.section { padding-block: var(--section-y); position: relative; }
.section--tint { background: var(--ink-050); }
.section--navy { background: var(--navy-800); color: rgba(255,255,255,.82); }
.section--navy h2, .section--navy h3 { color: #fff; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--navy-800); color: #fff; padding: .8rem 1.4rem; border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* Section heading block */
.sec-head { max-width: 760px; margin-bottom: clamp(2.2rem, 4vw, 3.4rem); }
.sec-head--center { margin-inline: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-sans);
  font-size: .78rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--orange-500); margin-bottom: .9rem;
}
.eyebrow::before {
  content: ''; width: 28px; height: 2px; background: var(--orange-500); display: block;
}
.sec-head--center .eyebrow::after {
  content: ''; width: 28px; height: 2px; background: var(--orange-500); display: block;
}
.section--navy .eyebrow { color: var(--orange-400); }
.section--navy .eyebrow::before, .section--navy .eyebrow::after { background: var(--orange-400); }
.sec-head p { font-size: 1.06rem; color: var(--ink-500); }
.section--navy .sec-head p { color: rgba(255,255,255,.72); }

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  font-family: var(--font-sans); font-size: .95rem; font-weight: 600;
  padding: .85rem 1.6rem; border-radius: var(--radius-sm); border: 2px solid transparent;
  cursor: pointer; transition: all .22s var(--ease); text-align: center;
}
.btn svg { width: 1.05em; height: 1.05em; flex: none; }
.btn--primary { background: var(--orange-500); color: #fff; border-color: var(--orange-500); }
.btn--primary:hover { background: var(--orange-600); border-color: var(--orange-600); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(242,101,34,.32); }
.btn--navy { background: var(--navy-800); color: #fff; border-color: var(--navy-800); }
.btn--navy:hover { background: var(--navy-700); border-color: var(--navy-700); color: #fff; transform: translateY(-2px); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn--ghost:hover { background: #fff; color: var(--navy-800); border-color: #fff; }
.btn--outline { background: transparent; color: var(--navy-800); border-color: var(--ink-200); }
.btn--outline:hover { border-color: var(--navy-800); color: var(--navy-800); background: var(--navy-050); }

/* ==========================================================================
   5. HEADER
   ========================================================================== */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ink-200);
  transition: box-shadow .25s var(--ease), background .25s var(--ease);
}
.header.is-stuck { box-shadow: var(--shadow-sm); }

/* Üst ince şerit — iletişim bilgileri */
.topbar {
  background: var(--navy-800); color: rgba(255,255,255,.86);
  font-size: .82rem; line-height: 1;
}
.topbar__inner { display: flex; align-items: center; justify-content: flex-end; gap: 1.6rem; height: 38px; }
.topbar a { color: rgba(255,255,255,.86); display: inline-flex; align-items: center; gap: .45rem; transition: color .2s; }
.topbar a:hover { color: #fff; }
.topbar svg { width: 14px; height: 14px; opacity: .8; }

.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; height: var(--header-h);
}
.brand { display: flex; align-items: center; flex: none; }
.brand img { height: 54px; width: auto; }

/* Nav */
.nav { display: flex; align-items: center; gap: .15rem; }
.nav a {
  position: relative; padding: .6rem .95rem; border-radius: var(--radius-sm);
  font-size: .93rem; font-weight: 600; color: var(--ink-700);
  transition: color .2s var(--ease);
  white-space: nowrap;
}
.nav a::after {
  content: ''; position: absolute; left: .95rem; right: .95rem; bottom: .28rem;
  height: 2px; background: var(--orange-500);
  transform: scaleX(0); transform-origin: left; transition: transform .26s var(--ease);
}
.nav a:hover, .nav a.is-active { color: var(--navy-800); }
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); }

.header__actions { display: flex; align-items: center; gap: .9rem; flex: none; }

/* Dil değiştirici */
.lang { display: flex; align-items: center; border: 1px solid var(--ink-200); border-radius: var(--radius-sm); overflow: hidden; }
.lang button {
  border: 0; background: transparent; cursor: pointer;
  font-family: var(--font-sans); font-size: .8rem; font-weight: 700; letter-spacing: .04em;
  color: var(--ink-500); padding: .42rem .68rem; transition: all .18s;
}
.lang button:hover { color: var(--navy-800); background: var(--ink-100); }
.lang button.is-active { background: var(--navy-800); color: #fff; }

