/*
 * VyaparBalance design system.
 * Loaded after the vendor "CodiePie" theme (style.min.css / components.min.css)
 * so these rules win the cascade without deleting/forking the vendor files.
 * Everything here is presentational only — no markup/behavior contracts assumed
 * beyond class names and data-attributes that already exist in the views/JS.
 */

/* ---------------------------------------------------------------------- */
/* Design tokens                                                          */
/* ---------------------------------------------------------------------- */

:root {
    --vb-primary: #2563EB;
    --vb-primary-dark: #1D4ED8;
    --vb-primary-light: #DBEAFE;
    --vb-success: #16A34A;
    --vb-success-light: #DCFCE7;
    --vb-danger: #DC2626;
    --vb-danger-light: #FEE2E2;
    --vb-warning: #F59E0B;
    --vb-warning-light: #FEF3C7;
    --vb-info: #0EA5E9;
    --vb-info-light: #E0F2FE;

    --vb-sidebar-bg: #0F172A;
    --vb-sidebar-hover: #1E293B;
    --vb-sidebar-active: #2563EB;
    --vb-sidebar-text: #FFFFFF;
    --vb-sidebar-text-muted: rgba(255, 255, 255, 0.65);
    --vb-sidebar-width: 268px;
    --vb-sidebar-width-collapsed: 84px;

    --vb-bg: #F8FAFC;
    --vb-surface: #FFFFFF;
    --vb-surface-alt: #F1F5F9;
    --vb-border: #E2E8F0;
    --vb-text: #0F172A;
    --vb-text-muted: #64748B;
    --vb-text-soft: #94A3B8;

    --vb-radius-sm: 6px;
    --vb-radius: 10px;
    --vb-radius-lg: 16px;
    --vb-radius-pill: 999px;

    --vb-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --vb-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    --vb-shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);

    --vb-font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --vb-transition: 180ms ease;
}

:root[data-theme="dark"] {
    --vb-bg: #0B1220;
    --vb-surface: #111827;
    --vb-surface-alt: #1A2333;
    --vb-border: #26324a;
    --vb-text: #E5E9F0;
    --vb-text-muted: #94A3B8;
    --vb-text-soft: #64748B;

    --vb-primary-light: #1E3A76;
    --vb-success-light: #123c26;
    --vb-danger-light: #4a1616;
    --vb-warning-light: #4a3510;
    --vb-info-light: #10344a;
}

/* ---------------------------------------------------------------------- */
/* Base                                                                    */
/* ---------------------------------------------------------------------- */

html[data-theme] body {
    font-family: var(--vb-font);
    background: var(--vb-bg);
    color: var(--vb-text);
    transition: background var(--vb-transition), color var(--vb-transition);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--vb-text);
}

.text-muted {
    color: var(--vb-text-muted) !important;
}

a {
    color: var(--vb-primary);
}

/* ---------------------------------------------------------------------- */
/* Cards                                                                   */
/* ---------------------------------------------------------------------- */

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

.card.shadow-sm, .card.shadow-lg {
    box-shadow: var(--vb-shadow) !important;
}

.card-body {
    padding: 1.5rem;
}

.card-hover:hover {
    box-shadow: var(--vb-shadow-lg);
    transform: translateY(-2px);
}

/* ---------------------------------------------------------------------- */
/* Dashboard KPI grid                                                      */
/* ---------------------------------------------------------------------- */

/* One grid per widget group (replaces Bootstrap .row.g-4/.col-md-*.col-lg-*
   for these specific sections) — CSS Grid gives every card equal width AND
   equal height for free (grid's default align-items:stretch), which the old
   row/col + manually-matched breakpoints could drift out of sync on. Fluid
   auto-fit naturally gives ~1 card on mobile, ~2 on tablet, ~4 on desktop;
   the two explicit breakpoints below just pin the upper end so a very wide
   monitor doesn't stretch to 6+ across or past the requested 5-per-row cap. */
.vb-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

@media (min-width: 1200px) {
    .vb-kpi-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1600px) {
    .vb-kpi-grid { grid-template-columns: repeat(5, 1fr); }
}

