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

:root {
    --bg-color: var(--tg-theme-bg-color, #ffffff);
    --text-color: var(--tg-theme-text-color, #000000);
    --hint-color: var(--tg-theme-hint-color, #999999);
    --link-color: var(--tg-theme-link-color, #2481cc);
    --button-color: var(--tg-theme-button-color, #2481cc);
    --button-text-color: var(--tg-theme-button-text-color, #ffffff);
    --secondary-bg-color: var(--tg-theme-secondary-bg-color, #f1f1f1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    padding-bottom: 20px;
    overflow-x: hidden;
}

/* Заголовок */
.header {
    position: sticky;
    top: 0;
    background: var(--bg-color);
    border-bottom: 1px solid var(--secondary-bg-color);
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.header-content {
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 20px;
    font-weight: 600;
}

.user-info {
    font-size: 12px;
    color: var(--hint-color);
}

/* Табы */
.tabs {
    display: flex;
    padding: 0 8px;
    gap: 8px;
    overflow-x: auto;
}

.tab {
    flex: 1;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--hint-color);
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s;
}

.tab.active {
    color: var(--button-color);
    border-bottom-color: var(--button-color);
    font-weight: 600;
}

/* Основной контент */
.main {
    padding: 16px;
}

.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); }
}

/* Фильтры */
.filters {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.filter-select, .search-input {
    flex: 1;
    min-width: 120px;
    padding: 10px 12px;
    border: 1px solid var(--secondary-bg-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
}

/* Сетка товаров */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

/* Карточка товара */
.product-card {
    background: var(--secondary-bg-color);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.product-card:active {
    transform: scale(0.98);
}

.product-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.product-card-body {
    padding: 12px;
}

.product-card-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.product-card-category {
    font-size: 11px;
    color: var(--hint-color);
    margin-bottom: 6px;
}

.product-card-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--button-color);
}

.product-card-status {
    margin-top: 6px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    text-align: center;
}

.product-card-status.sold {
    background: #ff4444;
    color: white;
}

.product-card-status.active {
    background: #00c851;
    color: white;
}

/* FAB кнопка */
.fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--button-color);
    color: var(--button-text-color);
    border: none;
    font-size: 24px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    cursor: pointer;
    z-index: 1000;
    transition: transform 0.2s;
}

.fab:active {
    transform: scale(0.95);
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    animation: fadeIn 0.3s;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-color);
    border-radius: 16px;
    padding: 24px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s;
}

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: var(--hint-color);
}

/* Детали товара */
#productDetails img {
    width: 100%;
    border-radius: 12px;
    margin: 16px 0;
}

.detail-row {
    padding: 12px 0;
    border-bottom: 1px solid var(--secondary-bg-color);
}

.detail-label {
    font-size: 12px;
    color: var(--hint-color);
    margin-bottom: 4px;
}

.detail-value {
    font-size: 16px;
    font-weight: 500;
}

.action-buttons {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

/* Форма */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--secondary-bg-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    font-family: inherit;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.photo-preview {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.photo-preview img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
}

/* Кнопки */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
    flex: 1;
}

.btn:active {
    opacity: 0.8;
}

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

.btn-danger {
    background: #ff4444;
    color: white;
}

.btn-success {
    background: #00c851;
    color: white;
}

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

/* Статистика */
.stats-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.stat-card {
    background: var(--secondary-bg-color);
    border-radius: 12px;
    padding: 16px;
}

.stat-card h3 {
    font-size: 16px;
    margin-bottom: 12px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--bg-color);
}

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

.stat-row span {
    color: var(--hint-color);
    font-size: 14px;
}

.stat-row strong {
    font-size: 16px;
    color: var(--text-color);
}

/* Загрузчик */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px 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); }
}

/* Пустое состояние */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--hint-color);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state-text {
    font-size: 16px;
}

/* Адаптив */
@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
    
    .modal-content {
        width: 95%;
        padding: 16px;
    }
}