/* Hamburger */
.burger {
  display: none; width: 44px; height: 44px; border: 1px solid var(--ink-200);
  background: #fff; border-radius: var(--radius-sm); cursor: pointer;
  padding: 0; place-items: center;
}
.burger span { display: block; width: 20px; height: 2px; background: var(--navy-800); position: relative; transition: background .2s; }
.burger span::before, .burger span::after {
  content: ''; position: absolute; left: 0; width: 20px; height: 2px; background: var(--navy-800);
  transition: transform .28s var(--ease), top .28s var(--ease);
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
.burger[aria-expanded="true"] span { background: transparent; }
.burger[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.burger[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* ==========================================================================
   6. HERO
   ========================================================================== */
.hero {
  position: relative; margin-top: calc(var(--header-h) + 38px);
  min-height: clamp(560px, 82vh, 780px);
  display: grid; align-items: center;
  background: var(--navy-900);
  overflow: hidden;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: .58; }
.hero__bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(105deg, rgba(0,30,61,.90) 0%, rgba(0,51,102,.72) 42%, rgba(0,51,102,.28) 100%);
}
/* teknik ızgara dokusu — sektörel his */
.hero__grid {
  position: absolute; inset: 0; z-index: 1; opacity: .18;
  background-image:
    linear-gradient(rgba(255,255,255,.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.14) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 70% 40%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 70% 40%, #000 10%, transparent 75%);
}
.hero__inner { position: relative; z-index: 2; padding-block: clamp(3.5rem, 8vw, 6rem); }
.hero__content { max-width: 760px; }
.hero .eyebrow { color: var(--orange-400); }
.hero .eyebrow::before { background: var(--orange-400); }
.hero h1 { color: #fff; margin-bottom: 1.1rem; }
.hero h1 em {
  font-style: normal; color: var(--orange-400); display: block;
}
.hero__lead {
  font-size: clamp(1.05rem, 1.9vw, 1.28rem); color: rgba(255,255,255,.86);
  max-width: 620px; margin-bottom: 2.2rem;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: .9rem; }

/* Hero altı istatistik şeridi */
.hero__stats {
  position: relative; z-index: 2;
  border-top: 1px solid rgba(255,255,255,.16);
  background: rgba(0,20,41,.5);
  backdrop-filter: blur(6px);
}
.hero__stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.stat { padding: 1.6rem 1.2rem; text-align: center; border-left: 1px solid rgba(255,255,255,.12); }
.stat:first-child { border-left: 0; }
.stat__num {
  font-family: var(--font-head); font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 600;
  color: #fff; line-height: 1; display: block; margin-bottom: .35rem;
}
.stat__num span { color: var(--orange-400); }
.stat__label { font-size: .82rem; color: rgba(255,255,255,.7); letter-spacing: .04em; }

/* ==========================================================================
   7. KURUMSAL
   ========================================================================== */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 5vw, 4.5rem); align-items: center;
}
.about__body p { margin-bottom: 1.15rem; }
.about__body p:first-of-type {
  font-size: 1.14rem; color: var(--ink-900); font-weight: 500; line-height: 1.62;
}
.about__media { position: relative; }
.about__media img { border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 100%; }
/* deneyim rozeti */
.badge-exp {
  position: absolute; left: -18px; bottom: -22px;
  background: var(--orange-500); color: #fff;
  padding: 1.15rem 1.5rem; border-radius: var(--radius);
  box-shadow: var(--shadow-lg); text-align: center; max-width: 200px;
}
.badge-exp strong { font-family: var(--font-head); font-size: 2.1rem; display: block; line-height: 1; }
.badge-exp span { font-size: .8rem; line-height: 1.35; display: block; margin-top: .25rem; opacity: .95; }

/* Değer kartları */
.values { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; margin-top: clamp(2.8rem, 5vw, 4rem); }
.value {
  background: #fff; border: 1px solid var(--ink-200); border-radius: var(--radius);
  padding: 1.7rem 1.5rem; transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
}
.value:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--navy-600); }
.value__icon {
  width: 46px; height: 46px; border-radius: 10px; display: grid; place-items: center;
  background: var(--navy-050); color: var(--navy-600); margin-bottom: 1rem;
}
.value__icon svg { width: 24px; height: 24px; }
.value h4 { color: var(--navy-800); margin-bottom: .4rem; }
.value p { font-size: .92rem; color: var(--ink-500); }

