/* ============================================
   VENUS ARAŞTIRMA - ANA CSS DOSYASI
   Renk Paleti: Turuncu Tema
   ============================================ */

:root {
    --primary: #FF6B00;
    --primary-dark: #E65C00;
    --primary-light: #FF8C00;
    --primary-xlight: #FFF3E8;
    --secondary: #1a1a2e;
    --secondary-dark: #0f0f1a;
    --white: #ffffff;
    --light: #f8f9fa;
    --dark: #1a1a1a;
    --gray: #6c757d;
    --gray-light: #e9ecef;
    --text: #444444;
    --shadow: 0 5px 30px rgba(255, 107, 0, 0.12);
    --shadow-dark: 0 10px 40px rgba(0, 0, 0, 0.15);
    --radius: 12px;
    --transition: all 0.3s ease;
}

/* ---- GENEL ---- */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Poppins', sans-serif;
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}
html { scroll-behavior: smooth; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; }
h1,h2,h3,h4,h5,h6 { font-weight: 700; color: var(--dark); line-height: 1.3; }
p { margin-bottom: 1rem; }

/* ---- YÜKLENME EKRANı ---- */
#loader {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    background: white; z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    transition: opacity 0.5s ease;
}
#loader .spinner {
    width: 50px; height: 50px;
    border: 4px solid var(--primary-xlight);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- ÜST BAR ---- */
.top-bar {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: white;
    padding: 8px 0;
    font-size: 0.85rem;
}
.top-bar a { color: white; opacity: 0.9; }
.top-bar a:hover { opacity: 1; text-decoration: underline; }

/* ---- NAVBAR ---- */
#mainNav {
    background: white !important;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
    padding: 12px 0;
}
#mainNav.scrolled {
    border-bottom-color: var(--primary);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1) !important;
}
.navbar-brand { padding: 0; }
.logo-wrapper { display: flex; flex-direction: column; line-height: 1; }
.logo-venus {
    font-size: 1.8rem; font-weight: 800;
    color: var(--primary);
    letter-spacing: 2px;
}
.logo-arastirma {
    font-size: 0.7rem; font-weight: 500;
    color: var(--secondary);
    letter-spacing: 4px;
    text-transform: uppercase;
}
.nav-link {
    font-weight: 500; font-size: 0.95rem;
    color: var(--dark) !important;
    padding: 8px 16px !important;
    border-radius: 8px;
    position: relative;
}
.nav-link::after {
    content: ''; position: absolute;
    bottom: 0; left: 16px; right: 16px;
    height: 2px; background: var(--primary);
    transform: scaleX(0); transition: var(--transition);
}
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link:hover, .nav-link.active { color: var(--primary) !important; }

/* ---- BUTONLAR ---- */
.btn-primary-venus {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white !important;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 10px 28px;
    transition: var(--transition);
    display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary-venus:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,107,0,0.35);
    color: white !important;
}
.btn-outline-venus {
    border: 2px solid var(--primary);
    color: var(--primary);
    border-radius: 50px;
    font-weight: 600;
    padding: 9px 26px;
    transition: var(--transition);
    background: transparent;
}
.btn-outline-venus:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}
.btn-white-venus {
    background: white;
    color: var(--primary) !important;
    border-radius: 50px;
    font-weight: 700;
    padding: 12px 32px;
    transition: var(--transition);
    border: 2px solid white;
}
.btn-white-venus:hover {
    background: transparent;
    color: white !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,255,255,0.3);
}

