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

body {
    font-family: 'Calibri', sans-serif;
    background-color: #F5F5F5; /* белый дым */
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Шапка */
header {
    background-color: #696969; /* темно-серый */
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 500;
    color: white;
}

/* Навигация */
nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background-color 0.3s;
    font-weight: 500;
}

nav ul li a:hover {
    background-color: #E0E0E0; /* светло-серый */
    color: #696969;
}

nav ul li a.active {
    background-color: #E0E0E0;
    color: #696969;
    font-weight: 600;
}

.btn-add {
    background-color: #E0E0E0;
    color: #696969 !important;
    font-weight: 600;
}

/* Поиск */
.search-bar {
    flex: 1;
    max-width: 400px;
    margin-left: 20px;
}

.search-bar form {
    display: flex;
    gap: 5px;
}

.search-bar input,
.search-bar select {
    padding: 8px 12px;
    border: none;
    border-radius: 4px;
    font-family: 'Calibri', sans-serif;
}

.search-bar input {
    flex: 1;
}

.search-bar button {
    padding: 8px 15px;
    background-color: #E0E0E0;
    color: #696969;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: opacity 0.3s;
}

.search-bar button:hover {
    opacity: 0.9;
}

/* Основной контент */
main {
    flex: 1;
    padding: 30px 0;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h2 {
    font-size: 2rem;
    color: #696969;
    font-weight: 500;
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* Кнопки */
.btn-export,
.btn-import,
.btn-view,
.btn-edit,
.btn-back,
.btn-submit {
    display: inline-block;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-family: 'Calibri', sans-serif;
    font-size: 1rem;
}

.btn-export {
    background-color: #696969;
    color: white;
}

.btn-import {
    background-color: #E0E0E0;
    color: #696969;
}

.btn-view {
    background-color: #F5F5F5;
    color: #696969;
    border: 1px solid #E0E0E0;
}

.btn-edit {
    background-color: #E0E0E0;
    color: #696969;
}

.btn-back {
    background-color: #F5F5F5;
    color: #696969;
    border: 1px solid #E0E0E0;
}

.btn-submit {
    background-color: #696969;
    color: white;
    padding: 12px 30px;
    font-size: 1.1rem;
}

.btn-export:hover,
.btn-submit:hover {
    background-color: #555;
}

.btn-import:hover,
.btn-edit:hover {
    background-color: #D0D0D0;
}

/* Карточки заказов */
.orders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.order-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
}

.order-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.order-header {
    background-color: #E0E0E0;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.order-header h3 {
    font-size: 1.2rem;
    color: #696969;
}

.order-status {
    padding: 3px 8px;
    border-radius: 3px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-новый {
    background-color: #4CAF50;
    color: white;
}

.status-в_обработке {
    background-color: #FFC107;
    color: #333;
}

.status-завершен {
    background-color: #2196F3;
    color: white;
}

.order-body {
    padding: 15px;
    flex: 1;
}

.order-body p {
    margin-bottom: 8px;
}

.order-items-preview {
    margin: 15px 0;
    padding: 10px;
    background-color: #F5F5F5;
    border-radius: 4px;
}

.order-items-preview ul {
    margin-top: 5px;
    margin-left: 20px;
}

.order-total {
    margin-top: 15px;
    padding-top: 10px;
    border-top: 2px solid #E0E0E0;
}

.subtotal {
    font-size: 0.95rem;
    color: #666;
}

.discount {
    color: #4CAF50;
    font-size: 0.95rem;
}

.total {
    font-size: 1.2rem;
    margin-top: 5px;
}

.order-footer {
    padding: 15px;
    background-color: #F5F5F5;
    display: flex;
    gap: 10px;
}

/* Таблицы */
.items-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-top: 20px;
}

.items-table thead {
    background-color: #696969;
    color: white;
}

.items-table th,
.items-table td {
    padding: 12px 15px;
    text-align: left;
}

.items-table tbody tr {
    border-bottom: 1px solid #E0E0E0;
}

.items-table tbody tr:hover {
    background-color: #F5F5F5;
}

.items-table tfoot {
    background-color: #E0E0E0;
    font-weight: 500;
}

.items-table .total-row {
    background-color: #696969;
    color: white;
}

.text-right {
    text-align: right;
}

/* Формы */
.order-form {
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #E0E0E0;
}

.form-section h3 {
    color: #696969;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #E0E0E0;
    border-radius: 4px;
    font-family: 'Calibri', sans-serif;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #696969;
}

.item-row {
    margin-bottom: 15px;
    padding: 15px;
    background-color: #F5F5F5;
    border-radius: 4px;
}

.item-fields {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr auto;
    gap: 10px;
    align-items: end;
}

.item-total {
    padding-bottom: 10px;
    font-weight: 600;
    color: #696969;
}

.btn-add-item,
.btn-remove-item {
    padding: 8px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.btn-add-item {
    background-color: #696969;
    color: white;
    width: 100%;
    padding: 12px;
    margin-top: 10px;
}

.btn-remove-item {
    background-color: #ff6b6b;
    color: white;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.btn-add-item:hover {
    background-color: #555;
}

.btn-remove-item:hover {
    background-color: #ff5252;
}

.form-actions {
    text-align: center;
    margin-top: 30px;
}

/* Карточки товаров и поставщиков */
.products-grid,
.suppliers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.product-card,
.supplier-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.product-card:hover,
.supplier-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

.product-header,
.supplier-header {
    background-color: #E0E0E0;
    padding: 15px;
}

.product-header h3,
.supplier-header h3 {
    color: #696969;
    font-size: 1.2rem;
}

.product-body,
.supplier-body {
    padding: 15px;
}

.product-body p,
.supplier-body p {
    margin-bottom: 8px;
}

.in-stock {
    color: #4CAF50;
    font-weight: 600;
}

.out-of-stock {
    color: #ff6b6b;
    font-weight: 600;
}

.product-footer,
.supplier-footer {
    padding: 15px;
    background-color: #F5F5F5;
    text-align: center;
}

/* Результаты поиска */
.search-results {
    list-style: none;
}

.search-result-item {
    background: white;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.search-result-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

.result-type {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 3px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.result-type.order {
    background-color: #2196F3;
    color: white;
}

.result-type.product {
    background-color: #4CAF50;
    color: white;
}

.result-type.supplier {
    background-color: #FF9800;
    color: white;
}

/* Уведомления */
.alert {
    padding: 12px 20px;
    border-radius: 4px;
    margin-bottom: 20px;
    animation: slideIn 0.3s;
}

@keyframes slideIn {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

/* Пустое состояние */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.empty-state p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 20px;
}

/* Футер */
footer {
    background-color: #696969;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
}

/* Адаптивность */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .search-bar {
        max-width: 100%;
        margin-left: 0;
    }
    
    .orders-grid {
        grid-template-columns: 1fr;
    }
    
    .item-fields {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .items-table {
        font-size: 0.9rem;
    }
    
    .items-table th,
    .items-table td {
        padding: 8px 10px;
    }
}