/* ---------- Header ---------- */
.header { position: -webkit-sticky; position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.72); backdrop-filter: saturate(180%) blur(16px); -webkit-backdrop-filter: saturate(180%) blur(16px); border-bottom: 1px solid transparent; transition: background .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease); }
.header.is-scrolled { background: rgba(255,255,255,.82); border-color: var(--color-border); box-shadow: var(--shadow-sm); }
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .header { background: rgba(255,255,255,.97); }
  .header.is-scrolled { background: #fff; }
}
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: var(--header-h); }
.header__logo { flex: none; display: inline-flex; }
.header__logo img { height: 42px; width: auto; max-width: none; }
.nav { display: none; }
.nav__list { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav__link { white-space: nowrap; display: inline-flex; align-items: center; gap: 6px; padding: 10px 14px; border-radius: 10px; font-weight: 500; font-size: .95rem; color: var(--color-navy); }
.nav__link:hover, .nav__link[aria-current="page"] { color: var(--color-blue-medium); background: var(--color-background-blue-soft); }
.nav__item--has-sub { position: relative; }
.nav__link svg { width: 14px; height: 14px; transition: transform .2s var(--ease); }
.nav__item--has-sub:hover .nav__link svg, .nav__item--has-sub:focus-within .nav__link svg { transform: rotate(180deg); }
.nav__sub { position: absolute; top: calc(100% + 6px); left: 0; min-width: 260px; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 8px; list-style: none; margin: 0; opacity: 0; visibility: hidden; transform: translateY(6px); transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s; }
.nav__item--has-sub:hover .nav__sub, .nav__item--has-sub:focus-within .nav__sub { opacity: 1; visibility: visible; transform: none; }
.nav__sub a { display: flex; align-items: center; gap: 12px; padding: 9px 12px; border-radius: 8px; color: var(--color-navy); font-size: .92rem; }
.nav__sub a:hover { background: var(--color-background-blue-soft); color: var(--color-blue-medium); }
.nav__sub a strong { display: inline-block; min-width: 40px; font-weight: 700; color: var(--color-blue-medium); }
.header__actions { display: flex; align-items: center; gap: 8px; }
.lang { display: inline-flex; border: 1px solid var(--color-border); border-radius: 999px; padding: 3px; background: #fff; }
.lang a { padding: 5px 11px; border-radius: 999px; font-size: .8rem; font-weight: 600; color: var(--color-text-secondary); }
.lang a[aria-current="true"] { background: var(--color-navy); color: #fff; }
.header .header__cta { display: none; }
.burger { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 0 10px; border: 1px solid var(--color-border); background: #fff; border-radius: 10px; }
.burger span { display: block; height: 2px; background: var(--color-navy); border-radius: 2px; transition: transform .25s var(--ease), opacity .2s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav { display: none; border-top: 1px solid var(--color-border); background: #fff; padding: 12px 0 20px; }
.mobile-nav.is-open { display: block; }
.mobile-nav ul { list-style: none; margin: 0; padding: 0; }
.mobile-nav > .container > ul > li > a { display: block; padding: 12px 4px; font-weight: 600; color: var(--color-navy); border-bottom: 1px solid var(--color-border); }
.mobile-nav ul ul { padding: 6px 0 6px 14px; }
.mobile-nav ul ul a { display: block; padding: 8px 4px; font-size: .95rem; color: var(--color-text-secondary); }
.mobile-nav .btn { margin-top: 16px; width: 100%; }
@media (max-width: 380px) {
  .header__inner { gap: 8px; }
  .header__logo img { height: 32px; }
  .header__actions { gap: 6px; }
  .lang a { padding: 5px 8px; }
}
@media (min-width: 960px) {
  .header__inner { gap: 24px; }
  .header__actions { gap: 10px; }
  .nav { display: block; }
  .burger, .mobile-nav { display: none !important; }
  .header .header__cta { display: inline-flex; }
}

