/* ─── Reset & Base ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --orange:  #f5a623;
  --orange-d:#d4891a;
  --dark:    #2c2c2c;
  --gray-bg: #d9d9d9;
  --white:   #ffffff;
  --text:    #333333;
  --text-lt: #555555;
  --border:  #c8c8c8;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 8px;
  --shadow: 0 2px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.18);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--white);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img  { max-width: 100%; display: block; }
a    { text-decoration: none; color: inherit; }
ul   { list-style: none; }

/* ─── Typography ────────────────────────────────────────────────────────── */
h1 { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 800; line-height: 1.1; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
h3 { font-size: 1rem; font-weight: 700; }

.section-heading-orange {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--orange);
  margin-bottom: 2.5rem;
}
.section-label-orange {
  display: block;
  font-size: .78rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--orange);
  margin-bottom: .6rem;
}

.drop-cap {
  float: left;
  font-size: 3.8rem; font-weight: 800; line-height: .8;
  margin: .05em .12em 0 0;
  color: var(--orange);
}

/* ─── Layout ────────────────────────────────────────────────────────────── */
.container  { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.section    { padding: 5rem 0; }
.section-gray { background: var(--gray-bg); }

/* ─── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .75rem 2rem; border-radius: 6px;
  font-size: .95rem; font-weight: 600; border: none; cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-primary { background: var(--orange); color: var(--dark); }
.btn-primary:hover { background: var(--orange-d); }
.btn-ghost {
  background: transparent; color: var(--white);
  border: 2px solid rgba(255,255,255,.5);
}
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: var(--white); }

/* ─── NAV ───────────────────────────────────────────────────────────────── */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(20,20,20,.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: box-shadow .3s;
}
#nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.5); }

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-logo { display: flex; align-items: center; gap: .6rem; }
.nav-logo img { height: 36px; width: auto; }
.nav-logo-text { font-size: 1.1rem; font-weight: 800; color: var(--white); letter-spacing: -.01em; }

.nav-links { display: flex; align-items: center; gap: .1rem; }
.nav-links li a {
  color: rgba(255,255,255,.8);
  font-size: .88rem; font-weight: 500; font-style: italic;
  padding: .3rem .9rem; transition: color .2s;
}
.nav-links li a:hover { color: var(--orange); }
.nav-sep { color: rgba(255,255,255,.3); font-size: .9rem; user-select: none; }
.nav-links li:last-child a { font-weight: 700; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; }

/* ─── HERO ──────────────────────────────────────────────────────────────── */
#hero {
  min-height: 100vh; position: relative;
  display: flex; align-items: flex-end;
  padding-top: 64px; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(to bottom, rgba(0,0,0,.45) 0%, rgba(0,0,0,.35) 100%),
    url('images/hero-bg.jpg') center/cover no-repeat;
  background-color: #1a2a3a;
}
.hero-inner { position: relative; z-index: 1; padding-bottom: 6rem; max-width: 680px; }
.hero-logo { margin-bottom: 1.5rem; }
.hero-logo img { width: 90px; height: auto; filter: drop-shadow(0 4px 12px rgba(0,0,0,.5)); }
.hero-title {
  color: var(--orange); font-style: italic; font-weight: 800;
  margin-bottom: .6rem; text-shadow: 0 2px 12px rgba(0,0,0,.4);
}
.hero-tagline {
  font-size: 1.5rem; font-weight: 500; color: var(--white);
  text-shadow: 0 1px 8px rgba(0,0,0,.5); margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ─── VIDEO ─────────────────────────────────────────────────────────────── */
#video h2 { margin-bottom: 1.75rem; }
.video-wrapper {
  position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  background: #000;
}
.video-wrapper iframe {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;
}

/* ─── PRODUCT GALLERY ───────────────────────────────────────────────────── */
.product-gallery {
  display: flex;
  flex-direction: column;
  gap: 5px;
  border-radius: var(--radius); overflow: hidden;
}

/* Ana fotoğraf: tam genişlik, 16:9 */
.gallery-item-main {
  width: 100%;
  aspect-ratio: 16 / 9;
}

/* Thumbnail sırası */
.gallery-thumbs {
  display: grid;
  gap: 5px;
}
.gallery-thumbs-1 { grid-template-columns: 1fr; }
.gallery-thumbs-2 { grid-template-columns: 1fr 1fr; }
.gallery-thumbs-3 { grid-template-columns: 1fr 1fr 1fr; }

