/* ============================================
   CSS Berlin V3 - Climate Smart Solutions
   Main Stylesheet - No Banner Version
   ============================================ */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Colors - Climate Action Theme (Orange to Green) */
    /* Orange = Climate Crisis (Problem/Urgency) */
    --primary-orange: #FF6B35;
    --primary-orange-hover: #FF8C5A;
    --primary-orange-light: #FFB088;
    --accent-orange: #FFF4F0;

    /* Green = Sustainability Solution (Hope/Action) */
    --primary-green: #2D5016;
    --primary-green-hover: #4A7C2C;
    --primary-green-light: #6BA83E;
    --secondary-green: #8BC34A;
    --accent-green: #E8F5E9;

    /* Text Colors */
    --text-primary: #212121;
    --text-secondary: #757575;
    --text-light: #9E9E9E;
    --text-white: #FFFFFF;

    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F5F5;
    --bg-tertiary: #FAFAFA;

    /* Border Colors */
    --border-color: #E0E0E0;
    --border-dark: #BDBDBD;

    /* Status Colors */
    --success: #4CAF50;
    --warning: #FF9800;
    --error: #F44336;
    --info: #2196F3;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   HEADER STYLES - V3 NEW LAYOUT
   ============================================ */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-xl);
    display: grid;
    grid-template-columns: 300px 1fr auto;
    align-items: center;
    gap: var(--spacing-xl);
}

/* Logo Section - Prominent with Slogan */
.logo-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.logo {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
}

.logo-css {
    font-size: 36px;
    font-weight: var(--font-weight-black);
    color: var(--primary-green);
    letter-spacing: -1px;
}

.logo-berlin {
    font-size: 36px;
    font-weight: var(--font-weight-black);
    color: var(--text-primary);
    letter-spacing: -1px;
}

.slogan {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.5px;
    margin-top: var(--spacing-xs);
}

/* Main Navigation - Alle | Damen | Herren | Kinder */
.main-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: 16px;
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link.active {
    color: var(--primary-orange);
    font-weight: var(--font-weight-semibold);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-orange);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
    background: var(--primary-green);
}

.nav-link:hover {
    color: var(--primary-green);
}

/* Header Actions - Right Side */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link-special {
    font-size: 15px;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-link-special:hover {
    background: var(--accent-green);
    color: var(--primary-green);
}

.neu-link {
    color: var(--primary-green);
}

.icon-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all var(--transition-base);
    color: var(--text-secondary);
}

.icon-btn:hover {
    background: var(--accent-green);
    color: var(--primary-green);
    transform: scale(1.05);
}

.notification-badge,
.negotiation-count {
    position: absolute;
    top: 6px;
    right: 6px;
    background: var(--error);
    color: var(--text-white);
    font-size: 11px;
    font-weight: var(--font-weight-bold);
    padding: 2px 6px;
    border-radius: var(--radius-full);
    min-width: 18px;
    text-align: center;
}

/* Inserieren Button (Primary CTA - Orange to Green) */
.inserieren-btn-primary {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-orange), var(--primary-orange-hover));
    color: var(--text-white);
    font-weight: 600;
    font-size: 15px;
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
    transition: all var(--transition-base);
}

.inserieren-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(107, 168, 62, 0.4);
    background: linear-gradient(135deg, var(--primary-green-light), var(--secondary-green));
}

.inserieren-btn-primary svg {
    stroke-width: 2.5;
}

/* Anmelden & Registrieren Buttons */
.anmelden-btn,
.registrieren-btn {
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 14px;
    transition: all var(--transition-base);
}

.anmelden-btn {
    color: var(--text-primary);
    border: 1.5px solid var(--primary-orange);
}

.anmelden-btn:hover {
    border-color: var(--primary-green);
    color: var(--text-white);
    background: var(--primary-green);
}

.registrieren-btn {
    background: var(--primary-orange);
    color: var(--text-white);
}

.registrieren-btn:hover {
    background: var(--primary-green);
}

/* Top CO₂ Banner */
.top-banner {
    background: var(--primary-green);
    color: var(--text-white);
    padding: 12px 0;
    overflow: hidden;
}

.banner-slider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.banner-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 14px;
    font-weight: 500;
}

.banner-item svg {
    flex-shrink: 0;
}

/* Secondary Navigation */
.secondary-nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
}

.secondary-nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    padding: 0 var(--spacing-xl);
}

.sec-nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.sec-nav-link:hover {
    background: var(--primary-orange);
    color: var(--text-white);
}

/* Search Bar */
.search-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl) var(--spacing-lg) var(--spacing-xl);
}

.search-bar-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.category-filter-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.category-filter-btn:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
}

.category-filter-btn .chevron {
    transition: transform var(--transition-base);
}

.category-filter-btn.active .chevron {
    transform: rotate(180deg);
}

.search-bar {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    transition: all var(--transition-base);
}

.search-bar:focus-within {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px var(--accent-green);
}

.search-bar input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 15px;
    color: var(--text-primary);
}

.search-bar input::placeholder {
    color: var(--text-light);
}

.search-btn {
    background: var(--primary-green);
    color: var(--text-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
}

.search-btn:hover {
    background: var(--primary-green-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   PRODUCTS SECTION - NO BANNER!
   ============================================ */
.products-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.section-header h2 {
    font-size: 20px;
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
}

