:root {
    --posisa-primary: #2779F1;
    --posisa-cyan: #3BABE9;
    --posisa-navy: #0D3190;
    --posisa-deep: #112C54;
    --posisa-bg: #F8FAFC;
    --posisa-white: #FFFFFF;
    --posisa-text: #1E293B;
    --posisa-muted: #64748B;
    --posisa-border: #E2E8F0;
    --posisa-danger: #DC2626;
    --posisa-success: #16A34A;
    --shadow: 0 12px 35px rgba(15, 23, 42, .08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: var(--posisa-bg);
    color: var(--posisa-text);
}

a {
    text-decoration: none;
    color: inherit;
}

.login-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top, rgba(59, 171, 233, .18), transparent 30%),
        linear-gradient(135deg, #F8FAFC, #FFFFFF);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-wrapper {
    width: 100%;
    max-width: 430px;
    padding: 20px;
}

.login-card {
    background: #FFFFFF;
    border: 1px solid var(--posisa-border);
    border-radius: 24px;
    padding: 34px;
    box-shadow: var(--shadow);
}

.login-logo {
    text-align: center;
    margin-bottom: 18px;
}

.login-logo img {
    width: 130px;
    height: auto;
}

.login-card h1 {
    text-align: center;
    margin: 0;
    color: var(--posisa-deep);
}

.login-subtitle {
    text-align: center;
    color: var(--posisa-muted);
    margin-bottom: 28px;
}

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

.sidebar {
    width: 270px;
    background: #FFFFFF;
    border-right: 1px solid var(--posisa-border);
    padding: 20px;
    position: fixed;
    inset: 0 auto 0 0;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 22px;
    color: var(--posisa-deep);
    padding-bottom: 22px;
    border-bottom: 1px solid var(--posisa-border);
}

.sidebar-brand img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 22px;
}

.sidebar-menu a {
    padding: 12px 14px;
    border-radius: 14px;
    color: var(--posisa-text);
    font-weight: 600;
    transition: .2s ease;
}

.sidebar-menu a:hover {
    background: rgba(39, 121, 241, .10);
    color: var(--posisa-primary);
}

.main-content {
    margin-left: 270px;
    width: calc(100% - 270px);
}

.topbar {
    height: 76px;
    background: #FFFFFF;
    border-bottom: 1px solid var(--posisa-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.topbar strong {
    display: block;
    color: var(--posisa-deep);
    font-size: 18px;
}

.topbar span {
    color: var(--posisa-muted);
    font-size: 13px;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-user small {
    color: var(--posisa-primary);
    font-weight: 700;
}

.content {
    padding: 28px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
}

.page-header h1 {
    margin: 0;
    color: var(--posisa-deep);
    font-size: 30px;
}

.page-header p {
    margin: 5px 0 0;
    color: var(--posisa-muted);
}

.panel {
    background: #FFFFFF;
    border: 1px solid var(--posisa-border);
    border-radius: 22px;
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 22px;
}

.panel h2 {
    margin-top: 0;
    color: var(--posisa-deep);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 22px;
}

.stat-card {
    background: #FFFFFF;
    border: 1px solid var(--posisa-border);
    border-radius: 22px;
    padding: 24px;
    box-shadow: var(--shadow);
}

.stat-card span {
    display: block;
    color: var(--posisa-muted);
    margin-bottom: 12px;
}

.stat-card strong {
    font-size: 28px;
    color: var(--posisa-primary);
}

.stat-card.danger strong {
    color: var(--posisa-danger);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
    margin-bottom: 16px;
}

.form-group label {
    font-weight: 700;
    color: var(--posisa-deep);
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--posisa-border);
    border-radius: 14px;
    padding: 12px 14px;
    outline: none;
    font-size: 15px;
    background: #FFFFFF;
    color: var(--posisa-text);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--posisa-primary);
    box-shadow: 0 0 0 4px rgba(39, 121, 241, .10);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.form-inline {
    display: flex;
    align-items: end;
    gap: 14px;
}

.span-2 {
    grid-column: span 2;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.btn {
    border: none;
    border-radius: 14px;
    padding: 12px 18px;
    font-weight: 800;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: .2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--posisa-primary), var(--posisa-cyan));
    color: #FFFFFF;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 25px rgba(39, 121, 241, .25);
}

.btn-outline {
    background: #FFFFFF;
    color: var(--posisa-primary);
    border: 1px solid rgba(39, 121, 241, .35);
}

.btn-danger {
    background: #FEE2E2;
    color: var(--posisa-danger);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 13px;
}

.alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 18px;
    font-weight: 700;
}

