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

html, body {
    height: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Main Content Area */
.main-content {
    flex: 1;
    padding-top: 80px; /* Header yüksekliği için */
}

/* Header */
.header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    background: linear-gradient(45deg, #e74c3c, #f39c12);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

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

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

        .nav-menu a:hover {
            color: #f39c12;
        }

.cart-icon {
    position: relative;
    cursor: pointer;
    transition: transform 0.3s ease;
}

    .cart-icon:hover {
        transform: scale(1.1);
    }

.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #e74c3c;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.9), rgba(52, 73, 94, 0.8)), url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%23f4f4f4" width="1200" height="600"/><g fill="%23ddd"><circle cx="100" cy="100" r="50"/><circle cx="300" cy="200" r="30"/><circle cx="500" cy="150" r="40"/><circle cx="700" cy="250" r="35"/><circle cx="900" cy="100" r="45"/><circle cx="1100" cy="180" r="25"/></g></svg>');
    background-size: cover;
    background-position: center;
    min-height: calc(100vh - 80px); /* Header yüksekliğini çıkar */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
}

.hero-content {
    max-width: 800px;
    padding: 2rem;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.cta-primary {
    background: linear-gradient(45deg, #e74c3c, #f39c12);
    color: white;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

    .cta-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
    }

.cta-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

    .cta-secondary:hover {
        background: white;
        color: #2c3e50;
        transform: translateY(-2px);
    }

/* Products Section */
.products {
    padding: 5rem 2rem;
    background: #f8f9fa;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    position: relative;
}

    .section-title::after {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 4px;
        background: linear-gradient(45deg, #e74c3c, #f39c12);
        border-radius: 2px;
    }

.product-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.category-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

    .category-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(45deg, #e74c3c, #f39c12);
    }

    .category-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    }

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #e74c3c, #f39c12);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1.5rem;
}

.category-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.category-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.size-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.size-btn {
    padding: 0.5rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    text-align: center;
}

    .size-btn:hover {
        border-color: #e74c3c;
        background: #ffe5e5;
    }

    .size-btn.selected {
        border-color: #e74c3c;
        background: #e74c3c;
        color: white;
    }

.price {
    font-size: 1.3rem;
    font-weight: bold;
    color: #e74c3c;
    margin-bottom: 1rem;
}

.add-to-cart {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(45deg, #e74c3c, #f39c12);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

    .add-to-cart:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
    }

/* Custom Canvas Section */
.custom-canvas {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 2rem;
    text-align: center;
}

.custom-form {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid rgba(255,255,255,0.2);
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

    .form-group label {
        display: block;
        margin-bottom: 0.5rem;
        font-weight: 600;
    }

    .form-group input,
    .form-group select {
        width: 100%;
        padding: 1rem;
        border: none;
        border-radius: 10px;
        font-size: 1rem;
        background: rgba(255,255,255,0.9);
        color: #333;
    }

.dimension-inputs {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1rem;
    align-items: center;
}

.x-symbol {
    font-size: 1.5rem;
    font-weight: bold;
    text-align: center;
}

/* Features Section */
.features {
    padding: 5rem 2rem;
    background: white;
}

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

.feature {
    text-align: center;
    padding: 2rem;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin: 0 auto 1.5rem;
}

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.feature p {
    color: #666;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 2rem 2rem;
    text-align: center;
    margin-top: auto; /* Footer'ı en alta itmek için */
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #f39c12;
}

.footer-section a {
    color: white;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

    .footer-section a:hover {
        color: #f39c12;
    }

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 2rem;
    opacity: 0.8;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

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

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .product-categories {
        grid-template-columns: 1fr;
    }

    .dimension-inputs {
        grid-template-columns: 1fr;
    }

    .x-symbol {
        display: none;
    }

    .main-content {
        padding-top: 70px;
    }
}

/* Shopping Cart Popup */
.cart-popup {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: white;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
    z-index: 2000;
    padding: 2rem;
    overflow-y: auto;
}

    .cart-popup.open {
        right: 0;
    }

.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1500;
}

    .cart-overlay.active {
        opacity: 1;
        visibility: visible;
    }

.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #eee;
}

.close-cart {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
}

.cart-empty {
    text-align: center;
    color: #666;
    font-style: italic;
    margin: 2rem 0;
}