/* ============================================================
   SOVO MEKANİK — Ortak Stil Dosyası (3 sayfada paylaşılır)
   Accent rengi: --teal (#008080)
   ============================================================ */

/* ── Değişkenler ── */
:root {
  --ink:   #3d3d3d;
  --muted: #999;
  --line:  rgba(61, 61, 61, 0.12);
  --bg:    #f7f7f7;
  --white: #ffffff;
  --teal:  #008080;
}

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

html  { scroll-behavior: smooth; }
body  { font-family: 'DM Sans', sans-serif; background: var(--bg); color: var(--ink); overflow-x: hidden; }

/* ============================================================
   NAV  (tüm sayfalar)
   ============================================================ */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding: 0 40px;
  background: rgba(247, 247, 247, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-logo img { height: 35px; display: block; }

.nav-links { display: flex; gap: 28px; list-style: none; }

.nav-links a {
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--teal); }

.nav-right { display: flex; align-items: center; gap: 12px; }

.nav-katalog {
  padding: 7px 18px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--teal);
  background: transparent;
  border: 1px solid var(--teal);
  border-radius: 100px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.nav-katalog:hover { background: var(--teal); color: var(--white); }

.nav-cta {
  padding: 8px 18px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--white);
  background: var(--teal);
  border: none;
  border-radius: 100px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.nav-cta:hover { opacity: 0.85; }

/* ── Dil Seçici ── */

.lang-switcher { position: relative; }

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  background: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.lang-btn:hover       { border-color: var(--teal); color: var(--teal); }
.lang-btn svg         { width: 10px; height: 10px; transition: transform 0.2s; }
.lang-switcher.open .lang-btn svg { transform: rotate(180deg); }

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 100px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(61, 61, 61, 0.10);
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 200;
}

.lang-switcher.open .lang-dropdown {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.lang-option {
  display: block;
  width: 100%;
  padding: 10px 16px;
  text-align: left;
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.lang-option:hover  { background: rgba(0, 128, 128, 0.06); color: var(--teal); }
.lang-option.active { color: var(--teal); font-weight: 500; }

/* ============================================================
   FOOTER  (tüm sayfalar)
   ============================================================ */

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  border-top: 1px solid var(--line);
}

.footer-logo img { height: 18px; display: block; opacity: 0.5; }

.footer-links { display: flex; gap: 24px; list-style: none; }

.footer-links a {
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--teal); }

.footer-copy { font-size: 11px; color: var(--muted); letter-spacing: 0.5px; }

/* ============================================================
   PAYLAŞILAN BÖLÜM ELEMANLARı
   ============================================================ */

section { scroll-margin-top: 60px; }

.section-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--teal);
}

.section-tag::before { content: ''; width: 16px; height: 1px; background: var(--teal); }

.section-title {
  margin-bottom: 24px;
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(36px, 4vw, 52px);
  letter-spacing: 2px;
  line-height: 1;
  color: var(--ink);
}

.section-desc {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.7;
}

.about-text {
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.8;
  color: var(--ink);
}

/* ── İletişim ortak ── */

.contact-left  { padding: 80px 40px; border-right: 1px solid var(--line); }
.contact-right { padding: 80px 40px; display: flex; flex-direction: column; gap: 32px; }

.contact-info-label {
  margin-bottom: 6px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--teal);
}

.contact-info-val { font-size: 14px; color: var(--ink); line-height: 1.7; font-weight: 300; }

.contact-info-val a {
  color: var(--ink);
  text-decoration: none;
  transition: color 0.2s;
}

.contact-info-val a:hover { color: var(--teal); }

.contact-divider { height: 1px; background: var(--line); }

.contact-map {
  width: 100%;
  height: 260px;
  border: none;
  border-radius: 4px;
  filter: grayscale(30%);
  display: block;
}

.social-links { display: flex; gap: 16px; }

.social-link {
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}

.social-link:hover { color: var(--teal); border-color: var(--teal); }

/* ── Ref kartları ortak ── */

.ref-card {
  position: relative;
  background: var(--bg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.ref-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(20%);
  transition: transform 0.5s, filter 0.5s;
}

.ref-card:hover img { transform: scale(1.04); filter: grayscale(0%); }

.ref-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 12px 16px;
  background: linear-gradient(to top, rgba(61, 61, 61, 0.65) 0%, transparent 100%);
}

