:root {
    --primary: #000000;
    --secondary: #767676;
    --background: #ffffff;
    --card-bg: #f8f8f8;
    --border: #e1e1e1;
    --accent: #2563eb;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background);
    color: var(--primary);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

header {
    background-color: var(--primary);
    color: white;
    padding: 5px 0;
}

header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 5px;
    letter-spacing: 0.5px;
}

.language-selector {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    gap: 5px;
}

.lang-btn {
    padding: 5px 10px;
    background-color: transparent;
    border: 1px solid white;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}

.lang-btn.active {
    background-color: white;
    color: var(--primary);
    font-weight: bold;
}

.filters {
    display: flex;
    gap: 0px 15px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary);
}

.filters input {
    padding: 12px 15px;
    padding-left: 40px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    width: 100%;
    background-color: white;
    transition: all 0.2s;
}

.filters input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.size-filter-container {
    position: relative;
}

.filter-toggle-btn {
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 12px 15px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.filter-toggle-btn:hover {
    background-color: #1d4ed8;
}


.size-filter-panel {
    display: none;
    position: absolute;
    background-color: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1px 15px;
    margin-top: 10px;
    width: 100%;
    min-width: 300px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: 8px 7px 12px rgba(0, 0, 0, 0.15);
    z-index: 100;
}

.size-filter-panel.show {
    display: block;
}

.size-groups {
    display: grid;
    gap: 20px;
}

.size-group h4 {
    margin: 10px 0;
    color: var(--primary);
    font-size: 0.9rem;
}

.size-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.size-option {
    padding: 6px 12px;
    background-color: #4A90E2;
    border: 1px solid #357ABD;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    color: white;
    transition: all 0.2s;
}

.size-option:hover {
    background-color: #357ABD;
    border-color: #2C6693;
}

.size-option.selected {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

.selected-sizes {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 15px;
    width: 100%;
}

.size-chip {
    background-color: var(--accent);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.size-chip button {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
}

#shoe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.shoe-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.shoe-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.shoe-image-container {
    height: 250px;
    background-color: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border);
}

.shoe-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s;
}

.shoe-card:hover .shoe-image {
    transform: scale(1.03);
}

.shoe-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.shoe-info h2 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--primary);
    line-height: 1.3;
}

.shoe-info p {
    margin-bottom: 8px;
    color: var(--secondary);
    font-size: 0.9rem;
}

.price {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.25rem;
    margin: 15px 0;
    color: #2563eb;
}

.sort-controls {
    margin: 4px 0;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.sort-controls button {
    padding: 8px 12px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.sort-controls button:hover {
    background: var(--accent);
    color: white;
}

.sort-controls button.active {
    background: var(--accent);
    color: white;
    font-weight: bold;
}

.size-badge {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-right: 6px;
    margin-bottom: 6px;
    font-weight: 500;
}

.size-quantity {
    color: #d1d5db9f;
    font-size: 0.75rem;
    margin-left: 4px;
}

.sizes-container {
    margin-top: 10px;
}

#loading {
    text-align: center;
    padding: 40px;
    font-size: 1.1rem;
    color: #666;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-left-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

#no-results {
    text-align: center;
    padding: 50px;
    font-size: 1.1rem;
    color: var(--secondary);
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

#no-results i {
    font-size: 2rem;
    color: #ccc;
}

#reset-filters {
    padding: 10px 20px;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

#reset-filters:hover {
    background-color: #1d4ed8;
}

footer {
    margin-top: 50px;
    padding: 25px 0;
    border-top: 1px solid var(--border);
    color: var(--secondary);
    font-size: 0.9rem;
    text-align: center;
}

@media (max-width: 768px) {
    .filters {
        flex-direction: column;
    }
    
    .filters input {
        max-width: 100%;
    }
    
    #shoe-grid {
        grid-template-columns: 1fr;
    }
    
    .size-filter-toggle-btn {
        width: 100%;
        margin-top: 15px;
    }

    header h1 {
        font-size: 1.8rem;
    }
    
    .size-filter-panel {
        position: fixed;
        left: 0;
        right: 0;
        top: auto;
        bottom: 0;
        max-height: 60vh;
        border-radius: 8px 8px 0 0;
    }
    
    .language-selector {
        position: static;
        margin-bottom: 15px;
    }
}

.sort-btn {
    padding: 10px 12px;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.2s;
    white-space: nowrap;
}

.sort-btn:hover {
    background-color: #e5e7eb;
}

.sort-btn.active {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

@media (max-width: 768px) {
    .sort-controls {
        order: 3;
        width: 100%;
        margin: 10px 0 0 0;
    }
    
    .sort-btn {
        flex: 1;
        justify-content: center;
    }
}

/* Lightbox styles */
.lightbox {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    overflow: auto;
    text-align: center;
    pointer-events: auto;
}

.lightbox-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: zoom-in;
    transition: transform 0.25s ease;
}

.lightbox > * {
    pointer-events: none;
}

.lightbox-content, .close-btn {
    pointer-events: auto;
}

.lightbox-content.zoomed {
    transform: translate(-50%, -50%) scale(2);
    cursor: grab;
}

.lightbox-caption {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    color: white;
    text-align: center;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.7);
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
}

.close-btn:hover {
    color: #ccc;
}