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 24px; border-radius: 12px; font-weight: 600; font-size: .95rem; line-height: 1; border: 1px solid transparent; transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease); white-space: nowrap; }
.btn svg { width: 16px; height: 16px; }
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--color-navy); color: #fff; box-shadow: 0 4px 14px rgba(36,41,85,.22); }
.btn--primary:hover { background: var(--color-navy-deep); color: #fff; box-shadow: 0 8px 22px rgba(36,41,85,.28); }
.btn--blue { background: var(--color-blue); color: #fff; box-shadow: 0 4px 14px rgba(38,158,217,.3); }
.btn--blue:hover { background: var(--color-blue-medium); color: #fff; }
.btn--outline { background: #fff; color: var(--color-navy); border-color: var(--color-border); }
.btn--outline:hover { border-color: var(--color-blue); color: var(--color-blue-medium); }
.btn--light { background: #fff; color: var(--color-navy); }
.btn--light:hover { color: var(--color-blue-medium); }
.btn--accent { background: var(--color-orange); color: #fff; box-shadow: 0 4px 14px rgba(239,119,77,.3); }
.btn--accent:hover { background: rgb(226, 105, 62); color: #fff; }
.hero .btn[href*="#teklif"],
.page-hero--product .btn[href*="#teklif"] { background: var(--color-orange); color: #fff; border-color: var(--color-orange); box-shadow: 0 4px 14px rgba(239,119,77,.3); }
.hero .btn[href*="#teklif"]:hover,
.page-hero--product .btn[href*="#teklif"]:hover { background: rgb(226, 105, 62); border-color: rgb(226, 105, 62); color: #fff; box-shadow: 0 8px 22px rgba(239,119,77,.36); }
.btn--sm { padding: 10px 16px; font-size: .88rem; border-radius: 10px; }
.btn--lg { padding: 16px 30px; font-size: 1.02rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--color-blue-medium); }
.link-arrow svg { width: 16px; height: 16px; transition: transform .2s var(--ease); }
.link-arrow:hover svg { transform: translateX(3px); }

/* ---------- Cards ---------- */
.card { min-width: 0; overflow-wrap: break-word; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(38,158,217,.35); }
.card__icon { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--color-background-blue-soft); color: var(--color-blue-medium); margin-bottom: 18px; }
.card__icon svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--color-text-secondary); font-size: .95rem; }
.card--accent { border-top: 3px solid var(--color-orange); }

/* Renkli kart varyantlari */
.card--orange { background: var(--color-orange); border-color: var(--color-orange); }
.card--orange h3 { color: #fff; }
.card--orange p { color: rgba(255,255,255,.92); }
.card--orange .card__icon { background: rgba(255,255,255,.22); color: #fff; }
.card--orange:hover { border-color: var(--color-orange); box-shadow: 0 10px 28px rgba(239,119,77,.3); }

.card--navy { background: var(--color-navy-deep); border-color: var(--color-navy-deep); }
.card--navy h3 { color: #fff; }
.card--navy p { color: rgba(255,255,255,.78); }
.card--navy .card__icon { background: rgba(255,255,255,.14); color: #fff; }
.card--navy:hover { border-color: var(--color-navy-deep); box-shadow: 0 10px 28px rgba(36,41,85,.32); }

.card--tint { background: var(--color-blue-tint); border-color: rgba(38,158,217,.22); }
.card--tint .card__icon { background: #fff; }
.card--tint:hover { border-color: rgba(38,158,217,.45); }

