* {
  box-sizing: border-box;
}

:root {
  --dark: #071527;
  --dark2: #0f172a;
  --blue: #0b76ff;
  --blue2: #005bd4;
  --text: #101828;
  --muted: #667085;
  --soft: #f5f7fb;
  --border: #e5e7eb;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: #fff;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: auto;
}

/* INTRO ARKA KATMAN */
.intro-box {
  position: fixed; /* ekranda sabit kalır */
  inset: 0; /* tüm ekranı kaplar */
  z-index: 9999; /* en üstte görünür */

  background: rgba(7, 21, 39, 0.72); /* yarı şeffaf koyu arka plan */
  display: flex; /* ortalamak için */
  align-items: center; /* dikey ortala */
  justify-content: center; /* yatay ortala */

  opacity: 1; /* görünür */
  transition: opacity 0.4s ease; /* kapanırken fade */
}

/* KAPANMA ANİMASYONU */
.intro-box.hide {
  opacity: 0; /* yavaşça kaybolur */
  pointer-events: none; /* tıklamayı engellemez */
}

/* VIDEO KARTI */
.intro-card {
  position: relative; /* kapatma butonu için */
  width: min(900px, 90vw); /* büyük ekranda max 900px, mobilde %90 */
  aspect-ratio: 16 / 9; /* video oranı */
  background: black;
  border-radius: 18px; /* yuvarlak köşe */
  overflow: hidden; /* taşanı kes */
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.45); /* premium gölge */
}

/* VIDEO */
.intro-card video {
  width: 100%; /* kartı doldur */
  height: 100%; /* kartı doldur */
  object-fit: cover; /* boşluk bırakmadan kırpar */
  display: block;
}

/* KAPATMA BUTONU */
.intro-close {
  position: absolute; /* kartın üstüne koy */
  top: 12px;
  right: 12px;
  z-index: 2;

  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  color: #071527;
  font-size: 26px;
  cursor: pointer;
}

/* MOBİLDE BİRAZ DAHA KOMPAKT */
@media (max-width: 640px) {
  .intro-card {
    width: 92vw;
    border-radius: 14px;
  }
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: 82px;
  z-index: 1000;
  background: rgba(7, 21, 39, .76);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.header-inner {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

/* LOGO CONTAINER */
.logo {
  display: flex; /* yan yana */
  align-items: center; /* dikey ortala */
  gap: 10px; /* logo ile yazı arası boşluk */
  text-decoration: none;
}

/* LOGO GÖRSEL */
.logo img {
  height: 60px; /* logo boyu */
  width: auto; /* oranı koru */
  display: block;
}

/* LOGO YAZI BLOĞU */
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

/* ANA İSİM */
.logo-main {
  font-size: 22px;
  font-weight: 800;
  color: white;
}

/* ALT BAŞLIK */
.logo-sub {
  font-size: 11px;
  color: #cbd5e1;
  margin-top: 3px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav > a,
.dropdown-title {
  color: white;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 32px 0;
}

.main-nav > a:hover,
.dropdown-title:hover {
  color: #7db8ff;
}

.nav-dropdown {
  position: relative;
}

.mega-menu {
  display: none;
  position: absolute;
  left: 50%;
  top: 20px;
  transform: translateX(-45%);
  width: min(920px, 90vw);
  background: white;
  border-radius: 18px;
  box-shadow: 0 25px 80px rgba(0,0,0,.22);
  padding: 28px;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.nav-dropdown:hover .mega-menu {
  display: grid;
}

.mega-column h4 {
  margin: 0 0 12px;
  color: var(--blue2);
  font-size: 15px;
}

.mega-column a {
  display: block;
  color: #334155;
  padding: 7px 0;
  font-size: 14px;
}

.mega-column a:hover {
  color: var(--blue);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.phone-link {
  color: white;
  font-weight: 700;
  font-size: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 7px;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 14px;
  border: 1px solid transparent;
}

