:root {
    --bd-bg: #0f172a;
    --bd-sidebar: #111827;
    --bd-sidebar-hover: #1f2937;
    --bd-accent: #2563eb;
    --bd-accent-2: #7c3aed;
    --bd-text: #e5e7eb;
    --bd-muted: #94a3b8;
    --bd-card: #ffffff;
    --bd-border: #e2e8f0;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Inter, system-ui, -apple-system, sans-serif;
    background: #f8fafc;
    color: #0f172a;
    min-height: 100vh;
}

/* Sidebar */
.bd-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 250px;
    background: linear-gradient(180deg, #0b1220 0%, #111827 100%);
    color: var(--bd-text);
    padding: 1rem 0.75rem;
    overflow-y: auto;
    z-index: 10;
}
.bd-brand {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.5rem 0.75rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 1rem;
}
.bd-brand i { font-size: 1.75rem; color: #60a5fa; }
.brand-title { font-weight: 700; font-size: 1.05rem; }
.brand-sub { font-size: 0.75rem; color: var(--bd-muted); }
.brand-version {
    font-size: 0.68rem;
    color: #64748b;
    letter-spacing: 0.04em;
    margin-top: 2px;
}
.bd-nav { display: flex; flex-direction: column; gap: 2px; }
.bd-nav-group {
    text-transform: uppercase;
    color: var(--bd-muted);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    padding: 0.75rem 0.75rem 0.25rem;
}
.bd-nav-link {
    display: flex; align-items: center; gap: 0.65rem;
    padding: 0.55rem 0.75rem;
    color: var(--bd-text);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.92rem;
    transition: background 0.15s;
}
.bd-nav-link i { font-size: 1.05rem; width: 18px; color: #94a3b8; }
.bd-nav-link:hover { background: var(--bd-sidebar-hover); color: #fff; }
.bd-nav-link.active {
    background: linear-gradient(90deg, rgba(37,99,235,0.25), rgba(124,58,237,0.15));
    color: #fff;
    border-left: 3px solid #60a5fa;
    padding-left: calc(0.75rem - 3px);
}

/* Main */
.bd-main { margin-left: 250px; min-height: 100vh; }
.bd-topbar {
    display: flex; align-items: center; justify-content: space-between;
    background: #fff;
    border-bottom: 1px solid var(--bd-border);
    padding: 0.85rem 1.25rem;
    position: sticky; top: 0; z-index: 5;
}
.bd-page-title { font-size: 1.05rem; font-weight: 600; }
.bd-user {
    display: flex; align-items: center; gap: 0.65rem;
    font-size: 0.9rem;
}
.bd-user .bd-user-name { font-weight: 500; }
.bd-user .btn { background: #0f172a; color: #fff; border-color: #0f172a; }
.bd-user .btn:hover { background: #1f2937; }
.bd-content { padding: 1.25rem; }
.bd-footer {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.65rem 1.25rem;
    border-top: 1px solid var(--bd-border);
    background: #fff;
    color: #64748b;
    font-size: 0.78rem;
}
.bd-footer-version {
    font-family: 'Cascadia Code', 'Consolas', monospace;
    color: #1e293b;
    font-weight: 600;
}

/* Cards */
.bd-card {
    background: #fff;
    border: 1px solid var(--bd-border);
    border-radius: 10px;
    box-shadow: 0 1px 2px rgba(15,23,42,0.04);
    margin-bottom: 1.1rem;
}
.bd-card-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.85rem 1.1rem;
    border-bottom: 1px solid var(--bd-border);
}
.bd-card-header h5 { margin: 0; font-size: 0.98rem; font-weight: 600; display: flex; align-items: center; gap: 0.5rem; }
.bd-card-body { padding: 1.1rem; }

/* KPI grid */
.bd-grid { display: grid; gap: 1rem; }
.bd-kpis { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-bottom: 1.1rem; }
.bd-two-col { grid-template-columns: 1fr 1fr; }
@media (max-width: 992px) { .bd-two-col { grid-template-columns: 1fr; } }

.bd-kpi {
    display: flex; gap: 1rem; align-items: center;
    padding: 1rem;
}
.bd-kpi-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
}
.bd-kpi-label { color: var(--bd-muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; }
.bd-kpi-value { font-size: 1.65rem; font-weight: 700; line-height: 1.1; }
.bd-kpi-trend { font-size: 0.78rem; }

/* Quick links */
.bd-quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.6rem;
}
.bd-quick-link {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 0.4rem;
    padding: 0.95rem;
    background: #f1f5f9;
    border: 1px solid var(--bd-border);
    border-radius: 10px;
    text-decoration: none;
    color: #0f172a;
    transition: transform 0.12s, background 0.12s;
}
.bd-quick-link i { font-size: 1.45rem; color: #2563eb; }
.bd-quick-link:hover { background: #e2e8f0; transform: translateY(-1px); }

/* Tables */
.bd-table th { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: #475569; }
.bd-table td, .bd-table th { vertical-align: middle; }
.bd-truncate {
    max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* Login */
.bd-login-body {
    margin: 0;
    background: radial-gradient(circle at 20% 20%, #1e3a8a 0%, #0b1220 50%, #020617 100%);
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 1rem;
    color: #e5e7eb;
}
.bd-login-card {
    background: rgba(15,23,42,0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 2rem;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 30px 70px rgba(0,0,0,0.35);
}
.bd-login-brand {
    display: flex; align-items: center; gap: 0.75rem;
    margin-bottom: 1.25rem;
}
.bd-login-brand i { font-size: 2rem; color: #60a5fa; }
.bd-login-title { color: #fff; margin: 0.25rem 0; font-size: 1.4rem; }
.bd-login-sub { color: #94a3b8; margin-bottom: 1.5rem; font-size: 0.92rem; }
.bd-login-card .form-label { color: #e5e7eb; }
.bd-login-card .form-control,
.bd-login-card .input-group-text {
    background: rgba(255,255,255,0.04);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.12);
}
.bd-login-card .form-control:focus {
    background: rgba(255,255,255,0.08);
    color: #fff;
    border-color: #60a5fa;
    box-shadow: 0 0 0 0.2rem rgba(96,165,250,0.25);
}
.bd-btn-login {
    background: linear-gradient(90deg, #2563eb, #7c3aed);
    border: none;
    padding: 0.65rem;
    font-weight: 600;
}
.bd-login-footer {
    margin-top: 1.5rem;
    text-align: center;
    color: #64748b;
    font-size: 0.78rem;
}
.bd-login-version {
    position: fixed;
    bottom: 0.8rem; right: 1rem;
    color: rgba(255,255,255,0.45);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    font-family: 'Cascadia Code', 'Consolas', monospace;
}