.gallery-thumbs .gallery-item {
  aspect-ratio: 16 / 9;
}

.gallery-item {
  position: relative; overflow: hidden; cursor: pointer;
}
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .35s;
  display: block;
}
.gallery-item:hover img { transform: scale(1.07); }

.gallery-more {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.55);
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 1.6rem; font-weight: 800;
  letter-spacing: -.02em;
  transition: background .2s;
}
.gallery-item:hover .gallery-more { background: rgba(0,0,0,.65); }

/* ─── LIGHTBOX ──────────────────────────────────────────────────────────── */
.lightbox {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(0,0,0,.92);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity .25s;
}
.lightbox.open { opacity: 1; pointer-events: all; }

.lb-content {
  max-width: 90vw; max-height: 85vh;
  display: flex; align-items: center; justify-content: center;
}
.lb-img {
  max-width: 90vw; max-height: 82vh;
  object-fit: contain; border-radius: 4px;
  box-shadow: 0 8px 48px rgba(0,0,0,.6);
  user-select: none;
}

.lb-close, .lb-prev, .lb-next {
  position: absolute; background: rgba(255,255,255,.12); border: none;
  color: var(--white); cursor: pointer; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s, transform .15s;
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: rgba(255,255,255,.25); }

.lb-close {
  top: 1.25rem; right: 1.5rem;
  width: 44px; height: 44px; font-size: 1.6rem; line-height: 1;
}
.lb-prev, .lb-next {
  top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; font-size: 2rem; line-height: 1;
}
.lb-prev { left: 1.5rem; }
.lb-next { right: 1.5rem; }
.lb-prev:hover { transform: translateY(-50%) translateX(-2px); }
.lb-next:hover { transform: translateY(-50%) translateX(2px); }

.lb-counter {
  position: absolute; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.6); font-size: .85rem; font-weight: 500;
  background: rgba(0,0,0,.4); padding: .3rem .9rem; border-radius: 100px;
}

/* ─── GENERAL GALLERY ───────────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 8px;
}
.gallery-grid .gallery-item {
  aspect-ratio: 4/3;
  border-radius: 6px;
  overflow: hidden;
}
.gallery-grid .gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .35s;
  display: block;
}
.gallery-grid .gallery-item:hover img { transform: scale(1.06); }

/* ─── ABOUT ─────────────────────────────────────────────────────────────── */
.about-inner {
  display: grid; grid-template-columns: 200px 1fr; gap: 3.5rem; align-items: start;
}
.about-logo img {
  width: 160px; height: auto; margin: 0 auto;
  filter: drop-shadow(0 4px 16px rgba(0,0,0,.15));
}
.about-content { overflow: hidden; }
.about-text {
  font-size: .95rem; color: var(--text-lt); line-height: 1.75; margin-bottom: 1.75rem; overflow: hidden;
}
.about-photos {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem;
  border-radius: var(--radius); overflow: hidden;
}
.about-photos img { width: 100%; height: 160px; object-fit: cover; transition: transform .3s; }
.about-photos img:hover { transform: scale(1.05); }

/* ─── CONTACT ───────────────────────────────────────────────────────────── */
.contact-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: stretch;
}

/* Sol: harita tam yüksekliği doldurur */
.contact-left {
  display: flex; flex-direction: column;
  min-height: 480px;
}
.contact-map {
  flex: 1; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow);
}
.contact-map iframe { display: block; width: 100%; height: 100%; min-height: 480px; }

.contact-email { font-size: 1.8rem; font-weight: 800; margin-bottom: .75rem; }
.contact-email a { color: var(--orange); transition: color .2s; }
.contact-email a:hover { color: var(--orange-d); }

.contact-address { font-style: normal; font-size: .9rem; color: var(--text-lt); margin-bottom: 2rem; }

.contact-form { display: flex; flex-direction: column; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .35rem; margin-bottom: .9rem; }
.form-group label { font-size: .82rem; font-weight: 600; color: var(--text-lt); }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: 6px; padding: .65rem .9rem;
  color: var(--dark); font-family: var(--font); font-size: .92rem; outline: none;
  transition: border-color .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--orange); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: #aaa; }
.form-group textarea { resize: vertical; min-height: 100px; }
.contact-form .btn { margin-top: .25rem; }