.btn-blue {
  background: var(--blue);
  color: white;
}

.btn-blue:hover {
  background: var(--blue2);
}

.btn-outline {
  color: white;
  border-color: rgba(255,255,255,.8);
}

.btn-outline:hover {
  background: white;
  color: var(--dark);
}

.btn-outline-dark {
  color: var(--blue2);
  border-color: var(--blue2);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 30px;
}

/* HERO ANA ALAN */
.hero {
  padding: 140px 0 80px; /* üst boşluk (header için) + alt boşluk */
  background: linear-gradient(120deg, #071527, #0b3c78); /* arka plan */
  color: white; /* yazı rengi */
}

/* GRID YAPI (SOL TEXT - SAĞ VIDEO) */
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr; /* sol biraz daha geniş */
  align-items: center; /* dikey ortalama */
  gap: 50px; /* aradaki boşluk */
}

/* SOL TEXT BLOĞU */
.hero-content h1 {
  font-size: 52px; /* başlık boyutu */
  margin: 15px 0;
}

.hero-content p {
  color: #cbd5e1; /* açık gri */
  font-size: 18px;
}

/* VIDEO KAPSAYICI */
.hero-video-wrapper {
  border-radius: 20px; /* köşeleri yuvarla */
  overflow: hidden; /* taşanı kes */
  box-shadow: 0 20px 60px rgba(0,0,0,0.3); /* gölge */
}

/* VIDEO KENDİSİ */
.hero-video-wrapper video {
  width: 100%; /* genişliği doldur */
  height: 420px; /* sabit yükseklik (önemli) */
  object-fit: cover; /* kırpar ama boşluk bırakmaz */
  object-position: center center; /* ortala */
}

/* BUTONLAR */
.hero-buttons {
  margin-top: 30px;
  display: flex;
  gap: 15px;
}

/* MOBİL */
@media (max-width: 900px) {

  .hero-grid {
    grid-template-columns: 1fr; /* alt alta */
  }

  .hero-video-wrapper {
    margin-top: 30px; /* textten sonra boşluk */
  }

  .hero-video-wrapper video {
    height: 300px; /* mobilde daha küçük */
  }
}

.eyebrow {
  color: var(--blue);
  text-transform: uppercase;
  font-weight: 900;
  letter-spacing: .02em;
}

.hero h1 {
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1.02;
  margin: 14px 0 20px;
}

.hero p {
  font-size: 20px;
  color: #e2e8f0;
  line-height: 1.55;
}

.hero-buttons {
  margin-top: 34px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.brand-slider {
  padding: 34px 0 26px;
  background: white;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.small-title {
  text-align: center;
  font-size: 20px;
  text-transform: uppercase;
  margin: 0 0 22px;
}

.slider-window {
  position: relative;
  overflow: hidden;
}

.slider-track {
  width: max-content;
  display: flex;
  align-items: center;
  gap: 70px;
  animation: brandScroll 28s linear infinite;
}

.slider-track a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
}

.slider-track img {
  max-height: 56px;
  opacity: .75;
  transition: .25s;
}

.slider-track a:hover img {
  opacity: 1;
  transform: translateY(-2px);
}

@keyframes brandScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.features {
  padding: 42px 0;
  background: white;
}

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

.feature-item {
  display: flex;
  gap: 16px;
  padding: 8px 26px;
  border-right: 1px solid var(--border);
}

.feature-item:last-child {
  border-right: 0;
}

.feature-icon {
  width: 70px;
  height: 70px;
  flex: 0 0 70px;
  display: grid;
  place-items: center;
  font-size: 34px;
  background: #f0f6ff;
  border-radius: 50%;
}

.feature-item h3 {
  margin: 4px 0 8px;
  font-size: 16px;
  text-transform: uppercase;
}

.feature-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.products-section {
  padding: 48px 0 64px;
  background: white;
}

.section-title {
  text-align: center;
  font-size: 34px;
  text-transform: uppercase;
  margin: 0 0 36px;
}

