.sa-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
    background: #0f0f1a;
}

.sa-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    background: linear-gradient(180deg, rgba(15, 15, 30, 0.98) 0%, rgba(10, 10, 25, 1) 100%);
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    z-index: 50;
}

.sa-sidebar-header {
    padding: 20px 20px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sa-sidebar-header h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.3px;
}

.sa-sidebar-header .sa-sidebar-subtitle {
    font-size: 11px;
    color: #64748b;
    margin-top: 4px;
}

.sa-sidebar-back {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 12px;
    margin-bottom: 12px;
    transition: color 0.15s;
    position: relative;
    z-index: 2;
    pointer-events: auto;
    cursor: pointer;
    padding: 4px 0;
}

.sa-sidebar-back:hover {
    color: #a78bfa;
}

.sa-sidebar-nav {
    flex: 1;
    padding: 12px 0;
    overflow-y: auto;
}

.sa-nav-group {
    margin-bottom: 8px;
}

.sa-nav-group-label {
    padding: 8px 20px 6px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #475569;
}

.sa-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
    border-left: 3px solid transparent;
    cursor: pointer;
}

.sa-nav-item:hover {
    background: rgba(255, 255, 255, 0.04);
    color: #e2e8f0;
}

.sa-nav-item.active {
    background: rgba(167, 139, 250, 0.08);
    color: #a78bfa;
    border-left-color: #a78bfa;
}

.sa-nav-item .sa-nav-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.sa-nav-item .sa-nav-label {
    flex: 1;
}

.sa-nav-sub-item {
    padding-left: 50px;
    font-size: 12px;
}

.sa-sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 11px;
    color: #475569;
}

.sa-main {
    padding: 0;
    overflow-y: auto;
    min-height: 100vh;
}

.sa-main-header {
    position: sticky;
    top: 0;
    z-index: 40;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    background: rgba(15, 15, 30, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sa-main-header h1 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.3px;
}

.sa-main-header .sa-breadcrumb {
    font-size: 12px;
    color: #64748b;
    margin-top: 2px;
}

.sa-main-header .sa-breadcrumb a {
    color: #94a3b8;
    text-decoration: none;
}

.sa-main-header .sa-breadcrumb a:hover {
    color: #a78bfa;
}

.sa-main-header .sa-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sa-main-content {
    padding: 24px 32px 48px;
}

.sa-sidebar-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 60;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: rgba(30, 30, 50, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.sa-sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 45;
}

@media (max-width: 900px) {
    .sa-shell {
        grid-template-columns: 1fr;
    }

    .sa-sidebar {
        position: fixed;
        top: 0;
        left: -280px;
        width: 280px;
        transition: left 0.25s ease;
        z-index: 55;
    }

    .sa-sidebar.open {
        left: 0;
    }

    .sa-sidebar-toggle {
        display: flex;
    }

    .sa-sidebar-overlay.open {
        display: block;
    }

    .sa-main-header {
        padding-left: 60px;
    }

    .sa-main-content {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .sa-main-header {
        padding: 12px 12px 12px 56px;
    }

    .sa-main-header h1 {
        font-size: 1.1rem;
    }

    .sa-main-content {
        padding: 12px;
    }

    .sa-summary-grid {
        grid-template-columns: 1fr;
    }

    .sa-summary-card {
        border-radius: 8px;
        padding: 16px;
    }
}

.sa-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.sa-summary-card {
    background: linear-gradient(135deg, rgba(30, 30, 45, 0.95) 0%, rgba(20, 20, 35, 0.98) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 20px;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    display: block;
}

.sa-summary-card:hover {
    border-color: rgba(167, 139, 250, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.sa-summary-card .sa-card-icon {
    font-size: 24px;
    margin-bottom: 12px;
}

.sa-summary-card .sa-card-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.sa-summary-card .sa-card-label {
    font-size: 12px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sa-summary-card .sa-card-detail {
    font-size: 12px;
    color: #64748b;
    margin-top: 8px;
}