:root {
    --primary: #00d2ff;
    --primary-dark: #00a8cc;
    --secondary: #3a7bd5;
    --dark-bg: #0f172a;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background: radial-gradient(circle at top left, #1e293b, #0f172a);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    overflow-y: auto;
    overflow-x: hidden;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar::-webkit-scrollbar {
    width: 5px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

.sidebar h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    background: linear-gradient(to right, var(--primary), #fff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    transition: 0.3s;
}

.nav-link:hover,
.nav-link.active {
    background: var(--glass);
    color: var(--primary);
    transform: translateX(5px);
}

.nav-link i {
    margin-right: 10px;
}

/* Main Content */
.main-content {
    margin-left: 260px;
    flex: 1;
    padding: 2rem;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 20px;
    flex-wrap: wrap;
}

/* Glass Cards */
.glass-card {
    background: var(--glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

/* Tables */
.premium-table {
    width: 100%;
    border-collapse: collapse;
}

.premium-table th {
    text-align: left;
    padding: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    border-bottom: 1px solid var(--glass-border);
}

.premium-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

input,
select,
textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 0.75rem;
    color: #fff;
    outline: none;
    transition: 0.3s;
}

select option {
    background: #1e293b;
    /* Fallback or specific dark color */
    color: #fff;
}

input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(0, 210, 255, 0.2);
}

.btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #b91c1c);
}

/* Badges */
.badge {
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
        width: 260px;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 1rem;
    }

    .mobile-toggle {
        display: flex !important;
    }

    /* Small screen adjustments */
    @media (max-width: 768px) {
        .top-bar {
            flex-direction: column;
            align-items: flex-start;
            gap: 1rem;
        }

        .user-info {
            width: 100%;
            justify-content: flex-start;
        }

        .glass-card {
            padding: 1rem;
            margin-bottom: 1rem;
        }
    }

    @media (max-width: 480px) {
        .main-content {
            padding: 0.75rem;
        }

        .card-title {
            font-size: 1rem;
            margin-bottom: 1rem;
        }
    }
}

/* Responsive Grid Utilities */
.responsive-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

@media (max-width: 640px) {
    .responsive-grid {
        grid-template-columns: 1fr;
    }
}

/* Responsive Flex Utilities */
.responsive-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.responsive-flex>* {
    flex: 1;
    min-width: 300px;
}

@media (max-width: 768px) {
    .responsive-flex>* {
        min-width: 100%;
    }
}

.mobile-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: #fff;
    cursor: pointer;
    margin-right: 1rem;
}

@keyframes pulse {
    0% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.7;
        transform: scale(0.95);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.stagnant-card {
    position: relative;
    overflow: hidden;
}

.stagnant-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 40%, rgba(245, 158, 11, 0.05) 50%, transparent 60%);
    background-size: 200% 200%;
    animation: sweep 3s infinite linear;
    pointer-events: none;
}

@keyframes sweep {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}