/* =====================================================================
   EFE BETON PREFABRİK - ANA STİL DOSYASI
   -------------------------------------------------------------
   RENK PALETİ NOTU: Kurumsal renkler = Koyu/kapalı turkuaz + Beyaz + Siyah.
   Aşağıdaki gri tonlar bu 3 rengin (özellikle siyahın) açık tonlarıdır,
   sadece okunabilirlik/derinlik için kullanılır; ayrı bir "renk" değildir.
   Bu bölümdeki (:root) değerleri değiştirmek TÜM SİTENİN rengini günceller.
===================================================================== */

:root {
    /* --- Kurumsal Ana Renkler --- */
    --color-primary: #0E4A47;        /* Koyu/kapalı turkuaz - ana marka rengi */
    --color-primary-dark: #082F2D;   /* Daha koyu turkuaz - hover/gradient */
    --color-primary-light: #2FBF8F;  /* Logo yeşili-turkuaz - vurgu/accent rengi */
    --color-black: #10161A;          /* Neredeyse siyah - başlıklar / footer */
    --color-white: #FFFFFF;

    /* --- Siyah/Beyazın türetilmiş tonları (nötr, sadece düzen amaçlı) --- */
    --gray-50: #F7F9F9;
    --gray-100: #EEF3F2;
    --gray-200: #E1E8E7;
    --gray-400: #9BA9A8;
    --gray-600: #5C6B6A;
    --gray-800: #263133;

    /* --- Tipografi --- */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* --- Diğer --- */
    --radius: 12px;
    --radius-sm: 6px;
    --shadow: 0 10px 30px rgba(14, 74, 71, 0.12);
    --shadow-sm: 0 4px 12px rgba(16, 22, 26, 0.08);
    --transition: 0.3s ease;
    --header-height: 108px;
}

/* =====================================================================
   1. RESET & TEMEL AYARLAR
===================================================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }

body {
    font-family: var(--font-body);
    color: var(--gray-800);
    background: var(--color-white);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4, h5 { font-family: var(--font-heading); color: var(--color-black); line-height: 1.25; }

.container { max-width: 1220px; margin: 0 auto; padding: 0 20px; }

/* Erişilebilirlik: sadece ekran okuyucular için */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* =====================================================================
   2. GENEL BİLEŞENLER: Butonlar, Rozetler, Section başlıkları
===================================================================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 30px; border-radius: 50px; font-weight: 600; font-size: 0.95rem;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    white-space: normal; text-align: center; max-width: 100%;
}
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: var(--color-white);
    box-shadow: 0 8px 20px rgba(47, 191, 143, 0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 26px rgba(47, 191, 143, 0.45); }
.btn-outline {
    background: transparent; color: var(--color-white); border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover { background: var(--color-white); color: var(--color-primary); border-color: var(--color-white); }
.btn-dark { background: var(--color-black); color: var(--color-white); }
.btn-dark:hover { background: var(--color-primary-dark); transform: translateY(-3px); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: not-allowed; transform: none !important; }

.section { padding: 90px 0; }
.section-alt { background: var(--gray-50); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 55px; }
.eyebrow {
    display: inline-block; color: var(--color-primary); background: rgba(47,191,143,0.12);
    font-weight: 700; font-size: 0.78rem; letter-spacing: 1.5px; text-transform: uppercase;
    padding: 6px 16px; border-radius: 50px; margin-bottom: 16px;
}
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin-bottom: 14px; }
.section-head p { color: var(--gray-600); font-size: 1.05rem; }

/* Scroll ile içeri belirme animasyonu (JS: IntersectionObserver .in-view ekler) */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }
.reveal-delay-1.in-view { transition-delay: .1s; }
.reveal-delay-2.in-view { transition-delay: .2s; }
.reveal-delay-3.in-view { transition-delay: .3s; }

/* =====================================================================
   3. SAYFA YÜKLEME EKRANI (CSS LOADER)
===================================================================== */
#page-loader {
    position: fixed; inset: 0; background: var(--color-white); z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    transition: opacity .5s ease, visibility .5s ease;
}
#page-loader.loaded { opacity: 0; visibility: hidden; }
.loader-ring {
    width: 56px; height: 56px; border-radius: 50%;
    border: 5px solid var(--gray-200); border-top-color: var(--color-primary-light);
    animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Scroll ilerleme çubuğu (JS ile genişliği güncellenir) */
#scroll-indicator {
    position: fixed; top: 0; left: 0; height: 4px; width: 0%;
    background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary));
    z-index: 2100; transition: width .1s ease-out;
}