/* A grid row sized to its tallest card is exactly what we want, but a group
   with e.g. 3 cards inside a 4-or-5-column grid would otherwise stretch
   those 3 cards edge-to-edge instead of matching the width of every other
   group's cards — cap items at a sensible max so short groups still line up
   visually with full ones instead of ballooning wider. */
.vb-kpi-grid > * {
    max-width: 420px;
}

@media (max-width: 575.98px) {
    .vb-kpi-grid > * {
        max-width: none;
    }
}

/* KPI stat card */
.vb-kpi-card {
    --vb-kpi-bg: #FFFFFF;
    --vb-kpi-border: #E5E7EB;
    --vb-kpi-title-color: #64748B;
    --vb-kpi-value-color: #111827;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px;
    border-radius: 16px;
    border: 1px solid var(--vb-kpi-border);
    background: var(--vb-kpi-bg);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 10px rgba(15, 23, 42, 0.04);
    height: 100%;
    min-width: 0;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.vb-kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.1);
}

:root[data-theme="dark"] .vb-kpi-card {
    --vb-kpi-bg: var(--vb-surface);
    --vb-kpi-border: var(--vb-border);
    --vb-kpi-title-color: var(--vb-text-muted);
    --vb-kpi-value-color: var(--vb-text);
}

/* The text block next to the icon is a flex child; without min-width:0 a
   long value (e.g. a big currency amount) can't shrink/wrap within its own
   column — it overflows past the card's edge and overlaps whatever sits
   next to it instead of staying inside its own card. */
.vb-kpi-card-body {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1 1 auto;
}

.vb-kpi-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.vb-kpi-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--vb-kpi-title-color);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 6px;
    /* Titles used to wrap to 1 or 2 lines depending on word count, which
       misaligned the value baseline between neighboring cards — force every
       title onto one line so all cards in a row start their value at the
       same height. */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.vb-kpi-value {
    /* Scales down fluidly as the card narrows (covers most amounts down to
       one line) and, as a last-resort safety net for very large numbers
       (up to ₹99,99,99,999.99), wraps onto a second line instead of ever
       overflowing or overlapping neighboring content. */
    font-size: clamp(1.25rem, 1vw + 1rem, 1rem);
    font-weight: 700;
    color: var(--vb-kpi-value-color);
    line-height: 1.2;
    overflow-wrap: break-word;
    word-break: break-word;
}

.vb-kpi-badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    margin-top: 6px;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.vb-kpi-badge-success { background: var(--vb-success-light); color: var(--vb-success); }
.vb-kpi-badge-danger  { background: var(--vb-danger-light);  color: var(--vb-danger); }

.vb-kpi-icon.vb-tone-primary { background: var(--vb-primary-light); color: var(--vb-primary); }
.vb-kpi-icon.vb-tone-success { background: var(--vb-success-light); color: var(--vb-success); }
.vb-kpi-icon.vb-tone-danger  { background: var(--vb-danger-light);  color: var(--vb-danger); }
.vb-kpi-icon.vb-tone-warning { background: var(--vb-warning-light); color: var(--vb-warning); }
.vb-kpi-icon.vb-tone-info    { background: var(--vb-info-light);    color: var(--vb-info); }

/* ---------------------------------------------------------------------- */
/* Buttons                                                                 */
/* ---------------------------------------------------------------------- */

.btn {
    border-radius: var(--vb-radius-sm);
    font-weight: 600;
    padding: 0.5rem 1.1rem;
    transition: filter var(--vb-transition), box-shadow var(--vb-transition), transform var(--vb-transition);
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: var(--vb-primary) !important;
    border-color: var(--vb-primary) !important;
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background: var(--vb-primary-dark) !important;
    border-color: var(--vb-primary-dark) !important;
}