/* ---- HERO SLIDER ---- */
.hero-section { position: relative; overflow: hidden; }
.hero-slide {
    min-height: 600px;
    background: linear-gradient(135deg, var(--secondary) 0%, #2d2d4e 50%, var(--secondary-dark) 100%);
    display: flex; align-items: center;
    position: relative;
}
.hero-slide::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23FF6B00' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}
.hero-content { position: relative; z-index: 2; }
.hero-badge {
    display: inline-block;
    background: rgba(255,107,0,0.2);
    border: 1px solid rgba(255,107,0,0.4);
    color: var(--primary-light);
    padding: 6px 18px; border-radius: 50px;
    font-size: 0.85rem; font-weight: 500;
    margin-bottom: 20px;
}
.hero-title {
    font-size: 3rem; font-weight: 800;
    color: white; line-height: 1.2;
    margin-bottom: 20px;
}
.hero-title span { color: var(--primary); }
.hero-desc {
    font-size: 1.1rem; color: rgba(255,255,255,0.75);
    margin-bottom: 35px; max-width: 550px;
}
.hero-btn-group { display: flex; gap: 15px; flex-wrap: wrap; }
.hero-stats {
    display: flex; gap: 40px; margin-top: 50px;
    padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stat-item { text-align: center; }
.hero-stat-num {
    font-size: 2rem; font-weight: 800; color: var(--primary);
    display: block;
}
.hero-stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.6); }
.hero-visual {
    position: relative; z-index: 2;
    display: flex; justify-content: center; align-items: center;
}
.hero-card-float {
    background: white; border-radius: 16px;
    padding: 20px 25px;
    box-shadow: var(--shadow-dark);
    position: absolute;
}
.hero-main-circle {
    width: 350px; height: 350px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 8rem;
    box-shadow: 0 0 80px rgba(255,107,0,0.4);
    animation: float 3s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Carousel kontrolleri */
.carousel-control-prev, .carousel-control-next {
    width: 50px; height: 50px;
    background: var(--primary);
    border-radius: 50%;
    top: 50%; transform: translateY(-50%);
    opacity: 1;
}
.carousel-control-prev { left: 20px; }
.carousel-control-next { right: 20px; }
.carousel-indicators button {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    border: none; margin: 0 4px;
}
.carousel-indicators button.active { background: var(--primary); }

/* ---- BÖLÜM BAŞLIKLARI ---- */
.section-header { text-align: center; margin-bottom: 60px; }
.section-badge {
    display: inline-block;
    background: var(--primary-xlight);
    color: var(--primary);
    padding: 6px 20px; border-radius: 50px;
    font-size: 0.85rem; font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase; letter-spacing: 1px;
}
.section-title {
    font-size: 2.5rem; font-weight: 800;
    color: var(--dark); margin-bottom: 15px;
}
.section-title span { color: var(--primary); }
.section-desc {
    font-size: 1.05rem; color: var(--gray);
    max-width: 600px; margin: 0 auto;
}
.section-divider {
    width: 60px; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 2px;
    margin: 20px auto 0;
}

/* ---- İSTATİSTİKLER ---- */
.stats-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}
.stats-section::before {
    content: '';
    position: absolute; top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 50%);
}
.stat-item { text-align: center; color: white; padding: 20px; }
.stat-number {
    font-size: 3rem; font-weight: 800;
    display: block; line-height: 1;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.stat-plus { color: rgba(255,255,255,0.7); font-size: 2rem; }
.stat-label {
    font-size: 1rem; font-weight: 500;
    margin-top: 8px; opacity: 0.9;
}
.stat-icon {
    font-size: 2.5rem; margin-bottom: 15px;
    opacity: 0.8;
}

/* ---- HİZMETLER ---- */
.hizmetler-section { padding: 100px 0; background: var(--light); }
.hizmet-kart {
    background: white;
    border-radius: 20px;
    padding: 35px 30px;
    height: 100%;
    border: 1px solid var(--gray-light);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.hizmet-kart::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transition: var(--transition);
}
.hizmet-kart:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 60px rgba(255,107,0,0.15);
    border-color: transparent;
}
.hizmet-kart:hover::before { transform: scaleX(1); }
.hizmet-ikon {
    width: 72px; height: 72px;
    background: var(--primary-xlight);
    border-radius: 18px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 22px;
    transition: var(--transition);
}
.hizmet-kart:hover .hizmet-ikon {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    transform: rotate(10deg);
}
.hizmet-kart h4 {
    font-size: 1.2rem; font-weight: 700;
    margin-bottom: 12px; color: var(--dark);
}
.hizmet-kart p {
    color: var(--gray); font-size: 0.95rem;
    line-height: 1.7; margin-bottom: 20px;
}
.hizmet-link {
    color: var(--primary); font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex; align-items: center; gap: 6px;
}
.hizmet-link:hover { color: var(--primary-dark); gap: 10px; }

/* ---- HAKKIMIZDA ---- */
.hakkimizda-section { padding: 100px 0; }
.hakkimizda-img-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}
.hakkimizda-img-wrapper img {
    border-radius: 20px;
    width: 100%;
    object-fit: cover;
    min-height: 400px;
}
.deneyim-badge {
    position: absolute; bottom: 30px; right: -20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white; border-radius: 16px;
    padding: 20px 25px; text-align: center;
    box-shadow: 0 10px 30px rgba(255,107,0,0.4);
}
.deneyim-badge .yon { font-size: 2.5rem; font-weight: 800; line-height: 1; }
.neden-biz-item {
    display: flex; align-items: flex-start; gap: 15px;
    margin-bottom: 25px;
}
.neden-biz-ikon {
    width: 45px; height: 45px; min-width: 45px;
    background: var(--primary-xlight);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: var(--primary); font-size: 1.1rem;
}

