/* ============================================
   YÜK ASANSÖRLERİ - PROFESYONEL CSS
   Modern, Responsive, Şık Tasarım
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #1e3c72;
    --primary-dark: #0f2a4f;
    --primary-light: #2a5298;
    --secondary: #f39c12;
    --secondary-dark: #e67e22;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --white: #ffffff;
    --light: #f8f9fc;
    --gray-100: #f7f7f7;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --dark: #0a192f;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 5px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    color: var(--dark);
}

/* ========== BUTTONS ========== */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border: none;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    border: none;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--white);
}

.btn-outline {
    border: 2px solid var(--primary);
    background: transparent;
    color: var(--primary);
    padding: 10px 26px;
    border-radius: var(--radius-md);
    font-weight: 600;
}

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

/* ========== NAVBAR ========== */
.navbar {
    background: var(--white);
    padding: 15px 0;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar.scrolled {
    padding: 10px 0;
    box-shadow: var(--shadow-lg);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-link {
    font-weight: 500;
    margin: 0 5px;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.nav-link:hover {
    color: var(--secondary);
}

/* ========== HERO SLIDER ========== */
.hero-slider {
    height: 80vh;
    min-height: 600px;
}

.swiper-slide {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.swiper-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.6), rgba(0,0,0,0.4));
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    z-index: 2;
    width: 80%;
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

.slide-content h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
}

.slide-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

.swiper-button-next,
.swiper-button-prev {
    color: var(--white);
    background: rgba(255,255,255,0.2);
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.swiper-button-next:hover,
.swiper-button-prev:hover {
    background: var(--secondary);
}

.swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: var(--white);
}

.swiper-pagination-bullet-active {
    background: var(--secondary);
}

/* ========== PRODUCT CARDS ========== */
.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    margin-bottom: 30px;
    position: relative;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--secondary);
    color: var(--white);
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    z-index: 1;
}

.product-badge.popular {
    background: var(--warning);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-overlay a {
    width: 45px;
    height: 45px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: var(--transition);
}

.product-overlay a:hover {
    background: var(--secondary);
    color: var(--white);
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

/* ========== SERVICE CARDS ========== */
.service-card {
    text-align: center;
    padding: 40px 25px;
    background: var(--white);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.service-icon i {
    font-size: 2rem;
    color: var(--white);
}

/* ========== STATS SECTION ========== */
.stats-section {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    padding: 60px 0;
    color: var(--white);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    font-family: 'Poppins', sans-serif;
}

/* ========== REFERENCE CARDS ========== */
.reference-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 30px;
    cursor: pointer;
}

.reference-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.reference-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.reference-card:hover .reference-image img {
    transform: scale(1.1);
}

.reference-overlay {
    position: absolute;
    bottom: -100%;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    color: var(--white);
    transition: var(--transition);
}

.reference-card:hover .reference-overlay {
    bottom: 0;
}

.reference-overlay h4 {
    color: var(--white);
    font-size: 1rem;
}

/* ========== CONTACT SECTION ========== */
.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon i {
    color: var(--white);
    font-size: 1.2rem;
}

/* ========== FOOTER ========== */
.footer {
    background: var(--dark);
    color: var(--gray-400);
    padding: 60px 0 20px;
}

.footer h4 {
    color: var(--white);
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--secondary);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a:hover {
    color: var(--secondary);
    padding-left: 5px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--secondary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* ========== BACK TO TOP ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    background: var(--secondary-dark);
}

/* ========== WHATSAPP BUTTON ========== */
.whatsapp-button {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 55px;
    height: 55px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.8rem;
    z-index: 999;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-button:hover {
    transform: scale(1.1);
    color: var(--white);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ========== LOADER ========== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s;
}

.loader.hide {
    opacity: 0;
    visibility: hidden;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== BREADCRUMB ========== */
.breadcrumb-item a {
    text-decoration: none;
    opacity: 0.8;
}

.breadcrumb-item a:hover {
    opacity: 1;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
    .hero-slider { height: 500px; min-height: 500px; }
    .slide-content h1 { font-size: 2rem; }
    .slide-content p { font-size: 1rem; }
}

@media (max-width: 768px) {
    .hero-slider { height: 400px; min-height: 400px; }
    .slide-content h1 { font-size: 1.5rem; }
    .stat-number { font-size: 1.8rem; }
    .back-to-top, .whatsapp-button { width: 40px; height: 40px; font-size: 1.2rem; }
}