.section-title::after {
  content: "";
  display: block;
  width: 84px;
  height: 4px;
  background: var(--blue);
  margin: 16px auto 0;
  border-radius: 2px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.product-card {
  display: grid;
  grid-template-columns: 42% 1fr;
  align-items: center;
  gap: 24px;
  background: #f8fafc;
  border-radius: 12px;
  padding: 24px;
  min-height: 230px;
  box-shadow: 0 12px 36px rgba(15, 23, 42, .06);
}

.product-card img {
  width: 100%;
  height: 170px;
  object-fit: contain;
}

.product-card h3 {
  font-size: 24px;
  margin: 0 0 16px;
}

.product-card p {
  color: var(--muted);
  line-height: 1.6;
}

.product-card a {
  display: inline-block;
  color: var(--blue2);
  font-weight: 900;
  margin-top: 12px;
  text-transform: uppercase;
}

/* HAKKIMIZDA ANA BLOK */
.about-section {
  display: grid; /* grid layout kullan */
  grid-template-columns: 50% 50%; /* sol (text) geniş, sağ (görsel) biraz dar */
  background: #f8fafc; /* açık gri arka plan */
}

/* SOL TEXT ALANI */
.about-text {
  padding: 60px; /* iç boşluk */
  max-width: 800px; /* metin çok uzamasın (okunabilirlik için) */

  display: flex; /* dikey ortalama için */
  flex-direction: column; /* yukarıdan aşağı diz */
  justify-content: center; /* ortala */
}

/* BAŞLIK */
.about-text h2 {
  font-size: 42px; /* büyük başlık */
  line-height: 1.2; /* satır aralığı */
  margin-bottom: 20px;
}

/* PARAGRAF */
.about-text p {
  font-size: 17px; /* okunabilir font */
  line-height: 1.8; /* rahat okuma */
  color: #64748b; /* soft gri */
}

/* SAĞ GÖRSEL */
.about-image img {
  width: 100%; /* kapsayıcıyı doldur */
  height: 100%; /* yüksekliği doldur */
  object-fit: cover; /* taşanı kırp */
}

/* MOBİL DÜZEN */
@media (max-width: 980px) {

  .about-section {
    grid-template-columns: 1fr; /* alt alta gelsin */
  }

  .about-text {
    padding: 40px 20px; /* mobilde daha az boşluk */
    max-width: 100%; /* full genişlik */
  }

}

.about-text h2 {
  font-size: 42px;
  line-height: 1.12;
  margin: 8px 0 22px;
}

.about-text p {
  color: var(--muted);
  line-height: 1.75;
  font-size: 17px;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}


.stats {
  background: linear-gradient(90deg, #071527, #082a52);
  color: white;
  padding: 38px 0;
}

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

.stats-grid div {
  text-align: center;
  border-right: 1px solid rgba(255,255,255,.18);
}

.stats-grid div:last-child {
  border-right: 0;
}

.stats-grid strong {
  display: block;
  font-size: 42px;
  margin-bottom: 6px;
}

.stats-grid span {
  color: #dbeafe;
  font-weight: 700;
}

.contact-section {
  padding: 64px 0;
  background: #f8fafc;
}

.contact-grid {
  display: grid;
  grid-template-columns: 40% 60%;
  gap: 46px;
}

.contact-grid h2 {
  font-size: 32px;
  margin: 0 0 20px;
}

.contact-grid p {
  color: var(--muted);
  line-height: 1.7;
}

.contact-info {
  margin-top: 30px;
}

.contact-info p {
  color: #1f2937;
  font-weight: 700;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #e5e7eb;
  padding: 16px;
  font-size: 15px;
  outline: none;
}

.contact-form textarea {
  grid-column: 1 / -1;
  min-height: 120px;
}

.contact-form button {
  grid-column: 1 / -1;
  border: 0;
  cursor: pointer;
}

.footer {
  background: #071527;
  color: white;
  padding: 48px 0 18px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 40px;
}

