:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --shadow-sm: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px -1px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-light);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.navbar {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

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

.navbar-brand {
    color: #fff;
    font-size: 1.75rem;
    font-weight: 800;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.025em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.navbar-brand::before {
    content: "BZ";
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #fff 0%, #f0f9ff 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    font-weight: 900;
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

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

.navbar-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

.navbar-links a:hover {
    border-bottom-color: var(--accent-color);
    color: #fff;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hero {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.92) 0%, rgba(29, 78, 216, 0.9) 30%, rgba(15, 23, 42, 0.98) 100%),
                url('https://images.unsplash.com/photo-1551288049-bebda4e38f71?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: #fff;
    padding: 10rem 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.25) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(245, 158, 11, 0.2) 0%, transparent 50%),
        linear-gradient(45deg, transparent 40%, rgba(15, 23, 42, 0.3) 100%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.25rem;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 2.75rem;
    color: rgba(255,255,255,0.95);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: #1f2937;
    padding: 1.125rem 2.75rem;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 1.05rem;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-md);
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #eab308;
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.hero .btn {
    background-color: var(--accent-color);
    color: #1f2937;
    padding: 1.25rem 3.5rem;
    font-size: 1.15rem;
    font-weight: 800;
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.4);
    border-radius: 12px;
}

.hero .btn:hover {
    background-color: #fbbf24;
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(245, 158, 11, 0.5);
}

.categories-section, .products-section {
    margin-bottom: 5rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
    position: relative;
    font-weight: 800;
}

.section-title::after {
    content: "";
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 1.25rem auto 0;
    border-radius: 2px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.category-card {
    background: #fff;
    padding: 2.5rem 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.category-image {
    width: 100%;
    min-height: 100px !important;
    height: 120px !important;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    padding: 0.5rem !important;
    margin-bottom: 0.75rem !important;
    overflow: hidden;
}

.category-image img {
    max-width: 100% !important;
    max-height: 80px !important;
    object-fit: contain !important;
    display: block !important;
    width: auto !important;
    height: auto !important;
}

.category-card h3 {
    font-size: 1.4rem;
    color: var(--dark-color);
    margin-bottom: 0.75rem;
}

.category-card p {
    color: #6b7280;
    margin-bottom: 1.5rem;
}

.category-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.category-link:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.products-section {
    padding-top: 2rem;
}

/* About Page Styles */
.about-hero {
    text-align: center;
    padding: 3rem 0 2rem;
}

.about-subtitle {
    font-size: 1.3rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.about-text h2 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    font-size: 1.75rem;
}

.about-text p {
    color: #4b5563;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.about-features {
    list-style: none;
    padding-left: 0;
}

.about-features li {
    padding: 0.75rem 0;
    font-size: 1.05rem;
    color: #374151;
}

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

.about-image-wrapper {
    width: 100%;
    min-height: 300px;
    background: #fff;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.about-image-wrapper img {
    max-width: 100%;
    max-height: 350px;
    object-fit: contain;
    display: block;
}

/* Contact Page Styles */
.contact-hero {
    text-align: center;
    padding: 3rem 0 2rem;
}

.contact-subtitle {
    font-size: 1.3rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-info h2, .contact-form-container h2 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
}

.contact-item {
    display: flex;
    gap: 1.25rem;
    padding: 1.5rem;
    background: #f9fafb;
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
    transition: all 0.2s ease;
}

.contact-item:hover {
    background: #f3f4f6;
}

.contact-icon {
    font-size: 2.5rem;
    min-width: 60px;
    text-align: center;
}

.contact-details h3 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #4b5563;
    line-height: 1.6;
}

.contact-form {
    background: #fff;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

@media (max-width: 900px) {
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* Navbar */
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem 1.5rem;
    }
    .navbar-links {
        gap: 1.25rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    /* Hero */
    .hero {
        padding: 6rem 1rem !important;
        background-attachment: scroll !important;
    }
    .hero h1 {
        font-size: 2.5rem !important;
    }
    .hero p {
        font-size: 1.1rem !important;
    }

    /* Sections */
    .section-title {
        font-size: 2rem !important;
    }

    /* Grids */
    .categories-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: 1.25rem;
    }
    .grid {
        grid-template-columns: 1fr !important;
    }

    /* Cards */
    .card-content {
        padding: 1.25rem !important;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    .footer-section ul {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem !important;
    }
    .navbar-brand {
        font-size: 1.5rem !important;
    }
    .hero h1 {
        font-size: 2rem !important;
    }
    .page-title {
        font-size: 2rem !important;
    }
    .btn, .btn-primary {
        width: 100% !important;
        padding: 0.875rem !important;
    }
}

.btn-primary {
    background-color: #10b981;
    color: #fff;
}

.btn-primary:hover {
    background-color: #059669;
    transform: translateY(-2px);
}

main {
    flex: 1;
    padding: 3.5rem 0;
}

.page-title {
    font-size: 2.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-weight: 800;
    letter-spacing: -0.025em;
}

.page-subtitle {
    color: var(--text-light);
    margin-bottom: 2.75rem;
    font-size: 1.15rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2.25rem;
    padding: 1rem 0;
}

.card {
    background-color: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0,0,0,0.05);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.2);
}

.card-image {
    width: 100%;
    min-height: 240px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4.5rem;
    overflow: hidden;
    padding: 1.5rem;
}

.card-image img {
    width: 100%;
    max-width: 100%;
    height: auto;
    max-height: 320px;
    object-fit: contain;
    display: block;
}

.card-content {
    padding: 1.75rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.875rem;
    color: var(--text-color);
    line-height: 1.45;
    font-weight: 700;
}

.card .price {
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 0.75rem 0 1.25rem;
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    margin-bottom: 1.25rem;
}

.tag {
    background-color: #eff6ff;
    color: var(--primary-color);
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.825rem;
    font-weight: 600;
}

.features-list, .specs-list {
    margin-top: 1.25rem;
    margin-bottom: 1.25rem;
    flex: 1;
}

.features-list h4, .specs-list h4 {
    font-size: 0.975rem;
    color: var(--text-color);
    margin-bottom: 0.625rem;
    font-weight: 700;
}

.features-list ul, .specs-list ul {
    list-style-position: inside;
    padding-left: 0;
    font-size: 0.925rem;
    color: var(--text-light);
}

.features-list li, .specs-list li {
    margin-bottom: 0.45rem;
}

.card .btn {
    margin-top: auto;
    width: 100%;
    text-align: center;
    padding: 0.875rem;
    font-size: 1rem;
}

.footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: rgba(255,255,255,0.85);
    padding: 3rem 0 1.75rem;
    margin-top: 4.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.footer-section h4 {
    color: #fff;
    margin-bottom: 1.25rem;
    font-size: 1.15rem;
    font-weight: 700;
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    transition: color 0.2s ease;
    line-height: 2.2;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1.75rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Page specific styles */
.content-section {
    background: var(--bg-white);
    padding: 3rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: 2.25rem;
    border: 1px solid rgba(0,0,0,0.05);
}

.content-section h2 {
    font-size: 1.875rem;
    margin-bottom: 1.25rem;
    color: var(--text-color);
    font-weight: 700;
}

.contact-form {
    display: grid;
    gap: 1.5rem;
    max-width: 650px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.975rem;
}

.form-group input, .form-group textarea {
    padding: 1rem 1.125rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
    background-color: #fafafa;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    min-height: 160px;
    resize: vertical;
}

@media (max-width: 768px) {
    .navbar-links {
        gap: 1.25rem;
    }
    
    .hero {
        padding: 5rem 1.5rem;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .page-title {
        font-size: 2.125rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
}