body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: #111;
}

/* Layout */
.container {
    display: flex;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(12px);
    color: white;
    min-height: 100vh;
    padding: 20px;
}

.sidebar h2 {
    margin-bottom: 30px;
}

.sidebar a {
    display: block;
    color: #cbd5f5;
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 10px;
    text-decoration: none;
    transition: 0.3s;
}

.sidebar a:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

/* Main */
.main {
    flex: 1;
    padding: 30px;
}

/* Cards */
.card {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 16px;
    color: white;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    margin-bottom: 20px;
}

/* Stats */
.stats {
    display: flex;
    gap: 20px;
}

.stat-box {
    flex: 1;
    padding: 20px;
    border-radius: 16px;
    color: white;
    font-weight: bold;
}

.stat1 { background: linear-gradient(45deg, #3b82f6, #6366f1); }
.stat2 { background: linear-gradient(45deg, #10b981, #059669); }
.stat3 { background: linear-gradient(45deg, #f59e0b, #d97706); }

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

table th {
    text-align: left;
    padding: 12px;
    background: rgba(255,255,255,0.1);
    color: white;
}

table td {
    padding: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    color: #e5e7eb;
}

/* Buttons */
button {
    background: #3b82f6;
    border: none;
    padding: 10px 16px;
    border-radius: 10px;
    color: white;
    cursor: pointer;
}

button:hover {
    background: #2563eb;
}

/* Badge */
.badge {
    padding: 5px 10px;
    border-radius: 8px;
    font-size: 12px;
}

.paid { background: #10b981; }
.pending { background: #f59e0b; }