:root {
    --sidebar-width: 260px;
    --sidebar-width-collapsed: 76px;
    --sidebar-bg: #14162a;
    --sidebar-bg-active: #1f2238;
    --sidebar-text: #9195b5;
    --sidebar-text-active: #ffffff;
    --brand-color: #4f6df5;
    --brand-color-dark: color-mix(in srgb, var(--brand-color) 80%, black);
    --brand-color-light: color-mix(in srgb, var(--brand-color) 12%, white);
    --brand-color-softer: color-mix(in srgb, var(--brand-color) 6%, white);
    --content-bg: #f3f5fb;
    --header-height: 68px;
    --radius-sm: 0.5rem;
    --radius: 0.85rem;
    --radius-lg: 1.1rem;
    --shadow-xs: 0 1px 2px rgba(17, 20, 39, 0.05);
    --shadow-soft: 0 0.5rem 1.5rem rgba(17, 20, 39, 0.07);
    --shadow-md: 0 0.75rem 2rem rgba(17, 20, 39, 0.09);
    --shadow-lg: 0 1.25rem 3rem rgba(17, 20, 39, 0.14);
    --border-soft: #eef0f7;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--content-bg);
    color: #333646;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.01em;
}

a {
    text-decoration: none;
}

/* ---------- Scrollbars ---------- */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--brand-color) 30%, #cfd3e6);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--brand-color) 55%, #cfd3e6);
    background-clip: content-box;
}

/* ---------- Layout shell ---------- */
.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: linear-gradient(180deg, var(--sidebar-bg) 0%, #0e0f1c 100%);
    color: var(--sidebar-text);
    transition: width 0.2s ease;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 1030;
    border-right: 1px solid rgba(255, 255, 255, 0.04);
}

.app-shell.sidebar-collapsed .sidebar {
    width: var(--sidebar-width-collapsed);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.4rem 1.25rem;
    color: #fff;
    font-weight: 600;
    font-size: 1.05rem;
    white-space: nowrap;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    margin-bottom: 0.5rem;
}

.sidebar-brand i {
    color: var(--brand-color);
    font-size: 1.4rem;
    filter: drop-shadow(0 0 10px color-mix(in srgb, var(--brand-color) 55%, transparent));
}

.sidebar-nav {
    list-style: none;
    margin: 0;
    padding: 0.5rem 0.65rem;
}

.sidebar-nav li {
    margin-bottom: 0.2rem;
}

.sidebar-nav .nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.68rem 0.9rem;
    border-radius: var(--radius-sm);
    color: var(--sidebar-text);
    font-size: 0.92rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.sidebar-nav .nav-link i {
    width: 1.35rem;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-nav .nav-link:hover {
    background: var(--sidebar-bg-active);
    color: var(--sidebar-text-active);
    transform: translateX(2px);
}

.sidebar-nav .nav-link.active {
    background: linear-gradient(90deg, color-mix(in srgb, var(--brand-color) 22%, transparent), transparent);
    color: var(--sidebar-text-active);
    font-weight: 600;
}

.sidebar-nav .nav-link.active::before {
    content: '';
    position: absolute;
    left: -0.65rem;
    top: 0.35rem;
    bottom: 0.35rem;
    width: 4px;
    border-radius: 0 4px 4px 0;
    background: var(--brand-color);
    box-shadow: 0 0 12px color-mix(in srgb, var(--brand-color) 70%, transparent);
}

.app-shell.sidebar-collapsed .sidebar-brand span,
.app-shell.sidebar-collapsed .sidebar-nav .nav-link span {
    display: none;
}

.content-area {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.topbar {
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(10px);
    -webkit-backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--border-soft);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1020;
}

.topbar .breadcrumb {
    margin: 0;
}

.topbar .breadcrumb-item.active {
    color: #333646;
    font-weight: 600;
}

.page-content {
    padding: 1.75rem;
    flex: 1;
    animation: fadeInUp 0.25s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Cards ---------- */
.card {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    transition: box-shadow 0.2s ease;
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-soft);
    font-weight: 600;
    padding: 1rem 1.25rem;
}