/* =====================================================================
   4. ÜST BİLGİ ÇUBUĞU (TOPBAR)
===================================================================== */
.topbar { background: var(--color-black); color: var(--gray-200); font-size: 0.85rem; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; padding: 9px 20px; }
.topbar-info { display: flex; gap: 22px; }
.topbar-item { display: inline-flex; align-items: center; gap: 6px; color: var(--gray-200); transition: color var(--transition); }
.topbar-item:hover { color: var(--color-primary-light); }
.topbar-service {
    display: inline-flex; align-items: center; gap: 6px; color: var(--gray-200);
    text-transform: uppercase; letter-spacing: .04em; font-weight: 600; font-size: .78rem;
    transition: color var(--transition);
}
.topbar-service:hover, .topbar-service.active { color: var(--color-primary-light); }
.topbar-right { display: flex; align-items: center; gap: 18px; }
.topbar-social { display: flex; align-items: center; gap: 14px; padding-left: 18px; border-left: 1px solid rgba(255,255,255,.18); }
.topbar-social a { display: inline-flex; color: var(--gray-200); transition: color var(--transition); }
.topbar-social a:hover { color: var(--color-primary-light); }

/* =====================================================================
   5. ANA MENÜ (NAVBAR) + AÇILIR MENÜ + HAMBURGER
===================================================================== */
.site-header { position: sticky; top: 0; z-index: 1000; background: var(--color-white); box-shadow: var(--shadow-sm); }
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; gap: 20px; }
.navbar-brand img { height: 60px; width: auto; }

.nav-menu { display: flex; align-items: center; gap: 34px; }
.nav-menu > li { position: relative; }
.nav-menu > li > a {
    font-weight: 600; font-size: 0.92rem; color: var(--gray-800); padding: 8px 2px; position: relative;
    text-transform: uppercase; letter-spacing: .03em;
}
.nav-menu > li > a::after {
    content: ''; position: absolute; left: 0; bottom: -2px; width: 0; height: 3px; border-radius: 2px;
    background: var(--color-primary-light); transition: width var(--transition);
}
.nav-menu > li > a:hover::after, .nav-menu > li > a.active::after { width: 100%; }
.nav-menu > li > a:hover, .nav-menu > li > a.active { color: var(--color-primary); }
.nav-parent-row { display: flex; align-items: center; }
.nav-parent-row > a { font-weight: 600; font-size: .92rem; color: var(--gray-800); padding: 8px 2px; text-transform: uppercase; letter-spacing: .03em; }
.nav-parent-row > a:hover, .nav-parent-row > a.active { color: var(--color-primary); }
.dropdown-toggle { display: none; width: 40px; height: 40px; color: var(--color-primary); font-size: 1.25rem; }
.mobile-nav-cta { display: none; }

/* Ürünler açılır (dropdown) menüsü */
.has-dropdown .dropdown {
    position: absolute; top: 130%; left: -20px; background: var(--color-white); min-width: 260px;
    border-radius: var(--radius); box-shadow: var(--shadow); padding: 10px; opacity: 0; visibility: hidden;
    transform: translateY(10px); transition: all var(--transition); z-index: 50;
}
.has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown li a { display: block; padding: 10px 14px; border-radius: var(--radius-sm); font-size: 0.92rem; color: var(--gray-800); }
.dropdown li a:hover { background: var(--gray-50); color: var(--color-primary); padding-left: 20px; }

.nav-cta { flex-shrink: 0; padding: 12px 26px; }

.hamburger { display: none; flex-direction: column; gap: 5px; width: 30px; z-index: 1200; }
.hamburger span { display: block; height: 3px; width: 100%; background: var(--color-black); border-radius: 3px; transition: all var(--transition); }
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.nav-overlay { display: none; position: fixed; inset: 0; background: rgba(16,22,26,0.5); z-index: 999; }
.nav-overlay.show { display: block; }

/* =====================================================================
   6. BREADCRUMB (SAYFA İZİ)
===================================================================== */
.breadcrumb-bar { background: var(--gray-50); border-bottom: 1px solid var(--gray-200); }
.breadcrumb-inner { padding: 14px 20px; font-size: 0.88rem; color: var(--gray-600); display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.breadcrumb-inner a:hover { color: var(--color-primary); }
.breadcrumb-inner .sep { color: var(--gray-400); }
.breadcrumb-inner .current { color: var(--color-primary); font-weight: 600; }

