* {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    margin: 0;
    padding: 0;
    color: #fff;
}

.container {
    max-width: 420px;
    margin: 40px auto;
    background: #ffffff;
    color: #333;
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.25);
}

header h1 {
    text-align: center;
    margin-bottom: 24px;
}

.flight-card {
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 24px;
}

.route {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    margin-bottom: 12px;
}

.arrow {
    font-size: 20px;
}

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

.price {
    font-size: 22px;
    font-weight: bold;
    color: #0a7cff;
}

.payment h2 {
    margin-bottom: 16px;
}

form input {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 14px;
}

.row {
    display: flex;
    gap: 10px;
}

button {
    width: 100%;
    padding: 14px;
    border-radius: 10px;
    border: none;
    background: #0a7cff;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

button:hover {
    background: #055fd1;
}