:root {
    --app-bg: #f3f6fa;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --surface-strong: #eef3f7;
    --text-primary: #172033;
    --text-secondary: #526078;
    --text-muted: #7b879b;
    --border-color: #dfe6ef;
    --border-strong: #c8d2df;
    --primary: #126a82;
    --primary-hover: #0f5b70;
    --primary-active: #0b4b5d;
    --primary-soft: #e8f4f7;
    --success: #18794e;
    --success-soft: #e8f6ef;
    --warning: #9a6700;
    --warning-soft: #fff7db;
    --danger: #b42336;
    --danger-soft: #fff0f2;
    --info: #2563a5;
    --active-brand-primary: #1a237e;
    --active-brand-secondary: #003366;
    --active-brand-accent: #c5a059;
    --radius-sm: 0.375rem;
    --radius-md: 0.625rem;
    --radius-lg: 0.875rem;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 12px 30px rgba(15, 23, 42, 0.09);
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --sidebar-width: 16.5rem;
    --topbar-height: 4.5rem;
}

body {
    color: var(--text-primary);
    background: var(--app-bg);
    font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
}

.app-shell {
    min-height: 100vh;
}

.app-sidebar {
    position: fixed;
    z-index: 1040;
    inset: 0 auto 0 0;
    display: flex;
    width: var(--sidebar-width);
    flex-direction: column;
    color: #e7edf5;
    background: #172033;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand {
    padding: 1.35rem 1.25rem 1.2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.platform-wordmark {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    color: #fff;
    text-decoration: none;
}

.platform-mark {
    display: grid;
    width: 2.5rem;
    height: 2.5rem;
    place-items: center;
    flex: 0 0 auto;
    color: #fff;
    background: var(--primary);
    border-radius: var(--radius-md);
    font-size: 1.15rem;
    font-weight: 800;
}

.platform-wordmark strong,
.platform-wordmark small {
    display: block;
}

.platform-wordmark strong {
    font-size: 1.08rem;
    letter-spacing: 0.01em;
}

.platform-wordmark small {
    margin-top: 0.1rem;
    color: #aeb9ca;
    font-size: 0.72rem;
}

.sidebar-nav {
    display: grid;
    gap: 0.25rem;
    padding: 1.25rem 0.875rem;
}

.sidebar-section-label {
    padding: 0 0.75rem 0.5rem;
    color: #8492a8;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.sidebar-link {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    min-height: 2.75rem;
    padding: 0.65rem 0.75rem;
    color: #c9d2df;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: color 150ms ease, background-color 150ms ease;
}

.sidebar-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.07);
}

.sidebar-link.is-active {
    color: #fff;
    background: rgba(18, 106, 130, 0.32);
    border-color: rgba(103, 198, 221, 0.2);
}

.sidebar-link i {
    width: 1.25rem;
    font-size: 1rem;
    text-align: center;
}

.sidebar-user {
    margin-top: auto;
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-summary {
    display: flex;
    gap: 0.65rem;
    align-items: center;
    min-width: 0;
    margin-bottom: 0.8rem;
}

.user-summary small,
.user-summary strong {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-summary small {
    color: #93a1b5;
    font-size: 0.68rem;
}

.user-summary strong {
    color: #fff;
    font-size: 0.86rem;
}

.user-avatar {
    display: grid;
    width: 2.2rem;
    height: 2.2rem;
    place-items: center;
    flex: 0 0 auto;
    color: #d9f2f8;
    background: rgba(18, 106, 130, 0.36);
    border-radius: 50%;
}

.app-workspace {
    display: flex;
    min-height: 100vh;
    margin-left: var(--sidebar-width);
    flex-direction: column;
}

.app-topbar {
    position: sticky;
    z-index: 1020;
    top: 0;
    display: flex;
    min-height: var(--topbar-height);
    gap: 1rem;
    align-items: center;
    padding: 0.75rem 1.75rem;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.sidebar-toggle {
    display: none;
    width: 2.6rem;
    height: 2.6rem;
    place-items: center;
    color: var(--text-primary);
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
}

.topbar-title {
    min-width: 0;
}

.topbar-title span,
.topbar-title strong {
    display: block;
}

.topbar-title span {
    color: var(--text-muted);
    font-size: 0.72rem;
}

.topbar-title strong {
    overflow: hidden;
    font-size: 1rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topbar-actions {
    display: flex;
    gap: 0.85rem;
    align-items: center;
    margin-left: auto;
}