.ref-label-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 15px;
  letter-spacing: 1.5px;
  color: var(--white);
}

/* ============================================================
   ANİMASYONLAR  (tüm sayfalar)
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible       { opacity: 1; transform: translateY(0); }
.reveal-delay-1       { transition-delay: 0.1s; }
.reveal-delay-2       { transition-delay: 0.2s; }
.reveal-delay-3       { transition-delay: 0.3s; }
.reveal-delay-4       { transition-delay: 0.4s; }
.reveal-delay-5       { transition-delay: 0.5s; }

.fade-in { opacity: 0; animation: fadeIn 0.7s forwards; }

@keyframes fadeIn { to { opacity: 1; } }

.fi-1 { animation-delay: 0.10s; }
.fi-2 { animation-delay: 0.25s; }
.fi-3 { animation-delay: 0.40s; }
.fi-4 { animation-delay: 0.60s; }

/* ============================================================
   INDEX — HERO
   ============================================================ */

#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 120px 40px 64px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--teal);
  position: relative;
}

.hero-tag::before { content: ''; width: 24px; height: 1px; background: var(--teal); }

.hero-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(56px, 9vw, 110px);
  line-height: 0.92;
  letter-spacing: 2px;
  color: var(--ink);
  position: relative;
  max-width: 700px;
}

.hero-title span { color: var(--teal); }

.hero-sub {
  margin-top: 28px;
  max-width: 420px;
  font-size: 16px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--muted);
  position: relative;
}

.hero-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 48px;
  position: relative;
}

.hero-stats { display: flex; gap: 48px; }

.hero-stat-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 55px;
  letter-spacing: 2px;
  line-height: 1;
  color: var(--ink);
}

.hero-stat-num span { color: var(--teal); }

.hero-stat-label {
  margin-top: 2px;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
}

.hero-scroll {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
}

.hero-scroll-line {
  width: 40px;
  height: 1px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: var(--teal);
  animation: scanline 2s ease-in-out infinite;
}

@keyframes scanline { 0% { left: -100%; } 100% { left: 100%; } }

/* ── Hakkımızda ── */

#hakkimizda { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); }

.about-left  { padding: 80px 40px; border-right: 1px solid var(--line); }
.about-right { padding: 80px 40px; display: flex; flex-direction: column; gap: 32px; }

.about-photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  display: block;
}

.about-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.about-stat { padding: 22px 24px; background: var(--bg); }

.about-stat-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 36px;
  letter-spacing: 2px;
  line-height: 1;
  color: var(--ink);
}

.about-stat-num span { color: var(--teal); }

.about-stat-label {
  margin-top: 4px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
}

/* ── Ürünler (anasayfadaki 4 kart) ── */

#urunler { border-bottom: 1px solid var(--line); }

.products-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  padding: 64px 40px 40px;
  border-bottom: 1px solid var(--line);
}

.products-header-left { max-width: 480px; }

.all-link {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1px;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s;
}

.all-link:hover { color: var(--teal); border-color: var(--teal); }

.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); }

.product-card {
  position: relative;
  display: block;
  border-right: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  background: var(--bg);
  transition: background 0.3s;
}

.product-card:last-child { border-right: none; }
.product-card:hover      { background: var(--white); }

.product-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover::after { transform: scaleX(1); }

.product-img-wrap { overflow: hidden; }

.product-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  filter: grayscale(15%);
  transition: filter 0.4s, transform 0.4s;
}

.product-card:hover .product-img { filter: grayscale(0%); transform: scale(1.03); }

.product-body { padding: 28px 28px 32px; }

.product-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 22px;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.product-desc {
  font-size: 12px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}

.product-card:hover .product-link { color: var(--teal); border-color: var(--teal); }

.s-arrow { transition: transform 0.2s; }
.product-card:hover .s-arrow { transform: translateX(4px); }

/* ── Markalar ── */

#markalar { border-bottom: 1px solid var(--line); }

.brands-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 56px 40px 32px;
  border-bottom: 1px solid var(--line);
}

.brands-scroll-wrap {
  position: relative;
  overflow: hidden;
  padding: 32px 0;
}

.brands-scroll-wrap::before,
.brands-scroll-wrap::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}

.brands-scroll-wrap::before { left: 0;  background: linear-gradient(to right, var(--bg), transparent); }
.brands-scroll-wrap::after  { right: 0; background: linear-gradient(to left,  var(--bg), transparent); }