.filter-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.sort-dropdown {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.sort-dropdown:hover {
    border-color: var(--primary-green);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   PRODUCT CARD - V3 WITH 2-BUTTON LAYOUT
   ============================================ */
.product-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green-light);
}

/* Product Image */
.product-image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 133.33%; /* 3:4 aspect ratio */
    overflow: hidden;
    background: var(--bg-tertiary);
}

.product-image-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

/* Wishlist Button */
.wishlist-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-base);
    z-index: 2;
}

.wishlist-btn:hover {
    background: var(--bg-primary);
    color: var(--error);
    transform: scale(1.1);
}

.wishlist-btn.active {
    background: var(--error);
    color: var(--text-white);
}

.wishlist-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
    stroke: currentColor;
    stroke-width: 2;
}

/* Carbon Badge */
.carbon-badge {
    position: absolute;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: var(--font-weight-bold);
    color: var(--text-white);
    backdrop-filter: blur(10px);
    z-index: 2;
}

.carbon-badge svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

.carbon-badge.champion {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.95) 0%, rgba(255, 193, 7, 0.95) 100%);
}

.carbon-badge.profi {
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.95) 0%, rgba(103, 58, 183, 0.95) 100%);
}

.carbon-badge.fortgeschritten {
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.95) 0%, rgba(3, 169, 244, 0.95) 100%);
}

.carbon-badge.einsteiger {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.95) 0%, rgba(139, 195, 74, 0.95) 100%);
}

/* Product Info */
.product-info {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.product-brand {
    font-size: 12px;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.product-title {
    font-size: 16px;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-meta {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    gap: var(--spacing-sm);
}

.product-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.product-price-container {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

.product-price {
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--primary-green);
}

.product-new-price {
    font-size: 14px;
    color: var(--text-light);
    text-decoration: line-through;
}

/* ============================================
   2-BUTTON LAYOUT - KAUFEN + VERHANDELN
   ============================================ */
.product-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.buy-btn {
    padding: var(--spacing-md);
    background: var(--primary-green);
    color: var(--text-white);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

.buy-btn:hover {
    background: var(--primary-green-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(45, 80, 22, 0.3);
}

.buy-btn svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    fill: none;
}

.negotiate-btn {
    padding: var(--spacing-md);
    background: var(--bg-primary);
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

.negotiate-btn:hover {
    background: var(--accent-green);
    transform: translateY(-1px);
}

.negotiate-btn svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    fill: none;
}

/* Load More Button */
.load-more-container {
    display: flex;
    justify-content: center;
    padding: var(--spacing-xl) 0;
}

.load-more-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-primary);
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-semibold);
    font-size: 15px;
    transition: all var(--transition-base);
}

.load-more-btn:hover {
    background: var(--primary-green);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.load-more-btn svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
}

.load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ============================================
   FOOTER WITH CO₂ SLIDING NEWS BANNER
   ============================================ */
.footer {
    background: var(--text-primary);
    color: var(--text-white);
}

/* Footer News Banner - Sliding Campaign News */
.footer-news-banner {
    background: var(--primary-green);
    color: var(--text-white);
    overflow: hidden;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-news-slider {
    display: flex;
    animation: slideFooterNews 40s linear infinite;
}

.footer-news-slider:hover {
    animation-play-state: paused;
}

@keyframes slideFooterNews {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.footer-news-item {
    min-width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: 15px;
    font-weight: var(--font-weight-medium);
    padding: 0 var(--spacing-2xl);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.footer-news-item:hover {
    opacity: 0.8;
}

.footer-news-item svg {
    flex-shrink: 0;
}

/* Footer Container */
.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 3fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.brand-tagline {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--primary-green);
    transform: translateY(-2px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-size: 16px;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    color: var(--text-white);
}

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

.footer-column ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-column ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-base);
}

.footer-column ul li a:hover {
    color: var(--text-white);
    text-decoration: underline;
}

.newsletter-text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    font-size: 14px;
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.newsletter-form button {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--primary-green);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.newsletter-form button:hover {
    background: var(--primary-green-hover);
    transform: translateX(2px);
}

.trust-badges {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom-left p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom-right {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    font-size: 14px;
}

.footer-bottom-right a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-base);
}

.footer-bottom-right a:hover {
    color: var(--text-white);
}

.footer-bottom-right span {
    color: rgba(255, 255, 255, 0.3);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Extra Large Screens */
@media (min-width: 1600px) {
    .products-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* Large Tablets & Small Desktops */
@media (max-width: 1200px) {
    .header-container {
        grid-template-columns: 280px 1fr auto;
        gap: var(--spacing-lg);
    }

    .logo-css,
    .logo-berlin {
        font-size: 32px;
    }

    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablets */
@media (max-width: 1024px) {
    .header-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .logo-section {
        text-align: center;
    }

    .main-nav {
        justify-content: center;
    }

    .header-actions {
        justify-content: center;
    }

    .footer-top {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .main-nav {
        gap: var(--spacing-md);
    }

    .nav-link {
        font-size: 14px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .header-actions {
        flex-wrap: wrap;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .logo-css,
    .logo-berlin {
        font-size: 28px;
    }

    .slogan {
        font-size: 11px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

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

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }