:root {
    --birincil: #1a3a5c;
    --birincil-koyu: #122840;
    --ikincil: #c8a951;
    --ikincil-acik: #d4bc72;
    --metin: #2c3e50;
    --metin-acik: #6c757d;
    --arkaplan: #ffffff;
    --arkaplan-acik: #f8f9fb;
    --kenar: #e9ecef;
    --golge: 0 4px 24px rgba(26, 58, 92, 0.08);
    --golge-hover: 0 8px 32px rgba(26, 58, 92, 0.15);
    --gecis: all 0.3s ease;
    --font: 'Inter', sans-serif;
    --font-baslik: 'Playfair Display', serif;
}

* { box-sizing: border-box; }

body {
    font-family: var(--font);
    color: var(--metin);
    line-height: 1.7;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-baslik);
    color: var(--birincil);
    font-weight: 700;
}

a { color: var(--birincil); text-decoration: none; transition: var(--gecis); }
a:hover { color: var(--ikincil); }

img { max-width: 100%; height: auto; }

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--arkaplan);
    transition: var(--gecis);
}

.site-header.scrolled {
    box-shadow: var(--golge);
}

.site-header.scrolled .ust-bar { display: none; }

.ust-bar {
    background: var(--birincil);
    color: rgba(255,255,255,0.85);
    padding: 8px 0;
    font-size: 0.875rem;
}

.ust-bar a { color: rgba(255,255,255,0.85); }
.ust-bar a:hover { color: var(--ikincil); }

.sosyal-linkler a {
    display: inline-flex;
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    color: #fff;
    margin-left: 6px;
    font-size: 0.9rem;
}

.sosyal-linkler a:hover { background: var(--ikincil); color: #fff; }

.navbar { padding: 12px 0; }
.navbar-brand img { transition: var(--gecis); }

.nav-link {
    font-weight: 500;
    color: var(--metin) !important;
    padding: 8px 16px !important;
    position: relative;
}

.nav-link.active,
.nav-link:hover { color: var(--birincil) !important; }

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--ikincil);
}

.navbar-toggler { border-color: var(--birincil); }
.navbar-toggler-icon { filter: invert(18%) sepia(30%) saturate(800%) hue-rotate(175deg); }

/* Buttons */
.btn-birincil {
    background: var(--birincil);
    border-color: var(--birincil);
    color: #fff;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 4px;
    transition: var(--gecis);
}

.btn-birincil:hover {
    background: var(--birincil-koyu);
    border-color: var(--birincil-koyu);
    color: #fff;
    transform: translateY(-1px);
}

.btn-outline-birincil {
    border: 2px solid var(--birincil);
    color: var(--birincil);
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 4px;
}

.btn-outline-birincil:hover {
    background: var(--birincil);
    color: #fff;
}

.btn-beyaz {
    background: #fff;
    color: var(--birincil);
    font-weight: 600;
    border: none;
}

.btn-beyaz:hover { background: var(--arkaplan-acik); color: var(--birincil); }

.btn-outline-beyaz {
    border: 2px solid rgba(255,255,255,0.7);
    color: #fff;
    font-weight: 600;
}

.btn-outline-beyaz:hover { background: #fff; color: var(--birincil); }

main { padding-top: 120px; }
.site-header.scrolled + main,
.site-header:not(:has(.ust-bar)) + main { padding-top: 80px; }

/* Hero */
.hero-slider { margin-top: -120px; }
.site-header.scrolled ~ main .hero-slider { margin-top: -80px; }

.hero-slide {
    min-height: 85vh;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,58,92,0.85) 0%, rgba(26,58,92,0.5) 100%);
}

.hero-icerik {
    position: relative;
    z-index: 2;
    max-width: 700px;
    color: #fff;
    padding: 80px 0;
}

.hero-etiket {
    display: inline-block;
    background: var(--ikincil);
    color: var(--birincil);
    padding: 6px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    border-radius: 2px;
}

.hero-icerik h1 {
    color: #fff;
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-icerik p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.carousel-indicators [data-bs-target] {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid #fff;
    background: transparent;
}

.carousel-indicators .active { background: var(--ikincil); border-color: var(--ikincil); }

/* Sections */
.bolum { padding: 80px 0; }
.bg-acik { background: var(--arkaplan-acik); }

.bolum-baslik .alt-baslik {
    display: block;
    color: var(--ikincil);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.bolum-baslik h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); margin-bottom: 16px; }

