:root {
    --brand-blue-500: #1292EE;
    --brand-blue-400: #57B0FB;
    --brand-blue-300: #ADD4FF;
    --brand-blue-200: #D6EDFF;
    --brand-blue-100: #F3F8FF;

    --brand-green-500: #56C288;
    --brand-green-100: #F3FFF9;

    --grey-100: #F0F3F6;
    --grey-200: #E7ECF2;
    --grey-300: #D5DDE5;
    --grey-400: #B8C7CC;
    --grey-500: #ADB9C7;
    --grey-600: #8F9CA9;
    --grey-700: #66757F;
    --grey-800: #3E495C;
    --grey-900: #272D37;

    --black: #20242D;
    --white: #FFFFFF;

    --success: #38C976;
    --info: #5EAEFF;
    --warning: #FFA540;
    --danger: #FF4444;

    --sb-bg: #272D37;
    --sb-hover: rgba(255, 255, 255, 0.06);
    --sb-active: rgba(18, 146, 238, 0.2);
    --sb-text: #B8C7CC;
    --sb-muted: #8F9CA9;

    --page-bg: #F0F3F6;
    --ink: #272D37;
    --muted: #66757F;
    --card: #FFFFFF;
    --card-border: #E7ECF2;
    --shadow: 0 8px 24px rgba(32, 36, 45, 0.05);
    --radius: 1rem;
    --radius-sm: .75rem;

    --bs-primary: #1292EE;
    --bs-primary-rgb: 18, 146, 238;
    --bs-success: #38C976;
    --bs-success-rgb: 56, 201, 118;
    --bs-danger: #FF4444;
    --bs-danger-rgb: 255, 68, 68;
    --bs-warning: #FFA540;
    --bs-info: #5EAEFF;
    --bs-body-color: #272D37;
    --bs-border-color: #E7ECF2;
    --bs-secondary-color: #66757F;
}

* { box-sizing: border-box; }

body {
    font-family: "Plus Jakarta Sans", system-ui, sans-serif;
    background: var(--page-bg);
    color: var(--ink);
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, .navbar, .fw-bold { letter-spacing: -0.02em; }

.text-secondary { color: var(--muted) !important; }
.text-danger { color: var(--danger) !important; }
.text-success { color: var(--success) !important; }
.text-primary { color: var(--brand-blue-500) !important; }

.sidebar {
    width: 280px;
    min-width: 280px;
    max-width: 280px;
    flex: 0 0 280px;
    background: var(--sb-bg);
    min-height: 100vh;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: auto;
    box-sizing: border-box;
}

.sidebar .brand-title {
    color: #fff;
    font-weight: 700;
    font-size: 1.15rem;
}

.sidebar .nav-link {
    color: var(--sb-text);
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: .6rem .85rem;
    border-radius: .75rem;
    transition: background .15s ease, color .15s ease;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar .nav-link:hover {
    background: var(--sb-hover);
    color: #fff;
}

.sidebar .nav-link.active {
    background: var(--sb-active);
    color: #fff;
}

.sidebar .nav-link.disabled {
    color: var(--sb-muted);
    background: transparent;
}

.sidebar .section-toggle {
    width: 100%;
    border: 0;
    background: transparent;
    color: var(--sb-muted);
    text-transform: uppercase;
    font-size: .68rem;
    letter-spacing: .05em;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .9rem .85rem .35rem;
}

.sidebar .section-toggle:hover { color: #D5DDE5; }
.sidebar .section-toggle .bi-chevron-down { transition: transform .2s; }
.sidebar .section-toggle[aria-expanded="true"] .bi-chevron-down { transform: rotate(180deg); }
.sidebar .section-items { padding-left: .15rem; }

.main {
    min-width: 0;
    flex: 1 1 auto;
    width: calc(100% - 280px);
}

.navbar {
    background: rgba(255, 255, 255, 0.92) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--grey-200) !important;
}

.card,
.metric,
.modal-content {
    border: 1px solid var(--card-border) !important;
    border-radius: var(--radius) !important;
    background: var(--card);
    box-shadow: var(--shadow);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--grey-200);
    color: var(--ink);
}

.metric .card-body > span,
.metric .card-body span.text-secondary {
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .03em;
    text-transform: uppercase;
    color: var(--grey-600) !important;
}

.section-panel {
    border-radius: 1.15rem;
    padding: 1.25rem;
    background: var(--white);
    border: 1px solid var(--grey-200);
    box-shadow: var(--shadow);
}

.section-panel.ops {
    border-top: 3px solid var(--brand-blue-500);
}

.section-panel.finance {
    border-top: 3px solid var(--brand-green-500);
}

.skeleton {
    background: linear-gradient(90deg, var(--grey-200) 25%, #f7f9fb 50%, var(--grey-200) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.2s infinite;
    border-radius: .85rem;
    min-height: 5.5rem;
    border: 1px solid var(--grey-200);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.stock-row-details { background: #F7F9FB; }

.stock-table-wrap {
    max-height: 420px;
    overflow: auto;
    position: relative;
}

.stock-table thead.sticky-top th {
    background: #fff;
    z-index: 2;
    box-shadow: 0 1px 0 var(--grey-200);
}

