:root {
    --bg-dark: #0a0c10;
    --bg-card: rgba(22, 27, 34, 0.45);
    --bg-sidebar: rgba(13, 17, 23, 0.85);
    --primary: #00d4ff;
    --primary-rgb: 0, 212, 255;
    --primary-glow: rgba(0, 212, 255, 0.4);
    --secondary: #7c3aed;
    --text-main: #e6edf3;
    --text-muted: #8b949e;
    --border: rgba(48, 54, 61, 0.6);
    --border-light: rgba(255, 255, 255, 0.08);
    --success: #238636;
    --danger: #da3633;
    --danger-rgb: 218, 54, 51;
    --warning: #d29922;
    --sidebar-width: 260px;
    --transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Animations */
@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeSlideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Layout Shell */
.app-shell {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* Hamburger Menu (Mobile) */
.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-main);
    font-size: 24px;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    z-index: 1001;
    position: fixed;
    top: 16px;
    right: 16px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.mobile-nav-toggle:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 1000;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo {
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-main), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 10px;
    margin-bottom: 4px;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s;
}

.nav-item:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.03);
}

.nav-item:hover::before {
    transform: translateX(100%);
}

.nav-item.active {
    background: rgba(0, 212, 255, 0.08);
    color: var(--primary);
    border: 1px solid rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.05);
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-light);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 40px;
    transition: var(--transition);
    width: calc(100% - var(--sidebar-width));
}

/* Header/Toolbar */
.top-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.page-title h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.page-title p {
    color: var(--text-muted);
    font-size: 15px;
}

/* Cards (Glassmorphism) */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.stat-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 212, 255, 0.05);
}

.stat-label {
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    margin-bottom: 12px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -1px;
}

/* Tables */
.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    overflow-x: auto;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

table {
    width: 100%;
    border-collapse: collapse;
    white-space: nowrap;
}

th {
    background: rgba(0, 0, 0, 0.2);
    padding: 16px 24px;
    text-align: left;
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-light);
}

td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    color: #c9d1d9;
}

tr:last-child td {
    border-bottom: none;
}

tr {
    transition: var(--transition);
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-main);
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.02em;
}

.badge-success {
    background: rgba(63, 185, 80, 0.1);
    color: #3fb950;
    border: 1px solid rgba(63, 185, 80, 0.2);
    box-shadow: inset 0 0 10px rgba(63, 185, 80, 0.05);
}

.badge-danger {
    background: rgba(248, 81, 73, 0.1);
    color: #f85149;
    border: 1px solid rgba(248, 81, 73, 0.2);
    box-shadow: inset 0 0 10px rgba(248, 81, 73, 0.05);
}

.badge-warning {
    background: rgba(210, 153, 34, 0.1);
    color: #d29922;
    border: 1px solid rgba(210, 153, 34, 0.2);
    box-shadow: inset 0 0 10px rgba(210, 153, 34, 0.05);
}

/* Forms */
input,
select,
textarea {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    color: var(--text-main);
    padding: 12px 16px;
    font-size: 14px;
    width: 100%;
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
}

input:hover,
select:hover,
textarea:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(0, 212, 255, 0.02);
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1);
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: #000;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.5);
    background: #33ddff;
}

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-light);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Overlay for mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 999;
}

/* Responsive Media Queries (Mobile First approach applied downwards) */
@media (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .mobile-nav-toggle {
        display: block;
    }

    .sidebar {
        transform: translateX(-100%);
        box-shadow: 20px 0 50px rgba(0, 0, 0, 0.5);
    }

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

    .sidebar-overlay.active {
        display: block;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 80px 20px 20px 20px;
    }

    .top-toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 20px;
    }

    td,
    th {
        padding: 12px 16px;
    }
}