/* ---- REFERANSLAR ---- */
.referanslar-section {
    padding: 80px 0;
    background: var(--light);
}
.referans-logo {
    background: white;
    border-radius: 12px;
    padding: 20px 30px;
    display: flex; align-items: center; justify-content: center;
    height: 90px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.06);
    transition: var(--transition);
    filter: grayscale(100%);
    opacity: 0.6;
    font-weight: 700; font-size: 1.1rem;
    color: var(--dark);
}
.referans-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

/* ---- HABERLER ---- */
.haberler-section { padding: 100px 0; }
.haber-kart {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: var(--transition);
    background: white;
    height: 100%;
}
.haber-kart:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}
.haber-kart-img {
    width: 100%; height: 220px;
    object-fit: cover; background: var(--primary-xlight);
    display: flex; align-items: center; justify-content: center;
}
.haber-kart-img-placeholder {
    width: 100%; height: 220px;
    background: linear-gradient(135deg, var(--primary-xlight), #ffeee0);
    display: flex; align-items: center; justify-content: center;
    font-size: 3rem; color: var(--primary);
}
.haber-kart-body { padding: 25px; }
.haber-meta {
    display: flex; align-items: center; gap: 15px;
    font-size: 0.85rem; color: var(--gray);
    margin-bottom: 12px;
}
.haber-meta .badge-category {
    background: var(--primary-xlight);
    color: var(--primary);
    padding: 4px 12px; border-radius: 50px;
    font-weight: 600; font-size: 0.8rem;
}
.haber-kart h4 {
    font-size: 1.1rem; font-weight: 700;
    margin-bottom: 12px; line-height: 1.4;
    color: var(--dark);
}
.haber-kart h4 a:hover { color: var(--primary); }

/* ---- İLETİŞİM BANDI ---- */
.cta-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: ''; position: absolute;
    top: -100px; right: -100px;
    width: 400px; height: 400px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}
.cta-title {
    font-size: 2.5rem; font-weight: 800;
    color: white; margin-bottom: 15px;
}
.cta-desc { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: 30px; }

/* ---- FOOTER ---- */
.footer { background: var(--secondary); }
.footer-top { padding: 80px 0 50px; }
.footer-widget h5.footer-title {
    color: var(--primary-light);
    font-size: 1.1rem; font-weight: 700;
    margin-bottom: 22px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(255,107,0,0.3);
}
.logo-venus-footer {
    font-size: 1.8rem; font-weight: 800;
    color: var(--primary); letter-spacing: 2px;
}
.logo-arastirma-footer {
    font-size: 0.75rem; font-weight: 600;
    color: rgba(255,255,255,0.7); letter-spacing: 3px;
}
.footer-desc { color: rgba(255,255,255,0.6); font-size: 0.92rem; line-height: 1.8; }
.footer-links { list-style: none; padding: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255,255,255,0.65);
    font-size: 0.92rem; transition: var(--transition);
    display: inline-block;
}
.footer-links a:hover { color: var(--primary); transform: translateX(5px); }
.footer-links a i { color: var(--primary); }
.footer-contact { list-style: none; padding: 0; }
.footer-contact li {
    display: flex; align-items: flex-start; gap: 12px;
    margin-bottom: 15px; color: rgba(255,255,255,0.65); font-size: 0.92rem;
}
.footer-contact li i { color: var(--primary); margin-top: 3px; min-width: 16px; }
.footer-contact a { color: rgba(255,255,255,0.65); }
.footer-contact a:hover { color: var(--primary); }
.social-links { display: flex; gap: 10px; flex-wrap: wrap; }
.social-link {
    width: 38px; height: 38px;
    background: rgba(255,255,255,0.08);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem; transition: var(--transition);
}
.social-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}
.footer-bottom {
    background: rgba(0,0,0,0.3);
    padding: 20px 0;
    color: rgba(255,255,255,0.5);
    font-size: 0.88rem;
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--primary); }

/* ---- WHATSAPP BUTONU ---- */
.whatsapp-float {
    position: fixed; bottom: 90px; right: 25px;
    width: 55px; height: 55px;
    background: #25d366;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 1.6rem;
    box-shadow: 0 4px 20px rgba(37,211,102,0.5);
    z-index: 1000; transition: var(--transition);
    animation: whatsapp-pulse 2s infinite;
}
.whatsapp-float:hover {
    transform: scale(1.1);
    color: white;
    background: #1eb856;
}
@keyframes whatsapp-pulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.5); }
    50% { box-shadow: 0 4px 35px rgba(37,211,102,0.8); }
}