.brand-badge,
.status-badge {
    display: inline-flex;
    gap: 0.45rem;
    align-items: center;
    width: fit-content;
    padding: 0.35rem 0.65rem;
    color: var(--active-brand-primary);
    background: #f0f1fb;
    border: 1px solid #d8dbf2;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    white-space: nowrap;
}

.brand-badge-dot {
    width: 0.45rem;
    height: 0.45rem;
    background: var(--active-brand-accent);
    border-radius: 50%;
}

.topbar-user {
    display: inline-flex;
    gap: 0.4rem;
    align-items: center;
    max-width: 12rem;
    overflow: hidden;
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.app-main {
    flex: 1;
    padding: 1.75rem;
}

.content-container {
    width: min(100%, 92rem);
    margin: 0 auto;
}

.app-footer {
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.75rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
}

.page-header {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-eyebrow {
    margin: 0 0 0.25rem;
    color: var(--primary);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.page-title {
    margin: 0;
    color: var(--text-primary);
    font-size: clamp(1.5rem, 2vw, 2rem);
    font-weight: 750;
    letter-spacing: -0.025em;
}

.page-description {
    max-width: 46rem;
    margin: 0.4rem 0 0;
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.page-actions {
    display: flex;
    gap: 0.65rem;
    align-items: center;
    flex-wrap: wrap;
}

.surface-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.surface-card-header {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.2rem;
    border-bottom: 1px solid var(--border-color);
}

.surface-card-body {
    padding: 1.2rem;
}

.section-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
}

.section-hint {
    margin: 0.2rem 0 0;
    color: var(--text-muted);
    font-size: 0.78rem;
}

.btn-app {
    display: inline-flex;
    min-height: 2.6rem;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 0.95rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.84rem;
    font-weight: 700;
    line-height: 1.2;
    text-decoration: none;
    transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

.btn-app-primary {
    color: #fff;
    background: var(--primary);
}

.btn-app-primary:hover {
    color: #fff;
    background: var(--primary-hover);
}

.btn-app-secondary {
    color: var(--text-primary);
    background: var(--surface);
    border-color: var(--border-strong);
}

.btn-app-secondary:hover {
    color: var(--primary);
    background: var(--primary-soft);
    border-color: #b9dce4;
}

.btn-app-danger {
    color: var(--danger);
    background: var(--danger-soft);
    border-color: #f4cbd1;
}

.btn-app-ghost {
    color: #dce4ef;
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.16);
}

.btn-app-ghost:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.btn-app-block {
    width: 100%;
}

.btn-app:disabled,
.btn-app.is-loading {
    cursor: wait;
    opacity: 0.68;
}

.form-label-app {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
    font-size: 0.8rem;
    font-weight: 700;
}

.form-hint {
    display: block;
    margin-top: 0.35rem;
    color: var(--text-muted);
    font-size: 0.74rem;
}

.form-control-app {
    width: 100%;
    min-height: 2.75rem;
    padding: 0.65rem 0.75rem;
    color: var(--text-primary);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
}

.form-control-app:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(18, 106, 130, 0.12);
    outline: 0;
}

.form-control-app[readonly] {
    color: var(--text-secondary);
    background: var(--surface-muted);
}

.validation-summary-valid {
    display: none;
}

.validation-summary-errors,
.app-alert {
    padding: 0.8rem 0.9rem;
    border: 1px solid;
    border-radius: var(--radius-md);
    font-size: 0.82rem;
}

.validation-summary-errors,
.app-alert-danger {
    color: #7a1726;
    background: var(--danger-soft);
    border-color: #f0c4cb;
}

.app-alert-warning {
    color: #684500;
    background: var(--warning-soft);
    border-color: #f0d98a;
}

.app-alert-info {
    color: #164e63;
    background: var(--primary-soft);
    border-color: #b9dce4;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.stat-card {
    padding: 1.15rem;
}

.stat-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 650;
}

.stat-icon {
    display: grid;
    width: 2.25rem;
    height: 2.25rem;
    place-items: center;
    color: var(--primary);
    background: var(--primary-soft);
    border-radius: var(--radius-md);
}