.brands-track {
  display: flex;
  gap: 56px;
  align-items: center;
  width: max-content;
  animation: marquee 60s linear infinite;
}

.brands-track:hover { animation-play-state: paused; }

@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

.brand-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
  filter: grayscale(100%) opacity(0.45);
  transition: filter 0.3s;
}

.brand-logo:hover { filter: grayscale(0%) opacity(1); }

/* ── Referanslar (anasayfa) ── */

#referanslar { border-bottom: 1px solid var(--line); }

.ref-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 64px 40px 0;
}

.ref-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  margin-top: 40px;
  border-top: 1px solid var(--line);
}

/* ── İletişim ── */

#iletisim { display: grid; grid-template-columns: 1fr 1fr; }

/* ============================================================
   PRODUCTS.HTML — özel stiller
   ============================================================ */

.page-header {
  margin-top: 60px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  padding: 56px 40px 40px;
  border-bottom: 1px solid var(--line);
}

.page-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--teal);
}

.page-tag::before { content: ''; width: 16px; height: 1px; background: var(--teal); }

.page-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(40px, 5vw, 64px);
  letter-spacing: 2px;
  line-height: 1;
  color: var(--ink);
}

.product-count { font-size: 13px; color: var(--muted); font-weight: 300; }
.product-count span { color: var(--teal); font-weight: 500; }

/* Sidebar layout */
.products-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: calc(100vh - 60px);
}

.sidebar {
  position: sticky;
  top: 60px;
  height: calc(100vh - 60px);
  overflow-y: auto;
  padding: 32px 0;
  border-right: 1px solid var(--line);
  scrollbar-width: none;
}

.sidebar::-webkit-scrollbar { display: none; }

.sidebar-label {
  display: block;
  padding: 0 24px 16px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
}

.cat-list { list-style: none; }

.cat-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 11px 24px;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  background: none;
  border: none;
  border-left: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.cat-btn:hover  { color: var(--ink); background: rgba(0, 128, 128, 0.04); }
.cat-btn.active { color: var(--teal); border-left-color: var(--teal); background: rgba(0, 128, 128, 0.06); font-weight: 500; }

.cat-count { font-size: 11px; color: var(--muted); font-weight: 300; }
.cat-btn.active .cat-count { color: var(--teal); }

.sidebar-divider { height: 1px; background: var(--line); margin: 16px 24px; }

/* Products area */
.products-area { padding: 32px 40px 80px; }

.search-bar-wrap { margin-bottom: 32px; position: relative; }

.search-bar {
  width: 100%;
  padding: 12px 16px 12px 40px;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  outline: none;
  transition: border-color 0.2s;
}

.search-bar::placeholder { color: var(--muted); }
.search-bar:focus        { border-color: var(--teal); }

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  stroke: var(--muted);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

/* Product grid (products.html) */
.products-grid-full {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.product-card-full {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  position: relative;
  overflow: hidden;
  transition: background 0.25s;
}

.product-card-full:hover { background: var(--white); }

.product-card-full::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card-full:hover::after { transform: scaleX(1); }

.product-img-wrap-sq { overflow: hidden; aspect-ratio: 1; }

.product-img-sq {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  padding: 16px;
  background: var(--white);
  transition: transform 0.4s ease;
}

.product-card-full:hover .product-img-sq { transform: scale(1.06); }

.product-body-full { padding: 16px; flex: 1; display: flex; flex-direction: column; }

.product-brand-label {
  margin-bottom: 6px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--teal);
  font-weight: 500;
}

.product-name-full {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
}

.product-cat-tag {
  margin-top: 8px;
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.pagination-info { font-size: 12px; color: var(--muted); }
.pagination-info span { color: var(--ink); font-weight: 500; }

.pagination-pages { display: flex; align-items: center; gap: 4px; }

.page-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
  background: none;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.page-btn:hover   { border-color: var(--line); color: var(--ink); }
.page-btn.active  { border-color: var(--teal); color: var(--teal); font-weight: 500; background: rgba(0, 128, 128, 0.06); }
.page-btn:disabled { opacity: 0.3; cursor: default; }
.page-btn.arrow   { font-size: 16px; color: var(--ink); }

.page-dots { width: 34px; text-align: center; font-size: 12px; color: var(--muted); }

/* Empty state */
.empty-state { grid-column: 1 / -1; padding: 80px 40px; text-align: center; display: none; }