.card-body {
    padding: 1.25rem;
}

/* ---------- Buttons ---------- */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.15s ease, border-color 0.15s ease;
}

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

.btn-brand {
    background: linear-gradient(135deg, var(--brand-color), var(--brand-color-dark));
    border-color: var(--brand-color-dark);
    color: #fff;
    box-shadow: 0 0.35rem 0.9rem color-mix(in srgb, var(--brand-color) 35%, transparent);
}

.btn-brand:hover {
    background: linear-gradient(135deg, var(--brand-color-dark), var(--brand-color-dark));
    border-color: var(--brand-color-dark);
    color: #fff;
    box-shadow: 0 0.5rem 1.2rem color-mix(in srgb, var(--brand-color) 45%, transparent);
    transform: translateY(-1px);
}

.btn-outline-secondary,
.btn-outline-danger {
    transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.btn-outline-secondary:hover,
.btn-outline-danger:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-xs);
}

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

/* ---------- Forms ---------- */
.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border-color: #e2e5f0;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--brand-color);
    box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--brand-color) 18%, transparent);
}

.input-group-text {
    background-color: var(--brand-color-softer);
    border-color: #e2e5f0;
    color: #565a76;
}

.form-label {
    font-weight: 500;
    font-size: 0.88rem;
    color: #4a4e66;
}

/* ---------- Tables ---------- */
.table {
    --bs-table-hover-bg: color-mix(in srgb, var(--brand-color) 5%, white);
}

.table thead th {
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    color: #7d8099;
    font-weight: 600;
    border-bottom-width: 1px;
    border-color: var(--border-soft);
}

.table td {
    vertical-align: middle;
}

/* ---------- Badges ---------- */
.badge {
    font-weight: 600;
    letter-spacing: 0.01em;
    padding: 0.4em 0.7em;
    border-radius: 999px;
}

/* ---------- Modals ---------- */
.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.modal-header {
    border-bottom: 1px solid var(--border-soft);
}

.modal-footer {
    border-top: 1px solid var(--border-soft);
}

/* ---------- Nav tabs ---------- */
.nav-tabs {
    border-bottom: 1px solid var(--border-soft);
}

.nav-tabs .nav-link {
    border: none;
    color: #7d8099;
    font-weight: 500;
    border-radius: 0;
    padding: 0.6rem 0.25rem;
    margin-right: 1.25rem;
    transition: color 0.15s ease;
}

.nav-tabs .nav-link:hover {
    border: none;
    color: var(--brand-color);
}

.nav-tabs .nav-link.active {
    background: transparent;
    color: var(--brand-color);
    border: none;
    border-bottom: 2px solid var(--brand-color);
}

/* ---------- Global loading overlay ---------- */
#global-loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(2px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

#global-loading-overlay .spinner-border {
    width: 3rem;
    height: 3rem;
    color: var(--brand-color);
}

body.is-loading #global-loading-overlay {
    display: flex;
}

/* ---------- Toasts ---------- */
#toast-stack {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 2100;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 360px;
}

#toast-stack .toast {
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    border: none;
}

/* ---------- SweetAlert2 polish ---------- */
.swal2-popup {
    border-radius: var(--radius-lg) !important;
}

.swal2-confirm {
    border-radius: var(--radius-sm) !important;
}

.swal2-cancel {
    border-radius: var(--radius-sm) !important;
}

/* ---------- Icon picker ---------- */
.icon-picker-grid {
    max-height: 160px;
    overflow-y: auto;
    padding: 0.25rem;
}

.icon-picker-choice {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-picker-choice.active {
    background-color: var(--brand-color);
    border-color: var(--brand-color);
    color: #fff;
}