/* Hakkimizda */
.hakkimizda-gorsel { position: relative; }

.deneyim-kutusu {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--birincil);
    color: #fff;
    padding: 24px 32px;
    text-align: center;
    border-radius: 4px;
    box-shadow: var(--golge);
}

.deneyim-sayi {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-baslik);
    color: var(--ikincil);
}

.deneyim-metin { font-size: 0.9rem; opacity: 0.9; }

/* Istatistik */
.istatistik-bolum { background: var(--birincil); padding: 60px 0; }

.istatistik-kart {
    text-align: center;
    color: #fff;
    padding: 20px;
}

.istatistik-kart i {
    font-size: 2.5rem;
    color: var(--ikincil);
    margin-bottom: 12px;
    display: block;
}

.istatistik-deger {
    display: block;
    font-size: 2.25rem;
    font-weight: 700;
    font-family: var(--font-baslik);
}

.istatistik-baslik { font-size: 0.95rem; opacity: 0.85; }

/* Hizmet Kart */
.hizmet-kart {
    background: #fff;
    padding: 32px;
    border-radius: 8px;
    box-shadow: var(--golge);
    height: 100%;
    transition: var(--gecis);
    border: 1px solid transparent;
}

.hizmet-kart:hover {
    transform: translateY(-4px);
    box-shadow: var(--golge-hover);
    border-color: var(--ikincil);
}

.hizmet-ikon {
    width: 64px;
    height: 64px;
    background: var(--arkaplan-acik);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.hizmet-ikon i { font-size: 1.75rem; color: var(--birincil); }

.hizmet-kart h3 { font-size: 1.25rem; margin-bottom: 12px; }

.hizmet-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: var(--birincil);
    margin-top: 12px;
}

.hizmet-link:hover { color: var(--ikincil); gap: 10px; }

.hizmet-gorsel {
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 20px;
    aspect-ratio: 16/10;
}

.hizmet-gorsel img { width: 100%; height: 100%; object-fit: cover; }

/* Proje Kart */
.proje-kart {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--golge);
    transition: var(--gecis);
    height: 100%;
}

.proje-kart:hover { box-shadow: var(--golge-hover); transform: translateY(-3px); }

.proje-gorsel {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.proje-gorsel img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.proje-kart:hover .proje-gorsel img { transform: scale(1.05); }

.proje-durum {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 2px;
    color: #fff;
}

.durum-tamam { background: #28a745; }
.durum-devam { background: var(--ikincil); color: var(--birincil); }
.durum-plan { background: #6c757d; }

.proje-icerik { padding: 24px; }

.proje-kategori {
    display: inline-block;
    color: var(--ikincil);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.proje-icerik h3 { font-size: 1.15rem; margin-bottom: 8px; }
.proje-icerik h3 a { color: var(--birincil); }
.proje-icerik h3 a:hover { color: var(--ikincil); }

.proje-konum { color: var(--metin-acik); font-size: 0.9rem; margin: 0; }
.proje-konum i { color: var(--ikincil); }

/* Referans */
.referans-logo {
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--gecis);
}

.referans-logo:hover { filter: none; opacity: 1; }
.referans-logo img { max-height: 50px; object-fit: contain; }

/* Yorum */
.yorum-kart {
    background: #fff;
    padding: 32px;
    border-radius: 8px;
    box-shadow: var(--golge);
    height: 100%;
    border-left: 4px solid var(--ikincil);
}

.yorum-yildiz { color: var(--ikincil); margin-bottom: 16px; }
.yorum-metin { font-style: italic; margin-bottom: 20px; color: var(--metin); }
.yorum-yazar strong { display: block; color: var(--birincil); }
.yorum-yazar span { font-size: 0.85rem; color: var(--metin-acik); }

/* Haber */
.haber-kart {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--golge);
    height: 100%;
    transition: var(--gecis);
}

.haber-kart:hover { box-shadow: var(--golge-hover); }

.haber-gorsel-link {
    display: block;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.haber-gorsel-link img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.haber-kart:hover .haber-gorsel-link img { transform: scale(1.05); }

.haber-icerik { padding: 24px; }
.haber-icerik time { color: var(--ikincil); font-size: 0.85rem; font-weight: 600; }
.haber-icerik h3 { font-size: 1.1rem; margin: 8px 0 12px; }
.haber-icerik h3 a { color: var(--birincil); }
.haber-devam { font-weight: 600; color: var(--birincil); }