/* =====================================================================
   7. HERO (ANA SAYFA GİRİŞ ALANI)
===================================================================== */
.hero {
    position: relative; min-height: max(620px, calc(100svh - 128px)); display: flex; align-items: center; color: var(--color-white);
    background: linear-gradient(90deg, rgba(8,47,45,.95) 0%, rgba(8,47,45,.86) 38%, rgba(14,74,71,.45) 72%, rgba(14,74,71,.25) 100%),
                url('../img/site/hero-efe-beton-prefabrik.jpg') center/cover no-repeat;
    overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; width: 600px; height: 600px; border-radius: 50%;
    background: radial-gradient(circle, rgba(47,191,143,.35), transparent 70%);
    top: -200px; right: -150px;
}
.hero-inner { position: relative; z-index: 2; width: 100%; max-width: 1220px; padding-top: 72px; padding-bottom: 116px; }
.hero-inner .eyebrow { background: rgba(255,255,255,.15); color: var(--color-white); }
.hero-inner h1 { max-width: 760px; font-size: clamp(2.1rem, 4.5vw, 3.4rem); color: var(--color-white); margin-bottom: 20px; }
.hero-inner h1 span { color: var(--color-primary-light); }
.hero-inner p { font-size: 1.1rem; color: rgba(255,255,255,.88); margin-bottom: 34px; max-width: 600px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-actions .btn svg { flex-shrink: 0; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 10px 26px; margin-top: 30px; color: rgba(255,255,255,.9); font-size: .92rem; font-weight: 500; }
.hero-trust li { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust svg { color: var(--color-primary-light); flex-shrink: 0; }
.hero-scroll-indicator {
    position: absolute; z-index: 3; left: 50%; bottom: 24px; transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center; gap: 7px; color: rgba(255,255,255,.82);
}
.hero-scroll-indicator:focus-visible { outline: 2px solid var(--color-primary-light); outline-offset: 7px; border-radius: 20px; }
.hero-scroll-mouse { position: relative; width: 26px; height: 40px; border: 2px solid rgba(255,255,255,.72); border-radius: 16px; }
.hero-scroll-mouse span { position: absolute; top: 7px; left: 50%; width: 4px; height: 7px; margin-left: -2px; border-radius: 4px; background: var(--color-primary-light); animation: hero-scroll-wheel 1.8s ease-in-out infinite; }
.hero-scroll-indicator svg { animation: hero-scroll-arrow 1.8s ease-in-out infinite; }
@keyframes hero-scroll-wheel {
    0% { opacity: 0; transform: translateY(0); }
    25% { opacity: 1; }
    75% { opacity: 1; }
    100% { opacity: 0; transform: translateY(13px); }
}
@keyframes hero-scroll-arrow {
    0%, 100% { transform: translateY(0); opacity: .55; }
    50% { transform: translateY(5px); opacity: 1; }
}

/* =====================================================================
   8. HAKKIMIZDA ÖZET (ANA SAYFA)
===================================================================== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-grid h2 { margin-bottom: 16px; }
.about-grid p + p { margin-top: 12px; }
.about-img-wrap { position: relative; }
.about-img-wrap img { border-radius: var(--radius); box-shadow: var(--shadow); }
.about-img-badge {
    position: absolute; bottom: -25px; right: -25px; background: var(--color-primary);
    color: var(--color-white); padding: 22px 26px; border-radius: var(--radius); box-shadow: var(--shadow);
}
.about-img-badge strong { display: block; font-size: 1.8rem; font-family: var(--font-heading); color: var(--color-primary-light); }
.about-img-badge span { font-size: 0.82rem; }

.about-list { margin: 26px 0; display: grid; gap: 14px; }
.about-list li { display: flex; align-items: flex-start; gap: 12px; font-weight: 500; color: var(--gray-800); }
.about-list li .check {
    flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: rgba(47,191,143,0.15);
    color: var(--color-primary); display: flex; align-items: center; justify-content: center; margin-top: 2px;
}

/* =====================================================================
   9. HİZMET / ÜRÜN KARTLARI (ANİMASYONLU)
===================================================================== */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.service-card {
    background: var(--color-white); border-radius: var(--radius); padding: 34px 26px; text-align: left;
    box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative; overflow: hidden;
}
.service-card:hover { transform: translateY(-10px); box-shadow: var(--shadow); border-color: transparent; }
.service-card .icon-box {
    width: 58px; height: 58px; border-radius: var(--radius-sm); margin-bottom: 20px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    display: flex; align-items: center; justify-content: center; color: var(--color-white);
    transition: transform var(--transition);
}
.service-card:hover .icon-box { transform: rotate(-8deg) scale(1.08); }
.service-card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.service-card p { color: var(--gray-600); font-size: 0.92rem; margin-bottom: 16px; }
.service-card .card-link { font-weight: 700; font-size: 0.86rem; color: var(--color-primary); display: inline-flex; align-items: center; gap: 6px; }
.service-card .card-link svg { transition: transform var(--transition); }
.service-card:hover .card-link svg { transform: translateX(5px); }

/* =====================================================================
   10. "NEDEN BİZ" BÖLÜMÜ
===================================================================== */
.why-us { background: var(--color-black); color: var(--color-white); position: relative; overflow: hidden; }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.why-item { text-align: center; padding: 20px; }
.why-item .icon-box {
    width: 70px; height: 70px; border-radius: 50%; margin: 0 auto 18px; background: rgba(47,191,143,0.15);
    display: flex; align-items: center; justify-content: center; color: var(--color-primary-light);
}
.why-item h3 { color: var(--color-white); font-size: 1.05rem; margin-bottom: 8px; }
.why-item p { color: rgba(255,255,255,0.65); font-size: 0.9rem; }

