:root {
    --app-bg: #f6f7fb;
    --app-card: #ffffff;
    --app-border: #e8eaf0;
}

body {
    background: var(--app-bg);
    color: #202432;
}

.navbar-brand img {
    max-height: 34px;
    max-width: 180px;
    object-fit: contain;
}

.app-card {
    background: var(--app-card);
    border: 1px solid var(--app-border);
    border-radius: 14px;
    box-shadow: 0 6px 24px rgba(31, 38, 64, .05);
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 430px;
}

.login-logo {
    max-height: 58px;
    max-width: 240px;
    object-fit: contain;
}

.table > :not(caption) > * > * {
    vertical-align: middle;
}

.status-badge {
    min-width: 74px;
}

.item-row .form-control,
.item-row .input-group-text {
    min-height: 42px;
}

.invoice-total-box {
    font-size: 1.08rem;
    font-weight: 700;
}

.sticky-actions {
    position: sticky;
    bottom: 0;
    z-index: 20;
    background: rgba(246,247,251,.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--app-border);
    padding: 12px 0;
}

@media (max-width: 767.98px) {
    .desktop-only { display: none !important; }
    .mobile-stack .btn { width: 100%; }
    .item-row { border: 1px solid var(--app-border); border-radius: 12px; padding: 12px; margin-bottom: 12px; }
}