/* ============================================================
   B2B СИСТЕМА — Стили
   Вписываются в дизайн темы piastrella
   ============================================================ */

/* CSS переменные (наследуются от piastrella) */
:root {
    --b2b-green: #0d522c;
    --b2b-dark-green: #0a3e21;
    --b2b-light-green: #1a7a4a;
    --b2b-accent: #e85d26;
    --b2b-white: #fff;
    --b2b-bg: #f5f6f8;
    --b2b-card-bg: #fff;
    --b2b-text: #333;
    --b2b-text-muted: #777;
    --b2b-border: #e0e0e0;
    --b2b-radius: 8px;
    --b2b-shadow: 0 2px 12px rgba(0,0,0,.08);
    --b2b-transition: .2s ease;
}

/* ── LAYOUT ── */
.b2b-page {
    min-height: 70vh;
    background: var(--b2b-bg);
    padding: 40px 24px;
}

.b2b-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.b2b-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.b2b-header h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--b2b-dark-green);
    margin: 0;
}

.b2b-header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* ── LOGIN PAGE ── */
.b2b-login-page {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--b2b-dark-green) 0%, var(--b2b-green) 50%, var(--b2b-light-green) 100%);
    padding: 40px 24px;
}

.b2b-login-card {
    background: var(--b2b-white);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,.2);
    padding: 48px 40px;
    max-width: 420px;
    width: 100%;
    text-align: center;
}

.b2b-login-card .login-logo {
    margin-bottom: 8px;
}

.b2b-login-card .login-logo img {
    height: 40px;
    filter: none;
}

.b2b-login-card h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--b2b-dark-green);
    margin-bottom: 8px;
}

.b2b-login-card .login-subtitle {
    color: var(--b2b-text-muted);
    font-size: 14px;
    margin-bottom: 32px;
}

.b2b-login-card .form-group {
    margin-bottom: 20px;
    text-align: left;
}

.b2b-login-card .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--b2b-text);
    margin-bottom: 6px;
    font-family: 'Montserrat', sans-serif;
}

.b2b-login-card .form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--b2b-border);
    border-radius: var(--b2b-radius);
    font-size: 14px;
    font-family: 'PT Sans', sans-serif;
    transition: border-color var(--b2b-transition);
    outline: none;
}

.b2b-login-card .form-group input:focus {
    border-color: var(--b2b-green);
    box-shadow: 0 0 0 3px rgba(13,82,44,.1);
}

.b2b-login-error {
    background: #fff0f0;
    border: 1px solid #ffcccc;
    color: #c00;
    padding: 10px 16px;
    border-radius: var(--b2b-radius);
    margin-bottom: 20px;
    font-size: 13px;
    text-align: left;
}

/* ── BUTTONS ── */
.b2b-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--b2b-radius);
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--b2b-transition);
    text-decoration: none;
    white-space: nowrap;
}

.b2b-btn-primary {
    background: var(--b2b-green);
    color: var(--b2b-white);
}

.b2b-btn-primary:hover {
    background: var(--b2b-dark-green);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(13,82,44,.3);
}

.b2b-btn-secondary {
    background: var(--b2b-white);
    color: var(--b2b-text);
    border: 1px solid var(--b2b-border);
}

.b2b-btn-secondary:hover {
    background: var(--b2b-bg);
    border-color: #ccc;
}

.b2b-btn-accent {
    background: var(--b2b-accent);
    color: var(--b2b-white);
}

.b2b-btn-accent:hover {
    background: #d04d1a;
    transform: translateY(-1px);
}

.b2b-btn-danger {
    background: #dc3545;
    color: var(--b2b-white);
}

.b2b-btn-danger:hover {
    background: #c82333;
}

.b2b-btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

.b2b-btn-full {
    width: 100%;
}

.b2b-btn-logout {
    background: transparent;
    color: var(--b2b-text-muted);
    border: 1px solid var(--b2b-border);
    padding: 8px 16px;
    font-size: 12px;
}

.b2b-btn-logout:hover {
    color: #c00;
    border-color: #c00;
}

/* ── CARDS ── */
.b2b-card {
    background: var(--b2b-card-bg);
    border-radius: var(--b2b-radius);
    box-shadow: var(--b2b-shadow);
    padding: 24px;
    margin-bottom: 20px;
}

.b2b-card-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    font-weight: 700;
    color: var(--b2b-dark-green);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--b2b-border);
}

/* ── STATS GRID ── */
.b2b-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.b2b-stat-card {
    background: var(--b2b-card-bg);
    border-radius: var(--b2b-radius);
    box-shadow: var(--b2b-shadow);
    padding: 24px;
    text-align: center;
    border-left: 4px solid var(--b2b-green);
}

.b2b-stat-value {
    font-family: 'Montserrat', sans-serif;
    font-size: 32px;
    font-weight: 800;
    color: var(--b2b-dark-green);
    line-height: 1;
    margin-bottom: 4px;
}

.b2b-stat-label {
    font-size: 13px;
    color: var(--b2b-text-muted);
}

/* ── INFO LIST ── */
.b2b-info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.b2b-info-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 14px;
}

.b2b-info-list li:last-child {
    border-bottom: none;
}

.b2b-info-label {
    color: var(--b2b-text-muted);
    font-size: 13px;
}

.b2b-info-value {
    font-weight: 600;
    color: var(--b2b-text);
}

/* ── TABLE ── */
.b2b-table-wrap {
    overflow-x: auto;
    margin: 0 -24px;
    padding: 0 24px;
}