/* ─── FOOTER ────────────────────────────────────────────────────────────── */
footer { background: #1a1a1a; border-top: 1px solid rgba(255,255,255,.06); padding: 2.5rem 0 1.5rem; }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
.footer-brand { display: flex; flex-direction: column; align-items: center; gap: .6rem; }
.footer-brand img { height: 48px; width: auto; }
.footer-brand span { color: rgba(255,255,255,.5); font-size: .88rem; font-style: italic; }
.footer-nav { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: center; }
.footer-nav a { color: rgba(255,255,255,.45); font-size: .82rem; font-style: italic; transition: color .2s; }
.footer-nav a:hover { color: var(--orange); }
.footer-copy {
  color: rgba(255,255,255,.25); font-size: .78rem;
  border-top: 1px solid rgba(255,255,255,.07);
  padding-top: 1.25rem; width: 100%; text-align: center;
}

/* ─── TOAST ─────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 9999;
  background: #16a34a; color: white; padding: .9rem 1.5rem;
  border-radius: 8px; font-weight: 600; font-size: .9rem;
  box-shadow: var(--shadow-lg);
  transform: translateY(80px); opacity: 0;
  transition: .3s cubic-bezier(.34,1.56,.64,1);
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ─── NAV DROPDOWN ──────────────────────────────────────────────────────── */
.nav-dropdown { position: relative; }
.nav-dropdown-trigger { cursor: pointer; }
.nav-dropdown-menu {
  display: none; position: absolute; top: 100%; left: 50%;
  transform: translateX(-50%);
  background: #1a1a1a; min-width: 180px;
  border-radius: 8px; padding: .6rem 0 .4rem;
  box-shadow: 0 8px 32px rgba(0,0,0,.45);
  border: 1px solid rgba(255,255,255,.08);
  z-index: 200; list-style: none;
}
/* Invisible bridge — prevents hover gap from closing the menu */
.nav-dropdown::after {
  content: ''; position: absolute;
  top: 100%; left: 0; right: 0; height: 6px;
  background: transparent;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu { display: block; }
.nav-dropdown-menu li a {
  display: block; padding: .55rem 1.2rem;
  color: rgba(255,255,255,.75); font-size: .85rem; font-weight: 500;
  transition: color .15s, background .15s;
}
.nav-dropdown-menu li a:hover { color: var(--orange); background: rgba(255,255,255,.05); }

/* ─── HERO ADDITIONS ────────────────────────────────────────────────────── */
.hero-subtitle {
  font-size: 1.05rem; color: rgba(255,255,255,.9);
  line-height: 1.7; max-width: 560px; margin-bottom: .75rem;
  text-shadow: 0 1px 6px rgba(0,0,0,.4);
}
.hero-subtitle strong { color: var(--orange); }
.hero-subtitle em { font-style: italic; opacity: .85; }
.btn-ghost-dark {
  background: transparent; color: var(--dark);
  border: 2px solid rgba(44,44,44,.35);
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .75rem 2rem; border-radius: 6px;
  font-size: .95rem; font-weight: 600;
  transition: background .15s, border-color .15s;
}
.btn-ghost-dark:hover { background: rgba(0,0,0,.07); border-color: var(--dark); }

/* ─── SECTION INTRO ─────────────────────────────────────────────────────── */
.section-intro {
  font-size: .98rem; color: var(--text-lt);
  max-width: 680px; margin-bottom: 2.5rem; line-height: 1.7;
}

/* ─── PRODUCT CARDS (landing) ───────────────────────────────────────────── */
.product-cards-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
}
.product-card-item {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  display: grid; grid-template-columns: 1fr 1fr;
  transition: box-shadow .2s, transform .2s; min-height: 260px;
}
.product-card-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }

/* Fotoğraf / illustration alanı (sol) */
.pci-media {
  position: relative; overflow: hidden; background: var(--dark);
  display: flex; align-items: center; justify-content: center;
}
.pci-media img.pci-photo-img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s;
}
.pci-media:hover img.pci-photo-img { transform: scale(1.05); }
.pci-media.pci-illus-only {
  background: var(--gray-bg);
}
.pci-media.pci-illus-only img {
  max-height: 120px; max-width: 80%; object-fit: contain;
}
.pci-media-illus-badge {
  position: absolute; bottom: 8px; right: 8px;
  width: 48px; height: 48px;
  background: rgba(0,0,0,.6); border-radius: 6px;
  display: flex; align-items: center; justify-content: center; padding: 6px;
}
.pci-media-illus-badge img { width: 100%; height: 100%; object-fit: contain; opacity: .85; }

