:root {
    --sidebar-width: 270px;
    --bg: #f5f7fb;
    --surface: #ffffff;
    --border: #e6eaf2;
    --text: #172033;
    --muted: #667085;
    --primary: #0d6efd;
}

* {
    box-sizing: border-box;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

.sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    bottom: 0;
    left: 0;
    padding: 22px;
    position: fixed;
    top: 0;
    width: var(--sidebar-width);
    z-index: 1000;
}

.brand {
    align-items: center;
    display: flex;
    gap: 12px;
    margin-bottom: 28px;
}

.brand img,
.settings-logo {
    border-radius: 12px;
    max-height: 70px;
    max-width: 120px;
    object-fit: contain;
}

.brand-mark,
.auth-mark {
    align-items: center;
    background: linear-gradient(135deg, #0d6efd, #6610f2);
    border-radius: 16px;
    color: #fff;
    display: flex;
    font-size: 26px;
    font-weight: 800;
    height: 52px;
    justify-content: center;
    width: 52px;
}

.brand small {
    color: var(--muted);
    display: block;
}

.sidebar .nav-link {
    border-radius: 12px;
    color: #344054;
    font-weight: 600;
    margin-bottom: 7px;
    padding: 11px 14px;
}

.sidebar .nav-link.active,
.sidebar .nav-link:hover {
    background: #eef4ff;
    color: var(--primary);
}

.content {
    margin-left: var(--sidebar-width);
    padding: 26px;
    width: calc(100% - var(--sidebar-width));
}

.topbar {
    align-items: center;
    display: flex;
    gap: 16px;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-title {
    font-size: 28px;
    font-weight: 800;
    margin: 0;
}

.page-subtitle {
    color: var(--muted);
    margin: 4px 0 0;
}

.user-chip {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: #344054;
    font-weight: 600;
    padding: 9px 14px;
}

.card,
.stat-card,
.summary-box {
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 14px 30px rgba(16, 24, 40, 0.04);
}

.stat-card {
    background: var(--surface);
    padding: 20px;
}

.stat-card span {
    color: var(--muted);
    display: block;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.stat-card strong {
    display: block;
    font-size: 28px;
    margin-top: 8px;
}

.summary-box {
    background: #fbfcff;
    padding: 18px;
}

.summary-line {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.summary-line.grand {
    border-top: 1px solid var(--border);
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 0;
    padding-top: 12px;
}

.auth-body {
    align-items: center;
    background: linear-gradient(135deg, #eef4ff, #f8fafc);
    display: flex;
    min-height: 100vh;
    padding: 20px;
}

.auth-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(16, 24, 40, 0.12);
    margin: 0 auto;
    max-width: 420px;
    padding: 34px;
    width: 100%;
}

.auth-mark {
    margin: 0 auto 12px;
}

.table > :not(caption) > * > * {
    padding: 0.9rem;
}

.invoice-item-row.table-warning input,
.invoice-item-row.table-warning select {
    border-color: #ffc107;
}

@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.2s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .content {
        margin-left: 0;
        padding: 18px;
        width: 100%;
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .user-chip {
        display: none;
    }
}

@media print {
    .sidebar,
    .topbar,
    .no-print,
    .dataTables_length,
    .dataTables_filter,
    .dataTables_info,
    .dataTables_paginate,
    .btn {
        display: none !important;
    }

    .content {
        margin: 0;
        padding: 0;
        width: 100%;
    }

    body {
        background: #fff;
    }

    .card {
        border: 0;
        box-shadow: none;
    }
}