.btn-success { background: var(--vb-success) !important; border-color: var(--vb-success) !important; }
.btn-success:hover, .btn-success:focus, .btn-success:active { background: #15803d !important; border-color: #15803d !important; }
.btn-danger  { background: var(--vb-danger) !important;  border-color: var(--vb-danger) !important; }
.btn-danger:hover, .btn-danger:focus, .btn-danger:active { background: #b91c1c !important; border-color: #b91c1c !important; }
.btn-warning { background: var(--vb-warning) !important; border-color: var(--vb-warning) !important; color: #fff !important; }
.btn-warning:hover, .btn-warning:focus, .btn-warning:active { background: #b45309 !important; border-color: #b45309 !important; color: #fff !important; }
.btn-info    { background: var(--vb-info) !important;    border-color: var(--vb-info) !important; color: #fff !important; }
.btn-info:hover, .btn-info:focus, .btn-info:active { background: #0369a1 !important; border-color: #0369a1 !important; color: #fff !important; }

.btn-outline-primary { color: var(--vb-primary); border-color: var(--vb-primary); }
.btn-outline-primary:hover, .btn-outline-primary:focus, .btn-outline-primary:active { background: var(--vb-primary) !important; border-color: var(--vb-primary) !important; color: #fff !important; }

.btn-outline-success { color: var(--vb-success); border-color: var(--vb-success); }
.btn-outline-success:hover, .btn-outline-success:focus, .btn-outline-success:active { background: var(--vb-success) !important; border-color: var(--vb-success) !important; color: #fff !important; }
.btn-outline-danger { color: var(--vb-danger); border-color: var(--vb-danger); }
.btn-outline-danger:hover, .btn-outline-danger:focus, .btn-outline-danger:active { background: var(--vb-danger) !important; border-color: var(--vb-danger) !important; color: #fff !important; }
.btn-outline-warning { color: var(--vb-warning); border-color: var(--vb-warning); }
.btn-outline-warning:hover, .btn-outline-warning:focus, .btn-outline-warning:active { background: var(--vb-warning) !important; border-color: var(--vb-warning) !important; color: #fff !important; }
.btn-outline-info { color: var(--vb-info); border-color: var(--vb-info); }
.btn-outline-info:hover, .btn-outline-info:focus, .btn-outline-info:active { background: var(--vb-info) !important; border-color: var(--vb-info) !important; color: #fff !important; }

/* Reclaim .btn-secondary / .btn-outline-secondary from the vendor theme,
   which paints them solid orange (#ffa705) with !important — used sitewide
   as the "Cancel" / neutral-action button. */
.btn-secondary,
.btn-secondary.disabled {
    background: var(--vb-surface-alt) !important;
    border-color: var(--vb-border) !important;
    color: var(--vb-text) !important;
    box-shadow: none !important;
}

.btn-secondary:hover,
.btn-secondary:focus,
.btn-secondary:active {
    background: var(--vb-border) !important;
    border-color: var(--vb-border) !important;
    color: var(--vb-text) !important;
}

.btn-outline-secondary {
    background: transparent !important;
    border-color: var(--vb-border) !important;
    color: var(--vb-text-muted) !important;
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus,
.btn-outline-secondary:active {
    background: var(--vb-surface-alt) !important;
    border-color: var(--vb-border) !important;
    color: var(--vb-text) !important;
}

.btn-sm { border-radius: var(--vb-radius-sm); }

/* Loading-spinner state, toggled by app.js on form submit (additive: only applies
   when the .btn-loading class is present, never assumed by any existing markup). */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 1rem;
    height: 1rem;
    top: 50%;
    left: 50%;
    margin: -0.5rem 0 0 -0.5rem;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-top-color: #fff;
    animation: vb-spin 0.6s linear infinite;
}

.btn-outline-primary.btn-loading::after,
.btn-outline-secondary.btn-loading::after {
    border-color: rgba(37, 99, 235, 0.35);
    border-top-color: var(--vb-primary);
}

@keyframes vb-spin {
    to { transform: rotate(360deg); }
}

/* ---------------------------------------------------------------------- */
/* Badges / status pills                                                   */
/* ---------------------------------------------------------------------- */

.badge {
    font-weight: 600;
    border-radius: var(--vb-radius-pill);
    padding: 0.4em 0.85em;
}