/* Sağ: bilgi alanı */
.pci-body {
  padding: 1.5rem 1.25rem; display: flex; flex-direction: column; justify-content: space-between;
}
.pci-body h3 {
  font-size: 1rem; font-weight: 800; font-style: italic; color: var(--dark);
  margin-bottom: .6rem; line-height: 1.3;
}
.pci-swl {
  display: inline-block; background: var(--orange); color: var(--dark);
  font-size: .78rem; font-weight: 700; padding: .2rem .75rem;
  border-radius: 20px; margin-bottom: .85rem;
}
.pci-models {
  display: flex; flex-wrap: wrap; gap: .3rem; margin-bottom: .85rem;
}
.pci-model-tag {
  background: var(--gray-bg); border: 1px solid var(--border);
  border-radius: 4px; font-size: .72rem; font-weight: 600;
  color: var(--dark); padding: .18rem .5rem;
}
.pci-body p { font-size: .8rem; color: var(--text-lt); line-height: 1.6; margin-bottom: .85rem; flex: 1; }
.pci-btn { font-size: .8rem; padding: .5rem 1rem; align-self: flex-start; }

/* ─── DIFFERENTIATORS ───────────────────────────────────────────────────── */
.diff-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.diff-item { display: flex; flex-direction: column; }
.diff-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--orange); display: flex; align-items: center;
  justify-content: center; margin-bottom: 1rem; flex-shrink: 0;
}
.diff-icon svg { width: 22px; height: 22px; stroke: var(--dark); }
.diff-item h3 { font-size: .97rem; font-weight: 700; color: var(--dark); margin-bottom: .5rem; }
.diff-item p { font-size: .87rem; color: var(--text-lt); line-height: 1.65; }

/* ─── ACTUATION GRID ────────────────────────────────────────────────────── */
.actuation-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.actuation-card {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem;
}
.actuation-highlight { border-color: var(--orange); background: #fffbf2; }
.actuation-num {
  font-size: 1.8rem; font-weight: 900; color: var(--orange);
  line-height: 1; margin-bottom: .75rem; font-style: italic;
}
.actuation-card h3 { font-size: .97rem; font-weight: 700; color: var(--dark); margin-bottom: .5rem; display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.actuation-card p { font-size: .85rem; color: var(--text-lt); line-height: 1.65; }
.actuation-badge {
  font-size: .72rem; font-weight: 700; background: var(--orange);
  color: var(--dark); padding: 2px 7px; border-radius: 20px;
  text-transform: uppercase; letter-spacing: .05em;
}

/* ─── APPLICATIONS TEASER ───────────────────────────────────────────────── */
.apps-teaser-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
}
.app-teaser-item {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem 1rem;
  display: flex; flex-direction: column; align-items: center;
  gap: .75rem; text-align: center; font-size: .88rem;
  font-weight: 600; color: var(--dark);
  transition: border-color .2s, color .2s;
}
.app-teaser-item:hover { border-color: var(--orange); color: var(--orange); }
.app-teaser-svg { width: 28px; height: 28px; stroke: var(--orange); flex-shrink: 0; }

/* ─── DOCUMENTS PAGE ────────────────────────────────────────────────────── */
.doc-catalog-row { margin-top: 1rem; }
.doc-btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .55rem 1.1rem; background: var(--orange); color: var(--dark);
  border-radius: 6px; font-size: .85rem; font-weight: 700;
  transition: background .2s, transform .15s;
}
.doc-btn:hover { background: var(--orange-d); transform: translateY(-1px); }
.doc-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.doc-btn-soon {
  background: transparent; color: var(--text-lt);
  border: 1.5px dashed var(--border); font-weight: 600; cursor: default;
}
.doc-btn-soon:hover { background: transparent; transform: none; }
.doc-table td { vertical-align: middle; }
.doc-table td:first-child { font-weight: 700; color: var(--dark); }