/* =====================================================================
   11. PROJE / REFERANS GALERİSİ (Image Hover Zoom)
===================================================================== */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.gallery-card {
    border: 0; padding: 0; width: 100%; border-radius: var(--radius); overflow: hidden; position: relative;
    box-shadow: var(--shadow-sm); background: var(--gray-100); color: inherit; text-align: left; cursor: pointer;
    font: inherit; transition: transform var(--transition), box-shadow var(--transition);
}
.gallery-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.gallery-card:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 4px; }
.gallery-img-frame { display: block; overflow: hidden; aspect-ratio: 4/3; }
.gallery-img-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.gallery-card:hover .gallery-img-frame img { transform: scale(1.15); }
.gallery-overlay {
    position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end; padding: 22px;
    background: linear-gradient(180deg, transparent 40%, rgba(8,20,19,0.9));
    opacity: 0; transition: opacity var(--transition); pointer-events: none;
}
.gallery-card:hover .gallery-overlay, .gallery-card:focus-visible .gallery-overlay { opacity: 1; }
.gallery-overlay span { color: var(--color-primary-light); font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.gallery-overlay strong { color: var(--color-white); font: 700 1.05rem/1.35 var(--font-heading); margin-top: 4px; }
.gallery-photo-count {
    position: absolute; top: 14px; z-index: 2; padding: 7px 10px; border-radius: 999px;
    background: rgba(8,20,19,.78); color: var(--color-white); font-size: .72rem; font-weight: 700;
    backdrop-filter: blur(8px); pointer-events: none;
}
.gallery-photo-count { right: 14px; }

/* Tam ekran proje lightbox galerisi */
body.gallery-open { overflow: hidden; }
.project-lightbox { position: fixed; inset: 0; z-index: 3000; display: grid; place-items: center; padding: 24px; }
.project-lightbox[hidden] { display: none; }
.project-lightbox-backdrop { position: absolute; inset: 0; background: rgba(3,10,9,.92); backdrop-filter: blur(10px); }
.project-lightbox-dialog {
    position: relative; z-index: 1; width: min(1180px, 100%); max-height: calc(100vh - 48px); overflow: auto;
    background: #101918; border: 1px solid rgba(255,255,255,.12); border-radius: 18px; box-shadow: 0 30px 80px rgba(0,0,0,.5);
}
.project-lightbox-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; padding: 20px 24px 16px; }
.project-lightbox-header h2 { color: var(--color-white); font-size: clamp(1.15rem, 2.5vw, 1.65rem); margin-top: 3px; }
.project-lightbox-eyebrow { color: var(--color-primary-light); font-size: .76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.project-lightbox-close {
    flex: 0 0 44px; width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.16); border-radius: 50%;
    background: rgba(255,255,255,.08); color: #fff; font: 300 2rem/1 Arial,sans-serif; cursor: pointer;
}
.project-lightbox-close:hover, .project-lightbox-close:focus-visible { background: var(--color-primary); outline: 0; }
.project-lightbox-stage { position: relative; margin: 0 24px; background: #07100f; overflow: hidden; border-radius: 12px; touch-action: pan-y; }
.project-lightbox-stage figure { margin: 0; }
.project-lightbox-stage img { display: block; width: 100%; aspect-ratio: 4/3; max-height: min(68vh, 780px); object-fit: contain; background: #07100f; }
.project-lightbox-stage figcaption { position: absolute; left: 18px; right: 140px; bottom: 16px; color: #fff; font-size: .85rem; text-shadow: 0 2px 8px rgba(0,0,0,.9); }
.project-lightbox-nav {
    position: absolute; top: 50%; z-index: 3; transform: translateY(-50%); width: 48px; height: 64px; border: 0;
    background: rgba(8,20,19,.72); color: #fff; font: 300 2.6rem/1 Arial,sans-serif; cursor: pointer; backdrop-filter: blur(6px);
}
.project-lightbox-nav:hover, .project-lightbox-nav:focus-visible { background: var(--color-primary); outline: 0; }
.project-lightbox-prev { left: 0; border-radius: 0 8px 8px 0; }
.project-lightbox-next { right: 0; border-radius: 8px 0 0 8px; }
.project-lightbox-counter {
    position: absolute; z-index: 2; bottom: 14px; padding: 6px 9px; border-radius: 999px; color: #fff; font-size: .72rem; font-weight: 700;
    background: rgba(8,20,19,.78); backdrop-filter: blur(6px);
}
.project-lightbox-counter { right: 14px; }
.project-lightbox-thumbnails { display: flex; gap: 10px; overflow-x: auto; padding: 16px 24px 22px; scrollbar-width: thin; }
.project-lightbox-thumb { flex: 0 0 104px; padding: 0; border: 2px solid transparent; border-radius: 8px; overflow: hidden; background: #07100f; cursor: pointer; opacity: .62; }
.project-lightbox-thumb img { display: block; width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.project-lightbox-thumb.active { border-color: var(--color-primary); opacity: 1; }
.project-lightbox-thumb:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

/* =====================================================================
   12. ANA SAYFA BİLGİ BANDI
===================================================================== */
.stats-wrap { padding-top: 42px; scroll-margin-top: var(--header-height); }
.stats-band {
    background: linear-gradient(120deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white); border-radius: var(--radius); padding: 42px 30px;
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); text-align: center; gap: 20px;
    position: relative; z-index: 5; box-shadow: var(--shadow);
}
.stat-item strong { display: block; color: var(--color-white); font-family: var(--font-heading); font-size: 2.35rem; }
.stat-item--wide strong { font-size: clamp(1.45rem, 2.2vw, 2rem); line-height: 1.45; }
.stat-item span { font-size: .88rem; color: rgba(255,255,255,.8); }