/* ==========================================================================
   8. ÜRÜNLER
   ========================================================================== */
/* Filtre sekmeleri */
.filters { display: flex; flex-wrap: wrap; gap: .6rem; justify-content: center; margin-bottom: 2.6rem; }
.filter {
  border: 1px solid var(--ink-200); background: #fff; color: var(--ink-700);
  font-family: var(--font-sans); font-size: .88rem; font-weight: 600;
  padding: .58rem 1.15rem; border-radius: 100px; cursor: pointer; transition: all .2s var(--ease);
}
.filter:hover { border-color: var(--navy-600); color: var(--navy-800); }
.filter.is-active { background: var(--navy-800); border-color: var(--navy-800); color: #fff; }

/* Çatı & Teras alt-filtresi (PVC / TPO) */
.subfilters { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; align-items: center; margin: -1.7rem 0 2.4rem; }
.subfilters[hidden] { display: none; }
.subfilter {
  border: 1px solid var(--ink-200); background: #fff; color: var(--ink-700);
  font-family: var(--font-sans); font-size: .8rem; font-weight: 600;
  padding: .42rem .95rem; border-radius: 100px; cursor: pointer; transition: all .2s var(--ease);
}
.subfilter:hover { border-color: var(--navy-600); color: var(--navy-800); }
.subfilter.is-active { background: var(--navy-600); border-color: var(--navy-600); color: #fff; }

/* auto-fit: son satırda tek kart kalıp boşluk oluşmasını engeller */
.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(330px, 100%), 1fr));
  gap: 1.6rem;
  align-items: start;
}

.card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--ink-200); border-radius: var(--radius);
  overflow: hidden; transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card__media { position: relative; aspect-ratio: 16/10; overflow: hidden; background: var(--ink-100); }
.card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.card:hover .card__media img { transform: scale(1.06); }
.card__tag {
  position: absolute; left: 12px; top: 12px; z-index: 2;
  background: rgba(0,51,102,.92); color: #fff; backdrop-filter: blur(4px);
  font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  padding: .34rem .7rem; border-radius: 4px;
}
.card__tag--tpo { background: rgba(242,101,34,.94); }
.card__body { padding: 1.5rem; display: flex; flex-direction: column; flex: 1; }
.card__code {
  font-family: var(--font-head); font-size: 1.5rem; color: var(--orange-500);
  letter-spacing: .05em; line-height: 1; margin-bottom: .3rem;
}
.card h3 { font-size: 1.22rem; margin-bottom: .6rem; }
.card__desc { font-size: .93rem; color: var(--ink-500); margin-bottom: 1.1rem; }
.card__meta { margin-top: auto; }
.card__std {
  font-size: .78rem; color: var(--ink-400); border-top: 1px solid var(--ink-100);
  padding-top: .85rem; margin-bottom: 1rem; line-height: 1.5;
}
.card__std strong { color: var(--ink-700); font-weight: 600; }
.card .btn { width: 100%; }

/* Ürün detay — accordion içerik */
.detail { border-top: 1px solid var(--ink-100); }
.detail summary {
  list-style: none; cursor: pointer; padding: .9rem 0 .9rem;
  font-size: .88rem; font-weight: 700; color: var(--navy-800);
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
}
.detail summary::-webkit-details-marker { display: none; }
.detail summary::after {
  content: ''; width: 9px; height: 9px; flex: none;
  border-right: 2px solid var(--navy-600); border-bottom: 2px solid var(--navy-600);
  transform: rotate(45deg) translateY(-2px); transition: transform .25s var(--ease);
}
.detail[open] summary::after { transform: rotate(-135deg) translateY(-2px); }
.detail__content { padding-bottom: 1.2rem; font-size: .89rem; color: var(--ink-500); }
.detail__content h5 {
  font-family: var(--font-sans); font-size: .78rem; text-transform: uppercase; letter-spacing: .1em;
  color: var(--navy-700); margin: 1.1rem 0 .5rem;
}
.detail__content h5:first-child { margin-top: 0; }
.detail__content ul { margin: 0; padding-left: 1.1rem; }
.detail__content li { margin-bottom: .3rem; }
.detail__content .codes { list-style: none; padding: 0; }
.detail__content .codes li {
  padding: .42rem .6rem; background: var(--ink-050); border-left: 3px solid var(--navy-600);
  border-radius: 0 4px 4px 0; margin-bottom: .35rem; font-size: .85rem;
}
.detail__content .codes strong { color: var(--navy-800); font-family: var(--font-head); font-size: 1rem; letter-spacing: .03em; }

