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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, #8B1538 0%, #B91D47 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 2rem;
    font-weight: bold;
    color: #f4f4f4;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.nav-links a:hover {
    color: #F77F00;
}

/* Hero Section - White Background */
.hero {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
    color: #333;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="%23B91D47" opacity="0.05"/><circle cx="80" cy="40" r="1" fill="%23E63946" opacity="0.05"/><circle cx="40" cy="80" r="1.5" fill="%23F77F00" opacity="0.05"/><circle cx="90" cy="90" r="1" fill="%23B91D47" opacity="0.05"/><circle cx="10" cy="60" r="1" fill="%23E63946" opacity="0.05"/></svg>');
    background-size: 200px 200px;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: bold;
    color: #B91D47;
    text-shadow: none;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: #666;
    text-shadow: none;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, #B91D47, #E63946);
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(185, 29, 71, 0.3);
}

.cta-button:hover {
    background: linear-gradient(45deg, #E63946, #B91D47);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(185, 29, 71, 0.4);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: #B91D47;
    font-size: 2rem;
    animation: bounce 2s infinite;
    cursor: pointer;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #B91D47;
    font-weight: bold;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(185, 29, 71, 0.1), transparent);
    transition: left 0.5s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(185, 29, 71, 0.2);
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(185, 29, 71, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(185, 29, 71, 0); }
    100% { box-shadow: 0 0 0 0 rgba(185, 29, 71, 0); }
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #B91D47, #E63946);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
    color: white;
}

.product-section {
    background: #f8f9fa;
}

/* New Product Layout */
.product-intro {
    display: flex;
    gap: 3rem;
    align-items: flex-start;
    margin-bottom: 3rem;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.product-image-small {
    flex: 0 0 300px;
    text-align: center;
}

.product-image-small img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.product-image-small img:hover {
    transform: scale(1.05);
}

.product-intro-text {
    flex: 1;
    padding-left: 1rem;
}

.product-details {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.product-image {
    text-align: center;
}

/* Product Image Enhancement */
.product-image img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.product-image img:hover {
    transform: scale(1.05);
}

/* Product Tabs */
.product-tabs {
    display: flex;
    margin: 2rem 0 1rem 0;
    border-bottom: 2px solid #f0f0f0;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tab-button {
    background: none;
    border: none;
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-weight: 500;
    color: #666;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.tab-button.active,
.tab-button:hover {
    color: #B91D47;
    border-bottom-color: #B91D47;
}

.tab-content {
    display: none;
    padding: 1.5rem 0;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Two Column Layout */
.two-column-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 1rem 0;
}

.two-column-list h5 {
    color: #B91D47;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* Usage Grid */
.usage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.usage-card {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #B91D47;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

.usage-card h5 {
    color: #B91D47;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.usage-card p {
    margin-bottom: 0.5rem;
}

/* Highlight and Warning Boxes */
.highlight-box {
    background: linear-gradient(135deg, #B91D47, #E63946);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1.5rem 0;
    text-align: center;
}

.warning-box {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

/* Accordion Styles */
.details-accordion {
    margin: 1rem 0;
}

.accordion-item {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    background: #f8f9fa;
    border: none;
    padding: 1rem 1.5rem;
    text-align: left;
    cursor: pointer;
    font-weight: 600;
    color: #B91D47;
    font-size: 1rem;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.accordion-header:hover {
    background: #e9ecef;
}

.accordion-header.active {
    background: #e9ecef;
}

.accordion-content {
    padding: 0 1.5rem;
    background: white;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease-out;
}

.accordion-content.active {
    padding: 1.5rem;
}

.accordion-content h6 {
    color: #B91D47;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.accordion-content ul {
    list-style: none;
    padding-left: 0;
}

.accordion-content ul li {
    padding: 0.25rem 0;
    padding-left: 1rem;
    position: relative;
}

.accordion-content ul li:before {
    content: "•";
    color: #B91D47;
    position: absolute;
    left: 0;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.info-grid div {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
}