.b2b-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.b2b-table th {
    background: var(--b2b-bg);
    color: var(--b2b-text-muted);
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .5px;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 2px solid var(--b2b-border);
    white-space: nowrap;
}

.b2b-table td {
    padding: 12px 16px;
    border-bottom: 1px solid #f0f0f0;
    vertical-align: middle;
}

.b2b-table tr:hover td {
    background: #fafbfc;
}

.b2b-table .actions {
    display: flex;
    gap: 8px;
    white-space: nowrap;
}

/* ── STOCK LABELS ── */
.b2b-stock {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
}

.stock-ok {
    background: #e6f7ed;
    color: #0d7a3e;
}

.stock-low {
    background: #fff8e6;
    color: #b8860b;
}

.stock-none {
    background: #f0f0f0;
    color: #999;
}

/* ── FORMS ── */
.b2b-form {
    max-width: 600px;
}

.b2b-form .form-group {
    margin-bottom: 20px;
}

.b2b-form .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--b2b-text);
    margin-bottom: 6px;
    font-family: 'Montserrat', sans-serif;
}

.b2b-form .form-group input,
.b2b-form .form-group select,
.b2b-form .form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--b2b-border);
    border-radius: var(--b2b-radius);
    font-size: 14px;
    font-family: 'PT Sans', sans-serif;
    transition: border-color var(--b2b-transition);
    outline: none;
    background: var(--b2b-white);
}

.b2b-form .form-group input:focus,
.b2b-form .form-group select:focus {
    border-color: var(--b2b-green);
    box-shadow: 0 0 0 3px rgba(13,82,44,.1);
}

.b2b-form .form-hint {
    font-size: 12px;
    color: var(--b2b-text-muted);
    margin-top: 4px;
}

.b2b-form .form-actions {
    display: flex;
    gap: 12px;
    margin-top: 28px;
}

/* ── COMPANIES LIST (юр. лица) ── */
.b2b-companies {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.b2b-company-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--b2b-bg);
    padding: 12px 16px;
    border-radius: var(--b2b-radius);
    font-size: 14px;
}

.b2b-company-name {
    font-weight: 600;
}

.b2b-company-inn {
    color: var(--b2b-text-muted);
    font-size: 13px;
}

/* ── CATALOG GRID ── */
.b2b-catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.b2b-product-card {
    background: var(--b2b-card-bg);
    border-radius: var(--b2b-radius);
    box-shadow: var(--b2b-shadow);
    overflow: hidden;
    transition: transform var(--b2b-transition), box-shadow var(--b2b-transition);
}

.b2b-product-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
}

.b2b-product-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    background: #f0f0f0;
}

.b2b-product-body {
    padding: 16px;
}

.b2b-product-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--b2b-text);
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.b2b-product-article {
    font-size: 12px;
    color: var(--b2b-text-muted);
    margin-bottom: 12px;
}

.b2b-product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.b2b-product-price {
    font-family: 'Montserrat', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--b2b-dark-green);
}

/* ── PAGINATION ── */
.b2b-pagination {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: 32px;
}

.b2b-pagination a,
.b2b-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 8px;
    border-radius: var(--b2b-radius);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--b2b-transition);
}

.b2b-pagination a {
    color: var(--b2b-text);
    border: 1px solid var(--b2b-border);
}

.b2b-pagination a:hover {
    background: var(--b2b-green);
    color: var(--b2b-white);
    border-color: var(--b2b-green);
}

.b2b-pagination .active {
    background: var(--b2b-green);
    color: var(--b2b-white);
    border: 1px solid var(--b2b-green);
}

/* ── SEARCH BAR ── */
.b2b-search {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.b2b-search input {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid var(--b2b-border);
    border-radius: var(--b2b-radius);
    font-size: 14px;
    outline: none;
    transition: border-color var(--b2b-transition);
}

.b2b-search input:focus {
    border-color: var(--b2b-green);
    box-shadow: 0 0 0 3px rgba(13,82,44,.1);
}

/* ── ALERT / MESSAGES ── */
.b2b-alert {
    padding: 14px 20px;
    border-radius: var(--b2b-radius);
    margin-bottom: 20px;
    font-size: 14px;
}

.b2b-alert-success {
    background: #e6f7ed;
    border: 1px solid #b8e6c8;
    color: #0d7a3e;
}

.b2b-alert-error {
    background: #fff0f0;
    border: 1px solid #ffcccc;
    color: #c00;
}

.b2b-alert-info {
    background: #e8f4fd;
    border: 1px solid #b8daf0;
    color: #1565c0;
}

/* ── BREADCRUMB / NAV ── */
.b2b-breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 13px;
    margin-bottom: 24px;
    color: var(--b2b-text-muted);
}

.b2b-breadcrumb a {
    color: var(--b2b-green);
    text-decoration: none;
}

.b2b-breadcrumb a:hover {
    text-decoration: underline;
}

.b2b-breadcrumb .sep {
    color: #ccc;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .b2b-page {
        padding: 20px 16px;
    }

    .b2b-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .b2b-header h1 {
        font-size: 22px;
    }

    .b2b-login-card {
        padding: 32px 24px;
    }

    .b2b-stats {
        grid-template-columns: 1fr;
    }

    .b2b-catalog-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 12px;
    }

    .b2b-table th,
    .b2b-table td {
        padding: 8px 12px;
        font-size: 13px;
    }

    .b2b-form {
        max-width: 100%;
    }

    .b2b-search {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .b2b-catalog-grid {
        grid-template-columns: 1fr;
    }

    .b2b-product-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}