/* Reclaim Bootstrap's bg-* utilities from the vendor "CodiePie" theme, which
   hardcodes them to its own !important palette (#563d7c, #ffa705, etc.) —
   these are used throughout the app for status badges (Invoice/Challan
   status, Active/Inactive, etc.), so they need to match our tokens. */
.bg-primary   { background-color: var(--vb-primary) !important; }
.bg-success   { background-color: var(--vb-success) !important; }
.bg-danger    { background-color: var(--vb-danger) !important; }
.bg-warning   { background-color: var(--vb-warning) !important; color: #fff !important; }
.bg-info      { background-color: var(--vb-info) !important; }
.bg-secondary { background-color: var(--vb-text-soft) !important; }

.vb-status {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 0.3rem 0.75rem;
    border-radius: var(--vb-radius-pill);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.vb-status::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.vb-status-success { background: var(--vb-success-light); color: var(--vb-success); }
.vb-status-danger   { background: var(--vb-danger-light);  color: var(--vb-danger); }
.vb-status-warning  { background: var(--vb-warning-light); color: var(--vb-warning); }
.vb-status-info     { background: var(--vb-info-light);    color: var(--vb-info); }
.vb-status-muted    { background: var(--vb-surface-alt);   color: var(--vb-text-muted); }

/* ---------------------------------------------------------------------- */
/* Forms                                                                    */
/* ---------------------------------------------------------------------- */

.form-control, .form-select {
    border-radius: var(--vb-radius-sm);
    border-color: var(--vb-border);
    background-color: var(--vb-surface);
    color: var(--vb-text);
    padding: 0.55rem 0.85rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--vb-primary);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.15);
}

.form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--vb-text-muted);
    margin-bottom: 0.35rem;
}

/* Section divider heading used on Settings-style pages to group related fields. */
.vb-form-section {
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--vb-primary);
    border-bottom: 1px solid var(--vb-border);
    padding-bottom: 0.5rem;
    margin: 1.75rem 0 1rem;
}

.vb-form-section:first-of-type {
    margin-top: 0;
}

.input-group-text {
    background: var(--vb-surface-alt);
    border-color: var(--vb-border);
    color: var(--vb-text-muted);
}

/* Floating label, opt-in via Bootstrap's own .form-floating wrapper —
   only takes effect on markup that already uses it. */
.form-floating > .form-control,
.form-floating > .form-select {
    border-radius: var(--vb-radius-sm);
}

.form-check-input:checked {
    background-color: var(--vb-primary);
    border-color: var(--vb-primary);
}

.is-invalid, .form-control.is-invalid {
    border-color: var(--vb-danger);
}

/* ---------------------------------------------------------------------- */
/* Tables                                                                   */
/* ---------------------------------------------------------------------- */

.table-responsive {
    border-radius: var(--vb-radius-lg);
}

.dataTables_wrapper {
    max-width: 100%;
    overflow-x: auto;
}

/* Bootstrap 5's table cells paint themselves via --bs-table-bg, which
   defaults to --bs-body-bg (white) — a variable we never touch since we run
   our own [data-theme] token system instead of Bootstrap's native dark mode.
   Left alone, every plain (non-DataTable) <table> stays white in dark mode
   regardless of the card/page around it. Force it transparent so table cells
   always show through to their container. */
.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--vb-text);
}

table.dataTable {
    color: var(--vb-text);
}

table.dataTable thead th {
    position: sticky;
    top: 0;
    z-index: 1;
    background: var(--vb-surface-alt);
    color: var(--vb-text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 700;
    border-bottom: 2px solid var(--vb-border) !important;
    white-space: nowrap;
}

table.dataTable tbody tr {
    transition: background var(--vb-transition);
}

table.dataTable tbody tr:hover {
    background: var(--vb-surface-alt);
}

table.dataTable tbody td {
    border-color: var(--vb-border) !important;
    vertical-align: middle;
}

.dataTables_wrapper .dataTables_filter input {
    border-radius: var(--vb-radius-pill);
    border: 1px solid var(--vb-border);
    padding: 0.4rem 1rem;
    margin-left: 0.5rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    border-radius: var(--vb-radius-sm) !important;
    margin: 0 2px;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--vb-primary) !important;
    border-color: var(--vb-primary) !important;
    color: #fff !important;
}

