:root {
    /* Sidebar Design System (Approved Red Futuristic) */
    --neon-red: #ff003c;
    --sidebar-bg: rgba(10, 10, 10, 1);
    --sidebar-width: 260px;
    --sidebar-width-collapsed: 80px;
    --topbar-height: 65px;

    /* Content Design System (Refined Grey/White Futuristic) */
    --body-bg: #f5f7f9;
    --content-card-bg: #ffffff;
    --content-border: rgba(0, 0, 0, 0.08);
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

body {
    min-height: 100vh;
    background-color: var(--body-bg);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    overflow-x: hidden;
}

/* Sidebar Styles (Retained Red Aesthetic) */
#sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background: var(--sidebar-bg);
    backdrop-filter: blur(20px);
    color: #fff;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    border-right: 1px solid rgba(255, 0, 60, 0.2);
}

#sidebar .sidebar-header {
    padding: 20px;
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 0, 60, 0.05);
    border-bottom: 1px solid rgba(255, 0, 60, 0.1);
}

#sidebar .sidebar-header h3 {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 2px;
    margin: 0;
    color: var(--neon-red);
    text-shadow: 0 0 10px rgba(255, 0, 60, 0.5);
}

#sidebar .sidebar-logo {
    height: 30px;
    margin-right: 12px;
    filter: drop-shadow(0 0 5px rgba(255, 0, 60, 0.3));
}

#sidebar ul.components {
    padding: 15px 0;
}

#sidebar .sidebar-section-label {
    padding: 15px 25px 5px 25px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.4);
}

#sidebar ul li {
    margin: 5px 15px;
    border-radius: 10px;
    overflow: hidden;
}

#sidebar ul li a {
    padding: 12px 15px;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: 0.3s;
}

#sidebar ul li a i {
    width: 25px;
    margin-right: 12px;
    font-size: 1.1rem;
    text-align: center;
}

#sidebar ul li a:hover,
#sidebar ul li a.active {
    color: #fff;
    background: rgba(255, 0, 60, 0.1);
    box-shadow: inset 3px 0 0 var(--neon-red);
}

#sidebar ul li a:hover i,
#sidebar ul li a.active i {
    color: var(--neon-red);
    filter: drop-shadow(0 0 5px var(--neon-red));
}

#sidebar ul li a.dropdown-toggle {
    position: relative;
}

#sidebar ul ul li a {
    padding-left: 45px !important;
    font-size: 0.85rem !important;
    background: rgba(255, 255, 255, 0.03);
}

#sidebar.collapsed ul li a.dropdown-toggle::after {
    display: none;
}

/* Collapsed Sidebar */
#sidebar.collapsed {
    width: var(--sidebar-width-collapsed);
}

#sidebar.collapsed .sidebar-header h3,
#sidebar.collapsed .sidebar-logo {
    display: none;
}

#sidebar.collapsed ul li {
    margin: 5px 10px;
}

#sidebar.collapsed ul li a {
    justify-content: center;
    padding: 15px 0;
}

#sidebar.collapsed ul li a span {
    display: none;
}

#sidebar.collapsed ul li a i {
    margin-right: 0;
}

/* Content Styles (New Grey/White Aesthetic) */
#content {
    width: calc(100% - var(--sidebar-width));
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--body-bg);
}

#content.collapsed {
    width: calc(100% - var(--sidebar-width-collapsed));
    margin-left: var(--sidebar-width-collapsed);
}

/* Navbar Styles */
.navbar {
    height: var(--topbar-height);
    background: rgba(255, 255, 255, 1);
    border-bottom: 1px solid var(--content-border);
    padding: 0 30px;
    z-index: 999;
}

.navbar .nav-link {
    color: var(--text-primary) !important;
    font-weight: 500;
}

.navbar .btn-outline-danger {
    border-color: rgba(255, 0, 60, 0.3);
    color: var(--neon-red);
}

.navbar .btn-outline-danger:hover {
    background: var(--neon-red);
    color: #fff;
}

/* Dashboard Component Styles */
.card {
    background: var(--content-card-bg);
    border: 1px solid var(--content-border);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    margin-bottom: 25px;
    transition: transform 0.2s, box-shadow 0.2s;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.card-header {
    background: #f8f9fa !important;
    border-bottom: 1px solid var(--content-border) !important;
    padding: 15px 25px !important;
    font-weight: 600 !important;
    color: var(--text-primary) !important;
}

.table {
    margin: 0;
}

.table thead th {
    background: #f8f9fa;
    border-bottom: 2px solid var(--content-border);
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 15px 20px;
}

.table tbody td {
    padding: 15px 20px;
    border-bottom: 1px solid var(--content-border);
    color: var(--text-primary);
    vertical-align: middle;
}

/* Helper Classes */
.badge.bg-danger {
    background-color: var(--neon-red) !important;
}

.btn-primary {
    background-color: var(--neon-red);
    border-color: var(--neon-red);
    font-weight: 600;
}

.btn-primary:hover {
    background-color: #e60036;
    border-color: #e60036;
}

/* Responsive Styles */
@media (max-width: 768px) {
    #sidebar {
        margin-left: calc(var(--sidebar-width) * -1);
    }

    #sidebar.active {
        margin-left: 0;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.2);
    }

    #content {
        width: 100%;
        margin-left: 0;
    }

    #sidebarCollapse span {
        display: none;
    }
}

/* Overlay for mobile */
.overlay {
    display: none;
    position: fixed;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: all 0.3s ease-in-out;
}

.overlay.active {
    display: block;
    opacity: 1;
}

.stat-card {
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    border: none;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.8;
}

/* Card Themes */
.card-review {
    background: linear-gradient(135deg, #fff1eb 0%, #ace0f9 100%);
    color: #2c3e50;
}

.card-forward {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    color: #1565c0;
}

.card-rejected {
    background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
    color: #c62828;
}

.card-accepted {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    color: #2e7d32;
}

.card-total {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.icon-review {
    background-color: rgba(172, 224, 249, 0.4);
    color: #2c3e50;
}

.icon-forward {
    background-color: rgba(187, 222, 251, 0.4);
    color: #1565c0;
}

.icon-rejected {
    background-color: rgba(255, 205, 210, 0.4);
    color: #c62828;
}

.icon-accepted {
    background-color: rgba(200, 230, 201, 0.4);
    color: #2e7d32;
}

.icon-total {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}