/* Uyarı kutusu (PVC + Bitüm) */
.notice {
  display: flex; gap: .7rem; align-items: flex-start;
  background: var(--orange-050); border: 1px solid #ffd9c4; border-left: 3px solid var(--orange-500);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: .8rem .9rem; font-size: .84rem; color: #8a3d13; margin-top: 1rem;
}
.notice svg { width: 17px; height: 17px; flex: none; margin-top: .12rem; color: var(--orange-600); }
.notice strong { display: block; margin-bottom: .15rem; color: var(--orange-600); }

/* Doküman (TDS / şartname) linkleri */
.docs { list-style: none; padding: 0; margin: 1rem 0 0; }
.docs li { margin-bottom: .45rem; }
.docs a {
  display: flex; align-items: center; gap: .6rem; font-size: .85rem; font-weight: 500;
  color: var(--navy-700); padding: .58rem .7rem; border: 1px solid var(--ink-200);
  border-radius: var(--radius-sm); background: #fff; transition: all .2s var(--ease); line-height: 1.35;
}
.docs a:hover { border-color: var(--navy-600); background: var(--navy-050); color: var(--navy-800); transform: translateX(3px); }
.docs svg { width: 17px; height: 17px; flex: none; color: var(--orange-500); }

/* Sunucuda bulunmayan / talep üzerine gönderilen dokümanlar */
.doc-missing {
  display: block; font-size: .82rem; color: var(--ink-400); font-style: italic;
  padding: .55rem .7rem; border: 1px dashed var(--ink-200);
  border-radius: var(--radius-sm); background: var(--ink-050); line-height: 1.4;
}

/* ==========================================================================
   9. TEKNİK BİLGİLER
   ========================================================================== */
.tech-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 4vw, 3.4rem); align-items: stretch; }
.tech-block {
  background: #fff; border: 1px solid var(--ink-200); border-radius: var(--radius); padding: clamp(1.6rem, 3vw, 2.2rem);
}
.section--navy .tech-block { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.14); }
.section--navy .tech-block p { color: rgba(255,255,255,.76); }
.tech-block h3 { display: flex; align-items: center; gap: .7rem; margin-bottom: 1rem; }
.tech-block h3 svg { width: 24px; height: 24px; color: var(--orange-500); flex: none; }

/* Avantaj listesi */
.benefits { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; }
.benefits li { display: flex; align-items: flex-start; gap: .65rem; font-size: .94rem; }
.benefits svg { width: 18px; height: 18px; color: var(--ok-500); flex: none; margin-top: .22rem; }
.section--navy .benefits li { color: rgba(255,255,255,.84); }
.section--navy .benefits svg { color: #4ade80; }

/* Kullanım alanları — kategori kartları */
.usage { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; margin-top: clamp(2.5rem, 4vw, 3.5rem); }
.usage__card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius); padding: 1.6rem 1.4rem; transition: all .25s var(--ease);
}
.usage__card:hover { background: rgba(255,255,255,.1); border-color: var(--orange-400); transform: translateY(-4px); }
.usage__card h4 {
  font-family: var(--font-head); font-size: 1.15rem; color: #fff; text-transform: uppercase;
  letter-spacing: .06em; margin-bottom: .9rem; padding-bottom: .7rem;
  border-bottom: 1px solid rgba(255,255,255,.15);
  display: flex; align-items: center; gap: .55rem;
}
.usage__card h4 svg { width: 20px; height: 20px; color: var(--orange-400); flex: none; }
.usage__card ul { list-style: none; padding: 0; margin: 0; }
.usage__card li {
  font-size: .89rem; color: rgba(255,255,255,.76); padding-left: 1rem; position: relative; margin-bottom: .4rem;
}
.usage__card li::before {
  content: ''; position: absolute; left: 0; top: .62em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--orange-400);
}

/* Performans özellikleri — etiket bulutu */
.props { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.2rem; }
.prop {
  display: inline-flex; align-items: center; gap: .45rem;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16);
  color: rgba(255,255,255,.9); border-radius: 100px; padding: .48rem 1rem; font-size: .86rem; font-weight: 500;
}
.prop svg { width: 15px; height: 15px; color: var(--orange-400); flex: none; }