.info-grid h6 {
    color: #B91D47;
    margin-bottom: 0.5rem;
}

.benefits-list {
    list-style: none;
    margin: 2rem 0;
}

.benefits-list li {
    padding: 0.5rem 0;
    padding-left: 2rem;
    position: relative;
}

.benefits-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
    font-size: 1.2rem;
}

.stores-section {
    background: linear-gradient(135deg, #B91D47, #E63946);
    color: white;
    text-align: center;
}

.store-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.store-link {
    background: white;
    color: #B91D47;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 10px;
    font-weight: bold;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 150px;
    justify-content: center;
}

.store-link:hover {
    transform: scale(1.05);
}

.store-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
    max-width: 200px;
}

/* Her logo için özel boyutlar */
.store-logo[alt="Trendyol"] {
    height: 50px;
    max-width: 120px;
}

.store-logo[alt="N11"] {
    height: 45px;
    max-width: 80px;
}

.store-logo[alt="Hepsiburada"] {
    height: 90px;
    max-width: 210px;
}

.store-logo[alt="Amazon"] {
    height: 120px;
    max-width: 220px;
    width: auto;
}

.contact-section {
    background: #f8f9fa;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}

.contact-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-card h3 {
    color: #B91D47;
    margin-bottom: 1rem;
}

footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Simple Mobile Navigation - Hidden on Desktop */
.mobile-nav-simple {
    display: none !important;
    visibility: hidden;
    opacity: 0;
    position: absolute;
    left: -9999px;
}

/* Ensure mobile nav is only visible on mobile devices */
@media (min-width: 769px) {
    .mobile-nav-simple {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        position: absolute !important;
        left: -9999px !important;
    }
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: linear-gradient(135deg, #8B1538 0%, #B91D47 100%);
    z-index: 999;
    padding: 1rem 0;
}

.mobile-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav li {
    text-align: center;
    padding: 0.5rem 0;
}

.mobile-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: none; /* Hide hamburger since we don't need it */
    }

    /* Show simple mobile navigation */
    .mobile-nav-simple {
        display: flex;
        flex-direction: column;
        gap: 0.8rem;
        margin-bottom: 1rem;
        margin-top: 1rem;
        padding: 1.2rem;
        background: rgba(255, 255, 255, 0.95);
        border-radius: 15px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        position: relative;
        z-index: 10;
        pointer-events: auto;
    }

    .mobile-nav-simple a {
        width: 100%;
        text-align: center;
        color: #B91D47;
        text-decoration: none;
        font-weight: 600;
        font-size: 1rem;
        padding: 1rem;
        background: #f8f9fa;
        border-radius: 10px;
        border: 1px solid #e9ecef;
        transition: all 0.3s ease;
        display: block;
        cursor: pointer;
        pointer-events: auto;
        user-select: text;
        -webkit-user-select: text;
        -moz-user-select: text;
        -ms-user-select: text;
        position: relative;
        z-index: 11;
    }

    .mobile-nav-simple a:hover,
    .mobile-nav-simple a:active,
    .mobile-nav-simple a:focus {
        background: #B91D47;
        color: white;
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(185, 29, 71, 0.3);
    }

    /* Header mobilde de görünür kalacak */
    header {
        display: block;
        padding: 0.8rem 0;
    }

    .logo {
        font-size: 1.2rem;
    }

    .logo img {
        height: 30px;
    }

    /* Mobil menü düzenlemesi */
    .mobile-nav {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: linear-gradient(135deg, #8B1538 0%, #B91D47 100%);
        z-index: 999;
        padding: 1rem 0;
        box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    }

    .mobile-nav.active {
        display: block;
    }

    .mobile-nav ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .mobile-nav li {
        text-align: center;
        padding: 0.5rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .mobile-nav li:last-child {
        border-bottom: none;
    }

    .mobile-nav a {
        color: white;
        text-decoration: none;
        font-weight: 500;
        font-size: 1.1rem;
        display: block;
        padding: 0.8rem 1rem;
        transition: background 0.3s ease;
    }

