/* ===============================
   GLOBAL
=============================== */

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

body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    color: #333;
}

/* ===============================
   NAVBAR
=============================== */

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: white;
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.navbar-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.back-link,
.basket-link {
    font-weight: 600;
    color: #111;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.basket-count {
    background: #7c3aed;
    color: white;
    border-radius: 50%;
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
}

/* ===============================
   MAIN CONTAINER
=============================== */

.customization-container {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

/* ===============================
   LEFT: PREVIEW
=============================== */

.preview-section {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.preview-box {
    position: relative;
    width: 100%;
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.preview-box img {
    width: 100%;
    display: block;
    border-radius: 12px;
}

.logo-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.logo-overlay img {
    max-width: 150px;
    opacity: 0.9;
}

/* THUMBNAILS */
.thumbnail-scroll {
    margin-top: 20px;
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 10px;
}

.thumbnail-scroll::-webkit-scrollbar {
    height: 6px;
}

.thumbnail-scroll::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 10px;
}

.color-thumb {
    flex: 0 0 60px;
    width: 60px;
    height: 60px;
    border-radius: 8px;
    border: 3px solid transparent;
    background-size: cover;
    background-position: center;
    cursor: pointer;
    transition: all 0.2s;
}

.color-thumb:hover {
    border-color: #7c3aed;
}

.color-thumb.active {
    border-color: #7c3aed;
    box-shadow: 0 0 0 2px rgba(124,58,237,0.2);
}

/* ===============================
   RIGHT: TOOLS
=============================== */

.tools-section {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.product-header {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.product-code {
    font-size: 12px;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
}

.product-header h1 {
    font-size: 24px;
    font-weight: 800;
    margin: 8px 0;
    color: #111;
}

.product-price {
    font-size: 28px;
    font-weight: 900;
    color: #7c3aed;
}

/* ===============================
   TABS
=============================== */

.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 2px solid #e5e5e5;
}

.tab {
    padding: 12px 20px;
    border: none;
    background: none;
    font-size: 14px;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
}

.tab:hover {
    color: #7c3aed;
}

.tab.active {
    color: #7c3aed;
    border-bottom-color: #7c3aed;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #111;
}

/* ===============================
   COLOR GRID
=============================== */

.color-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.color-swatch {
    aspect-ratio: 1;
    border-radius: 8px;
    border: 3px solid #ddd;
    background-size: cover;
    background-position: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.color-swatch:hover {
    transform: scale(1.05);
    border-color: #7c3aed;
}

.color-swatch.active {
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124,58,237,0.2);
}

.color-swatch::after {
    content: attr(data-name);
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.2s;
}

.color-swatch:hover::after {
    opacity: 1;
}

/* ===============================
   SIZES GRID
=============================== */

.sizes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
}

.size-box {
    background: #f5f5f5;
    padding: 16px;
    border-radius: 12px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.2s;
}

.size-box.active {
    background: #ede9fe;
    border-color: #7c3aed;
}

.size-label {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 12px;
}

.qty-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.qty-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    background: #7c3aed;
    color: white;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-btn:hover {
    background: #6d28d9;
}

.qty-input {
    width: 50px;
    height: 32px;
    border: 1px solid #ccc;
    border-radius: 6px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
}

/* ===============================
   UPLOAD AREA
=============================== */

.upload-area {
    border: 3px dashed #ccc;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: #fafafa;
}

.upload-area:hover {
    border-color: #7c3aed;
    background: #f5f3ff;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.upload-hint {
    font-size: 12px;
    color: #999;
    margin-top: 8px;
}

.logo-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    margin-top: 20px;
}

.logo-preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    border: 2px solid #e5e5e5;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    background-color: white;
}

.logo-preview-item .remove-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #ef4444;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
}

.logo-options {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 2px solid #f0f0f0;
}

.logo-options h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #111;
}

.placement-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.placement-btn {
    padding: 12px;
    border: 2px solid #e5e5e5;
    border-radius: 8px;
    background: white;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.placement-btn:hover {
    border-color: #7c3aed;
    background: #f5f3ff;
}

.placement-btn.active {
    border-color: #7c3aed;
    background: #7c3aed;
    color: white;
}

#logoSize {
    width: 100%;
    margin-top: 8px;
}

#logoSizeValue {
    display: inline-block;
    margin-left: 10px;
    font-weight: 600;
    color: #7c3aed;
}

/* ===============================
   TEXT OPTIONS
=============================== */

.text-options {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.text-options label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
}

.text-options input,
.text-options select {
    padding: 10px 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 14px;
}

.text-options input:focus,
.text-options select:focus {
    outline: none;
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124,58,237,0.1);
}

/* ===============================
   SUMMARY & ACTION
=============================== */

.summary-box {
    margin-top: 30px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 12px;
    border: 1px solid #e5e5e5;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
}

.summary-row.total {
    margin-top: 8px;
    padding-top: 12px;
    border-top: 2px solid #e5e5e5;
    font-size: 18px;
    font-weight: 700;
}

.summary-row.total span:last-child {
    color: #7c3aed;
    font-size: 24px;
}

.btn-add-to-quote {
    width: 100%;
    margin-top: 20px;
    padding: 16px;
    border: none;
    border-radius: 12px;
    background: #7c3aed;
    color: white;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-add-to-quote:hover:not(:disabled) {
    background: #6d28d9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(124,58,237,0.3);
}

.btn-add-to-quote:disabled {
    background: #ccc;
    cursor: not-allowed;
}

/* ===============================
   FOOTER
=============================== */

.footer {
    background: #f8f9fa;
    padding: 30px 20px;
    text-align: center;
    border-top: 1px solid #e5e7eb;
    margin-top: 60px;
}

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

@media (max-width: 1024px) {
    .customization-container {
        grid-template-columns: 1fr;
    }
    
    .preview-section {
        position: relative;
        top: 0;
    }
}

@media (max-width: 640px) {
    .color-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    }
    
    .sizes-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}