/* ---------- Auth pages ---------- */
body.auth-body {
    position: relative;
    overflow: hidden;
}

body.auth-body::before,
body.auth-body::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.35;
    z-index: 0;
}

body.auth-body::before {
    width: 420px;
    height: 420px;
    background: var(--brand-color);
    top: -140px;
    left: -120px;
}

body.auth-body::after {
    width: 380px;
    height: 380px;
    background: #7c5cff;
    bottom: -140px;
    right: -100px;
}

body.auth-body .auth-card {
    position: relative;
    z-index: 1;
}

body.auth-body .card {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
    .sidebar {
        position: fixed;
        left: 0;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
    }

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

    .content-area {
        width: 100%;
    }
}

/* ================================================================
   POS / Sales screen (admin/sales/create.php)
   ================================================================ */

.pos-scan-input {
    border-radius: 0 999px 999px 0 !important;
    padding-top: 0.7rem;
    padding-bottom: 0.7rem;
    font-size: 1.05rem;
}

.pos-scan-icon {
    border-radius: 999px 0 0 999px !important;
    background: var(--brand-color-softer);
    color: var(--brand-color);
    border-color: #e2e5f0;
}

.pos-shortcut-hint {
    font-size: 0.78rem;
    color: #9195b5;
}

.pos-shortcut-hint kbd {
    background: #2a2d44;
    border-radius: 0.35rem;
    padding: 0.12rem 0.4rem;
    font-size: 0.72rem;
    box-shadow: none;
}

.catalog-tile {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 128px;
    text-align: left;
    padding: 1rem;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow-xs);
    transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.catalog-tile:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: color-mix(in srgb, var(--brand-color) 35%, var(--border-soft));
}

.catalog-tile:active {
    transform: translateY(-1px) scale(0.99);
}

.catalog-tile .tile-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: var(--radius-sm);
    background: var(--brand-color-softer);
    color: var(--brand-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.catalog-tile .tile-price {
    color: var(--brand-color-dark);
}

.pos-cart-card {
    position: sticky;
    top: calc(var(--header-height) + 1rem);
}

.cart-line-remove {
    opacity: 0.55;
    transition: opacity 0.15s ease;
}

.cart-line-remove:hover {
    opacity: 1;
}

.pos-qty-stepper {
    display: inline-flex;
    align-items: center;
    border: 1px solid #e2e5f0;
    border-radius: 999px;
    overflow: hidden;
}

.pos-qty-stepper button {
    border: none;
    background: var(--brand-color-softer);
    color: var(--brand-color-dark);
    width: 26px;
    height: 26px;
    line-height: 1;
    font-weight: 700;
}

.pos-qty-stepper button:hover {
    background: var(--brand-color-light);
}

.pos-qty-stepper input {
    border: none;
    width: 42px;
    text-align: center;
    font-weight: 600;
    padding: 0;
}

.pos-qty-stepper input:focus {
    outline: none;
    box-shadow: none;
}

.pos-total-figure {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--brand-color-dark);
}

.pos-complete-btn {
    background: linear-gradient(135deg, var(--brand-color), var(--brand-color-dark));
    border: none;
    border-radius: var(--radius);
    box-shadow: 0 0.6rem 1.4rem color-mix(in srgb, var(--brand-color) 40%, transparent);
}

.pos-complete-btn:hover {
    box-shadow: 0 0.8rem 1.8rem color-mix(in srgb, var(--brand-color) 50%, transparent);
    transform: translateY(-1px);
}

.pos-complete-btn:disabled {
    opacity: 0.65;
    box-shadow: none;
    transform: none;
}

.sale-complete-icon {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, #22c55e 14%, white);
    color: #16a34a;
    font-size: 2.5rem;
    animation: popIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
    from { transform: scale(0.4); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

#sale-complete-panel .card {
    border-radius: var(--radius-lg);
}

/* ================================================================
   Print utilities (Phase 11 reports; Sales' receipt page has its
   own bespoke #receipt-print-area isolation predating this and is
   left as-is)
   ================================================================ */

@media print {
    .no-print,
    .sidebar,
    .topbar,
    #global-loading-overlay,
    #toast-stack {
        display: none !important;
    }

    .content-area,
    .page-content {
        width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .print-area {
        border: none !important;
        box-shadow: none !important;
    }
}