/* CTA */
.cta-bolum { padding: 0 0 80px; }

.cta-kutu {
    background: linear-gradient(135deg, var(--birincil) 0%, var(--birincil-koyu) 100%);
    color: #fff;
    padding: 48px;
    border-radius: 8px;
}

.cta-kutu h2 { color: #fff; margin-bottom: 12px; }
.cta-kutu p { opacity: 0.9; margin: 0; }

/* Iletisim Mini */
.iletisim-mini-kart {
    text-align: center;
    padding: 32px;
    background: #fff;
    border-radius: 8px;
    box-shadow: var(--golge);
}

.iletisim-mini-kart i {
    font-size: 2rem;
    color: var(--ikincil);
    margin-bottom: 12px;
}

.iletisim-mini-kart h4 { font-size: 1rem; margin-bottom: 8px; }
.iletisim-mini-kart p { margin: 0; color: var(--metin-acik); }
.iletisim-mini-kart a { color: var(--metin-acik); }
.iletisim-mini-kart a:hover { color: var(--birincil); }

.harita-wrapper iframe { display: block; filter: grayscale(20%); }

/* Sayfa Banner */
.sayfa-banner {
    background: var(--birincil);
    color: #fff;
    padding: 48px 0;
    margin-top: -120px;
    padding-top: 168px;
}

.sayfa-banner-kisa { padding-bottom: 32px; }

.sayfa-banner h1 { color: #fff; margin-bottom: 12px; }

.breadcrumb { margin: 0; }
.breadcrumb-item a { color: rgba(255,255,255,0.7); }
.breadcrumb-item.active { color: var(--ikincil); }
.breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.5); }

/* Sayfa Icerik */
.sayfa-icerik h3 { margin-top: 32px; margin-bottom: 16px; }
.sayfa-icerik ul { padding-left: 20px; }
.sayfa-icerik li { margin-bottom: 8px; }

.yan-panel {
    background: var(--arkaplan-acik);
    padding: 32px;
    border-radius: 8px;
    position: sticky;
    top: 100px;
}

.yan-liste { list-style: none; padding: 0; margin: 0; }
.yan-liste li {
    padding: 10px 0;
    border-bottom: 1px solid var(--kenar);
    display: flex;
    align-items: center;
    gap: 10px;
}

.yan-liste i { color: var(--ikincil); }

.yan-menu { list-style: none; padding: 0; }
.yan-menu li { border-bottom: 1px solid var(--kenar); }
.yan-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 0;
    color: var(--metin);
}

.yan-menu a:hover { color: var(--ikincil); }

/* Form */
.form-panel {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--golge);
}

.form-panel h3 { margin-bottom: 24px; }

.form-control:focus,
.form-select:focus {
    border-color: var(--birincil);
    box-shadow: 0 0 0 0.2rem rgba(26, 58, 92, 0.15);
}

.form-sonuc .alert { margin: 0; }

.iletisim-liste { list-style: none; padding: 0; }
.iletisim-liste li {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--kenar);
}

.iletisim-liste i {
    font-size: 1.5rem;
    color: var(--ikincil);
    flex-shrink: 0;
    margin-top: 4px;
}

.iletisim-liste strong { display: block; color: var(--birincil); margin-bottom: 4px; }
.iletisim-liste p { margin: 0; color: var(--metin-acik); }

.kariyer-avantaj { list-style: none; padding: 0; margin-top: 24px; }
.kariyer-avantaj li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.kariyer-avantaj i { color: var(--ikincil); }

/* Galeri */
.galeri-kart {
    display: block;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 1;
}

.galeri-kart img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.galeri-kart:hover img { transform: scale(1.08); }

.galeri-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(transparent 50%, rgba(26,58,92,0.8));
    display: flex;
    align-items: flex-end;
    padding: 16px;
    opacity: 0;
    transition: var(--gecis);
}

.galeri-kart:hover .galeri-overlay { opacity: 1; }
.galeri-overlay span { color: #fff; font-weight: 600; font-size: 0.9rem; }

.galeri-thumb {
    display: block;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.galeri-thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--gecis); }
.galeri-thumb:hover img { transform: scale(1.05); }

/* Proje Detay */
.proje-bilgi-panel {
    background: var(--arkaplan-acik);
    padding: 32px;
    border-radius: 8px;
    position: sticky;
    top: 100px;
}