.empty-state-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 32px;
  letter-spacing: 2px;
  color: var(--muted);
  margin-bottom: 8px;
}

.empty-state-sub { font-size: 14px; color: var(--muted); font-weight: 300; }

/* Mobile filter */
.mobile-filter-wrap {
  display: none;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 16px 20px;
  gap: 8px;
  border-bottom: 1px solid var(--line);
}

.mobile-filter-wrap::-webkit-scrollbar { display: none; }

.mobile-cat-btn {
  flex-shrink: 0;
  white-space: nowrap;
  padding: 7px 16px;
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s;
}

.mobile-cat-btn.active { border-color: var(--teal); background: var(--teal); color: var(--white); }

/* ============================================================
   PROJECTS.HTML — özel stiller
   ============================================================ */

.projects-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: calc(100vh - 60px);
}

.projects-area { padding: 32px 40px 80px; }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.project-card {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--bg);
  overflow: hidden;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(15%);
  transition: transform 0.5s ease, filter 0.5s ease;
}

.project-card:hover img { transform: scale(1.05); filter: grayscale(0%); }

.project-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 12px 16px;
  background: linear-gradient(to top, rgba(61, 61, 61, 0.72) 0%, transparent 100%);
}

.project-name {
  display: block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 16px;
  letter-spacing: 1.5px;
  color: var(--white);
}

.project-cat {
  display: block;
  max-height: 0;
  overflow: hidden;
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 2px;
  opacity: 0;
  transition: max-height 0.3s, opacity 0.3s;
}

.project-card:hover .project-cat { max-height: 20px; opacity: 1; }

/* CTA Banner */
.cta-banner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
  padding: 48px 40px;
  border-top: 1px solid var(--line);
}

.cta-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(24px, 3vw, 36px);
  letter-spacing: 2px;
  color: var(--ink);
}

.cta-sub { margin-top: 6px; font-size: 14px; font-weight: 300; color: var(--muted); }

.cta-actions { display: flex; gap: 12px; flex-shrink: 0; }

.cta-btn-primary {
  padding: 10px 24px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--white);
  background: var(--teal);
  border: none;
  border-radius: 100px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.cta-btn-primary:hover { opacity: 0.85; }

.cta-btn-secondary {
  padding: 10px 24px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--teal);
  background: transparent;
  border: 1px solid var(--teal);
  border-radius: 100px;
  text-decoration: none;
  transition: all 0.2s;
}

.cta-btn-secondary:hover { background: var(--teal); color: var(--white); }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  nav { padding: 0 20px; }
  .nav-links { display: none; }

  /* index */
  #hero { padding: 100px 20px 48px; }
  .hero-bottom { flex-direction: column; align-items: flex-start; gap: 24px; }
  #hakkimizda { grid-template-columns: 1fr; }
  .about-left  { border-right: none; border-bottom: 1px solid var(--line); padding: 48px 20px; }
  .about-right { padding: 48px 20px; }
  .products-header { flex-direction: column; align-items: flex-start; padding: 48px 20px 32px; }
  .products-grid { grid-template-columns: 1fr 1fr; }
  .product-card:nth-child(2) { border-right: none; }
  .product-card:nth-child(3) { border-top: 1px solid var(--line); }
  .product-card:nth-child(4) { border-right: none; border-top: 1px solid var(--line); }
  .brands-header { flex-direction: column; align-items: flex-start; padding: 40px 20px 24px; }
  .ref-header { flex-direction: column; align-items: flex-start; padding: 48px 20px 0; }
  .ref-grid { grid-template-columns: 1fr 1fr; }
  #iletisim { grid-template-columns: 1fr; }
  .contact-left  { border-right: none; border-bottom: 1px solid var(--line); padding: 48px 20px; }
  .contact-right { padding: 48px 20px; }

  /* products */
  .products-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .mobile-filter-wrap { display: flex; }
  .products-area { padding: 24px 20px 60px; }
  .page-header { flex-direction: column; align-items: flex-start; padding: 40px 20px 28px; }

  /* projects */
  .projects-layout { grid-template-columns: 1fr; }
  .projects-area { padding: 24px 20px 60px; }
  .cta-banner { grid-template-columns: 1fr; padding: 40px 20px; }
  .cta-actions { flex-direction: column; }

  footer { flex-direction: column; gap: 16px; padding: 24px 20px; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}