* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: #f8f9fa;
}

.container {
    max-width: 450px;
    margin: 0 auto;
    background: white;
    min-height: 100vh;
    padding-bottom: 100px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: #005dbb;
    color: white;
    font-weight: bold;
}

.payment-summary {
    background: #eef6ff;
    padding: 20px;
    border-bottom: 1px solid #d0e4ff;
}

.info-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
    color: #555;
}

.amount {
    font-size: 18px;
    font-weight: bold;
    color: #005dbb;
}

.section-title {
    padding: 15px;
    font-size: 14px;
    font-weight: bold;
    color: #888;
    background: #f4f4f4;
}

.bank-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: #eee;
}

.bank-item {
    background: white;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: 0.2s;
    border: 2px solid transparent;
}

.bank-item:hover {
    background: #f0f7ff;
}

.bank-item.selected {
    border: 2px solid #005dbb;
    background: #f0f7ff;
}

.bank-item img {
    height: 30px;
    max-width: 100%;
    margin-bottom: 10px;
    object-fit: contain;
}

.bank-item span {
    font-size: 12px;
    color: #333;
    text-align: center;
}

.footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    max-width: 450px;
    padding: 15px;
    background: white;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.pay-btn {
    width: 100%;
    padding: 15px;
    border-radius: 8px;
    border: none;
    background: #ccc;
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: not-allowed;
}

.pay-btn.active {
    background: #005dbb;
    cursor: pointer;
}