.stat-value {
    margin-top: 0.65rem;
    font-size: 1.8rem;
    font-variant-numeric: tabular-nums;
    font-weight: 760;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(17rem, 1fr);
    gap: 1rem;
}

.quick-actions {
    display: grid;
    gap: 0.75rem;
}

.quick-action {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    padding: 0.85rem;
    color: var(--text-primary);
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
}

.quick-action:hover {
    color: var(--primary);
    border-color: #b9dce4;
}

.quick-action i {
    color: var(--primary);
    font-size: 1.1rem;
}

.app-table {
    width: 100%;
    margin: 0;
    border-collapse: collapse;
}

.app-table th,
.app-table td {
    padding: 0.8rem 0.9rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.app-table th {
    color: var(--text-secondary);
    background: var(--surface-muted);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.app-table td {
    font-size: 0.84rem;
}

.app-table tbody tr:last-child td {
    border-bottom: 0;
}

.empty-state {
    padding: 2.6rem 1rem;
    color: var(--text-secondary);
    text-align: center;
}

.empty-state-icon {
    display: grid;
    width: 3rem;
    height: 3rem;
    margin: 0 auto 0.8rem;
    place-items: center;
    color: var(--primary);
    background: var(--primary-soft);
    border-radius: 50%;
    font-size: 1.25rem;
}

.empty-state h2,
.empty-state h3 {
    margin: 0 0 0.35rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.empty-state p {
    max-width: 30rem;
    margin: 0 auto;
    font-size: 0.82rem;
}

.search-panel {
    margin-bottom: 1.25rem;
    padding: 1rem;
}

.search-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.65rem;
}

.search-input-wrap {
    position: relative;
}

.search-input-wrap i {
    position: absolute;
    top: 50%;
    left: 0.85rem;
    color: var(--text-muted);
    transform: translateY(-50%);
}

.search-input-wrap .form-control-app {
    padding-left: 2.5rem;
}

.offer-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 21rem;
    gap: 1.25rem;
    align-items: start;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.product-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    overflow: hidden;
}

.product-image-wrap {
    position: relative;
    display: grid;
    aspect-ratio: 4 / 3;
    place-items: center;
    padding: 0.8rem;
    background: var(--surface-muted);
    border-bottom: 1px solid var(--border-color);
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-image-placeholder {
    display: grid;
    width: 100%;
    height: 100%;
    place-items: center;
    color: var(--text-muted);
    background: var(--surface-strong);
    border-radius: var(--radius-md);
}

.product-card-body {
    display: flex;
    min-height: 11.5rem;
    flex: 1;
    flex-direction: column;
    padding: 1rem;
}

.product-name {
    display: -webkit-box;
    min-height: 2.7rem;
    margin: 0;
    overflow: hidden;
    font-size: 0.9rem;
    font-weight: 700;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.product-price-label {
    margin-top: auto;
    color: var(--text-muted);
    font-size: 0.7rem;
}

.product-price {
    margin: 0.1rem 0 0.75rem;
    color: var(--primary);
    font-size: 1.05rem;
    font-variant-numeric: tabular-nums;
    font-weight: 760;
}

.product-card.is-selected {
    border-color: #91c9d5;
    box-shadow: 0 0 0 2px rgba(18, 106, 130, 0.08);
}

.product-card.is-selected .btn-app-primary {
    background: var(--success);
}

.basket-panel {
    position: sticky;
    top: calc(var(--topbar-height) + 1rem);
    overflow: hidden;
}

.basket-list {
    display: grid;
    max-height: 25rem;
    gap: 0.65rem;
    overflow-y: auto;
    padding: 0.85rem;
}

.basket-item {
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 1fr) auto;
    gap: 0.65rem;
    align-items: center;
    padding: 0.65rem;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.basket-thumb {
    width: 2.5rem;
    height: 2.5rem;
    object-fit: contain;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.basket-item-name {
    overflow: hidden;
    font-size: 0.76rem;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.basket-item-meta {
    color: var(--text-secondary);
    font-size: 0.7rem;
}

.icon-button {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    color: var(--danger);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
}

.icon-button:hover {
    background: var(--danger-soft);
    border-color: #f2cbd1;
}

.basket-summary {
    display: grid;
    gap: 0.55rem;
    padding: 0.9rem;
    background: var(--surface-muted);
    border-top: 1px solid var(--border-color);
}