.product-card { min-width: 0; overflow-wrap: break-word; position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 28px; overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease); }
.product-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--color-blue); }
.product-card:nth-child(5n+1)::before { background: var(--color-navy); }
.product-card:nth-child(5n+2)::before { background: var(--color-blue); }
.product-card:nth-child(5n+3)::before { background: var(--color-blue-medium); }
.product-card:nth-child(5n+4)::before { background: var(--color-orange); }
.product-card:nth-child(5n+5)::before { background: var(--color-red-orange); }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(38,158,217,.35); }
.product-card__code { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.04em; color: var(--color-navy); line-height: 1; }
.product-card__code small { font-size: 1.1rem; font-weight: 500; color: var(--color-text-secondary); letter-spacing: 0; margin-left: 8px; }
.product-card__code.is-long { font-size: 1.6rem; }
.product-card p { color: var(--color-text-secondary); font-size: .95rem; margin: 14px 0 18px; flex: 1; }
.product-card .link-arrow { margin-top: auto; }
.product-tile { min-width: 0; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); color: inherit; text-decoration: none; transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease); }
.product-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(38,158,217,.35); }
.product-tile__img { aspect-ratio: 16 / 10; overflow: hidden; background: var(--color-background-soft); }
.product-tile__img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s var(--ease); }
.product-tile:hover .product-tile__img img { transform: scale(1.03); }
.product-tile__body { display: flex; flex-direction: column; flex: 1; padding: 24px 26px 26px; }
.product-tile__body p { color: var(--color-text-secondary); font-size: .95rem; margin: 14px 0 18px; flex: 1; }
.product-tile__body .link-arrow { margin-top: auto; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.chip { display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: .74rem; font-weight: 600; background: var(--color-background-blue-soft); color: var(--color-blue-medium); border: 1px solid rgba(38,158,217,.2); }
.chip--navy { background: var(--color-navy); color: #fff; border-color: var(--color-navy); }

.stat { min-width: 0; text-align: center; padding: 28px 16px; }
.stat__num { font-size: 2.6rem; font-weight: 800; letter-spacing: -0.03em; color: var(--color-navy); line-height: 1; }
.stat__num span { color: var(--color-blue); }
.stat__label { margin-top: 8px; color: var(--color-text-secondary); font-size: .95rem; }

.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--color-text-primary); }
.check-list li::before { content: ""; flex: none; width: 20px; height: 20px; margin-top: 2px; border-radius: 50%; background: var(--color-blue-tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232e82c4' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/11px no-repeat; }

.sector-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.sector { min-width: 0; display: flex; align-items: center; gap: 10px; padding: 14px 16px; background: #fff; border: 1px solid var(--color-border); border-radius: 12px; font-weight: 500; font-size: .92rem; transition: border-color .2s var(--ease), transform .2s var(--ease); }
.sector span { min-width: 0; overflow-wrap: break-word; }
.sector:hover { border-color: var(--color-blue); transform: translateY(-2px); }
.sector svg { width: 22px; height: 22px; color: var(--color-blue-medium); flex: none; }
@media (min-width: 640px) { .sector-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 960px) { .sector-grid { grid-template-columns: repeat(5, 1fr); } .sector-grid--3 { grid-template-columns: repeat(3, 1fr); } }

.logo-strip { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.logo-strip__item { display: grid; place-items: center; height: 84px; padding: 16px 22px; background: #fff; border: 1px solid var(--color-border); border-radius: 12px; transition: border-color .2s var(--ease), box-shadow .2s var(--ease); }
.logo-strip__item:hover { border-color: rgba(38,158,217,.4); box-shadow: var(--shadow-sm); }
.logo-strip__item img { max-height: 40px; width: auto; max-width: 100%; object-fit: contain; }
/* Kare/dikey logolar 40px yukseklikte optik olarak kucuk kaliyor; dengelemek icin biraz buyutulur */
.logo-strip__item img[src*="shell"],
.logo-strip__item img[src*="advanced-petrochemical"] { max-height: 52px; }
.logo-strip__item img[src*="reliance"] { max-height: 46px; }
@media (min-width: 640px) { .logo-strip { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 960px) { .logo-strip { grid-template-columns: repeat(6, 1fr); } .logo-strip__item { height: 92px; } }

.media { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.media img { width: 100%; height: 100%; object-fit: cover; }