.proje-bilgi-liste { list-style: none; padding: 0; }
.proje-bilgi-liste li {
    padding: 12px 0;
    border-bottom: 1px solid var(--kenar);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.proje-bilgi-liste i { color: var(--ikincil); margin-top: 3px; }

.proje-ozellik-liste { list-style: none; padding: 0; }
.proje-ozellik-liste li { padding: 6px 0; display: flex; gap: 8px; }
.proje-ozellik-liste i { color: var(--ikincil); }

.teknik-liste dt { font-weight: 600; color: var(--birincil); margin-top: 8px; }
.teknik-liste dd { margin: 0; color: var(--metin-acik); }

.proje-kapak-gorsel { position: relative; }

/* SSS */
.sss-accordion .accordion-item {
    border: none;
    margin-bottom: 8px;
    border-radius: 8px !important;
    overflow: hidden;
}

.sss-accordion .accordion-button {
    background: #fff;
    font-weight: 600;
    color: var(--birincil);
    box-shadow: var(--golge);
}

.sss-accordion .accordion-button:not(.collapsed) {
    background: var(--birincil);
    color: #fff;
}

/* Pagination */
.pagination .page-link { color: var(--birincil); border-color: var(--kenar); }
.pagination .page-item.active .page-link { background: var(--birincil); border-color: var(--birincil); }

/* Footer */
.site-footer { background: var(--birincil-koyu); color: rgba(255,255,255,0.8); }

.footer-ust { padding: 64px 0 48px; }

.footer-ust h5 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 20px;
    font-family: var(--font);
}

.footer-aciklama { font-size: 0.95rem; line-height: 1.8; }

.footer-sosyal a {
    display: inline-flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: #fff;
    margin-right: 8px;
    margin-top: 16px;
}

.footer-sosyal a:hover { background: var(--ikincil); color: var(--birincil); }

.footer-menu { list-style: none; padding: 0; }
.footer-menu li { margin-bottom: 10px; }
.footer-menu a { color: rgba(255,255,255,0.7); font-size: 0.95rem; }
.footer-menu a:hover { color: var(--ikincil); }

.footer-iletisim { list-style: none; padding: 0; }
.footer-iletisim li {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 0.95rem;
}

.footer-iletisim i { color: var(--ikincil); flex-shrink: 0; margin-top: 3px; }
.footer-iletisim a { color: rgba(255,255,255,0.7); }
.footer-iletisim a:hover { color: var(--ikincil); }

.footer-alt {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    font-size: 0.875rem;
}

/* Yukari Buton */
.yukari-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--birincil);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--gecis);
    z-index: 999;
    box-shadow: var(--golge);
}

.yukari-btn.goster { opacity: 1; visibility: visible; }
.yukari-btn:hover { background: var(--ikincil); color: var(--birincil); }

/* 404 */
.hata-sayfa { padding: 120px 0; }
.hata-kod {
    font-size: 8rem;
    font-weight: 700;
    color: var(--ikincil);
    font-family: var(--font-baslik);
    line-height: 1;
    display: block;
}

.son-haber-liste { list-style: none; padding: 0; }
.son-haber-liste li { border-bottom: 1px solid var(--kenar); padding: 12px 0; }
.son-haber-liste a { color: var(--metin); font-weight: 500; }
.son-haber-liste .tarih { display: block; font-size: 0.8rem; color: var(--ikincil); margin-bottom: 4px; }

/* Lightbox */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.9);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--gecis);
}

.lightbox-overlay.active { opacity: 1; visibility: visible; }
.lightbox-overlay img { max-width: 90%; max-height: 90vh; border-radius: 4px; }
.lightbox-kapat {
    position: absolute;
    top: 20px;
    right: 20px;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    background: none;
    border: none;
}

/* Responsive */
@media (max-width: 991px) {
    main { padding-top: 80px; }
    .hero-slider { margin-top: -80px; }
    .sayfa-banner { margin-top: -80px; padding-top: 128px; }
    .hero-slide { min-height: 70vh; }
    .bolum { padding: 60px 0; }
    .deneyim-kutusu { right: 0; bottom: -10px; }
    .yan-panel, .proje-bilgi-panel { position: static; }
}

@media (max-width: 767px) {
    .cta-kutu { padding: 32px 24px; text-align: center; }
    .cta-kutu .btn { display: block; width: 100%; margin: 8px 0 !important; }
    .form-panel { padding: 24px; }
}