/* ==========================================================================
   10. SERTİFİKALAR
   ========================================================================== */
.certs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.3rem; }
.cert {
  background: #fff; border: 1px solid var(--ink-200); border-radius: var(--radius);
  overflow: hidden; transition: all .25s var(--ease); display: flex; flex-direction: column;
}
.cert:hover { box-shadow: var(--shadow); border-color: var(--navy-600); transform: translateY(-4px); }
.cert__img {
  aspect-ratio: 4/5; background: var(--ink-050); overflow: hidden;
  border-bottom: 1px solid var(--ink-100); position: relative; cursor: zoom-in;
}
.cert__img img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform .5s var(--ease); }
.cert:hover .cert__img img { transform: scale(1.05); }
.cert__cap { padding: .95rem 1.1rem; font-size: .87rem; font-weight: 600; color: var(--navy-800); line-height: 1.4; }

/* Belge/rapor kurumları listesi */
.authorities { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: .8rem; margin-top: 2.6rem; }
.authority {
  display: flex; align-items: center; gap: .7rem; background: #fff;
  border: 1px solid var(--ink-200); border-radius: var(--radius-sm); padding: .95rem 1.1rem;
  font-size: .9rem; font-weight: 500; color: var(--ink-700);
}
.authority svg { width: 19px; height: 19px; color: var(--ok-500); flex: none; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200; display: none;
  background: rgba(0,20,41,.93); padding: 4vh 4vw;
  align-items: center; justify-content: center;
}
.lightbox.is-open { display: flex; }
.lightbox img { max-width: 100%; max-height: 92vh; object-fit: contain; border-radius: 6px; box-shadow: var(--shadow-lg); }
.lightbox__close {
  position: absolute; top: 18px; right: 22px; width: 44px; height: 44px;
  border-radius: 50%; border: 1px solid rgba(255,255,255,.3); background: rgba(255,255,255,.1);
  color: #fff; font-size: 1.5rem; line-height: 1; cursor: pointer; display: grid; place-items: center;
  transition: background .2s;
}
.lightbox__close:hover { background: rgba(255,255,255,.22); }

/* ==========================================================================
   11. REFERANSLAR
   ========================================================================== */
.refs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.ref {
  position: relative; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 4/3; background: var(--navy-800);
}
.ref img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.ref:hover img { transform: scale(1.07); }
.ref__overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
  padding: 1.4rem; color: #fff;
  background: linear-gradient(to top, rgba(0,20,41,.92) 0%, rgba(0,20,41,.35) 48%, transparent 78%);
}
.ref__cat {
  font-size: .72rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--orange-400); margin-bottom: .25rem;
}
.ref__title { font-family: var(--font-head); font-size: 1.28rem; line-height: 1.2; }

/* ==========================================================================
   11b. SIKÇA SORULAN SORULAR
   ========================================================================== */
.faq { display: grid; gap: .7rem; }
.faq__item {
  border: 1px solid var(--ink-200); border-radius: var(--radius);
  background: #fff; overflow: hidden; transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.faq__item[open] { border-color: var(--navy-600); box-shadow: var(--shadow-sm); }
.faq__item summary {
  list-style: none; cursor: pointer;
  padding: 1.05rem 1.3rem;
  font-family: var(--font-sans); font-size: 1rem; font-weight: 600; color: var(--navy-800);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: ''; flex: none; width: 10px; height: 10px;
  border-right: 2px solid var(--orange-500); border-bottom: 2px solid var(--orange-500);
  transform: rotate(45deg) translateY(-3px); transition: transform .25s var(--ease);
}
.faq__item[open] summary::after { transform: rotate(-135deg) translateY(-3px); }
.faq__item summary:hover { color: var(--navy-600); }
.faq__a { padding: 0 1.3rem 1.15rem; color: var(--ink-500); font-size: .95rem; }
.faq-list { margin: .2rem 0 0; padding-left: 1.2rem; }
.faq-list li { margin-bottom: .4rem; }
.faq-list li:last-child { margin-bottom: 0; }

/* ==========================================================================
   12. İLETİŞİM
   ========================================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(2.2rem, 4.5vw, 4rem); }

.info-list { display: grid; gap: 1.4rem; margin-top: 2rem; }
.info {
  display: flex; gap: 1rem; align-items: flex-start;
  padding-bottom: 1.4rem; border-bottom: 1px solid rgba(255,255,255,.14);
}
.info:last-child { border-bottom: 0; padding-bottom: 0; }
.info__icon {
  width: 44px; height: 44px; border-radius: 10px; flex: none; display: grid; place-items: center;
  background: rgba(242,101,34,.16); color: var(--orange-400);
}
.info__icon svg { width: 21px; height: 21px; }
.info__label {
  font-size: .76rem; text-transform: uppercase; letter-spacing: .12em;
  color: rgba(255,255,255,.55); margin-bottom: .2rem;
}
.info__value { color: #fff; font-size: 1rem; line-height: 1.55; }
.info__value a { color: #fff; }
.info__value a:hover { color: var(--orange-400); }