/* ─── ARTICLE CARDS (resources) ─────────────────────────────────────────── */
.article-cards-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.75rem;
}
.article-card {
  display: block; background: var(--white);
  border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: 1.75rem; transition: box-shadow .2s, transform .2s;
}
.article-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.article-card-meta { display: flex; gap: .75rem; align-items: center; margin-bottom: .85rem; flex-wrap: wrap; }
.article-card-cat {
  background: var(--orange); color: var(--dark);
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em;
  padding: .2rem .6rem; border-radius: 4px;
}
.article-card-date { font-size: .78rem; color: var(--text-lt); }
.article-card h3 { font-size: 1.1rem; font-weight: 800; color: var(--dark); line-height: 1.35; margin-bottom: .6rem; }
.article-card p { font-size: .87rem; color: var(--text-lt); line-height: 1.6; margin-bottom: 1rem; }
.article-card-link { font-size: .85rem; font-weight: 700; color: var(--orange); }

/* ─── ARTICLE PAGE (blog post) ──────────────────────────────────────────── */
.article-page { padding: 3rem 0; margin-top: 64px; }
.article-container { max-width: 760px; }
.article-header { margin-bottom: 2.5rem; }
.article-header h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 800;
  color: var(--dark); line-height: 1.2; margin: 1rem 0;
}
.article-lead { font-size: 1.1rem; color: var(--text-lt); line-height: 1.7; }
.article-body { font-size: 1rem; color: var(--text); line-height: 1.8; }
.article-body h2 {
  font-size: 1.45rem; font-weight: 800; color: var(--dark);
  margin: 2.5rem 0 1rem; padding-top: 1rem; border-top: 2px solid var(--gray-bg);
}
.article-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--dark); margin: 1.75rem 0 .6rem; }
.article-body p { margin-bottom: 1.1rem; }
.article-body a { color: var(--orange-d); text-decoration: underline; font-weight: 600; }
.article-list { margin: 1rem 0 1.5rem 0; list-style: none; }
.article-list li {
  position: relative; padding-left: 1.5rem; margin-bottom: .85rem;
  font-size: .97rem; line-height: 1.7;
}
.article-list li::before {
  content: ''; position: absolute; left: 0; top: .55rem;
  width: 8px; height: 8px; border-radius: 50%; background: var(--orange);
}
.article-cta {
  margin-top: 3rem; padding: 2rem; background: var(--gray-bg);
  border-radius: var(--radius); border-left: 4px solid var(--orange);
}
.article-cta h3 { font-size: 1.2rem; font-weight: 800; color: var(--dark); margin-bottom: .5rem; }
.article-cta p { font-size: .92rem; color: var(--text-lt); margin-bottom: 1.25rem; }

/* ─── APPLICATION CARDS (overview) ──────────────────────────────────────── */
.app-cards-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.app-card {
  display: block; background: var(--white);
  border: 1.5px solid var(--border); border-left: 4px solid var(--orange);
  border-radius: var(--radius); padding: 1.75rem;
  transition: box-shadow .2s, transform .2s;
}
.app-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.app-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: .6rem; }
.app-card p { font-size: .87rem; color: var(--text-lt); line-height: 1.6; margin-bottom: 1rem; }
.app-card-link { font-size: .85rem; font-weight: 700; color: var(--orange); }

/* ─── APPLICATION — related article box ────────────────────────────────── */
.app-article-link {
  display: block; background: var(--white);
  border: 1.5px solid var(--border); border-left: 4px solid var(--orange);
  border-radius: var(--radius); padding: 1.75rem; max-width: 760px;
  transition: box-shadow .2s, transform .2s;
}
.app-article-link:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.app-article-tag {
  display: inline-block; background: var(--orange); color: var(--dark);
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em;
  padding: .2rem .6rem; border-radius: 4px; margin-bottom: .75rem;
}
.app-article-title { display: block; font-size: 1.1rem; font-weight: 800; color: var(--dark); line-height: 1.35; margin-bottom: .5rem; }
.app-article-excerpt { display: block; font-size: .9rem; color: var(--text-lt); line-height: 1.6; margin-bottom: .85rem; }
.app-article-cta { display: inline-block; font-size: .85rem; font-weight: 700; color: var(--orange); }

/* ─── APPLICATION — type chips (alt-tip listesi) ───────────────────────── */
.types-grid {
  display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.5rem;
}
.type-chip {
  display: inline-block; background: var(--white);
  border: 1.5px solid var(--border); border-radius: 6px;
  padding: .45rem .85rem; font-size: .85rem; font-weight: 500; color: var(--dark);
  transition: border-color .15s, color .15s;
}
.type-chip:hover { border-color: var(--orange); color: var(--orange-d); }