.alert-success {
    background: #DCFCE7;
    color: #166534;
}

.alert-danger {
    background: #FEE2E2;
    color: #991B1B;
}

.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 14px 12px;
    border-bottom: 1px solid var(--posisa-border);
    text-align: left;
    vertical-align: middle;
}

.data-table th {
    color: var(--posisa-deep);
    background: #F8FAFC;
    font-size: 13px;
    text-transform: uppercase;
}

.data-table small {
    color: var(--posisa-muted);
}

.actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.actions form {
    margin: 0;
}

.empty {
    text-align: center;
    color: var(--posisa-muted);
    padding: 24px !important;
}

.pos-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 22px;
}

.product-results {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.product-item {
    border: 1px solid var(--posisa-border);
    border-radius: 16px;
    padding: 14px;
    cursor: pointer;
    transition: .2s ease;
    background: #FFFFFF;
}

.product-item:hover {
    border-color: var(--posisa-primary);
    box-shadow: 0 8px 22px rgba(39, 121, 241, .12);
}

.product-item strong {
    color: var(--posisa-deep);
}

.product-item small {
    display: block;
    color: var(--posisa-muted);
    margin-top: 4px;
}

.pos-total {
    margin: 22px 0;
    background: linear-gradient(135deg, var(--posisa-deep), var(--posisa-primary));
    color: #FFFFFF;
    border-radius: 18px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pos-total span {
    font-weight: 700;
}

.pos-total strong {
    font-size: 30px;
}

.qty-input {
    width: 80px;
}

@media (max-width: 980px) {
    .sidebar {
        position: static;
        width: 100%;
    }

    .app-shell {
        flex-direction: column;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
    }

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

    .span-2 {
        grid-column: span 1;
    }

    .topbar {
        flex-direction: column;
        height: auto;
        gap: 12px;
        padding: 18px;
    }
}

.sidebar-menu a.active {
    background: linear-gradient(135deg, rgba(39, 121, 241, .14), rgba(59, 171, 233, .12));
    color: var(--posisa-primary);
    border: 1px solid rgba(39, 121, 241, .16);
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .02em;
}

.badge-success { background: #DCFCE7; color: #166534; }
.badge-danger { background: #FEE2E2; color: #991B1B; }
.badge-warning { background: #FEF3C7; color: #92400E; }
.badge-info { background: #DBEAFE; color: #1D4ED8; }

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.total-box {
    background: linear-gradient(135deg, var(--posisa-deep), var(--posisa-primary));
    color: #fff;
    border-radius: 18px;
    padding: 20px;
    margin-top: 16px;
}

.total-box span {
    display: block;
    opacity: .85;
    font-weight: 700;
}

.total-box strong {
    display: block;
    font-size: 28px;
    margin-top: 6px;
}

.text-right { text-align: right; }
.text-muted { color: var(--posisa-muted); }
.print-actions { display: flex; gap: 10px; flex-wrap: wrap; }

@media print {
    .sidebar, .topbar, .page-header, .print-actions { display: none !important; }
    .main-content { margin-left: 0 !important; width: 100% !important; }
    .content { padding: 0 !important; }
    .panel { box-shadow: none !important; border: none !important; }
}

@media (max-width: 980px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.purchase-grid {
    display: grid;
    grid-template-columns: 1.1fr 1.6fr;
    gap: 22px;
}

.purchase-summary {
    position: sticky;
    top: 96px;
}

.purchase-total {
    background: linear-gradient(135deg, var(--posisa-deep), var(--posisa-primary));
    color: #FFFFFF;
    border-radius: 20px;
    padding: 22px;
    margin-top: 16px;
}

.purchase-total .line {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,.16);
}

.purchase-total .line:last-child {
    border-bottom: none;
    font-size: 20px;
    font-weight: 900;
}

.product-buy-results {
    margin-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.product-buy-item {
    border: 1px solid var(--posisa-border);
    border-radius: 16px;
    padding: 14px;
    cursor: pointer;
    background: #fff;
    transition: .2s ease;
}

.product-buy-item:hover {
    border-color: var(--posisa-primary);
    box-shadow: 0 8px 20px rgba(39, 121, 241, .12);
}

.product-buy-item strong {
    color: var(--posisa-deep);
}

.product-buy-item small {
    color: var(--posisa-muted);
    display: block;
    margin-top: 4px;
}

.compra-input-mini {
    min-width: 100px;
}

@media (max-width: 980px) {
    .purchase-grid {
        grid-template-columns: 1fr;
    }

    .purchase-summary {
        position: static;
    }
}