/* Form */
.form-card {
  background: #fff; border-radius: var(--radius-lg); padding: clamp(1.7rem, 3.5vw, 2.6rem);
  box-shadow: var(--shadow-lg);
}
.form-card h3 { margin-bottom: .4rem; }
.form-card > p { font-size: .93rem; color: var(--ink-500); margin-bottom: 1.6rem; }
.field { margin-bottom: 1.15rem; }
.field label {
  display: block; font-size: .84rem; font-weight: 600; color: var(--navy-800); margin-bottom: .42rem;
}
.field label .req { color: var(--orange-500); }
.field input, .field textarea, .field select {
  width: 100%; font-family: var(--font-sans); font-size: .95rem; color: var(--ink-900);
  padding: .8rem .95rem; border: 1px solid var(--ink-200); border-radius: var(--radius-sm);
  background: var(--ink-050); transition: border-color .2s, background .2s, box-shadow .2s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--navy-600); background: #fff;
  box-shadow: 0 0 0 3px rgba(15,69,155,.12);
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-400); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.15rem; }
.form-note { font-size: .8rem; color: var(--ink-400); margin-top: .9rem; }

/* Harita */
.map { margin-top: clamp(2.5rem, 5vw, 4rem); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--ink-200); }
.map iframe { width: 100%; height: 420px; border: 0; display: block; filter: grayscale(.25); }

/* ==========================================================================
   12b. ÜRÜN / KATEGORİ SAYFALARI
   ========================================================================== */
/* Ana sayfadaki kategori kısayolları */
.kategori-linkler {
  display: flex; flex-wrap: wrap; gap: .7rem; justify-content: center; margin-top: 1.4rem;
}

/* Ekmek kırıntısı */
.kirinti {
  margin-top: calc(var(--header-h) + 38px);
  background: var(--ink-050); border-bottom: 1px solid var(--ink-200);
  font-size: .85rem;
}
.kirinti ol {
  list-style: none; display: flex; flex-wrap: wrap; align-items: center; gap: .5rem;
  margin: 0; padding: .85rem 0;
}
.kirinti li { display: flex; align-items: center; gap: .5rem; color: var(--ink-400); }
.kirinti li + li::before {
  content: ''; width: 6px; height: 6px; flex: none;
  border-right: 1.5px solid var(--ink-300); border-top: 1.5px solid var(--ink-300);
  transform: rotate(45deg);
}
.kirinti a { color: var(--ink-500); }
.kirinti a:hover { color: var(--navy-600); }
.kirinti li[aria-current] { color: var(--navy-800); font-weight: 600; }

/* Ürün üst bloğu */
.urun-ust { padding-top: clamp(2.5rem, 5vw, 4rem); }
.urun-grid {
  display: grid; grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 4.5vw, 4rem); align-items: center;
}
.urun-gorsel img {
  width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg);
  aspect-ratio: 3/2; object-fit: cover;
}

/* Ürün görsel slider'ı — her ürün yalnızca kendi görsellerini gösterir */
.slider { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); background: var(--ink-100); }
.slider__viewport { overflow: hidden; }
.slider__track { display: flex; transition: transform .45s var(--ease); will-change: transform; }
.slider__slide { min-width: 100%; margin: 0; cursor: zoom-in; }
.urun-gorsel .slider img, .slider__slide img {
  display: block; width: 100%; aspect-ratio: 3/2; object-fit: cover;
  border-radius: 0; box-shadow: none;
}
.slider__nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 42px; height: 42px; border: 0; border-radius: 50%;
  background: rgba(11,42,74,.55); color: #fff; cursor: pointer;
  display: grid; place-items: center; opacity: 0;
  transition: background .2s var(--ease), opacity .2s var(--ease);
}
.slider:hover .slider__nav, .slider__nav:focus-visible { opacity: 1; }
.slider__nav:hover { background: rgba(11,42,74,.85); }
.slider__nav svg { width: 22px; height: 22px; }
.slider__nav--prev { left: 12px; }
.slider__nav--next { right: 12px; }
.slider__dots { position: absolute; left: 0; right: 0; bottom: 12px; display: flex; gap: 7px; justify-content: center; }
.slider__dot {
  width: 9px; height: 9px; border-radius: 50%; border: 0; padding: 0; cursor: pointer;
  background: rgba(255,255,255,.5); transition: background .2s, transform .2s;
}
.slider__dot.is-active { background: #fff; transform: scale(1.3); }
@media (prefers-reduced-motion: reduce) { .slider__track { transition: none; } }
@media (hover: none) { .slider__nav { opacity: 1; width: 38px; height: 38px; } }

