:root {
    --sidebar-width: 90px;
    --control-rack-width: 240px;
    --bo-bg: #f8fafc;
    --bo-sidebar: #002147;
    --bo-accent: #00A0FF;
    --bo-border: #e2e8f0;
    --bo-text: #1e293b;
}

.backoffice-container {
    display: flex;
    min-height: 100vh;
    background: var(--bo-bg);
    color: var(--bo-text);
}

/* Primary Navigation Rail (Far Left) */
.bo-sidebar {
    width: var(--sidebar-width);
    background: var(--bo-sidebar);
    color: white;
    position: fixed;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0;
    z-index: 1000;
    left: 0;
    align-items: center;
}

.bo-logo { 
    padding: 0 0 2rem; 
    text-align: center; 
}
.bo-logo img { 
    height: 28px; 
    width: auto;
    filter: brightness(0) invert(1); 
}

.bo-nav { 
    flex-grow: 1; 
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.bo-nav-item {
    display: flex;
    flex-direction: column; /* VERTICAL STACK MANDATE */
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 1.25rem 0;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    text-align: center;
}

.bo-nav-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.bo-nav-label {
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bo-nav-item:hover { 
    background: rgba(255,255,255,0.05); 
    color: white; 
}

.bo-nav-item.active { 
    background: rgba(255,255,255,0.1); 
    color: var(--bo-accent); 
    border-left-color: var(--bo-accent); 
}

.bo-footer { 
    padding: 1.5rem 0; 
    border-top: 1px solid rgba(255,255,255,0.1); 
    width: 100%;
    text-align: center;
}

/* Control Rack (Sub-Navigation) */
.bo-control-rack {
    width: var(--control-rack-width);
    background: white;
    border-right: 1px solid var(--bo-border);
    position: fixed;
    left: var(--sidebar-width);
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 2.5rem 1.5rem;
    z-index: 900;
}

.rack-title {
    font-size: 0.75rem;
    font-weight: 900;
    color: var(--bo-sidebar);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 2.5rem;
}

.rack-btn {
    display: block;
    width: 100%;
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    background: #f8fafc;
    border: 1px solid var(--bo-border);
    border-radius: 8px;
    color: var(--bo-text);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.85rem;
    text-align: left;
    transition: all 0.2s;
    cursor: pointer;
}

.rack-btn:hover {
    border-color: var(--bo-accent);
    background: #f0f9ff;
}

.rack-btn.active {
    background: var(--bo-accent);
    color: white;
    border-color: var(--bo-accent);
}

/* Main Content Area */
.bo-main {
    margin-left: calc(var(--sidebar-width) + var(--control-rack-width));
    flex-grow: 1;
    padding: 4rem 5rem;
}

.bo-header { margin-bottom: 4rem; }
.bo-title h1 { font-size: 2.5rem; font-weight: 900; letter-spacing: -0.04em; color: var(--bo-sidebar); }

.bo-card {
    background: white;
    border-radius: 16px;
    border: 1px solid var(--bo-border);
    padding: 3rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    margin-bottom: 2.5rem;
}

.bo-stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; margin-bottom: 4rem; }

.badge { padding: 0.4rem 1rem; border-radius: 999px; font-size: 0.7rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; }
.badge-active { background: #dcfce7; color: #166534; }
.badge-pending { background: #fee2e2; color: #991b1b; }

/* --- Button Hardening (Fix White-on-White) --- */
.isc-btn-outline {
    background: white !important;
    border: 1px solid var(--slate-200) !important;
    color: var(--slate-600) !important;
}

.isc-btn-outline:hover {
    background: var(--slate-50) !important;
    border-color: var(--slate-300) !important;
    color: var(--slate-900) !important;
}

.isc-btn-primary {
    background: var(--brand) !important;
    color: white !important;
}

.isc-btn-primary:hover {
    background: #1d4ed8 !important;
    transform: translateY(-1px);
}

/* Dropdown text standard */
.isc-dropdown-btn {
    color: var(--slate-700) !important;
    text-align: left;
    padding: 0.75rem 1rem;
    width: 100%;
    border: none;
    background: transparent;
    font-weight: 600;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    font-size: 0.85rem;
}

.isc-dropdown-btn:hover {
    background: var(--slate-50);
    color: var(--brand) !important;
}