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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: #333;
    color: white;
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.balance-display {
    display: flex;
    gap: 2rem;
    margin-left: auto;
}

.balance-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.balance-item i {
    font-size: 1.2rem;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.action-tile {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    aspect-ratio: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.action-tile:hover {
    transform: translateY(-5px);
}

.action-tile h2 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.form-group label {
    font-weight: bold;
    color: #555;
}

.form-group input, .form-group select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.submit-btn {
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: auto;
}

.submit-btn:hover {
    background-color: #0056b3;
}

.history-section {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.history-list {
    list-style: none;
    margin-top: 1rem;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

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

.transaction-type {
    font-weight: bold;
}

.amount-positive {
    color: #28a745;
}

.amount-negative {
    color: #dc3545;
}

.error-message {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.success-message {
    color: #28a745;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}