/* =====================================================================
   13. CTA (ÇAĞRI HAREKETE) ŞERİDİ
===================================================================== */
.cta-band {
    background: linear-gradient(120deg, var(--color-primary-dark), var(--color-primary));
    border-radius: var(--radius); padding: 60px; display: flex; align-items: center; justify-content: space-between;
    gap: 30px; color: var(--color-white); flex-wrap: wrap;
}
.cta-band h2 { color: var(--color-white); font-size: 1.7rem; margin-bottom: 8px; }
.cta-band p { color: rgba(255,255,255,0.8); }

/* =====================================================================
   14. ÜRÜN LİSTELEME (KATEGORİ FİLTRE + GRID + PAGINATION)
===================================================================== */
.filter-bar { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-bottom: 45px; }
.filter-btn {
    padding: 10px 22px; border-radius: 50px; border: 1px solid var(--gray-200); background: var(--color-white);
    font-weight: 600; font-size: 0.88rem; color: var(--gray-800); transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card { background: var(--color-white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: box-shadow var(--transition), transform var(--transition); }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-6px); }
.product-card .gallery-img-frame { aspect-ratio: 16/11; }
.product-card-body { padding: 22px; }
.product-card-body .tag { color: var(--color-primary); font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; }
.product-card-body h3 { font-size: 1.12rem; margin: 8px 0 10px; }
.product-card-body p { color: var(--gray-600); font-size: 0.9rem; margin-bottom: 16px; }

/* Sayfalama (pagination) tasarımı */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 55px; flex-wrap: wrap; }
.pagination a, .pagination span {
    min-width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
    border-radius: 50%; font-weight: 600; font-size: 0.92rem; color: var(--gray-800);
    border: 1px solid var(--gray-200); transition: all var(--transition);
}
.pagination a:hover { background: var(--gray-100); border-color: var(--gray-100); }
.pagination .active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }
.pagination .disabled { opacity: .4; pointer-events: none; }

/* Boş durum (Empty State) illüstrasyonu */
.empty-state { text-align: center; padding: 70px 20px; color: var(--gray-600); }
.empty-state svg { margin-bottom: 22px; opacity: .9; }
.empty-state h3 { color: var(--gray-800); margin-bottom: 8px; }

/* =====================================================================
   15. ÜRÜN DETAY SAYFASI
===================================================================== */
.product-detail-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 55px; align-items: flex-start; }
.product-detail-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.product-detail-info h1 { font-size: 1.9rem; margin-bottom: 16px; }
.product-detail-info p { color: var(--gray-600); margin-bottom: 24px; }
.quote-card { background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 28px; }
.quote-card h2 { font-size: 1.25rem; margin-bottom: 8px; }
.quote-card p.hint { color: var(--gray-600); font-size: 0.88rem; margin-bottom: 20px; }

.stacked-actions { display: grid; gap: 12px; }
.btn-whatsapp { background: #178a46; color: var(--color-white); }
.btn-whatsapp:hover { background: #126d38; transform: translateY(-2px); }
.btn-secondary { background: var(--color-white); color: var(--color-primary); border: 1px solid var(--gray-200); }
.product-content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.content-card { min-width: 0; padding: 30px; background: var(--color-white); border: 1px solid var(--gray-200); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.content-card h2 { font-size: 1.25rem; margin-bottom: 14px; }
.content-card p { color: var(--gray-600); }
.feature-list { display: grid; gap: 10px; }
.feature-list li { position: relative; padding-left: 24px; }
.feature-list li::before { content: '✓'; position: absolute; left: 0; color: var(--color-primary-light); font-weight: 800; }

/* =====================================================================
   17. İLETİŞİM SAYFASI (YETKİLİ KARTLARI + BİLGİ KARTLARI + HARİTA)
===================================================================== */

/* --- 17.1 Ana sayfadaki iletişim kartları (index.php) --- */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 55px; }
.contact-card { background: var(--color-white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 30px; text-align: center; transition: all var(--transition); }
.contact-card:hover { border-color: transparent; box-shadow: var(--shadow); transform: translateY(-6px); }
.contact-card .icon-box { width: 56px; height: 56px; border-radius: 50%; background: rgba(47,191,143,0.12); color: var(--color-primary); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.contact-card h4 { margin-bottom: 8px; }
.contact-card a:not(.btn), .contact-card p { color: var(--gray-600); font-size: 0.93rem; }

/* --- 17.2 Yetkili kartları: ünvan rozeti + telefon + WhatsApp --- */
.person-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; margin-bottom: 26px; }
.person-card {
    position: relative; min-width: 0; padding: 34px 30px 30px; text-align: center;
    background: var(--color-white); border: 1px solid var(--gray-200); border-radius: var(--radius);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.person-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.person-role {
    display: inline-block; margin-bottom: 18px; padding: 6px 16px; border-radius: 50px;
    background: rgba(47,191,143,0.12); color: var(--color-primary);
    font-size: 0.74rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase;
}
.person-avatar {
    width: 68px; height: 68px; margin: 0 auto 16px; border-radius: 50%;
    display: grid; place-items: center; color: var(--color-white);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
}
.person-card h3 { font-size: 1.22rem; margin-bottom: 20px; }
.person-phone, .person-wa {
    display: flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13px 18px; border-radius: 50px; font-weight: 600; overflow-wrap: anywhere;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}
.person-phone {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: var(--color-white); font-size: 1rem; letter-spacing: .02em;
    box-shadow: 0 8px 20px rgba(47, 191, 143, 0.28);
}
.person-phone:hover { transform: translateY(-2px); }
.person-wa { margin-top: 10px; background: var(--gray-100); color: #178a46; font-size: 0.88rem; }
.person-wa:hover { background: #178a46; color: var(--color-white); }

