:root {
    --color-primary: #FF6B00;
    --color-primary-dark: #E55D00;
    --color-primary-light: #FF8533;
    --color-white: #FFFFFF;
    --color-bg: #F8F9FA;
    --color-gray-100: #F1F3F5;
    --color-gray-200: #E9ECEF;
    --color-gray-300: #DEE2E6;
    --color-gray-400: #CED4DA;
    --color-gray-500: #ADB5BD;
    --color-gray-600: #6C757D;
    --color-gray-700: #495057;
    --color-gray-800: #343A40;
    --color-gray-900: #212529;
    --color-danger: #DC3545;
    --color-success: #28A745;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --transition: all 0.2s ease;
}

/* Reset и базовые стили */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-gray-800);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Контейнер */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* хедеры */
.header {
    background: var(--color-white);
    border-bottom: 3px solid var(--color-primary);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    position: relative;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-white);
    border-radius: 2px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-gray-900);
    letter-spacing: 2px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-gray-700);
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}

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

.nav-link-primary {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    border-bottom: none !important;
}

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

/* ============================================
   MAIN CONTENT
   ============================================ */
.main {
    flex: 1;
    padding: 32px 0;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-gray-200);
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
}

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

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

.btn-secondary {
    background: var(--color-gray-800);
    color: var(--color-white);
}

.btn-secondary:hover {
    background: var(--color-gray-900);
}

.btn-outline {
    background: transparent;
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-300);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.btn-danger:hover {
    background: #c82333;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-weight: 500;
}

.alert-success {
    background: #D4EDDA;
    color: #155724;
    border-left: 4px solid var(--color-success);
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: 80px 24px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--color-gray-300);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--color-gray-100);
    border-radius: 50%;
    position: relative;
}

.empty-state-icon::before {
    content: '+';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 40px;
    color: var(--color-gray-400);
}

.empty-state h2 {
    font-size: 1.5rem;
    color: var(--color-gray-800);
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--color-gray-600);
    margin-bottom: 24px;
}

/* ============================================
   PRODUCTS GRID
   ============================================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--color-primary);
}

.product-image {
    height: 200px;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.no-image {
    color: var(--color-gray-500);
    font-size: 0.9rem;
}

.product-info {
    padding: 20px;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 4px;
    line-height: 1.4;
}

.product-producer {
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.product-characteristics {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.characteristic-badge {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    border-left: 2px solid var(--color-primary);
}

.product-actions {
    padding: 16px 20px;
    border-top: 1px solid var(--color-gray-100);
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.delete-form {
    margin: 0;
}

/* ============================================
   FORMS
   ============================================ */
.product-form {
    max-width: 900px;
}

.form-section {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.subsection-title {
    font-size: 1rem;
    color: var(--color-gray-700);
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.1);
}

.form-control-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-control::placeholder {
    color: var(--color-gray-500);
}

.form-error {
    display: block;
    color: var(--color-danger);
    font-size: 0.85rem;
    margin-top: 6px;
}

/* Characteristics */
.characteristic-row {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 12px;
    align-items: start;
    margin-bottom: 12px;
    padding: 16px;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
}

.characteristic-row .form-group {
    margin-bottom: 0;
}

.remove-characteristic {
    margin-top: 0;
    padding: 8px 12px;
    font-size: 1.2rem;
    line-height: 1;
}

/* File Upload */
.file-upload {
    position: relative;
}

.file-input {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-gray-100);
    cursor: pointer;
    transition: var(--transition);
}

.file-upload:hover .file-label {
    border-color: var(--color-primary);
    background: rgba(255, 107, 0, 0.05);
}

.file-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: 50%;
    margin-bottom: 12px;
    position: relative;
}

.file-icon::before {
    content: '+';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    color: var(--color-white);
}

.file-text {
    color: var(--color-gray-600);
    font-size: 0.95rem;
}

/* Image Preview */
.image-preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.image-preview {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--color-gray-200);
}

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

.image-preview-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: var(--color-danger);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
}

/* Existing Images */
.existing-images {
    margin-bottom: 24px;
}

.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 16px;
}

.image-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--color-gray-200);
}

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

.image-delete-form {
    position: absolute;
    top: 8px;
    right: 8px;
}

.image-delete-form button {
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 50%;
    font-size: 16px;
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 16px;
    padding-top: 16px;
}

/* ============================================
   PRODUCT DETAILS
   ============================================ */
.product-details {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 32px;
}

@media (max-width: 900px) {
    .product-details {
        grid-template-columns: 1fr;
    }
}

.details-main {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
}

.product-gallery {
    margin-bottom: 24px;
}

.gallery-main {
    aspect-ratio: 4/3;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 16px;
}

.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.gallery-thumbs {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.gallery-thumb {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid var(--color-gray-200);
    transition: var(--transition);
}

.gallery-thumb:hover {
    border-color: var(--color-primary);
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.no-image-large {
    aspect-ratio: 4/3;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
    font-size: 1.1rem;
    margin-bottom: 24px;
}

.product-info-details {
    padding-top: 16px;
    border-top: 1px solid var(--color-gray-200);
}

.info-block {
    margin-bottom: 20px;
}

.info-label {
    display: block;
    font-size: 0.85rem;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
}

.info-value {
    font-size: 1rem;
    color: var(--color-gray-800);
}

.info-value.description {
    line-height: 1.8;
    white-space: pre-wrap;
}

.details-sidebar {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    height: fit-content;
}

.characteristics-table {
    display: flex;
    flex-direction: column;
}

.char-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.char-row:last-child {
    border-bottom: none;
}

.char-title {
    color: var(--color-gray-600);
    font-size: 0.9rem;
}

.char-value {
    color: var(--color-gray-800);
    font-weight: 500;
    text-align: right;
}

.details-actions {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--color-gray-200);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    padding: 24px 0;
    text-align: center;
}

.footer p {
    color: var(--color-gray-500);
    font-size: 0.9rem;
}

/* ============================================
   IMAGE DELETE BUTTON
   ============================================ */
.image-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--color-gray-200);
    transition: var(--transition);
}

.image-item.marked-for-delete {
    border-color: var(--color-danger);
}

.image-delete-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 50%;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.9;
    transition: var(--transition);
}

.image-delete-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}

.undo-delete-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 50%;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   NOTIFICATIONS
   ============================================ */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    font-weight: 500;
    z-index: 1000;
    transform: translateX(120%);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-lg);
    max-width: 400px;
}

.notification.show {
    transform: translateX(0);
}

.notification-success {
    background: var(--color-success);
    color: var(--color-white);
}

.notification-error {
    background: var(--color-danger);
    color: var(--color-white);
}

/* ============================================
   BUTTON STATES
   ============================================ */
.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

.btn-loader {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-loader::before {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 16px;
    }

    .page-header {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }

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

    .characteristic-row {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }

    .notification {
        left: 20px;
        right: 20px;
        max-width: none;
    }
}