/* This build's DataTables CSS renders pagination as a Bootstrap
   ul.pagination (also used by any other page-level pagination), so the
   "current page" indicator is actually .page-item.active .page-link —
   override the vendor theme's #563d7c there too. */
.page-link {
    color: var(--vb-primary);
    border-radius: var(--vb-radius-sm) !important;
    margin: 0 3px;
    border-color: var(--vb-border);
}

.page-item.active .page-link {
    background-color: var(--vb-primary) !important;
    border-color: var(--vb-primary) !important;
    color: #fff !important;
}

.page-item.disabled .page-link {
    color: var(--vb-text-soft);
    background-color: var(--vb-surface-alt);
}

/* Custom DataTables "dom" toolbar layout (buttons + search) — plain flexbox,
   deliberately not Bootstrap's .row/.col-* grid, since nested grid rows
   without a .container wrapper overflow narrow (mobile) viewports via their
   negative margins. */
.vb-dt-toolbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.vb-dt-toolbar-buttons,
.vb-dt-toolbar-filter {
    max-width: 100%;
}

.dt-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Override the vendor "CodiePie" theme's !important-laden .btn-secondary /
   .btn-outline-secondary rules, which otherwise paint DataTables' Buttons
   extension solid orange regardless of the className passed at init. */
.dt-buttons .btn,
.dt-buttons .btn-secondary,
.dt-buttons .btn-outline-secondary {
    background: var(--vb-surface) !important;
    border: 1px solid var(--vb-border) !important;
    color: var(--vb-text-muted) !important;
    box-shadow: none !important;
    border-radius: var(--vb-radius-sm) !important;
    margin-right: 0 !important;
}

.dt-buttons .btn:hover,
.dt-buttons .btn-secondary:hover,
.dt-buttons .btn-outline-secondary:hover {
    background: var(--vb-primary-light) !important;
    color: var(--vb-primary) !important;
    border-color: var(--vb-primary) !important;
}

/* ---------------------------------------------------------------------- */
/* Skeleton loading shimmer (opt-in via .vb-skeleton)                      */
/* ---------------------------------------------------------------------- */

.vb-skeleton {
    background: linear-gradient(90deg, var(--vb-surface-alt) 25%, var(--vb-border) 37%, var(--vb-surface-alt) 63%);
    background-size: 400% 100%;
    animation: vb-skeleton-shimmer 1.4s ease infinite;
    border-radius: var(--vb-radius-sm);
}

@keyframes vb-skeleton-shimmer {
    0% { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
}

/* ---------------------------------------------------------------------- */
/* Dropdown / Modal / Accordion / Toast / Tabs / Progress / Breadcrumb      */
/* ---------------------------------------------------------------------- */

.dropdown-menu {
    border: 1px solid var(--vb-border);
    border-radius: var(--vb-radius);
    box-shadow: var(--vb-shadow-lg);
    background: var(--vb-surface);
    padding: 0.5rem;
    animation: vb-fade-in 120ms ease;
}

.dropdown-item {
    border-radius: var(--vb-radius-sm);
    padding: 0.5rem 0.75rem;
    color: var(--vb-text);
}

.dropdown-item:hover, .dropdown-item:focus {
    background: var(--vb-surface-alt);
    color: var(--vb-text);
}

@keyframes vb-fade-in {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-content {
    border: none;
    border-radius: var(--vb-radius-lg);
    background: var(--vb-surface);
    color: var(--vb-text);
    box-shadow: var(--vb-shadow-lg);
}

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

.accordion-button {
    border-radius: var(--vb-radius-sm) !important;
    font-weight: 600;
    background: var(--vb-surface);
    color: var(--vb-text);
}

.accordion-button:not(.collapsed) {
    background: var(--vb-primary-light);
    color: var(--vb-primary-dark);
}

.accordion-item {
    border-color: var(--vb-border);
    background: var(--vb-surface);
}

.nav-tabs .nav-link {
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--vb-text-muted);
    font-weight: 600;
}

.nav-tabs .nav-link.active {
    color: var(--vb-primary);
    border-bottom-color: var(--vb-primary);
    background: transparent;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--vb-text-soft);
}