/* ─── APPLICATION DETAIL — problem/solution ─────────────────────────────── */
.app-ps-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.app-ps-card { border-radius: var(--radius); padding: 2rem; }
.app-ps-problem { background: var(--gray-bg); }
.app-ps-solution { background: #fffbf2; border: 1.5px solid var(--orange); }
.app-ps-card h2 { font-size: 1.15rem; margin-bottom: 1rem; }
.app-ps-problem h2 { color: var(--dark); }
.app-ps-solution h2 { color: var(--orange-d); }
.app-ps-card p { font-size: .92rem; color: var(--text-lt); line-height: 1.75; }

/* ─── BREADCRUMB ────────────────────────────────────────────────────────── */
.breadcrumb-nav {
  background: var(--white); border-bottom: 1px solid var(--border);
  padding: .6rem 0; margin-top: 64px;
}
.breadcrumb {
  list-style: none; display: flex; align-items: center; gap: .5rem;
  font-size: .82rem; color: var(--text-lt);
}
.breadcrumb li + li::before { content: '›'; margin-right: .5rem; }
.breadcrumb a { color: var(--text-lt); }
.breadcrumb a:hover { color: var(--orange); }
.breadcrumb li:last-child { color: var(--dark); font-weight: 600; }

/* ─── PRODUCT PAGE — hero (illus | info) ───────────────────────────────── */
.product-page-hero { padding: 3.5rem 0; background: var(--gray-bg); }
.product-page-hero-inner {
  display: grid; grid-template-columns: 1fr 1.3fr;
  gap: 3.5rem; align-items: center;
}
.product-page-illus {
  display: flex; align-items: center; justify-content: center;
  padding: 1rem; min-height: 280px;
}
.product-page-illus img {
  max-height: 260px; width: auto; object-fit: contain;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,.12));
}
.product-page-intro h1 {
  font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; font-style: italic;
  color: var(--dark); margin-bottom: .85rem;
}
.product-page-tagline { font-size: .95rem; color: var(--text-lt); line-height: 1.7; margin-bottom: 1.1rem; }
.product-swl-highlight {
  display: inline-block; background: var(--dark); color: var(--white);
  font-size: .9rem; font-weight: 600; padding: .4rem 1rem;
  border-radius: 6px; margin-bottom: 1rem;
}
.product-swl-highlight strong { color: var(--orange); }
.product-page-models-tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.5rem; }
.product-page-models-tags .pci-model-tag { font-size: .78rem; padding: .25rem .65rem; }

/* Galeri bölümü (ayrı, tam genişlik) */
.product-gallery-section { padding: 3rem 0; }
.product-gallery-section h2 { font-size: 1.3rem; margin-bottom: 1.5rem; }

/* Spec table */
.product-page-specs {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: start;
}
.product-page-specs h2 { font-size: 1.25rem; margin-bottom: 1rem; }
.spec-page-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.spec-page-table th { background: var(--dark); color: var(--white); padding: .55rem .75rem; text-align: left; font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.spec-page-table td { padding: .55rem .75rem; border-bottom: 1px solid var(--border); color: var(--text); vertical-align: top; }
.spec-page-table td:first-child { font-weight: 600; color: var(--dark); white-space: nowrap; width: 45%; }
.spec-page-table tr:last-child td { border-bottom: none; }
.spec-page-table tr:nth-child(even) td { background: rgba(0,0,0,.02); }

/* Applications list */
.apps-list-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: .75rem;
}
.apps-list-item {
  display: flex; align-items: center; gap: .6rem;
  font-size: .9rem; color: var(--text); font-weight: 500;
}
.apps-list-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--orange); flex-shrink: 0;
}

/* CTA section */
.product-cta-section { background: var(--dark); }
.product-cta-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}
.product-cta-inner h2 { color: var(--white); font-size: 1.5rem; margin-bottom: .4rem; }
.product-cta-inner p { color: rgba(255,255,255,.6); font-size: .9rem; }