/* ---- YUKARI ÇIK ---- */
.back-to-top {
    position: fixed; bottom: 25px; right: 25px;
    width: 45px; height: 45px;
    background: var(--primary);
    color: white; border: none;
    border-radius: 50%;
    cursor: pointer; font-size: 1rem;
    display: none; align-items: center; justify-content: center;
    box-shadow: 0 4px 15px rgba(255,107,0,0.4);
    transition: var(--transition); z-index: 999;
}
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }
.back-to-top.show { display: flex; }

/* ---- PAGE BANNER ---- */
.page-banner {
    background: linear-gradient(135deg, var(--secondary) 0%, #2d2d4e 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg...%3E%3C/svg%3E") repeat;
    opacity: 0.05;
}
.page-banner h1 {
    color: white; font-size: 2.8rem; font-weight: 800;
    position: relative;
}
.page-banner h1 span { color: var(--primary); }
.breadcrumb { background: none; padding: 0; margin: 0; }
.breadcrumb-item { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
.breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.4); }
.breadcrumb-item a { color: rgba(255,255,255,0.7); }
.breadcrumb-item a:hover { color: var(--primary); }
.breadcrumb-item.active { color: var(--primary); }

/* ---- İLETİŞİM SAYFASI ---- */
.iletisim-section { padding: 100px 0; }
.iletisim-kart {
    background: white; border-radius: 20px;
    padding: 40px; box-shadow: var(--shadow-dark);
}
.iletisim-bilgi-item {
    display: flex; align-items: flex-start; gap: 20px;
    margin-bottom: 35px;
}
.iletisim-bilgi-ikon {
    width: 55px; height: 55px; min-width: 55px;
    background: var(--primary-xlight);
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; color: var(--primary);
}
.iletisim-bilgi-icerik h5 {
    font-size: 1rem; font-weight: 700;
    margin-bottom: 5px; color: var(--dark);
}
.iletisim-bilgi-icerik p, .iletisim-bilgi-icerik a {
    color: var(--gray); margin: 0; font-size: 0.95rem;
}
.form-control, .form-select {
    border-radius: 10px;
    border: 1px solid #dee2e6;
    padding: 12px 16px;
    font-size: 0.95rem;
    transition: var(--transition);
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255,107,0,0.12);
}
.form-label { font-weight: 600; font-size: 0.9rem; color: var(--dark); }

/* ---- HABERDETAYı ---- */
.haber-detay-icerik img { border-radius: 12px; margin: 20px 0; }
.haber-detay-icerik h2, .haber-detay-icerik h3 { color: var(--dark); margin: 25px 0 15px; }
.haber-detay-icerik p { color: var(--text); line-height: 1.9; margin-bottom: 18px; }

/* ---- ADMIN LİNKİ (GİZLİ) ---- */
.admin-link {
    position: fixed; bottom: 5px; left: 5px;
    opacity: 0.01; font-size: 0.6rem; color: transparent;
}
.admin-link:hover { opacity: 0.5; color: #ccc; }

/* ---- UTILITY ---- */
.bg-primary-venus { background: var(--primary) !important; }
.bg-primary-gradient { background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)) !important; }
.text-primary-venus { color: var(--primary) !important; }
.section-padding { padding: 100px 0; }
.rounded-venus { border-radius: var(--radius); }

/* ---- ANİMASYONLAR ---- */
[data-aos] { opacity: 0; }
[data-aos].aos-animate { opacity: 1; }

/* ---- RESPONSİVE ---- */
@media (max-width: 991.98px) {
    .hero-title { font-size: 2.2rem; }
    .section-title { font-size: 2rem; }
    .hero-stats { gap: 20px; }
    .hero-stat-num { font-size: 1.5rem; }
    .hero-main-circle { width: 250px; height: 250px; font-size: 5rem; }
    .cta-title { font-size: 2rem; }
}
@media (max-width: 767.98px) {
    .hero-slide { min-height: 500px; padding: 60px 0; }
    .hero-title { font-size: 1.8rem; }
    .hero-btn-group { flex-direction: column; }
    .hero-stats { flex-wrap: wrap; justify-content: center; }
    .section-title { font-size: 1.7rem; }
    .top-bar .top-bar-left span:last-child { display: none; }
    .deneyim-badge { right: 10px; }
    .page-banner h1 { font-size: 2rem; }
    .stat-number { font-size: 2.2rem; }
}
@media (max-width: 575.98px) {
    .hero-title { font-size: 1.5rem; }
    .section-title { font-size: 1.5rem; }
}