:root {
    --bg-main: #0a0e14;
    --bg-card: rgba(22, 28, 36, 0.8);
    --bg-nav: rgba(13, 17, 23, 0.95);
    --accent: #3d8aff;
    --accent-glow: rgba(61, 138, 255, 0.3);
    --text-main: #e1e7ef;
    --text-dim: #8899a6;
    --border: rgba(255, 255, 255, 0.08);
    --success: #00f2fe;
    --danger: #ff4d4d;
    --glass: blur(12px) saturate(180%);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, sans-serif;
    line-height: 1.6;
    background-image:
        radial-gradient(circle at 20% 20%, rgba(61, 138, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(0, 242, 254, 0.05) 0%, transparent 40%);
    min-height: 100vh;
}

/* Sidebar Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: var(--bg-nav);
    border-right: 1px solid var(--border);
    padding: 1.5rem 1rem;
    z-index: 2000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(0);
}

.navbar.collapsed {
    transform: translateX(-100%);
}

.nav-brand {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 2.5rem;
    text-decoration: none;
    background: linear-gradient(45deg, var(--accent), var(--success));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 10px;
    color: var(--text-dim);
    text-decoration: none;
    transition: all 0.2s;
    font-weight: 500;
    cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.nav-item.active {
    color: var(--accent);
    background: var(--accent-glow);
    border: 1px solid rgba(61, 138, 255, 0.2);
}

/* Menu Toggle Button */
.menu-toggle {
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 2100;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-main);
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: var(--glass);
    transition: all 0.2s;
}

/* On Desktop, position it slightly differently if sidebar is closed */
@media (min-width: 1024px) {
    .menu-toggle {
        left: 1.5rem;
    }
}

.menu-toggle:hover {
    background: var(--accent-glow);
    border-color: var(--accent);
}

/* Nav Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1900;
    display: none;
}

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

/* Main Content Area */
.main-layout {
    margin-left: 0;
    padding: 1.5rem;
    padding-top: 5rem;
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

@media (min-width: 1024px) {
    .navbar.collapsed {
        transform: translateX(-100%);
    }

    .main-layout {
        margin-left: 260px;
        padding-top: 1.5rem;
        transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .main-layout.full-width {
        margin-left: 0;
        padding-top: 5rem;
        /* Make room for toggle button when sidebar is hidden */
    }
}

/* Select/Dropdown Styling Fix */
select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='white' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: calc(100% - 12px) center;
}

select option {
    background-color: #1a1f26;
    color: white;
    padding: 10px;
}

/* Glass Cards */
.card {
    background: var(--bg_card);
    backdrop-filter: var(--glass);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    padding: 1.5rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.stat-label {
    color: var(--text-dim);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 5px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
    background: var(--accent);
    color: white;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: scale(1.02);
}

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

.data-table th {
    text-align: left;
    padding: 1rem;
    color: var(--text-dim);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.data-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.animate-fade {
    animation: fadeIn 0.5s ease forwards;
}