/* ─── RESPONSIVE ────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .contact-inner { grid-template-columns: 1fr; }
  .contact-left { min-height: 320px; }
  .contact-map iframe { min-height: 320px; }
  .product-cards-grid { grid-template-columns: 1fr; }
  .product-card-item { grid-template-columns: 200px 1fr; }
  .diff-grid { grid-template-columns: 1fr 1fr; }
  .actuation-grid { grid-template-columns: 1fr 1fr; }
  .app-cards-grid { grid-template-columns: 1fr 1fr; }
  .apps-teaser-grid { grid-template-columns: repeat(4, 1fr); }
  .product-page-hero-inner { grid-template-columns: 1fr 1.4fr; gap: 2rem; }
  .product-page-specs { grid-template-columns: 1fr; }
  .product-cta-inner { flex-direction: column; text-align: center; }
}
@media (max-width: 768px) {
  .about-inner { grid-template-columns: 1fr; }
  .about-logo { text-align: center; }
  .about-photos { grid-template-columns: 1fr 1fr; }
  .product-cards-grid { grid-template-columns: 1fr; }
  .product-card-item { grid-template-columns: 1fr; min-height: auto; }
  .pci-media { height: 200px; }
  .app-cards-grid { grid-template-columns: 1fr; }
  .app-ps-grid { grid-template-columns: 1fr; }
  .article-cards-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .apps-teaser-grid { grid-template-columns: repeat(2, 1fr); }
  .product-page-hero-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .product-page-illus { min-height: 200px; padding: 1.5rem; }
  .product-page-illus img { max-height: 160px; }
  .apps-list-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 64px; left: 0; right: 0;
    background: rgba(20,20,20,.97); padding: 1rem 2rem;
    border-bottom: 1px solid rgba(255,255,255,.08); gap: 0;
  }
  .nav-links.open .nav-sep { display: none; }
  /* Mobilde dropdown: tıklayınca açılır, CSS hover çalışmaz */
  .nav-dropdown::after { display: none; }
  .nav-dropdown:hover .nav-dropdown-menu { display: none; }
  .nav-links.open .nav-dropdown-menu { display: none; }
  .nav-links.open .nav-dropdown.mobile-open .nav-dropdown-menu {
    display: block; position: static; transform: none;
    background: rgba(255,255,255,.05); border: none;
    border-radius: 0; padding: 0; box-shadow: none;
    margin-left: 1rem;
  }
  .nav-links.open .nav-dropdown.mobile-open .nav-dropdown-menu li a {
    padding: .5rem 0; font-size: .9rem;
  }
  .nav-links.open li a { display: block; padding: .65rem 0; font-size: 1rem; }
  .nav-toggle { display: flex; }
}
@media (max-width: 500px) {
  .section { padding: 3.5rem 0; }
  .hero-actions { flex-direction: column; }
  .form-row { grid-template-columns: 1fr; }
  .lb-prev { left: .5rem; }
  .lb-next { right: .5rem; }
  .actuation-grid { grid-template-columns: 1fr; }
  .apps-teaser-grid { grid-template-columns: 1fr 1fr; }
  .compare-grid { grid-template-columns: 1fr; }
  .material-grid { grid-template-columns: 1fr; }
}

/* ─── FAQ PREVIEW (landing page) ───────────────────────────────────────── */
.faq-preview-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem;
}
.faq-preview-item {
  background: var(--white); border: 1.5px solid var(--border);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius); padding: 1.5rem;
}
.faq-preview-item h3 {
  font-size: .97rem; font-weight: 700; color: var(--dark);
  margin-bottom: .6rem;
}
.faq-preview-item p { font-size: .87rem; color: var(--text-lt); line-height: 1.65; }
@media (max-width: 768px) { .faq-preview-grid { grid-template-columns: 1fr; } }

/* ─── PAGE HERO (how-it-works, faq, etc.) ──────────────────────────────── */
.page-hero { padding: 4rem 0 3rem; margin-top: 64px; }
.page-hero-inner { max-width: 720px; }
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; color: var(--dark); margin-bottom: .75rem; }
.page-hero-sub { font-size: 1.05rem; color: var(--text-lt); line-height: 1.7; }

/* ─── HOW IT WORKS ──────────────────────────────────────────────────────── */
.hiw-content {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: start;
}
.hiw-text h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 1rem; }
.hiw-text p { font-size: .95rem; color: var(--text-lt); line-height: 1.75; margin-bottom: 1rem; }
.hiw-highlight-box {
  background: var(--dark); border-radius: var(--radius);
  padding: 1.75rem; color: var(--white);
}
.hiw-highlight-title { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; color: var(--orange); margin-bottom: .75rem; }
.hiw-highlight-box p { font-size: .93rem; color: rgba(255,255,255,.8); line-height: 1.7; }
.hiw-highlight-box strong { color: var(--orange); }

