/* GLOBAL STYLES */
body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    overflow-x: hidden;
}

/* SIDEBAR NAVIGATION */
.sidebar {
    width: 260px;
    background: #002244; /* Deep Banking Navy */
    color: white;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    padding: 20px 0;
    box-shadow: 4px 0 15px rgba(0,0,0,0.2);
    z-index: 1000;
}

.logo {
    font-size: 20px;
    font-weight: 800;
    text-align: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 30px;
    letter-spacing: 2px;
    color: #ffffff;
}

.nav-link {
    display: flex;
    align-items: center;
    color: #b0c4de;
    padding: 16px 25px;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 14px;
    border-left: 5px solid transparent;
}

.nav-link:hover {
    background: rgba(255,255,255,0.05);
    color: #ffffff;
    border-left: 5px solid #3498db;
}

.nav-link.active {
    background: #003366;
    color: #ffffff;
    border-left: 5px solid #2ecc71; /* Green success indicator */
    font-weight: 600;
}

/* MAIN CONTENT AREA */
.main-content {
    margin-left: 260px; /* Matches Sidebar Width */
    padding: 40px;
    min-height: 100vh;
}

h1 {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 25px;
}

/* DASHBOARD CARDS */
.balance-card {
    background: #ffffff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
    max-width: 700px;
    margin-bottom: 25px;
    border: 1px solid #eaeaea;
}

.balance-amount {
    font-size: 42px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 15px 0;
}

.status-badge {
    background: #d4edda;
    color: #155724;
    padding: 6px 15px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
}

/* TRANSACTION LIST */
.transaction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid #f1f1f1;
}

.transaction-item:last-child {
    border-bottom: none;
}

.text-red { color: #e74c3c; font-weight: bold; }
.text-green { color: #2ecc71; font-weight: bold; }

/* BUTTONS */
.btn-primary {
    background: #2ecc71;
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    width: 100%;
    transition: 0.2s;
}

.btn-primary:hover {
    background: #27ae60;
}

/* MOBILE RESPONSIVENESS (Optional but good) */
@media (max-width: 768px) {
    .sidebar { width: 70px; }
    .logo, .nav-link span { display: none; }
    .main-content { margin-left: 70px; }
}