.footer h3,
.footer h4 {
  margin-top: 0;
}

.footer a,
.footer p {
  color: #cbd5e1;
  display: block;
  line-height: 1.8;
}

.footer a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  margin-top: 28px;
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: #94a3b8;
  font-size: 14px;
}

.brand-page-hero {
  padding: 150px 0 70px;
  background: linear-gradient(120deg, #071527, #0b3c78);
  color: white;
}

.brand-page-hero h1 {
  font-size: 48px;
  line-height: 1.12;
  margin: 0 0 14px;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.brand-content {
  padding: 60px 0;
}

.catalog-page-hero {
  background: white;
  color: #367a78;
  padding: 150px 0 28px;
  text-align: center;
}

.catalog-page-hero h1 {
  font-size: 36px;
  font-weight: 500;
  line-height: 1.2;
  margin: 0;
  overflow-wrap: anywhere;
  text-transform: uppercase;
}

.catalog-content {
  padding: 30px 0 90px;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 180px));
  gap: 50px 20px;
  justify-content: center;
}

.catalog-grid.is-single {
  grid-template-columns: minmax(240px, 310px);
  justify-content: center;
}

.catalog-card {
  min-width: 0;
  text-align: center;
}

.catalog-cover {
  background: white;
  border: 0;
  display: block;
  padding: 0;
  width: 100%;
}

.catalog-cover img {
  aspect-ratio: 4 / 5;
  display: block;
  object-fit: contain;
  width: 100%;
}

.catalog-card h2,
.catalog-card h3 {
  color: #367a78;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.25;
  margin: 22px 0 0;
}

.catalog-detail {
  margin: 0 auto;
  max-width: 760px;
  text-align: center;
}

.catalog-detail .catalog-cover {
  cursor: zoom-in;
  margin: 0 auto;
  max-width: 380px;
}

.catalog-detail h2 {
  color: #367a78;
  font-size: 30px;
  font-weight: 500;
  margin: 28px 0 10px;
}

.catalog-detail .product-actions {
  justify-content: center;
}

.catalog-detail .product-meta {
  margin-left: auto;
  margin-right: auto;
  max-width: 560px;
  text-align: left;
}

.brand-content p {
  color: var(--muted);
  line-height: 1.75;
  font-size: 17px;
}

.product-detail {
  display: grid;
  grid-template-columns: minmax(320px, 52%) 1fr;
  gap: 48px;
  align-items: start;
}

.product-gallery {
  min-width: 0;
}

.gallery-main {
  width: 100%;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--border);
  background: white;
  border-radius: 8px;
  display: grid;
  place-items: center;
  padding: 26px;
  cursor: zoom-in;
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.gallery-thumbs {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.gallery-thumb {
  width: 92px;
  height: 92px;
  flex: 0 0 92px;
  border: 1px solid var(--border);
  background: white;
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
}

.gallery-thumb.is-active {
  border-color: var(--blue);
  box-shadow: 0 0 0 2px rgba(11, 118, 255, .14);
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.product-summary {
  padding-top: 8px;
}

.product-brand {
  color: var(--blue2);
  font-size: 14px;
  font-weight: 900;
  margin: 0 0 10px;
  text-transform: uppercase;
}

.product-summary h2 {
  font-size: 38px;
  line-height: 1.15;
  margin: 0 0 12px;
  overflow-wrap: anywhere;
}

.product-subtitle {
  color: var(--text) !important;
  font-size: 20px !important;
  font-weight: 800;
  margin: 0 0 18px;
}

.product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0;
}

.product-meta {
  border-top: 1px solid var(--border);
  margin: 28px 0 0;
  padding: 18px 0 0;
}

.product-meta div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  padding: 8px 0;
}

.product-meta dt {
  color: var(--text);
  font-weight: 900;
}

.product-meta dd {
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
}

.product-description {
  border-top: 1px solid var(--border);
  margin-top: 54px;
  padding-top: 34px;
}