.progress {
    border-radius: var(--vb-radius-pill);
    background: var(--vb-surface-alt);
}

.progress-bar {
    background: var(--vb-primary);
}

/* Timeline (opt-in, .vb-timeline) */
.vb-timeline {
    position: relative;
    padding-left: 1.75rem;
    border-left: 2px solid var(--vb-border);
}

.vb-timeline-item {
    position: relative;
    padding-bottom: 1.25rem;
}

.vb-timeline-item::before {
    content: "";
    position: absolute;
    left: -2.05rem;
    top: 0.2rem;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--vb-primary);
    border: 2px solid var(--vb-surface);
}

/* ---------------------------------------------------------------------- */
/* Dark-mode-aware overrides for the pre-existing inline shell styles      */
/* (kept minimal here; the shell itself is fully restyled in Phase 2)      */
/* ---------------------------------------------------------------------- */

:root[data-theme="dark"] .bg-white {
    background-color: var(--vb-surface) !important;
    color: var(--vb-text);
}

:root[data-theme="dark"] .table {
    color: var(--vb-text);
}

:root[data-theme="dark"] .border-top,
:root[data-theme="dark"] .border-bottom {
    border-color: var(--vb-border) !important;
}

/* ---------------------------------------------------------------------- */
/* Shell: sidebar, navbar, footer                                          */
/* ---------------------------------------------------------------------- */

body {
    margin: 0;
    background: var(--vb-bg);
    overflow-x: hidden;
}

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

.content-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-left: var(--vb-sidebar-width);
    transition: margin-left var(--vb-transition);
}

body.sidebar-collapsed .content-wrapper {
    margin-left: var(--vb-sidebar-width-collapsed);
}

main {
    flex: 1;
}

@media (max-width: 991.98px) {
    .content-wrapper {
        margin-left: 0;
    }
}

/* Sidebar */
.vb-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1040;
    width: var(--vb-sidebar-width);
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--vb-sidebar-bg);
    color: var(--vb-sidebar-text);
    overflow-y: auto;
    overflow-x: hidden;
    transition: width var(--vb-transition);
    scrollbar-width: thin;
}

body.sidebar-collapsed .vb-sidebar {
    width: var(--vb-sidebar-width-collapsed);
}

body.sidebar-collapsed .vb-sidebar .vb-sidebar-label,
body.sidebar-collapsed .vb-sidebar .vb-sidebar-brand-text,
body.sidebar-collapsed .vb-sidebar .vb-sidebar-user-text,
body.sidebar-collapsed .vb-sidebar .fa-chevron-down {
    display: none !important;
}

body.sidebar-collapsed .vb-sidebar-toggle-btn i {
    transform: rotate(180deg);
}

body.sidebar-collapsed .vb-sidebar-brand-row,
body.sidebar-collapsed .vb-sidebar-user {
    justify-content: center;
}

@media (max-width: 991.98px) {
    .vb-sidebar {
        transform: translateX(-100%);
        transition: transform var(--vb-transition);
        width: var(--vb-sidebar-width);
    }

    .vb-sidebar.show {
        transform: translateX(0);
    }
}

.vb-sidebar-brand {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.vb-sidebar-brand-row {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
}

.vb-sidebar-logo {
    width: 38px;
    height: 38px;
    border-radius: var(--vb-radius-sm);
    background: var(--vb-sidebar-active);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    flex-shrink: 0;
    overflow: hidden;
}

.vb-sidebar-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.vb-sidebar-brand-text {
    min-width: 0;
}

.vb-sidebar-company-name {
    font-weight: 700;
    font-size: 0.92rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 150px;
}

.vb-sidebar-subtitle {
    color: var(--vb-sidebar-text-muted);
    font-size: 0.72rem;
}

.vb-sidebar-toggle-btn {
    background: transparent;
    border: none;
    color: var(--vb-sidebar-text-muted);
    padding: 0.3rem 0.5rem;
    border-radius: var(--vb-radius-sm);
    transition: background var(--vb-transition), transform var(--vb-transition);
}