.stock-actions-btn {
    width: 34px;
    height: 34px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: .65rem;
    border: 1px solid var(--grey-200);
}

.stock-actions-btn::after { display: none; }

.stock-actions-menu {
    z-index: 2000 !important;
    min-width: 12rem;
}

/* Fila en cero: rojo marcado */
.stock-row--zero > * {
    background-color: rgba(255, 68, 68, 0.22) !important;
}

.stock-row--zero td:first-child {
    box-shadow: inset 4px 0 0 #FF4444;
}

/* Cerca del mínimo (aún por encima): amarillo */
.stock-row--near > * {
    background-color: rgba(255, 165, 64, 0.2) !important;
}

.stock-row--near td:first-child {
    box-shadow: inset 4px 0 0 #FFA540;
}

/* Bajo el mínimo: color gradual vía variables CSS en la fila */
.stock-row--below > * {
    background-color: rgba(255, var(--stock-g, 100), var(--stock-b, 68), var(--stock-a, 0.2)) !important;
}

.stock-row--below td:first-child {
    box-shadow: inset 4px 0 0 rgba(255, 68, 68, calc(0.45 + var(--stock-t, 0.5) * 0.55));
}

.table {
    --bs-table-bg: transparent;
    --bs-table-hover-bg: #F7F9FB;
    color: var(--ink);
}

.table > :not(caption) > * > * { border-bottom-color: var(--grey-200); }

.table-warning {
    --bs-table-bg: #FFF8EE;
    --bs-table-color: var(--ink);
}

.form-control,
.form-select {
    border-radius: .75rem;
    border-color: var(--grey-300);
    background: #fff;
    color: var(--ink);
    padding: .62rem .85rem;
    box-shadow: none;
}

.form-control:focus,
.form-select:focus,
.searchable.is-open .searchable-input {
    border-color: var(--brand-blue-400);
    box-shadow: 0 0 0 .18rem rgba(18, 146, 238, .12);
}

.form-label {
    font-weight: 600;
    color: var(--grey-800);
    font-size: .88rem;
}

.btn {
    border-radius: .75rem;
    font-weight: 600;
    padding: .52rem .95rem;
    border-width: 1px;
    transition: background .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease;
}

.btn-primary {
    --bs-btn-bg: var(--brand-blue-500);
    --bs-btn-border-color: var(--brand-blue-500);
    --bs-btn-hover-bg: #0E7FD0;
    --bs-btn-hover-border-color: #0E7FD0;
    --bs-btn-active-bg: #0C6FB8;
    --bs-btn-active-border-color: #0C6FB8;
    --bs-btn-color: #fff;
    box-shadow: 0 6px 14px rgba(18, 146, 238, .18);
}

.btn-success {
    --bs-btn-bg: var(--success);
    --bs-btn-border-color: var(--success);
    --bs-btn-hover-bg: #2EB56A;
    --bs-btn-hover-border-color: #2EB56A;
    --bs-btn-color: #fff;
}

.btn-danger {
    --bs-btn-bg: var(--danger);
    --bs-btn-border-color: var(--danger);
    --bs-btn-hover-bg: #E53B3B;
    --bs-btn-hover-border-color: #E53B3B;
    --bs-btn-color: #fff;
}

.btn-outline-secondary {
    --bs-btn-color: var(--grey-800);
    --bs-btn-border-color: var(--grey-300);
    --bs-btn-hover-bg: var(--grey-100);
    --bs-btn-hover-border-color: var(--grey-400);
    --bs-btn-hover-color: var(--grey-900);
    background: #fff;
}

.btn-outline-success {
    --bs-btn-color: #1F8A52;
    --bs-btn-border-color: #A8DFC0;
    --bs-btn-hover-bg: var(--brand-green-100);
    --bs-btn-hover-border-color: var(--brand-green-500);
    --bs-btn-hover-color: #146B3E;
    background: #fff;
}

.btn-outline-danger {
    --bs-btn-color: #D63A3A;
    --bs-btn-border-color: #FFC3C3;
    --bs-btn-hover-bg: #FFF5F5;
    --bs-btn-hover-border-color: var(--danger);
    --bs-btn-hover-color: #C62828;
    background: #fff;
}

.btn-outline-primary {
    --bs-btn-color: var(--brand-blue-500);
    --bs-btn-border-color: var(--brand-blue-300);
    --bs-btn-hover-bg: var(--brand-blue-100);
    --bs-btn-hover-border-color: var(--brand-blue-500);
    --bs-btn-hover-color: #0E7FD0;
    background: #fff;
}

.btn-light {
    background: #fff;
    border-color: var(--grey-300);
    color: var(--grey-800);
}

.btn-sm {
    border-radius: .65rem;
    padding: .32rem .65rem;
}

.dropdown-menu {
    border: 1px solid var(--grey-200);
    border-radius: .9rem;
    box-shadow: var(--shadow);
    padding: .4rem;
    background: #fff;
    z-index: 2000;
}

.dropdown-item {
    border-radius: .65rem;
    padding: .5rem .75rem;
    color: var(--ink);
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--brand-blue-100);
    color: var(--brand-blue-500);
}

