/* Admin Layout & Sidebar Styling */
:root {
    --sidebar-width: 260px;
    --sidebar-bg: #0f172a;
    --sidebar-hover: #1e293b;
    --sidebar-active: #3b82f6;
    --sidebar-text: #94a3b8;
    --sidebar-text-active: #ffffff;
    --content-bg: #f8fafc;
}

body {
    background-color: var(--content-bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #1e293b;
    overflow-x: hidden;
}

/* Sidebar Wrapper */
#wrapper {
    display: flex;
    width: 100%;
    align-items: stretch;
    min-height: 100vh;
}

#sidebar {
    min-width: var(--sidebar-width);
    max-width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

#sidebar .sidebar-brand {
    padding: 1.25rem 1.5rem;
    font-size: 1.15rem;
    font-weight: 700;
    color: #ffffff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

#sidebar .nav-category {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #64748b;
    font-weight: 700;
    padding: 1.25rem 1.5rem 0.5rem;
}

#sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.75rem 1.5rem;
    color: var(--sidebar-text);
    font-size: 0.925rem;
    font-weight: 500;
    border-radius: 0;
    transition: all 0.2s ease;
    text-decoration: none;
}

#sidebar .nav-link:hover {
    color: #ffffff;
    background: var(--sidebar-hover);
}

#sidebar .nav-link.active {
    color: var(--sidebar-text-active);
    background: rgba(59, 130, 246, 0.15);
    border-left: 4px solid var(--sidebar-active);
    font-weight: 600;
}

#sidebar .nav-link i {
    font-size: 1.15rem;
    width: 24px;
    text-align: center;
}

#sidebar-footer {
    margin-top: auto;
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* Main Content Area */
#content-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--content-bg);
}

/* Top Navbar */
.top-navbar {
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    padding: 0.85rem 1.75rem;
}

/* Cards & Widgets */
.card {
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.04);
}

.stat-card {
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.07);
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Responsive Sidebar Toggle */
@media (max-width: 991.98px) {
    #sidebar {
        margin-left: calc(-1 * var(--sidebar-width));
        position: fixed;
        height: 100vh;
    }
    #sidebar.toggled {
        margin-left: 0;
    }
}