.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.compare-card {
  border-radius: var(--radius); padding: 1.75rem;
  border: 2px solid var(--border);
}
.compare-card-good { border-color: var(--orange); background: #fffbf2; }
.compare-card-neutral { background: #f9f9f9; }
.compare-card-header { margin-bottom: 1.25rem; }
.compare-badge {
  display: inline-block; font-size: .78rem; font-weight: 700;
  padding: .3rem .9rem; border-radius: 20px; text-transform: uppercase; letter-spacing: .05em;
}
.compare-badge-green { background: var(--orange); color: var(--dark); }
.compare-badge-gray { background: #ddd; color: #555; }
.compare-list { list-style: none; }
.compare-list li {
  padding: .4rem 0; font-size: .88rem; color: var(--text);
  border-bottom: 1px solid rgba(0,0,0,.06);
  display: flex; align-items: flex-start; gap: .5rem;
}
.compare-list li::before { content: '→'; color: var(--orange); font-weight: 700; flex-shrink: 0; margin-top: .05rem; }

.mechanism-steps { display: flex; flex-direction: column; gap: 1.5rem; }
.mechanism-step {
  display: flex; gap: 1.25rem; align-items: flex-start;
  padding: 1.25rem; background: var(--gray-bg); border-radius: var(--radius);
}
.mechanism-step-num {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--orange); color: var(--dark);
  font-size: 1.1rem; font-weight: 900;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.mechanism-step-body h3 { font-size: .95rem; font-weight: 700; color: var(--dark); margin-bottom: .35rem; }
.mechanism-step-body p { font-size: .88rem; color: var(--text-lt); line-height: 1.65; }

.actuation-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.actuation-detail-card {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem;
}
.actuation-detail-num { font-size: 1.6rem; font-weight: 900; color: var(--orange); font-style: italic; line-height: 1; margin-bottom: .6rem; }
.actuation-detail-card h3 { font-size: .97rem; font-weight: 700; margin-bottom: .5rem; }
.actuation-detail-card p { font-size: .86rem; color: var(--text-lt); line-height: 1.65; margin-bottom: .75rem; }
.actuation-detail-use { font-size: .82rem; color: var(--text-lt); background: var(--gray-bg); border-radius: 6px; padding: .5rem .75rem; }

.material-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.material-card { background: var(--white); border: 1.5px solid var(--border); border-radius: var(--radius); padding: 1.25rem; }
.material-card h3 { font-size: .9rem; font-weight: 700; color: var(--orange); margin-bottom: .5rem; }
.material-card p { font-size: .83rem; color: var(--text-lt); line-height: 1.6; }

/* ─── FAQ PAGE ──────────────────────────────────────────────────────────── */
.faq-categories {
  display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: .5rem;
}
.faq-cat-btn {
  display: inline-block; padding: .45rem 1rem;
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: 20px; font-size: .83rem; font-weight: 600; color: var(--dark);
  transition: border-color .15s, color .15s, background .15s;
}
.faq-cat-btn:hover { border-color: var(--orange); color: var(--orange); background: #fffbf2; }

.faq-section-heading { font-size: 1.3rem; font-weight: 800; color: var(--dark); margin-bottom: 1.5rem; padding-bottom: .75rem; border-bottom: 2px solid var(--orange); display: inline-block; }

.faq-list { display: flex; flex-direction: column; gap: .75rem; }
.faq-item {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: border-color .2s;
}
.faq-item[open] { border-color: var(--orange); }
.faq-question {
  font-size: .97rem; font-weight: 700; color: var(--dark);
  padding: 1.1rem 1.25rem; cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  transition: color .15s;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after { content: '+'; color: var(--orange); font-size: 1.4rem; font-weight: 300; flex-shrink: 0; line-height: 1; }
.faq-item[open] .faq-question::after { content: '−'; }
.faq-item[open] .faq-question { color: var(--orange); }
.faq-answer {
  padding: 0 1.25rem 1.25rem;
  font-size: .9rem; color: var(--text-lt); line-height: 1.75;
}
.faq-answer p { margin-bottom: .6rem; }
.faq-answer a { color: var(--orange); text-decoration: underline; }

@media (max-width: 768px) {
  .hiw-content { grid-template-columns: 1fr; }
  .actuation-detail-grid { grid-template-columns: 1fr; }
  .material-grid { grid-template-columns: 1fr 1fr; }
}