:root {
    /* Billionaire Dark Palette - Balanced HSL */
    --bg-main: #050505;
    --bg-card: #0c0c0c;
    --bg-muted: #151515;

    --accent: #ffffff;
    --accent-muted: #a0a0a0;
    --primary: #ffffff;
    --primary-glow: rgba(255, 255, 255, 0.1);

    --border: rgba(255, 255, 255, 0.04);
    --border-hover: rgba(255, 255, 255, 0.1);

    --text-main: #ffffff;
    --text-muted: #71717a;
    --text-dim: #3f3f46;

    --success: #10b981;
    --error: #ef4444;

    --sidebar-width: 280px;
    --glass: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.05);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow-x: hidden;
}

/* Layout */
.dashboard-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar - Premium Minimalist */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #080808 0%, #050505 100%);
    border-right: 1px solid var(--border);
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 3.5rem;
    color: var(--primary);
}

.logo svg {
    width: 28px;
    height: 28px;
    stroke-width: 2.5px;
}

.nav-links {
    list-style: none;
    flex: 1;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1.25rem;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link i,
.nav-link svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.nav-link:hover {
    color: var(--text-main);
    background: var(--glass);
}

.nav-link:hover i {
    transform: translateX(3px);
}

.nav-link.active {
    background: var(--glass);
    color: var(--text-main);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), inset 0 0 0 1px var(--glass-border);
}

.nav-link.active i {
    color: var(--primary);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 3rem 4rem;
    max-width: 1600px;
}

/* Headers */
.dash-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.dash-title h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 0.5rem;
}

.dash-title p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.text-primary {
    color: var(--primary);
}

/* Premium Card */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.card.border-primary {
    border-left: 4px solid var(--primary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.stat-change {
    font-size: 0.8125rem;
    margin-top: 0.5rem;
    font-weight: 600;
}

.positive {
    color: var(--success);
}

.negative {
    color: var(--error);
}

/* Form Elements - Professional */
.select-premium {
    background-color: var(--bg-muted);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
    outline: none;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 180px;
}

.select-premium:hover,
.select-premium:focus {
    border-color: var(--border-hover);
    background-color: #1a1a1a;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.form-group input {
    width: 100%;
    background-color: var(--bg-muted);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.875rem 1.25rem;
    border-radius: 12px;
    font-size: 0.9375rem;
    outline: none;
    transition: all 0.2s;
}

.form-group input:focus {
    border-color: var(--accent-muted);
    background-color: #1a1a1a;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.02);
}

/* Button - Elite */
.btn-login {
    background-color: var(--accent);
    color: #000;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    background-color: #f0f0f0;
}

/* Table - Clean & Professional */
table {
    width: 100%;
    border-spacing: 0;
}

th {
    padding: 1.25rem 1rem;
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--border);
}

td {
    padding: 1.5rem 1rem;
    font-size: 0.9375rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-main);
}

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

tr:hover td {
    background-color: rgba(255, 255, 255, 0.01);
}

/* Utility */
.badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
        padding: 2rem 1rem;
    }

    .nav-label,
    .logo span {
        display: none;
    }

    .main-content {
        margin-left: 80px;
        padding: 2rem;
    }

    .dash-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
}