    .mobile-nav a:hover {
        background: rgba(255,255,255,0.1);
    }

    /* Hero düzenlemesi */
    .hero {
        padding-top: 2rem;
        margin-top: 0;
        height: auto;
        min-height: 80vh;
        padding-bottom: 2rem;
    }
    
    /* Scroll indicator'ı mobilde gizle */
    .scroll-indicator {
        display: none;
    }
    
    /* Section scrolling offset for mobile */
    section {
        scroll-margin-top: 60px;
    }
    
    /* Ensure sections are visible */
    #urun, #neden, #magazalar, #iletisim {
        padding-top: 1rem;
    }

    .hero-content h1 {
        font-size: 2.2rem;
        margin-bottom: 0.8rem;
    }

    .hero-content p {
        font-size: 1rem;
        padding: 0 1rem;
        margin-bottom: 1.5rem;
    }
    
    .cta-button {
        padding: 12px 25px;
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .product-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .product-intro {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .product-image-small {
        flex: none;
        align-self: center;
    }

    .product-intro-text {
        padding-left: 0;
    }

    /* Mobile Tab Styles */
    .product-tabs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
        margin: 1.5rem 0 1rem 0;
        border-bottom: none;
    }

    .tab-button {
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        border-bottom: 3px solid transparent;
    }

    .tab-button.active {
        border-color: #B91D47;
        background: #f8f9fa;
    }

    /* Product details mobil görünürlüğü */
    .product-details {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        background: white !important;
        padding: 1rem !important;
        margin-top: 2rem !important;
        border-radius: 15px !important;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1) !important;
    }

    .product-details > div {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        margin: 1.5rem 0 !important;
        padding: 1rem !important;
    }

    /* Mobil için fade-in animasyonlarını devre dışı bırak */
    .fade-in {
        opacity: 1 !important;
        transform: translateY(0) !important;
        visibility: visible !important;
        display: block !important;
    }

    .two-column-list {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .usage-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .store-links {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .store-link {
        width: 100%;
        max-width: 250px;
    }

    .store-logo {
        height: 60px;
        max-width: 180px;
    }

    /* Mobil için özel logo boyutları */
    .store-logo[alt="Trendyol"] {
        height: 40px;
        max-width: 100px;
    }

    .store-logo[alt="N11"] {
        height: 35px;
        max-width: 70px;
    }

    .store-logo[alt="Hepsiburada"] {
        height: 70px;
        max-width: 170px;
    }

    .store-logo[alt="Amazon"] {
        height: 90px;
        max-width: 180px;
        width: auto;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-info {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .logo img {
        height: 30px;
    }

    .logo {
        font-size: 1.5rem;
    }
}

/* Browser compatibility and production fixes */
/* Force hide mobile navigation on desktop - multiple approaches for browser compatibility */
@media screen and (min-width: 769px) {
    .mobile-nav-simple {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        position: absolute !important;
        left: -9999px !important;
        top: -9999px !important;
        width: 0 !important;
        height: 0 !important;
        overflow: hidden !important;
        clip: rect(0, 0, 0, 0) !important;
        -webkit-clip-path: inset(50%) !important;
        clip-path: inset(50%) !important;
        white-space: nowrap !important;
    }
}

/* Ensure mobile navigation only appears on mobile devices */
@media screen and (max-width: 768px) {
    .mobile-nav-simple {
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        position: relative !important;
        left: auto !important;
        top: auto !important;
        width: auto !important;
        height: auto !important;
        overflow: visible !important;
        clip: auto !important;
        -webkit-clip-path: none !important;
        clip-path: none !important;
        white-space: normal !important;
    }
}

/* Additional fallback for very strict environments */
.desktop-only .mobile-nav-simple {
    display: none !important;
}

.mobile-only .nav-links {
    display: none !important;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 60px; /* Account for fixed header on mobile */
}

@media (min-width: 769px) {
    html {
        scroll-padding-top: 70px; /* Different offset for desktop */
    }
}

/* Loading animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}