:root {
    --p-bg-body: #f3f4f6;
    --p-bg-side: #ffffff;
    --p-bg-top: #ffffff;
    --p-text-main: #1f2937;
    --p-text-muted: #6b7280;
    --p-accent: #3b82f6;
    --p-border: #e5e7eb;
    --p-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.panel-shell {
    display: flex;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    font-family: 'YekanBakh', sans-serif !important;
    direction: rtl;
}

/* Sidebar */
.panel-sidebar {
    width: 280px;
    background: var(--p-bg-side);
    border-left: 1px solid var(--p-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: 0.3s;
}

    .panel-sidebar .sidebar-header {
        padding: 24px;
        border-bottom: 1px solid var(--p-border);
    }

    .panel-sidebar .brand {
        display: flex;
        align-items: center;
        gap: 12px;
        font-weight: 800;
        color: var(--p-accent);
        font-size: 1.1rem;
    }

    .panel-sidebar .panel-nav {
        flex: 1;
        padding: 15px 0;
    }

/* Navigation Links */
.panel-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    color: #4b5563;
    text-decoration: none;
    transition: 0.2s;
    font-size: 0.95rem;
}

    .panel-nav .nav-link:hover, .panel-nav .nav-link.active {
        background: #eff6ff;
        color: var(--p-accent);
        border-right: 4px solid var(--p-accent);
        font-weight: 600;
    }

    .panel-nav .nav-link i {
        font-size: 1.25rem;
    }

/* Divider */
.panel-menu-divider {
    height: 1px;
    background: var(--p-border);
    margin: 10px 24px;
}

/* Main Area */
.panel-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--p-bg-body);
    overflow: hidden;
}

.panel-topbar {
    height: 70px;
    background: var(--p-bg-top);
    border-bottom: 1px solid var(--p-border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    justify-content: space-between;
}

.panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.panel-wrapper {
    background: white;
    border-radius: 16px;
    padding: 24px;
    min-height: 100%;
    border: 1px solid var(--p-border);
    box-shadow: var(--p-shadow);
}

/* Buttons */
.panel-btn-logout {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: rgba(239, 68, 68, 0.05);
    color: #ef4444;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: 0.3s;
}

    .panel-btn-logout:hover {
        background: #ef4444;
        color: white;
    }

/* Responsive */
@media (max-width: 768px) {
    .panel-sidebar {
        position: fixed;
        right: -280px;
        top: 0;
        bottom: 0;
        width: 280px;
        height: 100vh;
        z-index: 2000;
        box-shadow: -5px 0 15px rgba(0,0,0,0.15);
    }

        .panel-sidebar.open {
            right: 0;
        }

    .panel-menu-toggle {
        display: block !important;
    }
}