/* --- 17.3 Kurumsal bilgi kartları --- */
.info-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.info-card {
    min-width: 0; padding: 26px; border: 1px solid var(--gray-200); border-radius: var(--radius);
    background: var(--gray-50); transition: border-color var(--transition), background var(--transition);
}
.info-card:hover { background: var(--color-white); border-color: var(--gray-100); }
.info-icon {
    width: 44px; height: 44px; margin-bottom: 14px; border-radius: var(--radius-sm);
    display: grid; place-items: center; background: var(--color-white);
    border: 1px solid var(--gray-200); color: var(--color-primary);
}
.info-card h4 { font-size: 0.98rem; margin-bottom: 8px; }
.info-card p { color: var(--gray-600); font-size: 0.93rem; line-height: 1.7; overflow-wrap: anywhere; }
.info-card p a { color: var(--color-primary); font-weight: 600; }
.info-card p a:hover { text-decoration: underline; }
.info-links a { display: block; }  /* e-posta adresleri alt alta */
.review-invitation {
    margin-top: 38px; padding: 34px 24px; border: 1px solid var(--gray-200);
    border-radius: var(--radius); background: var(--gray-50); text-align: center;
}
.review-invitation h2 { margin-bottom: 10px; font-size: 1.55rem; }
.review-invitation p { margin-bottom: 18px; color: var(--gray-600); }
.review-invitation .btn:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 4px; }

/* --- 17.4 Konum: tam genişlik harita şeridi --- */
.map-section { display: block; background: var(--gray-50); }
.map-toolbar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; padding-top: 28px; padding-bottom: 28px; }
.map-toolbar h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
.map-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.map-actions .btn { min-height: 48px; }
.map-actions .btn:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 4px; }
.map-actions svg { flex-shrink: 0; }
.map-full { display: block; width: 100%; height: 460px; border: 0; filter: grayscale(0.15); }

/* =====================================================================
   18. FOOTER
===================================================================== */
.site-footer {
    background: var(--color-black);
    color: rgba(255,255,255,0.72);
    font-size: 0.92rem;
    /* Sabit WhatsApp/yukarı-çık butonlarının alt şeridi kapatmaması için */
    padding-bottom: env(safe-area-inset-bottom);
}

/* --- 18.1 Üst şerit: hizmet rozetleri (tam genişlik, yatay) --- */
.footer-top { border-bottom: 1px solid rgba(255,255,255,0.09); }
.footer-badges {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px; padding: 26px 0;
}
.footer-badges li { display: flex; align-items: center; gap: 14px; min-width: 0; }
.footer-badges li + li { border-left: 1px solid rgba(255,255,255,0.09); padding-left: 18px; }
.footer-badges svg { flex-shrink: 0; color: var(--color-primary-light); }
.footer-badges span { display: flex; flex-direction: column; min-width: 0; font-size: 0.84rem; line-height: 1.45; }
.footer-badges strong { color: var(--color-white); font-size: 0.95rem; font-weight: 600; }

/* --- 18.2 Link grid --- */
.footer-grid {
    display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr) minmax(0, 1.1fr) minmax(0, 1.3fr);
    gap: 40px; padding: 50px 0;
}
.footer-col { min-width: 0; }

/* Marka kolonu */
.footer-logo { display: block; margin-bottom: 18px; height: auto; filter: brightness(0) invert(1); }
.footer-about { max-width: 42ch; line-height: 1.75; margin: 0; }
.footer-service-link {
    display: inline-block; margin-top: 14px;
    color: var(--color-primary-light); font-weight: 600; transition: opacity var(--transition);
}
.footer-service-link:hover { opacity: .8; }
.footer-col h4 {
    position: relative; color: var(--color-white); font-size: 1rem;
    margin-bottom: 22px; padding-bottom: 12px;
}
.footer-col h4::after {
    content: ""; position: absolute; left: 0; bottom: 0;
    width: 34px; height: 2px; border-radius: 2px; background: var(--color-primary-light);
}
.footer-links li + li { margin-top: 11px; }
.footer-links a { display: inline-block; transition: color var(--transition), transform var(--transition); }
.footer-links a:hover { color: var(--color-primary-light); transform: translateX(4px); }

/* İletişim: birim etiketi üstte, değer altta */
.footer-contact { font-style: normal; display: grid; gap: 16px; }
.footer-contact-item { display: flex; gap: 12px; align-items: flex-start; min-width: 0; }
.footer-contact-item > svg { flex-shrink: 0; margin-top: 4px; color: var(--color-primary-light); }
.footer-contact-item > div { min-width: 0; }
.footer-contact-label {
    display: block; font-size: 0.72rem; letter-spacing: .08em; text-transform: uppercase;
    color: rgba(255,255,255,0.45); margin-bottom: 3px;
}
.footer-contact-value { display: block; color: var(--color-white); line-height: 1.55; overflow-wrap: anywhere; }
a.footer-contact-value { transition: color var(--transition); }
a.footer-contact-value:hover { color: var(--color-primary-light); }

