/* Modern Gray Design System */
:root {
    --primary-color: #f8f9fa;
    --secondary-color: #e9ecef;
    --accent-color: #495057;
    --accent-light: #6c757d;
    --accent-dark: #343a40;
    --text-dark: #212529;
    --text-light: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --border-light: #f1f3f4;
    --shadow-light: rgba(0,0,0,0.08);
    --shadow-medium: rgba(0,0,0,0.12);
    --shadow-dark: rgba(0,0,0,0.16);
    --transition: all 0.3s ease;
    --gradient-primary: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    --gradient-accent: linear-gradient(135deg, #495057 0%, #343a40 100%);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: #ffffff;
}

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

/* Header Styles */
.main-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 20px var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    background: var(--primary-color);
    padding: 12px 0;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contact-info {
    display: flex;
    gap: 25px;
}

.contact-info a {
    color: var(--text-light);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: var(--transition);
}

.contact-info a:hover {
    color: var(--accent-color);
    transform: translateY(-1px);
}

.business-hours {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.header-main {
    padding: 25px 0;
    background: #ffffff;
}

.header-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    pointer-events: none; /* Nicht anklickbar */
}

.logo-img {
    height: 85px;
    width: auto;
    object-fit: contain;
    background: #ffffff;
    padding: 8px;
}

/* Ultra-Minimal Navigation */
.category-nav {
    background: #ffffff;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    flex-wrap: wrap;
    background: #ffffff;
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin: 0 auto;
}

.nav-btn {
    position: relative;
    padding: 12px 20px;
    background: #ffffff;
    border: none;
    border-right: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    transition: all 0.15s ease;
    white-space: nowrap;
    font-size: 0.9rem;
}

.nav-btn:last-child {
    border-right: none;
}

.nav-btn:hover {
    background: var(--primary-color);
    color: var(--text-dark);
}

.nav-btn.active {
    background: var(--accent-color);
    color: white;
    font-weight: 600;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 50px;
    padding: 40px 0;
}

.section-header h2 {
    font-size: 2.8rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 300;
    position: relative;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Products Section */
.products-section {
    padding: 60px 0;
    background: #ffffff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 35px;
    margin-top: 40px;
}

.product-card {
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    box-shadow: 0 1px 3px var(--shadow-light);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-medium);
    border-color: var(--accent-light);
}

.product-image {
    width: 100%;
    height: 280px;
    background: var(--secondary-color);
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image::before {
    content: '📦';
    font-size: 4rem;
    opacity: 0.15;
    color: var(--text-muted);
}

.product-image[style*="background-image"]::before {
    display: none;
}

.product-status {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 10px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px var(--shadow-medium);
}

.status-available {
    background: rgba(25, 135, 84, 0.9);
    color: white;
}

.status-rented {
    background: rgba(220, 53, 69, 0.9);
    color: white;
}

.product-content {
    padding: 30px;
}

.product-category {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.product-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
    line-height: 1.3;
}

.product-description {
    color: var(--text-light);
    margin-bottom: 25px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
}

.product-price {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 25px;
}

.product-actions {
    display: flex;
    gap: 15px;
}

/* Buttons */
.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    flex: 1;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    border: 1px solid var(--accent-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-dark);
}

.btn-outline {
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn-outline:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-medium);
}

/* No Products */
.no-products {
    text-align: center;
    padding: 100px 20px;
    color: var(--text-light);
}

.no-products h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.no-products .btn {
    margin-top: 30px;
    display: inline-block;
    max-width: 250px;
}

/* Footer */
.main-footer {
    background: var(--primary-color);
    border-top: 1px solid var(--border-color);
    padding: 50px 0 30px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: var(--text-dark);
    margin-bottom: 20px;
    font-size: 1.3rem;
    font-weight: 600;
}

.footer-section p,
.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    line-height: 1.8;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }

    .header-top .container {
        flex-direction: column;
        gap: 15px;
    }

    .contact-info {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .nav-container {
        flex-direction: column;
        gap: 12px;
    }

    .nav-btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    .section-header h2 {
        font-size: 2.2rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .product-actions {
        flex-direction: column;
    }

    .logo-img {
        height: 45px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .products-section {
        padding: 40px 0;
    }

    .product-content {
        padding: 20px;
    }

    .section-header {
        padding: 30px 0;
    }

    .nav-btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}