/* Kart içi slider (ana sayfa + kategori kartları) */
.card__media .slider { position: absolute; inset: 0; border-radius: 0; box-shadow: none; }
.card__media .slider__viewport, .card__media .slider__track, .slider--card .slider__slide { height: 100%; }
.slider--card .slider__slide { cursor: default; }
.slider--card .slider__slide img { aspect-ratio: auto; height: 100%; }
.slider--card .slider__nav { width: 32px; height: 32px; }
.slider--card .slider__nav svg { width: 17px; height: 17px; }
.slider--card .slider__dots { bottom: 10px; gap: 5px; }
.slider--card .slider__dot { width: 7px; height: 7px; }
.urun-bilgi h1 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); margin-bottom: .8rem; }
.urun-ozet { font-size: 1.08rem; color: var(--ink-500); margin-bottom: 1.6rem; }

.urun-std {
  background: var(--ink-050); border-left: 3px solid var(--navy-600);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: .95rem 1.1rem; margin-bottom: 1.8rem; font-size: .88rem; color: var(--ink-500);
}
.urun-std strong {
  display: block; color: var(--navy-800); font-size: .78rem;
  text-transform: uppercase; letter-spacing: .1em; margin-bottom: .35rem;
}
.urun-std span { display: block; }

.urun-cta { display: flex; flex-wrap: wrap; gap: .8rem; }

/* Ürün detay (koyu bölüm) */
.urun-detay h2 { color: #fff; margin-bottom: 1.6rem; }
.urun-detay h3 {
  color: #fff; font-size: 1.2rem; margin: 2.2rem 0 .8rem;
  padding-bottom: .6rem; border-bottom: 1px solid rgba(255,255,255,.15);
}
.urun-detay > p { color: rgba(255,255,255,.8); }
.urun-detay .notice { background: rgba(242,101,34,.12); border-color: rgba(242,101,34,.4); color: #ffd9c4; }
.urun-detay .notice strong { color: var(--orange-400); }
.urun-detay .docs a {
  background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.16); color: rgba(255,255,255,.88);
}
.urun-detay .docs a:hover { background: rgba(255,255,255,.12); border-color: var(--orange-400); color: #fff; }
.urun-detay .doc-missing {
  background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.2); color: rgba(255,255,255,.55);
}

.codes--dark { list-style: none; padding: 0; margin: 0; display: grid; gap: .45rem; }
.codes--dark li {
  background: rgba(255,255,255,.06); border-left: 3px solid var(--orange-500);
  border-radius: 0 4px 4px 0; padding: .6rem .8rem;
  font-size: .9rem; color: rgba(255,255,255,.8);
}
.codes--dark strong {
  color: #fff; font-family: var(--font-head); font-size: 1.05rem; letter-spacing: .03em;
  margin-right: .4rem;
}

.benefits--dark li { color: rgba(255,255,255,.84); }
.benefits--dark svg { color: #4ade80; }

/* Ürün sayfası uygulama galerisi — tıklanınca lightbox açılır */
.galeri { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.galeri__kare { margin: 0; }
.galeri__img {
  border-radius: var(--radius); overflow: hidden; cursor: zoom-in;
  aspect-ratio: 4/3; background: var(--ink-100);
  border: 1px solid var(--ink-200); transition: box-shadow .3s var(--ease), transform .3s var(--ease);
}
.galeri__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.galeri__img:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.galeri__img:hover img { transform: scale(1.06); }

.urun-alt-cta {
  margin-top: 2.8rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,.15);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.2rem;
}
.urun-alt-cta p { color: rgba(255,255,255,.8); margin: 0; }

/* Kategori sayfasındaki kart başlığı link olur */
.card h3 a { color: inherit; }
.card h3 a:hover { color: var(--orange-500); }
.card__std span { display: block; }

@media (max-width: 900px) {
  .kirinti { margin-top: calc(var(--header-h) + 38px); }
  .urun-grid { grid-template-columns: 1fr; }
  .urun-alt-cta { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 620px) {
  .kirinti { margin-top: var(--header-h); }
  .urun-cta .btn { width: 100%; }
}