.footer-social { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.footer-social a {
    width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.08);
    display: flex; align-items: center; justify-content: center; transition: all var(--transition);
}
.footer-social a:hover { background: var(--color-primary-light); color: var(--color-black); }

/* --- 18.3 Alt şerit --- */
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.09); padding: 20px 0; }
.footer-bottom-inner {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 10px 26px; font-size: 0.82rem;
}
.footer-bottom-inner > * { min-width: 0; margin: 0; overflow-wrap: anywhere; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-legal a:hover, .footer-credit a:hover { color: var(--color-primary-light); }
.footer-credit a { color: var(--color-primary-light); font-weight: 600; }
.footer-credit a:hover { text-decoration: underline; }

/* =====================================================================
   19. YÜZEN BUTONLAR: Yukarı Çık + WhatsApp
===================================================================== */
#scroll-top {
    position: fixed; bottom: 28px; right: 28px; width: 48px; height: 48px; border-radius: 50%;
    background: var(--color-primary); color: var(--color-white); display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(10px); transition: all var(--transition);
    z-index: 900;
}
#scroll-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
#scroll-top:hover { background: var(--color-primary-dark); }

.whatsapp-float {
    position: fixed; bottom: 28px; left: 28px; width: 58px; height: 58px; border-radius: 50%;
    background: #25D366; color: var(--color-white);
    display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow);
    z-index: 900; animation: pulse-wa 2.4s infinite;
}
@keyframes pulse-wa {
    0% { box-shadow: 0 0 0 0 rgba(37,211,102,0.5); }
    70% { box-shadow: 0 0 0 14px rgba(37,211,102,0); }
    100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); }
}

/* =====================================================================
   20. SAYFA BAŞLIK BANDI (İç sayfalar için - Kurumsal, Ürünler, İletişim vb.)
===================================================================== */
.page-hero {
    background: linear-gradient(120deg, rgba(8,47,45,0.94), rgba(14,74,71,0.9)),
                url('../img/site/ic-sayfa-hero-prefabrik.jpg') center/cover;
    padding: 80px 0; color: var(--color-white); text-align: center;
}
.page-hero h1 { color: var(--color-white); font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 10px; }
.page-hero p { color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto; }
.page-hero .eyebrow { background: rgba(255,255,255,.15); color: var(--color-white); }
.two-column-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three-column-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.team-grid { max-width: 800px; margin: 0 auto; }
.team-card { text-align: center; }
.team-icon { margin: 0 auto 20px; }
.team-role { margin-bottom: 14px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.process-step { padding: 30px; border: 1px solid var(--gray-200); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.process-step > span { display: inline-block; color: var(--color-primary-light); font: 800 1.5rem var(--font-heading); margin-bottom: 14px; }
.process-step h3 { margin-bottom: 8px; }
.process-step p { color: var(--gray-600); }
.shipment-summary { background: var(--gray-50); }
.shipment-actions { margin-top: 24px; }

/* =====================================================================
   21. RESPONSIVE (MOBİL / TABLET UYUMU)
===================================================================== */
@media (max-width: 1024px) {
    .services-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid, .product-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 30px; }
    .footer-about { max-width: none; }
    .about-grid, .product-detail-grid { grid-template-columns: 1fr; }
    .contact-cards { grid-template-columns: 1fr; }
    .product-content-grid { grid-template-columns: 1fr; }
    .info-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .about-img-badge { position: static; margin-top: 18px; display: inline-block; }
}

@media (max-width: 1080px) {
    .topbar-item-email { display: none; }
    .topbar-service { font-size: .75rem; text-align: right; }
    .hamburger { display: flex; }
    .nav-menu {
        position: fixed; top: 0; right: 0; height: 100vh; width: min(320px, 85%); background: var(--color-white);
        flex-direction: column; align-items: flex-start; padding: 100px 30px; gap: 6px; transform: translateX(105%); transition: transform var(--transition);
        z-index: 1100; overflow-y: auto;
    }
    .nav-menu.open { transform: translateX(0); box-shadow: -10px 0 30px rgba(0,0,0,0.15); }
    .nav-menu > li { width: 100%; }
    .nav-menu > li > a { display: block; padding: 14px 0; border-bottom: 1px solid var(--gray-100); }
    .nav-parent-row { width: 100%; border-bottom: 1px solid var(--gray-100); }
    .nav-parent-row > a { flex: 1; padding: 14px 0; }
    .dropdown-toggle { display: grid; place-items: center; flex: 0 0 44px; }
    .has-dropdown .dropdown {
        position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; display: none;
        padding: 0 0 0 14px; margin-top: 6px;
    }
    .has-dropdown.open .dropdown { display: block; }
    .nav-cta { display: none; }
    .mobile-nav-cta { display: block; margin-top: 14px; }
    .mobile-nav-cta > a { padding: 13px 16px !important; border: 0 !important; border-radius: 8px; background: #178a46; color: #fff !important; text-align: center; }
    .hero { min-height: max(600px, calc(100svh - 128px)); background-position: 58% center; }
}

