/**
 * Minimalistyczny CSS dla Sklepu Hurtowego B2B
 * Czyste, szybkie, responsywne
 */

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --border-color: #ddd;
    --bg-light: #f9f9f9;
    --bg-white: #fff;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-white);
}

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

/* === HEADER === */
.header {
    background: var(--primary-color);
    color: white;
    padding: 15px 0;
    box-shadow: var(--shadow);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.logo a {
    color: white;
    text-decoration: none;
    font-size: 24px;
}

.header-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

.header-actions a,
.header-actions select {
    color: white;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    transition: var(--transition);
    background: rgba(255,255,255,0.1);
    border: 1px solid transparent;
}

.header-actions a:hover {
    background: rgba(255,255,255,0.2);
}

.header-actions select {
    cursor: pointer;
    border-color: rgba(255,255,255,0.3);
}

.cart-count {
    background: var(--error-color);
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 12px;
    margin-left: 5px;
}

/* Navigation */
.main-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.main-nav a {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    display: block;
    border-radius: 4px;
    transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    background: rgba(255,255,255,0.15);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    display: block;
}

/* === ALERTS === */
.alert {
    padding: 15px 20px;
    margin: 20px auto;
    border-radius: 4px;
    max-width: 1200px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* === MAIN CONTENT === */
.main-content {
    min-height: calc(100vh - 350px);
    padding: 40px 0;
}

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-size: 16px;
    transition: var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    background: #2980b9;
}

.btn-secondary {
    background: var(--text-light);
    color: white;
}

.btn-secondary:hover {
    background: #555;
}

.btn-small {
    padding: 6px 12px;
    font-size: 14px;
}

.btn-large {
    padding: 15px 30px;
    font-size: 18px;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-link {
    background: none;
    color: var(--secondary-color);
    padding: 10px 0;
}

/* === FORMS === */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.form-group small {
    color: var(--text-light);
    font-size: 13px;
}

/* === HOME PAGE === */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 30px;
}

.hero-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.features {
    padding: 60px 0;
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

/* === PRODUCTS === */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin: 30px 0;
}

.product-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.product-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.product-image {
    width: 100%;
    height: 250px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.product-info {
    padding: 20px;
}

.product-number {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 5px;
}

.product-name {
    font-size: 18px;
    margin-bottom: 10px;
}

.product-price {
    font-size: 20px;
    font-weight: bold;
    color: var(--secondary-color);
}

/* === PAGINATION === */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin: 40px 0;
}

.pagination-link {
    padding: 10px 15px;
    border-radius: 4px;
    text-decoration: none;
    background: var(--secondary-color);
    color: white;
}

/* === FOOTER === */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 40px 0 20px;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 20px;
}

.footer a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
}

.footer a:hover {
    color: white;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-nav {
        display: none;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }
    
    .header-actions {
        flex-wrap: wrap;
        font-size: 14px;
    }
}