/* ==========================================================================
   13. FOOTER
   ========================================================================== */
.footer { background: var(--navy-900); color: rgba(255,255,255,.62); padding-top: clamp(3rem, 6vw, 4.5rem); font-size: .92rem; }
.footer__grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 2.5rem;
  padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,.1);
}
/* Logo dosyasının zemini opak beyaz — gerçekte saydam değil. Eskiden
   uygulanan "brightness(0) invert(1)" siluet filtresi bu yüzden logoyu
   değil, tüm dikdörtgeni beyaza boyuyordu (footer'da boş beyaz kutu).
   Logoyu kendi renkleriyle beyaz bir rozetin içinde gösteriyoruz;
   lacivert "plan" yazısı koyu zeminde böyle okunur kalıyor.            */
.footer__brand img {
  display: block; box-sizing: content-box;
  height: 44px; width: auto;
  background: #fff; padding: .5rem .7rem; border-radius: var(--radius-sm);
  margin-bottom: 1.1rem;
}
.footer__brand p { font-size: .89rem; line-height: 1.65; max-width: 320px; }
.footer h5 {
  font-family: var(--font-head); font-size: 1.05rem; color: #fff; text-transform: uppercase;
  letter-spacing: .08em; margin: 0 0 1.1rem;
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: .6rem; }
.footer a { color: rgba(255,255,255,.62); transition: color .2s, padding-left .2s; }
.footer a:hover { color: var(--orange-400); }
.footer__links a:hover { padding-left: 4px; }
.footer__contact li { display: flex; gap: .6rem; align-items: flex-start; line-height: 1.55; }
.footer__contact svg { width: 16px; height: 16px; color: var(--orange-400); flex: none; margin-top: .22rem; }

.footer__bottom {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center;
  padding-block: 1.5rem; font-size: .84rem; color: rgba(255,255,255,.45);
}

/* Yukarı çık */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--orange-500); color: #fff; display: grid; place-items: center;
  box-shadow: 0 6px 18px rgba(242,101,34,.4);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all .3s var(--ease);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--orange-600); transform: translateY(-3px); }
.to-top svg { width: 20px; height: 20px; }

/* ==========================================================================
   14. Animasyon (reveal on scroll)
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ==========================================================================
   15. RESPONSIVE
   ========================================================================== */
@media (max-width: 1080px) {
  .certs, .refs, .values, .usage, .galeri { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  :root { --header-h: 66px; }
  /* Başlık mobilde 66px; logo masaüstündeki 54px'te kalırsa nefes payı bitiyor */
  .brand img { height: 42px; }
  .burger { display: grid; }
  .topbar__inner { justify-content: center; gap: 1.1rem; }

  /* mobil menü paneli */
  .nav {
    position: fixed; inset: calc(var(--header-h) + 38px) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--ink-200);
    padding: .6rem var(--gutter) 1.3rem;
    box-shadow: var(--shadow);
    transform: translateY(-12px); opacity: 0; visibility: hidden; pointer-events: none;
    transition: all .28s var(--ease);
    max-height: calc(100vh - var(--header-h) - 38px); overflow-y: auto;
  }
  .nav.is-open { transform: none; opacity: 1; visibility: visible; pointer-events: auto; }
  .nav a { padding: .95rem .3rem; border-bottom: 1px solid var(--ink-100); border-radius: 0; font-size: 1rem; }
  .nav a::after { display: none; }

  .about-grid, .tech-grid, .contact-grid { grid-template-columns: 1fr; }
  .about__media { order: -1; }
  .badge-exp { left: 12px; bottom: -18px; }
  .hero__stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(odd) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.12); }
}

@media (max-width: 620px) {
  .products { grid-template-columns: 1fr; }
  .certs, .refs, .values, .usage, .galeri, .form-row { grid-template-columns: 1fr; }
  .hero { min-height: auto; margin-top: calc(var(--header-h) + 38px); }
  .hero__cta .btn { width: 100%; }
  .topbar { display: none; }
  .nav { inset-block-start: var(--header-h); max-height: calc(100vh - var(--header-h)); }
  .hero { margin-top: var(--header-h); }
  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .map iframe { height: 320px; }
  .badge-exp { position: static; margin: 1rem auto 0; max-width: none; display: block; }
}

/* ---------- Baskı ---------- */
@media print {
  .header, .to-top, .lightbox, .hero__cta, .form-card, .map { display: none !important; }
  body { color: #000; }
  .section { padding-block: 1.2rem; }
  .detail__content { display: block !important; }
}

/* ---------- Hareket azaltma tercihi ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important; scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}