.product-description h2 {
  font-size: 28px;
  margin: 0 0 18px;
}

.spec-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 22px 0;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  background: white;
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--border);
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
  line-height: 1.55;
}

.spec-table th {
  background: #eef5ff;
  color: var(--text);
  font-weight: 900;
}

.spec-table td {
  color: var(--muted);
}

.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(7, 21, 39, .88);
  padding: 64px;
}

.image-lightbox.is-open {
  display: flex;
}

.image-lightbox img {
  max-width: min(1100px, 88vw);
  max-height: 84vh;
  object-fit: contain;
  background: white;
  border-radius: 8px;
  padding: 18px;
}

.lightbox-open {
  overflow: hidden;
}

.lightbox-close,
.lightbox-nav {
  position: absolute;
  border: 0;
  background: rgba(255, 255, 255, .94);
  color: var(--dark);
  cursor: pointer;
  display: grid;
  place-items: center;
}

.lightbox-close {
  top: 22px;
  right: 22px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 34px;
  line-height: 1;
}

.lightbox-nav {
  top: 50%;
  width: 48px;
  height: 64px;
  transform: translateY(-50%);
  border-radius: 8px;
  font-size: 44px;
}

.lightbox-prev {
  left: 22px;
}

.lightbox-next {
  right: 22px;
}

.back-link {
  display: inline-block;
  margin-top: 24px;
  color: var(--blue);
  font-weight: 800;
}

@media (max-width: 980px) {
  .mobile-menu-btn {
    display: block;
  }

  .main-nav,
  .header-actions {
    display: none;
  }

  .main-nav.open {
    display: flex;
    position: absolute;
    left: 20px;
    right: 20px;
    top: 82px;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    background: #071527;
    border-radius: 16px;
    padding: 20px;
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav.open > a,
  .main-nav.open .dropdown-title {
    padding: 8px 0;
  }

  .main-nav.open .nav-dropdown {
    width: 100%;
  }

  .main-nav.open .mega-menu {
    position: static;
    transform: none;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 12px;
    padding: 16px;
    background: #0f233d;
    box-shadow: none;
    border-radius: 12px;
  }

  .main-nav.open .mega-column {
    margin-bottom: 16px;
  }

  .main-nav.open .mega-column h4 {
    color: #7db8ff;
  }

  .main-nav.open .mega-column a {
    color: #e2e8f0;
  }

  .features-grid,
  .product-grid,
  .stats-grid,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .contact-grid,
  .about-section,
  .product-detail {
    grid-template-columns: 1fr;
  }

  .catalog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about-text {
    padding: 50px 30px;
  }
}

@media (max-width: 640px) {
  .catalog-page-hero {
    padding: 120px 0 20px;
  }

  .catalog-page-hero h1 {
    font-size: 30px;
  }

  .catalog-content {
    padding: 24px 0 64px;
  }

  .catalog-grid,
  .catalog-grid.is-single {
    grid-template-columns: minmax(0, 1fr);
  }

  .catalog-card {
    margin: 0 auto;
    max-width: 300px;
    width: 100%;
  }

  .brand-page-hero h1 {
    font-size: 36px;
  }

  .hero {
    min-height: 620px;
  }

  .features-grid,
  .product-grid,
  .stats-grid,
  .footer-grid,
  .contact-form {
    grid-template-columns: 1fr;
  }

  .feature-item,
  .stats-grid div {
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: 22px 0;
  }

  .stats-grid div {
    border-bottom-color: rgba(255,255,255,.18);
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .product-summary h2 {
    font-size: 30px;
  }

  .product-meta div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .spec-table th,
  .spec-table td {
    padding: 10px 8px;
    font-size: 13px;
  }

  .image-lightbox {
    padding: 54px 16px;
  }

  .lightbox-nav {
    bottom: 18px;
    top: auto;
    transform: none;
  }
}