.vb-sidebar-toggle-btn:hover {
    background: var(--vb-sidebar-hover);
    color: #fff;
}

.vb-sidebar-toggle-btn i {
    transition: transform var(--vb-transition);
}

.vb-sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.9rem 1.1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.vb-sidebar-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.vb-sidebar-user-name {
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.vb-sidebar-user-role {
    font-size: 0.72rem;
    color: var(--vb-sidebar-text-muted);
}

.vb-sidebar-nav {
    padding: 0.75rem;
    flex: 1;
}

.vb-sidebar-nav .nav-link,
.vb-sidebar-footer .nav-link {
    color: var(--vb-sidebar-text-muted);
    border-radius: var(--vb-radius-sm);
    padding: 0.55rem 0.75rem;
    margin-bottom: 0.15rem;
    font-size: 0.88rem;
    font-weight: 500;
    transition: background var(--vb-transition), color var(--vb-transition), transform var(--vb-transition);
}

.vb-sidebar-nav .nav-link i {
    width: 20px;
    text-align: center;
    margin-right: 0.6rem;
}

.vb-sidebar-nav .nav-link:hover {
    background: var(--vb-sidebar-hover);
    color: #fff;
    transform: translateX(2px);
}

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

.vb-sidebar-nav .nav-link[data-bs-toggle="collapse"] .fa-chevron-down {
    transition: transform var(--vb-transition);
}

.vb-sidebar-nav .nav-link[data-bs-toggle="collapse"][aria-expanded="true"] .fa-chevron-down {
    transform: rotate(180deg);
}

.vb-sidebar-submenu {
    padding-left: 1.85rem;
    padding-top: 0.15rem;
}

.vb-sidebar-submenu .nav-link {
    font-size: 0.82rem;
    padding: 0.45rem 0.75rem;
}

.vb-submenu-dot {
    font-size: 5px;
    vertical-align: middle;
    margin-right: 0.5rem;
    width: auto !important;
}

.vb-sidebar-footer {
    padding: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

/* Navbar */
.vb-navbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: var(--vb-surface);
    border-bottom: 1px solid var(--vb-border);
    box-shadow: var(--vb-shadow-sm);
    min-height: 68px;
    color: var(--vb-text);
    flex-wrap: wrap;
    row-gap: 0.5rem;
}

/* Below ~480px, the right-side icon cluster (theme switch, bell, avatar)
   plus the left-side hamburger + academic-year selector can outgrow very
   narrow phone widths — tighten spacing so it still fits on one row. */
@media (max-width: 480px) {
    .vb-navbar {
        padding-left: 0.75rem !important;
        padding-right: 0.75rem !important;
    }
    .vb-navbar .me-3 {
        margin-right: 0.4rem !important;
    }
    .vb-theme-switch .form-check-label {
        display: none !important;
    }
}

.vb-navbar-search {
    align-items: center;
    gap: 0.5rem;
    background: var(--vb-surface-alt);
    border: 1px solid var(--vb-border);
    border-radius: var(--vb-radius-pill);
    padding: 0.45rem 1rem;
    color: var(--vb-text-muted);
    min-width: 260px;
}

.vb-navbar-search input {
    border: none;
    background: transparent;
    outline: none;
    color: var(--vb-text);
    width: 100%;
    font-size: 0.85rem;
}

.vb-navbar-icon-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--vb-surface-alt);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--vb-text-muted);
    cursor: pointer;
    transition: background var(--vb-transition);
}

.vb-navbar-icon-btn:hover {
    background: var(--vb-primary-light);
    color: var(--vb-primary);
}

.vb-navbar-user {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--vb-text);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
}

.vb-navbar-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--vb-primary-light);
    color: var(--vb-primary-dark);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

.vb-theme-switch .form-check-input {
    width: 2.4rem;
    height: 1.3rem;
    cursor: pointer;
}

.vb-theme-switch .form-check-label {
    color: var(--vb-text-muted);
    margin-left: 0.35rem;
}

.vb-footer {
    background: var(--vb-surface);
    border-top: 1px solid var(--vb-border);
    color: var(--vb-text-muted);
}