.summary-line {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.summary-line strong {
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.preview-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(18rem, 0.8fr);
    gap: 1rem;
    align-items: start;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.total-card {
    position: sticky;
    top: calc(var(--topbar-height) + 1rem);
}

.total-lines {
    display: grid;
    gap: 0.7rem;
}

.total-grand {
    margin-top: 0.4rem;
    padding-top: 0.85rem;
    border-top: 1px solid var(--border-strong);
    font-size: 1rem;
    font-weight: 750;
}

.total-grand strong {
    color: var(--primary);
    font-size: 1.25rem;
}

.mobile-offer-list,
.preview-mobile-list {
    display: none;
}

.mobile-offer-card,
.preview-mobile-card {
    padding: 0.9rem;
}

.history-toolbar {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.history-search {
    width: min(100%, 22rem);
}

.state-page {
    display: grid;
    min-height: calc(100vh - 14rem);
    place-items: center;
}

.state-card {
    width: min(100%, 34rem);
    padding: 2rem;
    text-align: center;
}

.state-icon {
    display: grid;
    width: 3.5rem;
    height: 3.5rem;
    margin: 0 auto 1rem;
    place-items: center;
    color: var(--primary);
    background: var(--primary-soft);
    border-radius: 50%;
    font-size: 1.4rem;
}

.state-card h1 {
    margin-bottom: 0.5rem;
    font-size: 1.35rem;
}

.state-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.sidebar-overlay {
    position: fixed;
    z-index: 1035;
    inset: 0;
    background: rgba(15, 23, 42, 0.48);
}

body.sidebar-open {
    overflow: hidden;
}

@media (max-width: 1199.98px) {
    .products-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991.98px) {
    .app-sidebar {
        transform: translateX(-100%);
        transition: transform 180ms ease;
    }

    .app-sidebar.is-open {
        transform: translateX(0);
    }

    .app-workspace {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: grid;
    }

    .offer-workspace,
    .preview-grid,
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .basket-panel,
    .total-card {
        position: static;
    }
}

@media (max-width: 767.98px) {
    .app-topbar,
    .app-main {
        padding-right: 1rem;
        padding-left: 1rem;
    }

    .topbar-user {
        display: none;
    }

    .page-header,
    .history-toolbar {
        align-items: stretch;
        flex-direction: column;
    }

    .page-actions .btn-app {
        flex: 1;
    }

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

    .stats-grid {
        gap: 0.75rem;
    }

    .products-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.75rem;
    }

    .desktop-offer-table,
    .preview-desktop-table {
        display: none;
    }

    .mobile-offer-list,
    .preview-mobile-list {
        display: grid;
        gap: 0.75rem;
    }

    .history-search {
        width: 100%;
    }
}

@media (max-width: 479.98px) {
    .app-topbar {
        min-height: 4rem;
    }

    .brand-badge {
        padding: 0.3rem 0.5rem;
        font-size: 0.67rem;
    }

    .topbar-title span {
        display: none;
    }

    .app-main {
        padding-top: 1.15rem;
    }

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

    .search-form {
        grid-template-columns: 1fr;
    }

    .app-footer {
        gap: 0.25rem;
        flex-direction: column;
    }
}
.brand-selection-form {
    display: grid;
    gap: 1.25rem;
}

.brand-selection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1rem;
}

.brand-selection-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: .35rem .75rem;
    align-items: center;
    min-height: 112px;
    padding: 1rem;
    border: 1px solid var(--app-border, #dfe3ea);
    border-radius: 14px;
    background: #fff;
    cursor: pointer;
}

.brand-selection-card:focus-within {
    outline: 3px solid rgba(26, 35, 126, .22);
    outline-offset: 2px;
}

.brand-selection-card.is-active {
    border-color: #1a237e;
    box-shadow: inset 0 0 0 1px #1a237e;
}

.brand-selection-card.is-disabled {
    color: #697386;
    background: #f5f6f8;
    cursor: not-allowed;
}

.brand-selection-name {
    font-size: 1.1rem;
    font-weight: 700;
}

.brand-selection-status {
    grid-column: 2;
    font-size: .875rem;
}

@media (max-width: 575.98px) {
    .brand-selection-grid {
        grid-template-columns: 1fr;
    }
}