.cta-band { background: var(--color-navy); color: #fff; border-radius: var(--radius-lg); padding: 48px 32px; position: relative; overflow: hidden; }
.cta-band::after { content: ""; position: absolute; right: -60px; top: -60px; width: 260px; height: 260px; border-radius: 50%; background: radial-gradient(circle, rgba(38,158,217,.45), transparent 70%); pointer-events: none; }
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,.78); max-width: 640px; }
.cta-band__inner { position: relative; display: grid; gap: 24px; align-items: center; }
@media (min-width: 960px) { .cta-band { padding: 64px; } .cta-band__inner { grid-template-columns: 1.4fr auto; } }

.info-card { min-width: 0; overflow-wrap: break-word; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; }
.info-card__row { display: flex; gap: 14px; align-items: flex-start; padding: 12px 0; border-bottom: 1px solid var(--color-border); }
.info-card__row:last-child { border-bottom: 0; }
.info-card__row svg { width: 20px; height: 20px; color: var(--color-orange); flex: none; margin-top: 3px; }
.info-card__row small { display: block; font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--color-text-secondary); font-weight: 600; }
.info-card__row a { color: var(--color-navy); }
.info-card__row a:hover { color: var(--color-blue-medium); }

.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; list-style: none; margin: 0 0 20px; padding: 0; font-size: .86rem; color: var(--color-text-secondary); }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: var(--color-border); }
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-blue-medium); }

.notice { display: flex; gap: 14px; align-items: flex-start; padding: 18px 20px; background: var(--color-background-blue-soft); border: 1px solid rgba(38,158,217,.25); border-radius: 12px; font-size: .95rem; }
.notice svg { width: 22px; height: 22px; color: var(--color-blue-medium); flex: none; margin-top: 2px; }
.notice--accent { background: var(--color-orange-tint); border-color: rgba(239,119,77,.3); }
.notice--accent svg { color: var(--color-orange); }

/* ---------- Forms ---------- */
.form { display: grid; gap: 16px; }
.form__row { display: grid; gap: 16px; }
@media (min-width: 640px) { .form__row { grid-template-columns: 1fr 1fr; } }
.field label { display: block; font-size: .86rem; font-weight: 600; margin-bottom: 6px; }
.field input, .field select, .field textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--color-border); border-radius: 10px; background: #fff; color: var(--color-navy); transition: border-color .2s var(--ease), box-shadow .2s var(--ease); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--color-blue); box-shadow: 0 0 0 3px var(--color-blue-tint); }
.field textarea { min-height: 140px; resize: vertical; }
.field--error input, .field--error select, .field--error textarea { border-color: var(--color-red-orange); }
.field__error { display: none; font-size: .8rem; color: var(--color-red-orange); margin-top: 4px; }
.field--error .field__error { display: block; }
.form__status { display: none; padding: 14px 16px; border-radius: 10px; font-size: .95rem; }
.form__status.is-success { display: block; background: rgba(38,158,217,.12); color: var(--color-navy); }
.form__status.is-error { display: block; background: rgba(231,58,33,.1); color: var(--color-red-orange); }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }

/* ---------- Footer ---------- */
.footer { background: var(--color-navy); color: rgba(255,255,255,.78); padding: 64px 0 0; font-size: .93rem; }
.footer a { color: rgba(255,255,255,.78); }
.footer a:hover { color: #fff; }
.footer__grid { display: grid; gap: 36px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .footer__grid { grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 48px; } }
.footer__brand { display: inline-block; background: #fff; padding: 10px 14px; border-radius: 10px; margin-bottom: 18px; }
.footer__brand img {   display: block; width: 100%; height: auto; }
.footer h4 { color: #fff; font-size: .95rem; margin-bottom: 16px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.footer__contact li { display: flex; gap: 10px; align-items: flex-start; min-width: 0; }
.footer__contact li > span { min-width: 0; overflow-wrap: break-word; }
.footer__contact svg { width: 18px; height: 18px; flex: none; margin-top: 3px; color: var(--color-orange); }
.footer__bottom { margin-top: 48px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,.12); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: .82rem; color: rgba(255,255,255,.55); }