.badge.text-bg-secondary {
    background: var(--grey-200) !important;
    color: var(--grey-800) !important;
}

.alert {
    border: 0;
    border-radius: .9rem;
}

.alert-success { background: var(--brand-green-100); color: #146B3E; }
.alert-danger { background: #FFF1F1; color: #C62828; }
.alert-info { background: var(--brand-blue-100); color: #0E7FD0; }

.modal-header,
.modal-footer { border-color: var(--grey-200); }

/* Backdrop desenfocado */
.modal-backdrop {
    background-color: rgba(32, 36, 45, 0.45) !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-backdrop.show { opacity: 1 !important; }

.modal.show .modal-dialog {
    transform: none;
}

.modal-content {
    box-shadow: 0 24px 64px rgba(32, 36, 45, 0.18);
}

/* Searchable select */
.searchable {
    position: relative;
}

.searchable-input {
    width: 100%;
}

.searchable-menu {
    position: absolute;
    z-index: 1080;
    left: 0;
    right: 0;
    top: calc(100% + .35rem);
    background: #fff;
    border: 1px solid var(--grey-200);
    border-radius: .85rem;
    box-shadow: var(--shadow);
    max-height: 240px;
    overflow: auto;
    display: none;
}

.searchable.is-open .searchable-menu { display: block; }

.searchable-option,
.searchable-empty,
.searchable-action {
    width: 100%;
    border: 0;
    background: transparent;
    text-align: left;
    padding: .65rem .85rem;
    color: var(--ink);
    display: block;
}

.searchable-option:hover,
.searchable-option.is-active {
    background: var(--brand-blue-100);
    color: var(--brand-blue-500);
}

.searchable-empty {
    color: var(--muted);
    font-size: .9rem;
}

.searchable-action {
    border-top: 1px solid var(--grey-200);
    color: var(--brand-blue-500);
    font-weight: 600;
}

.searchable-action:hover {
    background: var(--brand-blue-100);
}

.inline-create-panel {
    border: 1px dashed var(--grey-300);
    border-radius: .9rem;
    background: #F7F9FB;
    padding: 1rem;
    margin-top: .75rem;
}

/* Product catalog navigation */
.product-catalog-nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.product-catalog-tabs {
    display: inline-flex;
    gap: .35rem;
    padding: .3rem;
    background: #fff;
    border: 1px solid var(--card-border);
    border-radius: 999px;
    box-shadow: var(--shadow);
    min-width: max-content;
}
.product-catalog-tab {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .55rem 1.15rem .55rem 1rem;
    border-radius: 999px;
    color: var(--muted);
    text-decoration: none;
    font-size: .92rem;
    font-weight: 600;
    white-space: nowrap;
    transition: background .15s, color .15s;
}
.product-catalog-tab:hover {
    background: var(--brand-blue-100);
    color: var(--brand-blue-500);
}
.product-catalog-tab.is-active {
    background: var(--brand-blue-500);
    color: #fff;
}
.product-catalog-tab.is-active i { color: #fff; }
.product-catalog-tab .help-tip--corner {
    position: absolute;
    top: .1rem;
    right: .2rem;
    font-size: .72rem;
    line-height: 1;
    opacity: .85;
}
.product-catalog-tab:hover .help-tip--corner,
.product-catalog-tab.is-active .help-tip--corner {
    opacity: 1;
}
.product-catalog-tab.is-active .help-tip--corner {
    color: rgba(255,255,255,.95);
}
.help-tip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-blue-500);
    cursor: help;
    vertical-align: middle;
    line-height: 1;
}
.help-tip:focus {
    outline: 2px solid rgba(13, 110, 253, .35);
    outline-offset: 2px;
    border-radius: 999px;
}
.help-tip i { font-size: inherit; }
.tooltip .tooltip-inner {
    max-width: 280px;
    text-align: left;
    padding: .55rem .7rem;
    font-size: .82rem;
    font-weight: 500;
}
.product-empty {
    padding: 3rem 1.5rem;
    text-align: center;
}
.product-empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto .85rem;
    border-radius: 1rem;
    background: var(--brand-blue-100);
    color: var(--brand-blue-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
}
.product-thumb {
    width: 40px;
    height: 40px;
    border-radius: .65rem;
    object-fit: cover;
    background: var(--grey-100);
    border: 1px solid var(--grey-200);
}
.product-thumb-placeholder {
    width: 40px;
    height: 40px;
    border-radius: .65rem;
    background: var(--grey-100);
    border: 1px solid var(--grey-200);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--grey-500);
}

@media (max-width: 991px) {
    .sidebar { display: none; }
    .sidebar.show {
        display: block;
        position: fixed;
        z-index: 1040;
        width: 280px;
        min-width: 280px;
        max-width: 280px;
        flex: 0 0 280px;
        box-shadow: 16px 0 40px rgba(32, 36, 45, .28);
    }
    .main { width: 100%; flex: 1 1 100%; }
}

@media print {
    .sidebar, .navbar, .no-print { display: none !important; }
    .main { width: 100%; }
    body { background: #fff; }
}