@media (max-width: 640px) {
    .section { padding: 60px 0; }
    .services-grid, .why-grid, .gallery-grid, .product-grid, .two-column-grid, .process-grid { grid-template-columns: 1fr; }
    .gallery-overlay { opacity: 1; padding: 18px; background: linear-gradient(180deg, transparent 46%, rgba(8,20,19,.92)); }
    .project-lightbox { padding: 0; place-items: stretch; }
    .project-lightbox-dialog { width: 100%; max-height: 100vh; min-height: 100vh; border: 0; border-radius: 0; display: flex; flex-direction: column; }
    .project-lightbox-header { padding: 14px 16px 12px; }
    .project-lightbox-stage { margin: 0; border-radius: 0; }
    .project-lightbox-stage img { max-height: 64vh; }
    .project-lightbox-stage figcaption { left: 14px; right: 14px; bottom: 52px; font-size: .78rem; }
    .project-lightbox-nav { width: 42px; height: 58px; }
    .project-lightbox-counter { right: 12px; bottom: 12px; }
    .project-lightbox-thumbnails { padding: 14px 16px 18px; margin-top: auto; }
    .project-lightbox-thumb { flex-basis: 86px; }
    /* Footer mobil: rozetler alt alta, link kolonları 2'li, marka/iletişim tam genişlik */
    .footer-badges { grid-template-columns: 1fr; gap: 14px; padding: 24px 0; }
    .footer-badges li + li { border-left: 0; padding-left: 0; padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.09); }
    .footer-about { max-width: none; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; padding: 40px 0; }
    .footer-col-links .footer-links, .footer-col-products .footer-links {
        display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px 18px;
    }
    .footer-col-links .footer-links li + li, .footer-col-products .footer-links li + li { margin-top: 0; }
    .footer-col h4 { margin-bottom: 18px; }
    .cta-band { flex-direction: column; text-align: center; padding: 40px 26px; }
    .cta-actions, .hero-actions { width: 100%; justify-content: center; }
    .cta-actions .btn, .hero-actions .btn, .stacked-actions .btn { width: 100%; }
    .hero { min-height: max(620px, calc(100svh - 128px)); background-position: 62% center; }
    .hero-inner { padding-top: 58px; padding-bottom: 112px; }
    .hero { background-image: linear-gradient(180deg, rgba(8,47,45,.9), rgba(14,74,71,.8)), url('../img/site/hero-efe-beton-prefabrik.jpg'); }
    .hero-trust { justify-content: center; gap: 8px 18px; margin-top: 22px; font-size: .86rem; }
    .stats-band { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 34px 20px; }
    .stat-item:last-child { grid-column: 1 / -1; }
    .about-img-badge { position: static; margin-top: 18px; display: inline-block; }
    .filter-bar { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 8px; }
    .filter-btn { flex: 0 0 auto; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }
    .footer-legal { justify-content: center; }
    .breadcrumb-inner { overflow-wrap: anywhere; }
    .contact-card, .content-card, .process-step { padding: 24px 20px; }
    .person-grid, .info-grid { grid-template-columns: 1fr; }
    .person-card { padding: 28px 22px 26px; }
    .map-toolbar { align-items: stretch; }
    .map-actions { width: 100%; }
    .map-actions .btn { width: 100%; }
    .map-full { height: 340px; }
    #scroll-top { right: 16px; bottom: 16px; }
    .whatsapp-float { left: 16px; bottom: 16px; }
}

@media (max-width: 430px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .topbar-inner { padding-left: 16px; padding-right: 16px; flex-wrap: wrap; justify-content: center; gap: 4px; }
    .topbar-right { width: 100%; flex-wrap: wrap; justify-content: center; gap: 4px 14px; }
    .topbar-service { width: 100%; justify-content: center; text-align: center; font-size: .7rem; letter-spacing: .02em; }
    .topbar-social { padding-left: 0; border-left: 0; }
    .navbar { padding-left: 16px; padding-right: 16px; }
    .navbar-brand img { height: 52px; }
    .nav-menu { width: min(310px, 90vw); padding: 88px 22px 28px; }
    .hero { min-height: max(650px, calc(100svh - 143px)); background-position: 64% center; }
    .hero-inner { padding-top: 42px; padding-bottom: 108px; }
    .hero h1 { font-size: clamp(2rem, 10vw, 2.7rem); overflow-wrap: anywhere; }
    .hero-scroll-indicator { bottom: 18px; }
    .section-head { margin-bottom: 36px; }
    .page-hero { padding: 58px 0; }
    .cta-band { padding: 34px 20px; }
}

@media (max-width: 340px) {
    .btn { padding-left: 18px; padding-right: 18px; }
    .hero-inner { padding-top: 34px; padding-bottom: 102px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .hero-scroll-mouse span, .hero-scroll-indicator svg { animation: none; }
}